/* roulang page: index */
:root{--bg-primary:#0B0F1A;--bg-card:rgba(255,255,255,0.05);--bg-input:rgba(0,0,0,0.25);--border-card:rgba(255,255,255,0.08);--border-light:rgba(255,255,255,0.1);--primary:#2E90FA;--secondary:#20D6C2;--accent:#F5A524;--text-primary:#E8EDF5;--text-secondary:#8DA0BF;--text-disabled:#54637A;--success:#28A67D;--error:#E5484D;--radius-card:16px;--radius-btn:8px;--radius-md:12px;--shadow-card:0 8px 32px rgba(0,0,0,0.35);--shadow-hover:0 16px 48px rgba(0,0,0,0.45);--shadow-btn:0 4px 20px rgba(46,144,250,0.35);--gradient-btn:135deg,#2E90FA 0%,#20D6C2 100%;--container:1200px;--pad:24px;--font:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:'';position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at 20% 0%,rgba(46,144,250,0.08) 0%,transparent 55%),radial-gradient(ellipse at 90% 20%,rgba(32,214,194,0.05) 0%,transparent 40%),linear-gradient(rgba(255,255,255,0.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.035) 1px,transparent 1px);background-size:100% 100%,100% 100%,40px 40px,40px 40px;z-index:0}
img{max-width:100%;display:block}a{color:inherit;text-decoration:none}button,input,select,textarea{font-family:inherit;font-size:inherit;border:none;background:none;outline:none}button{cursor:pointer}
.container{max-width:var(--container);margin:0 auto;padding:0 var(--pad);position:relative;z-index:1}
.section{padding:90px 0;position:relative;z-index:1}
.section-title{font-size:32px;font-weight:700;letter-spacing:-0.02em;line-height:1.2;margin-bottom:8px;display:flex;align-items:center;gap:12px}.section-title::before{content:'';width:4px;height:28px;background:var(--secondary);border-radius:2px;flex-shrink:0}
.section-sub{font-size:15px;color:var(--text-secondary);margin-bottom:48px;max-width:600px;line-height:1.7}
@media(max-width:768px){.section{padding:56px 0}.section-title{font-size:26px}.section-sub{margin-bottom:32px}}
/* Header */
.site-header{position:sticky;top:0;z-index:100;height:72px;background:rgba(11,15,26,0.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,0.06)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;flex-shrink:0}
.logo-icon{width:36px;height:36px;border-radius:10px;background:var(--gradient-btn);display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff;position:relative;box-shadow:0 0 16px rgba(46,144,250,0.35)}
.main-nav{display:flex;align-items:center;gap:4px;margin:0 20px}
.main-nav a{padding:8px 16px;font-size:15px;color:var(--text-secondary);border-radius:var(--radius-btn);transition:all .2s;position:relative;font-weight:400}
.main-nav a:hover{color:var(--text-primary);background:rgba(255,255,255,0.04)}
.main-nav a.active{color:#fff;background:rgba(46,144,250,0.1)}
.main-nav a.active::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:20px;height:4px;background:var(--secondary);border-radius:2px}
.nav-tools{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{width:200px;height:38px;background:rgba(0,0,0,0.3);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius-btn);padding:0 14px;color:var(--text-primary);font-size:13px;transition:all .25s}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,144,250,0.15)}
.search-box input::placeholder{color:var(--text-disabled)}
.search-box svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:14px;height:14px;color:var(--text-disabled);pointer-events:none}
.search-box input{padding-left:34px}
.search-box .kbd{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.08);border-radius:4px;padding:2px 6px;font-size:11px;color:var(--text-secondary);pointer-events:none}
.nav-btn{display:flex;align-items:center;gap:8px}
.btn-cta{height:38px;padding:0 20px;background:var(--gradient-btn);border-radius:var(--radius-btn);font-size:14px;font-weight:600;color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:all .25s;box-shadow:var(--shadow-btn)}
.btn-cta:hover{box-shadow:0 0 30px rgba(46,144,250,0.5);transform:translateY(-1px)}
.btn-cta:active{transform:scale(0.97)}
.btn-cta:focus-visible{outline:2px solid var(--secondary);outline-offset:2px}
.btn-ghost{height:38px;padding:0 18px;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius-btn);font-size:14px;color:var(--text-primary);display:inline-flex;align-items:center;gap:6px;transition:all .25s}
.btn-ghost:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.2)}
.btn-ghost:active{transform:scale(0.97)}
.btn-accent{background:var(--accent);box-shadow:0 4px 24px rgba(245,165,36,0.35);color:#0B0F1A}
.btn-accent:hover{box-shadow:0 0 36px rgba(245,165,36,0.5);color:#0B0F1A}
.hamburger{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:8px;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);flex-shrink:0}
.hamburger span{width:18px;height:2px;background:var(--text-primary);display:block;position:relative;transition:all .3s}
.hamburger span::before,.hamburger span::after{content:'';position:absolute;left:0;width:18px;height:2px;background:var(--text-primary);transition:all .3s}
.hamburger span::before{top:-6px}.hamburger span::after{top:6px}
.hamburger.open span{background:transparent}.hamburger.open span::before{top:0;transform:rotate(45deg)}.hamburger.open span::after{top:0;transform:rotate(-45deg)}
/* Mobile Nav */
.mobile-nav{position:fixed;top:72px;left:0;right:0;bottom:0;background:rgba(11,15,26,0.97);backdrop-filter:blur(20px);z-index:99;padding:24px;display:none;flex-direction:column;gap:8px;opacity:0;transform:translateX(30px);transition:all .3s ease}
.mobile-nav.show{display:flex;opacity:1;transform:translateX(0)}
.mobile-nav a{padding:16px;border-radius:var(--radius-btn);font-size:18px;font-weight:500;color:var(--text-primary);background:rgba(255,255,255,0.03);display:flex;align-items:center;gap:10px}
.mobile-nav a:hover,.mobile-nav a.active{background:rgba(46,144,250,0.12)}
.mobile-nav a.active{color:var(--primary)}
.mobile-nav .btn-cta{margin-top:16px;height:48px;width:100%;justify-content:center}
@media(max-width:1024px){.main-nav{display:none}.hamburger{display:flex}.search-box{display:none}.mobile-nav.show{display:flex}}
@media(max-width:1024px){.site-header .container{gap:12px}.nav-btn .btn-cta{padding:0 16px;font-size:13px}}
@media(max-width:640px){.nav-btn .btn-ghost{display:none}.nav-btn .btn-cta{padding:0 14px;font-size:13px}}
/* Hero */
.hero{position:relative;min-height:560px;display:flex;align-items:center;padding:80px 0;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,15,26,0.8) 0%,rgba(11,15,26,0.6) 50%,rgba(11,15,26,0.75) 100%)}
.hero-content{position:relative;z-index:2;max-width:720px}
.hero h1{font-size:50px;font-weight:700;line-height:1.25;letter-spacing:-0.02em;color:#fff;margin-bottom:20px}
.hero h1 .hl{color:var(--primary);text-shadow:0 0 20px rgba(46,144,250,0.5)}
.hero-sub{font-size:18px;color:var(--text-secondary);line-height:1.7;margin-bottom:36px;max-width:560px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px}
.hero-trust{display:flex;align-items:center;gap:28px;flex-wrap:wrap;padding-top:24px;border-top:1px solid rgba(255,255,255,0.06)}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary)}
.trust-item svg{width:16px;height:16px;color:var(--secondary)}
@media(max-width:768px){.hero{min-height:auto;padding:64px 0}.hero h1{font-size:34px}.hero-sub{font-size:16px}.hero-trust{gap:16px}}
/* Promo Tiers */
.promo-tiers{display:flex;gap:24px;align-items:flex-end;flex-wrap:wrap}
.promo-card{flex:1;min-width:280px;background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-card);padding:36px 28px;position:relative;transition:all .3s;backdrop-filter:blur(12px)}
.promo-card::before{content:'';position:absolute;top:0;left:24px;right:24px;height:1px;background:rgba(255,255,255,0.1);}
.promo-card:hover{background:rgba(255,255,255,0.08);border-color:var(--primary);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.promo-card:hover::after{content:'';position:absolute;top:-1px;left:0;right:0;height:2px;background:var(--secondary);border-radius:999px;box-shadow:0 0 12px var(--secondary)}
.promo-card.basic{height:340px}
.promo-card.standard{margin-top:-20px;height:400px;border-color:rgba(245,165,36,0.4);background:rgba(245,165,36,0.04)}
.promo-card.premium{height:440px;margin-top:-28px}
.promo-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--accent);color:#0B0F1A;font-size:12px;font-weight:700;padding:4px 16px;border-radius:999px;box-shadow:0 4px 16px rgba(245,165,36,0.35);white-space:nowrap}
.promo-card h3{font-size:20px;font-weight:600;margin-bottom:6px;color:var(--text-primary)}
.promo-desc{font-size:14px;color:var(--text-secondary);margin-bottom:24px}
.promo-list{list-style:none;margin-bottom:28px;padding:0}
.promo-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-secondary);margin-bottom:12px;line-height:1.5}
.promo-list li svg{width:16px;height:16px;color:var(--secondary);flex-shrink:0;margin-top:3px}
.promo-card .btn-cta{width:100%;height:44px}
.promo-card.premium .btn-cta{background:var(--accent);box-shadow:0 4px 24px rgba(245,165,36,0.35)}
@media(max-width:1024px){.promo-tiers{flex-direction:column;align-items:stretch}.promo-card.basic,.promo-card.standard,.promo-card.premium{margin:0;height:auto;min-height:320px}}
/* Compare Table */
.compare-wrap{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border-card);background:rgba(255,255,255,0.02)}
.compare-table{width:100%;border-collapse:collapse}
.compare-table th,.compare-table td{padding:20px 24px;text-align:center;border-bottom:1px solid rgba(255,255,255,0.04)}
.compare-table th{font-size:14px;color:var(--text-secondary);font-weight:500;padding:16px 24px}
.compare-table th:first-child,.compare-table td:first-child{text-align:left;font-size:14px;color:var(--text-secondary);width:30%}
.compare-table th.feature-name{color:var(--text-primary);font-weight:600;font-size:15px}
.compare-table tr:last-child td{border-bottom:none}
