/* roulang page: index */
:root{
  --primary:#FF5A5F;
  --primary-dark:#E04E53;
  --primary-light:#FFE8E6;
  --accent:#FFD166;
  --accent-light:#FFF7E0;
  --dark:#1A1A2E;
  --text:#2D3436;
  --text-light:#6B7280;
  --bg:#FFF8F5;
  --card:#FFFFFF;
  --border:#F0E4DE;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:8px;
  --shadow-sm:0 2px 10px rgba(0,0,0,.04);
  --shadow:0 6px 24px rgba(0,0,0,.06);
  --shadow-lg:0 12px 40px rgba(255,90,95,.12);
  --transition:.3s ease;
  --container:1200px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input{font:inherit;border:none;outline:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}

/* ===== Header / Nav ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);
  background:rgba(255,255,255,.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(240,228,222,.7);transition:box-shadow var(--transition);
}
.site-header.scrolled{box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{
  font-size:22px;font-weight:800;color:var(--dark);letter-spacing:1px;white-space:nowrap;
  display:flex;align-items:center;gap:10px;
}
.logo-dot{width:10px;height:10px;border-radius:50%;background:var(--primary);display:inline-block;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.4);opacity:.5}}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  padding:8px 16px;border-radius:var(--radius-sm);font-size:15px;font-weight:500;color:var(--text);
  transition:all var(--transition);position:relative;
}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link.active{color:var(--primary);background:var(--primary-light);font-weight:600}
.nav-cta{
  margin-left:16px;padding:9px 22px;border-radius:50px;background:var(--primary);color:#fff;
  font-size:14px;font-weight:600;transition:all var(--transition);white-space:nowrap;
}
.nav-cta:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,90,95,.35)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:transparent;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--dark);border-radius:2px;transition:all var(--transition)}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
@media(max-width:992px){
  .main-nav{
    position:fixed;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;
    align-items:stretch;padding:16px 24px 24px;border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-lg);transform:translateY(-120%);opacity:0;visibility:hidden;transition:all .35s ease;gap:10px;
  }
  .main-nav.open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-link{font-size:16px;padding:14px 16px}
  .nav-cta{margin-left:0;text-align:center;margin-top:8px}
  .nav-toggle{display:flex}
}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:calc(100vh - var(--header-h));display:flex;align-items:center;justify-content:center;
  padding:120px 0 100px;margin-top:var(--header-h);overflow:hidden;
  background:url('/assets/images/backpic/back-1.webp') center center/cover no-repeat;
}
.hero::before{
  content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,26,46,.82) 0%,rgba(255,90,95,.55) 100%);
}
.hero::after{
  content:'';position:absolute;bottom:-2px;left:0;right:0;height:80px;
  background:linear-gradient(to top,var(--bg),transparent);
}
.hero-content{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto;padding:0 24px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 20px;border-radius:50px;
  background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.3);color:#fff;
  font-size:14px;font-weight:500;letter-spacing:1px;margin-bottom:28px;backdrop-filter:blur(8px);
}
.hero-badge .spark{color:var(--accent);font-size:16px}
.hero h1{
  font-size:clamp(34px,5vw,56px);font-weight:800;color:#fff;line-height:1.25;letter-spacing:-1px;
  margin-bottom:24px;text-shadow:0 4px 30px rgba(0,0,0,.3);
}
.hero h1 .highlight{
  background:linear-gradient(120deg,var(--accent),#FF8A5C);-webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;font-weight:800;
}
.hero p{
  font-size:clamp(16px,2vw,19px);color:rgba(255,255,255,.9);line-height:1.8;margin-bottom:40px;
  max-width:580px;margin-left:auto;margin-right:auto;text-shadow:0 2px 12px rgba(0,0,0,.2);
}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 36px;border-radius:50px;
  font-size:16px;font-weight:600;transition:all var(--transition);cursor:pointer;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 28px rgba(255,90,95,.4)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-3px);box-shadow:0 12px 36px rgba(255,90,95,.5)}
.btn-ghost{
  background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.5);
  backdrop-filter:blur(6px);
}
.btn-ghost:hover{background:rgba(255,255,255,.22);transform:translateY(-3px)}
.hero-stats{
  display:flex;gap:36px;justify-content:center;margin-top:56px;flex-wrap:wrap;
}
.hero-stat{text-align:center}
.hero-stat .num{
  font-size:32px;font-weight:800;color:#fff;line-height:1.2;
}
.hero-stat .label{
  font-size:13px;color:rgba(255,255,255,.75);letter-spacing:1px;
}
@media(max-width:768px){
  .hero{padding:80px 0 70px}
  .hero-stats{gap:24px}
}

/* ===== Section ===== */
.section{padding:96px 0}
.section--alt{background:var(--card)}
.section-header{text-align:center;max-width:720px;margin:0 auto 56px}
.section-tag{
  display:inline-block;padding:6px 18px;border-radius:50px;background:var(--primary-light);
  color:var(--primary);font-size:13px;font-weight:700;letter-spacing:2px;margin-bottom:16px;
}
.section-title{font-size:clamp(26px,3.4vw,40px);font-weight:800;color:var(--dark);line-height:1.3;margin-bottom:14px;letter-spacing:-.5px}
.section-desc{font-size:16px;color:var(--text-light);line-height:1.8}
@media(max-width:768px){.section{padding:64px 0}}

/* ===== Features ===== */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{
  background:var(--card);border-radius:var(--radius-lg);padding:40px 32px;border:1px solid var(--border);
  transition:all var(--transition);position:relative;overflow:hidden;
}
.feature-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:opacity var(--transition);
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:64px;height:64px;border-radius:18px;display:flex;align-items:center;justify-content:center;
  font-size:30px;margin-bottom:24px;
}
.feature-card:nth-child(1) .feature-icon{background:var(--primary-light)}
.feature-card:nth-child(2) .feature-icon{background:var(--accent-light)}
.feature-card:nth-child(3) .feature-icon{background:#E8F4FD}
.feature-card h3{font-size:22px;font-weight:700;color:var(--dark);margin-bottom:14px}
.feature-card p{font-size:15px;color:var(--text-light);line-height:1.8}
@media(max-width:992px){.features-grid{grid-template-columns:1fr;gap:20px}}

