/* roulang page: index */
:root{
  --brand:#0FA37F;
  --brand-dark:#0A7A5E;
  --brand-mist:#E4F4EF;
  --accent:#FF6B2C;
  --accent-dark:#E2541A;
  --accent-mist:#FFF0E8;
  --ink:#101C18;
  --text:#2A3632;
  --muted:#6B7A75;
  --line:#E1E8E4;
  --bg:#F4F7F5;
  --white:#FFFFFF;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,28,24,.04),0 8px 24px rgba(16,28,24,.06);
  --shadow-hover:0 2px 4px rgba(16,28,24,.06),0 14px 34px rgba(16,28,24,.10);
  --container:1280px;
  --font:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,button,select,textarea{font-family:inherit;font-size:inherit}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-mist);color:var(--brand-dark)}

.container,.grid-container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
.grid-container{padding-left:24px;padding-right:24px}

/* 公告条 */
.announce{background:var(--ink);color:#C9D6D1;font-size:14px}
.announce-inner{display:flex;align-items:center;gap:12px;min-height:36px;padding-top:6px;padding-bottom:6px}
.announce-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);flex:0 0 auto;box-shadow:0 0 0 3px rgba(15,163,127,.22)}
.announce-inner p{flex:1;line-height:1.6;font-size:13.5px}
.announce-close{background:none;border:0;color:#8FA29C;font-size:20px;line-height:1;padding:4px 6px;border-radius:6px}
.announce-close:hover{color:#fff;background:rgba(255,255,255,.08)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,28,24,.09)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px;max-width:var(--container);margin:0 auto;padding:0 24px}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px;flex:1 1 0;min-width:0}
.nav-right{justify-content:flex-end}
.nav-link{position:relative;font-size:15.5px;font-weight:500;color:var(--text);padding:6px 2px;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;border-radius:2px;background:var(--brand);transition:width .25s ease}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{width:100%}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand-mark{position:relative;width:32px;height:32px;border-radius:9px;background:var(--brand);overflow:hidden;flex:0 0 auto}
.brand-mark::before{content:"";position:absolute;left:-5px;top:15px;width:30px;height:2px;background:rgba(255,255,255,.9);transform:rotate(-28deg)}
.brand-mark::after{content:"";position:absolute;right:5px;bottom:5px;width:7px;height:7px;border-radius:2px;background:var(--accent)}
.brand-text{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:.01em}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 11px}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px}
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--line)}
.mobile-panel.is-open{display:block}
.mobile-panel a{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 24px;border-bottom:1px solid var(--line);color:var(--text);font-size:16px}
.mobile-panel a:hover{background:var(--bg);color:var(--brand)}
.mobile-panel a i{color:var(--muted);font-size:13px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:600;font-size:16px;line-height:1;padding:14px 30px;min-height:48px;border:1.5px solid transparent;transition:all .22s ease;text-align:center}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(226,84,26,.26)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand-mist);color:var(--brand-dark)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:15px;min-height:42px}

/* 徽章 / 标签 */
.badge,.tag{display:inline-flex;align-items:center;gap:6px;border-radius:6px;font-size:13px;font-weight:600;padding:5px 12px;line-height:1.5;white-space:nowrap}
.badge-brand,.tag-brand{background:var(--brand-mist);color:var(--brand-dark)}
.badge-accent{background:var(--accent-mist);color:var(--accent-dark)}
.tag-neutral{background:#EEF2F0;color:var(--muted)}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--ink);display:flex;align-items:center;min-height:660px}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.62}
.hero-shade{position:absolute;inset:0;background:linear-gradient(100deg,rgba(16,28,24,.95) 0%,rgba(16,28,24,.80) 44%,rgba(16,28,24,.34) 100%)}
.hero-inner{position:relative;z-index:2;padding-top:92px;padding-bottom:92px;align-items:center}
.hero-copy h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;color:#fff;margin:20px 0 18px;max-width:660px}
.hero-sub{font-size:17px;line-height:1.9;color:#C9D6D1;max-width:580px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:36px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14)}
.hero-points li{position:relative;padding-left:20px;font-size:14px;color:#A9BAB4}
.hero-points li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:9px;height:2px;border-radius:2px;background:var(--brand)}
.hero-visual{margin-top:26px}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);border:1px solid rgba(255,255,255,.14);box-shadow:0 26px 60px rgba(0,0,0,.36)}