.compare-table .col-highlight{background:rgba(32,214,194,0.06);border-left:1px solid rgba(32,214,194,0.15);border-right:1px solid rgba(32,214,194,0.15);position:relative}
.compare-table .col-highlight:first-child{position:relative}
.compare-table .col-highlight .rec-tag{position:absolute;top:-1px;left:50%;transform:translateX(-50%);background:var(--secondary);color:#0B0F1A;font-size:11px;font-weight:700;padding:2px 14px;border-radius:0 0 6px 6px;z-index:2}
.compare-table .check{color:var(--primary)}.compare-table .cross{color:var(--text-disabled)}
.compare-table .price{font-size:24px;font-weight:700;color:var(--text-primary);font-variant-numeric:tabular-nums}
.compare-table .price small{font-size:13px;color:var(--text-secondary);font-weight:400}
.compare-table .btn-cta{height:38px;padding:0 18px;font-size:13px}
.compare-table .btn-ghost{height:38px;padding:0 18px;font-size:13px}
.compare-mobile{display:none}
@media(max-width:768px){.compare-table{display:none}.compare-mobile{display:flex;flex-direction:column;gap:24px}.compare-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-card);padding:28px;position:relative}.compare-card.hot{border-color:rgba(32,214,194,0.4);background:rgba(32,214,194,0.05)}.compare-card .rec-tag{position:absolute;top:0;right:20px;background:var(--secondary);color:#0B0F1A;font-size:11px;font-weight:700;padding:2px 12px;border-radius:0 0 6px 6px}.compare-card h4{font-size:20px;font-weight:600;margin-bottom:4px}.compare-card .price{font-size:26px;font-weight:700;margin:12px 0;color:var(--text-primary)}.compare-card .feature-list{list-style:none;padding:0;margin:16px 0 24px}.compare-card .feature-list li{display:flex;align-items:center;gap:8px;padding:8px 0;border-bottom:1px solid rgba(255,255,255,0.04);font-size:14px;color:var(--text-secondary)}.compare-card .feature-list li svg{width:16px;height:16px;color:var(--primary)}.compare-card .btn-cta{width:100%;height:44px}}
/* Limited Time */
.limited{background:linear-gradient(135deg,rgba(11,15,26,0.9),rgba(11,15,26,0.7));border-radius:var(--radius-card);border:1px solid rgba(245,165,36,0.25);padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;position:relative;overflow:hidden}
.limited::before{content:'';position:absolute;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(245,165,36,0.15),transparent 70%);top:-80px;right:-80px;animation:pulse 3s ease-in-out infinite}
.limited::after{content:'';position:absolute;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,rgba(46,144,250,0.1),transparent 70%);bottom:-60px;left:-60px;animation:pulse 4s ease-in-out infinite reverse}
@keyframes pulse{0%,100%{opacity:0.5}50%{opacity:1}}
.limited-left{position:relative;z-index:2;flex:1;min-width:260px}
.limited-left h2{font-size:28px;font-weight:700;margin-bottom:12px}
.limited-left h2 span{color:var(--accent)}
.limited-left p{color:var(--text-secondary);font-size:15px;line-height:1.7;max-width:460px}
.limited-right{display:flex;align-items:center;gap:16px;flex-wrap:wrap;position:relative;z-index:2}
.countdown-block{display:flex;gap:12px}
.count-item{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:12px;padding:16px 12px;text-align:center;min-width:64px;backdrop-filter:blur(8px)}
.count-item .num{font-size:24px;font-weight:700;color:var(--text-primary);font-variant-numeric:tabular-nums;line-height:1.2}
.count-item .label{font-size:12px;color:var(--text-disabled);margin-top:4px}
.limited-btn-wrap{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.limited .btn-accent{height:48px;padding:0 28px;font-size:15px;animation:btn-pulse 2s ease-in-out infinite}
@keyframes btn-pulse{0%,100%{box-shadow:0 4px 24px rgba(245,165,36,0.35)}50%{box-shadow:0 4px 36px rgba(245,165,36,0.6)}}
@media(max-width:768px){.limited{padding:40px 24px}.limited-left h2{font-size:24px}.count-item{min-width:56px;padding:12px 8px}.count-item .num{font-size:20px}}
/* News */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-card);overflow:hidden;transition:all .3s;display:flex;flex-direction:column;position:relative}
.news-card:hover{background:rgba(255,255,255,0.08);border-color:var(--primary);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.news-card:hover::after{content:'';position:absolute;top:-1px;left:0;right:0;height:2px;background:var(--secondary);border-radius:999px;box-shadow:0 0 12px var(--secondary)}
.news-card-cover{height:190px;background-size:cover;background-position:center;position:relative;display:flex;align-items:flex-start;padding:16px}
.news-card-cover::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(11,15,26,0.6))}
.news-card-tag{position:relative;z-index:2;background:rgba(46,144,250,0.85);color:#fff;font-size:12px;padding:4px 12px;border-radius:999px;backdrop-filter:blur(4px)}
.news-card-body{padding:20px 20px 16px;flex:1;display:flex;flex-direction:column}
.news-card-body h3{font-size:16px;font-weight:600;color:var(--text-primary);line-height:1.4;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:44px}
.news-card-body p{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:44px}
.news-card-meta{display:flex;align-items:center;gap:16px;font-size:12px;color:var(--text-disabled);border-top:1px solid rgba(255,255,255,0.04);padding-top:12px}
.news-empty{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 24px;background:var(--bg-card);border:1px dashed var(--border-card);border-radius:var(--radius-card)}
.news-empty svg{width:64px;height:64px;color:var(--text-disabled);margin-bottom:16px;opacity:0.5}
.news-empty p{color:var(--text-secondary);font-size:14px;margin-bottom:16px}
@media(max-width:1024px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.news-grid{grid-template-columns:1fr}.news-card-cover{height:220px}}
/* Form */
.contact-grid{display:grid;grid-template-columns:1.2fr 0.8fr;gap:32px}
.contact-form-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-card);padding:36px;backdrop-filter:blur(12px)}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;font-weight:500;color:var(--text-primary);margin-bottom:8px}
.form-group input,.form-group select,.form-group textarea{width:100%;height:44px;background:var(--bg-input);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius-btn);padding:0 14px;color:var(--text-primary);font-size:14px;transition:all .25s}
.form-group textarea{height:120px;padding:14px;resize:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,144,250,0.15)}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-disabled)}
.form-status{margin-top:16px;padding:12px 16px;border-radius:var(--radius-btn);font-size:14px;display:none}
.form-status.success{display:block;background:rgba(40,166,125,0.1);border:1px solid rgba(40,166,125,0.3);color:var(--success)}
.form-status.error{display:block;background:rgba(229,72,77,0.1);border:1px solid rgba(229,72,77,0.3);color:var(--error)}
.contact-info-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-card);padding:32px;display:flex;flex-direction:column;gap:24px;backdrop-filter:blur(12px)}
.contact-info-card .title{font-size:20px;font-weight:600;margin-bottom:4px}
.contact-info-card .subtitle{font-size:13px;color:var(--text-disabled)}
.contact-line{display:flex;align-items:flex-start;gap:14px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,0.04)}
.contact-line:last-child{border-bottom:none}
.contact-line svg{width:20px;height:20px;color:var(--primary);flex-shrink:0;margin-top:2px}
.contact-line .label{font-size:12px;color:var(--text-disabled);margin-bottom:2px}
.contact-line .value{font-size:14px;color:var(--text-primary)}
@media(max-width:768px){.contact-grid{grid-template-columns:1fr}}
/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-card);overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:rgba(255,255,255,0.15)}
.faq-item .q{display:flex;align-items:center;gap:14px;padding:18px 24px;cursor:pointer;transition:background .2s}
.faq-item .q:hover{background:rgba(255,255,255,0.03)}
.faq-item .q-icon{width:24px;height:24px;border-radius:50%;background:rgba(46,144,250,0.15);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}
.faq-item .q-text{flex:1;font-size:16px;font-weight:500;color:var(--text-primary)}
.faq-item .arrow{width:12px;height:12px;border-right:2px solid var(--text-disabled);border-bottom:2px solid var(--text-disabled);transform:rotate(45deg);transition:transform .3s;flex-shrink:0}
.faq-item.open .arrow{transform:rotate(-135deg)}
.faq-item .a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item .a-inner{padding:0 24px 20px 62px;font-size:14px;color:var(--text-secondary);line-height:1.7}
.faq-item.open .a{max-height:500px}
@media(max-width:640px){.faq-item .a-inner{padding:0 20px 16px 20px}}
/* Footer */
.site-footer{background:#070A12;border-top:1px solid rgba(255,255,255,0.06);padding:60px 0 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 0.8fr 0.8fr 1fr;gap:40px;padding-bottom:40px}
.footer-brand p{color:var(--text-secondary);font-size:14px;line-height:1.7;margin-top:16px;max-width:280px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:20px}
.footer-col ul{list-style:none;padding:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--text-secondary);font-size:14px;transition:all .2s}
.footer-col ul a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.05);padding:20px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--text-disabled)}
.footer-bottom a{color:var(--text-disabled)}
.footer-bottom a:hover{color:var(--text-primary)}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:32px}}
/* Back to top */
.back-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;border-radius:50%;background:var(--gradient-btn);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-btn);z-index:80;opacity:0;visibility:hidden;transition:all .3s}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-3px)}
.back-top svg{width:18px;height:18px;color:#fff}

