/* roulang page: index */
:root {
  --color-bg-primary: #070D1F;
  --color-bg-secondary: #0C1530;
  --color-accent-blue: #2563EB;
  --color-accent-cyan: #22D3EE;
  --color-accent-gold: #D4AF37;
  --color-text-primary: #F1F5F9;
  --color-text-secondary: #94A3B8;
  --glass-bg: rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.12);
  --glow-gold: 0 0 24px rgba(212,175,55,0.40);
  --glow-cyan: 0 0 24px rgba(34,211,238,0.35);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--color-bg-primary);
  color:var(--color-text-primary);
  line-height:1.65;
  overflow-x:hidden;
  font-size:16px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease;}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
.container{width:100%;max-width:1240px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;}
@media (max-width:768px){.container{padding-left:18px;padding-right:18px;}}
.section{padding:110px 0;}
@media (max-width:768px){.section{padding:56px 0;}}
.bg-glow{position:fixed;width:600px;height:600px;border-radius:50%;pointer-events:none;z-index:0;filter:blur(120px);opacity:.18;}
.bg-glow-cyan{background:rgba(34,211,238,.45);top:-120px;left:-80px;animation:floatA 12s ease-in-out infinite;}
.bg-glow-gold{background:rgba(212,175,55,.35);bottom:-160px;right:-100px;animation:floatB 14s ease-in-out infinite;}
@keyframes floatA{0%,100%{transform:translate(0,0)}50%{transform:translate(-30px,40px)}}
@keyframes floatB{0%,100%{transform:translate(0,0)}50%{transform:translate(24px,-30px)}}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:64px;background:rgba(7,13,31,.78);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.07);transition:box-shadow .35s ease,background .35s ease;}
.site-header.scrolled{background:rgba(7,13,31,.92);box-shadow:0 8px 32px rgba(0,0,0,.45);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:24px;position:relative;z-index:2;}
.logo{font-size:22px;font-weight:800;letter-spacing:.4px;color:var(--color-text-primary);white-space:nowrap;line-height:1;}
.logo span{color:var(--color-accent-gold);font-weight:700;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px;}
.main-nav .nav-link{display:inline-block;padding:8px 16px;border-radius:30px;font-size:15px;color:var(--color-text-secondary);transition:color .25s,background .25s;font-weight:500;}
.main-nav .nav-link:hover{color:var(--color-text-primary);background:rgba(255,255,255,.05);}
.main-nav .nav-link.active{color:var(--color-accent-gold);background:rgba(212,175,55,.12);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn-icon{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid rgba(255,255,255,.15);color:var(--color-text-secondary);transition:all .25s;}
.btn-icon:hover{color:var(--color-accent-cyan);border-color:var(--color-accent-cyan);box-shadow:var(--glow-cyan);}
.menu-toggle{display:none;width:38px;height:38px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:50%;border:1px solid rgba(255,255,255,.15);}
.menu-toggle span{display:block;width:16px;height:2px;background:var(--color-text-primary);border-radius:2px;transition:all .3s;}
.menu-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
.menu-toggle.open span:nth-child(2){opacity:0;}
.menu-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}
.mobile-menu{position:fixed;top:64px;left:0;right:0;background:rgba(7,13,31,.96);backdrop-filter:blur(24px);padding:20px 24px 28px;display:none;z-index:999;border-bottom:1px solid rgba(212,175,55,.15);}
.mobile-menu.open{display:block;animation:fadeIn .3s ease;}
.mobile-menu a{display:block;padding:14px 10px;font-size:17px;font-weight:500;color:var(--color-text-primary);border-bottom:1px solid rgba(255,255,255,.06);transition:color .25s,padding-left .25s;}
.mobile-menu a:hover{color:var(--color-accent-gold);padding-left:16px;}
.mobile-menu a.active{color:var(--color-accent-gold);}
@keyframes fadeIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}
@media (max-width:900px){
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .btn-icon{display:none;}
}

/* Buttons */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:40px;background:linear-gradient(135deg,#D4AF37,#B8860B);color:#0B1120;font-weight:700;font-size:15px;padding:13px 30px;box-shadow:0 0 20px rgba(212,175,55,.38);transition:all .3s ease;border:1px solid rgba(255,255,255,.15);white-space:nowrap;line-height:1;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 32px rgba(212,175,55,.55);filter:brightness(1.08);}
.btn-primary:active{transform:scale(.98);}
.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:40px;background:transparent;border:1px solid rgba(255,255,255,.35);color:var(--color-text-primary);font-weight:600;font-size:15px;padding:13px 30px;transition:all .3s ease;white-space:nowrap;line-height:1;}
.btn-outline:hover{border-color:var(--color-accent-cyan);color:var(--color-accent-cyan);background:rgba(34,211,238,.07);box-shadow:0 0 18px rgba(34,211,238,.18);transform:translateY(-2px);}
.btn-outline:active{transform:scale(.98);}
.btn-lg{padding:17px 42px;font-size:16px;}
.btn-sm{padding:9px 20px;font-size:14px;}
.btn-block{width:100%;}