/* ===== Categories / Bento ===== */
.category-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
.category-card{
  grid-column:span 2;position:relative;border-radius:var(--radius-lg);overflow:hidden;
  min-height:260px;padding:32px;display:flex;flex-direction:column;justify-content:flex-end;
  background:var(--card);border:1px solid var(--border);transition:all var(--transition);
  cursor:pointer;
}
.category-card--featured{grid-column:span 2;grid-row:span 2;min-height:calc(260px*2 + 22px)}
.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.category-card .cat-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.category-card:hover .cat-img{transform:scale(1.06)}
.category-card .cat-overlay{
  position:absolute;inset:0;background:linear-gradient(to top,rgba(26,26,46,.85) 0%,rgba(26,26,46,.25) 50%,rgba(26,26,46,.1) 100%);
  transition:opacity var(--transition);
}
.category-card .cat-content{position:relative;z-index:2;color:#fff}
.category-card .cat-tag{
  display:inline-block;padding:4px 14px;border-radius:50px;background:rgba(255,255,255,.2);
  border:1px solid rgba(255,255,255,.3);font-size:12px;letter-spacing:1px;margin-bottom:14px;
  backdrop-filter:blur(6px);
}
.category-card h3{font-size:24px;font-weight:700;margin-bottom:8px;text-shadow:0 2px 10px rgba(0,0,0,.3)}
.category-card p{font-size:14px;color:rgba(255,255,255,.85);margin-bottom:16px;line-height:1.6;text-shadow:0 1px 6px rgba(0,0,0,.3)}
.category-card .cat-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);
}
.category-card .cat-link::after{content:'→';transition:transform var(--transition)}
.category-card:hover .cat-link::after{transform:translateX(4px)}
@media(max-width:992px){
  .category-grid{grid-template-columns:repeat(2,1fr)}
  .category-card,.category-card--featured{grid-column:span 1;grid-row:span 1;min-height:220px}
}
@media(max-width:520px){
  .category-grid{grid-template-columns:1fr}
  .category-card,.category-card--featured{min-height:200px}
}

/* ===== Latest Posts (CMS) ===== */
.posts-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.post-card{
  background:var(--card);border-radius:var(--radius-lg);padding:28px;border:1px solid var(--border);
  transition:all var(--transition);display:flex;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary-light)}
.post-link{display:flex;flex-direction:column;gap:12px;width:100%}
.post-card-top{display:flex;justify-content:space-between;align-items:center}
.post-category{
  padding:4px 14px;border-radius:50px;background:var(--primary-light);color:var(--primary);
  font-size:12px;font-weight:600;
}
.post-date{font-size:13px;color:var(--text-light)}
.post-title{
  font-size:18px;font-weight:700;color:var(--dark);line-height:1.5;
  transition:color var(--transition);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover .post-title{color:var(--primary)}
.post-excerpt{
  font-size:14px;color:var(--text-light);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-post{
  grid-column:1/-1;text-align:center;padding:48px;color:var(--text-light);
  background:var(--card);border-radius:var(--radius-lg);border:1px dashed var(--border);
}
@media(max-width:768px){.posts-grid{grid-template-columns:1fr}}

/* ===== Stats Band ===== */
.stats-band{
  background:linear-gradient(120deg,var(--dark) 0%,#2D2D44 100%);border-radius:var(--radius-lg);
  padding:64px 48px;text-align:center;position:relative;overflow:hidden;
}
.stats-band::before{
  content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;border-radius:50%;
  background:rgba(255,90,95,.2);filter:blur(40px);
}
.stats-band::after{
  content:'';position:absolute;bottom:-80px;left:-40px;width:180px;height:180px;border-radius:50%;
  background:rgba(255,209,102,.15);filter:blur(50px);
}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;position:relative;z-index:2}
.stat-item .stat-icon{font-size:32px;margin-bottom:12px}
.stat-item .stat-number{font-size:clamp(32px,4vw,48px);font-weight:800;color:#fff;line-height:1.2;margin-bottom:6px}
.stat-item .stat-label{font-size:15px;color:rgba(255,255,255,.7)}
.stat-divider{width:1px;height:60px;background:rgba(255,255,255,.15);align-self:center}
@media(max-width:768px){
  .stats-grid{grid-template-columns:1fr;gap:28px}
  .stat-divider{display:none}
}

/* ===== Testimonials ===== */
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testimonial-card{
  background:var(--card);border-radius:var(--radius-lg);padding:32px;border:1px solid var(--border);
  transition:all var(--transition);position:relative;
}
.testimonial-card::before{
  content:'“';font-size:80px;color:var(--primary);position:absolute;top:8px;right:24px;
  font-family:Georgia,serif;line-height:1;opacity:.15;
}
.testimonial-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.testimonial-stars{color:var(--accent);font-size:18px;letter-spacing:2px;margin-bottom:16px}
.testimonial-card blockquote{
  font-size:15px;color:var(--text);line-height:1.8;margin-bottom:20px;font-style:italic;
}
.testimonial-author{
  display:flex;align-items:center;gap:12px;border-top:1px solid var(--border);padding-top:16px;
}
.testimonial-avatar{
  width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:700;
}
.testimonial-author .name{font-size:14px;font-weight:600;color:var(--dark)}
.testimonial-author .role{font-size:12px;color:var(--text-light)}
@media(max-width:992px){.testimonials-grid{grid-template-columns:1fr;gap:20px}}

/* ===== FAQ ===== */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--card);border-radius:var(--radius-lg);border:1px solid var(--border);
  padding:28px 32px;margin-bottom:16px;transition:all var(--transition);cursor:pointer;
}
.faq-item:hover{border-color:var(--primary-light);box-shadow:var(--shadow-sm)}
.faq-question{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-size:18px;font-weight:600;color:var(--dark);
}
.faq-icon{
  width:28px;height:28px;border-radius:50%;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;
  transition:transform var(--transition);font-weight:700;
}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .4s ease;font-size:15px;color:var(--text-light);
  line-height:1.8;
}
.faq-item.active .faq-answer{max-height:500px;padding-top:16px}

/* ===== CTA ===== */
.cta-section{
  position:relative;padding:80px 0;text-align:center;
  background:url('/assets/images/backpic/back-2.webp') center center/cover no-repeat;
}
.cta-section::before{
  content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,90,95,.9),rgba(26,26,46,.85));
}
.cta-content{position:relative;z-index:2;max-width:680px;margin:0 auto;padding:0 24px}
.cta-section h2{
  font-size:clamp(26px,3.4vw,40px);font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:-.5px;
}
.cta-section p{font-size:17px;color:rgba(255,255,255,.9);margin-bottom:32px;line-height:1.8}
.btn-light{background:#fff;color:var(--primary);box-shadow:0 8px 30px rgba(0,0,0,.2)}
.btn-light:hover{background:var(--primary-light);transform:translateY(-3px);box-shadow:0 12px 36px rgba(0,0,0,.25)}