/* roulang page: article */
:root {
  --bg: #0B0F1A;
  --bg-deep: #070A12;
  --surface: rgba(255,255,255,0.05);
  --surface-hover: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.08);
  --border-light: rgba(255,255,255,0.14);
  --primary: #2E90FA;
  --secondary: #20D6C2;
  --accent: #F5A524;
  --text: #E8EDF5;
  --text-secondary: #8DA0BF;
  --text-muted: #54637A;
  --success: #28A67D;
  --error: #E5484D;
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --shadow: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.45);
  --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
  --nav-h: 72px;
  --transition: all .3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  background-image: radial-gradient(ellipse 60% 40% at 15% 10%, rgba(46,144,250,0.12), transparent 60%),
                    radial-gradient(ellipse 50% 35% at 85% 20%, rgba(32,214,194,0.08), transparent 55%);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  min-height: 100vh;
}

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

a:hover {
  color: var(--secondary);
}

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

button, input {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  line-height: 1.4;
  min-height: 44px;
  transition: var(--transition);
  white-space: nowrap;
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, #2E90FA, #20D6C2);
  color: #fff;
  box-shadow: 0 0 20px rgba(46,144,250,0.3);
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 30px rgba(46,144,250,0.5);
  color: #fff;
}

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

.btn-primary:focus-visible {
  outline: 3px solid rgba(46,144,250,0.5);
  outline-offset: 2px;
}

.btn-secondary {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-light);
  color: var(--text);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.09);
  border-color: var(--secondary);
  color: var(--secondary);
}

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

.btn-secondary:focus-visible {
  outline: 3px solid rgba(32,214,194,0.3);
  outline-offset: 2px;
}

.btn-accent {
  background: var(--accent);
  color: #0B0F1A;
  animation: pulseGlow 2s infinite;
}

.btn-accent:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 24px rgba(245,165,36,0.4);
  color: #0B0F1A;
}

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

.btn-sm {
  min-height: 38px;
  padding: 8px 18px;
  font-size: 14px;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 16px rgba(245,165,36,0.4); }
  50% { box-shadow: 0 0 32px rgba(245,165,36,0.7); }
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(11,15,26,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--nav-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.logo:hover {
  color: var(--text);
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #2E90FA, #20D6C2);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 14px rgba(46,144,250,0.35);
}

.logo-icon svg {
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.main-nav a {
  position: relative;
  padding: 8px 16px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  border-radius: 6px;
  transition: var(--transition);
}

.main-nav a:hover {
  color: var(--primary);
  background: rgba(255,255,255,0.04);
}

.main-nav a.active {
  color: var(--text);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 16px;
  right: 16px;
  height: 3px;
  border-radius: 3px;
  background: var(--secondary);
  box-shadow: 0 0 12px rgba(32,214,194,0.6);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 0 12px;
  height: 38px;
  width: 220px;
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(46,144,250,0.15);
}

.search-box svg {
  flex-shrink: 0;
  opacity: 0.6;
}

.search-box input {
  background: transparent;
  border: none;
  outline: none;
  width: 100%;
  font-size: 14px;
  color: var(--text);
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.kbd {
  flex-shrink: 0;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: var(--transition);
}

.nav-toggle:hover {
  background: rgba(255,255,255,0.1);
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

/* ===== 面包屑 ===== */
.breadcrumb-bar {
  padding: 22px 0 8px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  background: rgba(11,15,26,0.5);
}

.breadcrumb-bar nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.breadcrumb-bar a {
  color: var(--text-secondary);
}

.breadcrumb-bar a:hover {
  color: var(--secondary);
}

.breadcrumb-bar .current {
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 320px;
}

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  padding: 76px 0 56px;
  text-align: center;
  background: linear-gradient(135deg, rgba(11,15,26,0.88), rgba(11,15,26,0.72)),
              url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}

.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.article-hero .container {
  position: relative;
  z-index: 2;
}

.article-hero h1 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  max-width: 860px;
  margin: 0 auto 20px;
  color: var(--text);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-secondary);
}

.meta-cat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(32,214,194,0.12);
  border: 1px solid rgba(32,214,194,0.3);
  color: var(--secondary);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
}

.meta-date,
.meta-views {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-date svg,
.meta-views svg {
  opacity: 0.6;
}

/* ===== 正文 ===== */
.article-content-wrap {
  padding: 56px 0 48px;
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
}

.article-body p {
  margin-bottom: 24px;
}

.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 44px 0 18px;
  padding-left: 14px;
  border-left: 4px solid var(--secondary);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 21px;
  font-weight: 600;
  margin: 32px 0 14px;
  line-height: 1.5;
}

.article-body h4 {
  font-size: 18px;
  font-weight: 600;
  margin: 26px 0 12px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 24px;
  padding-left: 24px;
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.8;
}

.article-body ul li::marker {
  color: var(--secondary);
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 28px auto;
  box-shadow: var(--shadow);
}

.article-body blockquote {
  border-left: 3px solid var(--primary);
  background: rgba(46,144,250,0.08);
  padding: 16px 22px;
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
  color: var(--text-secondary);
  font-style: normal;
}

.article-body a {
  color: var(--secondary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
  border-radius: 8px;
  overflow: hidden;
}

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

.article-body table th {
  background: rgba(255,255,255,0.06);
  font-weight: 600;
  color: var(--text);
}

.article-body table td {
  background: rgba(255,255,255,0.02);
}

.article-body table tr:hover td {
  background: rgba(255,255,255,0.04);
}

.article-body code {
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 14px;
  font-family: 'SF Mono', Consolas, monospace;
  color: var(--secondary);
}

