/* roulang page: index */
:root{
  --primary:#5B4BE7;
  --primary-light:#A78BFA;
  --primary-dark:#3B2E63;
  --accent:#14C7B1;
  --accent-hover:#0FA795;
  --gold:#F5B840;
  --gold-hover:#FF8C42;
  --bg-warm:#FAF9F6;
  --card-bg:#FFFFFF;
  --dark-bg:#1F1D33;
  --text-title:#242246;
  --text-body:#4A4965;
  --text-muted:#8A89A3;
  --border-color:#E8E6F0;
  --btn-radius:14px;
  --card-radius:16px;
  --card-radius-lg:24px;
  --shadow-sm:0 2px 8px rgba(91,75,231,.05),0 8px 24px rgba(91,75,231,.06);
  --shadow-hover:0 4px 16px rgba(91,75,231,.10),0 20px 48px rgba(91,75,231,.14);
  --transition:all .25s ease;
  --font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html,body{overflow-x:hidden}
body{
  font-family:var(--font-family);
  font-size:16px;
  line-height:1.75;
  color:var(--text-body);
  background:var(--bg-warm);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:var(--accent);transition:var(--transition)}
a:hover{color:var(--accent-hover)}
ul,ol{list-style:none}
.container{max-width:1200px}
h1,h2,h3,h4,h5,h6{color:var(--text-title);font-weight:800;line-height:1.3}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 32px;font-size:15px;font-weight:700;
  border-radius:var(--btn-radius);border:none;cursor:pointer;
  transition:var(--transition);letter-spacing:.02em;
}
.btn:focus{outline:4px solid rgba(91,75,231,.15);outline-offset:2px}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#8B5CF6);
  color:#fff;box-shadow:0 8px 20px rgba(91,75,231,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(91,75,231,.35);color:#fff}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(91,75,231,.24)}
.btn-gold{
  background:linear-gradient(135deg,var(--gold),var(--gold-hover));
  color:#2B2440;box-shadow:0 8px 20px rgba(245,184,64,.32);
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(245,184,64,.42);color:#2B2440}
.btn-gold:active{transform:translateY(1px)}
.btn-outline-light{
  background:transparent;border:1.5px solid rgba(255,255,255,.7);
  color:#fff;box-shadow:none;
}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-2px)}
.btn-outline-light:active{transform:translateY(0)}

.section-header{margin-bottom:48px;text-align:center}
.section-tag{
  display:inline-block;background:rgba(91,75,231,.08);
  color:var(--primary);font-size:13px;font-weight:600;
  padding:6px 18px;border-radius:20px;margin-bottom:12px;letter-spacing:.04em;
}
.section-header h2{
  font-size:clamp(1.5rem,3vw,2.375rem);
  font-weight:800;position:relative;display:inline-block;margin-bottom:16px;
}
.section-header h2::after{
  content:"";display:block;width:40px;height:4px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  border-radius:2px;margin:12px auto 0;
}
.section-header p{color:var(--text-muted);max-width:600px;margin:0 auto;font-size:15px}
.section-padding{padding:80px 0}
@media (max-width:768px){.section-padding{padding:48px 0}}

/* ===== Header / Nav ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:72px;background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(232,230,240,.7);
  transition:var(--transition);
}
.site-header.scrolled{box-shadow:0 4px 20px rgba(31,29,51,.08);background:#fff}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-logo .logo-icon{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;
  box-shadow:0 4px 12px rgba(91,75,231,.24);
}
.brand-logo .logo-icon i{font-size:18px}
.brand-logo .logo-text{
  font-size:19px;font-weight:800;color:var(--text-title);letter-spacing:.01em;
  line-height:1.2;white-space:nowrap;
}
.desktop-nav{display:flex;align-items:center;gap:8px;margin-left:24px}
.desktop-nav .nav-link{
  display:inline-flex;align-items:center;height:48px;padding:0 20px;
  font-size:15px;font-weight:600;color:var(--text-body);
  border-radius:12px;position:relative;transition:var(--transition);
}
.desktop-nav .nav-link:hover{color:var(--primary);background:rgba(91,75,231,.04)}
.desktop-nav .nav-link.active{color:var(--primary)}
.desktop-nav .nav-link.active::after{
  content:"";position:absolute;bottom:4px;left:50%;transform:translateX(-50%);
  width:28px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.header-cta{flex-shrink:0;height:44px;padding:0 24px;font-size:14px}
.navbar-toggler-custom{
  display:none;width:44px;height:44px;border:none;background:transparent;
  cursor:pointer;border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.navbar-toggler-custom .bar{display:block;width:22px;height:2px;background:var(--text-title);border-radius:2px;transition:var(--transition)}
.navbar-toggler-custom:hover{background:rgba(91,75,231,.06)}

/* Mobile overlay menu */
.mobile-overlay{
  position:fixed;inset:0;z-index:1100;background:linear-gradient(160deg,#1F1D33 0%,#3B2E63 100%);
  transform:translateY(-100%);transition:transform .4s cubic-bezier(.77,0,.18,1);
  display:flex;flex-direction:column;padding:24px 32px;overflow-y:auto;
}
.mobile-overlay.open{transform:translateY(0)}
.mobile-menu-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:40px}
.mobile-brand{color:#fff;font-size:20px;font-weight:800;letter-spacing:.02em}
.menu-close{
  width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.1);
  border:none;color:#fff;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:var(--transition);
}
.menu-close:hover{background:rgba(255,255,255,.2);transform:rotate(90deg)}
.mobile-links{display:flex;flex-direction:column;gap:4px;margin-bottom:32px}
.mobile-link{
  color:rgba(255,255,255,.85);font-size:18px;font-weight:600;
  padding:12px 0;border-bottom:1px solid rgba(255,255,255,.08);transition:var(--transition);
}
.mobile-link:hover{color:var(--gold);padding-left:8px}
.mobile-link.active{color:var(--gold)}
.mobile-cta{display:flex;flex-direction:column;gap:16px;margin-top:auto}
.mobile-cta .btn{width:100%;height:52px}
.mobile-contact{color:rgba(255,255,255,.6);text-align:center;font-size:14px;margin-top:8px}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:88vh;display:flex;align-items:center;
  background:linear-gradient(135deg,rgba(31,29,51,.92),rgba(91,75,231,.72)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding-top:120px;padding-bottom:60px;color:#fff;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  background:rgba(167,139,250,.16);filter:blur(120px);top:-100px;right:-80px;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:360px;height:360px;border-radius:50%;
  background:rgba(245,184,64,.12);filter:blur(100px);bottom:-60px;left:10%;pointer-events:none;
}
.hero-content{position:relative;z-index:2;max-width:680px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);padding:6px 16px;border-radius:20px;
  font-size:13px;font-weight:600;color:#fff;margin-bottom:24px;letter-spacing:.03em;backdrop-filter:blur(4px);
}
.hero-badge i{color:var(--gold)}
.hero h1{
  font-size:clamp(2.125rem,4.2vw,3.25rem);
  font-weight:900;line-height:1.25;color:#fff;letter-spacing:-.01em;
  margin-bottom:20px;text-shadow:0 2px 20px rgba(0,0,0,.15);
}
.hero .hero-sub{
  font-size:clamp(1rem,1.5vw,1.125rem);
  color:rgba(255,255,255,.82);line-height:1.7;margin-bottom:36px;max-width:520px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px}
.hero-stats{display:flex;gap:32px;flex-wrap:wrap}
.hero-stat{position:relative;padding-left:20px}
.hero-stat::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:36px;border-radius:2px;background:linear-gradient(var(--gold),var(--gold-hover));
}
.hero-stat .num{font-size:clamp(1.4rem,2.4vw,1.875rem);font-weight:800;color:var(--gold);font-family:"Inter",system-ui,sans-serif;line-height:1.2}
.hero-stat .label{font-size:13px;color:rgba(255,255,255,.7);margin-top:2px}
.hero-visual{position:relative;z-index:2;display:flex;align-items:center;justify-content:center}
.hero-visual .visual-card{
  width:100%;max-width:420px;border-radius:var(--card-radius-lg);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  backdrop-filter:blur(8px);padding:24px;box-shadow:0 20px 60px rgba(0,0,0,.2);
}
.hero-visual .visual-card img{border-radius:16px;width:100%;height:220px;object-fit:cover;margin-bottom:16px}
.hero-visual .visual-title{color:#fff;font-size:16px;font-weight:700;margin-bottom:8px}
.hero-visual .visual-desc{color:rgba(255,255,255,.7);font-size:14px;line-height:1.6}