/* ===== Footer ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.8);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand .footer-logo{font-size:22px;font-weight:800;color:#fff;margin-bottom:16px;display:block}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px}
.footer-col h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.6);transition:all var(--transition)}
.footer-col a:hover{color:var(--accent);padding-left:6px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;
  font-size:13px;color:rgba(255,255,255,.4);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
@media(max-width:768px){
  .footer-grid{grid-template-columns:1fr;gap:32px}
}

/* ===== Utility ===== */
.text-center{text-align:center}
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}
:focus-visible{outline:3px solid rgba(255,90,95,.4);outline-offset:2px}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category1 */
:root {
  --primary: #6C5CE7;
  --primary-strong: #5A4BD1;
  --primary-soft: #EDE9FC;
  --accent: #FF7675;
  --accent-soft: #FFE8E8;
  --warm: #FFB347;
  --warm-soft: #FFF3E0;
  --bg: #FFFFFF;
  --bg-soft: #F8F7FE;
  --bg-warm: #FFF9F5;
  --text: #2D2A3A;
  --text-light: #6E6A7E;
  --text-lighter: #9C98AC;
  --border: #E8E6F2;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 8px rgba(45, 42, 58, 0.06);
  --shadow-md: 0 8px 30px rgba(45, 42, 58, 0.08);
  --shadow-lg: 0 20px 50px rgba(108, 92, 231, 0.12);
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 32px;
  --spacing-lg: 56px;
  --spacing-xl: 80px;
  --container-w: 1160px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}
*, *::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); font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary-strong); }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
.container { max-width: var(--container-w); margin: 0 auto; padding: 0 24px; }
/* 顶部导航 */
.site-header { background: rgba(255,255,255,0.92); backdrop-filter: blur(16px); position: sticky; top: 0; z-index: 100; border-bottom: 1px solid rgba(232,230,242,0.7); transition: box-shadow 0.3s ease; }
.site-header.scrolled { box-shadow: 0 4px 20px rgba(45,42,58,0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; font-size: 20px; font-weight: 800; letter-spacing: 1px; color: var(--text); gap: 10px; }
.logo-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--gradient, linear-gradient(135deg, var(--primary), var(--accent))); box-shadow: 0 0 12px rgba(108,92,231,0.5); }
.logo:hover { color: var(--text); }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav .nav-link { padding: 8px 16px; border-radius: 100px; font-size: 15px; font-weight: 500; color: var(--text-light); transition: all 0.25s ease; }
.main-nav .nav-link:hover { color: var(--primary); background: var(--primary-soft); }
.main-nav .nav-link.active { color: var(--primary); background: var(--primary-soft); font-weight: 700; }
.nav-cta { padding: 10px 24px; border-radius: 100px; background: linear-gradient(135deg, var(--primary), #8B7BEE); color: #fff !important; font-weight: 600; border: none; box-shadow: 0 4px 16px rgba(108,92,231,0.3); transition: all 0.3s ease; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(108,92,231,0.4); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: transparent; border: none; padding: 8px; border-radius: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s ease; }
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav { position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px 24px; gap: 4px; border-bottom: 1px solid var(--border); box-shadow: 0 20px 30px rgba(45,42,58,0.08); display: none; }
  .main-nav.open { display: flex; }
  .main-nav .nav-link { padding: 12px 20px; width: 100%; text-align: center; }
  .nav-cta { margin-top: 8px; width: 100%; text-align: center; }
}
/* Hero */
.category-hero { position: relative; padding: 80px 0 72px; background: linear-gradient(135deg, var(--bg-soft) 0%, #F0EDFF 60%, var(--warm-soft) 100%); overflow: hidden; }
.hero-decor { position: absolute; inset: 0; pointer-events: none; background-image: url('/assets/images/backpic/back-2.webp'); background-size: cover; background-position: center; opacity: 0.12; mix-blend-mode: multiply; }
.hero-inner { position: relative; z-index: 1; max-width: 820px; margin: 0 auto; text-align: center; }
.hero-tag { display: inline-block; padding: 6px 18px; background: rgba(255,255,255,0.8); border: 1px solid rgba(108,92,231,0.2); border-radius: 100px; font-size: 14px; color: var(--primary); font-weight: 600; margin-bottom: 20px; box-shadow: var(--shadow-sm); }
.category-hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; line-height: 1.3; margin-bottom: 20px; letter-spacing: -0.5px; }
.category-hero .hero-lead { font-size: clamp(1rem, 2vw, 1.15rem); color: var(--text-light); max-width: 640px; margin: 0 auto 32px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: 100px; font-size: 15px; font-weight: 700; border: none; transition: all 0.3s ease; }
.btn-primary { background: linear-gradient(135deg, var(--primary), #8B7BEE); color: #fff; box-shadow: 0 8px 24px rgba(108,92,231,0.35); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(108,92,231,0.45); color: #fff; }
.btn-ghost { background: rgba(255,255,255,0.8); color: var(--primary); border: 2px solid rgba(108,92,231,0.2); backdrop-filter: blur(4px); }
.btn-ghost:hover { background: var(--primary-soft); border-color: var(--primary); color: var(--primary-strong); transform: translateY(-3px); }
.hero-notes { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.hero-notes span { font-size: 13px; color: var(--text-lighter); display: flex; align-items: center; gap: 6px; }
/* 板块通用 */
.section { padding: var(--spacing-lg) 0; }
.section-soft { background: var(--bg-soft); }
.section-warm { background: var(--bg-warm); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-tag { display: inline-block; padding: 6px 16px; background: var(--primary-soft); color: var(--primary); border-radius: 100px; font-size: 13px; font-weight: 600; margin-bottom: 14px; }
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; line-height: 1.35; margin-bottom: 12px; }
.section-head p { color: var(--text-light); font-size: 15px; }
/* 卖点卡 */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 32px 28px; transition: all 0.3s ease; position: relative; overflow: hidden; }
.feature-card::before { content: ''; position: absolute; inset: 0 0 auto 0; height: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: opacity 0.3s ease; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 56px; height: 56px; border-radius: 16px; background: var(--primary-soft); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; font-size: 26px; }
.feature-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
/* 场景 */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scene-card { background: #fff; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border); transition: all 0.3s ease; }
.scene-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.scene-img { width: 100%; height: 180px; object-fit: cover; }
.scene-body { padding: 24px; }
.scene-label { display: inline-block; font-size: 12px; font-weight: 600; color: var(--accent); background: var(--accent-soft); padding: 4px 12px; border-radius: 100px; margin-bottom: 12px; }
.scene-card:nth-child(2) .scene-label { color: #D9822B; background: var(--warm-soft); }
.scene-card:nth-child(3) .scene-label { color: var(--primary); background: var(--primary-soft); }
.scene-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.scene-body p { font-size: 14px; color: var(--text-light); }