.article-body pre {
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  overflow-x: auto;
  margin-bottom: 24px;
}

.article-body pre code {
  background: transparent;
  padding: 0;
  color: var(--text);
}

.article-not-found {
  text-align: center;
  padding: 80px 20px;
}

.article-not-found p {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ===== 标签区 ===== */
.article-tags-section {
  padding: 8px 0 48px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 760px;
  margin: 0 auto;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.tag:hover {
  background: rgba(32,214,194,0.1);
  border-color: var(--secondary);
  color: var(--secondary);
}

/* ===== 相关推荐 ===== */
.related-posts {
  padding: 48px 0 56px;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.section-head::before {
  content: '';
  width: 4px;
  height: 22px;
  border-radius: 4px;
  background: var(--secondary);
  box-shadow: 0 0 12px rgba(32,214,194,0.5);
}

.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

.related-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.related-card:hover {
  background: var(--surface-hover);
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  color: var(--text);
}

.related-card .cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.related-card .cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,15,26,0.5), transparent 60%);
}

.related-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

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

.related-card .body {
  padding: 20px 20px 24px;
}

.related-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  color: var(--text);
}

.related-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.related-card .meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 返回按钮 ===== */
.article-back {
  text-align: center;
  padding: 0 0 64px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 280px;
}

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

.footer-col ul {
  list-style: none;
  padding: 0;
}

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

.footer-col ul a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--secondary);
}

.footer-col ul li:not(a) {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .search-box {
    width: 160px;
  }

  .main-nav {
    gap: 0;
  }

  .main-nav a {
    padding: 8px 10px;
    font-size: 14px;
  }

  .header-inner {
    gap: 16px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(11,15,26,0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
    gap: 6px;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 8px;
    text-align: center;
  }

  .main-nav a.active::after {
    display: none;
  }

  .main-nav a.active {
    background: rgba(32,214,194,0.1);
    color: var(--secondary);
  }

  .search-box {
    display: none;
  }

  .header-actions .btn-sm {
    display: none;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

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

  .article-hero {
    padding: 52px 0 40px;
  }

  .breadcrumb-bar .current {
    max-width: 160px;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

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

  .article-body h2 {
    font-size: 22px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .logo {
    font-size: 16px;
  }

  .logo-icon {
    width: 28px;
    height: 28px;
  }

  .article-hero h1 {
    font-size: 24px;
    line-height: 1.35;
  }

  .article-meta {
    gap: 10px;
    font-size: 13px;
  }

  .breadcrumb-bar {
    font-size: 13px;
    overflow-x: auto;
  }

  .breadcrumb-bar .current {
    max-width: 140px;
  }

  .article-content-wrap {
    padding: 40px 0 32px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .tag-list {
    justify-content: flex-start;
  }

  .article-back {
    padding-bottom: 48px;
  }
}

/* roulang page: category1 */
:root {
    --bg: #0B0F1A;
    --bg-deep: #070A12;
    --surface: rgba(255, 255, 255, 0.05);
    --surface-hover: rgba(255, 255, 255, 0.08);
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.15);
    --primary: #2E90FA;
    --secondary: #20D6C2;
    --accent: #F5A524;
    --success: #28A67D;
    --error: #E5484D;
    --text: #E8EDF5;
    --text-secondary: #8DA0BF;
    --text-disabled: #54637A;
    --radius-card: 16px;
    --radius-btn: 8px;
    --radius-input: 8px;
    --radius-badge: 999px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 20px rgba(46, 144, 250, 0.45);
    --container: 1200px;
    --spacer: 100px;
    --font: 'PingFang SC', 'Microsoft YaHei', 'Noto 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: 1.7;
    -webkit-font-smoothing: antialiased;
    background-image:
        radial-gradient(ellipse 600px 300px at 10% -10%, rgba(46, 144, 250, 0.12), transparent),
        radial-gradient(ellipse 500px 260px at 90% 10%, rgba(32, 214, 194, 0.08), transparent),
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 42px 42px, 42px 42px;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.25s ease;
}
a:hover {
    color: var(--secondary);
}
img {
    max-width: 100%;
    display: block;
}
button,
input,
select,
textarea {
    font-family: var(--font);
    font-size: 14px;
}
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}
section {
    padding: var(--spacer) 0;
}
@media (max-width: 768px) {
    section {
        padding: 56px 0;
    }
}

/* ========== 导航 ========== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 72px;
    background: rgba(11, 15, 26, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header-inner {
    max-width: var(--container);
    margin: 0 auto;
    height: 72px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 24px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
}
.logo-icon {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 14px rgba(46, 144, 250, 0.35);
}
.logo-icon svg {
    width: 18px;
    height: 18px;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    margin-left: 12px;
}
.main-nav a {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    position: relative;
    transition: color 0.25s ease, background 0.25s ease;
}
.main-nav a:hover {
    color: var(--primary);
    background: rgba(255, 255, 255, 0.04);
}
.main-nav a.active {
    color: var(--text);
}
.main-nav a.active::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: -2px;
    height: 3px;
    border-radius: 3px;
    background: var(--secondary);
    box-shadow: 0 0 12px rgba(32, 214, 194, 0.6);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
}
.search-box {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-input);
    padding: 0 14px;
    height: 38px;
    width: 220px;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(46, 144, 250, 0.18);
}
.search-box svg {
    flex-shrink: 0;
    margin-right: 8px;
    opacity: 0.6;
}
.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text);
    font-size: 13px;
    width: 100%;
}
.search-box input::placeholder {
    color: var(--text-disabled);
}
.kbd-hint {
    font-size: 11px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    padding: 2px 7px;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    padding: 10px 22px;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.25s ease, filter 0.25s ease, background 0.25s ease;
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 0 16px rgba(46, 144, 250, 0.35);
}
.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 26px rgba(46, 144, 250, 0.55);
    color: #fff;
}
.btn-primary:active {
    transform: scale(0.98);
}
.btn-primary:focus-visible {
    outline: 2px solid var(--secondary);
    outline-offset: 2px;
}
.btn-ghost {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(8px);
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--secondary);
    color: var(--text);
    box-shadow: 0 0 14px rgba(32, 214, 194, 0.2);
}
.btn-ghost:active {
    transform: scale(0.98);
}
.btn-accent {
    background: var(--accent);
    color: #0B0F1A;
    box-shadow: 0 0 22px rgba(245, 165, 36, 0.4);
}
.btn-accent:hover {
    filter: brightness(1.06);
    color: #0B0F1A;
    box-shadow: 0 0 34px rgba(245, 165, 36, 0.6);
}
.btn-accent:active {
    transform: scale(0.98);
}
.btn-sm {
    padding: 7px 16px;
    font-size: 13px;
}
.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-btn);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}
.menu-toggle svg {
    width: 20px;
    height: 20px;
    stroke: var(--text);
}
.mobile-drawer {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(11, 15, 26, 0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 24px 28px;
    z-index: 999;
    flex-direction: column;
    gap: 6px;
}
.mobile-drawer.open {
    display: flex;
}
.mobile-drawer a {
    display: block;
    padding: 14px 16px;
    color: var(--text);
    font-size: 15px;
    border-radius: 10px;
    transition: background 0.2s ease, color 0.2s ease;
}
.mobile-drawer a:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--secondary);
}
.mobile-drawer a.active {
    color: var(--secondary);
    background: rgba(32, 214, 194, 0.08);
}
.mobile-drawer .drawer-cta {
    margin-top: 14px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ========== 页头横幅 ========== */
.page-hero {
    position: relative;
    padding: 160px 0 90px;
    min-height: 460px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(11, 15, 26, 0.85), rgba(11, 15, 26, 0.65)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11, 15, 26, 0.9) 0%, rgba(11, 15, 26, 0.5) 70%, rgba(11, 15, 26, 0.7) 100%);
    z-index: 1;
}
.page-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, var(--bg), transparent);
    z-index: 1;
}
.page-hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
    width: 100%;
}
.page-hero .hero-copy {
    max-width: 680px;
}
.page-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(46, 144, 250, 0.15);
    border: 1px solid rgba(46, 144, 250, 0.35);
    color: #6FB4FF;
    font-size: 13px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: var(--radius-badge);
    margin-bottom: 24px;
    backdrop-filter: blur(8px);
}
.page-hero .hero-badge .dot {
    width: 6px;
    height: 6px;
    background: var(--secondary);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(32, 214, 194, 0.8);
}
.page-hero h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    color: var(--text);
}
.page-hero h1 .hl {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.page-hero p.lead {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 560px;
}
.page-hero .hero-cta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.page-hero .hero-meta {
    display: flex;
    gap: 28px;
    margin-top: 42px;
    flex-wrap: wrap;
}
.page-hero .hero-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}
.page-hero .hero-meta .meta-item svg {
    width: 18px;
    height: 18px;
    stroke: var(--secondary);
}
.hero-stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 32px 28px;
    backdrop-filter: blur(14px);
    position: relative;
    overflow: hidden;
}
.hero-stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(32, 214, 194, 0.5), transparent);
}
.hero-stat-card .stat-number {
    font-size: 40px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
}
.hero-stat-card .stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}
.hero-stat-card .stat-divider {
    height: 1px;
    background: var(--border);
    margin: 20px 0;
    position: relative;
    overflow: hidden;
}
.hero-stat-card .stat-divider::after {
    content: '';
    position: absolute;
    top: 0;
    left: -30%;
    width: 30%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--secondary));
    animation: shimmer 3s ease infinite;
}
@keyframes shimmer {
    0% {
        left: -30%;
    }
    100% {
        left: 110%;
    }
}
.hero-stat-card .stat-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.hero-stat-card .stat-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text);
}
.hero-stat-card .stat-list li svg {
    width: 16px;
    height: 16px;
    stroke: var(--secondary);
    flex-shrink: 0;
}