/* ===== Stats strip ===== */
.stats-strip{
  background:#fff;border-bottom:1px solid var(--border-color);
  padding:40px 0;box-shadow:var(--shadow-sm);position:relative;z-index:5;
}
.stat-card{
  text-align:center;padding:24px 16px;border-radius:var(--card-radius);
  background:var(--bg-warm);border:1px solid var(--border-color);
  transition:var(--transition);height:100%;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);background:#fff}
.stat-card .stat-value{
  font-size:clamp(2rem,4vw,3rem);font-weight:800;color:var(--primary);
  font-family:"Inter",system-ui,sans-serif;line-height:1.2;margin-bottom:4px;
}
.stat-card .stat-value.gold{color:var(--gold)}
.stat-card .stat-value.green{color:var(--accent)}
.stat-card .stat-label{font-size:14px;color:var(--text-muted);font-weight:500}

/* ===== Timeline ===== */
.timeline-section{background:var(--bg-warm);padding:80px 0}
.timeline-wrap{position:relative;padding:20px 0}
.timeline-wrap::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,rgba(91,75,231,.3),rgba(20,199,177,.3));
  transform:translateX(-50%);
}
.timeline-item{position:relative;width:50%;padding:0 48px 48px 0;margin-bottom:16px}
.timeline-item:nth-child(even){left:50%;padding:0 0 48px 48px}
.timeline-item:last-child{margin-bottom:0}
.timeline-dot{
  position:absolute;top:6px;right:-15px;width:30px;height:30px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  border:4px solid #fff;box-shadow:0 0 0 2px var(--primary),0 4px 12px rgba(91,75,231,.25);
  z-index:5;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:13px;font-weight:700;
}
.timeline-item:nth-child(even) .timeline-dot{left:-15px;right:auto}
.timeline-card{
  background:#fff;border-radius:var(--card-radius);padding:24px;
  box-shadow:var(--shadow-sm);border:1px solid var(--border-color);
  transition:var(--transition);
}
.timeline-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.timeline-year{
  display:inline-block;font-size:13px;font-weight:700;color:var(--gold);
  background:rgba(245,184,64,.1);padding:4px 14px;border-radius:20px;margin-bottom:10px;
}
.timeline-card h3{font-size:1.125rem;font-weight:700;margin-bottom:8px}
.timeline-card p{font-size:14px;color:var(--text-muted);line-height:1.7;margin:0}

/* ===== Highlights ===== */
.highlights-section{background:#fff;padding:80px 0}
.highlight-main{
  background:var(--bg-warm);border:1px solid var(--border-color);
  border-radius:var(--card-radius-lg);overflow:hidden;
  display:flex;flex-direction:column;height:100%;
  transition:var(--transition);
}
.highlight-main:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.highlight-main .highlight-cover{overflow:hidden;height:240px}
.highlight-main .highlight-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.highlight-main:hover .highlight-cover img{transform:scale(1.03)}
.highlight-main .highlight-body{padding:28px}
.highlight-main h3{font-size:1.25rem;font-weight:700;margin-bottom:12px}
.highlight-main p{font-size:15px;color:var(--text-body);line-height:1.75;margin-bottom:16px}
.highlight-feature{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted)}
.highlight-feature i{color:var(--accent)}
.highlight-sub{
  background:var(--bg-warm);border:1px solid var(--border-color);
  border-radius:var(--card-radius);padding:24px;height:100%;
  display:flex;flex-direction:column;transition:var(--transition);
}
.highlight-sub:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.highlight-sub .sub-icon{
  width:56px;height:56px;border-radius:16px;margin-bottom:16px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;
  box-shadow:0 6px 16px rgba(91,75,231,.22);
}
.highlight-sub .sub-icon.green{background:linear-gradient(135deg,var(--accent),#0FA795);box-shadow:0 6px 16px rgba(20,199,177,.22)}
.highlight-sub h3{font-size:1.05rem;font-weight:700;margin-bottom:10px}
.highlight-sub p{font-size:14px;color:var(--text-muted);line-height:1.7;margin:0}

/* ===== Plans ===== */
.plans-section{background:var(--bg-warm);padding:80px 0}
.plan-card{
  background:#fff;border:1px solid var(--border-color);border-radius:var(--card-radius-lg);
  padding:32px 28px;height:100%;position:relative;
  transition:var(--transition);box-shadow:0 2px 10px rgba(91,75,231,.04);
}
.plan-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.plan-card.recommended{
  background:linear-gradient(180deg,rgba(91,75,231,.04),rgba(255,255,255,1));
  border:2px solid var(--primary);padding:40px 28px 36px;
  transform:scale(1.03);z-index:2;box-shadow:0 8px 32px rgba(91,75,231,.12);
}
.plan-card.recommended:hover{transform:scale(1.03) translateY(-4px)}
.plan-badge{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:linear-gradient(135deg,var(--gold),var(--gold-hover));
  color:#2B2440;font-size:13px;font-weight:700;
  padding:5px 20px;border-radius:20px;white-space:nowrap;
  box-shadow:0 4px 14px rgba(245,184,64,.35);
}
.plan-name{font-size:1.125rem;font-weight:700;color:var(--text-title);margin-bottom:6px}
.plan-price{font-size:clamp(1.75rem,3vw,2.25rem);font-weight:800;color:var(--primary);font-family:"Inter",system-ui,sans-serif;margin-bottom:4px}
.plan-desc{font-size:14px;color:var(--text-muted);margin-bottom:24px}
.plan-list{margin-bottom:28px}
.plan-list li{
  display:flex;align-items:flex-start;gap:10px;padding:6px 0;
  font-size:14px;color:var(--text-body);line-height:1.6;
}
.plan-list li i{color:var(--accent);margin-top:3px;font-size:13px}
.plan-card.recommended .plan-list li i{color:var(--primary)}
.plan-btn{width:100%}

/* ===== News ===== */
.news-section{background:#fff;padding:80px 0}
.news-card{
  display:block;background:#fff;border:1px solid var(--border-color);
  border-radius:var(--card-radius);overflow:hidden;height:100%;
  transition:var(--transition);box-shadow:0 2px 8px rgba(31,29,51,.04);
}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.news-cover{position:relative;height:200px;overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-tag{
  position:absolute;top:12px;left:12px;
  background:rgba(20,199,177,.92);color:#fff;
  font-size:12px;font-weight:600;padding:3px 12px;border-radius:12px;
  backdrop-filter:blur(4px);letter-spacing:.02em;
}
.news-body{padding:20px 22px 24px}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--text-muted);margin-bottom:8px}
.news-meta i{font-size:12px;margin-right:4px}
.news-body h3{
  font-size:1.0625rem;font-weight:700;color:var(--text-title);
  line-height:1.45;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;min-height:2.9em;
}
.news-body .news-excerpt{
  font-size:14px;color:var(--text-muted);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:14px;
}
.news-link{
  font-size:14px;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;transition:var(--transition);
}
.news-card:hover .news-link{color:var(--accent);gap:10px}
.news-link i{font-size:12px}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:60px 24px;border:2px dashed var(--border-color);border-radius:var(--card-radius-lg);
  background:var(--bg-warm);text-align:center;
}
.empty-state i{font-size:40px;color:var(--text-muted);margin-bottom:16px;opacity:.5}
.empty-state p{font-size:15px;color:var(--text-muted);margin:0}