/* 内容板块（模拟树洞留言） */
.content-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.content-card { display: flex; gap: 20px; background: #fff; border-radius: var(--radius-md); padding: 24px; border: 1px solid var(--border); transition: all 0.3s ease; }
.content-card:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
.content-card img { width: 96px; height: 96px; object-fit: cover; border-radius: var(--radius-sm); flex-shrink: 0; }
.content-body h3 { font-size: 15px; font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
.content-body p { font-size: 13px; color: var(--text-light); line-height: 1.6; margin-bottom: 10px; }
.content-meta { font-size: 12px; color: var(--text-lighter); display: flex; gap: 14px; flex-wrap: wrap; }
.content-meta span { display: inline-flex; align-items: center; gap: 4px; }
/* 流程 */
.process-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 0; margin-top: 8px; }
.process-step { flex: 1; min-width: 200px; max-width: 240px; text-align: center; padding: 32px 20px; position: relative; }
.process-num { width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), #8B7BEE); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 800; margin-bottom: 16px; box-shadow: 0 6px 16px rgba(108,92,231,0.3); }
.process-step h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 13px; color: var(--text-light); padding: 0 8px; }
.process-step:not(:last-child)::after { content: '→'; position: absolute; right: -16px; top: 44px; font-size: 20px; color: var(--border); }
/* 统计数字 */
.stats-band { background: linear-gradient(135deg, var(--primary), #8B7BEE); padding: 64px 0; border-radius: var(--radius-lg); margin-top: 24px; position: relative; overflow: hidden; }
.stats-band::before { content: ''; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-3.webp'); background-size: cover; background-position: center; opacity: 0.08; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 1; }
.stat-item { text-align: center; color: #fff; }
.stat-item .stat-num { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; line-height: 1.2; }
.stat-item .stat-label { font-size: 14px; opacity: 0.85; margin-top: 6px; }
/* 测试模块（简版倾诉自测） */
.test-card { background: #fff; border-radius: var(--radius-lg); padding: 48px; border: 1px solid var(--border); box-shadow: var(--shadow-sm); max-width: 720px; margin: 0 auto; }
.test-question { font-size: 18px; font-weight: 700; margin-bottom: 20px; }
.test-options { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.test-option { padding: 10px 20px; border-radius: 100px; border: 2px solid var(--border); background: #fff; font-size: 14px; font-weight: 500; transition: all 0.2s ease; }
.test-option:hover { border-color: var(--primary); background: var(--primary-soft); }
.test-option.selected { border-color: var(--primary); background: var(--primary); color: #fff; }
/* 社区 - 引用 */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.quote-card { background: #fff; border-radius: var(--radius-md); padding: 28px; border: 1px solid var(--border); transition: all 0.3s ease; display: flex; flex-direction: column; }
.quote-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.quote-text { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 20px; flex-grow: 1; }
.quote-author { display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--border); padding-top: 16px; }
.quote-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--primary-soft); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--primary); font-size: 14px; }
.quote-author b { font-size: 14px; font-weight: 600; }
.quote-author span { font-size: 12px; color: var(--text-lighter); }
/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 16px; overflow: hidden; transition: border-color 0.3s ease; }
.faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-q { width: 100%; padding: 22px 28px; background: #fff; border: none; text-align: left; font-size: 16px; font-weight: 600; color: var(--text); display: flex; justify-content: space-between; align-items: center; gap: 16px; transition: all 0.3s ease; }
.faq-q:hover { color: var(--primary); }
.faq-q .icon { width: 14px; height: 14px; position: relative; flex-shrink: 0; transition: transform 0.3s ease; }
.faq-q .icon::before, .faq-q .icon::after { content: ''; position: absolute; background: var(--text-light); transition: background 0.3s ease; }
.faq-q .icon::before { width: 14px; height: 2px; top: 6px; left: 0; }
.faq-q .icon::after { width: 2px; height: 14px; top: 0; left: 6px; transition: all 0.3s ease; }
.faq-item.active .faq-q .icon::after { transform: rotate(90deg); opacity: 0; }
.faq-item.active .faq-q .icon { transform: rotate(45deg); }
.faq-item.active .faq-q { color: var(--primary); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-a-inner { padding: 0 28px 24px; font-size: 14px; color: var(--text-light); line-height: 1.8; }
/* CTA */
.cta-box { background: linear-gradient(135deg, var(--primary), #8B7BEE); border-radius: var(--radius-lg); padding: 72px 56px; text-align: center; color: #fff; position: relative; overflow: hidden; }
.cta-box::before { content: ''; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.webp'); background-size: cover; background-position: center; opacity: 0.08; }
.cta-box h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 16px; position: relative; }
.cta-box p { font-size: 16px; opacity: 0.9; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; position: relative; }
.cta-box .btn-white { background: #fff; color: var(--primary); padding: 16px 40px; border-radius: 100px; font-weight: 700; box-shadow: 0 8px 24px rgba(0,0,0,0.2); position: relative; transition: all 0.3s ease; }
.cta-box .btn-white:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(0,0,0,0.25); }
/* 页脚 */
.site-footer { background: #1D1A2A; color: #B8B4CD; padding: 64px 0 0; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-logo { font-size: 20px; font-weight: 800; color: #fff; letter-spacing: 1px; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px rgba(255,118,117,0.6); }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 20px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { color: #B8B4CD; font-size: 14px; transition: color 0.2s ease; }
.footer-col ul li a:hover { color: #fff; }
.footer-bottom { padding: 24px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 13px; }
.footer-bottom a { color: #7A76FF; }
.footer-bottom a:hover { color: #A5A2FF; }
/* 响应式 */
@media (max-width: 1024px) {
  .feature-grid, .scene-grid, .quote-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .process-step:not(:last-child)::after { display: none; }
}
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .feature-grid, .scene-grid, .quote-grid, .content-grid, .footer-grid { grid-template-columns: 1fr; }
  .content-card { flex-direction: column; }
  .content-card img { width: 100%; height: 180px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .cta-box { padding: 48px 24px; }
  .test-card { padding: 32px 24px; }
  .footer-grid { gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .process-step { max-width: 100%; }
  .site-footer { padding-top: 48px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .category-hero { padding: 56px 0 48px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .test-options { flex-direction: column; }
  .test-option { text-align: center; }
}
/* focus 对照度 */
a:focus-visible, button:focus-visible, .test-option:focus-visible { outline: 3px solid rgba(108,92,231,0.4); outline-offset: 2px; border-radius: 4px; }