/* ========== 板块标题 ========== */
.section-head {
    margin-bottom: 48px;
    max-width: 760px;
}
.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}
.section-head .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 14px;
}
.section-head .eyebrow::before {
    content: '';
    width: 18px;
    height: 2px;
    background: var(--secondary);
    border-radius: 2px;
    display: inline-block;
}
.section-head.center .eyebrow::after {
    content: '';
    width: 18px;
    height: 2px;
    background: var(--secondary);
    border-radius: 2px;
    display: inline-block;
}
.section-head h2 {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--text);
    margin-bottom: 14px;
}
.section-head p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 活动特色 ========== */
.feature-section {
    background: linear-gradient(180deg, rgba(46, 144, 250, 0.03), transparent);
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 32px 26px;
    backdrop-filter: blur(12px);
    transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-4px);
    background: var(--surface-hover);
    border-color: rgba(46, 144, 250, 0.4);
    box-shadow: var(--shadow-hover);
}
.feature-card:hover::before {
    opacity: 1;
}
.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(46, 144, 250, 0.15), rgba(32, 214, 194, 0.12));
    border: 1px solid rgba(46, 144, 250, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}
.feature-icon svg {
    width: 22px;
    height: 22px;
    stroke: var(--secondary);
}
.feature-card h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
}
.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 热门活动 ========== */
.hot-events {
    background: rgba(11, 15, 26, 0.5);
    position: relative;
}
.hot-events .container {
    position: relative;
    z-index: 1;
}
.events-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    align-items: start;
}
.event-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    overflow: hidden;
    backdrop-filter: blur(12px);
    transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}
.event-card.wide {
    grid-column: span 1;
    display: grid;
    grid-template-columns: 1fr 1.1fr;
}
.event-card:hover {
    transform: translateY(-5px);
    border-color: rgba(46, 144, 250, 0.4);
    background: var(--surface-hover);
    box-shadow: var(--shadow-hover);
}
.event-card .cover {
    position: relative;
    overflow: hidden;
    min-height: 220px;
    background: linear-gradient(135deg, #16233d, #0d1624);
}
.event-card.wide .cover {
    min-height: 280px;
}
.event-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    inset: 0;
    transition: transform 0.5s ease;
}
.event-card:hover .cover img {
    transform: scale(1.05);
}
.event-card .cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11, 15, 26, 0.7), transparent 40%);
}
.event-card .badge {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    background: rgba(11, 15, 26, 0.75);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text);
    font-size: 12px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: var(--radius-badge);
}
.event-card .badge.hot {
    background: rgba(245, 165, 36, 0.2);
    border-color: rgba(245, 165, 36, 0.4);
    color: var(--accent);
}
.event-card .event-body {
    padding: 26px 26px 28px;
}
.event-card.wide .event-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.event-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
    line-height: 1.4;
}
.event-card .desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.event-card .event-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--text-disabled);
    margin-bottom: 18px;
}
.event-card .event-meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.event-card .event-meta svg {
    width: 14px;
    height: 14px;
    stroke: var(--text-disabled);
}
.event-card .btn {
    width: auto;
}

/* ========== 参与流程 ========== */
.process-section {
    background: linear-gradient(180deg, transparent, rgba(32, 214, 194, 0.03));
}
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    counter-reset: step;
}
.process-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 32px 24px;
    text-align: center;
    position: relative;
    transition: transform 0.3s ease, border-color 0.3s ease;
}
.process-item:hover {
    transform: translateY(-4px);
    border-color: rgba(32, 214, 194, 0.35);
}
.process-item .step-num {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    box-shadow: 0 0 18px rgba(46, 144, 250, 0.3);
    font-variant-numeric: tabular-nums;
}
.process-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}
.process-item p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}
.process-arrow {
    position: absolute;
    right: -18px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    color: var(--secondary);
}
.process-arrow svg {
    width: 16px;
    height: 16px;
}

/* ========== 活动导览 ========== */
.guide-section {
    background: rgba(11, 15, 26, 0.4);
}
.guide-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.guide-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 30px 28px;
    backdrop-filter: blur(12px);
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
    position: relative;
    overflow: hidden;
}
.guide-card::after {
    content: '';
    position: absolute;
    bottom: -40px;
    right: -40px;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: rgba(46, 144, 250, 0.08);
    transition: transform 0.3s ease;
}
.guide-card:hover {
    transform: translateY(-4px);
    border-color: rgba(46, 144, 250, 0.4);
    background: var(--surface-hover);
    box-shadow: var(--shadow-hover);
}
.guide-card:hover::after {
    transform: scale(1.6);
}
.guide-card .guide-tag {
    display: inline-block;
    background: rgba(46, 144, 250, 0.12);
    border: 1px solid rgba(46, 144, 250, 0.25);
    color: #6FB4FF;
    font-size: 12px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: var(--radius-badge);
    margin-bottom: 16px;
}
.guide-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
}
.guide-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}
.guide-card .guide-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 18px;
    font-size: 14px;
    font-weight: 500;
    color: var(--secondary);
    position: relative;
    z-index: 1;
}
.guide-card .guide-link svg {
    width: 15px;
    height: 15px;
    transition: transform 0.2s ease;
}
.guide-card .guide-link:hover svg {
    transform: translateX(4px);
}

/* ========== 限时横幅 ========== */
.flash-banner {
    background: linear-gradient(135deg, rgba(46, 144, 250, 0.12), rgba(32, 214, 194, 0.06)), var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
    position: relative;
}
.flash-banner::before {
    content: '';
    position: absolute;
    top: -60%;
    left: 20%;
    width: 300px;
    height: 300px;
    background: rgba(245, 165, 36, 0.15);
    filter: blur(70px);
    animation: breathe 4s ease-in-out infinite;
    pointer-events: none;
}
@keyframes breathe {
    0%,
    100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}
.flash-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 44px 0;
    position: relative;
    z-index: 1;
}
.flash-copy h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 8px;
}
.flash-copy p {
    color: var(--text-secondary);
    font-size: 15px;
}
.flash-timer {
    display: flex;
    gap: 14px;
    align-items: center;
}
.timer-block {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(32, 214, 194, 0.3);
    border-radius: 12px;
    padding: 14px 18px;
    text-align: center;
    min-width: 66px;
    backdrop-filter: blur(8px);
}
.timer-block .num {
    font-size: 26px;
    font-weight: 700;
    color: var(--secondary);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
}
.timer-block .unit {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}
.flash-btn-wrap {
    display: flex;
    align-items: center;
}

