/* roulang page: index */
:root{
  --brand:#0C2B25; --brand-light:#145047; --brand-dark:#071E1A;
  --accent:#D8FF3E; --bg:#F6F5F0; --white:#FFFFFF;
  --text-strong:#16181D; --text-body:#3E443F; --text-muted:#7D837D;
  --text-invert:#F6F5F0; --line:#E3E1D9; --line-dark:rgba(255,255,255,0.18);
  --alert:#E5602F;
  --radius-card:12px; --radius-round:999px; --radius-hero:16px; --radius-device:28px;
  --shadow-card:0 1px 2px rgba(12,43,37,0.06);
  --shadow-hover:0 12px 32px rgba(12,43,37,0.10);
  --shadow-nav:0 4px 24px rgba(12,43,37,0.05);
  --transition:cubic-bezier(0.16,1,0.3,1) 0.35s;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--bg);color:var(--text-body);line-height:1.75;
  font-variant-numeric:tabular-nums;overflow-x:hidden;
}
img{max-width:100%;object-fit:cover;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--brand)}
button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
.section{padding:clamp(4rem,9vw,7rem) 0;position:relative}
.section-head{display:flex;align-items:baseline;gap:24px;margin-bottom:48px}
.section-index{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:0.08em}
.section-title{font-size:clamp(1.6rem,3vw,2.25rem);font-weight:700;color:var(--text-strong);line-height:1.3}
.section-line{flex:1;height:1px;background:var(--line)}
.section-desc{color:var(--text-muted);font-size:15px;max-width:560px;margin-top:8px}
.reveal{opacity:0;transform:translateY(20px);transition:opacity 0.35s var(--transition),transform 0.35s var(--transition)}
.reveal.visible{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* ===== Header Nav ===== */
.site-header{background:var(--bg);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1000;transition:background 0.3s,box-shadow 0.3s}
.site-header.scrolled{background:rgba(246,245,240,0.92);backdrop-filter:blur(8px);box-shadow:var(--shadow-nav)}
.header-utility{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line)}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-icon{width:36px;height:36px;border:2px solid var(--brand);border-radius:50%;display:flex;align-items:center;justify-content:center;position:relative}
.logo-icon::after{content:"";width:16px;height:2px;background:var(--brand);border-radius:2px;position:absolute;bottom:10px;left:8px}
.logo-text{font-size:20px;font-weight:800;color:var(--brand);letter-spacing:0.02em}
.logo-text span{font-size:12px;color:var(--text-muted);font-weight:400;margin-left:2px}
.utility-right{display:flex;align-items:center;gap:16px;font-size:14px}
.utility-link{color:var(--text-body);font-weight:500;border:1px solid var(--line);border-radius:var(--radius-round);padding:4px 16px;transition:all var(--transition)}
.utility-link:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.lang-tag{font-size:13px;color:var(--text-muted)}
.header-search{display:flex;justify-content:center;padding:16px 0;border-bottom:1px solid var(--line)}
.search-form{width:100%;max-width:680px;display:flex;align-items:center;gap:8px}
.search-input-wrap{position:relative;flex:1}
.search-input-wrap .fa-magnifying-glass{position:absolute;left:20px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:16px}
.search-input{width:100%;height:52px;border:1px solid var(--line);border-radius:var(--radius-round);padding:0 140px 0 50px;background:#fff;font-size:15px;transition:all var(--transition)}
.search-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(216,255,62,0.25);background:#fff}
.search-btn{position:absolute;right:6px;top:50%;transform:translateY(-50%);height:40px;padding:0 22px;border:none;border-radius:var(--radius-round);background:var(--brand);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background var(--transition)}
.search-btn:hover{background:var(--brand-light)}
.header-categories{display:flex;justify-content:center;gap:32px;padding:12px 0;flex-wrap:wrap}
.cat-link{font-size:14px;font-weight:500;color:var(--text-body);position:relative;padding-bottom:4px;transition:color var(--transition)}
.cat-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent);transition:width var(--transition)}
.cat-link:hover{color:var(--brand)}
.cat-link:hover::after{width:100%}
.cat-link.active{color:var(--brand);font-weight:700}
.cat-link.active::after{width:100%}
.mobile-toggle{display:none;background:none;border:none;font-size:22px;color:var(--brand);cursor:pointer}
.mobile-categories{display:none;background:#fff;border-top:1px solid var(--line);padding:0 24px}
.mobile-categories.open{display:block}
.mobile-categories .cat-link{display:block;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
.mobile-categories .cat-link:last-child{border-bottom:none}

/* ===== Hero ===== */
.hero{background:var(--bg);position:relative;overflow:hidden;padding:clamp(3.5rem,7vw,5.5rem) 0}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(12,43,37,0.04) 1px,transparent 1px),linear-gradient(90deg,rgba(12,43,37,0.04) 1px,transparent 1px);background-size:60px 60px;pointer-events:none}
.hero::after{content:"亿德体育";position:absolute;right:-40px;top:20%;font-size:180px;font-weight:800;color:rgba(12,43,37,0.03);line-height:1;pointer-events:none;letter-spacing:-0.02em;white-space:nowrap}
.hero-content{display:grid;grid-template-columns:55% 45%;gap:60px;align-items:center;position:relative;z-index:2}
.hero-left .hero-tag{display:inline-flex;align-items:center;gap:6px;background:rgba(216,255,62,0.2);border:1px solid rgba(12,43,37,0.1);border-radius:var(--radius-round);padding:6px 16px;font-size:13px;color:var(--brand);font-weight:600;margin-bottom:24px}
.hero-left h1{font-size:clamp(2.75rem,6vw,4.2rem);font-weight:800;line-height:1.15;color:var(--brand);margin-bottom:20px}
.hero-left h1 .highlight{background:linear-gradient(180deg,transparent 60%,rgba(216,255,62,0.6) 60%);display:inline-block;padding:0 4px}
.hero-sub{font-size:17px;color:var(--text-body);line-height:1.7;max-width:440px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.btn-primary-custom{display:inline-flex;align-items:center;gap:8px;height:56px;padding:0 32px;background:var(--accent);color:var(--brand-dark);border:none;border-radius:var(--radius-round);font-size:16px;font-weight:700;cursor:pointer;transition:all var(--transition)}
.btn-primary-custom:hover{transform:translateY(-2px);filter:brightness(1.05);color:var(--brand-dark);box-shadow:0 8px 24px rgba(216,255,62,0.4)}
.btn-secondary-custom{display:inline-flex;align-items:center;gap:8px;height:56px;padding:0 32px;background:transparent;color:var(--brand);border:1.5px solid var(--brand);border-radius:var(--radius-round);font-size:16px;font-weight:600;cursor:pointer;transition:all var(--transition)}
.btn-secondary-custom:hover{background:var(--brand);color:#fff;transform:translateY(-2px)}
.hero-micro{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--text-muted)}
.hero-micro i{font-size:18px;color:var(--brand)}
.hero-visual{position:relative}
.hero-img-wrap{position:relative;border-radius:var(--radius-hero);overflow:hidden;box-shadow:0 20px 60px rgba(12,43,37,0.15)}
.hero-img-wrap img{width:100%;height:420px;object-fit:cover;transform:scale(1.05);animation:heroZoom 1.2s var(--transition) forwards}
@keyframes heroZoom{to{transform:scale(1)}}
.hero-img-wrap::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,43,37,0) 60%,rgba(12,43,37,0.4))}
.official-badge{position:absolute;top:16px;left:16px;background:var(--alert);color:#fff;font-size:12px;font-weight:700;padding:4px 12px;border-radius:var(--radius-round);z-index:2}

