/* roulang page: index */
:root{--primary:#0f2b46;--primary-light:#1a4a6e;--primary-lighter:#2d6a96;--accent:#f59e0b;--accent-light:#fbbf24;--accent-dark:#d97706;--bg:#f7f9fc;--white:#fff;--text:#172b3a;--text-light:#5a7184;--text-lighter:#8ba3b5;--border:#e3ebf3;--success:#10b981;--radius:16px;--radius-sm:10px;--shadow:0 4px 20px rgba(15,43,70,.08);--shadow-lg:0 16px 48px rgba(15,43,70,.12);--transition:all .3s cubic-bezier(.25,.8,.25,1);--container:1200px;--header-h:72px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
button,input{font:inherit;border:none;outline:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-header{text-align:center;margin-bottom:48px;max-width:680px;margin-left:auto;margin-right:auto}
.section-tag{display:inline-block;padding:6px 18px;border-radius:50px;background:rgba(245,158,11,.1);color:var(--accent-dark);font-size:13px;font-weight:600;letter-spacing:1px;text-transform:uppercase;margin-bottom:12px}
.section-header h2{font-size:36px;font-weight:700;color:var(--text);line-height:1.3;margin-bottom:12px}
.section-header p{color:var(--text-light);font-size:16px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-weight:600;font-size:15px;cursor:pointer;transition:var(--transition);text-decoration:none;line-height:1;border:2px solid transparent}
.btn-primary{background:var(--accent);color:var(--primary);box-shadow:0 4px 15px rgba(245,158,11,.3)}
.btn-primary:hover{background:var(--accent-light);box-shadow:0 8px 25px rgba(245,158,11,.4);transform:translateY(-2px)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-outline-dark{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline-dark:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.badge{display:inline-block;padding:4px 14px;border-radius:30px;font-size:12px;font-weight:600;background:rgba(15,43,70,.08);color:var(--primary);letter-spacing:.5px}
.badge-accent{background:rgba(245,158,11,.12);color:var(--accent-dark)}
/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(227,235,243,.8);transition:var(--transition)}
.site-header.scrolled{box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{font-size:24px;font-weight:800;color:var(--primary);letter-spacing:-.5px;display:flex;align-items:center;gap:8px}
.logo i{color:var(--accent);font-size:20px}
.main-nav{display:flex;align-items:center;gap:8px}
.main-nav .nav-link{padding:10px 20px;border-radius:30px;font-size:15px;font-weight:500;color:var(--text-light);position:relative;transition:var(--transition)}
.main-nav .nav-link:hover{color:var(--primary);background:rgba(15,43,70,.06)}
.main-nav .nav-link.active{background:var(--primary);color:#fff;font-weight:600}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:transparent;cursor:pointer;padding:8px;border-radius:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:4px;transition:var(--transition)}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* Hero */
.hero{position:relative;padding:160px 0 100px;background:linear-gradient(135deg,rgba(15,43,70,.93) 0%,rgba(26,74,110,.88) 60%,rgba(45,106,150,.82) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;overflow:hidden}
.hero::before{content:'';position:absolute;top:-60%;right:-20%;width:600px;height:600px;border-radius:50%;background:rgba(245,158,11,.12);filter:blur(80px)}
.hero::after{content:'';position:absolute;bottom:-30%;left:10%;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.06);filter:blur(60px)}
.hero-inner{position:relative;z-index:2;max-width:760px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;border-radius:50px;background:rgba(255,255,255,.12);backdrop-filter:blur(8px);font-size:14px;font-weight:500;margin-bottom:24px;border:1px solid rgba(255,255,255,.2)}
.hero-tag i{color:var(--accent)}
.hero h1{font-size:56px;font-weight:800;line-height:1.2;margin-bottom:20px;letter-spacing:-1px}
.hero h1 span{color:var(--accent)}
.hero p{font-size:18px;color:rgba(255,255,255,.85);margin-bottom:36px;max-width:620px;line-height:1.8}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-wave{position:absolute;bottom:-1px;left:0;right:0;z-index:3}
/* Features */
.features-section{background:var(--white)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:36px 30px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-light));opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card:hover::before{opacity:1}
.feature-icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:22px;background:linear-gradient(135deg,rgba(15,43,70,.1),rgba(45,106,150,.1));color:var(--primary)}
.feature-card:nth-child(2) .feature-icon{background:linear-gradient(135deg,rgba(245,158,11,.15),rgba(251,191,36,.15));color:var(--accent-dark)}
.feature-card:nth-child(3) .feature-icon{background:linear-gradient(135deg,rgba(16,185,129,.12),rgba(16,185,129,.05));color:#0d9668}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.feature-card p{color:var(--text-light);font-size:15px;line-height:1.7}
/* Category entry */
.category-entry{padding:80px 0;background:linear-gradient(180deg,var(--bg) 0%,#eef3f8 100%)}
.category-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.category-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.category-media img{width:100%;height:380px;object-fit:cover;transition:transform .6s ease}
.category-media:hover img{transform:scale(1.04)}
.category-media::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(15,43,70,.4),transparent 50%)}
.category-info h2{font-size:36px;font-weight:700;margin-bottom:16px;line-height:1.3}
.category-info p{color:var(--text-light);font-size:16px;line-height:1.8;margin-bottom:24px}
.category-points{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:28px}
.category-point{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text)}
.category-point i{color:var(--accent-dark);font-size:14px;background:rgba(245,158,11,.12);width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center}
/* News */