/* ===== FAQ ===== */
.faq-section{background:var(--bg-warm);padding:80px 0}
.faq-wrap{max-width:760px;margin:0 auto}
.accordion-item{
  background:#fff;border:1px solid var(--border-color) !important;
  border-radius:16px !important;margin-bottom:12px;overflow:hidden;
  transition:var(--transition);
}
.accordion-item:hover{border-color:rgba(91,75,231,.35) !important;box-shadow:0 4px 16px rgba(91,75,231,.05)}
.accordion-header{border:none !important;background:transparent}
.accordion-button{
  font-size:15px !important;font-weight:600 !important;color:var(--text-title) !important;
  background:transparent !important;padding:20px 24px !important;
  box-shadow:none !important;display:flex;align-items:center;
}
.accordion-button::after{
  width:22px;height:22px;border-radius:50%;
  background:rgba(91,75,231,.08);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235B4BE7'%3E%3Cpath fill-rule='evenodd' d='M8 2a.5.5 0 0 1 .5.5v5h5a.5.5 0 0 1 0 1h-5v5a.5.5 0 0 1-1 0v-5h-5a.5.5 0 0 1 0-1h5v-5A.5.5 0 0 1 8 2Z'/%3E%3C/svg%3E");
  background-size:10px;background-position:center;background-repeat:no-repeat;
  transition:var(--transition);
}
.accordion-button:not(.collapsed){
  background:transparent !important;color:var(--primary) !important;
  border-left:3px solid var(--primary);
}
.accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235B4BE7'%3E%3Cpath fill-rule='evenodd' d='M2 8a.5.5 0 0 1 .5-.5h11a.5.5 0 0 1 0 1h-11A.5.5 0 0 1 2 8Z'/%3E%3C/svg%3E");
  transform:rotate(0);
}
.accordion-button:focus{box-shadow:none !important;outline:4px solid rgba(91,75,231,.1) !important}
.accordion-body{padding:0 24px 20px !important;font-size:14px;color:var(--text-muted);line-height:1.7;border-left:3px solid var(--primary)}
.accordion-collapse{border:none !important}

/* ===== CTA ===== */
.cta-section{
  position:relative;padding:96px 0;
  background:linear-gradient(120deg,#5B4BE7,#7A5AF8,#A78BFA);
  overflow:hidden;color:#fff;
}
.cta-section::before{
  content:"";position:absolute;width:600px;height:600px;border-radius:50%;
  background:rgba(255,255,255,.07);filter:blur(80px);top:-200px;right:-100px;
}
.cta-section::after{
  content:"";position:absolute;width:400px;height:400px;border-radius:50%;
  background:rgba(245,184,64,.12);filter:blur(100px);bottom:-120px;left:5%;
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:640px;margin:0 auto}
.cta-inner h2{color:#fff;font-size:clamp(1.5rem,3vw,2.125rem);font-weight:800;margin-bottom:12px}
.cta-inner .cta-sub{color:rgba(255,255,255,.8);font-size:15px;margin-bottom:40px}
.cta-form-card{
  background:#fff;border-radius:20px;padding:32px;
  box-shadow:0 24px 60px rgba(0,0,0,.18);text-align:left;max-width:520px;margin:0 auto;
}
.form-label{font-size:14px;font-weight:600;color:var(--text-title);margin-bottom:8px}
.form-control{
  height:48px;border:1px solid #D9D6E8;border-radius:12px;
  padding:0 14px;font-size:14px;color:var(--text-title);
  background:#fff;transition:var(--transition);
}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(91,75,231,.12);outline:none}
.form-select{
  height:48px;border:1px solid #D9D6E8;border-radius:12px;
  padding:0 40px 0 14px;font-size:14px;color:var(--text-title);
  background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%238A89A3'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E") no-repeat right 14px center/12px;
}
.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(91,75,231,.12);outline:none}
.form-control::placeholder{color:#B4B2C8}
.form-success{
  display:none;background:rgba(20,199,177,.08);border:1px solid rgba(20,199,177,.3);
  border-radius:12px;padding:16px;font-size:14px;color:var(--accent-hover);
  text-align:center;font-weight:600;margin-top:16px;
}
.cta-submit{width:100%;height:52px;font-size:16px}
.form-hint{font-size:13px;color:var(--text-muted);text-align:center;margin-top:12px}
.cta-note{color:rgba(255,255,255,.6);font-size:13px;margin-top:20px}

/* ===== Footer ===== */
.site-footer{background:var(--dark-bg);color:rgba(255,255,255,.7)}
.footer-top{padding:64px 0 48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-icon{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;
}
.footer-brand .logo-text{font-size:17px;font-weight:800;color:#fff}
.footer-desc{font-size:14px;line-height:1.7;margin-bottom:20px;max-width:280px;color:rgba(255,255,255,.6)}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.15);
  display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.7);font-size:14px;transition:var(--transition);
}
.footer-social a:hover{
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  border-color:transparent;color:#fff;transform:translateY(-2px);
}
.footer-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:20px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.6);font-size:14px;transition:var(--transition)}
.footer-links a:hover{color:var(--gold);padding-left:4px}
.footer-contact li{
  display:flex;align-items:flex-start;gap:12px;font-size:14px;
  color:rgba(255,255,255,.6);margin-bottom:14px;line-height:1.6;
}
.footer-contact i{color:var(--gold);margin-top:4px;width:16px;text-align:center}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.4);
}
.footer-bottom span{margin:0 6px}
.footer-bottom a{color:rgba(255,255,255,.5)}

/* ===== Responsive ===== */
@media (max-width:991.98px){
  .desktop-nav{display:none}
  .navbar-toggler-custom{display:flex}
  .header-cta{display:none}
  .mobile-overlay{display:flex}
  .timeline-item{width:100%;padding-right:0;padding-left:40px}
  .timeline-item:nth-child(even){left:0;padding-left:40px;padding-right:0}
  .timeline-item .timeline-dot{left:0 !important;right:auto !important}
  .timeline-wrap::before{left:15px;transform:none}
  .plan-card.recommended{transform:scale(1)}
  .plan-card.recommended:hover{transform:scale(1) translateY(-4px)}
}
@media (max-width:767.98px){
  .section-padding{padding:48px 0}
  .hero{padding-top:110px;padding-bottom:48px;min-height:auto}
  .hero-actions .btn{width:100%}
  .hero-visual{display:none}
  .hero-stats{flex-direction:column;gap:16px}
  .stats-strip{padding:24px 0}
  .stat-card{padding:18px 12px}
  .timeline-item{padding-left:32px}
  .timeline-wrap::before{left:10px}
  .timeline-item .timeline-dot{width:22px;height:22px;font-size:11px;left:0 !important}
  .timeline-card{padding:18px}
  .highlight-sub{margin-top:12px}
  .cta-form-card{padding:20px}
  .btn{min-height:44px;height:44px}
  .form-control,.form-select{height:44px}
  .footer-top .row > [class*=col-]{margin-bottom:32px}
}
@media (max-width:520px){
  .hero h1{font-size:1.875rem}
  .hero-badge{font-size:12px}
  .section-header{margin-bottom:32px}
  .section-header h2{font-size:1.4rem}
  .plan-card.recommended{padding:36px 20px 28px}
}

/* roulang page: article */
:root {
  --primary: #5B4BE7;
  --primary-dark: #4A3FD1;
  --primary-light: #A78BFA;
  --secondary: #14C7B1;
  --secondary-dark: #0FA795;
  --gold: #F5B840;
  --gold-light: #FF8C42;
  --bg: #FAF9F6;
  --card-bg: #FFFFFF;
  --dark: #1F1D33;
  --heading: #242246;
  --text: #4A4965;
  --muted: #8A89A3;
  --border: #E8E6F0;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow: 0 2px 8px rgba(91,75,231,.05), 0 8px 24px rgba(91,75,231,.06);
  --shadow-hover: 0 4px 16px rgba(91,75,231,.10), 0 20px 48px rgba(91,75,231,.14);
  --gradient: linear-gradient(135deg, #5B4BE7 0%, #A78BFA 100%);
  --gradient-gold: linear-gradient(135deg, #F5B840 0%, #FF8C42 100%);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  padding-top: 72px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s; }
button, input, select, textarea { font-family: inherit; }

/* ===== Header / Navigation ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  height: 72px;
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, background .3s, border-color .3s;
}
.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(31,29,51,.08);
  border-color: rgba(232,230,240,.8);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gradient);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  box-shadow: 0 4px 12px rgba(91,75,231,.3);
  transition: transform .25s;
}
.brand-logo:hover .logo-icon { transform: rotate(-6deg) scale(1.05); }
.logo-text {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--heading);
  letter-spacing: .02em;
  white-space: nowrap;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 6px 2px;
  transition: color .25s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 3px;
  border-radius: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s;
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { transform: scaleX(1); }