/* ===== Data Bar ===== */
.stats-bar{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;text-align:center}
.stat-item .stat-num{font-size:clamp(2rem,4vw,2.75rem);font-weight:800;color:var(--brand);line-height:1.2}
.stat-item .stat-label{font-size:13px;color:var(--text-muted);margin-top:6px}

/* ===== Core Features ===== */
.core-section{background:var(--bg)}
.core-grid{display:grid;grid-template-columns:40% 60%;gap:60px}
.core-left .section-index{font-size:13px;font-weight:700;color:var(--brand);display:block;margin-bottom:16px}
.core-left h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;color:var(--text-strong);line-height:1.3;margin-bottom:20px}
.core-left p{color:var(--text-muted);font-size:15px;line-height:1.8}
.core-right .feature-list{list-style:none}
.feature-item{display:flex;align-items:flex-start;gap:20px;padding:28px 0;border-bottom:1px solid var(--line)}
.feature-item:first-child{border-top:1px solid var(--line)}
.feature-icon{width:48px;height:48px;border-radius:50%;background:rgba(12,43,37,0.06);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background var(--transition)}
.feature-item:hover .feature-icon{background:rgba(12,43,37,0.1)}
.feature-icon i{font-size:20px;color:var(--brand)}
.feature-content h3{font-size:18px;font-weight:600;color:var(--text-strong);margin-bottom:6px}
.feature-content p{font-size:14px;color:var(--text-muted);line-height:1.7;max-width:420px}

/* ===== Screenshot Carousel ===== */
.carousel-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.carousel-wrap{display:grid;grid-template-columns:35% 65%;gap:60px;align-items:center}
.carousel-caption-area h3{font-size:22px;font-weight:700;color:var(--text-strong);margin-bottom:12px}
.carousel-caption-area p{font-size:15px;color:var(--text-muted);line-height:1.7;margin-bottom:24px}
.carousel-indicators-custom{display:flex;gap:8px;margin-top:20px}
.carousel-dot{width:8px;height:8px;border-radius:50%;background:var(--line);border:none;padding:0;cursor:pointer;transition:all var(--transition)}
.carousel-dot.active{width:28px;background:var(--accent);border-radius:var(--radius-round)}
.carousel-device{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-device);padding:20px;box-shadow:var(--shadow-card)}
.carousel-device::before,.carousel-device::after{content:"";display:block;height:3px;background:var(--line);border-radius:2px;margin-bottom:12px;width:60px}
.carousel-device img{width:100%;height:auto;border-radius:12px;max-height:420px;object-fit:cover}
.carousel-prev,.carousel-next{position:absolute;bottom:30px;width:44px;height:44px;border-radius:50%;background:#fff;border:none;box-shadow:var(--shadow-hover);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:5;transition:all var(--transition)}
.carousel-prev{left:20px}.carousel-next{right:20px}
.carousel-prev:hover,.carousel-next:hover{background:var(--brand);color:#fff}
.carousel-prev i,.carousel-next i{font-size:18px;color:var(--brand)}
.carousel-prev:hover i,.carousel-next:hover i{color:#fff}

/* ===== System Requirements ===== */
.sysreq-section{background:var(--brand);position:relative;overflow:hidden}
.sysreq-section::before{content:"";position:absolute;top:-100px;right:-100px;width:400px;height:400px;border:1px solid rgba(255,255,255,0.08);border-radius:50%}
.sysreq-section::after{content:"";position:absolute;bottom:-60px;left:30%;width:200px;height:200px;border:1px solid rgba(255,255,255,0.05);border-radius:50%}
.sysreq-section .section-title{color:#fff}
.sysreq-section .section-index{color:var(--accent)}
.sysreq-section .section-line{background:var(--line-dark)}
.sysreq-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;position:relative;z-index:2}
.sysreq-card{background:rgba(255,255,255,0.05);border:1px solid var(--line-dark);border-radius:16px;padding:36px;transition:background var(--transition),transform var(--transition)}
.sysreq-card:hover{background:rgba(255,255,255,0.08);transform:translateY(-4px)}
.sysreq-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.sysreq-card-header h3{font-size:22px;font-weight:700;color:#fff;display:flex;align-items:center;gap:10px}
.sysreq-card-header h3 i{font-size:24px}
.version-badge{background:rgba(216,255,62,0.2);color:var(--accent);font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-round)}
.sysreq-list{list-style:none;margin:0;padding:0}
.sysreq-list li{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px solid var(--line-dark);font-size:14px}
.sysreq-list li:last-child{border-bottom:none}
.sysreq-list .key{color:rgba(255,255,255,0.6);font-size:13px}
.sysreq-list .value{color:#fff;font-size:15px;font-weight:500}
.sysreq-btn{display:inline-flex;align-items:center;gap:6px;margin-top:24px;padding:10px 24px;border:1px solid rgba(255,255,255,0.5);border-radius:var(--radius-round);color:#fff;font-size:14px;font-weight:500;transition:all var(--transition)}
.sysreq-btn:hover{background:var(--accent);border-color:var(--accent);color:var(--brand-dark)}

/* ===== Reviews ===== */
.reviews-section{background:var(--bg)}
.reviews-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:48px;gap:30px}
.reviews-head-left h2{font-size:clamp(1.6rem,3vw,2.25rem);font-weight:700;color:var(--text-strong);margin-bottom:8px}
.reviews-head-left .section-index{display:block;font-size:13px;color:var(--brand);font-weight:700;margin-bottom:10px}
.reviews-head-right{text-align:right;display:flex;align-items:center;gap:16px}
.reviews-score{font-size:clamp(2.5rem,4vw,3.5rem);font-weight:800;color:var(--brand);line-height:1}
.reviews-score-label{font-size:13px;color:var(--text-muted)}
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-card);transition:all var(--transition)}
.review-card:nth-child(2){margin-top:32px}
.review-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.review-stars{display:flex;gap:4px;margin-bottom:16px}
.review-stars i{color:var(--alert);font-size:14px}
.review-stars span{font-size:12px;color:var(--text-muted);margin-left:8px}
.review-text{font-size:15px;line-height:1.7;color:var(--text-body);margin-bottom:20px}
.review-user{display:flex;align-items:center;gap:12px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700}
.review-avatar span{font-size:15px}
.review-user-info .name{font-size:14px;font-weight:600;color:var(--text-strong)}
.review-user-info .time{font-size:12px;color:var(--text-muted)}

/* ===== Download ===== */
.download-section{background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;position:relative}
.download-section::before{content:"";position:absolute;inset:0;background:rgba(246,245,240,0.94)}
.download-content{position:relative;z-index:2;text-align:center}
.download-content h2{font-size:clamp(1.6rem,3vw,2.25rem);font-weight:700;color:var(--text-strong);margin-bottom:12px}
.download-content>p{color:var(--text-muted);font-size:15px;max-width:560px;margin:0 auto 40px}
.download-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.download-btn{display:inline-flex;align-items:center;gap:10px;height:60px;padding:0 28px;border-radius:var(--radius-round);font-size:15px;font-weight:600;cursor:pointer;transition:all var(--transition);border:1px solid var(--line);background:#fff;color:var(--text-strong)}
.download-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand)}
.download-btn i{font-size:20px}
.download-btn.btn-accent{background:var(--accent);border-color:var(--accent);color:var(--brand-dark);font-weight:700}
.download-btn.btn-accent:hover{filter:brightness(1.05);box-shadow:0 8px 24px rgba(216,255,62,0.4)}
.download-qr{display:inline-flex;flex-direction:column;align-items:center;gap:8px;padding:12px;border:2px dashed var(--text-muted);border-radius:12px;background:#fff;color:var(--text-muted);font-size:13px;height:60px;min-width:120px;justify-content:center;transition:all var(--transition)}
.download-qr:hover{border-color:var(--brand);color:var(--brand)}
.download-qr i{font-size:24px;margin-bottom:2px}
.download-security{font-size:13px;color:var(--text-muted);margin-top:16px}

