/* roulang page: index */
:root{
  --color-primary:#0F2B26;
  --color-primary-light:#18443B;
  --color-accent:#B8F047;
  --color-warm:#D9A643;
  --color-bg:#F4F4EF;
  --color-dark:#0B1D1A;
  --color-text:#1A1D1B;
  --color-text-secondary:#5B6660;
  --color-border:rgba(0,0,0,0.08);
  --color-border-dark:rgba(255,255,255,0.08);
  --radius-card:10px;
  --radius-large:14px;
  --shadow-card:0 4px 12px rgba(23,40,35,0.06);
  --shadow-hover:0 8px 24px rgba(23,40,35,0.14);
  --shadow-dark:0 8px 32px rgba(0,0,0,0.3);
  --transition:all .3s cubic-bezier(.4,0,.2,1);
  --container-max:1200px;
  --gap-section:clamp(56px,8vw,96px);
  --font-main:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-number:"DIN Alternate","Arial Narrow",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-main);background:var(--color-bg);color:var(--color-text);line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:var(--color-primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--color-primary-light)}
button{font-family:var(--font-main);cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none}
input,textarea{font-family:var(--font-main)}
.container{max-width:var(--container-max);margin:0 auto;padding-left:clamp(16px,4vw,48px);padding-right:clamp(16px,4vw,48px)}
.section-pad{padding-top:var(--gap-section);padding-bottom:var(--gap-section)}
.section-title{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.3;display:flex;align-items:center;gap:12px;margin-bottom:8px}
.section-title:before{content:"";display:inline-block;width:4px;height:18px;background:var(--color-accent);border-radius:2px;flex-shrink:0}
.section-sub{color:var(--color-text-secondary);font-size:15px;max-width:600px}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.revealed{opacity:1;transform:translateY(0)}
/* ===== 倒计时条 ===== */
.top-countdown{background:var(--color-dark);height:44px;display:flex;align-items:center;width:100%;color:#fff;border-bottom:1px solid rgba(255,255,255,0.04)}
.countdown-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.countdown-label{font-size:13px;color:rgba(255,255,255,0.72);display:inline-flex;align-items:center;gap:8px;letter-spacing:.3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.countdown-label .fa-clock{color:var(--color-accent);font-size:12px}
.countdown-timer{display:flex;align-items:center;gap:6px}
.count-unit{display:inline-flex;align-items:center;gap:6px}
.count-num{font-family:var(--font-number);color:var(--color-accent);font-size:18px;font-weight:700;min-width:32px;text-align:center;display:inline-block;line-height:1;transition:transform .5s ease,opacity .5s ease}
.count-num.flip{animation:numFlip .5s ease}
@keyframes numFlip{0%{transform:translateY(6px);opacity:.3}100%{transform:translateY(0);opacity:1}}
.count-unit-label{font-size:12px;color:rgba(255,255,255,0.5)}
.count-sep{color:rgba(255,255,255,0.25);font-size:14px}
/* ===== 导航 ===== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(244,244,239,0.94);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border);transition:var(--transition)}
.site-header.scrolled{background:rgba(244,244,239,0.97);box-shadow:0 2px 16px rgba(0,0,0,0.05)}
.header-inner{transition:padding .3s ease}
.header-top{display:flex;align-items:center;justify-content:space-between;padding:22px 0 16px;transition:padding .3s ease}
.site-header.scrolled .header-top{padding:12px 0 10px}
.logo{display:inline-flex;align-items:baseline;gap:4px;font-weight:800;font-size:24px;letter-spacing:-.5px;color:var(--color-primary)}
.logo-text{color:var(--color-primary)}
.logo-suffix{font-size:13px;font-weight:600;color:var(--color-accent);background:var(--color-primary);padding:2px 7px;border-radius:4px;margin-left:2px;letter-spacing:.5px}
.logo:hover{color:var(--color-primary)}
.header-tools{display:flex;align-items:center;gap:12px}
.search-toggle{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;border:1px solid var(--color-border);color:var(--color-primary);font-size:14px;transition:var(--transition);background:rgba(255,255,255,0.6)}
.search-toggle:hover{border-color:var(--color-primary);background:var(--color-primary);color:var(--color-accent)}
.hot-entry{display:inline-flex;align-items:center;font-size:12px;font-weight:600;color:var(--color-primary);background:var(--color-accent);border-radius:20px;padding:4px 14px;line-height:1.6;transition:var(--transition)}
.hot-entry:hover{background:var(--color-primary);color:#fff}
.nav-toggle{display:none;width:34px;height:34px;align-items:center;justify-content:center;border-radius:8px;border:1px solid var(--color-border);color:var(--color-primary);font-size:15px}
.nav-toggle:hover{background:var(--color-primary);color:var(--color-accent)}
.main-nav{transition:var(--transition)}
.nav-list{display:flex;gap:4px;padding-bottom:12px;flex-wrap:wrap}
.nav-link{display:inline-block;padding:8px 14px;font-size:15px;font-weight:500;color:var(--color-text);border-radius:6px;position:relative;transition:var(--transition)}
.nav-link:after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--color-accent);border-radius:2px;transform:scaleX(0);transform-origin:center;transition:var(--transition)}
.nav-link:hover{color:var(--color-primary);background:rgba(15,43,38,0.04)}
.nav-link.active{color:var(--color-primary);font-weight:700}
.nav-link.active:after{transform:scaleX(1)}
.nav-link:focus-visible,.search-toggle:focus-visible,.nav-toggle:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
.search-pop{position:absolute;top:calc(100% + 8px);right:0;background:#fff;border:1px solid var(--color-border);border-radius:10px;box-shadow:var(--shadow-hover);padding:10px;width:280px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:var(--transition);z-index:99}
.search-pop.active{opacity:1;visibility:visible;transform:translateY(0)}
.search-pop input{width:100%;border:1px solid var(--color-border);border-radius:6px;padding:8px 12px;font-size:14px;outline:none;background:var(--color-bg);transition:var(--transition)}
.search-pop input:focus{border-color:var(--color-primary)}
/* ===== Hero ===== */
.hero{background:var(--color-bg);padding-top:clamp(40px,6vw,72px);padding-bottom:var(--gap-section);overflow:hidden}
.hero-row{align-items:center}
.hero-main{padding-right:24px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--color-primary-light);background:rgba(184,240,71,0.25);border:1px solid rgba(184,240,71,0.5);border-radius:30px;padding:5px 14px;margin-bottom:20px;letter-spacing:.3px}
.hero-badge:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--color-accent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.85)}}
.hero-text h1{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.2;color:var(--color-primary);letter-spacing:-.5px;margin-bottom:16px}
.hero-text h1 .accent{color:var(--color-primary-light);background:linear-gradient(transparent 62%,rgba(184,240,71,0.6) 62%);padding:0 2px}
.hero-subtitle{font-size:16px;line-height:1.7;color:var(--color-text-secondary);max-width:480px;margin-bottom:28px}
.hero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.hero-note{font-size:14px;color:var(--color-text-secondary);display:flex;align-items:center;gap:10px}
.hero-note:before{content:"";width:24px;height:1px;background:var(--color-accent)}
.hero-aside{position:relative}
.hero-media{position:relative;border-radius:var(--radius-large);overflow:hidden;box-shadow:var(--shadow-hover);transform:rotate(1deg);transition:var(--transition)}
.hero-media:hover{transform:rotate(0deg) scale(1.01)}
.hero-media img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.hero-status{position:absolute;left:16px;bottom:16px;background:rgba(11,29,26,0.82);color:var(--color-accent);font-size:13px;font-weight:600;padding:6px 14px;border-radius:30px;backdrop-filter:blur(4px);letter-spacing:.3px}
/* ===== 卖点区 ===== */
.features{background:var(--color-bg);padding-bottom:var(--gap-section)}
.features-grid{gap:24px 0}
.feature-large{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-card);position:relative;transition:var(--transition);height:100%;overflow:hidden}
.feature-large:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.feature-large .feature-num{position:absolute;top:20px;right:24px;font-family:var(--font-number);font-size:44px;font-weight:700;color:rgba(15,43,38,0.07);line-height:1}
.feature-icon{width:52px;height:52px;border-radius:12px;background:var(--color-primary);color:var(--color-accent);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:20px}
.feature-large h3{font-size:clamp(20px,2vw,24px);font-weight:700;color:var(--color-primary);margin-bottom:10px;line-height:1.35}
.feature-large p{font-size:14px;line-height:1.7;color:var(--color-text-secondary);max-width:90%}
.feature-stack{display:flex;flex-direction:column;gap:24px;height:100%}
.feature-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-card);padding:24px 26px;box-shadow:var(--shadow-card);position:relative;transition:var(--transition);flex:1}
.feature-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.feature-card .feature-num{position:absolute;top:16px;right:20px;font-family:var(--font-number);font-size:30px;font-weight:700;color:rgba(15,43,38,0.06);line-height:1}
.feature-card h3{font-size:18px;font-weight:700;color:var(--color-primary);margin-bottom:6px}
.feature-card p{font-size:13px;line-height:1.65;color:var(--color-text-secondary)}
/* ===== 图墙 ===== */
.gallery{background:var(--color-dark);padding-top:var(--gap-section);padding-bottom:var(--gap-section);color:#fff}
.gallery .section-title{color:#fff}
.gallery .section-title:before{background:var(--color-accent)}
.gallery .section-sub{color:rgba(255,255,255,0.6)}
.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:36px}