/* ========== 站内互链 ========== */
.cross-links {
    background: transparent;
}
.cross-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.cross-card {
    border-radius: var(--radius-card);
    overflow: hidden;
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    backdrop-filter: blur(12px);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    display: block;
    min-height: 180px;
    padding: 28px;
    text-decoration: none !important;
}
.cross-card:hover {
    transform: translateY(-5px);
    border-color: rgba(46, 144, 250, 0.5);
    box-shadow: var(--shadow-hover);
}
.cross-card .cross-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(46, 144, 250, 0.12);
    border: 1px solid rgba(46, 144, 250, 0.22);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.cross-card .cross-icon svg {
    width: 18px;
    height: 18px;
    stroke: var(--secondary);
}
.cross-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}
.cross-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}
.cross-card .cross-arrow {
    font-size: 14px;
    color: var(--secondary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.cross-card .cross-arrow svg {
    width: 14px;
    height: 14px;
    transition: transform 0.2s ease;
}
.cross-card:hover .cross-arrow svg {
    transform: translateX(4px);
}

/* ========== FAQ ========== */
.faq-section {
    background: rgba(11, 15, 26, 0.4);
}
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: border-color 0.3s ease, background 0.3s ease;
    backdrop-filter: blur(10px);
}
.faq-item:hover {
    border-color: rgba(46, 144, 250, 0.25);
}
.faq-item.open {
    border-color: rgba(32, 214, 194, 0.3);
    background: rgba(255, 255, 255, 0.07);
}
.faq-question {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    cursor: pointer;
    user-select: none;
    transition: background 0.25s ease;
}
.faq-question .q-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(46, 144, 250, 0.15);
    border: 1px solid rgba(46, 144, 250, 0.25);
    color: var(--primary);
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.faq-question .q-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    flex: 1;
}
.faq-question .q-arrow {
    width: 20px;
    height: 20px;
    stroke: var(--text-secondary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}
.faq-item.open .q-arrow {
    transform: rotate(180deg);
    stroke: var(--secondary);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.faq-answer-inner {
    padding: 0 24px 22px 66px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========== CTA ========== */
.cta-section {
    padding: 0;
}
.cta-box {
    background: linear-gradient(135deg, rgba(46, 144, 250, 0.12), rgba(32, 214, 194, 0.07)), var(--surface);
    border: 1px solid rgba(46, 144, 250, 0.25);
    border-radius: 24px;
    padding: 60px 56px;
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(14px);
    margin-bottom: var(--spacer);
}
.cta-box::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -60px;
    width: 220px;
    height: 220px;
    background: rgba(46, 144, 250, 0.15);
    filter: blur(70px);
    border-radius: 50%;
}
.cta-box::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -50px;
    width: 200px;
    height: 200px;
    background: rgba(32, 214, 194, 0.12);
    filter: blur(70px);
    border-radius: 50%;
}
.cta-box h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
}
.cta-box p {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 32px;
    position: relative;
    z-index: 1;
}
.cta-box .cta-btns {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

/* ========== 页脚 ========== */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 64px;
    font-size: 14px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
}
.footer-brand .logo {
    margin-bottom: 14px;
}
.footer-brand p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    margin-top: 14px;
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 16px;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    color: var(--text-secondary);
    font-size: 14px;
    transition: color 0.2s ease;
}
.footer-col ul li a:hover {
    color: var(--secondary);
}
.footer-col ul li.contact-item {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-col ul li.contact-item svg {
    width: 15px;
    height: 15px;
    stroke: var(--text-disabled);
    flex-shrink: 0;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-disabled);
    font-size: 13px;
}
.footer-bottom a {
    color: var(--text-disabled);
}
.footer-bottom a:hover {
    color: var(--secondary);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .process-arrow {
        display: none;
    }
    .guide-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .cross-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .search-box {
        width: 180px;
    }
    .page-hero {
        padding: 140px 0 70px;
    }
    .page-hero .container {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .hero-stat-card {
        max-width: 480px;
    }
    .flash-inner {
        flex-direction: column;
        text-align: center;
    }
}
@media (max-width: 768px) {
    .site-header {
        height: 64px;
    }
    .header-inner {
        height: 64px;
        padding: 0 16px;
    }
    .main-nav {
        display: none;
    }
    .search-box {
        display: none;
    }
    .header-actions {
        margin-left: auto;
    }
    .header-actions .btn-primary {
        display: none;
    }
    .menu-toggle {
        display: inline-flex;
    }
    .page-hero {
        padding: 120px 0 56px;
        min-height: auto;
    }
    .page-hero h1 {
        font-size: 32px;
    }
    .page-hero p.lead {
        font-size: 16px;
    }
    .section-head h2 {
        font-size: 26px;
    }
    .event-card {
        grid-column: span 1 !important;
    }
    .event-card.wide {
        grid-template-columns: 1fr;
    }
    .events-grid {
        grid-template-columns: 1fr;
    }
    .cta-box {
        padding: 40px 28px;
        border-radius: 18px;
    }
    .cta-box h2 {
        font-size: 26px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .flash-timer {
        justify-content: center;
    }
}
@media (max-width: 520px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
    .process-grid {
        grid-template-columns: 1fr;
    }
    .guide-grid {
        grid-template-columns: 1fr;
    }
    .cross-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    .cta-box .cta-btns {
        flex-direction: column;
    }
    .cta-box .btn {
        width: 100%;
    }
    .flash-timer .timer-block {
        min-width: 56px;
        padding: 10px 12px;
    }
    .timer-block .num {
        font-size: 20px;
    }
}

/* roulang page: category3 */
:root {
  --bg-primary: #0B0F1A;
  --bg-surface: rgba(255,255,255,0.05);
  --bg-surface-hover: rgba(255,255,255,0.08);
  --border-color: rgba(255,255,255,0.08);
  --border-hover: rgba(46,144,250,0.6);
  --color-primary: #2E90FA;
  --color-secondary: #20D6C2;
  --color-accent: #F5A524;
  --text-primary: #E8EDF5;
  --text-secondary: #8DA0BF;
  --text-disabled: #54637A;
  --radius-card: 16px;
  --radius-btn: 8px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-card-hover: 0 16px 48px rgba(0,0,0,0.45);
  --gradient-primary: linear-gradient(135deg, #2E90FA 0%, #20D6C2 100%);
  --container-max: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(circle at 15% 20%, rgba(46,144,250,0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 70%, rgba(32,214,194,0.06) 0%, transparent 35%);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Header & Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(11,15,26,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(46,144,250,0.4);
}

.logo-icon svg {
  width: 18px;
  height: 18px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.main-nav a {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  position: relative;
  transition: color .2s ease, background .2s ease;
}

.main-nav a:hover {
  color: var(--color-primary);
  background: rgba(46,144,250,0.08);
}

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

.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 3px;
  border-radius: 3px;
  background: var(--color-secondary);
  box-shadow: 0 0 10px rgba(32,214,194,0.6);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 6px 12px;
  width: 220px;
  height: 38px;
  transition: border-color .2s ease;
}

.search-box:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(46,144,250,0.2);
}

.search-box svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: .6;
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 13px;
  width: 100%;
  color: var(--text-primary);
}

.search-box input::placeholder {
  color: var(--text-disabled);
}

.search-kbd {
  font-size: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.btn-nav {
  background: var(--gradient-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  padding: 8px 18px;
  white-space: nowrap;
  box-shadow: 0 0 20px rgba(46,144,250,0.35);
  transition: all .2s ease;
}

.btn-nav:hover {
  box-shadow: 0 0 28px rgba(46,144,250,0.5);
  filter: brightness(1.08);
  transform: translateY(-1px);
}

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

.btn-nav:focus-visible {
  outline: 3px solid rgba(46,144,250,0.5);
  outline-offset: 2px;
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  width: 40px;
  height: 38px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: border-color .2s ease;
}

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

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  margin: 3px 0;
  border-radius: 2px;
  transition: all .3s ease;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(11,15,26,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 24px;
  flex-direction: column;
  gap: 12px;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all .2s ease;
}

.mobile-menu a:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.mobile-menu a.active {
  color: var(--color-primary);
  background: rgba(46,144,250,0.1);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(rgba(11,15,26,0.72), rgba(11,15,26,0.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 72px;
  padding-bottom: 72px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(46,144,250,0.15);
  border: 1px solid rgba(46,144,250,0.35);
  color: var(--color-secondary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: .02em;
}

.hero h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.hero h1 span {
  background: linear-gradient(135deg, #6BB8FF, #20D6C2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 28px;
  line-height: 1.7;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  padding: 12px 28px;
  border: none;
  cursor: pointer;
  transition: all .25s ease;
}

.btn:focus-visible {
  outline: 3px solid rgba(46,144,250,0.5);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 0 24px rgba(46,144,250,0.4);
}