.btn {
  border-radius: 12px;
  font-weight: 600;
  transition: all .25s;
  line-height: 1.2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn:focus, .btn:focus-visible { outline: none; box-shadow: 0 0 0 4px rgba(91,75,231,.18); }
.btn-gold {
  background: var(--gradient-gold);
  color: #2B2440;
  border: none;
  box-shadow: 0 8px 20px rgba(245,184,64,.35);
  height: 48px;
  padding: 0 32px;
  font-weight: 600;
}
.btn-gold:hover { color: #2B2440; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(245,184,64,.42); }
.btn-gold:active { transform: translateY(0); box-shadow: 0 6px 16px rgba(245,184,64,.3); }
.header-cta {
  height: 42px;
  padding: 0 24px;
  border-radius: 12px;
  font-size: 14px;
  border: none;
  flex-shrink: 0;
}
.navbar-toggler-custom {
  display: none;
  width: 42px;
  height: 42px;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  padding: 0;
}
.navbar-toggler-custom .bar {
  width: 24px;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.navbar-toggler-custom.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-toggler-custom.active .bar:nth-child(2) { opacity: 0; }
.navbar-toggler-custom.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 990;
  background: linear-gradient(160deg, #1F1D33 0%, #3B2E63 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s, visibility .35s;
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 40px 24px;
  text-align: center;
}
.mobile-link {
  color: rgba(255,255,255,.9);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 2.2;
  transition: color .25s, transform .25s;
  padding: 6px 0;
}
.mobile-link:hover { color: var(--gold); transform: translateX(4px); }
.mobile-link.active { color: var(--gold); }
.mobile-cta { margin-top: 20px; min-width: 160px; }

/* ===== Breadcrumb ===== */
.breadcrumb-wrap {
  background: linear-gradient(135deg, rgba(91,75,231,.06) 0%, rgba(167,139,250,.1) 100%);
  padding: 40px 0 24px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
}
.breadcrumb-item { font-size: 14px; }
.breadcrumb-item a { color: var(--muted); }
.breadcrumb-item a:hover { color: var(--primary); }
.breadcrumb-item.active { color: var(--heading); font-weight: 500; }
.breadcrumb-item + .breadcrumb-item { padding-left: 0; }
.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--muted);
  padding: 0 10px;
  float: none;
}

/* ===== Article Main ===== */
.article-main { padding-bottom: 64px; }
.article-wrap { max-width: 800px; margin: 0 auto; }
.article-wrap h1 {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 800;
  color: var(--heading);
  line-height: 1.3;
  margin-bottom: 24px;
  letter-spacing: -.01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  align-items: center;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.meta-cat {
  background: rgba(20,199,177,.12);
  color: var(--secondary-dark);
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 13px;
}
.article-cover {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 36px;
  box-shadow: var(--shadow);
}
.article-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* Article body typography */
.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text);
}
.article-body h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--heading);
  margin: 2.2em 0 .8em;
  padding-bottom: .5em;
  border-bottom: 2px solid var(--border);
  line-height: 1.3;
}
.article-body h3 {
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--heading);
  margin: 1.8em 0 .6em;
  line-height: 1.4;
}
.article-body p {
  font-size: inherit;
  line-height: 1.85;
  margin-bottom: 1.5em;
  color: var(--text);
}
.article-body img {
  border-radius: var(--radius-md);
  max-width: 100%;
  height: auto;
  margin: 1.5em 0;
  box-shadow: var(--shadow);
}
.article-body a {
  color: var(--secondary-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-body a:hover { color: var(--primary); }
.article-body ul,
.article-body ol {
  padding-left: 1.5em;
  margin-bottom: 1.5em;
}
.article-body li { margin-bottom: .5em; }
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: #F4F2FC;
  padding: 1.2em 1.5em;
  border-radius: 0 12px 12px 0;
  margin: 1.5em 0;
  color: var(--heading);
  font-style: normal;
}
.article-body code {
  background: #F0EEF7;
  border-radius: 6px;
  padding: .2em .5em;
  font-size: .92em;
  color: var(--primary-dark);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.article-body pre {
  background: var(--dark);
  color: #E8E6F0;
  padding: 1.5em;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 1.5em;
  border: 1px solid rgba(255,255,255,.08);
}
.article-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
  font-size: .92em;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5em;
  font-size: .95em;
}
.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-body th { background: var(--bg); color: var(--heading); font-weight: 600; }

.not-found {
  text-align: center;
  padding: 64px 24px;
  background: #F5F4FA;
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border);
}
.not-found i { font-size: 3rem; color: var(--primary-light); margin-bottom: 16px; }
.not-found p { font-size: 1.15rem; font-weight: 600; color: var(--heading); margin-bottom: 20px; }

/* ===== Tags ===== */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.tag {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 16px;
  transition: all .25s;
}
.tag:hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}
.tag i { margin-right: 6px; font-size: 12px; }

/* ===== Related Section ===== */
.related-section {
  padding: 80px 0;
  background: #FFFFFF;
  border-top: 1px solid var(--border);
}
.section-head { text-align: center; margin-bottom: 48px; }
.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--heading);
  position: relative;
  display: inline-block;
  line-height: 1.3;
}
.section-head h2::after {
  content: "";
  display: block;
  width: 40px;
  height: 4px;
  background: var(--gradient);
  border-radius: 4px;
  margin: 12px auto 0;
}
.section-head p {
  color: var(--muted);
  font-size: 15px;
  margin-top: 12px;
}
.related-card {
  display: block;
  background: var(--bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s;
  height: 100%;
  border: 1px solid var(--border);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.related-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #E4E0F5, #D6F5F9);
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s;
}
.related-card:hover .related-thumb img { transform: scale(1.04); }
.related-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(20,199,177,.92);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
}
.related-body { padding: 24px 24px 20px; }
.related-meta {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
}
.related-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--heading);
  line-height: 1.45;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .25s;
}
.related-card:hover .related-body h3 { color: var(--primary); }
.related-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.related-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--secondary-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.related-link i { transition: transform .2s; font-size: 13px; }
.related-card:hover .related-link i { transform: translateX(4px); }

/* ===== CTA Section ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(120deg, #5B4BE7 0%, #7A5AF8 50%, #A78BFA 100%);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -15%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(255,255,255,.12) 0%, transparent 65%);
  border-radius: 50%;
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(245,184,64,.18) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 48px;
  max-width: 680px;
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(31,29,51,.25);
  position: relative;
  z-index: 1;
}
.cta-card h2 {
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
  font-weight: 800;
  color: var(--heading);
  text-align: center;
  line-height: 1.35;
}
.cta-card > p {
  text-align: center;
  color: var(--muted);
  font-size: 15px;
  margin: 12px 0 32px;
}
.cta-form .form-control,
.cta-form .form-select {
  height: 48px;
  border: 1px solid #D9D6E8;
  border-radius: 12px;
  padding: 0 16px;
  font-size: 15px;
  background: #fff;
  color: var(--text);
  transition: border-color .25s, box-shadow .25s;
}
.cta-form .form-control:focus,
.cta-form .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(91,75,231,.12);
}
.cta-form .form-control::placeholder { color: #B4B2C8; }
.cta-form .btn-gold { width: 100%; height: 48px; border: none; border-radius: 12px; font-size: 15px; cursor: pointer; }
.cta-form .btn-gold:focus { box-shadow: 0 0 0 4px rgba(245,184,64,.35); }
.form-status {
  margin-top: 12px;
  font-size: 14px;
  text-align: center;
  display: none;
  padding: 10px;
  border-radius: 8px;
}
.form-status.show { display: block; }
.form-status.success { color: var(--secondary-dark); background: rgba(20,199,177,.1); }