/* ===== Latest News ===== */
.news-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.news-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:40px}
.news-head-left{display:flex;align-items:baseline;gap:16px}
.news-head-left h2{font-size:clamp(1.5rem,3vw,2rem);font-weight:700;color:var(--text-strong)}
.news-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-body);font-weight:500;transition:all var(--transition)}
.news-more:hover{color:var(--brand);gap:10px}
.news-list{list-style:none;margin:0;padding:0}
.news-item{display:flex;align-items:center;gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
.news-item:last-child{border-bottom:none}
.news-item .news-category{flex-shrink:0;font-size:12px;font-weight:500;padding:4px 12px;border-radius:var(--radius-round);border:1px solid var(--brand);color:var(--brand);background:transparent}
.news-item .news-title{font-size:17px;font-weight:600;color:var(--text-strong);transition:color var(--transition);cursor:pointer}
.news-item .news-title:hover{color:var(--brand);text-decoration:underline}
.news-item .news-summary{font-size:14px;color:var(--text-muted);margin-top:4px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:560px}
.news-item .news-date{flex-shrink:0;font-size:14px;color:var(--text-muted);white-space:nowrap}
.news-empty{text-align:center;padding:48px 0;color:var(--text-muted)}
.news-empty i{font-size:32px;margin-bottom:12px;display:block;color:var(--line)}

/* ===== FAQ ===== */
.faq-section{background:var(--bg)}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line);padding:4px 0}
.faq-item:last-child{border-bottom:none}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:22px 0;background:none;border:none;width:100%;text-align:left;font-size:16px;font-weight:600;color:var(--text-strong);cursor:pointer;transition:color var(--transition)}
.faq-question:hover{color:var(--brand)}
.faq-icon{width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--text-muted);transition:all var(--transition);flex-shrink:0}
.faq-icon i{font-style:normal;line-height:1}
.faq-item.open .faq-icon{background:var(--brand);border-color:var(--brand);color:#fff;transform:rotate(45deg)}
.faq-answer{display:none;padding:0 40px 24px 0;font-size:15px;color:var(--text-muted);line-height:1.8}
.faq-item.open .faq-answer{display:block}

/* ===== CTA ===== */
.cta-section{background:var(--brand);padding:60px 0;position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;top:-80px;right:10%;width:300px;height:300px;border:1px solid rgba(255,255,255,0.06);border-radius:50%}
.cta-content{display:flex;align-items:center;justify-content:space-between;gap:40px;position:relative;z-index:2;flex-wrap:wrap}
.cta-content h2{font-size:clamp(1.4rem,3vw,2rem);font-weight:700;color:#fff;margin-bottom:8px}
.cta-content p{color:rgba(255,255,255,0.7);font-size:15px}
.cta-btn{display:inline-flex;align-items:center;gap:8px;height:54px;padding:0 36px;background:var(--accent);color:var(--brand-dark);border:none;border-radius:var(--radius-round);font-size:16px;font-weight:700;cursor:pointer;transition:all var(--transition)}
.cta-btn:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 8px 24px rgba(216,255,62,0.3);color:var(--brand-dark)}

/* ===== Footer ===== */
.site-footer{background:var(--brand);color:var(--text-invert);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:50px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo .logo-icon{border-color:var(--text-invert)}
.footer-logo .logo-icon::after{background:var(--text-invert)}
.footer-logo .logo-text{color:#fff;font-size:22px}
.footer-logo .logo-text span{color:rgba(255,255,255,0.5)}
.footer-brand-desc{font-size:14px;color:rgba(255,255,255,0.6);line-height:1.7;max-width:280px;margin-bottom:20px}
.footer-social{display:flex;gap:12px}
.footer-social a{width:36px;height:36px;border-radius:50%;border:1px solid var(--line-dark);display:flex;align-items:center;justify-content:center;color:var(--text-invert);font-size:14px;transition:all var(--transition)}
.footer-social a:hover{background:var(--accent);border-color:var(--accent);color:var(--brand-dark)}
.footer-col h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:20px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,0.6);transition:color var(--transition)}
.footer-col ul a:hover{color:var(--accent)}
.footer-contact{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,0.6);margin-bottom:16px}
.footer-contact i{color:var(--accent)}
.footer-subscribe{display:flex;border-bottom:2px solid var(--line-dark);padding-bottom:8px;margin-top:24px}
.footer-subscribe input{flex:1;background:transparent;border:none;color:#fff;padding:8px 0;font-size:14px}
.footer-subscribe input::placeholder{color:rgba(255,255,255,0.4)}
.footer-subscribe button{background:none;border:none;color:var(--accent);font-size:18px;cursor:pointer;padding:0 8px;transition:transform var(--transition)}
.footer-subscribe button:hover{transform:translateX(4px)}
.footer-bottom{border-top:1px solid var(--line-dark);padding:20px 0;font-size:13px;color:rgba(255,255,255,0.5);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}

/* ===== Back to top ===== */
.back-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:999;opacity:0;visibility:hidden;transition:all var(--transition)}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--brand-light);transform:translateY(-4px)}

/* ===== Responsive ===== */
@media (max-width:991px){
  .hero-content{grid-template-columns:1fr;gap:40px}
  .hero-visual img{height:320px}
  .core-grid{grid-template-columns:1fr;gap:40px}
  .carousel-wrap{grid-template-columns:1fr;gap:32px}
  .reviews-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .sysreq-grid{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:767px){
  .header-utility{padding:8px 0}
  .utility-right{display:none}
  .mobile-toggle{display:block}
  .header-categories{display:none}
  .header-search{padding:10px 0}
  .search-form{max-width:100%}
  .search-input{padding-right:90px}
  .search-btn{padding:0 14px;font-size:13px}
  .hero-left h1{font-size:clamp(2.2rem,8vw,2.8rem)}
  .hero-sub{font-size:15px}
  .hero-cta{flex-direction:column}
  .btn-primary-custom,.btn-secondary-custom{width:100%;justify-content:center}
  .hero-micro{flex-wrap:wrap}
  .reviews-grid{grid-template-columns:1fr}
  .review-card:nth-child(2){margin-top:0}
  .stats-grid{grid-template-columns:1fr 1fr;gap:24px}
  .news-item{flex-direction:column;align-items:flex-start;gap:10px}
  .news-item .news-date{align-self:flex-start}
  .faq-question{font-size:15px;padding:18px 0}
  .cta-content{flex-direction:column;text-align:center}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;text-align:center}
  .back-top{right:16px;bottom:16px;width:38px;height:38px}
}
@media (max-width:575px){
  .container{padding-left:18px;padding-right:18px}
  .search-input{height:46px;font-size:14px;padding-left:42px}
  .search-btn{height:36px;padding:0 12px;font-size:12px}
  .section{padding:3.5rem 0}
  .reviews-head{flex-direction:column;align-items:flex-start}
  .reviews-head-right{justify-content:flex-start}
  .download-btns{flex-direction:column;width:100%}
  .download-btn{width:100%;justify-content:center}
  .download-qr{width:100%}
  .sysreq-card{padding:24px}
  .stats-grid{grid-template-columns:1fr}
}