/* roulang page: article */
:root {
  --color-primary: #ff5c38;
  --color-primary-dark: #e8441f;
  --color-secondary: #7c4dff;
  --color-dark: #1a1f36;
  --color-bg: #fff8f5;
  --color-surface: #ffffff;
  --color-text: #2d2a32;
  --color-text-light: #6b7280;
  --color-border: #f0e6e2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(26, 31, 54, 0.06);
  --shadow-md: 0 8px 30px rgba(26, 31, 54, 0.10);
  --shadow-lg: 0 16px 50px rgba(26, 31, 54, 0.14);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.logo-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  flex-shrink: 0;
  box-shadow: 0 0 0 4px rgba(255, 92, 56, 0.12);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  padding: 8px 4px;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 700;
}

.nav-cta {
  background: var(--color-primary);
  color: #fff;
  padding: 10px 22px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(255, 92, 56, 0.28);
}

.nav-cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(255, 92, 56, 0.36);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-bg);
  padding: 10px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.article-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  padding: 90px 0;
  overflow: hidden;
}

.article-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.article-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 31, 54, 0.90), rgba(124, 77, 255, 0.55));
}

.article-hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
  color: #fff;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 18px;
}

.article-breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
}

.article-breadcrumb a:hover {
  color: #fff;
}

.breadcrumb-sep {
  opacity: 0.5;
}

.article-category-badge {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 7px 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 6px 20px rgba(255, 92, 56, 0.35);
}

.article-hero h1 {
  font-size: 40px;
  line-height: 1.28;
  font-weight: 800;
  margin: 20px 0 18px;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 30px rgba(0, 0, 0, 0.15);
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.88);
}

.meta-dot {
  opacity: 0.5;
}

.article-main {
  padding: 64px 0 80px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
}

.article-content-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-sm);
}

.article-content {
  font-size: 17px;
  line-height: 1.95;
  color: #3d3a42;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-dark);
  margin: 44px 0 16px;
  letter-spacing: -0.3px;
}

.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
  margin: 32px 0 12px;
}

.article-content h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-dark);
  margin: 24px 0 10px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content a {
  color: var(--color-primary);
  border-bottom: 1px solid rgba(255, 92, 56, 0.3);
}

.article-content a:hover {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary);
}

.article-content strong {
  font-weight: 700;
  color: var(--color-dark);
}

.article-content ul,
.article-content ol {
  margin: 0 0 24px 24px;
}

.article-content ul li,
.article-content ol li {
  margin-bottom: 8px;
  padding-left: 6px;
}

.article-content ul li {
  list-style: disc;
}

.article-content ol li {
  list-style: decimal;
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 28px auto;
  box-shadow: var(--shadow-md);
}

.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-bg);
  padding: 18px 22px;
  margin: 28px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-light);
  font-size: 15px;
}

.article-content blockquote p:last-child {
  margin-bottom: 0;
}

.article-content pre {
  background: var(--color-dark);
  color: #e2e8f0;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.7;
}

.article-content code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.92em;
  background: var(--color-bg);
  padding: 2px 6px;
  border-radius: 4px;
}

.article-content pre code {
  background: transparent;
  padding: 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}

.article-content th,
.article-content td {
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  text-align: left;
}

.article-content th {
  background: var(--color-bg);
  font-weight: 700;
  color: var(--color-dark);
}

.article-footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.tag {
  display: inline-block;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-light);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 100px;
  transition: var(--transition);
}

.tag:hover {
  background: rgba(255, 92, 56, 0.1);
  color: var(--color-primary);
  border-color: rgba(255, 92, 56, 0.25);
}

.article-sidebar {
  display: grid;
  gap: 24px;
  position: sticky;
  top: 96px;
}

.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.sidebar-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 18px;
}

.sidebar-list {
  display: grid;
  gap: 6px;
}

.sidebar-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--color-text);
  padding: 9px 12px;
  border-radius: 10px;
  transition: var(--transition);
}

.sidebar-list a:hover {
  background: var(--color-bg);
  color: var(--color-primary);
  transform: translateX(4px);
}

.cat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.sidebar-list li:nth-child(1) .cat-dot { background: #ff6b6b; }
.sidebar-list li:nth-child(2) .cat-dot { background: #ffb340; }
.sidebar-list li:nth-child(3) .cat-dot { background: #4ecdc4; }
.sidebar-list li:nth-child(4) .cat-dot { background: #7c4dff; }
.sidebar-list li:nth-child(5) .cat-dot { background: var(--color-primary); }

.sidebar-chat {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #7c4dff, #ff5c38);
  border: none;
  color: #fff;
}

.sidebar-chat::before {
  content: "";
  position: absolute;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  top: -50px;
  right: -40px;
}

.sidebar-chat h3 {
  color: #fff;
  font-size: 20px;
}

.sidebar-chat p {
  font-size: 14px;
  line-height: 1.8;
  opacity: 0.92;
  margin-bottom: 20px;
}

.explore-section {
  padding: 80px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  background: rgba(255, 92, 56, 0.12);
  color: var(--color-primary);
  padding: 6px 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-dark);
  margin-top: 16px;
  letter-spacing: -0.5px;
  line-height: 1.3;
}

.section-head p {
  font-size: 16px;
  color: var(--color-text-light);
  margin-top: 12px;
}

.explore-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.explore-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.explore-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 92, 56, 0.25);
}

.explore-card-media {
  overflow: hidden;
  height: 180px;
}

.explore-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.explore-card:hover .explore-card-media img {
  transform: scale(1.05);
}

.explore-card-body {
  padding: 24px 24px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.explore-card-body h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.explore-card-body p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 16px;
}

.explore-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  transition: var(--transition);
}

.explore-card:hover .explore-link {
  gap: 10px;
}

.explore-arrow {
  font-size: 16px;
  line-height: 1;
}

.faq-section {
  padding: 80px 0;
  background: var(--color-bg);
}

.faq-grid {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 30px;
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: rgba(255, 92, 56, 0.2);
}