/* ===== Footer ===== */
.site-footer {
  background: #1F1D33;
  color: rgba(255,255,255,.75);
}
.footer-top { padding: 64px 0 40px; }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-icon { background: var(--gradient-gold); color: #2B2440; box-shadow: none; }
.footer-brand .logo-text {
  color: #fff;
  font-size: 1.15rem;
  font-weight: 700;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.75;
  opacity: .72;
  max-width: 340px;
  margin-bottom: 0;
}
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.75);
  font-size: 14px;
  transition: all .25s;
}
.footer-social a:hover {
  background: var(--gradient);
  border-color: transparent;
  color: #fff;
  transform: translateY(-2px);
}
.footer-title {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: rgba(255,255,255,.6);
  font-size: 14px;
  transition: color .25s, padding-left .25s;
}
.footer-links a:hover { color: var(--gold); padding-left: 4px; }
.footer-contact { list-style: none; padding: 0; margin: 0; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,.6);
  font-size: 14px;
  margin-bottom: 12px;
}
.footer-contact i { color: var(--gold); width: 18px; flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,.45);
  flex-wrap: wrap;
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .desktop-nav, .header-cta { display: none; }
  .navbar-toggler-custom { display: flex; }
  .article-wrap { max-width: 720px; }
}

@media (max-width: 767.98px) {
  body { padding-top: 64px; }
  .site-header, .header-inner { height: 64px; }
  .breadcrumb-wrap { padding: 24px 0 20px; margin-bottom: 36px; }
  .article-main { padding-bottom: 48px; }
  .article-wrap h1 { font-size: 1.5rem; line-height: 1.35; }
  .article-meta { gap: 10px 14px; font-size: 13px; }
  .article-cover { border-radius: var(--radius-md); margin-bottom: 28px; }
  .article-body { font-size: 1rem; }
  .article-body h2 { font-size: 1.35rem; }
  .article-body h3 { font-size: 1.15rem; }
  .article-tags { margin-top: 28px; padding-top: 22px; }
  .related-section { padding: 56px 0; }
  .section-head { margin-bottom: 36px; }
  .cta-section { padding: 56px 0; }
  .cta-card { padding: 32px 24px; }
  .cta-form .btn-gold { width: 100%; }
  .footer-top { padding: 48px 0 24px; }
  .footer-top .row { row-gap: 32px; }
  .footer-bottom .container { gap: 8px; flex-direction: column; text-align: center; }
}

@media (max-width: 575.98px) {
  .logo-text { font-size: 1.05rem; }
  .logo-icon { width: 34px; height: 34px; font-size: 15px; }
  .breadcrumb-wrap { padding: 18px 0 16px; margin-bottom: 28px; }
  .related-body { padding: 20px 20px 16px; }
  .related-meta { flex-direction: column; gap: 2px; }
}

/* roulang page: category1 */
:root {
  --primary: #5B4BE7;
  --primary-light: #A78BFA;
  --primary-dark: #3B2E63;
  --secondary: #14C7B1;
  --secondary-dark: #0FA795;
  --gold: #F5B840;
  --gold-deep: #FF8C42;
  --bg-warm: #FAF9F6;
  --card-bg: #FFFFFF;
  --dark-night: #1F1D33;
  --text-title: #242246;
  --text-body: #4A4965;
  --text-muted: #8A89A3;
  --border-color: #E8E6F0;
  --border-strong: #D9D6E8;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 8px rgba(91,75,231,.05), 0 8px 24px rgba(91,75,231,.06);
  --shadow-hover: 0 4px 16px rgba(91,75,231,.10), 0 20px 48px rgba(91,75,231,.14);
  --gradient-brand: linear-gradient(135deg, #5B4BE7 0%, #8B5CF6 100%);
  --gradient-gold: linear-gradient(135deg, #F5B840 0%, #FF8C42 100%);
  --gradient-hero: linear-gradient(135deg, rgba(31,29,51,.90) 0%, rgba(91,75,231,.65) 100%);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: hidden; }

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

a { color: var(--secondary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--secondary-dark); }

img { max-width: 100%; height: auto; }
button, input, select, textarea { font-family: inherit; }

.container { max-width: 1200px; }

/* ===== Buttons ===== */
.btn {
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  line-height: 1;
  transition: all .25s ease;
}
.btn:focus { box-shadow: 0 0 0 4px rgba(91,75,231,.15); outline: none; }

.btn-gold {
  background: var(--gradient-gold);
  color: #2B2440;
  box-shadow: 0 8px 20px rgba(245,184,64,.28);
}
.btn-gold:hover {
  color: #2B2440;
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(245,184,64,.38);
  filter: brightness(1.04);
}
.btn-gold:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(245,184,64,.3); }

.btn-primary-brand {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 8px 20px rgba(91,75,231,.28);
}
.btn-primary-brand:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(91,75,231,.35);
}
.btn-primary-brand:active { transform: translateY(0); }

.btn-ghost-white {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,.7);
}
.btn-ghost-white:hover {
  background: rgba(255,255,255,.12);
  color: #fff;
  border-color: #fff;
}
.btn-ghost-white:active { transform: translateY(0); }

.btn-block { width: 100%; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 72px;
  background: rgba(255,255,255,.98);
  z-index: 1050;
  transition: box-shadow .3s ease, background .3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 16px rgba(91,75,231,.08);
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-title);
  letter-spacing: .01em;
  flex-shrink: 0;
}
.brand-logo:hover { color: var(--text-title); }

.logo-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--gradient-brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(91,75,231,.28);
}
.logo-text { font-size: 18px; font-weight: 800; white-space: nowrap; }

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.desktop-nav .nav-link {
  position: relative;
  color: var(--text-body);
  font-size: 15px;
  font-weight: 600;
  padding: 24px 0 20px;
  transition: color .25s ease;
}
.desktop-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 3px;
  border-radius: 4px;
  background: var(--gradient-brand);
  transition: width .25s ease;
}
.desktop-nav .nav-link:hover { color: var(--text-title); }
.desktop-nav .nav-link:hover::after { width: 100%; }
.desktop-nav .nav-link.active { color: var(--text-title); }
.desktop-nav .nav-link.active::after { width: 100%; }

.header-cta { min-width: 104px; height: 42px; padding: 0 22px; font-size: 14px; }

.navbar-toggler-custom {
  display: none;
  width: 44px; height: 44px;
  border: none;
  background: transparent;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  border-radius: 10px;
  transition: background .2s;
}
.navbar-toggler-custom:hover { background: rgba(91,75,231,.06); }
.navbar-toggler-custom:focus { outline: none; box-shadow: 0 0 0 4px rgba(91,75,231,.12); }
.navbar-toggler-custom .bar {
  width: 22px; height: 2px;
  background: var(--text-title);
  border-radius: 2px;
  transition: all .3s ease;
}
.navbar-toggler-custom.open .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-toggler-custom.open .bar:nth-child(2) { opacity: 0; }
.navbar-toggler-custom.open .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Mobile Menu ===== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: linear-gradient(160deg, #1F1D33 0%, #3B2E63 100%);
  z-index: 1040;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility .35s ease;
}
.mobile-menu.open { opacity: 1; visibility: visible; }

.mobile-nav-link {
  color: #fff;
  font-size: 18px;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 12px;
  transition: background .25s ease, color .25s ease;
}
.mobile-nav-link:hover { color: var(--gold); background: rgba(255,255,255,.06); }
.mobile-nav-link.active { color: var(--gold); }
.mobile-cta { margin-top: 16px; min-width: 160px; }

body.menu-open { overflow: hidden; }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 160px 0 80px;
  background: var(--gradient-hero), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  min-height: 460px;
  display: flex;
  align-items: center;
}
.page-hero::after {
  content: '';
  position: absolute;
  right: -120px; bottom: -160px;
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(245,184,64,.18) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,.9);
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero-badge i { color: var(--gold); }

.page-hero h1 {
  font-size: clamp(2.125rem, 4.2vw, 3.25rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: #fff;
  margin: 0 0 16px;
}

.hero-subtitle {
  font-size: 17px;
  color: rgba(255,255,255,.78);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; }

/* ===== Section base ===== */
.site-section { padding: 88px 0; }
.section-head { margin-bottom: 52px; }
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(91,75,231,.08);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
  letter-spacing: .02em;
}
.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2.375rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-title);
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}
.section-head .section-bar {
  width: 40px; height: 4px;
  border-radius: 4px;
  background: var(--gradient-brand);
  margin-bottom: 16px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0;
  line-height: 1.75;
}
.section-head.center { text-align: center; }
.section-head.center .section-bar { margin-left: auto; margin-right: auto; }
.section-head.center p { margin-left: auto; margin-right: auto; }