/* roulang page: article */
:root {
  --brand: #0C2B25;
  --brand-light: #145047;
  --brand-dark: #071E1A;
  --accent: #D8FF3E;
  --bg: #F6F5F0;
  --card-bg: #FFFFFF;
  --text-strong: #16181D;
  --text-body: #3E443F;
  --text-muted: #7D837D;
  --text-invert: #F6F5F0;
  --line: #E3E1D9;
  --line-dark: rgba(255,255,255,0.18);
  --alert: #E5602F;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(12,43,37,0.06);
  --shadow-hover: 0 12px 32px rgba(12,43,37,0.10);
  --shadow-header: 0 4px 24px rgba(12,43,37,0.05);
  --transition-base: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --font-stack: -apple-system, "PingFang SC", "HarmonyOS Sans 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-stack);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; transition: color var(--transition-base), opacity var(--transition-base); }
a:hover { color: var(--brand-light); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid rgba(216,255,62,0.45); outline-offset: 2px; border-radius: 4px; }
button { font-family: inherit; }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; margin: 0 auto; }
.text-center { text-align: center; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ===== Site Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1040;
  background: rgba(246,245,240,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--transition-base), background var(--transition-base);
}
.site-header.scrolled { box-shadow: var(--shadow-header); }
.header-utility { background: var(--brand); color: var(--text-invert); }
.header-utility-inner { display: flex; align-items: center; justify-content: space-between; height: 52px; }
.header-logo { display: flex; align-items: center; gap: 10px; color: var(--text-invert); }
.header-logo:hover { color: var(--accent); }
.logo-icon {
  width: 30px; height: 30px; border: 2px solid currentColor; border-radius: 50%;
  position: relative; flex-shrink: 0;
}
.logo-icon::before {
  content: ""; position: absolute; inset: 5px; border: 2px solid currentColor;
  border-radius: 50%; opacity: 0.6;
}
.logo-icon::after {
  content: ""; position: absolute; top: 50%; left: 50%; width: 4px; height: 4px;
  background: currentColor; border-radius: 50%; transform: translate(-50%, -50%);
}
.logo-text { font-weight: 800; font-size: 18px; letter-spacing: 0.02em; line-height: 1.2; }
.logo-text small {
  font-size: 12px; font-weight: 400; color: rgba(246,245,240,0.65);
  margin-left: 4px; letter-spacing: 0.08em;
}
.header-actions { display: flex; align-items: center; gap: 16px; }
.btn-download-mini {
  display: inline-flex; align-items: center; gap: 6px; height: 32px;
  padding: 0 14px; border-radius: 999px; background: var(--accent);
  color: var(--brand-dark); font-size: 13px; font-weight: 700;
  border: none; cursor: pointer; transition: all var(--transition-base);
}
.btn-download-mini:hover { background: #E0FF56; color: var(--brand-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(216,255,62,0.35); }
.lang-label { font-size: 13px; color: rgba(246,245,240,0.7); letter-spacing: 0.05em; }
.navbar-toggler {
  display: none; background: none; border: 1px solid var(--line-dark);
  border-radius: 999px; width: 36px; height: 36px; color: var(--text-invert);
  font-size: 14px; cursor: pointer; align-items: center; justify-content: center;
}
.header-search-row { padding: 14px 0; border-bottom: 1px solid var(--line); background: rgba(246,245,240,0.96); }
.search-box {
  max-width: 640px; margin: 0 auto; position: relative; display: flex; align-items: center;
  height: 52px; background: var(--card-bg); border: 1px solid var(--line);
  border-radius: 999px; padding: 0 6px 0 20px; transition: all var(--transition-base);
}
.search-box:focus-within { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(216,255,62,0.25); width: 100%; }
.search-icon { color: var(--text-muted); font-size: 15px; margin-right: 12px; flex-shrink: 0; }
.search-box input {
  flex: 1; border: none; outline: none; font-size: 15px; color: var(--text-strong);
  background: transparent; height: 100%; min-width: 0;
}
.search-box input::placeholder { color: var(--text-muted); }
.search-btn {
  height: 40px; padding: 0 24px; border-radius: 999px; border: none;
  background: var(--brand); color: var(--text-invert); font-size: 14px;
  font-weight: 600; cursor: pointer; transition: all var(--transition-base);
  flex-shrink: 0;
}
.search-btn:hover { background: var(--brand-dark); transform: translateY(-1px); }
.search-suggest {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0; background: var(--card-bg);
  border-radius: 12px; box-shadow: var(--shadow-hover); border: 1px solid var(--line);
  padding: 8px 0; display: none; z-index: 10;
}
.search-suggest.active { display: block; }
.search-suggest .suggest-item {
  padding: 10px 20px; font-size: 14px; color: var(--text-body); cursor: pointer;
  transition: background var(--transition-base);
}
.search-suggest .suggest-item:hover { background: #FAF8F2; }
.header-categories { background: rgba(246,245,240,0.96); padding: 0; }
.header-categories .container {
  display: flex; align-items: center; justify-content: center; gap: 36px; height: 46px;
}
.cat-link {
  font-size: 14px; font-weight: 500; color: var(--text-body); padding: 0 2px;
  position: relative; height: 46px; display: inline-flex; align-items: center;
  transition: color var(--transition-base);
  white-space: nowrap;
}
.cat-link:hover { color: var(--brand); }
.cat-link.active { color: var(--brand); font-weight: 700; }
.cat-link.active::after {
  content: ""; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 6px; height: 2px; background: var(--accent); border-radius: 2px;
}
.mobile-nav-panel { background: var(--card-bg); border-bottom: 1px solid var(--line); }
.mobile-nav-link {
  display: block; padding: 14px 0; font-size: 15px; color: var(--text-body);
  border-bottom: 1px solid var(--line); transition: all var(--transition-base);
}
.mobile-nav-link:last-child { border-bottom: none; }
.mobile-nav-link.active { color: var(--brand); font-weight: 700; }