/* Hero */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:90px;padding-bottom:60px;position:relative;background:radial-gradient(ellipse at 15% 25%,rgba(34,211,238,.05),transparent 55%),radial-gradient(ellipse at 85% 80%,rgba(212,175,55,.05),transparent 50%);z-index:1;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center;}
.hero-content{max-width:560px;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:30px;background:rgba(212,175,55,.12);border:1px solid rgba(212,175,55,.3);color:var(--color-accent-gold);font-size:13px;font-weight:600;letter-spacing:.5px;margin-bottom:20px;}
.hero-badge::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--color-accent-gold);box-shadow:0 0 8px rgba(212,175,55,.8);}
.hero h1{font-size:52px;font-weight:800;line-height:1.2;margin-bottom:18px;letter-spacing:1px;color:var(--color-text-primary);}
.hero h1 em{font-style:normal;color:var(--color-accent-gold);}
.hero-sub{font-size:17px;color:var(--color-text-secondary);line-height:1.8;margin-bottom:32px;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:42px;}
.hero-stats{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.08);padding-top:28px;max-width:460px;}
.stat-item{flex:1;min-width:90px;padding-right:8px;}
.stat-item strong{display:block;font-size:26px;font-weight:800;color:var(--color-text-primary);line-height:1.2;}
.stat-item span{font-size:13px;color:var(--color-text-secondary);display:block;margin-top:4px;}

.hero-visual{position:relative;}
.arch-frame{position:relative;border-radius:220px 220px 28px 28px;overflow:hidden;border:1px solid rgba(255,255,255,.18);box-shadow:var(--glow-gold);aspect-ratio:4 / 5;max-height:620px;}
.arch-frame img{width:100%;height:100%;object-fit:cover;}
.arch-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(7,13,31,.5) 0,rgba(7,13,31,.08) 45%,rgba(7,13,31,.16) 100%);}
.arch-glow{position:absolute;top:-20px;right:-20px;width:120px;height:120px;border-radius:50%;background:rgba(212,175,55,.25);filter:blur(60px);pointer-events:none;}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-content{max-width:100%;}
  .hero h1{font-size:38px;}
  .arch-frame{width:100%;max-width:520px;margin:0 auto;aspect-ratio:4/4.5;}
  .hero{padding-top:120px;}
}
@media (max-width:640px){
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15px;}
  .stat-item strong{font-size:21px;}
  .hero-actions .btn-primary,.hero-actions .btn-outline{width:100%;}
  .arch-frame{border-radius:140px 140px 20px 20px;aspect-ratio:4/4;}
}

/* Trust Bar */
.trust-bar{border-top:1px solid rgba(255,255,255,.07);border-bottom:1px solid rgba(255,255,255,.07);background:rgba(12,21,48,.6);padding:24px 0;position:relative;z-index:1;}
.trust-items{display:flex;justify-content:center;flex-wrap:wrap;gap:16px 40px;align-items:center;}
.trust-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--color-text-secondary);}
.trust-item svg{width:20px;height:20px;color:var(--color-accent-gold);flex-shrink:0;}
@media (max-width:768px){.trust-items{gap:10px 18px;}.trust-item{font-size:13px;}}

/* Section head */
.section-head{text-align:center;margin-bottom:56px;}
.section-tag{display:inline-block;padding:5px 14px;border-radius:20px;background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.28);color:var(--color-accent-cyan);font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:16px;}
.section-head h2{font-size:34px;font-weight:800;letter-spacing:.5px;color:var(--color-text-primary);margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--color-text-secondary);max-width:640px;margin:0 auto;line-height:1.7;}
@media (max-width:768px){.section-head{margin-bottom:36px;}.section-head h2{font-size:24px;}}

/* News CMS */
.news-section{background:var(--color-bg-secondary);position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.03);border-bottom:1px solid rgba(255,255,255,.03);}
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:1080px;margin:0 auto;}
@media (max-width:768px){.news-grid{grid-template-columns:1fr;}}
.news-card{display:flex;gap:20px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:18px;padding:20px;transition:transform .3s,border-color .3s,box-shadow .3s;backdrop-filter:blur(12px);overflow:hidden;}
.news-card:hover{transform:translateY(-4px);border-color:rgba(212,175,55,.4);box-shadow:0 8px 30px rgba(0,0,0,.2),0 0 18px rgba(212,175,55,.08);}
.news-thumb{width:88px;height:88px;border-radius:12px;flex-shrink:0;background-size:cover;background-position:center;}
.news-info{flex:1;min-width:0;display:flex;flex-direction:column;}
.news-category{display:inline-block;align-self:flex-start;padding:3px 10px;border-radius:16px;background:rgba(212,175,55,.15);border:1px solid rgba(212,175,55,.3);color:var(--color-accent-gold);font-size:12px;font-weight:600;margin-bottom:6px;max-width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.news-title{font-size:17px;font-weight:700;line-height:1.4;margin-bottom:5px;color:var(--color-text-primary);transition:color .25s;}
.news-title a:hover{color:var(--color-accent-gold);}
.news-excerpt{font-size:13px;color:var(--color-text-secondary);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px;flex:1;}
.news-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--color-text-secondary);}
.news-meta a{color:var(--color-accent-cyan);font-weight:600;font-size:13px;transition:color .25s;}
.news-meta a:hover{color:var(--color-text-primary);}
@media (max-width:640px){.news-thumb{width:72px;height:72px;}.news-title{font-size:15px;}}