.news-section{background:var(--white)}
.news-list{display:flex;flex-direction:column;gap:20px;max-width:920px;margin:0 auto}
.news-card{display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px 28px;transition:var(--transition)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent;background:#fff}
.news-card-content{flex:1;min-width:0}
.news-card-content .badge{margin-bottom:8px}
.news-card-content h3{font-size:18px;font-weight:600;margin:8px 0 6px;color:var(--text);transition:var(--transition);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-card-content h3{color:var(--primary-light)}
.news-card-content p{color:var(--text-light);font-size:14px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-meta{display:flex;align-items:center;gap:16px;flex-shrink:0}
.news-time{font-size:13px;color:var(--text-lighter);white-space:nowrap}
.news-arrow{width:36px;height:36px;border-radius:50%;background:var(--white);display:flex;align-items:center;justify-content:center;color:var(--primary);box-shadow:var(--shadow);font-size:14px;transition:var(--transition)}
.news-card:hover .news-arrow{background:var(--accent);color:var(--primary);transform:translateX(4px)}
.empty-tip{text-align:center;padding:48px;color:var(--text-light);background:var(--bg);border-radius:var(--radius);border:2px dashed var(--border);font-size:15px}
/* Stats */
.stats-section{position:relative;background:linear-gradient(135deg,rgba(15,43,70,.97),rgba(26,74,110,.94)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;padding:80px 0;color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;text-align:center}
.stat-item .stat-num{font-size:48px;font-weight:800;color:var(--accent);line-height:1.2;margin-bottom:8px}
.stat-item .stat-label{font-size:15px;color:rgba(255,255,255,.8);letter-spacing:1px}
/* Steps */
.steps-section{background:var(--bg)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;counter-reset:step}
.step-card{background:var(--white);border-radius:var(--radius);padding:36px 28px;text-align:center;border:1px solid var(--border);position:relative;transition:var(--transition)}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.step-num{width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;font-size:22px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;position:relative;box-shadow:0 8px 20px rgba(15,43,70,.25)}
.step-num::after{content:'';position:absolute;inset:-6px;border-radius:50%;border:2px dashed rgba(15,43,70,.2);animation:spin 20s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.step-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step-card p{font-size:14px;color:var(--text-light);line-height:1.6}
/* FAQ */
.faq-section{background:var(--white)}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;transition:var(--transition)}
.faq-item.active{border-color:var(--accent);box-shadow:0 4px 15px rgba(245,158,11,.1)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);transition:var(--transition)}
.faq-question i{font-size:14px;color:var(--text-lighter);transition:var(--transition)}
.faq-item.active .faq-question i{transform:rotate(45deg);color:var(--accent-dark)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px;color:var(--text-light);font-size:15px;line-height:1.8}
.faq-item.active .faq-answer{max-height:300px;padding-bottom:20px}
/* CTA */
.cta-section{position:relative;background:linear-gradient(135deg,rgba(245,158,11,.95),rgba(251,191,36,.9)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;padding:80px 0;text-align:center;color:var(--primary)}
.cta-section h2{font-size:36px;font-weight:800;margin-bottom:12px}
.cta-section p{font-size:17px;margin-bottom:32px;opacity:.85}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-section .btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 15px rgba(15,43,70,.3)}
.cta-section .btn-primary:hover{background:var(--primary-light)}
.cta-section .btn-outline-dark{border-color:var(--primary);color:var(--primary)}
.cta-section .btn-outline-dark:hover{background:var(--primary);color:#fff}
/* Footer */
.site-footer{background:#0a1f33;color:rgba(255,255,255,.7);padding:60px 0 0}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-logo{font-size:26px;font-weight:800;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.footer-logo i{color:var(--accent)}
.footer-brand p{font-size:15px;line-height:1.7;max-width:300px}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.65);transition:var(--transition)}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);margin-bottom:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:14px;color:rgba(255,255,255,.45)}
/* Responsive */
@media(max-width:1024px){.hero h1{font-size:44px}.features-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:1fr}.category-media img{height:300px}.stats-grid{grid-template-columns:repeat(2,1fr)}.steps-grid{grid-template-columns:repeat(2,1fr)}.footer-inner{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.main-nav{position:fixed;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;padding:20px;box-shadow:var(--shadow-lg);transform:translateY(-150%);transition:transform .4s ease;border-radius:0 0 20px 20px}.main-nav.open{transform:translateY(0)}.main-nav .nav-link{width:100%;text-align:center}.nav-toggle{display:flex}.hero{padding:130px 0 80px}.hero h1{font-size:34px}.hero p{font-size:16px}.section{padding:60px 0}.section-header h2{font-size:28px}.features-grid{grid-template-columns:1fr}.news-card{flex-direction:column;align-items:flex-start}.news-card-meta{width:100%;justify-content:space-between}.footer-inner{grid-template-columns:1fr}}
@media(max-width:520px){.hero h1{font-size:28px}.hero-btns{flex-direction:column;align-items:stretch}.hero-btns .btn{justify-content:center}.stats-grid{grid-template-columns:1fr 1fr;gap:24px}.stat-item .stat-num{font-size:36px}.steps-grid{grid-template-columns:1fr}.category-points{grid-template-columns:1fr}.cta-section h2{font-size:28px}}