.gallery-item{position:relative;border-radius:var(--radius-large);overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,0.3);transition:var(--transition)}
.gallery-item:nth-child(4){transform:translateX(24px)}
.gallery-item:nth-child(2){transform:translateY(12px)}
.gallery-item:hover{box-shadow:0 14px 40px rgba(0,0,0,0.5)}
.gallery-item:hover img{transform:scale(1.02)}
.gallery-item img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .6s ease}
.gallery-caption{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(180deg,transparent,rgba(0,0,0,0.7));padding:40px 20px 14px;transition:var(--transition)}
.gallery-item:hover .gallery-caption{transform:translateY(-6px)}
.gallery-caption span{font-size:13px;color:rgba(255,255,255,0.9);font-weight:500;letter-spacing:.3px}
/* ===== CTA ===== */
.cta-section{background:var(--color-bg);padding-top:var(--gap-section);padding-bottom:var(--gap-section)}
.cta-inner{max-width:800px;margin:0 auto;text-align:center;background:#fff;border:1px solid var(--color-border);border-radius:20px;padding:clamp(32px,6vw,64px) clamp(24px,4vw,48px);box-shadow:var(--shadow-card);position:relative;overflow:hidden}
.cta-inner:before{content:"";position:absolute;top:-40px;right:-40px;width:140px;height:140px;border-radius:50%;background:rgba(184,240,71,0.12)}
.cta-inner:after{content:"";position:absolute;bottom:-30px;left:-30px;width:100px;height:100px;border-radius:50%;background:rgba(15,43,38,0.05)}
.cta-inner h2{font-size:clamp(22px,3vw,30px);font-weight:700;color:var(--color-primary);margin-bottom:14px;line-height:1.3;position:relative;z-index:1}
.cta-inner h2 .accent{color:var(--color-primary-light);background:linear-gradient(transparent 60%,rgba(184,240,71,0.6) 60%);padding:0 3px}
.cta-inner p{font-size:15px;color:var(--color-text-secondary);margin-bottom:28px;position:relative;z-index:1}
.cta-actions{display:flex;justify-content:center;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:28px;position:relative;z-index:1}
.cta-points{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;font-size:14px;color:var(--color-text-secondary);position:relative;z-index:1}
.cta-points span{display:inline-flex;align-items:center;gap:8px}
.cta-points span:before{content:"";width:5px;height:5px;border-radius:50%;background:var(--color-accent)}
/* ===== FAQ ===== */
.faq-section{background:var(--color-bg);padding-bottom:var(--gap-section)}
.faq-layout{display:grid;grid-template-columns:30% 70%;gap:48px;align-items:start}
.faq-left{padding-top:8px}
.faq-left .section-title{margin-bottom:12px}
.faq-guide{font-size:14px;line-height:1.7;color:var(--color-text-secondary)}
.faq-list{border-top:1px solid var(--color-border)}
.faq-item{border-bottom:1px solid var(--color-border)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 4px;font-size:16px;font-weight:600;color:var(--color-primary);text-align:left;transition:var(--transition);line-height:1.5}
.faq-q:hover{color:var(--color-primary-light)}
.faq-icon{font-size:14px;color:var(--color-text-secondary);transition:var(--transition);flex-shrink:0}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--color-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease}
.faq-a p{font-size:14px;line-height:1.7;color:var(--color-text-secondary);padding:0 4px 20px}
.faq-q:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:4px}
/* ===== 资讯列表 ===== */
.news-section{background:#fff;padding-top:var(--gap-section);padding-bottom:var(--gap-section);border-top:1px solid var(--color-border)}
.news-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:32px}
.more-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--color-primary);padding:6px 14px;border-radius:20px;border:1px solid var(--color-border);transition:var(--transition)}
.more-link:hover{border-color:var(--color-primary);background:var(--color-primary);color:var(--color-accent)}
.more-link i{transition:transform .3s ease}
.more-link:hover i{transform:translateX(4px)}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-card);overflow:hidden;transition:var(--transition)}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:rgba(15,43,38,0.12)}
.news-card a{display:flex;gap:20px;padding:16px;align-items:center}
.news-thumb{width:160px;height:100px;border-radius:8px;overflow:hidden;flex-shrink:0;background:var(--color-primary)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-info{flex:1;min-width:0}
.news-info h3{font-size:16px;font-weight:600;color:var(--color-text);margin-bottom:6px;line-height:1.4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:var(--transition)}
.news-card:hover .news-info h3{color:var(--color-primary)}
.news-info p{font-size:14px;color:var(--color-text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px}
.news-meta{display:flex;align-items:center;gap:12px}
.badge{display:inline-block;font-size:12px;font-weight:600;color:var(--color-primary);background:rgba(15,43,38,0.07);border-radius:4px;padding:2px 10px;line-height:1.7}
.news-meta time{font-size:13px;color:var(--color-text-secondary)}
.news-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:200px;background:rgba(0,0,0,0.02);border:1px dashed rgba(0,0,0,0.12);border-radius:var(--radius-card);color:var(--color-text-secondary);font-size:14px;gap:10px}
.news-empty i{font-size:30px;color:rgba(15,43,38,0.2)}
/* ===== 页脚 ===== */
.site-footer{background:var(--color-dark);color:rgba(255,255,255,0.75);padding-top:64px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:48px}
.footer-logo{font-size:22px;font-weight:800;color:#fff;margin-bottom:14px;display:flex;align-items:baseline;gap:4px}
.footer-logo span{font-size:12px;font-weight:600;color:var(--color-accent);background:rgba(255,255,255,0.08);padding:2px 8px;border-radius:4px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,0.55);max-width:260px}
.footer-col h4{font-size:13px;font-weight:600;color:#fff;margin-bottom:16px;position:relative;padding-left:12px}
.footer-col h4:before{content:"";position:absolute;left:0;top:4px;width:3px;height:14px;background:var(--color-accent);border-radius:2px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,0.55);transition:var(--transition);position:relative}
.footer-col a:hover{color:var(--color-accent);padding-left:4px}
.footer-col p,.footer-col li{font-size:14px;color:rgba(255,255,255,0.5);line-height:1.7}
.footer-bottom{border-top:1px solid var(--color-border-dark);padding-top:22px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,0.35)}
/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:12px 26px;border-radius:8px;border:1.5px solid transparent;transition:var(--transition);line-height:1.6;text-align:center}
.btn-primary{background:var(--color-primary);color:var(--color-accent)}
.btn-primary:hover{background:var(--color-primary-light);color:#fff;transform:translateY(-2px);box-shadow:0 6px 16px rgba(15,43,38,0.25)}
.btn-outline{border-color:var(--color-primary);color:var(--color-primary);background:transparent}
.btn-outline:hover{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-primary);transform:translateY(-2px)}
.btn-dark{background:var(--color-primary);color:var(--color-accent)}
.btn-dark:hover{background:#fff;color:var(--color-primary);transform:translateY(-2px)}
.btn .fa-arrow-right{transition:transform .3s ease}
.btn:hover .fa-arrow-right{transform:translateX(4px)}
.btn:active{transform:translateY(0);box-shadow:none}
/* ===== Foundation 覆盖 ===== */
.grid-padding-x > .cell{padding-left:16px;padding-right:16px}
@media (max-width:640px){
  .grid-padding-x > .cell{padding-left:0;padding-right:0}
}
.row{max-width:var(--container-max);margin:0 auto}
.cell{width:100%}
.large-7{width:58.3333%}
.large-5{width:41.6667%}
@media (max-width:1024px){
  .large-7,.large-5{width:50%}
}
@media (max-width:640px){
  .large-7,.large-5{width:100%}
}
/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero-media{transform:rotate(0)}
  .gallery-item:nth-child(2){transform:translateY(0)}
  .gallery-item:nth-child(4){transform:translateX(12px)}
  .feature-large p{max-width:100%}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  .container{padding-left:20px;padding-right:20px}
  .countdown-label{display:none}
  .top-countdown{justify-content:center}
  .header-top{padding:16px 0 12px}
  .hot-entry{display:none}
  .nav-toggle{display:inline-flex}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:rgba(244,244,239,0.98);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border);box-shadow:0 8px 20px rgba(0,0,0,0.06)}
  .main-nav.open{display:block;animation:menuFade .3s ease}
  @keyframes menuFade{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
  .nav-list{flex-direction:column;padding:12px 16px;gap:2px}
  .nav-link{display:block;padding:12px 12px;}
  .nav-link:after{display:none}
  .nav-link.active{background:var(--color-primary);color:var(--color-accent);border-radius:6px}
  .hero{padding-top:32px}
  .hero-text h1{font-size:28px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-aside{margin-top:28px}
  .hero-media{transform:rotate(0)}
  .features-grid .cell{padding-left:0;padding-right:0}
  .feature-large{padding:24px}
  .gallery-grid{grid-template-columns:1fr;gap:16px}
  .gallery-item:nth-child(2),.gallery-item:nth-child(4){transform:translateX(0)}
  .gallery-item img{aspect-ratio:16/10}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .faq-layout{grid-template-columns:1fr}
  .news-header{margin-bottom:20px}
  .news-card a{flex-direction:column;padding:14px;align-items:flex-start}
  .news-thumb{width:100%;height:120px}
  .news-info h3{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .footer-grid{grid-template-columns:1fr;gap:28px;margin-bottom:32px}
  .footer-bottom{flex-direction:column;justify-content:center;text-align:center}
}