/* Empty state */
.empty-state{text-align:center;padding:70px 20px;background:var(--glass-bg);border:1px dashed rgba(255,255,255,.14);border-radius:20px;max-width:560px;margin:0 auto;}
.empty-icon{font-size:46px;display:block;margin-bottom:14px;opacity:.7;}
.empty-state p{color:var(--color-text-secondary);font-size:15px;}

/* Feature list */
.features{position:relative;z-index:1;}
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:26px;max-width:1080px;margin:0 auto;}
.feature-item{display:flex;gap:28px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:22px;padding:36px;backdrop-filter:blur(12px);transition:transform .28s,border-color .28s,box-shadow .28s;position:relative;overflow:hidden;}
.feature-item:first-child{grid-column:1/-1;background:linear-gradient(135deg,rgba(255,255,255,.06),rgba(212,175,55,.06));border-color:rgba(212,175,55,.25);}
.feature-item:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.4);box-shadow:0 10px 40px rgba(0,0,0,.18),var(--glow-cyan);}
.feature-item:first-child:hover{border-color:rgba(212,175,55,.5);box-shadow:0 10px 40px rgba(0,0,0,.18),var(--glow-gold);}
.feature-num{font-size:52px;font-weight:800;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(212,175,55,.55);flex-shrink:0;}
.feature-item:not(:first-child) .feature-num{-webkit-text-stroke-color:rgba(34,211,238,.5);}
.feature-body{flex:1;}
.feature-body h3{font-size:20px;font-weight:700;margin-bottom:8px;color:var(--color-text-primary);}
.feature-body p{font-size:14px;color:var(--color-text-secondary);line-height:1.7;}
.feature-icon{position:absolute;right:24px;bottom:20px;opacity:.06;}
.feature-icon svg{width:72px;height:72px;}
@media (max-width:900px){.feature-list{grid-template-columns:1fr;}.feature-item:first-child{grid-column:1;}}
@media (max-width:640px){.feature-item{padding:26px;gap:18px;}.feature-num{font-size:38px;}}

/* Scenarios */
.scenarios{background:var(--color-bg-secondary);position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.03);border-bottom:1px solid rgba(255,255,255,.03);}
.scenario-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;max-width:1080px;margin:0 auto 80px;}
.scenario-row:last-child{margin-bottom:0;}
.scenario-row.reverse .scenario-image{order:2;}
.scenario-image{border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.12);box-shadow:0 14px 40px rgba(0,0,0,.28);aspect-ratio:4/3;position:relative;}
.scenario-image img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.scenario-row:hover .scenario-image img{transform:scale(1.03);}
.scenario-text{padding:10px 0;}
.scenario-tag{display:inline-block;padding:4px 12px;border-radius:16px;background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);color:var(--color-accent-cyan);font-size:12px;font-weight:600;margin-bottom:14px;}
.scenario-text h3{font-size:26px;font-weight:700;margin-bottom:12px;color:var(--color-text-primary);}
.scenario-text p{font-size:15px;color:var(--color-text-secondary);line-height:1.75;margin-bottom:16px;}
.scenario-text ul{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:14px;}
.scenario-text ul li{font-size:13px;color:var(--color-text-secondary);display:flex;align-items:center;gap:6px;}
.scenario-text ul li::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--color-accent-gold);flex-shrink:0;}
@media (max-width:900px){
  .scenario-row{grid-template-columns:1fr;gap:32px;}
  .scenario-row.reverse .scenario-image{order:0;}
  .scenario-text h3{font-size:21px;}
}