:root{--primary:#0f2b46;--primary-light:#1a4a6e;--primary-lighter:#2d6a96;--accent:#f59e0b;--accent-light:#fbbf24;--accent-dark:#d97706;--bg:#f7f9fc;--white:#fff;--text:#172b3a;--text-light:#5a7184;--text-lighter:#8ba3b5;--border:#e3ebf3;--success:#10b981;--radius:16px;--radius-sm:10px;--shadow:0 4px 20px rgba(15,43,70,.08);--shadow-lg:0 16px 48px rgba(15,43,70,.12);--transition:all .3s cubic-bezier(.25,.8,.25,1);--container:1200px;--header-h:72px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
button,input{font:inherit;border:none;outline:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-header{text-align:center;margin-bottom:48px;max-width:680px;margin-left:auto;margin-right:auto}
.section-tag{display:inline-block;padding:6px 18px;border-radius:50px;background:rgba(245,158,11,.1);color:var(--accent-dark);font-size:13px;font-weight:600;letter-spacing:1px;text-transform:uppercase;margin-bottom:12px}
.section-header h2{font-size:32px;font-weight:700;color:var(--text);line-height:1.3;margin-bottom:10px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-weight:600;font-size:15px;cursor:pointer;transition:var(--transition);text-decoration:none;line-height:1;border:2px solid transparent}
.btn-primary{background:var(--accent);color:var(--primary);box-shadow:0 4px 15px rgba(245,158,11,.3)}
.btn-primary:hover{background:var(--accent-light);transform:translateY(-2px)}
.btn-outline-dark{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline-dark:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.badge{display:inline-block;padding:4px 14px;border-radius:30px;font-size:12px;font-weight:600;background:rgba(15,43,70,.08);color:var(--primary);letter-spacing:.5px}
.badge-accent{background:rgba(245,158,11,.12);color:var(--accent-dark)}
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(227,235,243,.8);transition:var(--transition)}
.site-header.scrolled{box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{font-size:24px;font-weight:800;color:var(--primary);letter-spacing:-.5px;display:flex;align-items:center;gap:8px}
.logo i{color:var(--accent);font-size:20px}
.main-nav{display:flex;align-items:center;gap:8px}
.main-nav .nav-link{padding:10px 20px;border-radius:30px;font-size:15px;font-weight:500;color:var(--text-light);transition:var(--transition)}
.main-nav .nav-link:hover{color:var(--primary);background:rgba(15,43,70,.06)}
.main-nav .nav-link.active{background:var(--primary);color:#fff;font-weight:600}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:transparent;cursor:pointer;padding:8px;border-radius:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:4px;transition:var(--transition)}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.article-hero{position:relative;padding:140px 0 60px;background:linear-gradient(135deg,rgba(15,43,70,.95),rgba(26,74,110,.88)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff}
.article-hero-inner{max-width:860px}
.article-hero .badge{background:rgba(245,158,11,.2);color:var(--accent-light)}
.article-hero h1{font-size:40px;font-weight:800;line-height:1.3;margin:16px 0 12px}
.article-hero .article-meta{display:flex;align-items:center;gap:20px;color:rgba(255,255,255,.75);font-size:14px;flex-wrap:wrap}
.article-hero .article-meta i{margin-right:6px}
.article-main{background:var(--bg)}
.article-body-wrap{max-width:860px;margin:0 auto;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:48px;margin-top:-30px;position:relative}
.article-content{font-size:16px;line-height:2;color:var(--text)}
.article-content p{margin-bottom:24px}
.article-content h2{font-size:26px;margin:36px 0 16px;color:var(--primary)}
.article-content h3{font-size:20px;margin:28px 0 12px;color:var(--primary)}
.article-content img{border-radius:var(--radius-sm);margin:24px 0}
.article-content blockquote{border-left:4px solid var(--accent);background:rgba(245,158,11,.06);padding:16px 24px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:24px 0;color:var(--text-light)}
.article-content ul{padding-left:24px;margin-bottom:24px;list-style:disc}
.article-content ul li{margin-bottom:8px}
.article-notfound{text-align:center;padding:60px 0}
.article-notfound i{font-size:48px;color:var(--text-lighter);margin-bottom:20px}
.article-notfound h2{font-size:28px;margin-bottom:12px}
.article-notfound p{color:var(--text-light);margin-bottom:28px}
.related-section{background:var(--white)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:var(--transition)}
.related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);background:#fff}
.related-card h3{font-size:16px;font-weight:600;margin:10px 0 8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card p{font-size:14px;color:var(--text-light);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .news-time{font-size:12px;color:var(--text-lighter)}
.cta-section{position:relative;background:linear-gradient(135deg,rgba(245,158,11,.95),rgba(251,191,36,.9)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;padding:70px 0;text-align:center;color:var(--primary)}
.cta-section h2{font-size:34px;font-weight:800;margin-bottom:12px}
.cta-section p{font-size:17px;margin-bottom:28px;opacity:.85}
.cta-section .btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 15px rgba(15,43,70,.3)}
.cta-section .btn-primary:hover{background:var(--primary-light)}
.site-footer{background:#0a1f33;color:rgba(255,255,255,.7);padding:60px 0 0}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-logo{font-size:26px;font-weight:800;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.footer-logo i{color:var(--accent)}
.footer-brand p{font-size:15px;line-height:1.7;max-width:300px}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.65);transition:var(--transition)}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);margin-bottom:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:14px;color:rgba(255,255,255,.45)}
@media(max-width:1024px){.related-grid{grid-template-columns:repeat(2,1fr)}.footer-inner{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.main-nav{position:fixed;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;padding:20px;box-shadow:var(--shadow-lg);transform:translateY(-150%);transition:transform .4s ease;border-radius:0 0 20px 20px}.main-nav.open{transform:translateY(0)}.main-nav .nav-link{width:100%;text-align:center}.nav-toggle{display:flex}.article-hero{padding:120px 0 50px}.article-hero h1{font-size:30px}.article-body-wrap{padding:28px;margin-top:-20px}.section{padding:60px 0}.section-header h2{font-size:28px}.footer-inner{grid-template-columns:1fr}}
@media(max-width:520px){.article-hero h1{font-size:24px}.article-meta{flex-direction:column;align-items:flex-start;gap:8px}.related-grid{grid-template-columns:1fr}.cta-section h2{font-size:26px}}