.faq-q {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 6px;
}

.faq-a {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

.cta-section {
  padding: 80px 0;
}

.cta-card {
  position: relative;
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  color: #fff;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}

.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 31, 54, 0.92), rgba(124, 77, 255, 0.72));
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 620px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.3;
  margin-bottom: 14px;
}

.cta-content p {
  font-size: 16px;
  opacity: 0.88;
  margin-bottom: 28px;
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 34px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 700;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 92, 56, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 92, 56, 0.4);
}

.btn-light {
  background: #fff;
  color: var(--color-dark);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
}

.btn-sm {
  padding: 10px 22px;
  font-size: 14px;
}

.btn:focus-visible,
.nav-link:focus-visible,
.nav-cta:focus-visible,
.explore-card:focus-visible {
  outline: 3px solid rgba(124, 77, 255, 0.45);
  outline-offset: 3px;
}

.not-found {
  text-align: center;
  padding: 60px 20px;
}

.not-found-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255, 92, 56, 0.12);
  color: var(--color-primary);
  font-size: 28px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}

.not-found h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 12px;
}

.not-found p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.site-footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.3px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 14px;
  max-width: 380px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  transition: var(--transition);
}

.footer-col a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a:hover {
  color: #fff;
}

@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
  }

  .explore-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 16px;
    right: 16px;
    background: var(--color-surface);
    border-radius: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 99;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-link {
    padding: 12px 16px;
    border-radius: 10px;
    text-align: center;
  }

  .nav-link::after {
    display: none;
  }

  .nav-link.active {
    background: rgba(255, 92, 56, 0.1);
  }

  .nav-cta {
    text-align: center;
    margin-top: 8px;
  }

  .article-hero {
    min-height: 320px;
    padding: 60px 0;
  }

  .article-hero h1 {
    font-size: 28px;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
    grid-template-columns: repeat(2, 1fr);
  }

  .article-content-card {
    padding: 32px 24px;
  }

  .article-content {
    font-size: 16px;
  }

  .explore-section {
    padding: 64px 0;
  }

  .section-head h2 {
    font-size: 26px;
  }

  .cta-card {
    padding: 48px 28px;
  }

  .cta-content h2 {
    font-size: 26px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: auto;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .logo {
    font-size: 17px;
  }

  .article-hero h1 {
    font-size: 24px;
  }

  .article-meta {
    font-size: 13px;
  }

  .article-sidebar {
    grid-template-columns: 1fr;
  }

  .explore-grid {
    grid-template-columns: 1fr;
  }

  .faq-item {
    padding: 20px;
  }

  .cta-card {
    padding: 40px 20px;
  }

  .btn {
    width: 100%;
  }
}

/* roulang page: category5 */
:root {
  --primary: #FF5A5F;
  --primary-dark: #E6424D;
  --accent: #FFB400;
  --dark: #1B1F2A;
  --dark-soft: #2A3040;
  --bg: #FFF8F3;
  --bg-soft: #FFF0E8;
  --text: #232733;
  --text-weak: #6B7280;
  --border: #F0E4DC;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 10px 40px rgba(255,90,95,.12);
  --shadow-lg: 0 20px 60px rgba(27,31,42,.14);
  --container: 1200px;
  --transition: .3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 248, 243, .88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(27, 31, 42, .05);
  transition: box-shadow var(--transition);
}
.site-header.scrolled {
  box-shadow: 0 10px 34px rgba(27, 31, 42, .09);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--dark);
  white-space: nowrap;
}
.logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 90, 95, .2);
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--dark-soft);
  transition: all var(--transition);
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(255, 90, 95, .08);
}
.nav-link.active {
  color: #fff;
  background: var(--primary);
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(255, 90, 95, .3);
}
.nav-cta {
  margin-left: 6px;
  padding: 9px 18px;
  border-radius: 999px;
  background: var(--dark);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition);
}
.nav-cta:hover {
  background: var(--primary);
  transform: translateY(-1px);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(255, 90, 95, .08);
  border: none;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 110px 0 90px;
  background:
    linear-gradient(rgba(27, 31, 42, .72), rgba(27, 31, 42, .78)),
    url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .25);
  font-size: 14px;
  letter-spacing: .5px;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero h1 {
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.25;
  font-weight: 900;
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.hero h1 span {
  color: var(--accent);
}
.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  color: rgba(255, 255, 255, .88);
  max-width: 680px;
  margin: 0 auto 36px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 54px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  transition: all var(--transition);
  border: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 30px rgba(255, 90, 95, .4);
}
.btn-primary:hover {
  background: #ff4045;
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(255, 90, 95, .5);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-ghost {
  background: rgba(255, 255, 255, .14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .4);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, .24);
  transform: translateY(-2px);
}
.btn-ghost:active {
  transform: translateY(0);
}
.hero-stats {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.stat-card {
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 16px;
  padding: 16px 28px;
  min-width: 150px;
  backdrop-filter: blur(8px);
  transition: all var(--transition);
}
.stat-card:hover {
  background: rgba(255, 255, 255, .18);
  transform: translateY(-3px);
}
.stat-num {
  font-size: 26px;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
}
.stat-label {
  font-size: 13px;
  color: rgba(255, 255, 255, .8);
  margin-top: 2px;
}

/* ===== Section ===== */
.section { padding: 88px 0; }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}
.section-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(255, 90, 95, .1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 900;
  color: var(--dark);
  line-height: 1.3;
}
.section-head p {
  color: var(--text-weak);
  margin-top: 12px;
  font-size: 16px;
}

/* ===== Features ===== */
.features { background: #fff; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 24px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover::before { opacity: 1; }
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: transparent;
}
.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  background: rgba(255, 90, 95, .1);
}
.feature-card:nth-child(2) .feature-icon { background: rgba(255, 180, 0, .14); }
.feature-card:nth-child(3) .feature-icon { background: rgba(56, 178, 172, .12); }
.feature-card:nth-child(4) .feature-icon { background: rgba(120, 96, 255, .12); }
.feature-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--dark);
}
.feature-card p {
  font-size: 14.5px;
  color: var(--text-weak);
  line-height: 1.75;
}