.btn-primary:hover {
  box-shadow: 0 0 32px rgba(46,144,250,0.55);
  filter: brightness(1.08);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-primary);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(46,144,250,0.5);
  transform: translateY(-2px);
}

.btn-ghost:active {
  transform: translateY(0);
}

.btn-accent {
  background: linear-gradient(135deg, #F5A524, #F7B955);
  color: #1A1D29;
  box-shadow: 0 0 20px rgba(245,165,36,0.35);
}

.btn-accent:hover {
  box-shadow: 0 0 30px rgba(245,165,36,0.5);
  filter: brightness(1.05);
  transform: translateY(-2px);
}

.btn-accent:active {
  transform: translateY(0);
}

.hero-trust {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.hero-trust span {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-trust svg {
  width: 16px;
  height: 16px;
  color: var(--color-secondary);
  flex-shrink: 0;
}

/* ===== Section ===== */
.section {
  padding: 88px 0;
}

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

.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-head h2::before {
  content: '';
  display: block;
  width: 28px;
  height: 4px;
  border-radius: 4px;
  background: var(--color-secondary);
  margin: 0 auto 14px;
  box-shadow: 0 0 10px rgba(32,214,194,0.5);
}

.section-head p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Features ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
  transition: all .3s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity .3s ease;
}

.feature-card:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(46,144,250,0.12);
  border: 1px solid rgba(46,144,250,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Tier / Deals ===== */
.tier-wrap {
  background: rgba(46,144,250,0.04);
  border: 1px solid rgba(46,144,250,0.1);
  border-radius: 20px;
  padding: 40px 32px;
  position: relative;
  overflow: hidden;
}

.tier-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.tier-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: end;
  position: relative;
  z-index: 1;
}

.tier-card {
  background: rgba(11,15,26,0.8);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 18px;
  padding: 32px 28px;
  position: relative;
  transition: all .3s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.tier-card.featured {
  border: 1px solid rgba(245,165,36,0.5);
  box-shadow: 0 8px 40px rgba(245,165,36,0.1);
  padding-bottom: 40px;
}

.tier-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card-hover);
}

.tier-card .tier-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #F5A524, #F7B955);
  color: #1A1D29;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 999px;
  white-space: nowrap;
}

.tier-card .tier-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.tier-card .tier-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.tier-card ul {
  margin-bottom: 24px;
}

.tier-card ul li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.5;
}

.tier-card ul li svg {
  width: 16px;
  height: 16px;
  color: var(--color-secondary);
  flex-shrink: 0;
}

.tier-card .btn {
  width: 100%;
}

/* ===== Steps ===== */
.steps-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  transition: all .3s ease;
}

.step-item:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.step-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-secondary);
  background: rgba(32,214,194,0.12);
  border: 1px solid rgba(32,214,194,0.3);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-variant-numeric: tabular-nums;
}

.step-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Scenario ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  border-radius: 18px;
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  transition: all .3s ease;
}

.scenario-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card-hover);
}

.scenario-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform .4s ease;
}

.scenario-card:hover img {
  transform: scale(1.03);
}

.scenario-card .scenario-body {
  padding: 24px;
}

.scenario-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.scenario-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Cross Links ===== */
.cross-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cross-link-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  transition: all .3s ease;
}

.cross-link-card:hover {
  background: var(--bg-surface-hover);
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.cross-link-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(46,144,250,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cross-link-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

.cross-link-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
}

.cross-link-card p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .3s ease;
}

.faq-item.active {
  border-color: rgba(46,144,250,0.4);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  transition: background .2s ease;
}

.faq-question:hover {
  background: rgba(255,255,255,0.03);
}

.faq-question:focus-visible {
  outline: 3px solid rgba(46,144,250,0.4);
  outline-offset: -2px;
  border-radius: 14px;
}

.faq-q-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(46,144,250,0.15);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.faq-arrow {
  margin-left: auto;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  transition: transform .3s ease;
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease, padding .3s ease;
  padding: 0 22px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 22px 20px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 14px;
}

/* ===== CTA ===== */
.cta-banner {
  background: linear-gradient(rgba(11,15,26,0.78), rgba(11,15,26,0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 72px 0;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245,165,36,0.12) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: breathe 4s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { opacity: .6; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 620px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-inner p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* ===== Footer ===== */
.site-footer {
  background: #070A12;
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 64px 0 0;
}

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

.footer-brand .logo {
  font-size: 20px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 280px;
}

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

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color .2s ease;
}

.footer-col ul li a:hover {
  color: var(--color-primary);
}

.footer-col ul li {
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-disabled);
}

.footer-bottom a {
  color: var(--text-secondary);
}

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

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

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

  .cross-links-grid {
    grid-template-columns: 1fr;
  }

  .search-box {
    width: 160px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .main-nav {
    display: none;
  }

  .search-box {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .tier-cards {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .tier-card {
    padding: 28px 24px;
  }

  .steps-wrap {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

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

  .hero {
    min-height: auto;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-inner {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .hero-trust {
    gap: 12px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

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

  .btn {
    padding: 10px 20px;
    font-size: 14px;
  }

  .hero-btns {
    flex-direction: column;
  }

  .hero-btns .btn {
    width: 100%;
  }

  .section-head p {
    font-size: 14px;
  }

  .feature-card {
    padding: 22px 20px;
  }

  .tier-wrap {
    padding: 28px 20px;
  }

  .cta-inner h2 {
    font-size: 23px;
  }
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root {
  --bg: #0B0F1A;
  --bg-deep: #070A12;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.08);
  --border-bright: rgba(46, 144, 250, 0.45);
  --primary: #2E90FA;
  --accent: #20D6C2;
  --amber: #F5A524;
  --text-main: #E8EDF5;
  --text-secondary: #8DA0BF;
  --text-muted: #54637A;
  --success: #28A67D;
  --error: #E5484D;
  --radius-card: 16px;
  --radius-btn: 8px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.45);
  --container: 1200px;
  --space-section: 96px;
  --nav-height: 72px;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
}

/* ============ 基础重置 ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at 20% 10%, rgba(46, 144, 250, 0.10), transparent 45%),
    radial-gradient(ellipse at 80% 60%, rgba(32, 214, 194, 0.06), transparent 40%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, transparent 40%, rgba(7, 10, 18, 0.7) 100%);
  pointer-events: none;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

a:hover,
a:focus-visible {
  color: var(--primary);
}

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

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ============ 通用按钮 ============ */
.btn-main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 0 18px rgba(46, 144, 250, 0.45), 0 4px 16px rgba(32, 214, 194, 0.18);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-main:hover {
  color: #fff;
  transform: translateY(-1px);
  filter: brightness(1.1);
  box-shadow: 0 0 26px rgba(46, 144, 250, 0.65), 0 6px 20px rgba(32, 214, 194, 0.25);
}

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

.btn-main:focus-visible {
  outline: 3px solid rgba(46, 144, 250, 0.5);
  outline-offset: 2px;
}

.btn-sm {
  height: 36px;
  padding: 0 18px;
  font-size: 14px;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(32, 214, 194, 0.06);
}

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

.btn-ghost:focus-visible {
  outline: 3px solid rgba(32, 214, 194, 0.4);
  outline-offset: 2px;
}

.btn-amber {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 700;
  color: #0B0F1A;
  background: linear-gradient(135deg, #F5A524, #FFC95E);
  box-shadow: 0 0 18px rgba(245, 165, 36, 0.4);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-amber:hover {
  color: #0B0F1A;
  transform: translateY(-1px);
  box-shadow: 0 0 28px rgba(245, 165, 36, 0.6);
  filter: brightness(1.05);
}

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

.btn-amber:focus-visible {
  outline: 3px solid rgba(245, 165, 36, 0.5);
  outline-offset: 2px;
}

/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(11, 15, 26, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-main);
  flex-shrink: 0;
}

.logo:hover {
  color: var(--text-main);
}

.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 4px 14px rgba(46, 144, 250, 0.4);
}

.logo-icon svg {
  width: 18px;
  height: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: var(--nav-height);
  padding: 0 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

.nav-links a.active {
  color: var(--text-main);
  font-weight: 600;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 18px;
  right: 18px;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  box-shadow: 0 0 12px rgba(32, 214, 194, 0.6);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 240px;
  height: 38px;
  padding: 0 12px;
  border-radius: var(--radius-btn);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(46, 144, 250, 0.3);
}