:root{--primary:#0f2b46;--primary-light:#1a4a6e;--primary-lighter:#2d6a96;--accent:#f59e0b;--accent-light:#fbbf24;--accent-dark:#d97706;--bg:#f7f9fc;--white:#fff;--text:#172b3a;--text-light:#5a7184;--text-lighter:#8ba3b5;--border:#e3ebf3;--success:#10b981;--radius:16px;--radius-sm:10px;--shadow:0 4px 20px rgba(15,43,70,.08);--shadow-lg:0 16px 48px rgba(15,43,70,.12);--transition:all .3s cubic-bezier(.25,.8,.25,1);--container:1200px;--header-h:72px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
button,input{font:inherit;border:none;outline:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-header{text-align:center;margin-bottom:48px;max-width:680px;margin-left:auto;margin-right:auto}
.section-tag{display:inline-block;padding:6px 18px;border-radius:50px;background:rgba(245,158,11,.1);color:var(--accent-dark);font-size:13px;font-weight:600;letter-spacing:1px;text-transform:uppercase;margin-bottom:12px}
.section-header h2{font-size:34px;font-weight:700;color:var(--text);line-height:1.3;margin-bottom:12px}
.section-header p{color:var(--text-light);font-size:16px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-weight:600;font-size:15px;cursor:pointer;transition:var(--transition);text-decoration:none;line-height:1;border:2px solid transparent}
.btn-primary{background:var(--accent);color:var(--primary);box-shadow:0 4px 15px rgba(245,158,11,.3)}
.btn-primary:hover{background:var(--accent-light);transform:translateY(-2px)}
.btn-outline-dark{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline-dark:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.badge{display:inline-block;padding:4px 14px;border-radius:30px;font-size:12px;font-weight:600;background:rgba(15,43,70,.08);color:var(--primary);letter-spacing:.5px}
.badge-accent{background:rgba(245,158,11,.12);color:var(--accent-dark)}
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(227,235,243,.8);transition:var(--transition)}
.site-header.scrolled{box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{font-size:24px;font-weight:800;color:var(--primary);letter-spacing:-.5px;display:flex;align-items:center;gap:8px}
.logo i{color:var(--accent);font-size:20px}
.main-nav{display:flex;align-items:center;gap:8px}
.main-nav .nav-link{padding:10px 20px;border-radius:30px;font-size:15px;font-weight:500;color:var(--text-light);transition:var(--transition)}
.main-nav .nav-link:hover{color:var(--primary);background:rgba(15,43,70,.06)}
.main-nav .nav-link.active{background:var(--primary);color:#fff;font-weight:600}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:transparent;cursor:pointer;padding:8px;border-radius:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:4px;transition:var(--transition)}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* Cat hero */
.cat-hero{position:relative;padding:150px 0 90px;background:linear-gradient(135deg,rgba(15,43,70,.96),rgba(26,74,110,.9)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff;text-align:center}
.cat-hero-inner{max-width:760px;margin:0 auto}
.cat-hero .hero-tag{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;border-radius:50px;background:rgba(255,255,255,.12);backdrop-filter:blur(8px);font-size:14px;font-weight:500;margin-bottom:20px;border:1px solid rgba(255,255,255,.2)}
.cat-hero h1{font-size:46px;font-weight:800;line-height:1.2;margin-bottom:16px}
.cat-hero h1 span{color:var(--accent)}
.cat-hero p{font-size:18px;color:rgba(255,255,255,.85);line-height:1.8;max-width:640px;margin:0 auto}
/* Cat intro */
.cat-intro{background:var(--white)}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.intro-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.intro-media img{width:100%;height:340px;object-fit:cover;transition:transform .6s ease}
.intro-media:hover img{transform:scale(1.04)}
.intro-content h2{font-size:32px;font-weight:700;margin-bottom:16px;line-height:1.3}
.intro-content p{color:var(--text-light);line-height:1.8;margin-bottom:20px}
.intro-content ul li{display:flex;align-items:center;gap:10px;padding:6px 0;font-size:15px}
.intro-content ul li i{color:var(--accent-dark);background:rgba(245,158,11,.12);width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px}
/* Guides grid */
.guides-section{background:var(--bg)}
.guides-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.guide-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;text-align:center;transition:var(--transition)}
.guide-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.guide-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;margin:0 auto 16px;background:linear-gradient(135deg,rgba(15,43,70,.08),rgba(45,106,150,.08));color:var(--primary)}
.guide-card:nth-child(2) .guide-icon{background:linear-gradient(135deg,rgba(245,158,11,.15),rgba(251,191,36,.1));color:var(--accent-dark)}
.guide-card:nth-child(3) .guide-icon{background:linear-gradient(135deg,rgba(16,185,129,.12),rgba(16,185,129,.05));color:#0d9668}
.guide-card:nth-child(4) .guide-icon{background:linear-gradient(135deg,rgba(99,102,241,.1),rgba(99,102,241,.05));color:#6366f1}
.guide-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.guide-card p{font-size:14px;color:var(--text-light);line-height:1.6}
/* Steps */
.steps-section{background:linear-gradient(180deg,var(--bg),#eef3f8)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.step-card{background:var(--white);border-radius:var(--radius);padding:32px 24px;text-align:center;border:1px solid var(--border);position:relative;transition:var(--transition)}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.step-num{width:52px;height:52px;border-radius:50%;background:var(--primary);color:#fff;font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;box-shadow:0 8px 20px rgba(15,43,70,.25)}
.step-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--text-light);line-height:1.6}
/* Cat list */
.cat-list-section{background:var(--white)}
.cat-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:20px}
.cat-list-card{display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px 26px;transition:var(--transition)}
.cat-list-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);background:#fff}
.cat-list-content{flex:1;min-width:0}
.cat-list-content h3{font-size:18px;font-weight:600;margin:6px 0;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.cat-list-content p{font-size:14px;color:var(--text-light);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cat-list-meta{display:flex;align-items:center;gap:12px;flex-shrink:0}
.cat-list-meta .news-time{font-size:13px;color:var(--text-lighter)}
.cat-arrow{width:32px;height:32px;border-radius:50%;background:var(--white);display:flex;align-items:center;justify-content:center;color:var(--primary);box-shadow:var(--shadow);font-size:13px;transition:var(--transition)}
.cat-list-card:hover .cat-arrow{background:var(--accent);color:var(--primary);transform:translateX(4px)}
.empty-tip{text-align:center;padding:48px;color:var(--text-light);background:var(--bg);border-radius:var(--radius);border:2px dashed var(--border);font-size:15px}
/* FAQ */
.faq-section{background:var(--bg)}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;transition:var(--transition)}
.faq-item.active{border-color:var(--accent);box-shadow:0 4px 15px rgba(245,158,11,.1)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;color:var(--text)}
.faq-question i{font-size:14px;color:var(--text-lighter);transition:var(--transition)}
.faq-item.active .faq-question i{transform:rotate(45deg);color:var(--accent-dark)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px;color:var(--text-light);font-size:15px;line-height:1.8}
.faq-item.active .faq-answer{max-height:300px;padding-bottom:20px}
/* CTA */
.cta-section{position:relative;background:linear-gradient(135deg,rgba(245,158,11,.95),rgba(251,191,36,.9)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;padding:70px 0;text-align:center;color:var(--primary)}
.cta-section h2{font-size:34px;font-weight:800;margin-bottom:12px}
.cta-section p{font-size:17px;margin-bottom:28px;opacity:.85}
.cta-section .btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 15px rgba(15,43,70,.3)}
.cta-section .btn-primary:hover{background:var(--primary-light)}
/* Footer */
.site-footer{background:#0a1f33;color:rgba(255,255,255,.7);padding:60px 0 0}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-logo{font-size:26px;font-weight:800;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.footer-logo i{color:var(--accent)}
.footer-brand p{font-size:15px;line-height:1.7;max-width:300px}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.65);transition:var(--transition)}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);margin-bottom:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:14px;color:rgba(255,255,255,.45)}
/* Responsive */
@media(max-width:1024px){.guides-grid{grid-template-columns:repeat(2,1fr)}.steps-grid{grid-template-columns:repeat(2,1fr)}.intro-grid{grid-template-columns:1fr}.intro-media img{height:280px}.footer-inner{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.main-nav{position:fixed;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;padding:20px;box-shadow:var(--shadow-lg);transform:translateY(-150%);transition:transform .4s ease;border-radius:0 0 20px 20px}.main-nav.open{transform:translateY(0)}.main-nav .nav-link{width:100%;text-align:center}.nav-toggle{display:flex}.cat-hero{padding:130px 0 70px}.cat-hero h1{font-size:34px}.cat-hero p{font-size:16px}.section{padding:60px 0}.section-header h2{font-size:28px}.cat-list-card{flex-direction:column;align-items:flex-start}.cat-list-meta{width:100%;justify-content:space-between}.footer-inner{grid-template-columns:1fr}}
@media(max-width:520px){.cat-hero h1{font-size:28px}.guides-grid{grid-template-columns:1fr}.steps-grid{grid-template-columns:1fr}.cta-section h2{font-size:26px}}