/* Cases */
.cases{position:relative;z-index:1;}
.case-featured{display:grid;grid-template-columns:1.2fr .8fr;border-radius:24px;overflow:hidden;background:var(--glass-bg);border:1px solid var(--glass-border);max-width:1080px;margin:0 auto 48px;transition:border-color .3s,box-shadow .3s;}
.case-featured:hover{border-color:rgba(212,175,55,.3);box-shadow:0 12px 40px rgba(0,0,0,.2);}
.case-featured-image{min-height:320px;background-size:cover;background-position:center;position:relative;}
.case-featured-image::after{content:'';position:absolute;inset:0;background:linear-gradient(to right,transparent 60%,rgba(7,13,31,.55));}
.case-featured-info{padding:42px;display:flex;flex-direction:column;justify-content:center;}
.case-tag{display:inline-block;align-self:flex-start;padding:4px 12px;border-radius:14px;background:rgba(212,175,55,.12);border:1px solid rgba(212,175,55,.28);color:var(--color-accent-gold);font-size:12px;font-weight:600;margin-bottom:16px;}
.case-featured-info h3{font-size:24px;font-weight:700;margin-bottom:12px;line-height:1.35;color:var(--color-text-primary);}
.case-featured-info p{font-size:14px;color:var(--color-text-secondary);line-height:1.7;margin-bottom:24px;}
.case-metric{display:flex;gap:32px;border-top:1px solid rgba(255,255,255,.08);padding-top:20px;}
.case-metric div{flex:1;}
.case-metric strong{display:block;font-size:30px;font-weight:800;color:var(--color-accent-gold);line-height:1.2;}
.case-metric span{font-size:12px;color:var(--color-text-secondary);}
.case-scroll{display:flex;gap:20px;overflow-x:auto;padding-bottom:12px;max-width:1080px;margin:0 auto;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.2) transparent;}
.case-scroll::-webkit-scrollbar{height:5px;border-radius:10px;}
.case-scroll::-webkit-scrollbar-track{background:rgba(255,255,255,.03);border-radius:10px;}
.case-scroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.2);border-radius:10px;}
.case-mini{min-width:250px;flex-shrink:0;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:18px;transition:transform .25s,border-color .25s;}
.case-mini:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.35);}
.case-mini img{width:100%;height:120px;object-fit:cover;border-radius:10px;margin-bottom:12px;}
.case-mini h4{font-size:14px;font-weight:600;color:var(--color-text-primary);margin-bottom:4px;}
.case-mini p{font-size:12px;color:var(--color-text-secondary);}
@media (max-width:900px){.case-featured{grid-template-columns:1fr;}.case-featured-image{min-height:240px;}.case-featured-info{padding:30px;}}
@media (max-width:640px){.case-metric{flex-wrap:wrap;gap:16px;}.case-metric div{flex:1;min-width:80px;}}

/* Pricing */
.pricing{background:var(--color-bg-secondary);position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.03);border-bottom:1px solid rgba(255,255,255,.03);}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:1080px;margin:0 auto;align-items:stretch;}
.price-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:24px;padding:36px 32px;backdrop-filter:blur(12px);display:flex;flex-direction:column;position:relative;transition:transform .3s,border-color .3s,box-shadow .3s;}
.price-card:hover{transform:translateY(-5px);border-color:rgba(255,255,255,.22);}
.price-card.recommended{border:1.5px solid var(--color-accent-gold);box-shadow:var(--glow-gold),0 12px 40px rgba(0,0,0,.22);}
.price-card.recommended:hover{transform:translateY(-5px);box-shadow:0 8px 40px rgba(212,175,55,.35);}
.price-badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#D4AF37,#B8860B);color:#0B1120;font-size:12px;font-weight:700;padding:5px 18px;border-radius:20px;white-space:nowrap;box-shadow:0 4px 14px rgba(212,175,55,.35);}
.price-name{font-size:17px;font-weight:600;color:var(--color-text-primary);margin-bottom:18px;}
.price-amount{font-size:44px;font-weight:800;color:var(--color-text-primary);line-height:1;margin-bottom:4px;display:flex;align-items:baseline;gap:4px;}
.price-amount .currency{font-size:20px;font-weight:700;color:var(--color-accent-gold);}
.price-amount .period{font-size:14px;font-weight:400;color:var(--color-text-secondary);}
.price-desc{font-size:13px;color:var(--color-text-secondary);margin-bottom:26px;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.08);}
.price-features{flex:1;margin-bottom:32px;display:flex;flex-direction:column;gap:12px;}
.price-features li{font-size:14px;color:var(--color-text-secondary);display:flex;align-items:flex-start;gap:10px;line-height:1.5;}
.price-features li::before{content:'✓';color:var(--color-accent-cyan);font-weight:700;flex-shrink:0;margin-top:1px;}
.recommended .price-features li::before{color:var(--color-accent-gold);}
@media (max-width:900px){.pricing-grid{grid-template-columns:1fr;max-width:480px;}}
@media (max-width:640px){.price-card{padding:28px 22px;}}