/* roulang page: category1 */
:root {
  --color-primary: #0F2B26;
  --color-primary-light: #18443B;
  --color-accent: #B8F047;
  --color-warm: #F4F4EF;
  --color-deep: #0B1D1A;
  --color-text: #1A1D1B;
  --color-text-secondary: #5B6660;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-deep: rgba(255, 255, 255, 0.08);
  --color-amber: #D9A643;
  --radius-card: 10px;
  --radius-large: 14px;
  --shadow-card: 0 4px 12px rgba(23, 40, 35, 0.06);
  --shadow-hover: 0 8px 24px rgba(23, 40, 35, 0.14);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
  --space: clamp(56px, 8vw, 96px);
  --space-sm: 24px;
  --space-md: 32px;
  --space-lg: 48px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Arial Narrow", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
  background: var(--color-warm);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
  color: inherit;
}

input {
  font-family: inherit;
}

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

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: clamp(16px, 4vw, 48px);
  padding-right: clamp(16px, 4vw, 48px);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  z-index: 300;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 14px;
}
.skip-link:focus {
  left: 12px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-card);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1.5px solid transparent;
  background: transparent;
  transition: var(--transition);
  text-align: center;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: rgba(15, 43, 38, 0.75);
}
.btn-outline:hover {
  background: rgba(184, 240, 71, 0.18);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}
.btn-outline .fa-arrow-right {
  transition: transform 0.3s ease;
}
.btn-outline:hover .fa-arrow-right {
  transform: translateX(4px);
}