/* roulang page: article */
:root {
  --primary: #0a2e52;
  --primary-light: #144a7d;
  --primary-deep: #071e36;
  --accent: #f5a623;
  --accent-dark: #dd8f0a;
  --accent-soft: #fff4df;
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #172a3a;
  --text-light: #5c6e80;
  --text-weak: #8a9bad;
  --border: #e3e8ef;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-sm: 8px;
  --shadow: 0 6px 24px rgba(10, 46, 82, 0.07);
  --shadow-hover: 0 14px 36px rgba(10, 46, 82, 0.14);
  --shadow-accent: 0 8px 24px rgba(245, 166, 35, 0.25);
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 74px;
  --content-w: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.72; font-size: 16px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-dark); }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { line-height: 1.28; font-weight: 700; color: var(--text); }
.container { width: 100%; max-width: var(--content-w); margin: 0 auto; padding: 0 24px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border: 0; border-radius: 999px; cursor: pointer;
  font-size: 15px; font-weight: 600; line-height: 1; letter-spacing: 0.3px;
  transition: all var(--transition); text-align: center; white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn:focus-visible { outline: 3px solid rgba(245, 166, 35, 0.5); outline-offset: 3px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(10, 46, 82, 0.22); }
.btn-primary:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(10, 46, 82, 0.28); }
.btn-primary:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: var(--primary-deep); box-shadow: var(--shadow-accent); }
.btn-accent:hover { background: var(--accent-dark); color: var(--primary-deep); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(245, 166, 35, 0.35); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary); box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12); }
.btn-light:hover { background: var(--accent); color: var(--primary-deep); transform: translateY(-2px); }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-sm { padding: 8px 18px; font-size: 13px; }