/* 板块 */
.section{padding:104px 0}
.section-tight{padding:76px 0}
.section-alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:46px}
.section-title{position:relative;padding-left:16px;font-size:clamp(22px,2.6vw,30px);line-height:1.35}
.section-title::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;background:var(--brand)}
.section-desc{margin-top:12px;font-size:15.5px;color:var(--muted);max-width:720px;line-height:1.85}
.link-more{font-size:15px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-more:hover{gap:10px;color:var(--brand-dark)}

/* Bento 主张区 */
.bento-main{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:38px 36px;box-shadow:var(--shadow);height:100%}
.bento-main h3{font-size:22px;line-height:1.5;margin-bottom:16px}
.bento-main p{font-size:15.5px;line-height:1.9;color:var(--muted)}
.bento-mini{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px 18px;box-shadow:var(--shadow);height:100%;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.bento-mini:hover{transform:translateY(-3px);border-color:rgba(15,163,127,.32);box-shadow:var(--shadow-hover)}
.bento-mini .ico{width:34px;height:34px;border-radius:9px;background:var(--brand-mist);color:var(--brand-dark);display:flex;align-items:center;justify-content:center;font-size:15px;margin-bottom:14px}
.bento-mini h4{font-size:16px;line-height:1.45;margin-bottom:8px}
.bento-mini p{font-size:13.5px;line-height:1.75;color:var(--muted)}

/* 故事区 */
.story-text h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:20px;position:relative;padding-left:16px}
.story-text h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;background:var(--brand)}
.story-text p{font-size:16.5px;line-height:1.9;color:var(--text);margin-bottom:18px}
.story-text p.muted{color:var(--muted);font-size:15.5px}
.story-link{display:inline-flex;align-items:center;gap:8px;margin-top:8px;font-weight:600;color:var(--brand);border-bottom:1px solid rgba(15,163,127,.35);padding-bottom:3px}
.story-link:hover{color:var(--brand-dark);gap:12px}
.story-media{position:relative;z-index:1;padding:0 0 18px 18px}
.story-media::after{content:"";position:absolute;left:0;bottom:0;width:64px;height:64px;border-radius:12px;background:var(--brand);opacity:.9;z-index:-1}
.story-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}

/* 精选卡片 */
.pick-card{display:flex;flex-direction:column;height:100%;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.pick-card:hover{transform:translateY(-3px);border-color:rgba(15,163,127,.32);box-shadow:var(--shadow-hover)}
.pick-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-mist)}
.pick-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.pick-card:hover .pick-thumb img{transform:scale(1.04)}
.pick-body{padding:20px 18px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.pick-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink)}
.pick-card:hover .pick-title{color:var(--brand-dark)}
.pick-desc{font-size:14px;line-height:1.8;color:var(--muted)}
.pick-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--muted)}
.pick-card.is-lead .pick-thumb{aspect-ratio:16/10}
@media screen and (min-width:1024px){
  .pick-card.is-lead{flex-direction:row}
  .pick-card.is-lead .pick-thumb{width:50%;aspect-ratio:auto;min-height:280px}
  .pick-card.is-lead .pick-body{width:50%;padding:34px 30px;justify-content:center;gap:14px}
  .pick-card.is-lead .pick-title{font-size:22px;line-height:1.45}
  .pick-card.is-lead .pick-desc{font-size:15px}
}