/* ===== Overview ===== */
.section-overview { background: var(--bg-warm); }

.overview-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  height: 100%;
  min-height: 340px;
  object-fit: cover;
  width: 100%;
  transition: transform .5s ease;
}
.overview-media-wrap { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.overview-media-wrap:hover .overview-media { transform: scale(1.03); }

.overview-content { padding: 24px 0 24px 32px; }
.overview-content h2 { margin-bottom: 20px; }
.overview-content p { font-size: 16px; line-height: 1.8; color: var(--text-body); margin-bottom: 16px; }

.check-list { list-style: none; padding: 0; margin: 20px 0 0; }
.check-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 14px;
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
}
.check-list li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0; top: 2px;
  width: 20px; height: 20px;
  background: rgba(20,199,177,.12);
  color: var(--secondary-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

/* ===== Features ===== */
.section-features { background: #fff; }

.feature-main-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  height: 100%;
  border: 1px solid var(--border-color);
  transition: box-shadow .3s ease, transform .3s ease;
}
.feature-main-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }

.feature-main-media { overflow: hidden; height: 220px; }
.feature-main-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.feature-main-card:hover .feature-main-media img { transform: scale(1.04); }

.feature-main-body { padding: 28px; }
.feature-main-body h3 { font-size: 20px; font-weight: 800; color: var(--text-title); margin-bottom: 12px; }
.feature-main-body p { font-size: 15px; line-height: 1.75; color: var(--text-muted); margin: 0; }

.feature-sub-card {
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  padding: 28px;
  transition: box-shadow .3s ease, transform .3s ease;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.feature-sub-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }

.feature-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  background: var(--gradient-brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 6px 16px rgba(91,75,231,.24);
}
.feature-sub-card h4 { font-size: 17px; font-weight: 700; color: var(--text-title); margin: 0 0 6px; }
.feature-sub-card p { font-size: 14px; line-height: 1.7; color: var(--text-muted); margin: 0; }

.feature-stack { display: flex; flex-direction: column; gap: 24px; height: 100%; }

/* ===== Scenarios ===== */
.section-scenarios { background: var(--bg-warm); }

.scenario-card {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 28px;
  height: 100%;
  display: flex;
  gap: 20px;
  transition: box-shadow .3s ease, transform .3s ease;
}
.scenario-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }

.scenario-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(20,199,177,.1);
  color: var(--secondary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.scenario-body h4 { font-size: 16px; font-weight: 700; color: var(--text-title); margin: 0 0 8px; }
.scenario-body p { font-size: 14px; line-height: 1.7; color: var(--text-muted); margin: 0; }

/* ===== Stats ===== */
.section-stats {
  background: var(--dark-night);
  position: relative;
  overflow: hidden;
}
.section-stats::before {
  content: '';
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(245,184,64,.35), transparent);
}
.section-stats .section-head h2 { color: #fff; }
.section-stats .section-head p { color: rgba(255,255,255,.65); }

.stat-item {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: background .3s ease, transform .3s ease;
  height: 100%;
}
.stat-item:hover { background: rgba(255,255,255,.08); transform: translateY(-4px); }

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--gold);
  line-height: 1.2;
  display: block;
  margin-bottom: 8px;
}
.stat-label { font-size: 14px; color: rgba(255,255,255,.65); }

/* ===== Flow ===== */
.section-flow { background: #fff; }

.flow-timeline {
  position: relative;
  padding: 20px 0;
}
.flow-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 1px;
  background: #E0DCF0;
  transform: translateX(-50%);
}

.flow-item {
  position: relative;
  width: 50%;
  padding: 0 48px 48px 0;
}
.flow-item:nth-child(even) {
  margin-left: 50%;
  padding: 0 0 48px 48px;
}
.flow-item:last-child { padding-bottom: 0; }

.flow-node {
  position: absolute;
  top: 6px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(91,75,231,.35);
  z-index: 2;
}
.flow-item:nth-child(odd) .flow-node { right: -14px; }
.flow-item:nth-child(even) .flow-node { left: -14px; }

.flow-card {
  background: var(--bg-warm);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 24px;
  transition: box-shadow .3s ease, transform .3s ease;
}
.flow-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }

.flow-year {
  font-size: 13px;
  font-weight: 700;
  color: var(--gold-deep);
  letter-spacing: .02em;
  display: block;
  margin-bottom: 6px;
}
.flow-card h4 { font-size: 16px; font-weight: 700; color: var(--text-title); margin: 0 0 8px; }
.flow-card p { font-size: 14px; line-height: 1.7; color: var(--text-muted); margin: 0; }

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

.faq-item {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px rgba(91,75,231,.08), var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
}
.faq-question h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-title);
  margin: 0;
  line-height: 1.5;
  flex: 1;
}
.faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(91,75,231,.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform .3s ease, background .3s ease;
}
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--gradient-brand); color: #fff; }

.faq-answer {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted);
  display: none;
}
.faq-item.active .faq-answer { display: block; }

/* ===== CTA ===== */
.section-cta {
  background: linear-gradient(120deg, #5B4BE7 0%, #7A5AF8 60%, #A78BFA 100%);
  position: relative;
  padding: 88px 0;
  overflow: hidden;
}
.section-cta::before {
  content: '';
  position: absolute;
  right: -60px; top: -60px;
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(255,255,255,.16) 0%, transparent 70%);
  border-radius: 50%;
}
.section-cta::after {
  content: '';
  position: absolute;
  left: -40px; bottom: -80px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(245,184,64,.18) 0%, transparent 70%);
  border-radius: 50%;
}
.section-cta .container { position: relative; z-index: 2; }

.cta-heading { text-align: center; margin-bottom: 40px; }
.cta-heading h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.375rem); font-weight: 800; margin-bottom: 12px; }
.cta-heading p { color: rgba(255,255,255,.78); font-size: 16px; margin: 0; }

.cta-form-card {
  background: #fff;
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 20px 48px rgba(31,29,51,.28);
  max-width: 720px;
  margin: 0 auto;
}

.cta-form-card label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 8px;
  display: block;
}

.cta-form-card .form-control,
.cta-form-card .form-select {
  height: 48px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text-title);
  background: #fff;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.cta-form-card .form-control:focus,
.cta-form-card .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(91,75,231,.12);
}
.cta-form-card .form-control::placeholder { color: #B4B2C8; }

/* ===== Footer ===== */
.site-footer { background: var(--dark-night); color: rgba(255,255,255,.7); }
.footer-top { padding: 64px 0 40px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,.45);
  flex-wrap: wrap;
}

.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .logo-icon { width: 36px; height: 36px; font-size: 15px; }
.footer-brand .logo-text { color: #fff; font-size: 19px; font-weight: 800; }
.footer-desc { font-size: 14px; line-height: 1.75; color: rgba(255,255,255,.55); margin-bottom: 20px; max-width: 320px; }

.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.18);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.7);
  font-size: 16px;
  transition: background .3s ease, color .3s ease, border-color .3s ease;
}
.footer-social a:hover {
  background: var(--gradient-brand);
  color: #fff;
  border-color: transparent;
}

.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: rgba(255,255,255,.55);
  font-size: 14px;
  transition: color .25s ease;
}
.footer-links a:hover { color: var(--gold); text-decoration: none; }

.footer-contact { list-style: none; padding: 0; margin: 0; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,.55);
  margin-bottom: 12px;
  line-height: 1.6;
}
.footer-contact i { color: var(--gold); width: 18px; text-align: center; flex-shrink: 0; }

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .desktop-nav { display: none; }
  .header-cta { display: none; }
  .navbar-toggler-custom { display: flex; }
  .site-section { padding: 64px 0; }
  .overview-content { padding: 20px 0 0; }
  .flow-timeline::before { left: 14px; }
  .flow-item, .flow-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    padding: 0 0 36px 44px;
  }
  .flow-item:nth-child(odd) .flow-node,
  .flow-item:nth-child(even) .flow-node { left: 0; right: auto; }
  .page-hero { min-height: 400px; padding: 130px 0 56px; }
}