/* ===== Scenes ===== */
.scenes { background: var(--bg); }
.scenes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.scenes-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.scenes-media img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  transition: transform .6s ease;
}
.scenes-media:hover img { transform: scale(1.03); }
.scenes-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 55%, rgba(27, 31, 42, .4));
}
.scenes-content .section-tag { margin-bottom: 12px; }
.scenes-content h2 {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 900;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 12px;
}
.scenes-content > p {
  color: var(--text-weak);
  font-size: 16px;
  max-width: 480px;
}
.scene-list {
  margin-top: 26px;
  display: grid;
  gap: 14px;
}
.scene-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 18px;
  transition: all var(--transition);
}
.scene-list li:hover {
  border-color: rgba(255, 90, 95, .35);
  box-shadow: 0 8px 24px rgba(255, 90, 95, .08);
  transform: translateX(4px);
}
.scene-num {
  flex: 0 0 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255, 90, 95, .1);
  color: var(--primary);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.scene-list li div { flex: 1; }
.scene-list li strong {
  display: block;
  font-size: 16.5px;
  color: var(--dark);
  margin-bottom: 2px;
}
.scene-list li span {
  font-size: 14px;
  color: var(--text-weak);
}

/* ===== Steps ===== */
.steps { background: #fff; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.step-item {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 38px 26px 30px;
  text-align: center;
  transition: all var(--transition);
}
.step-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}
.step-num {
  font-size: 54px;
  font-weight: 900;
  color: rgba(255, 90, 95, .18);
  line-height: 1;
  margin-bottom: 14px;
  font-family: Georgia, "Times New Roman", serif;
}
.step-item h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}
.step-item p {
  font-size: 14.5px;
  color: var(--text-weak);
}

/* ===== Topics ===== */
.topics { background: var(--bg); }
.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.topic-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.topic-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.topic-cover {
  position: relative;
  height: 190px;
  overflow: hidden;
}
.topic-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.topic-card:hover .topic-cover img { transform: scale(1.06); }
.topic-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 55%, rgba(27, 31, 42, .55));
}
.topic-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(255, 255, 255, .92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
}
.topic-body {
  padding: 22px 24px 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.topic-body h3 {
  font-size: 19px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 6px;
}
.topic-body p {
  font-size: 14.5px;
  color: var(--text-weak);
  flex: 1;
}
.topic-meta {
  margin-top: 16px;
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-weak);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

/* ===== FAQ ===== */
.faq { background: #fff; }
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 14px;
  background: var(--bg-soft);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item.open {
  box-shadow: 0 8px 30px rgba(27, 31, 42, .07);
  border-color: rgba(255, 90, 95, .3);
}
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 20px 24px;
  background: transparent;
  border: none;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--dark);
  text-align: left;
  transition: color var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-icon {
  flex: 0 0 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 90, 95, .12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  transition: transform .35s ease, background var(--transition);
}
.faq-item.open .faq-q .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-a p {
  padding: 2px 24px 22px;
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(120deg, var(--primary), #ff7a45 60%, var(--accent));
}
.cta-box { text-align: center; color: #fff; }
.cta-box h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 900;
  margin-bottom: 14px;
}
.cta-box p {
  font-size: 17px;
  color: rgba(255, 255, 255, .92);
  margin-bottom: 32px;
}
.btn-light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--primary);
  font-weight: 800;
  padding: 15px 38px;
  font-size: 17px;
  border: none;
  border-radius: 999px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, .18);
  transition: all var(--transition);
}
.btn-light:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 18px 42px rgba(0, 0, 0, .24);
}
.btn-light:active {
  transform: translateY(0) scale(1);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, .72);
  padding: 70px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.footer-logo {
  font-size: 22px;
  font-weight: 900;
  color: #fff;
  display: block;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 14.5px;
  line-height: 1.9;
  max-width: 360px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 18px;
  font-weight: 700;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col a {
  font-size: 14.5px;
  color: rgba(255, 255, 255, .66);
  transition: all var(--transition);
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-bottom {
  padding-top: 26px;
  text-align: center;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .45);
}
.footer-bottom a {
  color: rgba(255, 255, 255, .6);
  transition: color var(--transition);
}
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .scenes-grid { grid-template-columns: 1fr; gap: 40px; }
  .scenes-media img { height: 380px; }
  .topics-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .container { width: calc(100% - 32px); }
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 16px;
    right: 16px;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-radius: 18px;
    padding: 14px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
  }
  .main-nav.open { display: flex; }
  .nav-cta {
    margin: 8px 0 0;
    text-align: center;
  }
  .section { padding: 60px 0; }
  .hero { padding: 80px 0 60px; }
  .steps-grid { grid-template-columns: 1fr; }
  .topics-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .section-head h2 { font-size: 28px; }
}

@media (max-width: 520px) {
  .features-grid { grid-template-columns: 1fr; }
  .hero-stats {
    flex-direction: column;
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
  }
  .stat-card { width: 100%; }
  .hero-actions .btn { width: 100%; }
  .scenes-media img { height: 260px; }
  .section-head p { font-size: 15px; }
}

/* roulang page: category3 */
:root {
  --primary: #FF6A3D;
  --primary-dark: #F04E1A;
  --primary-light: #FFE7D6;
  --accent: #FFB300;
  --accent-light: #FFF4D6;
  --dark: #221D2A;
  --text: #2D2A32;
  --text-light: #6B7280;
  --bg: #FFF9F4;
  --bg-alt: #FFF1E7;
  --white: #FFFFFF;
  --border: #F3E2D3;
  --radius: 18px;
  --radius-lg: 28px;
  --shadow: 0 12px 32px rgba(255, 106, 61, 0.08);
  --shadow-lg: 0 20px 48px rgba(255, 106, 61, 0.16);
  --font: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
  border-style: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button,
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

ul,
ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 249, 244, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(243, 226, 211, 0.7);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--dark);
  white-space: nowrap;
}

.logo-dot {
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  box-shadow: 0 4px 14px rgba(255, 106, 61, 0.35);
  flex-shrink: 0;
  position: relative;
}

.logo-dot::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 6px;
  background: var(--white);
  opacity: 0.9;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav .nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 15px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  transition: var(--transition);
}

.main-nav .nav-link:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.main-nav .nav-link.active {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 6px 18px rgba(255, 106, 61, 0.28);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 20px;
  border-radius: 999px;
  background: var(--dark);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 700;
  margin-left: 8px;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(255, 106, 61, 0.3);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--primary-light);
  padding: 10px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--dark);
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(115deg, rgba(34, 29, 42, 0.92) 0%, rgba(34, 29, 42, 0.72) 55%, rgba(34, 29, 42, 0.45) 100%),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  color: var(--white);
  overflow: hidden;
  padding: 90px 0 70px;
}