.section-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-primary);
  background: rgba(184, 240, 71, 0.24);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 244, 239, 0.94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 4px 16px rgba(23, 40, 35, 0.06);
}
.header-inner {
  padding-top: 20px;
  padding-bottom: 20px;
  transition: padding 0.3s ease;
}
.site-header.scrolled .header-inner {
  padding-top: 12px;
  padding-bottom: 12px;
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  flex-shrink: 0;
}
.logo-text {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  line-height: 1;
}
.logo-suffix {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-primary);
  border-radius: 4px;
  padding: 3px 8px;
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
}
.search-toggle,
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
  font-size: 16px;
  transition: var(--transition);
}
.search-toggle:hover,
.nav-toggle:hover {
  background: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
}
.hot-entry {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  background: rgba(184, 240, 71, 0.3);
  border: 1px solid rgba(184, 240, 71, 0.6);
  padding: 6px 14px;
  border-radius: 999px;
  transition: var(--transition);
  white-space: nowrap;
}
.hot-entry:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary);
}
.main-nav {
  margin-top: 14px;
  transition: margin 0.3s ease;
}
.site-header.scrolled .main-nav {
  margin-top: 10px;
}
.nav-list {
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav-link {
  position: relative;
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  padding: 0 0 10px;
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-link:hover::after {
  transform: scaleX(1);
}
.nav-link.active {
  color: var(--color-primary);
}
.nav-link.active::after {
  transform: scaleX(1);
}

.search-panel {
  display: none;
  background: rgba(244, 244, 239, 0.98);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}
.search-panel.open {
  display: block;
}
.search-panel-inner {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-panel input {
  flex: 1;
  height: 42px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0 16px;
  font-size: 14px;
  background: #fff;
  color: var(--color-text);
  transition: var(--transition);
}
.search-panel input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(184, 240, 71, 0.25);
}
.search-close {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 16px;
  transition: var(--transition);
}
.search-close:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ===== 分类页页头 ===== */
.category-hero {
  padding: clamp(48px, 7vw, 88px) 0 clamp(32px, 5vw, 56px);
  text-align: center;
}
.category-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-primary);
  letter-spacing: 0.01em;
  margin-bottom: 14px;
}
.category-hero .lead {
  max-width: 680px;
  margin: 0 auto 28px;
  color: var(--color-text-secondary);
  font-size: 17px;
  line-height: 1.75;
}
.category-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.cat-tag {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 18px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.cat-tag:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* ===== 图文交错版式 ===== */
.feature-row {
  padding: var(--space) 0;
  border-top: 1px solid var(--color-border);
}
.feature-row.tone-light {
  background: #fff;
}
.feature-row:first-of-type {
  border-top: 0;
}
.feature-grid {
  display: flex;
  align-items: center;
}
.feature-grid.reverse .feature-media {
  order: 2;
}
.feature-grid.reverse .feature-copy {
  order: 1;
}
.feature-media {
  min-height: 120px;
}
.feature-copy {
  min-height: 120px;
}
.media-wrap {
  position: relative;
  border-radius: var(--radius-large);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  aspect-ratio: 4 / 3;
  background: var(--color-deep);
}
.media-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.media-wrap:hover img {
  transform: scale(1.02);
}
.media-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  background: rgba(11, 29, 26, 0.8);
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.media-badge.badge-amber {
  color: #0B1D1A;
  background: rgba(217, 166, 67, 0.9);
}
.feature-index {
  display: block;
  font-family: var(--font-num);
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
  color: rgba(15, 43, 38, 0.13);
  margin-bottom: 10px;
}
.feature-copy h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-primary);
  border-left: 4px solid var(--color-accent);
  padding-left: 18px;
  margin-bottom: 16px;
}
.feature-lead {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.85;
  margin-bottom: 12px;
}
.feature-points {
  display: grid;
  gap: 10px;
  margin: 12px 0 24px;
  padding: 0;
}
.feature-points li {
  position: relative;
  padding-left: 28px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.feature-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: inset 0 0 0 1px rgba(15, 43, 38, 0.12);
}

/* ===== 深色数据区 ===== */
.stats-section {
  background: var(--color-deep);
  color: rgba(244, 244, 239, 0.85);
  padding: var(--space) 0;
}
.stats-head {
  max-width: 640px;
  margin-bottom: 40px;
}
.stats-head .section-kicker {
  color: var(--color-accent);
  background: rgba(184, 240, 71, 0.12);
}
.stats-head h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
  border-left: 4px solid var(--color-accent);
  padding-left: 18px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stats-item {
  text-align: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-deep);
  border-radius: var(--radius-large);
  padding: 32px 16px;
  transition: var(--transition);
}
.stats-item:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-4px);
}
.stats-number {
  font-family: var(--font-num);
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.1;
  margin-bottom: 6px;
}
.stats-label {
  font-size: 14px;
  color: rgba(244, 244, 239, 0.66);
  letter-spacing: 0.02em;
}

/* ===== CTA ===== */
.cta-section {
  padding: var(--space) 0;
}
.cta-inner {
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 18px;
  box-shadow: var(--shadow-card);
  padding: clamp(32px, 5vw, 56px) clamp(20px, 4vw, 48px);
}
.cta-inner h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.35;
  margin-bottom: 12px;
}
.cta-inner h2::after {
  content: "";
  display: block;
  width: 52px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 2px;
  margin: 16px auto 0;
}
.cta-inner .cta-text {
  max-width: 620px;
  margin: 14px auto 0;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.8;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 28px;
}
.cta-note {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.cta-note .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
  display: inline-block;
  flex-shrink: 0;
}