.tag {
  display: inline-block; padding: 5px 14px; margin: 3px 4px 3px 0;
  background: var(--accent-soft); color: #9a6a12; border-radius: 999px;
  font-size: 13px; font-weight: 500; border: 1px solid #fde2b6;
  transition: all var(--transition);
}
.tag:hover { background: var(--accent); color: var(--primary-deep); border-color: var(--accent); }
.category-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--accent); color: var(--primary-deep);
  padding: 6px 16px; border-radius: 999px; font-size: 13px; font-weight: 700;
  letter-spacing: 0.4px; box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
}
.card { background: var(--card); border-radius: var(--radius-lg); box-shadow: var(--shadow); border: 1px solid rgba(227, 232, 239, 0.7); }
.section-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 700; letter-spacing: 1.5px;
  color: var(--accent-dark); text-transform: uppercase; margin-bottom: 8px;
}
.section-tag::before { content: ""; width: 26px; height: 3px; background: var(--accent); border-radius: 3px; }

.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(10, 46, 82, 0.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 22px; font-weight: 800; color: var(--primary); letter-spacing: 0.3px;
}
.logo i {
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; border-radius: 12px; font-size: 16px;
  box-shadow: 0 6px 14px rgba(10, 46, 82, 0.28);
}
.logo:hover { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav .nav-link {
  padding: 9px 20px; border-radius: 999px; font-size: 15px; font-weight: 500;
  color: var(--text-light); transition: all var(--transition); position: relative;
}
.main-nav .nav-link:hover { color: var(--primary); background: rgba(10, 46, 82, 0.05); }
.main-nav .nav-link.active { background: var(--primary); color: #fff; font-weight: 600; box-shadow: 0 4px 14px rgba(10, 46, 82, 0.22); }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; background: transparent; border: 1px solid var(--border); border-radius: 10px; cursor: pointer; padding: 0 10px; }
.nav-toggle span { display: block; height: 2px; background: var(--primary); border-radius: 2px; transition: all var(--transition); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.article-hero { position: relative; padding: 70px 0 90px; background-size: cover; background-position: center; }
.article-hero .hero-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(7, 30, 54, 0.92) 0%, rgba(10, 46, 82, 0.78) 50%, rgba(20, 74, 125, 0.55) 100%); }
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-bottom: 28px; }
.breadcrumb a { color: rgba(255, 255, 255, 0.82); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .breadcrumb-current { color: var(--accent); font-weight: 600; }
.article-hero-content { max-width: 800px; }
.article-hero-content .category-badge { margin-bottom: 20px; }
.article-title { font-size: 38px; font-weight: 800; color: #fff; line-height: 1.25; margin: 16px 0 22px; letter-spacing: 0.5px; text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2); }
.article-meta { display: flex; flex-wrap: wrap; gap: 22px; color: rgba(255, 255, 255, 0.82); font-size: 14px; }
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta i { color: var(--accent); }

.article-section { padding: 60px 0 90px; margin-top: -40px; position: relative; z-index: 5; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 34px; align-items: start; }
.article-main { padding: 40px 46px; }
.article-content { font-size: 16px; color: #2d3f4f; line-height: 1.9; }
.article-content > * { margin-bottom: 18px; }
.article-content h2 { font-size: 24px; color: var(--primary); margin: 34px 0 16px; padding-left: 14px; border-left: 4px solid var(--accent); }
.article-content h3 { font-size: 20px; color: var(--primary); margin: 28px 0 12px; }
.article-content h4 { font-size: 17px; color: var(--text); margin: 22px 0 10px; }
.article-content p { color: #334455; }
.article-content a { color: var(--accent-dark); font-weight: 500; text-decoration: underline; text-underline-offset: 3px; }
.article-content ul, .article-content ol { padding-left: 24px; margin: 16px 0; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 8px; line-height: 1.8; }
.article-content img { border-radius: var(--radius); box-shadow: var(--shadow); margin: 20px 0; }
.article-content blockquote {
  background: var(--accent-soft); border-left: 4px solid var(--accent);
  padding: 18px 22px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #7a5c1e; font-style: italic; margin: 22px 0;
}
.article-content blockquote p { color: inherit; margin-bottom: 0; }
.article-content table { width: 100%; border-collapse: collapse; margin: 22px 0; font-size: 14px; border-radius: var(--radius-sm); overflow: hidden; }
.article-content table th, .article-content table td { padding: 12px 16px; border: 1px solid var(--border); text-align: left; }
.article-content table th { background: var(--primary); color: #fff; font-weight: 600; }
.article-content table tr:nth-child(even) td { background: #f8fafc; }
.article-content code { background: #eef2f7; padding: 2px 8px; border-radius: 5px; font-size: 14px; color: var(--primary-light); }
.article-content pre { background: var(--primary-deep); color: #dce6f1; padding: 20px; border-radius: var(--radius); overflow-x: auto; font-size: 14px; line-height: 1.7; margin: 22px 0; }
.article-content pre code { background: transparent; padding: 0; color: inherit; }

.article-footer-tags { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.article-footer-tags .tag-label { font-size: 14px; font-weight: 600; color: var(--text-light); margin-right: 4px; }
.article-footer-tags .tag { margin: 0; }

.article-empty { text-align: center; padding: 80px 20px; }
.article-empty i { font-size: 52px; color: #cbd5e1; margin-bottom: 20px; display: block; }
.article-empty h2 { font-size: 26px; color: var(--text); margin-bottom: 12px; }
.article-empty p { color: var(--text-light); margin-bottom: 28px; }

.article-side { display: flex; flex-direction: column; gap: 26px; position: sticky; top: calc(var(--header-h) + 30px); }
.side-card { padding: 26px; border-radius: var(--radius-lg); background: var(--card); box-shadow: var(--shadow); border: 1px solid rgba(227, 232, 239, 0.7); }
.side-card h3 { font-size: 17px; color: var(--primary); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--accent-soft); display: flex; align-items: center; gap: 8px; }
.side-card h3 i { color: var(--accent); }
.side-guide-list li { margin-bottom: 10px; }
.side-guide-list a { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 10px; background: #f7f9fc; font-size: 14px; color: var(--text); transition: all var(--transition); }
.side-guide-list a i { color: var(--accent); font-size: 13px; width: 18px; text-align: center; }
.side-guide-list a:hover { background: var(--primary); color: #fff; transform: translateX(4px); box-shadow: 0 6px 16px rgba(10, 46, 82, 0.2); }
.side-guide-list a:hover i { color: var(--accent); }
.side-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.side-tags .tag { margin: 0; }
.side-contact { background: linear-gradient(135deg, var(--primary), var(--primary-light)); border: 0; color: #fff; position: relative; overflow: hidden; }
.side-contact::after { content: ""; position: absolute; right: -40px; top: -40px; width: 130px; height: 130px; border-radius: 50%; background: rgba(245, 166, 35, 0.16); }
.side-contact h3 { color: #fff; border-bottom-color: rgba(255, 255, 255, 0.18); }
.side-contact h3 i { color: var(--accent); }
.side-contact p { color: rgba(255, 255, 255, 0.85); font-size: 14px; margin-bottom: 16px; }
.side-contact .btn { width: 100%; }
.side-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.side-stat { background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.12); padding: 14px 10px; border-radius: 12px; text-align: center; }
.side-stat strong { display: block; color: var(--accent); font-size: 22px; font-weight: 800; }
.side-stat span { color: rgba(255, 255, 255, 0.75); font-size: 12px; }