/* FAQ */
.faq{position:relative;z-index:1;}
.faq-list{max-width:820px;margin:0 auto;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:24px;backdrop-filter:blur(14px);overflow:hidden;}
.faq-item{border-bottom:1px solid rgba(255,255,255,.07);}
.faq-item:last-child{border-bottom:none;}
.faq-question{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 28px;cursor:pointer;transition:background .25s;}
.faq-question:hover{background:rgba(255,255,255,.03);}
.faq-question span{font-size:16px;font-weight:500;color:var(--color-text-primary);line-height:1.4;}
.faq-icon{width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:18px;color:var(--color-accent-gold);transition:transform .35s;border:1px solid rgba(212,175,55,.35);}
.faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(212,175,55,.15);}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .38s ease,padding .3s ease;padding:0 28px;}
.faq-item.open .faq-answer{max-height:240px;padding:0 28px 24px;}
.faq-answer p{font-size:14px;color:var(--color-text-secondary);line-height:1.75;padding-top:4px;}
@media (max-width:640px){.faq-question{padding:18px 20px;}.faq-question span{font-size:15px;}.faq-item.open .faq-answer{padding:0 20px 20px;}}

/* CTA */
.cta-section{position:relative;z-index:1;padding:110px 0;overflow:hidden;}
.cta-inner{position:relative;border-radius:30px;padding:70px 60px;background:linear-gradient(135deg,rgba(7,13,31,.88),rgba(12,21,48,.85)),url('/assets/images/backpic/back-2.png') center/cover;border:1px solid rgba(212,175,55,.22);box-shadow:var(--glow-gold),0 18px 60px rgba(0,0,0,.35);display:flex;align-items:center;justify-content:space-between;gap:40px;max-width:1080px;margin:0 auto;overflow:hidden;}
.cta-inner::before{content:'';position:absolute;top:-80px;right:-60px;width:220px;height:220px;border-radius:50%;background:rgba(212,175,55,.18);filter:blur(80px);pointer-events:none;}
.cta-text h2{font-size:32px;font-weight:800;color:var(--color-text-primary);margin-bottom:12px;line-height:1.3;}
.cta-text p{font-size:16px;color:var(--color-text-secondary);max-width:480px;line-height:1.7;}
.cta-actions{flex-shrink:0;}
@media (max-width:900px){.cta-inner{flex-direction:column;align-items:flex-start;padding:48px 32px;}.cta-actions{width:100%;}.cta-actions .btn-primary{width:100%;justify-content:center;}}
@media (max-width:640px){.cta-inner{padding:36px 24px;}.cta-text h2{font-size:24px;}}

/* Footer */
.site-footer{background:#050A16;position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.06);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:48px;}
.footer-brand .logo{font-size:22px;margin-bottom:14px;display:inline-block;}
.footer-brand p{font-size:14px;color:var(--color-text-secondary);line-height:1.7;max-width:300px;}
.footer-col h4{font-size:15px;font-weight:700;color:var(--color-text-primary);margin-bottom:18px;position:relative;padding-bottom:8px;}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:28px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--color-accent-gold),transparent);}
.footer-col a{display:block;font-size:14px;color:var(--color-text-secondary);padding:7px 0;transition:color .25s,padding-left .25s;}
.footer-col a:hover{color:var(--color-accent-gold);padding-left:6px;}
.footer-col p{font-size:14px;color:var(--color-text-secondary);line-height:1.8;margin-bottom:6px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding:22px 0;text-align:center;}
.footer-bottom p{font-size:13px;color:rgba(148,163,184,.7);}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px;}.footer-brand{grid-column:1/-1;}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr;}.footer-brand{grid-column:1;}}

/* Focus states */
a:focus-visible,button:focus-visible{outline:2px solid var(--color-accent-cyan);outline-offset:3px;border-radius:6px;}
.nav-link:focus-visible,.btn-primary:focus-visible,.btn-outline:focus-visible{outline:2px solid var(--color-accent-gold);outline-offset:3px;}

/* roulang page: category1 */
:root {
            --color-bg-primary: #070D1F;
            --color-bg-secondary: #0C1530;
            --color-accent-blue: #2563EB;
            --color-accent-cyan: #22D3EE;
            --color-accent-gold: #D4AF37;
            --color-text-primary: #F1F5F9;
            --color-text-secondary: #94A3B8;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glow-gold: 0 0 24px rgba(212, 175, 55, 0.40);
            --glow-cyan: 0 0 24px rgba(34, 211, 238, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-bg-primary);
            color: var(--color-text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -1;
            pointer-events: none;
            background:
                radial-gradient(600px 400px at 15% 10%, rgba(34, 211, 238, 0.06), transparent 60%),
                radial-gradient(700px 500px at 85% 90%, rgba(212, 175, 55, 0.06), transparent 60%);
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 64px;
            background: rgba(7, 13, 31, 0.78);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--glass-border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 20px;
            font-weight: 700;
            white-space: nowrap;
        }