/* ===== FAQ ===== */
.faq-section {
  padding: var(--space) 0;
  border-top: 1px solid var(--color-border);
  background: #fff;
}
.faq-layout {
  display: grid;
  grid-template-columns: 30% 70%;
  gap: 48px;
  align-items: start;
}
.faq-head {
  position: sticky;
  top: 120px;
}
.faq-head h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--color-primary);
  border-left: 4px solid var(--color-accent);
  padding-left: 18px;
  line-height: 1.3;
  margin-bottom: 14px;
}
.faq-head p {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.75;
}
.faq-item {
  border-top: 1px solid var(--color-border);
}
.faq-item:last-child {
  border-bottom: 1px solid var(--color-border);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  text-align: left;
  transition: color 0.2s ease;
}
.faq-question:hover {
  color: var(--color-primary);
}
.faq-question i {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: transform 0.35s ease, color 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-question i {
  transform: rotate(135deg);
  color: var(--color-primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
}
.faq-answer p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  padding-bottom: 18px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-deep);
  color: rgba(244, 244, 239, 0.75);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-border-deep);
}
.footer-logo {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.2;
}
.footer-logo span {
  color: var(--color-accent);
}
.footer-brand p {
  max-width: 320px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 244, 239, 0.6);
}
.footer-col h4 {
  position: relative;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  padding-left: 12px;
  margin-bottom: 16px;
  text-transform: none;
}
.footer-col h4::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: var(--color-accent);
}
.footer-col li {
  margin-bottom: 10px;
  font-size: 14px;
}
.footer-col a {
  color: rgba(244, 244, 239, 0.7);
  transition: var(--transition);
}
.footer-col a:hover {
  color: var(--color-accent);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 20px;
  font-size: 12px;
  color: rgba(244, 244, 239, 0.4);
}

/* ===== 滚动入场 ===== */
.js .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: var(--delay, 0s);
}
.js .reveal.revealed {
  opacity: 1;
  transform: none;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .feature-grid {
    gap: 0;
  }
  .feature-grid .cell {
    width: calc(50% - 1.25rem);
  }
  .feature-media {
    width: calc(50% - 1.25rem);
  }
  .feature-copy {
    width: calc(50% - 1.25rem);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .header-top {
    gap: 10px;
  }
  .logo-text {
    font-size: 22px;
  }
  .logo-suffix {
    font-size: 12px;
    padding: 2px 6px;
  }
  .header-tools {
    gap: 8px;
  }
  .hot-entry {
    font-size: 12px;
    padding: 5px 10px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0;
    background: rgba(244, 244, 239, 0.98);
    border-bottom: 1px solid var(--color-border);
    padding: 0 clamp(16px, 4vw, 48px);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-6px);
    transition: var(--transition);
    box-shadow: 0 12px 24px rgba(23, 40, 35, 0.08);
  }
  .main-nav.open {
    visibility: visible;
    opacity: 1;
    transform: none;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 0 4px;
  }
  .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-link::after {
    display: none;
  }
  .category-hero .lead {
    font-size: 15px;
  }
  .cat-tag {
    font-size: 13px;
    padding: 6px 14px;
  }
  .feature-grid,
  .feature-grid.reverse {
    display: block;
  }
  .feature-grid .cell,
  .feature-media,
  .feature-copy {
    width: 100%;
  }
  .feature-media {
    margin-bottom: 24px;
  }
  .feature-grid.reverse .feature-media,
  .feature-grid.reverse .feature-copy {
    order: 0;
  }
  .feature-grid.reverse .feature-copy {
    margin-top: 24px;
  }
  .feature-copy h2 {
    font-size: 21px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats-item {
    padding: 24px 12px;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .faq-head {
    position: static;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .hot-entry {
    display: none;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .media-badge {
    font-size: 11px;
    padding: 5px 10px;
  }
}

/* roulang page: article */
:root {
  --color-primary: #0F2B26;
  --color-primary-light: #18443B;
  --color-accent: #B8F047;
  --color-warm: #D9A643;
  --color-bg: #F4F4EF;
  --color-dark: #0B1D1A;
  --color-text: #1A1D1B;
  --color-text-secondary: #5B6660;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-dark: rgba(255, 255, 255, 0.08);
  --radius-card: 10px;
  --radius-large: 14px;
  --shadow-card: 0 4px 12px rgba(23, 40, 35, 0.06);
  --shadow-hover: 0 8px 24px rgba(23, 40, 35, 0.14);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-number: "DIN Alternate", "Arial Narrow", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

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

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

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

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

ul,
ol {
  list-style: none;
}

::selection {
  background: var(--color-accent);
  color: var(--color-dark);
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: clamp(16px, 4vw, 48px);
  padding-right: clamp(16px, 4vw, 48px);
}

.site-main {
  min-height: 60vh;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  border-radius: 999px;
  border: 1.5px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  vertical-align: middle;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(15, 43, 38, 0.22);
}

.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-dark);
  transform: translateY(-2px);
}

.btn i {
  transition: transform 0.3s ease;
}

.btn:hover i {
  transform: translateX(4px);
}

.btn i.fa-arrow-left {
  transition: transform 0.3s ease;
}

.btn:hover i.fa-arrow-left {
  transform: translateX(-4px);
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 244, 239, 0.94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.header-inner {
  padding-top: 16px;
  padding-bottom: 16px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.scrolled .header-inner {
  padding-top: 10px;
  padding-bottom: 10px;
}

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

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-text {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.logo-suffix {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-primary);
  padding: 3px 12px;
  border-radius: 999px;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-toggle {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 50%;
  color: var(--color-primary);
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
}

.search-toggle:hover {
  background: rgba(15, 43, 38, 0.08);
}

.hot-entry {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  background: rgba(184, 240, 71, 0.35);
  padding: 7px 16px;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  transition: var(--transition);
}

.hot-entry:hover {
  background: var(--color-accent);
  color: var(--color-dark);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 50%;
  color: var(--color-primary);
  font-size: 18px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-toggle:hover {
  background: rgba(15, 43, 38, 0.08);
}

.main-nav {
  margin-top: 12px;
  max-height: 400px;
  overflow: hidden;
  transition: max-height 0.35s ease, margin-top 0.35s ease, opacity 0.3s ease;
}

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

.nav-link {
  display: inline-block;
  padding: 8px 20px 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-radius: 8px 8px 0 0;
  position: relative;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 0;
  height: 2px;
  background: transparent;
  border-radius: 2px;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--color-primary);
  background: rgba(15, 43, 38, 0.04);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 600;
}