.search-box svg {
  width: 15px;
  height: 15px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-box input {
  flex: 1;
  min-width: 0;
  color: var(--text-main);
  font-size: 14px;
  background: transparent;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-kbd {
  font-size: 11px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 5px;
  padding: 2px 6px;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition: all 0.25s ease;
}

.nav-toggle:hover {
  border-color: var(--primary);
  background: rgba(46, 144, 250, 0.1);
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s ease;
}

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

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

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

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(11, 15, 26, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 24px 28px;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
}

.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu a {
  display: block;
  padding: 13px 12px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 10px;
  transition: all 0.2s ease;
}

.mobile-menu a.active {
  color: var(--accent);
  background: rgba(32, 214, 194, 0.08);
}

.mobile-menu a:hover {
  color: var(--primary);
  background: rgba(255, 255, 255, 0.04);
}

.mobile-menu .btn-main {
  margin-top: 16px;
  width: 100%;
}

/* ============ 分类 Hero ============ */
.category-hero {
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + 70px) 0 90px;
  overflow: hidden;
}

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

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 26, 0.78) 0%, rgba(11, 15, 26, 0.62) 50%, var(--bg) 100%);
}

.hero-overlay {
  display: none;
}

.category-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

.breadcrumb .sep {
  color: var(--text-muted);
}

.breadcrumb .current {
  color: var(--text-main);
}

.hero-eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(32, 214, 194, 0.1);
  border: 1px solid rgba(32, 214, 194, 0.3);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.category-hero h1 {
  font-size: 46px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  max-width: 760px;
  margin-bottom: 20px;
}

.category-hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.hero-trust span::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(32, 214, 194, 0.6);
}

/* ============ 攻略标签筛选 ============ */
.tag-filter {
  padding: 30px 0 10px;
}

.tag-filter .container {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-right: 4px;
}

.filter-tag {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-tag:hover {
  color: var(--accent);
  border-color: rgba(32, 214, 194, 0.4);
  background: rgba(32, 214, 194, 0.06);
}

.filter-tag.active {
  color: #0B0F1A;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-color: transparent;
  box-shadow: 0 0 14px rgba(46, 144, 250, 0.35);
}

/* ============ 板块通用 ============ */
.section {
  padding: var(--space-section) 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-main);
  position: relative;
  padding-left: 18px;
  line-height: 1.3;
}

.section-head h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  box-shadow: 0 0 12px rgba(32, 214, 194, 0.5);
}

.section-head p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
}

/* ============ 攻略卡片墙 ============ */
.guide-wall {
  padding: 70px 0 50px;
}

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

.guide-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-card);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: all 0.3s ease;
}

.guide-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 2;
}

.guide-card:hover {
  transform: translateY(-4px);
  background: var(--surface-hover);
  border-color: var(--border-bright);
  box-shadow: var(--shadow-hover);
}

.guide-card:hover::before {
  opacity: 1;
}

.guide-card:nth-child(even) {
  margin-top: 38px;
}

.card-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, #111827, #1f2937);
}

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

.guide-card:hover .card-cover img {
  transform: scale(1.04);
}

.card-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(11, 15, 26, 0.65) 100%);
  pointer-events: none;
}

.card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
  background: rgba(11, 15, 26, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
}

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

.card-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-main);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 16px;
}

.card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-meta .difficulty {
  color: var(--accent);
}

.guide-note {
  margin-top: 30px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ============ 攻略流程 ============ */
.guide-process {
  padding: 80px 0;
  position: relative;
}

.guide-process .section-head {
  justify-content: center;
  text-align: center;
}

.guide-process .section-head h2 {
  padding-left: 0;
}

.guide-process .section-head h2::before {
  display: none;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.process-item {
  padding: 36px 30px;
  border-radius: var(--radius-card);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.process-item:hover {
  border-color: rgba(32, 214, 194, 0.35);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.process-num {
  font-size: 42px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.9;
  line-height: 1;
  margin-bottom: 18px;
}

.process-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.process-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ============ 攻略 CTA ============ */
.guide-cta {
  margin: 30px 0 80px;
}

.guide-cta .inner {
  position: relative;
  border-radius: 24px;
  padding: 60px 56px;
  background: linear-gradient(135deg, rgba(46, 144, 250, 0.16), rgba(32, 214, 194, 0.10));
  border: 1px solid rgba(46, 144, 250, 0.25);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.guide-cta .inner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 165, 36, 0.25), transparent 70%);
  pointer-events: none;
}

.guide-cta h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}

.guide-cta p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 520px;
}

/* ============ FAQ ============ */
.faq-section {
  padding: 80px 0;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-radius: var(--radius-card);
  background: var(--surface);
  border: 1px solid var(--border);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.faq-item.open {
  border-color: rgba(32, 214, 194, 0.4);
  background: var(--surface-hover);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 22px 26px;
  cursor: pointer;
  text-align: left;
}

.faq-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(32, 214, 194, 0.1);
  border: 1px solid rgba(32, 214, 194, 0.3);
  flex-shrink: 0;
}

.faq-question h3 {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
}

.faq-arrow {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.faq-arrow svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-arrow svg {
  transform: rotate(180deg);
}

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

.faq-answer p {
  padding: 0 26px 24px 72px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ============ 站内互链 ============ */
.cross-links {
  padding: 40px 0 80px;
}

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

.cross-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 30px 28px;
  border-radius: var(--radius-card);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.cross-card:hover {
  transform: translateY(-4px);
  border-color: rgba(32, 214, 194, 0.4);
  background: var(--surface-hover);
  box-shadow: var(--shadow-hover);
}

.cross-card:hover .cross-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

.cross-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.cross-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.cross-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.cross-arrow svg {
  width: 16px;
  height: 16px;
}

/* ============ 底部 CTA ============ */
.cta-section {
  padding: 20px 0 90px;
}

.cta-card {
  position: relative;
  text-align: center;
  padding: 70px 48px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(46, 144, 250, 0.14), rgba(32, 214, 194, 0.08));
  border: 1px solid rgba(32, 214, 194, 0.2);
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(46, 144, 250, 0.13), transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(32, 214, 194, 0.11), transparent 40%);
  pointer-events: none;
}

.cta-card h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.cta-card p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 30px;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  font-size: 17px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a,
.footer-col ul li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
}

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

/* ============ 响应式 ============ */
@media (max-width: 1024px) {

  .nav-links {
    gap: 0;
  }

  .nav-links a {
    padding: 0 14px;
    font-size: 14px;
  }

  .search-box {
    width: 190px;
  }

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

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

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

@media (max-width: 768px) {

  :root {
    --space-section: 64px;
  }

  .nav-links {
    display: none;
  }

  .search-box {
    display: none;
  }

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

  .nav-actions .btn-main {
    display: none;
  }

  .mobile-menu {
    display: block;
  }

  .category-hero {
    min-height: 0;
    padding: calc(var(--nav-height) + 50px) 0 70px;
  }

  .category-hero h1 {
    font-size: 32px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-trust {
    gap: 16px;
  }

  .guide-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .guide-card:nth-child(even) {
    margin-top: 0;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 32px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .guide-cta .inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 28px;
  }

  .cta-card {
    padding: 50px 24px;
  }

  .cta-card h2 {
    font-size: 24px;
  }

  .faq-answer p {
    padding-left: 26px;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .process-item {
    padding: 28px 24px;
  }

  .guide-cta .inner {
    gap: 24px;
  }
}

@media (max-width: 520px) {

  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .category-hero h1 {
    font-size: 27px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn-main,
  .hero-actions .btn-ghost {
    width: 100%;
  }

  .hero-trust {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .tag-filter .container {
    gap: 8px;
  }

  .filter-tag {
    padding: 7px 14px;
    font-size: 12px;
  }

  .card-body {
    padding: 20px;
  }

  .card-body h3 {
    font-size: 17px;
  }

  .guide-cta .inner {
    padding: 32px 20px;
  }

  .guide-cta h2 {
    font-size: 21px;
  }

  .faq-question {
    padding: 18px 18px;
  }

  .faq-answer p {
    padding: 0 18px 18px 18px;
  }

  .cross-card {
    padding: 24px 20px;
  }

  .cta-card {
    padding: 42px 22px;
  }

  .cta-card p {
    font-size: 15px;
  }
}

/* ============ 焦点访问 ============ */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

a {
  -webkit-tap-highlight-color: transparent;
}

input:focus-visible {
  outline: none;
}