        .brand .logo {
            color: var(--color-accent-gold);
        }

        .brand span {
            color: var(--color-text-primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 15px;
            color: var(--color-text-secondary);
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            transition: color 0.25s;
        }

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

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent-gold), var(--color-accent-cyan));
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.25s;
            cursor: pointer;
        }

        .search-btn:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }

        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            color: var(--color-text-primary);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.25s;
        }

        .menu-toggle:hover {
            border-color: var(--color-accent-gold);
            color: var(--color-accent-gold);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border: none;
            cursor: pointer;
            transition: all 0.25s;
        }

        .btn-primary {
            background: linear-gradient(135deg, #D4AF37, #B8860B);
            color: #0B1120;
            box-shadow: var(--glow-gold);
        }

        .btn-primary:hover {
            filter: brightness(1.12);
            box-shadow: 0 0 32px rgba(212, 175, 55, 0.55);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: var(--color-text-primary);
        }

        .btn-outline:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
            background: rgba(34, 211, 238, 0.08);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .btn:focus-visible,
        .nav-link:focus-visible,
        .search-btn:focus-visible,
        .menu-toggle:focus-visible,
        .faq-q:focus-visible {
            outline: 2px solid var(--color-accent-cyan);
            outline-offset: 3px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent-gold);
            background: rgba(212, 175, 55, 0.12);
            border: 1px solid rgba(212, 175, 55, 0.3);
            margin-bottom: 24px;
        }

        .hero {
            padding: 120px 0 80px;
            position: relative;
        }

        @media (min-width: 1024px) {
            .hero-inner {
                display: grid;
                grid-template-columns: 55% 45%;
                gap: 48px;
                align-items: center;
                min-height: 460px;
            }
        }

        .hero-title {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .hero-sub {
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 520px;
            margin-bottom: 32px;
        }

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

        .hero-visual {
            position: relative;
        }

        .arch-frame {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            padding: 14px;
            backdrop-filter: blur(16px);
        }

        .arch-frame::before {
            content: "";
            position: absolute;
            top: 32px;
            left: 50%;
            transform: translateX(-50%);
            width: 58%;
            height: 90px;
            border: 2px solid rgba(212, 175, 55, 0.55);
            border-bottom: none;
            border-radius: 100px 100px 0 0;
            z-index: 2;
            pointer-events: none;
        }

        .arch-frame img {
            border-radius: 18px;
            width: 100%;
            height: 340px;
            object-fit: cover;
        }

        .stats {
            border-top: 1px solid var(--glass-border);
            border-bottom: 1px solid var(--glass-border);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .stat-item {
            padding: 28px 20px;
            text-align: center;
            border-right: 1px solid var(--glass-border);
        }

        .stat-item:last-child {
            border-right: none;
        }

        @media (max-width: 768px) {
            .stat-item:nth-child(2) {
                border-right: none;
            }

            .stat-item:nth-child(3),
            .stat-item:nth-child(4) {
                border-top: 1px solid var(--glass-border);
            }
        }

        .stat-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-accent-gold);
            line-height: 1.2;
        }

        .stat-label {
            color: var(--color-text-secondary);
            font-size: 13px;
            margin-top: 6px;
        }

        .section {
            padding: 100px 0;
        }

        .section-alt {
            background: rgba(12, 21, 48, 0.4);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .kicker {
            display: inline-block;
            color: var(--color-accent-gold);
            font-size: 13px;
            letter-spacing: 2px;
            font-weight: 600;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-head h2,
        .intro-copy h2 {
            font-size: 32px;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--color-text-secondary);
            margin-top: 12px;
            font-size: 15px;
        }

        @media (max-width: 768px) {
            .section-head h2,
            .intro-copy h2 {
                font-size: 24px;
            }
        }

        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent-gold);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25), var(--glow-gold);
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .intro-copy p {
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            font-size: 15px;
        }

        .check-list {
            list-style: none;
            margin-top: 20px;
        }

        .check-list li {
            color: var(--color-text-secondary);
            font-size: 14px;
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .check-list i {
            color: var(--color-accent-cyan);
            font-size: 13px;
        }

        .intro-image img {
            border-radius: 24px;
            border: 1px solid var(--glass-border);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        .subcats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        @media (max-width: 768px) {
            .subcats-grid {
                grid-template-columns: 1fr;
            }
        }

        .subcat-card {
            padding: 28px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .subcat-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-accent-cyan);
        }

        .subcat-card h3 {
            font-size: 18px;
            font-weight: 600;
        }

        .subcat-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            flex: 1;
        }

        .subcat-link {
            color: var(--color-accent-gold);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.25s, color 0.25s;
        }

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

        .process-wrap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        @media (max-width: 768px) {
            .process-wrap {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        .process-step {
            position: relative;
            padding: 32px 24px;
        }

        .process-num {
            font-size: 48px;
            font-weight: 800;
            color: rgba(212, 175, 55, 0.3);
            line-height: 1;
        }