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

/* 搜索浮层 */
.search-pop {
  position: fixed;
  top: 72px;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  width: min(90vw, 520px);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  box-shadow: 0 16px 48px rgba(23, 40, 35, 0.18);
  padding: 12px;
  display: flex;
  gap: 8px;
  z-index: 90;
  visibility: hidden;
  opacity: 0;
  transition: all 0.3s ease;
}

body.search-open .search-pop {
  visibility: visible;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.search-pop input {
  flex: 1;
  border: none;
  background: var(--color-bg);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--color-text);
  outline: none;
}

.search-pop input::placeholder {
  color: rgba(0, 0, 0, 0.35);
}

.search-submit {
  background: var(--color-primary);
  color: var(--color-accent);
  border: none;
  border-radius: 8px;
  padding: 0 22px;
  cursor: pointer;
  font-size: 15px;
  transition: var(--transition);
}

.search-submit:hover {
  background: var(--color-primary-light);
}

/* ===== 文章页头 ===== */
.page-header {
  background-color: var(--color-bg);
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center 30%;
  position: relative;
  padding: clamp(48px, 6vw, 80px) 0 clamp(36px, 5vw, 56px);
  border-bottom: 1px solid var(--color-border);
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(244, 244, 239, 0.9);
  backdrop-filter: blur(2px);
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  margin-bottom: 24px;
  color: var(--color-text-secondary);
}

.breadcrumb a {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
}

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

.breadcrumb .sep {
  color: rgba(0, 0, 0, 0.25);
  font-size: 12px;
}

.breadcrumb .current {
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 420px;
}

.page-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(15, 43, 38, 0.08);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 500;
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.page-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(184, 240, 71, 0.35);
}

.article-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

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

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

.meta-item i {
  color: var(--color-primary);
  opacity: 0.55;
  font-size: 14px;
}

.meta-divider {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.25);
  display: inline-block;
}

/* ===== 文章正文 ===== */
.article-section {
  padding: clamp(48px, 7vw, 80px) 0;
  background: var(--color-bg);
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text);
}

.article-body h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 48px;
  margin-bottom: 16px;
  padding-left: 16px;
  position: relative;
}

.article-body h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 4px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 2px;
}

.article-body h3 {
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--color-text);
}

.article-body h4 {
  font-size: 16px;
  font-weight: 700;
  margin-top: 24px;
  margin-bottom: 8px;
  color: var(--color-text);
}

.article-body p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

.article-body img {
  border-radius: var(--radius-large);
  margin: 24px 0;
  max-width: 100%;
  height: auto;
}

.article-body blockquote {
  border-left: 3px solid var(--color-accent);
  background: rgba(184, 240, 71, 0.1);
  padding: 18px 22px;
  margin: 24px 0;
  border-radius: 0 10px 10px 0;
  color: var(--color-text-secondary);
  font-style: italic;
  line-height: 1.7;
}

.article-body ul,
.article-body ol {
  margin: 16px 0 24px 24px;
  line-height: 1.8;
}

.article-body ul li {
  list-style: disc;
  padding-left: 4px;
  margin-bottom: 6px;
}

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

.article-body ol li {
  list-style: decimal;
  padding-left: 4px;
  margin-bottom: 6px;
}

.article-body ol li::marker {
  color: var(--color-primary);
  font-weight: 600;
}

.article-body pre {
  background: var(--color-dark);
  color: #E0E6E2;
  padding: 24px;
  border-radius: 10px;
  overflow-x: auto;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.7;
}

.article-body code {
  background: rgba(15, 43, 38, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 13px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.article-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.article-body th {
  background: var(--color-primary);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
}

.article-body td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.article-body tr:nth-child(even) {
  background: rgba(0, 0, 0, 0.02);
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 40px 0;
}

/* ===== 标签与分享 ===== */
.article-actions {
  max-width: 720px;
  margin: 40px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(15, 43, 38, 0.06);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 999px;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: default;
}

.tag:hover {
  background: var(--color-accent);
  color: var(--color-dark);
}

.share-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.share-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.share-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  background: transparent;
  border-radius: 50%;
  color: var(--color-primary);
  cursor: pointer;
  transition: var(--transition);
  font-size: 14px;
}

.share-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-dark);
  transform: translateY(-2px);
}

/* ===== 相关推荐 ===== */
.related-section {
  background: var(--color-bg);
  padding: 0 0 clamp(56px, 8vw, 80px);
}

.related-section .section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
}

.section-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--color-text);
  padding-left: 16px;
  position: relative;
  line-height: 1.3;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  width: 4px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-more {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.section-more:hover {
  color: var(--color-primary-light);
  gap: 10px;
}

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

.related-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.related-card .img-wrap {
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: rgba(0, 0, 0, 0.04);
}

.related-card .img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.related-card .card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-card .card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.5;
}

.related-card .card-excerpt {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.related-card .card-date {
  font-size: 13px;
  color: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  gap: 6px;
}

.related-card .card-date i {
  font-size: 12px;
}

/* ===== 返回栏目 ===== */
.back-section {
  padding: 8px 0 64px;
  background: var(--color-bg);
  text-align: center;
}

/* ===== 空状态 ===== */
.article-empty {
  max-width: 720px;
  margin: 0 auto;
  padding: 80px 32px;
  text-align: center;
  border: 2px dashed rgba(0, 0, 0, 0.12);
  border-radius: var(--radius-large);
  background: rgba(0, 0, 0, 0.02);
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.article-empty i {
  font-size: 44px;
  color: rgba(0, 0, 0, 0.2);
}

.article-empty h2 {
  font-size: 22px;
  font-weight: 700;
}

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

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: clamp(48px, 6vw, 72px) 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
}

.footer-brand .footer-logo {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}

.footer-brand .footer-logo span {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 16px;
  margin-left: 4px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  padding-left: 12px;
  position: relative;
  letter-spacing: 0.06em;
}

.footer-col h4::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  width: 3px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 2px;
}

.footer-col ul li {
  list-style: none;
  margin-bottom: 4px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  text-decoration: none;
  transition: var(--transition);
  display: inline-block;
  padding: 4px 0;
}

.footer-col a:hover {
  color: var(--color-accent);
  transform: translateX(4px);
}

.footer-col li {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  line-height: 1.7;
  padding: 4px 0;
}

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border-dark);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

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

@media (max-width: 768px) {
  .hot-entry {
    display: none;
  }

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

  .article-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .share-actions {
    width: 100%;
    justify-content: flex-end;
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
  }

  .main-nav.open {
    max-height: 400px;
    margin-top: 12px;
    opacity: 1;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-radius: 0 0 16px 16px;
    padding: 12px;
    gap: 4px;
  }