.related-section { padding: 80px 0; background: var(--bg); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 36px; flex-wrap: wrap; }
.section-head h2 { font-size: 30px; color: var(--primary); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.related-card {
  display: flex; flex-direction: column; background: var(--card);
  border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border);
  transition: all var(--transition); box-shadow: var(--shadow);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: transparent; }
.related-thumb { height: 190px; overflow: hidden; position: relative; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1); }
.related-card:hover .related-thumb img { transform: scale(1.08); }
.related-thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 46, 82, 0.25), transparent 45%); }
.related-body { display: flex; flex-direction: column; flex: 1; padding: 22px 24px 26px; }
.card-tag { align-self: flex-start; display: inline-block; background: var(--accent-soft); color: #9a6a12; font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; margin-bottom: 12px; border: 1px solid #fde2b6; }
.related-body h3 { font-size: 18px; line-height: 1.45; color: var(--text); margin-bottom: 10px; transition: color var(--transition); }
.related-card:hover .related-body h3 { color: var(--primary); }
.related-body p { font-size: 14px; color: var(--text-light); margin-bottom: 16px; flex: 1; }
.related-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 8px; }
.related-link i { transition: transform var(--transition); font-size: 12px; }
.related-card:hover .related-link { color: var(--accent-dark); }
.related-card:hover .related-link i { transform: translateX(5px); }

.cta-section { position: relative; padding: 76px 0; background-size: cover; background-position: center; }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(7, 30, 54, 0.94), rgba(10, 46, 82, 0.82), rgba(20, 74, 125, 0.7)); }
.cta-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-text { max-width: 560px; }
.cta-text h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }
.cta-text p { color: rgba(255, 255, 255, 0.82); font-size: 16px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.site-footer { background: var(--primary-deep); color: rgba(255, 255, 255, 0.7); }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 50px; padding: 62px 0 46px; }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-size: 22px; font-weight: 800; margin-bottom: 16px; }
.footer-logo i { width: 38px; height: 38px; display: inline-flex; align-items: center; justify-content: center; background: var(--accent); color: var(--primary-deep); border-radius: 11px; font-size: 15px; }
.footer-brand p { font-size: 14px; line-height: 1.9; max-width: 360px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; position: relative; padding-bottom: 12px; }
.footer-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 30px; height: 3px; background: var(--accent); border-radius: 3px; }
.footer-col a { display: block; color: rgba(255, 255, 255, 0.65); font-size: 14px; padding: 5px 0; transition: all var(--transition); }
.footer-col a:hover { color: var(--accent); transform: translateX(4px); }
.footer-col p { font-size: 14px; line-height: 2; }
.footer-col p i { color: var(--accent); margin-right: 8px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 22px 0; font-size: 13px; text-align: center; color: rgba(255, 255, 255, 0.5); }

@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-side { position: static; display: grid; grid-template-columns: 1fr 1fr; align-items: start; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; z-index: 99;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: #fff; padding: 18px 24px 26px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(10, 46, 82, 0.12);
    transform: translateY(-120%); opacity: 0; pointer-events: none;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav a { padding: 13px 18px !important; text-align: center; }
  .article-hero { padding: 52px 0 76px; }
  .article-title { font-size: 28px; }
  .article-section { padding: 40px 0 60px; margin-top: -28px; }
  .article-main { padding: 28px 22px; }
  .content { font-size: 15px; }
  .article-side { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; padding: 48px 0 34px; }
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-text { max-width: 100%; }
  .cta-actions { justify-content: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-meta { gap: 12px; font-size: 13px; flex-direction: column; }
  .article-title { font-size: 24px; }
  .section-head h2 { font-size: 24px; }
  .btn-lg { width: 100%; }
  .cta-actions { width: 100%; flex-direction: column; }
}

/* roulang page: category1 */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --bg: #f1f5f9;
  --bg-light: #ffffff;
  --bg-dark: #0f172a;
  --text: #1e293b;
  --text-light: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.05);
  --shadow: 0 10px 32px rgba(15, 23, 42, 0.09);
  --shadow-lg: 0 20px 48px rgba(15, 23, 42, 0.14);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

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

/* ==================== Header ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 6px rgba(15, 23, 42, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.logo i {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-radius: 12px;
  font-size: 17px;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

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

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text-light);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(37, 99, 235, 0.08);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(37, 99, 235, 0.12);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  padding: 10px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.nav-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--text);
  border-radius: 3px;
  transition: var(--transition);
}

.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

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

.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ==================== Banner ==================== */
.page-banner {
  position: relative;
  padding: 120px 0 100px;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(37, 99, 235, 0.78) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.2), transparent 65%);
  border-radius: 50%;
  pointer-events: none;
}

.banner-content {
  position: relative;
  max-width: 820px;
  z-index: 1;
}

.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.18);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #fbbf24;
  font-size: 14px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 24px;
}

.banner-title {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: -1px;
}

.banner-title span {
  color: #fbbf24;
}

.banner-subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
  max-width: 660px;
}