/* ===== Article Page ===== */
.article-wrap { padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(3.5rem, 7vw, 5rem); }
.breadcrumb-bar { max-width: 720px; margin: 0 auto 32px; font-size: 13px; color: var(--text-muted); }
.breadcrumb-bar a { color: var(--text-muted); }
.breadcrumb-bar a:hover { color: var(--brand); }
.breadcrumb-bar .current { color: var(--brand); font-weight: 600; }
.breadcrumb-bar .sep { margin: 0 8px; color: var(--line); }
.article-head { max-width: 720px; margin: 0 auto 36px; }
.article-head h1 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 800; line-height: 1.3; color: var(--text-strong);
  margin-bottom: 20px; letter-spacing: 0.01em;
}
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; font-size: 14px; color: var(--text-muted); }
.meta-item { display: inline-flex; align-items: center; gap: 5px; }
.meta-dot { width: 4px; height: 4px; background: var(--line); border-radius: 50%; }
.badge-cat {
  display: inline-block; padding: 2px 12px; border-radius: 999px;
  border: 1px solid var(--brand); color: var(--brand); font-size: 12px; font-weight: 600;
}
.article-share { display: flex; align-items: center; gap: 8px; margin-top: 16px; }
.article-share .share-label { font-size: 13px; color: var(--text-muted); margin-right: 4px; }
.share-btn {
  width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--line);
  background: transparent; color: var(--text-muted); font-size: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition-base);
}
.share-btn:hover { background: var(--brand); border-color: var(--brand); color: var(--text-invert); }
.article-cover { max-width: 720px; margin: 0 auto 40px; }
.article-cover img { width: 100%; border-radius: 12px; object-fit: cover; aspect-ratio: 16/9; box-shadow: var(--shadow-sm); }
.article-cover figcaption { text-align: center; font-size: 13px; color: var(--text-muted); margin-top: 10px; }
.article-content { max-width: 720px; margin: 0 auto; font-size: 17px; line-height: 1.9; color: var(--text-body); }
.article-content h2 {
  font-size: 1.45rem; font-weight: 700; color: var(--text-strong);
  margin: 40px 0 16px; padding-left: 12px; position: relative;
}
.article-content h2::before {
  content: ""; position: absolute; left: 0; top: 6px; bottom: 6px;
  width: 4px; background: var(--brand); border-radius: 2px;
}
.article-content h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-strong); margin: 32px 0 14px; }
.article-content p { margin-bottom: 24px; }
.article-content ul, .article-content ol { margin: 0 0 24px 1.4em; }
.article-content li { margin-bottom: 8px; }
.article-content a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--brand-light); }
.article-content blockquote {
  border-left: 3px solid var(--brand); background: #F0EFE9;
  padding: 14px 20px; border-radius: 8px; margin: 24px 0;
  font-size: 15px; color: var(--text-body); line-height: 1.7;
}
.article-content blockquote p { margin-bottom: 0; }
.article-content img { border-radius: 12px; margin: 24px auto; }
.article-content img + em {
  display: block; text-align: center; font-style: normal; font-size: 13px;
  color: var(--text-muted); margin-top: 8px;
}
.article-content table {
  width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14px;
}
.article-content table th {
  background: var(--brand); color: var(--text-invert); padding: 10px 14px;
  text-align: left; font-weight: 600;
}
.article-content table td {
  padding: 9px 14px; border: 1px solid var(--line);
}
.article-content table tr:nth-child(even) td { background: #FAF8F2; }
.article-content hr { border: none; border-top: 1px solid var(--line); margin: 36px 0; }
.article-tags { max-width: 720px; margin: 40px auto 0; padding-top: 24px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.article-tags .tags-label { font-size: 14px; color: var(--text-muted); margin-right: 4px; }
.tag-link {
  display: inline-block; padding: 4px 14px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card-bg);
  font-size: 13px; color: var(--text-body); transition: all var(--transition-base);
}
.tag-link:hover { border-color: var(--brand); color: var(--brand); background: rgba(12,43,37,0.04); }
.article-nav { max-width: 720px; margin: 40px auto 0; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.article-nav a {
  display: flex; flex-direction: column; gap: 6px; padding: 16px 20px;
  background: var(--card-bg); border-radius: 12px; border: 1px solid var(--line);
  transition: all var(--transition-base);
}
.article-nav a:hover { border-color: var(--brand); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.article-nav .nav-label { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.article-nav .nav-title { font-size: 14px; color: var(--text-strong); font-weight: 600; line-height: 1.4; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.article-nav .next { text-align: right; }
.article-nav .next .nav-label { justify-content: flex-end; }
.related-section { max-width: 1200px; margin: 64px auto 0; }
.related-section h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem); font-weight: 700; color: var(--text-strong);
  margin-bottom: 28px; position: relative; padding-left: 14px;
}
.related-section h2::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 4px; background: var(--brand); border-radius: 2px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  background: var(--card-bg); border-radius: 12px; overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-card .cover { aspect-ratio: 16/9; overflow: hidden; }
.related-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s cubic-bezier(0.16,1,0.3,1); }
.related-card:hover .cover img { transform: scale(1.04); }
.related-card .related-body { padding: 20px; }
.related-card h3 { font-size: 16px; font-weight: 600; color: var(--text-strong); line-height: 1.5; margin-bottom: 8px; }
.related-card h3 a { color: var(--text-strong); }
.related-card h3 a:hover { color: var(--brand); }
.related-card .related-date { font-size: 13px; color: var(--text-muted); }
.article-back { max-width: 720px; margin: 48px auto 0; text-align: center; }
.article-back a {
  display: inline-flex; align-items: center; gap: 8px; font-size: 14px;
  color: var(--text-muted); padding: 10px 24px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card-bg);
  transition: all var(--transition-base);
}
.article-back a:hover { color: var(--brand); border-color: var(--brand); }

/* Not Found */
.article-not-found { max-width: 720px; margin: 80px auto; text-align: center; padding: 60px 40px; background: var(--card-bg); border-radius: 16px; border: 1px solid var(--line); }
.article-not-found i { font-size: 48px; color: var(--line); margin-bottom: 16px; display: block; }
.article-not-found p { font-size: 16px; color: var(--text-muted); margin-bottom: 20px; }
.article-not-found a {
  display: inline-flex; align-items: center; gap: 8px; height: 44px; padding: 0 28px;
  border-radius: 999px; background: var(--brand); color: var(--text-invert);
  font-size: 14px; font-weight: 600; transition: all var(--transition-base);
}
.article-not-found a:hover { background: var(--brand-light); transform: translateY(-2px); }

/* ===== Footer ===== */
.site-footer { background: var(--brand); color: var(--text-invert); margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 64px 0 48px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; color: var(--text-invert); }
.footer-logo:hover { color: var(--accent); }
.footer-logo .logo-text { color: var(--text-invert); }
.footer-logo .logo-text small { color: rgba(246,245,240,0.65); }
.footer-brand-desc { font-size: 14px; line-height: 1.8; color: rgba(246,245,240,0.7); margin-bottom: 20px; max-width: 260px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--line-dark);
  display: inline-flex; align-items: center; justify-content: center;
  color: rgba(246,245,240,0.7); font-size: 14px; transition: all var(--transition-base);
}
.footer-social a:hover { background: var(--accent); border-color: var(--accent); color: var(--brand-dark); transform: translateY(-2px); }
.site-footer h4 { font-size: 15px; font-weight: 600; color: var(--text-invert); margin-bottom: 18px; }
.site-footer ul { list-style: none; padding: 0; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer ul a { font-size: 14px; color: rgba(246,245,240,0.65); transition: all var(--transition-base); }
.site-footer ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(246,245,240,0.65); margin-bottom: 12px; }
.footer-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-subscribe { display: flex; align-items: center; border-bottom: 1px solid var(--line-dark); margin-top: 16px; padding-bottom: 4px; }
.footer-subscribe input {
  flex: 1; background: transparent; border: none; outline: none;
  font-size: 14px; color: var(--text-invert); padding: 8px 0;
}
.footer-subscribe input::placeholder { color: rgba(246,245,240,0.4); }
.footer-subscribe button {
  background: none; border: none; color: var(--accent); font-size: 15px;
  cursor: pointer; padding: 8px 0 8px 12px; transition: transform var(--transition-base);
}
.footer-subscribe button:hover { transform: translateX(4px); }
.footer-bottom { border-top: 1px solid var(--line-dark); padding: 20px 0; }
.footer-bottom span { font-size: 13px; color: rgba(246,245,240,0.5); }