  .nav-link {
    padding: 12px 20px;
    border-radius: 10px;
    display: block;
  }

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

  .nav-link.active {
    background: rgba(184, 240, 71, 0.22);
    color: var(--color-primary);
  }

  .header-inner {
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .logo-text {
    font-size: 24px;
  }

  .logo-suffix {
    font-size: 13px;
    padding: 2px 10px;
  }

  .page-header {
    padding-top: 40px;
    padding-bottom: 36px;
  }

  .breadcrumb {
    font-size: 12px;
    gap: 6px;
  }

  .breadcrumb .current {
    max-width: 200px;
  }

  .article-title {
    font-size: clamp(24px, 6vw, 32px);
    line-height: 1.3;
  }

  .article-meta {
    gap: 12px;
    font-size: 13px;
  }

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

  .related-section .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .article-actions {
    margin-top: 32px;
    padding-top: 24px;
    flex-direction: column;
    align-items: flex-start;
  }

  .share-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 520px) {
  .header-tools {
    gap: 6px;
  }

  .search-toggle,
  .nav-toggle {
    width: 36px;
    height: 36px;
  }

  .hot-entry {
    display: none;
  }

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

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

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

/* roulang page: category2 */
:root {
  --primary: #0F2B26;
  --primary-light: #18443B;
  --accent: #B8F047;
  --warm: #D9A643;
  --bg: #F4F4EF;
  --dark: #0B1D1A;
  --text: #1A1D1B;
  --text-muted: #5B6660;
  --border: rgba(0,0,0,0.08);
  --border-dark: rgba(255,255,255,0.08);
  --radius: 10px;
  --radius-lg: 14px;
  --shadow: 0 4px 12px rgba(23,40,35,0.06);
  --shadow-lg: 0 8px 24px rgba(23,40,35,0.14);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --container: 1200px;
  --space: clamp(56px, 8vw, 96px);
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Arial Narrow", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: inherit; border: none; outline: none; background: none; }
.container { max-width: var(--container); margin: 0 auto; padding-left: clamp(16px, 4vw, 48px); padding-right: clamp(16px, 4vw, 48px); width: 100%; }

/* ===== Header ===== */
.site-header {
  background: rgba(244, 244, 239, 0.94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: var(--transition);
}
.site-header.is-scrolled {
  box-shadow: 0 4px 16px rgba(23, 40, 35, 0.08);
}
.site-header.is-scrolled .header-inner {
  padding-top: 10px;
  padding-bottom: 10px;
}
.header-inner {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-top: 20px;
  padding-bottom: 14px;
  transition: padding 0.3s ease;
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.logo-text {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--primary);
  line-height: 1.2;
}
.logo-suffix {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-light);
  margin-left: 2px;
  opacity: 0.75;
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 18px;
}
.search-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  cursor: pointer;
  transition: var(--transition);
  background: rgba(15,43,38,0.06);
}
.search-toggle:hover {
  background: var(--primary);
  color: var(--accent);
}
.hot-entry {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(184, 240, 71, 0.25);
  border: 1px solid rgba(184, 240, 71, 0.7);
  border-radius: 999px;
  padding: 5px 16px;
  line-height: 1.4;
  transition: var(--transition);
}
.hot-entry:hover {
  background: var(--accent);
  color: var(--primary);
  transform: translateY(-1px);
}
.nav-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  cursor: pointer;
  background: rgba(15,43,38,0.06);
  font-size: 18px;
  transition: var(--transition);
}
.nav-toggle:hover {
  background: var(--primary);
  color: var(--accent);
}
.header-search {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1);
  display: flex;
  align-items: center;
  background: #fff;
  border-radius: 8px;
  margin-top: 0;
}
.header-search.open {
  max-height: 54px;
  margin-top: 12px;
}
.header-search input {
  flex: 1;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text);
  background: transparent;
  border-bottom: 1px solid rgba(0,0,0,0.12);
}
.header-search input::placeholder { color: #9aa39e; }
.header-search .search-line {
  width: 1px;
  height: 18px;
  background: rgba(0,0,0,0.1);
}
.main-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-top: 12px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  padding: 6px 0;
  transition: var(--transition);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}
.nav-link:hover {
  color: var(--primary);
}
.nav-link:hover::after {
  width: 100%;
}
.nav-link.active {
  color: var(--primary);
  font-weight: 700;
}
.nav-link.active::after {
  width: 100%;
}

/* ===== Category Hero ===== */
.category-hero {
  position: relative;
  background: linear-gradient(135deg, rgba(11,29,26,0.94), rgba(24,68,59,0.82)), url('/assets/images/backpic/back-1.webp') center/cover;
  color: #fff;
  padding: clamp(56px, 8vw, 90px) 0;
  margin-bottom: 0;
}
.category-hero .container {
  max-width: 860px;
  text-align: center;
}
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 6px;
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 18px;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: var(--accent); }
.category-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 14px;
  letter-spacing: 2px;
}
.category-hero .hero-sub {
  font-size: 16px;
  color: rgba(255,255,255,0.82);
  max-width: 620px;
  margin: 0 auto 30px;
  line-height: 1.8;
}
.topic-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 12px;
}
.topic-tags .tag {
  display: inline-block;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 999px;
  transition: var(--transition);
}
.topic-tags .tag:hover {
  background: var(--accent);
  color: var(--primary);
  border-color: var(--accent);
}

/* ===== Stats Band ===== */
.stats-band {
  background: var(--dark);
  padding: clamp(40px, 5vw, 64px) 0;
  border-bottom: 1px solid var(--border-dark);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item .stat-num {
  font-family: var(--font-num);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
  display: block;
}
.stat-item .stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-top: 8px;
  letter-spacing: 1px;
}