.hero::before {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 179, 0, 0.35) 0%, transparent 70%);
  top: -160px;
  right: -120px;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 106, 61, 0.3) 0%, transparent 70%);
  bottom: -100px;
  left: 15%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.hero-flag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: #FFE1A8;
  margin-bottom: 28px;
}

.flag-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ADE80;
  box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.25);
  animation: pulse 1.6s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}

.hero-title .highlight {
  color: var(--accent);
  position: relative;
  white-space: nowrap;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);
  max-width: 640px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 30px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 10px 28px rgba(255, 106, 61, 0.4);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(255, 106, 61, 0.45);
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: var(--white);
  backdrop-filter: blur(6px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
}

.btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  max-width: 760px;
}

.hero-stat {
  flex: 1 1 140px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  padding: 18px 22px;
  backdrop-filter: blur(8px);
  text-align: left;
  transition: var(--transition);
}

.hero-stat:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-4px);
}

.hero-stat strong {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}

.hero-stat span {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.75);
}

/* ========== Section Common ========== */
.section {
  padding: 96px 0;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--dark);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ========== Features ========== */
.features-section {
  background: var(--bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 106, 61, 0.35);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  font-size: 1.7rem;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.75;
}

/* ========== Scenes ========== */
.scenes-section {
  background: var(--bg-alt);
}

.scenes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.scene-card {
  display: flex;
  gap: 22px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.scene-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.scene-emoji {
  font-size: 2.4rem;
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 20px;
  background: var(--accent-light);
}

.scene-content h3 {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.scene-content p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.75;
}

/* ========== Steps ========== */
.steps-section {
  background: var(--bg);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  counter-reset: step;
}

.step-card {
  position: relative;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 38px 24px 32px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.step-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  font-size: 1.4rem;
  font-weight: 800;
  box-shadow: 0 8px 22px rgba(255, 106, 61, 0.3);
}

.step-title {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.step-text {
  font-size: 0.93rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* ========== Topics ========== */
.topics-section {
  background: var(--bg-alt);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.topic-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.topic-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.topic-img {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.topic-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.topic-card:hover .topic-img img {
  transform: scale(1.05);
}

.topic-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  box-shadow: 0 6px 16px rgba(255, 106, 61, 0.35);
}

.topic-body {
  padding: 24px;
}

.topic-body h3 {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.5;
  margin-bottom: 8px;
  min-height: 54px;
}

.topic-meta {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 16px;
}

.topic-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
}

.topic-link:hover {
  color: var(--primary-dark);
  gap: 10px;
}

/* ========== FAQ ========== */
.faq-section {
  background: var(--bg);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(255, 106, 61, 0.35);
  box-shadow: var(--shadow);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 26px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 1.3rem;
  font-weight: 700;
  transition: var(--transition);
}

.faq-item[open] summary::after {
  content: "−";
  background: var(--primary);
  color: var(--white);
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 26px 24px;
  font-size: 0.98rem;
  color: var(--text-light);
  line-height: 1.85;
}

/* ========== CTA ========== */
.cta-section {
  padding: 0 0 96px;
  background: var(--bg);
}

.cta-inner {
  position: relative;
  border-radius: 32px;
  padding: 72px 56px;
  text-align: center;
  background:
    linear-gradient(120deg, rgba(34, 29, 42, 0.92), rgba(255, 106, 61, 0.72)),
    url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
  color: var(--white);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-inner::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 179, 0, 0.25);
  top: -80px;
  right: -60px;
}

.cta-title {
  position: relative;
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 900;
  margin-bottom: 16px;
  line-height: 1.35;
}

.cta-subtitle {
  position: relative;
  font-size: 1.08rem;
  color: rgba(255, 255, 255, 0.88);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.85;
}

.cta-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.cta-actions .btn-primary {
  background: var(--accent);
  color: var(--dark);
  box-shadow: 0 12px 30px rgba(255, 179, 0, 0.35);
}

.cta-actions .btn-primary:hover {
  background: #FFC940;
  transform: translateY(-3px);
}

.cta-actions .btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: var(--white);
}

.cta-actions .btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-3px);
}

/* ========== Footer ========== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo {
  display: block;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.footer-brand p {
  font-size: 0.94rem;
  line-height: 1.85;
  max-width: 300px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-col h4 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.65);
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .topics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    position: sticky;
  }

  .header-inner {
    height: 62px;
  }

  .main-nav {
    position: fixed;
    top: 62px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 18px 24px 24px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    box-shadow: 0 20px 40px rgba(34, 29, 42, 0.08);
    transition: var(--transition);
    border-radius: 0 0 24px 24px;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .main-nav .nav-link,
  .main-nav .nav-cta {
    min-height: 46px;
    justify-content: flex-start;
    margin-left: 0;
    border-radius: 14px;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    min-height: 520px;
    padding: 70px 0 56px;
  }

  .hero-stats {
    gap: 12px;
  }

  .hero-stat {
    flex: 1 1 calc(50% - 12px);
    padding: 16px;
  }

  .section {
    padding: 72px 0;
  }

  .scenes-grid {
    grid-template-columns: 1fr;
  }

  .cta-inner {
    padding: 56px 30px;
    border-radius: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-brand p {
    max-width: 100%;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 20px;
  }

  .logo {
    font-size: 1rem;
  }

  .logo-dot {
    width: 26px;
    height: 26px;
    border-radius: 9px;
  }

  .logo-dot::after {
    inset: 7px;
    border-radius: 5px;
  }

  .hero {
    min-height: 500px;
    padding: 60px 0 46px;
  }

  .hero-title {
    font-size: 1.9rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    margin-bottom: 40px;
  }

  .btn {
    width: 100%;
  }

  .hero-stat strong {
    font-size: 1.3rem;
  }

  .features-grid,
  .steps-grid,
  .topics-grid {
    grid-template-columns: 1fr;
  }

  .step-card {
    padding: 30px 20px;
  }

  .section-title {
    font-size: 1.65rem;
  }

  .section-desc {
    font-size: 0.96rem;
  }

  .faq-item summary {
    padding: 18px 20px;
    font-size: 1rem;
  }

  .faq-answer {
    padding: 0 20px 20px;
  }

  .cta-inner {
    padding: 48px 24px;
  }

  .cta-title {
    font-size: 1.65rem;
  }

  .cta-subtitle {
    font-size: 0.98rem;
  }

  .topic-body h3 {
    min-height: 0;
  }
}