/* ===== Responsive ===== */
@media (max-width: 991px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  .header-utility-inner { height: 56px; }
  .navbar-toggler { display: inline-flex; }
  .lang-label { display: none; }
  .btn-download-mini { display: none; }
  .header-search-row { padding: 10px 0; }
  .search-box { height: 46px; }
  .header-categories { display: none; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; padding: 40px 0 32px; }
  .article-nav { grid-template-columns: 1fr; }
  .article-content { font-size: 16px; line-height: 1.85; }
  .article-content table { font-size: 13px; }
  .article-content table th, .article-content table td { padding: 8px 10px; }
  .article-head h1 { font-size: 1.5rem; line-height: 1.35; }
  .article-cover img { aspect-ratio: 16/10; }
}
@media (max-width: 575px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .search-box { padding-left: 14px; }
  .search-btn { padding: 0 16px; font-size: 13px; }
  .article-nav { gap: 14px; }
  .article-nav a { padding: 12px 14px; }
  .related-card .related-body { padding: 16px; }
  .footer-bottom .container { flex-direction: column; justify-content: center; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* roulang page: category1 */
:root {
  --brand: #0C2B25;
  --brand-light: #145047;
  --brand-dark: #071E1A;
  --accent: #D8FF3E;
  --bg: #F6F5F0;
  --card-bg: #FFFFFF;
  --text-strong: #16181D;
  --text-body: #3E443F;
  --text-muted: #7D837D;
  --text-invert: #F6F5F0;
  --line: #E3E1D9;
  --line-dark: rgba(255,255,255,0.18);
  --alert: #E5602F;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --shadow-sm: 0 1px 2px rgba(12,43,37,0.06);
  --shadow-hover: 0 12px 32px rgba(12,43,37,0.10);
  --shadow-header: 0 4px 24px rgba(12,43,37,0.05);
  --transition: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  background: var(--bg);
  color: var(--text-body);
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--brand); text-decoration: none; transition: color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition); }
a:hover { color: var(--brand-light); }
button { font-family: inherit; }
h1, h2, h3, h4, h5, h6 { color: var(--text-strong); line-height: 1.3; margin: 0 0 0.5em; }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 600;
  border: 1.5px solid transparent;
  transition: all var(--transition);
  line-height: 1.2;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn-accent {
  background: var(--accent);
  color: var(--brand-dark);
  padding: 14px 32px;
  min-height: 56px;
  font-size: 16px;
}
.btn-accent:hover { background: #e2ff5e; color: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(216,255,62,0.25); }
.btn-outline {
  background: transparent;
  color: var(--brand);
  border-color: var(--brand);
  padding: 13px 32px;
  min-height: 56px;
  font-size: 16px;
}
.btn-outline:hover { background: var(--brand); color: #fff; transform: translateY(-2px); }
.btn-sm {
  min-height: 36px;
  padding: 8px 20px;
  font-size: 14px;
  border-radius: 999px;
}
.btn-dark-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
  padding: 10px 24px;
  font-size: 14px;
}
.btn-dark-outline:hover { background: #fff; color: var(--brand); border-color: #fff; }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand);
  font-weight: 600;
}
.text-link i { transition: transform var(--transition); }
.text-link:hover i { transform: translateX(4px); }

/* Header */
.site-header {
  position: relative;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(246,245,240,0.92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-header);
}
.header-utility {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0 8px;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--brand);
  position: relative;
  flex-shrink: 0;
}
.logo-icon::before {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: 50%;
  border: 2px solid var(--brand);
}
.logo-icon::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 2px;
  background: var(--brand);
  top: 5px;
  left: 5px;
  transform: rotate(-30deg);
  border-radius: 2px;
}
.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--brand);
  letter-spacing: 0.02em;
}
.logo-text span {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 2px;
}
.utility-right {
  display: flex;
  align-items: center;
  gap: 18px;
}
.utility-download {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  transition: all var(--transition);
}
.utility-download:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-1px); }
.utility-lang {
  font-size: 13px;
  color: var(--text-muted);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}
.nav-toggle .bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active .bar:nth-child(2) { opacity: 0; }
.nav-toggle.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.header-search {
  padding: 6px 0 14px;
  display: flex;
  justify-content: center;
}
.search-box {
  position: relative;
  width: 100%;
  max-width: 620px;
  height: 52px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex;
  align-items: center;
  padding: 0 6px 0 20px;
  transition: all var(--transition);
}
.search-box:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(216,255,62,0.25);
  width: 101%;
}
.search-icon {
  color: var(--text-muted);
  flex-shrink: 0;
  margin-right: 10px;
}
.search-box input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 15px;
  color: var(--text-strong);
  min-width: 0;
}
.search-box input::placeholder { color: var(--text-muted); }
.search-btn {
  height: 40px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--brand);
  color: var(--accent);
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.search-btn:hover { background: var(--brand-light); color: #fff; }
.search-suggest {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: #fff;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hover);
  padding: 8px;
  display: none;
  z-index: 50;
}
.search-box:focus-within .search-suggest { display: block; }
.search-suggest a {
  display: block;
  padding: 10px 16px;
  border-radius: 8px;
  color: var(--text-body);
  font-size: 14px;
}
.search-suggest a:hover { background: var(--bg); color: var(--brand); }

.header-categories {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 32px;
  padding: 8px 0 16px;
}
.cat-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  padding: 6px 2px;
  position: relative;
  transition: color var(--transition);
}
.cat-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.cat-link:hover { color: var(--brand); }
.cat-link.active { color: var(--brand); font-weight: 700; }
.cat-link.active::after { width: 28px; }

/* Hero */
.category-hero {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  color: var(--text-invert);
  overflow: hidden;
}
.category-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12,43,37,0.94) 0%, rgba(12,43,37,0.78) 50%, rgba(12,43,37,0.5) 100%);
}
.category-hero .container { position: relative; z-index: 2; padding-top: 70px; padding-bottom: 50px; }
.breadcrumb-nav {
  font-size: 13px;
  margin-bottom: 20px;
  color: rgba(255,255,255,0.7);
}
.breadcrumb-nav a { color: rgba(255,255,255,0.7); }
.breadcrumb-nav a:hover { color: var(--accent); }
.breadcrumb-nav .sep { margin: 0 8px; opacity: 0.5; }
.breadcrumb-nav .current { color: var(--accent); }
.category-hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.category-hero .container > p {
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin-bottom: 0;
  line-height: 1.7;
}
.hero-scroll-down {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  font-size: 13px;
  color: rgba(255,255,255,0.7);
}
.hero-scroll-down i { animation: floatDown 2s ease-in-out infinite; }
@keyframes floatDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* 内容主体 */
.category-main { padding: clamp(3.5rem, 7vw, 5rem) 0; }
.category-layout {
  display: grid;
  grid-template-columns: 38% 62%;
  gap: 48px;
}
.anchor-nav {
  position: sticky;
  top: 120px;
  align-self: start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
}
.anchor-nav h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.anchor-nav ul { list-style: none; padding: 0; margin: 0; }
.anchor-nav li { margin-bottom: 4px; }
.anchor-nav a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--text-body);
  transition: all var(--transition);
}
.anchor-nav a:hover { background: var(--bg); color: var(--brand); }
.anchor-nav a.active {
  background: var(--brand);
  color: #fff;
  font-weight: 600;
}
.category-content { display: flex; flex-direction: column; gap: 40px; }
.content-section {
  background: #fff;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.content-section:hover { box-shadow: var(--shadow-hover); }
.content-section h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 16px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
  line-height: 1.4;
}
.content-section p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-body);
  margin-bottom: 16px;
}
.content-section p:last-of-type { margin-bottom: 20px; }
.content-section figure {
  margin: 20px 0 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg);
}
.content-section figure img {
  width: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
  aspect-ratio: 16/9;
}
.content-section figure figcaption {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  padding: 10px 16px;
  background: var(--bg);
}

/* CTA条 */
.cta-strip {
  background: var(--brand);
  padding: 44px 0;
  position: relative;
  overflow: hidden;
}
.cta-strip::before {
  content: "";
  position: absolute;
  top: -30px;
  right: -30px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
}
.cta-strip::after {
  content: "";
  position: absolute;
  bottom: -60px;
  left: 20%;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.08);
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}
.cta-inner h3 {
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}
.cta-inner p {
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  margin: 0;
}

/* FAQ */
.faq-section { padding: clamp(3.5rem, 7vw, 5rem) 0; background: var(--bg); }
.section-heading {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 36px;
}
.section-no {
  font-size: 20px;
  font-weight: 800;
  color: rgba(125,131,125,0.35);
  letter-spacing: 0.04em;
}
.section-heading h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--text-strong);
  margin: 0;
  position: relative;
}
.section-heading h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 8px;
}
.section-heading .section-sub {
  font-size: 14px;
  color: var(--text-muted);
  margin-left: auto;
}
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  background: none;
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-strong);
  cursor: pointer;
  text-align: left;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--brand); }
.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--brand);
  flex-shrink: 0;
  transition: all var(--transition);
}
.faq-question[aria-expanded="true"] .faq-icon {
  background: var(--brand);
  color: #fff;
  transform: rotate(45deg);
}
.faq-answer {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
  padding: 0 40px 22px 0;
}