.banner-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-large {
  padding: 15px 38px;
  font-size: 16px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
}

.btn-primary:hover {
  background: #f59e0b;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(245, 158, 11, 0.45);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
  background: transparent;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-outline-light {
  border-color: var(--primary);
  color: var(--primary);
  background: #fff;
}

.btn-outline-light:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

/* ==================== Section ==================== */
.section {
  padding: 90px 0;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: -0.8px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ==================== Intro Stats ==================== */
.intro-section {
  background: var(--bg-light);
  padding: 90px 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.intro-copy {
  font-size: 16px;
  color: var(--text-light);
  line-height: 2;
}

.intro-copy strong {
  color: var(--text);
}

.intro-copy .lead {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.6;
}

.intro-list {
  list-style: none;
  margin-top: 24px;
}

.intro-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  color: var(--text-light);
  font-size: 15px;
}

.intro-list li i {
  color: var(--primary);
  margin-top: 4px;
  font-size: 16px;
  flex-shrink: 0;
}

.intro-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

.stat-card .ico {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin: 0 auto 12px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
}

.stat-card .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -1px;
}

.stat-card .label {
  font-size: 14px;
  color: var(--text-light);
  margin-top: 4px;
}

/* ==================== Guide Cards ==================== */
.cards-section {
  background: var(--bg);
  padding: 90px 0;
}

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

.guide-card {
  background: var(--bg-light);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

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

.guide-card-image {
  position: relative;
  height: 190px;
  overflow: hidden;
}

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

.guide-card:hover .guide-card-image img {
  transform: scale(1.06);
}

.guide-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.25), transparent 50%);
}

.guide-card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 50px;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

.guide-card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.guide-card-text {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
  flex: 1;
}

.guide-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  margin-top: auto;
}

.guide-card-link i {
  transition: transform 0.3s ease;
}

.guide-card-link:hover {
  color: var(--primary-dark);
}

.guide-card-link:hover i {
  transform: translateX(5px);
}

/* ==================== Process ==================== */
.process-section {
  background: var(--bg-light);
  padding: 90px 0;
  position: relative;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
  position: relative;
}

.process-grid::before {
  content: '';
  position: absolute;
  top: 38px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  opacity: 0.3;
  border-radius: 2px;
}

.process-item {
  text-align: center;
  padding: 0 16px;
  position: relative;
  z-index: 1;
}

.process-icon {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--primary);
  margin: 0 auto 22px;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.18);
  transition: var(--transition);
}

.process-item:hover .process-icon {
  background: var(--primary);
  color: #fff;
  transform: translateY(-5px);
}

.process-number {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  margin-bottom: 8px;
  text-transform: uppercase;
}

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

.process-text {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ==================== FAQ ==================== */
.faq-section {
  background: var(--bg);
  padding: 90px 0;
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 60px;
  align-items: start;
}

.faq-heading .section-title {
  text-align: left;
  margin-bottom: 14px;
}

.faq-heading .section-subtitle {
  text-align: left;
}

.faq-heading-box {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  margin-top: 30px;
  box-shadow: var(--shadow-sm);
}

.faq-heading-box ul {
  list-style: none;
}

.faq-heading-box ul li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 0;
  font-size: 15px;
  color: var(--text-light);
}

.faq-heading-box ul li i {
  color: var(--primary);
  font-size: 14px;
  width: 22px;
  height: 22px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-item[open] {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.faq-item summary {
  cursor: pointer;
  padding: 20px 22px;
  font-weight: 600;
  font-size: 16px;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
  user-select: none;
}

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

.faq-item summary::after {
  content: '+';
  font-size: 24px;
  font-weight: 500;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 22px 20px;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.9;
}

/* ==================== CTA ==================== */
.cta-section {
  padding: 90px 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(37, 99, 235, 0.85)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  color: #fff;
  position: relative;
}

.cta-inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-text {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin-bottom: 34px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.cta-badges {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 8px 18px;
  border-radius: 50px;
}

.cta-badge i {
  color: #fbbf24;
}

/* ==================== Footer ==================== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.78);
  padding: 70px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 1fr;
  gap: 50px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.footer-logo i {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.9;
  max-width: 360px;
}

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

.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  padding: 6px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: #fff;
  padding-left: 6px;
}

.footer-col p {
  font-size: 14px;
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-col p i {
  color: var(--primary-light);
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom p {
  margin: 0;
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
  .banner-title {
    font-size: 36px;
  }
  
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  
  .process-grid::before {
    display: none;
  }
  
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  
  .header-inner {
    height: 62px;
  }
  
  .main-nav {
    position: absolute;
    top: 62px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    gap: 6px;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
    border-bottom: 1px solid var(--border);
    display: none;
    border-radius: 0;
  }
  
  .main-nav.is-open {
    display: flex;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-link {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
  }
  
  .nav-link.active::after {
    display: none;
  }
  
  .page-banner {
    padding: 90px 0 70px;
  }
  
  .banner-title {
    font-size: 30px;
  }
  
  .banner-subtitle {
    font-size: 15px;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 26px;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .process-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .cta-title {
    font-size: 28px;
  }
  
  .banner-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .banner-actions .btn {
    width: 100%;
  }
  
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .cta-actions .btn {
    width: 100%;
  }
  
  .intro-stats {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  
  .banner-title {
    font-size: 25px;
  }
  
  .intro-stats {
    grid-template-columns: 1fr;
  }
  
  .stat-card {
    padding: 20px;
  }
  
  .faq-item summary {
    font-size: 15px;
    padding: 16px;
  }
  
  .faq-answer {
    padding: 0 16px 16px;
    font-size: 14px;
  }
  
  .guide-card-body {
    padding: 20px;
  }
  
  .cta-badges {
    flex-direction: column;
    align-items: center;
  }
  
  .logo {
    font-size: 19px;
  }
}