@media (max-width: 767.98px) {
  .site-section { padding: 48px 0; }
  .section-head { margin-bottom: 32px; }
  .feature-stack { gap: 20px; }
  .scenario-card { flex-direction: column; gap: 14px; }
  .stat-item { padding: 24px 16px; }
  .cta-form-card { padding: 20px; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; }
  .overview-media-wrap { min-height: 260px; }
  .footer-bottom { flex-direction: column; gap: 6px; }
  .page-hero h1 { font-size: 1.9rem; }
}

/* roulang page: category2 */
:root {
  --violet: #5B4BE7;
  --violet-light: #A78BFA;
  --violet-soft: #F0EEFC;
  --teal: #14C7B1;
  --teal-dark: #0FA795;
  --gold: #F5B840;
  --gold-deep: #FF8C42;
  --bg: #FAF9F6;
  --white: #FFFFFF;
  --ink: #242246;
  --body-text: #4A4965;
  --muted-text: #8A89A3;
  --border: #E8E6F0;
  --dark: #1F1D33;
  --dark-2: #3B2E63;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 2px 8px rgba(91,75,231,.05), 0 8px 24px rgba(91,75,231,.06);
  --shadow-hover: 0 4px 16px rgba(91,75,231,.10), 0 20px 48px rgba(91,75,231,.14);
  --shadow-gold: 0 8px 20px rgba(245,184,64,.35);
  --transition: .25s ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
  background: var(--bg);
  color: var(--body-text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--teal); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--teal-dark); }
img { max-width: 100%; display: block; }
h1, h2, h3, h4, h5, h6 { color: var(--ink); font-weight: 800; line-height: 1.3; margin: 0 0 .5rem; }
.container { max-width: 1200px; }
.section { padding: 80px 0; position: relative; }
.section-alt { background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  height: 72px;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid rgba(232,230,240,.7);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(31,29,51,.06);
  border-bottom-color: transparent;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; color: var(--ink); }
.brand-logo:hover { color: var(--ink); }
.logo-icon {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--violet), var(--violet-light));
  color: #fff; font-size: 16px;
  border-radius: 11px;
  box-shadow: 0 4px 12px rgba(91,75,231,.28);
  flex-shrink: 0;
}
.logo-text { font-size: 20px; letter-spacing: .01em; white-space: nowrap; }
.desktop-nav { display: flex; align-items: center; gap: 6px; }
.desktop-nav .nav-link {
  position: relative;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--body-text);
  border-radius: 10px;
  transition: color .2s ease, background .2s ease;
}
.desktop-nav .nav-link:hover { color: var(--violet); background: var(--violet-soft); }
.desktop-nav .nav-link.active { color: var(--violet); }
.desktop-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 2px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--violet), var(--violet-light));
}
.btn { border-radius: 14px; font-weight: 700; height: 48px; padding: 0 32px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: none; transition: all .25s ease; font-size: 15px; }
.btn:focus { box-shadow: 0 0 0 4px rgba(91,75,231,.15); }
.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-deep));
  color: #2B2440;
  box-shadow: var(--shadow-gold);
}
.btn-gold:hover { color: #2B2440; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(245,184,64,.42); }
.btn-gold:active { transform: translateY(0); }
.btn-primary {
  background: linear-gradient(135deg, var(--violet), #8B5CF6);
  color: #fff;
  box-shadow: 0 8px 20px rgba(91,75,231,.28);
}
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(91,75,231,.36); }
.btn-ghost-light {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,.65);
}
.btn-ghost-light:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,.12); transform: translateY(-2px); }
.header-cta { height: 42px; padding: 0 24px; font-size: 14px; }
.navbar-toggler-custom {
  display: none;
  background: none; border: none; padding: 8px;
  flex-direction: column; gap: 5px;
  cursor: pointer;
}
.navbar-toggler-custom .bar { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: all .3s ease; }
.navbar-toggler-custom.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-toggler-custom.active .bar:nth-child(2) { opacity: 0; }
.navbar-toggler-custom.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Mobile Menu ===== */
.mobile-menu {
  position: fixed; inset: 0; z-index: 1040;
  background: linear-gradient(160deg, #1F1D33 0%, #3B2E63 100%);
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  gap: 8px;
  opacity: 0; visibility: hidden;
  transform: translateY(-12px);
  transition: opacity .35s ease, transform .35s ease, visibility .35s ease;
}
.mobile-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }
.mobile-menu .mobile-link {
  color: #fff; font-size: 20px; font-weight: 600;
  padding: 14px 24px; border-radius: 14px;
  transition: background .2s ease, color .2s ease;
}
.mobile-menu .mobile-link:hover { background: rgba(255,255,255,.1); color: var(--gold); }
.mobile-menu .mobile-link.active { color: var(--gold); }
.mobile-menu .mobile-contact { margin-top: 24px; color: rgba(255,255,255,.6); font-size: 14px; }
.mobile-menu .btn { margin-top: 16px; min-width: 200px; }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 180px 0 120px;
  background: linear-gradient(135deg, #1F1D33 0%, #3B2E63 55%, #5B4BE7 100%);
  overflow: hidden;
  color: #fff;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover; background-position: center;
  opacity: .22;
  mix-blend-mode: screen;
}
.page-hero::after {
  content: "";
  position: absolute;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: rgba(167,139,250,.2);
  filter: blur(90px);
  top: -120px; right: -80px;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 760px; }
.hero-overline {
  display: inline-block;
  font-size: 14px; font-weight: 600;
  letter-spacing: .1em;
  color: var(--gold);
  background: rgba(245,184,64,.14);
  border: 1px solid rgba(245,184,64,.3);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 20px;
}
.hero-content h1 {
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.25;
  letter-spacing: -.01em;
  margin-bottom: 18px;
}
.hero-lead {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255,255,255,.8);
  max-width: 620px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

/* ===== Section Head ===== */
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head .section-tag {
  display: inline-block;
  font-size: 13px; font-weight: 700;
  color: var(--violet);
  background: var(--violet-soft);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 14px;
  letter-spacing: .02em;
}
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2.375rem); font-weight: 800; margin-bottom: 12px; }
.section-rule { width: 40px; height: 4px; border-radius: 4px; background: linear-gradient(90deg, var(--violet), var(--teal)); margin-bottom: 16px; }
.section-head p { color: var(--muted-text); font-size: 16px; margin-bottom: 0; }

/* ===== Spotlight Card ===== */
.spotlight-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  height: 100%;
  transition: box-shadow .3s ease, transform .3s ease;
}
.spotlight-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.spotlight-img { overflow: hidden; }
.spotlight-img img { width: 100%; height: 260px; object-fit: cover; transition: transform .5s ease; }
.spotlight-card:hover .spotlight-img img { transform: scale(1.03); }
.spotlight-body { padding: 30px; }
.spotlight-body .badge-soft {
  display: inline-block;
  background: rgba(20,199,177,.12);
  color: var(--teal-dark);
  font-size: 13px; font-weight: 700;
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 14px;
}
.spotlight-body h3 { font-size: 1.35rem; font-weight: 800; margin-bottom: 10px; }
.spotlight-body p { color: var(--muted-text); font-size: 15px; line-height: 1.7; margin-bottom: 0; }

.side-card {
  display: flex; gap: 18px; align-items: flex-start;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 26px 24px;
  transition: box-shadow .3s ease, transform .3s ease;
}
.side-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.side-card + .side-card { margin-top: 24px; }
.side-icon {
  width: 52px; height: 52px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--violet), var(--violet-light));
  color: #fff; font-size: 18px;
  border-radius: var(--radius-sm);
  box-shadow: 0 6px 16px rgba(91,75,231,.22);
}
.side-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.side-card p { font-size: 14px; color: var(--muted-text); margin-bottom: 0; }

/* ===== Topic Grid ===== */
.topic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.topic-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 30px;
  transition: box-shadow .3s ease, transform .3s ease, border-color .3s ease;
}
.topic-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: rgba(91,75,231,.25); }
.topic-card .topic-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #14C7B1, #0FA795);
  color: #fff; font-size: 17px;
  margin-bottom: 18px;
}
.topic-card:nth-child(2) .topic-icon { background: linear-gradient(135deg, var(--violet), var(--violet-light)); }
.topic-card:nth-child(3) .topic-icon { background: linear-gradient(135deg, var(--gold), var(--gold-deep)); }
.topic-card:nth-child(4) .topic-icon { background: linear-gradient(135deg, #8B5CF6, #EC4899); }
.topic-card h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 8px; }
.topic-card p { font-size: 14px; color: var(--muted-text); line-height: 1.7; margin-bottom: 16px; }
.topic-card .topic-link { font-size: 14px; font-weight: 700; color: var(--violet); }
.topic-card .topic-link i { transition: transform .2s ease; }
.topic-card .topic-link:hover i { transform: translateX(4px); }