/* 相关链接 */
.related-links {
  padding: 48px 0;
  background: #fff;
  border-top: 1px solid var(--line);
}
.related-links .container {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.related-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  transition: all var(--transition);
}
.related-link:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.related-link i { font-size: 13px; }

/* 页脚 */
.site-footer {
  background: var(--brand);
  color: var(--text-invert);
  padding-top: 60px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo .logo-icon {
  border-color: var(--text-invert);
}
.footer-logo .logo-icon::before { border-color: var(--text-invert); }
.footer-logo .logo-icon::after { background: var(--text-invert); }
.footer-logo .logo-text {
  color: var(--text-invert);
  font-size: 20px;
}
.footer-logo .logo-text span { color: rgba(255,255,255,0.6); }
.footer-brand-desc {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(255,255,255,0.7);
  margin-bottom: 20px;
  max-width: 260px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  transition: all var(--transition);
}
.footer-social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--brand-dark);
  transform: translateY(-2px);
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
}
.footer-col ul a:hover { color: var(--accent); }
.footer-contact {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  margin-bottom: 10px;
}
.footer-subscribe {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line-dark);
  margin-top: 18px;
  padding-bottom: 4px;
}
.footer-subscribe input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 8px 0;
  color: #fff;
  font-size: 14px;
  min-width: 0;
}
.footer-subscribe input::placeholder { color: rgba(255,255,255,0.4); }
.footer-subscribe button {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 6px 10px;
  font-size: 14px;
  transition: transform var(--transition);
}
.footer-subscribe button:hover { transform: translateX(4px); }
.footer-bottom {
  border-top: 1px solid var(--line-dark);
  padding: 18px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* 响应式 */
@media (max-width: 991.98px) {
  .header-categories { gap: 20px; }
  .category-layout { grid-template-columns: 1fr; gap: 32px; }
  .anchor-nav {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 16px;
  }
  .anchor-nav h3 { width: 100%; margin-bottom: 8px; border-bottom: none; padding-bottom: 4px; }
  .anchor-nav ul { display: flex; flex-wrap: wrap; gap: 8px; }
  .anchor-nav li { margin-bottom: 0; }
  .anchor-nav a { padding: 8px 14px; font-size: 14px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767.98px) {
  .utility-lang { display: none; }
  .nav-toggle { display: flex; }
  .utility-download { padding: 6px 12px; font-size: 13px; }
  .header-search { padding-bottom: 8px; }
  .header-categories {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 8px 16px;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(246,245,240,0.98);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-header);
    z-index: 99;
  }
  .header-categories.open { display: flex; }
  .cat-link {
    display: block;
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    font-size: 15px;
  }
  .cat-link::after { display: none; }
  .cat-link.active { background: rgba(12,43,37,0.06); }
  .category-hero { min-height: 230px; }
  .category-hero .container { padding-top: 50px; padding-bottom: 36px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .cta-inner .btn { width: 100%; }
  .search-box { max-width: 100%; }
  .search-box:focus-within { width: 100%; }
  .content-section { padding: 24px 20px; }
  .content-section h2 { font-size: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 575.98px) {
  .container { padding-left: 18px; padding-right: 18px; }
  .logo-text { font-size: 19px; }
  .search-btn { padding: 0 16px; font-size: 13px; }
  .category-main { padding: 2.5rem 0; }
  .content-section p { font-size: 14.5px; }
  .related-links .container { flex-direction: column; }
  .related-link { justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* roulang page: category2 */
:root {
  --brand: #0C2B25;
  --brand-light: #145047;
  --brand-dark: #071E1A;
  --accent: #D8FF3E;
  --bg: #F6F5F0;
  --white: #FFFFFF;
  --text-strong: #16181D;
  --text-body: #3E443F;
  --text-muted: #7D837D;
  --text-invert: #F6F5F0;
  --line: #E3E1D9;
  --line-dark: rgba(255,255,255,0.18);
  --alert: #E5602F;
  --radius: 12px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(12,43,37,0.06);
  --shadow-md: 0 12px 32px rgba(12,43,37,0.10);
  --shadow-header: 0 4px 24px rgba(12,43,37,0.05);
  --transition: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --space-section: clamp(4rem, 9vw, 7rem);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--brand); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--brand-light); }
button, input { font-family: inherit; }
ul, ol { list-style: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(246, 245, 240, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-header);
  transition: box-shadow var(--transition), background var(--transition);
}
.header-utility {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  padding-bottom: 10px;
}
.brand-logo { display: inline-flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 2px solid var(--brand);
  position: relative;
  flex-shrink: 0;
}
.logo-icon::before {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  border: 2px solid var(--brand);
  border-left-color: transparent;
}
.logo-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px; height: 6px;
  background: var(--brand);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.logo-text { font-size: 20px; font-weight: 800; color: var(--brand); letter-spacing: 0.02em; }
.logo-text span { font-size: 12px; color: var(--text-muted); margin-left: 2px; font-weight: 500; }
.header-actions { display: flex; align-items: center; gap: 18px; }
.header-download-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  border: 1px solid var(--brand);
  border-radius: 999px;
  padding: 7px 18px;
  transition: all var(--transition);
}
.header-download-link:hover { background: var(--brand); color: #fff; text-decoration: none; }
.header-lang { font-size: 13px; color: var(--text-muted); }
.navbar-toggler { border: none; background: none; font-size: 22px; color: var(--brand); line-height: 1; padding: 4px 8px; }
.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(216,255,62,0.35); border-radius: 8px; }
.search-row { padding-bottom: 12px; }
.search-box {
  display: flex;
  align-items: center;
  height: 52px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 0 6px 0 22px;
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}
.search-box:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(216,255,62,0.25);
  transform: scale(1.008);
}
.search-box .search-icon { color: var(--text-muted); font-size: 15px; margin-right: 12px; }
.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 15px;
  color: var(--text-strong);
}
.search-box input::placeholder { color: #a2a8a2; }
.search-box button {
  height: 40px;
  padding: 0 28px;
  border-radius: 999px;
  border: none;
  background: var(--brand);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: background var(--transition), box-shadow var(--transition);
}
.search-box button:hover { background: var(--brand-light); }
.search-suggest {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--line);
  z-index: 105;
  padding: 10px;
  display: none;
}
.search-suggest a { display: block; padding: 9px 14px; border-radius: 8px; color: var(--text-body); font-size: 14px; }
.search-suggest a:hover { background: #f1f0e9; color: var(--brand); text-decoration: none; }

.header-categories {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 32px;
  padding: 10px 0 14px;
}
.cat-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  position: relative;
  padding-bottom: 6px;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.cat-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: all var(--transition);
  transform: translateX(-50%);
}
.cat-link:hover { color: var(--brand); text-decoration: none; }
.cat-link.active { color: var(--brand); font-weight: 600; }
.cat-link.active::after { width: 24px; }

.offcanvas { background: var(--bg); width: 320px !important; }
.offcanvas-header { border-bottom: 1px solid var(--line); padding: 20px 24px; }
.offcanvas-header .btn-close { font-size: 14px; }
.offcanvas-nav { padding: 8px 0; }
.offcanvas-nav a {
  display: flex;
  align-items: center;
  min-height: 48px;
  border-bottom: 1px solid var(--line);
  padding: 0 24px;
  color: var(--text-body);
  font-size: 15px;
  font-weight: 500;
}
.offcanvas-nav a:hover { background: #f1f0e9; color: var(--brand); text-decoration: none; }
.offcanvas-nav a.active { color: var(--brand); font-weight: 700; }