        .process-step h3 {
            margin-top: 16px;
            font-size: 18px;
            font-weight: 600;
        }

        .process-step p {
            color: var(--color-text-secondary);
            font-size: 14px;
            margin-top: 10px;
        }

        .faq-wrap {
            max-width: 768px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 16px;
            border-radius: 16px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            overflow: hidden;
            backdrop-filter: blur(12px);
            transition: border-color 0.25s;
        }

        .faq-item.active {
            border-color: rgba(212, 175, 55, 0.5);
        }

        .faq-q {
            width: 100%;
            text-align: left;
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-primary);
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .faq-q .icon {
            transition: transform 0.3s;
            color: var(--color-accent-gold);
            font-size: 16px;
            flex-shrink: 0;
        }

        .faq-item.active .faq-q .icon {
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-a-inner {
            padding: 0 24px 18px;
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }

        .cta {
            padding: 100px 0;
        }

        @media (max-width: 768px) {
            .cta {
                padding: 60px 0;
            }
        }

        .cta-card {
            position: relative;
            border-radius: 32px;
            overflow: hidden;
            padding: 80px 48px;
            text-align: center;
            background: linear-gradient(to right, rgba(7, 13, 31, 0.85), rgba(7, 13, 31, 0.6)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            border: 1px solid var(--glass-border);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), var(--glow-gold);
        }

        @media (max-width: 768px) {
            .cta-card {
                padding: 48px 24px;
                border-radius: 24px;
            }
        }

        .cta-card h2 {
            font-size: 32px;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-card p {
            color: var(--color-text-secondary);
            margin-bottom: 32px;
            font-size: 16px;
        }

        .site-footer {
            background: #050A16;
            border-top: 1px solid var(--glass-border);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .footer-brand .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-accent-gold);
        }

        .footer-brand .logo span {
            color: var(--color-text-primary);
        }

        .footer-brand p {
            color: var(--color-text-secondary);
            font-size: 14px;
            margin-top: 12px;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--color-text-primary);
        }

        .footer-col a,
        .footer-col p {
            display: block;
            color: var(--color-text-secondary);
            font-size: 14px;
            margin-bottom: 10px;
            transition: color 0.25s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            text-align: center;
            color: var(--color-text-secondary);
            font-size: 13px;
        }

        @media (max-width: 767px) {
            .menu-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(7, 13, 31, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 32px;
                gap: 20px;
                border-bottom: 1px solid var(--glass-border);
                transform: translateY(-140%);
                transition: transform 0.3s ease;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            }

            .main-nav.open {
                transform: translateY(0);
            }

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

            .nav-link.active {
                color: var(--color-accent-gold);
            }

            .hero-title {
                font-size: 32px;
            }

            .hero {
                padding: 100px 0 60px;
            }

            .hero-visual {
                margin-top: 32px;
            }
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .hero-inner {
                display: grid;
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-visual {
                max-width: 640px;
            }

            .process-wrap {
                grid-template-columns: 1fr 1fr;
            }

            .process-step:last-child {
                grid-column: 1 / -1;
            }
        }

/* roulang page: article */
:root {
  --color-bg-primary: #070D1F;
  --color-bg-secondary: #0C1530;
  --color-accent-blue: #2563EB;
  --color-accent-cyan: #22D3EE;
  --color-accent-gold: #D4AF37;
  --color-text-primary: #F1F5F9;
  --color-text-secondary: #94A3B8;
  --glass-bg: rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.12);
  --glow-gold: 0 0 24px rgba(212,175,55,0.40);
  --glow-cyan: 0 0 24px rgba(34,211,238,0.35);
  --radius-lg: 20px;
  --radius-md: 14px;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(34, 211, 238, 0.07), transparent 480px),
    radial-gradient(circle at 90% 100%, rgba(212, 175, 55, 0.07), transparent 480px);
  pointer-events: none;
  z-index: 0;
}

a {
  text-decoration: none;
  color: inherit;
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 64px;
  z-index: 100;
  background: rgba(7, 13, 31, 0.76);
  border-bottom: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
}

.logo span {
  color: var(--color-accent-gold);
}

.main-nav {
  display: flex;
  gap: 28px;
}

.nav-link {
  color: var(--color-text-secondary);
  font-size: 15px;
  padding: 8px 0;
  position: relative;
  transition: color 0.2s ease;
}

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

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

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent-gold);
  border-radius: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-search {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
}

.btn-search:hover {
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
  box-shadow: var(--glow-cyan);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-gold), #B8860B);
  color: #0B1120;
  padding: 10px 24px;
  border: none;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--glow-gold);
  transition: all 0.25s ease;
}

.btn-primary:hover {
  filter: brightness(1.12);
  box-shadow: 0 0 32px rgba(212, 175, 55, 0.55);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: scale(0.98);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: var(--color-text-secondary);
  font-size: 16px;
  transition: all 0.25s ease;
}