/* ===== Scene ===== */
.scene-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.scene-card {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow .3s ease, transform .3s ease;
}
.scene-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.scene-card .scene-img { overflow: hidden; }
.scene-card .scene-img img { width: 100%; height: 180px; object-fit: cover; transition: transform .5s ease; }
.scene-card:hover .scene-img img { transform: scale(1.04); }
.scene-body { padding: 26px; }
.scene-body h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 8px; }
.scene-body p { font-size: 14px; color: var(--muted-text); line-height: 1.7; margin-bottom: 0; }

/* ===== Stats ===== */
.stats-section {
  background: linear-gradient(135deg, #1F1D33 0%, #3B2E63 100%);
  position: relative;
  overflow: hidden;
}
.stats-section::after {
  content: "";
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(245,184,64,.12);
  filter: blur(70px);
  bottom: -100px; left: 10%;
  pointer-events: none;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; z-index: 2; }
.stat-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 20px;
  padding: 32px 20px;
  text-align: center;
  transition: background .3s ease, transform .3s ease;
}
.stat-card:hover { background: rgba(255,255,255,.1); transform: translateY(-4px); }
.stat-card .stat-number { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; color: var(--gold); line-height: 1.2; }
.stat-card .stat-label { font-size: 14px; color: rgba(255,255,255,.7); margin-top: 8px; }

/* ===== Timeline ===== */
.steps-timeline { position: relative; max-width: 860px; margin: 0 auto; }
.steps-timeline::before {
  content: "";
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--violet-light), var(--teal));
  transform: translateX(-50%);
}
.step-item { position: relative; display: flex; padding: 24px 0; }
.step-item:nth-child(odd) { justify-content: flex-start; }
.step-item:nth-child(even) { justify-content: flex-end; }
.step-dot {
  position: absolute;
  left: 50%; top: 36px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--violet), var(--violet-light));
  border: 4px solid var(--bg);
  transform: translateX(-50%);
  z-index: 2;
  box-shadow: 0 0 0 3px rgba(91,75,231,.18);
}
.step-card {
  width: calc(42% - 24px);
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 26px;
  transition: box-shadow .3s ease, transform .3s ease;
}
.step-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.step-card .step-num {
  font-size: 13px; font-weight: 700;
  color: var(--gold-deep);
  letter-spacing: .05em;
  margin-bottom: 6px;
  text-transform: uppercase;
}
.step-card .step-num i { margin-right: 5px; }
.step-card h3 { font-size: 1.1rem; font-weight: 800; margin-bottom: 6px; }
.step-card p { font-size: 14px; color: var(--muted-text); line-height: 1.7; margin-bottom: 0; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.accordion-item {
  background: var(--white);
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-md) !important;
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color .25s ease, box-shadow .25s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(91,75,231,.35) !important;
  box-shadow: 0 4px 16px rgba(91,75,231,.08);
}
.accordion-button {
  font-size: 16px; font-weight: 600;
  color: var(--ink);
  background: var(--white);
  padding: 20px 24px;
  box-shadow: none !important;
  border-radius: var(--radius-md) !important;
}
.accordion-button::after {
  background-image: none;
  content: "\f067";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 15px;
  color: var(--violet);
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--violet-soft);
  border-radius: 50%;
  transition: transform .3s ease;
}
.accordion-button:not(.collapsed)::after {
  content: "\f068";
  transform: rotate(0deg);
  background: var(--violet);
  color: #fff;
}
.accordion-button:not(.collapsed) { color: var(--violet); background: var(--white); }
.accordion-button:focus-visible { outline: 3px solid rgba(91,75,231,.25); }
.accordion-body { padding: 0 24px 20px; color: var(--muted-text); font-size: 15px; line-height: 1.75; }

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(120deg, #5B4BE7 0%, #7A5AF8 55%, #A78BFA 100%);
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover; background-position: center;
  opacity: .12;
}
.cta-content { position: relative; z-index: 2; text-align: center; margin-bottom: 40px; }
.cta-content h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; }
.cta-content p { color: rgba(255,255,255,.8); font-size: 16px; max-width: 560px; margin: 12px auto 0; }
.cta-form-card {
  position: relative; z-index: 2;
  background: var(--white);
  border-radius: 20px;
  padding: 36px;
  max-width: 720px;
  margin: 0 auto;
  box-shadow: 0 24px 60px rgba(31,29,51,.18);
}
.cta-form-card .form-label { font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.cta-form-card .form-control, .cta-form-card .form-select {
  height: 48px;
  border-radius: var(--radius-sm);
  border: 1px solid #D9D6E8;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--body-text);
  background: #fff;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.cta-form-card .form-control::placeholder { color: #B4B2C8; }
.cta-form-card .form-control:focus, .cta-form-card .form-select:focus {
  border-color: var(--violet);
  box-shadow: 0 0 0 4px rgba(91,75,231,.12);
  outline: none;
}
.cta-form-card .form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238A89A3' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}
.cta-form-card .btn-submit { width: 100%; margin-top: 8px; }
.form-status { margin-top: 14px; font-size: 14px; display: none; padding: 10px 16px; border-radius: 10px; text-align: center; }
.form-status.success { display: block; background: rgba(20,199,177,.12); color: var(--teal-dark); }
.form-status.error { display: block; background: rgba(229,72,77,.1); color: #E5484D; }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: rgba(255,255,255,.7); padding-top: 60px; }
.site-footer .footer-top { padding-bottom: 40px; }
.site-footer .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.site-footer .footer-brand .logo-icon {
  width: 36px; height: 36px;
  font-size: 15px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--violet), var(--violet-light));
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
}
.site-footer .footer-brand .logo-text { font-size: 19px; font-weight: 900; color: #fff; }
.site-footer .footer-desc { font-size: 14px; line-height: 1.75; color: rgba(255,255,255,.55); margin-bottom: 20px; max-width: 300px; }
.site-footer .footer-social { display: flex; gap: 10px; }
.site-footer .footer-social a {
  width: 40px; height: 40px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.7);
  font-size: 15px;
  transition: all .3s ease;
}
.site-footer .footer-social a:hover { background: linear-gradient(135deg, var(--violet), var(--violet-light)); border-color: transparent; color: #fff; transform: translateY(-2px); }
.site-footer .footer-title { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.site-footer .footer-links, .site-footer .footer-contact { list-style: none; margin: 0; padding: 0; }
.site-footer .footer-links li + li { margin-top: 10px; }
.site-footer .footer-links a { color: rgba(255,255,255,.55); font-size: 14px; transition: color .2s ease, padding-left .2s ease; }
.site-footer .footer-links a:hover { color: var(--gold); padding-left: 4px; }
.site-footer .footer-contact li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,.55); margin-bottom: 12px; }
.site-footer .footer-contact i { color: var(--gold); width: 18px; text-align: center; }
.site-footer .footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
}
.site-footer .footer-bottom .container { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; font-size: 13px; color: rgba(255,255,255,.45); }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .desktop-nav { display: none; }
  .header-cta { display: none; }
  .navbar-toggler-custom { display: inline-flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero { padding: 150px 0 80px; }
  .steps-timeline::before { left: 20px; }
  .step-item { justify-content: flex-start !important; padding-left: 60px; }
  .step-dot { left: 20px; transform: translateX(-50%); }
  .step-card { width: 100%; }
  .spotlight-img img { height: 220px; }
}
@media (max-width: 768px) {
  .section { padding: 52px 0; }
  .topic-grid { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .stat-card { padding: 24px 16px; }
  .cta-form-card { padding: 24px 20px; }
  .hero-content h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .section-head { margin-bottom: 32px; }
  .spotlight-body { padding: 24px; }
  .side-card { padding: 20px; }
}

@media (max-width: 520px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .logo-text { font-size: 17px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-number { font-size: 1.8rem; }
  .btn-submit { height: 44px; }
}