.page-hero {
  position: relative;
  overflow: hidden;
  background: var(--brand-dark);
  padding: 76px 0 62px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(7,30,26,0.94) 20%, rgba(12,43,37,0.75) 80%);
}
.hero-inner { position: relative; z-index: 1; max-width: 780px; }
.hero-breadcrumb { font-size: 13px; color: rgba(246,245,240,0.65); margin-bottom: 22px; }
.hero-breadcrumb a { color: rgba(246,245,240,0.75); }
.hero-breadcrumb span { color: var(--accent); }
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-invert);
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin-bottom: 18px;
}
.hero-sub { font-size: 16px; color: rgba(246,245,240,0.8); max-width: 560px; line-height: 1.8; }

.content-wrap { padding: var(--space-section) 0; }
.anchor-aside { position: sticky; top: 190px; align-self: flex-start; }
.anchor-box {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
}
.anchor-title {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.anchor-box a {
  display: flex;
  align-items: center;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  color: var(--text-body);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
  gap: 10px;
}
.anchor-box a:last-child { border-bottom: none; }
.anchor-box a::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--line);
  transition: background var(--transition);
  flex-shrink: 0;
}
.anchor-box a:hover { color: var(--brand); text-decoration: none; }
.anchor-box a:hover::before { background: var(--accent); }

.content-main { padding-left: 16px; }
.content-section { margin-bottom: 64px; scroll-margin-top: 180px; }
.section-no {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand);
  background: rgba(12,43,37,0.05);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.content-section h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text-strong);
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-lead { color: var(--text-muted); font-size: 15px; margin-bottom: 20px; }
.content-section p { font-size: 16px; line-height: 1.9; color: var(--text-body); margin-bottom: 18px; }
.content-section strong { color: var(--text-strong); font-weight: 600; }
.figure { margin: 28px 0; max-width: 70%; }
.figure img { border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.figure figcaption { font-size: 13px; color: var(--text-muted); text-align: center; margin-top: 10px; }

.faq-accordion { margin-top: 24px; }
.faq-accordion .accordion-item {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  border-radius: 0 !important;
}
.faq-accordion .accordion-header { background: transparent; border: none; }
.faq-accordion .accordion-button {
  background: transparent;
  box-shadow: none;
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-strong);
  padding: 20px 0;
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
}
.faq-accordion .accordion-button::after {
  display: none;
}
.faq-accordion .accordion-button::before {
  content: "+";
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 16px;
  font-weight: 400;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 1;
  transition: all var(--transition);
}
.faq-accordion .accordion-button:not(.collapsed) {
  background: transparent;
  color: var(--brand);
  box-shadow: none;
}
.faq-accordion .accordion-button:not(.collapsed)::before {
  background: var(--accent);
  color: var(--brand-dark);
  content: "−";
  transform: rotate(180deg);
}
.faq-accordion .accordion-button:focus { box-shadow: none; border-color: transparent; }
.faq-accordion .accordion-body {
  padding: 0 0 24px 40px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

.cta-band { background: var(--brand); color: var(--text-invert); padding: 64px 0; position: relative; overflow: hidden; }
.cta-band::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 1px solid rgba(216,255,62,0.15);
}
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; position: relative; z-index: 1; }
.cta-inner p { font-size: 19px; font-weight: 600; margin: 0; max-width: 480px; line-height: 1.6; color: var(--text-invert); }
.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 56px;
  padding: 0 36px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--brand-dark);
  font-weight: 700;
  font-size: 16px;
  border: none;
  transition: all var(--transition);
  flex-shrink: 0;
}
.btn-accent:hover { transform: translateY(-2px); filter: brightness(1.06); color: var(--brand-dark); box-shadow: 0 12px 28px rgba(216,255,62,0.2); text-decoration: none; }
.btn-accent:focus { outline: none; box-shadow: 0 0 0 3px rgba(216,255,62,0.4); }

.related-links { padding: 56px 0 88px; }
.related-links-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  border-top: 1px solid var(--line);
  padding-top: 36px;
}
.related-link-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--brand);
  transition: all var(--transition);
}
.related-link-item:hover { color: var(--brand-light); text-decoration: none; transform: translateX(2px); }
.related-link-item .fa-arrow-left, .related-link-item .fa-arrow-right { color: var(--brand); transition: transform var(--transition); }
.related-link-item:hover .fa-arrow-left { transform: translateX(-4px); }
.related-link-item:hover .fa-arrow-right { transform: translateX(4px); }

.site-footer { background: var(--brand); color: var(--text-invert); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 52px; }
.footer-logo { display: flex; align-items: center; gap: 10px; }
.footer-logo .logo-icon { border-color: var(--text-invert); }
.footer-logo .logo-icon::before { border-color: var(--text-invert); border-left-color: transparent; }
.footer-logo .logo-icon::after { background: var(--text-invert); }
.footer-logo .logo-text { color: var(--text-invert); }
.footer-logo .logo-text span { color: rgba(246,245,240,0.55); }
.footer-brand-desc { font-size: 14px; color: rgba(246,245,240,0.72); line-height: 1.8; margin-top: 18px; max-width: 260px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.28);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-invert);
  font-size: 15px;
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--accent); color: var(--brand-dark); border-color: var(--accent); text-decoration: none; transform: translateY(-2px); }
.footer-col h4 { font-size: 14px; color: rgba(246,245,240,0.55); margin-bottom: 20px; font-weight: 600; letter-spacing: 0.08em; }
.footer-col ul { padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { color: rgba(246,245,240,0.85); font-size: 14px; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--accent); text-decoration: none; }
.footer-contact { font-size: 14px; color: rgba(246,245,240,0.75); margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: rgba(246,245,240,0.4); width: 16px; }
.footer-subscribe {
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.28);
  padding-bottom: 4px;
  margin-top: 20px;
  gap: 6px;
}
.footer-subscribe input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-invert);
  font-size: 14px;
  padding: 6px 0;
}
.footer-subscribe input::placeholder { color: rgba(246,245,240,0.4); }
.footer-subscribe button { background: none; border: none; color: var(--accent); font-size: 15px; padding: 4px 6px; cursor: pointer; }
.footer-subscribe button:hover { transform: translateX(3px); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.18); padding: 22px 0; font-size: 13px; color: rgba(246,245,240,0.6); }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }

@media (max-width: 991px) {
  .header-categories { display: none; }
  .anchor-aside { position: static; margin-bottom: 32px; }
  .anchor-box { display: flex; flex-wrap: wrap; gap: 8px 16px; }
  .anchor-title { width: 100%; margin-bottom: 8px; }
  .anchor-box a { border-bottom: none; padding: 8px 12px; background: #f1f0e9; border-radius: 999px; font-size: 14px; }
  .anchor-box a::before { display: none; }
  .content-main { padding-left: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 767px) {
  .search-box { max-width: 100%; }
  .search-box button { padding: 0 18px; }
  .page-hero { padding: 52px 0 44px; }
  .hero-sub { font-size: 15px; }
  .cta-band { padding: 44px 0; }
  .cta-inner p { font-size: 17px; }
  .content-section { margin-bottom: 48px; }
  .figure { max-width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .site-footer { padding-top: 44px; }
}

@media (max-width: 575px) {
  .header-utility { padding-top: 12px; }
  .logo-text { font-size: 18px; }
  .header-actions { gap: 12px; }
  .header-download-link { padding: 6px 14px; font-size: 12px; }
  .search-box { height: 48px; padding-left: 16px; }
  .search-box button { height: 36px; padding: 0 14px; font-size: 13px; }
  .content-wrap { padding: 48px 0; }
  .related-links { padding: 36px 0 56px; }
  .related-links-inner { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}