/* ===== Project Layout ===== */
.project-section {
  padding: var(--space) 0;
}
.project-main {
  padding-right: 32px;
}
.masonry-grid {
  columns: 2;
  column-gap: 26px;
}
.masonry-card {
  break-inside: avoid;
  margin-bottom: 26px;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.masonry-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.masonry-media {
  overflow: hidden;
  position: relative;
}
.masonry-media img {
  width: 100%;
  transition: transform 0.45s cubic-bezier(0.4,0,0.2,1);
}
.masonry-card:hover .masonry-media img {
  transform: scale(1.03);
}
.masonry-card:nth-child(1) .masonry-media img { aspect-ratio: 16 / 10; object-fit: cover; }
.masonry-card:nth-child(2) .masonry-media img { aspect-ratio: 4 / 5; object-fit: cover; }
.masonry-card:nth-child(3) .masonry-media img { aspect-ratio: 16 / 11; object-fit: cover; }
.masonry-card:nth-child(4) .masonry-media img { aspect-ratio: 3 / 4; object-fit: cover; }
.masonry-card:nth-child(5) .masonry-media img { aspect-ratio: 16 / 9; object-fit: cover; }
.masonry-card:nth-child(6) .masonry-media img { aspect-ratio: 4 / 3; object-fit: cover; }
.masonry-card:nth-child(7) .masonry-media img { aspect-ratio: 16 / 12; object-fit: cover; }
.masonry-card:nth-child(8) .masonry-media img { aspect-ratio: 1 / 1; object-fit: cover; }
.masonry-body {
  padding: 24px;
}
.masonry-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.badge {
  display: inline-block;
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(15,43,38,0.07);
  border-radius: 999px;
  letter-spacing: 0.5px;
}
.date {
  font-size: 13px;
  color: var(--text-muted);
}
.masonry-body h3 {
  font-size: clamp(18px, 1.8vw, 21px);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.masonry-body p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 0;
}
.masonry-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}
.masonry-link i {
  font-size: 13px;
  transition: transform 0.3s ease;
}
.masonry-link:hover {
  color: var(--primary-light);
}
.masonry-link:hover i {
  transform: translateX(4px);
}

/* ===== Sidebar ===== */
.project-side {
  position: relative;
}
.sidebar-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 26px;
  margin-bottom: 24px;
}
.sticky-card {
  position: sticky;
  top: 120px;
}
.sidebar-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  position: relative;
  padding-left: 16px;
}
.sidebar-card h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 4px;
  height: 20px;
  background: var(--accent);
  border-radius: 2px;
}
.sidebar-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}
.sidebar-stats {
  display: flex;
  justify-content: space-between;
  margin: 20px 0;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.sidebar-stats .stat {
  text-align: center;
}
.sidebar-stats .stat b {
  display: block;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
}
.sidebar-stats .stat span {
  font-size: 12px;
  color: var(--text-muted);
}
.btn-block {
  display: block;
  width: 100%;
  text-align: center;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  background: var(--primary);
  color: var(--accent);
  transition: var(--transition);
}
.btn-block:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.sidebar-mini {
  background: var(--dark);
  border-color: var(--dark);
  color: #fff;
}
.sidebar-mini h3 {
  color: #fff;
}
.sidebar-mini h3::before {
  background: var(--accent);
}
.sidebar-mini p {
  color: rgba(255,255,255,0.7);
}
.sidebar-mini .btn-block {
  background: var(--accent);
  color: var(--primary);
  margin-top: 16px;
}
.sidebar-mini .btn-block:hover {
  background: #c8ff5e;
  color: var(--primary);
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(120deg, rgba(15,43,38,0.97), rgba(24,68,59,0.92)), url('/assets/images/backpic/back-2.webp') center/cover;
  color: #fff;
  padding: var(--space);
  text-align: center;
}
.cta-inner {
  max-width: 800px;
  margin: 0 auto;
}
.cta-section h2 {
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
}
.cta-section .cta-desc {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 30px;
  line-height: 1.7;
}
.cta-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 34px;
  background: var(--accent);
  color: var(--primary);
  font-size: 16px;
  font-weight: 700;
  border-radius: 10px;
  transition: var(--transition);
  border: 1.5px solid transparent;
}
.btn-primary:hover {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  background: transparent;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 10px;
  border: 1.5px solid rgba(255,255,255,0.6);
  transition: var(--transition);
}
.btn-outline:hover {
  background: rgba(184,240,71,0.12);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn-outline i {
  transition: transform 0.3s ease;
}
.btn-outline:hover i {
  transform: translateX(4px);
}
.cta-perks {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  margin-top: 26px;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}
.cta-perks .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

/* ===== FAQ ===== */
.faq-section {
  padding: var(--space) 0;
  background: var(--bg);
}
.faq-layout {
  display: grid;
  grid-template-columns: 30% 70%;
  gap: 48px;
  align-items: start;
}
.faq-heading h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--text);
  position: relative;
  padding-left: 18px;
  line-height: 1.3;
  margin-bottom: 16px;
}
.faq-heading h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 4px;
  height: 24px;
  background: var(--accent);
  border-radius: 2px;
}
.faq-heading p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}
.faq-list {
  border-top: 1px solid var(--border);
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 22px 8px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question .faq-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.15);
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(135deg);
  background: var(--primary);
  color: var(--accent);
  border-color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1);
}
.faq-answer-inner {
  padding: 0 8px 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 600px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-logo {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.footer-logo span {
  color: var(--accent);
  font-size: 15px;
  font-weight: 600;
  margin-left: 4px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.55);
  max-width: 280px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-left: 12px;
}
.footer-col h4::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 3px;
  height: 16px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-col ul li:last-child { margin-bottom: 0; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-dark);
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .project-main {
    padding-right: 20px;
  }
  .masonry-grid {
    columns: 2;
    column-gap: 20px;
  }
  .masonry-card {
    margin-bottom: 20px;
  }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .faq-heading p {
    max-width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .nav-list {
    gap: 24px;
  }
}
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s cubic-bezier(0.4,0,0.2,1);
  }
  .main-nav.open {
    max-height: 300px;
  }
  .main-nav .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-top: 16px;
    padding: 16px 0;
    border-top: 1px solid var(--border);
  }
  .nav-link {
    font-size: 16px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .project-section .grid-x .project-main,
  .project-section .grid-x .project-side {
    padding: 0;
  }
  .project-main {
    padding-right: 0;
  }
  .project-side {
    margin-top: 36px;
  }
  .sticky-card {
    position: static;
  }
  .cta-btns {
    flex-direction: column;
    align-items: stretch;
  }
  .btn-primary, .btn-outline {
    width: 100%;
  }
  .cta-perks {
    flex-wrap: wrap;
    gap: 10px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}
@media (max-width: 640px) {
  .masonry-grid {
    columns: 1;
  }
  .masonry-card {
    margin-bottom: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .category-hero {
    padding: 48px 0;
  }
  .hero-sub {
    font-size: 14px;
  }
  .topic-tags .tag {
    font-size: 12px;
    padding: 5px 12px;
  }
  .faq-question {
    font-size: 15px;
    padding: 18px 4px;
  }
  .faq-answer-inner {
    padding: 0 4px 18px;
  }
  .header-top {
    flex-wrap: wrap;
    gap: 8px;
  }
  .hot-entry {
    display: none;
  }
  .logo-text {
    font-size: 22px;
  }
  .sidebar-card {
    padding: 22px;
  }
}