.menu-toggle:hover {
  border-color: var(--color-accent-gold);
  color: var(--color-accent-gold);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: rgba(7, 13, 31, 0.97);
  border-bottom: 1px solid var(--glass-border);
  padding: 16px 24px 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.mobile-menu .nav-link {
  display: block;
  padding: 12px 0;
  font-size: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.mobile-menu .nav-link.active {
  color: var(--color-accent-gold);
}

.mobile-menu .nav-link.active::after {
  display: none;
}

.mobile-menu .btn-primary {
  margin-top: 16px;
  justify-content: center;
}

.page-main {
  padding-top: 128px;
  padding-bottom: 80px;
  min-height: 60vh;
}

.breadcrumb {
  max-width: 960px;
  margin: 0 auto 40px;
  font-size: 14px;
  color: var(--color-text-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: var(--color-accent-cyan);
}

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.2);
}

.breadcrumb .current {
  color: var(--color-text-primary);
  font-weight: 500;
}

.article-card {
  max-width: 960px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 44px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.article-title {
  font-size: 36px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.article-content {
  max-width: 72ch;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-primary);
}

.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--color-text-primary);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--color-text-primary);
}

.article-content p {
  margin: 16px 0;
}

.article-content ul,
.article-content ol {
  margin: 16px 0;
  padding-left: 28px;
}

.article-content li {
  margin: 8px 0;
}

.article-content blockquote {
  border-left: 4px solid var(--color-accent-gold);
  background: rgba(212, 175, 55, 0.08);
  padding: 14px 20px;
  border-radius: 0 12px 12px 0;
  color: var(--color-text-primary);
  margin: 24px 0;
}

.article-content img {
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  margin: 24px 0;
}

.article-content a {
  color: var(--color-accent-cyan);
  text-decoration: underline;
  transition: color 0.2s ease;
}

.article-content a:hover {
  color: var(--color-text-primary);
}

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

.article-content th,
.article-content td {
  border: 1px solid var(--glass-border);
  padding: 12px 16px;
  text-align: left;
}

.not-found {
  text-align: center;
  padding: 48px 24px;
}

.empty-icon {
  font-size: 44px;
  color: var(--color-accent-gold);
  margin-bottom: 16px;
}

.empty-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 12px;
}

.empty-desc {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin-bottom: 28px;
}

.related-section {
  max-width: 960px;
  margin: 48px auto 0;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-heading h2 {
  font-size: 26px;
  font-weight: 700;
}

.section-heading-line {
  flex: 1;
  height: 1px;
  margin-left: 24px;
  background: rgba(255, 255, 255, 0.1);
}

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

.related-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 16px;
  transition: all 0.25s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-gold);
  background: rgba(255, 255, 255, 0.06);
}

.related-thumb {
  width: 80px;
  height: 80px;
  border-radius: 12px;
  object-fit: cover;
  flex-shrink: 0;
}

.related-body h3 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.related-body p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

.related-time {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

.back-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-top: 32px;
}

.back-links a {
  color: var(--color-accent-gold);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.back-links a:hover {
  color: var(--color-text-primary);
}

.cta-section {
  margin-top: 56px;
}

.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background:
    linear-gradient(120deg, rgba(7, 13, 31, 0.92), rgba(7, 13, 31, 0.72)),
    url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 44px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 0 40px rgba(212, 175, 55, 0.08);
}

.cta-box h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-box p {
  color: var(--color-text-secondary);
  font-size: 15px;
  max-width: 560px;
}

.site-footer {
  background: #050A16;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding-top: 48px;
  padding-bottom: 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  display: inline-block;
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--color-text-secondary);
  font-size: 14px;
  max-width: 340px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text-primary);
}

.footer-col a,
.footer-col p {
  display: block;
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
}

@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }

  .article-card {
    padding: 32px;
  }

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

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

@media (max-width: 768px) {
  .page-main {
    padding-top: 104px;
    padding-bottom: 60px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .header-right .btn-primary {
    display: none;
  }

  .article-card {
    padding: 28px 22px;
    border-radius: 18px;
  }

  .article-title {
    font-size: 30px;
  }

  .article-meta {
    gap: 14px;
    font-size: 13px;
  }

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

  .cta-box {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
  }

  .cta-box p {
    max-width: none;
  }

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

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

  .header-left {
    gap: 12px;
  }

  .logo {
    font-size: 18px;
  }

  .article-title {
    font-size: 26px;
  }

  .breadcrumb {
    font-size: 13px;
  }

  .related-card {
    flex-direction: column;
  }

  .related-thumb {
    width: 100%;
    height: 140px;
  }

  .cta-box h2 {
    font-size: 22px;
  }

  .btn-primary {
    width: 100%;
    justify-content: center;
  }
}