/* 最新信息列表 */
.news-head{margin-bottom:14px}
.news-note{font-size:14.5px;color:var(--muted);margin-bottom:22px}
.news-list{border-top:1px solid var(--line)}
.news-item{position:relative;display:grid;grid-template-columns:132px minmax(0,1fr) 176px;gap:24px;align-items:center;padding:22px 12px;border-bottom:1px solid var(--line);transition:background .2s ease}
.news-item:hover{background:#FAFCFB}
.news-thumb{display:block;width:132px;aspect-ratio:3/2;border-radius:var(--radius-sm);overflow:hidden;background:var(--brand-mist)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-title{font-size:17.5px;font-weight:600;line-height:1.55}
.news-title a{color:var(--ink)}
.news-title a::after{content:"";position:absolute;inset:0;z-index:1}
.news-item:hover .news-title a{color:var(--brand)}
.news-summary{margin-top:8px;font-size:14.5px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;flex-direction:column;align-items:flex-end;gap:10px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-empty{display:flex;flex-direction:column;align-items:center;gap:14px;padding:56px 20px;border:1px dashed var(--line);border-radius:var(--radius);background:var(--white);text-align:center}
.news-empty .ico{width:48px;height:48px;border-radius:50%;background:var(--brand-mist);color:var(--brand-dark);display:flex;align-items:center;justify-content:center;font-size:18px}
.news-empty p{font-size:15px;color:var(--muted)}

/* 数据带 */
.stats-band{background:var(--ink);color:#C9D6D1;padding:92px 0}
.stats-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35;position:relative;padding-left:16px;margin-bottom:14px}
.stats-band h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;background:var(--brand)}
.stats-band .section-desc{color:#93A6A0}
.stats-grid{margin-top:46px}
.stat-card{padding:26px 22px;border-radius:var(--radius);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);height:100%}
.stat-num{font-size:clamp(28px,3.4vw,38px);font-weight:700;line-height:1.1;color:var(--brand);font-variant-numeric:tabular-nums}
.stat-num span{font-size:16px;margin-left:4px;color:#C9D6D1;font-weight:600}
.stat-label{margin-top:12px;font-size:14px;line-height:1.75;color:#9FB2AC}
.badges-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:48px;padding-top:32px;border-top:1px solid rgba(255,255,255,.12)}
.badge-gray{border-radius:6px;padding:9px 15px;font-size:13px;font-weight:600;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);color:#C9D6D1}

/* FAQ */
.faq{max-width:880px;margin:0 auto}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item.is-open{border-color:rgba(15,163,127,.4);box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:64px;padding:18px 22px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);line-height:1.5}
.faq-item.is-open .faq-q{color:var(--brand-dark);border-left:2px solid var(--brand)}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--muted);border-radius:2px;transition:all .3s ease}
.faq-icon::before{left:0;right:0;top:9px;height:2px}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px}
.faq-item.is-open .faq-icon::before{background:var(--brand)}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a-inner{padding:0 24px 22px 24px;font-size:15px;line-height:1.85;color:var(--muted)}

/* CTA */
.cta-band{background:var(--brand-mist);padding:76px 0}
.cta-card{background:var(--white);border:1px solid rgba(15,163,127,.2);border-radius:18px;box-shadow:var(--shadow);padding:44px 40px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,430px);gap:38px;align-items:center}
.cta-card h2{font-size:clamp(21px,2.4vw,27px);line-height:1.4;margin-bottom:12px}
.cta-card p{font-size:15.5px;line-height:1.85;color:var(--muted)}
.sub-form{display:flex;gap:12px}
.sub-input{flex:1;height:48px;border-radius:var(--radius-sm);border:1px solid #D9E3DF;background:#fff;padding:0 16px;font-size:15px;color:var(--text);transition:border-color .2s ease,box-shadow .2s ease}
.sub-input::placeholder{color:#9BAAA5}
.sub-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,163,127,.16)}
.sub-msg{margin-top:12px;font-size:13.5px;color:var(--brand-dark);min-height:20px}

/* 页脚 */
.site-footer{background:var(--ink);color:#C9D6D1;padding:76px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{width:30px;height:30px}
.footer-brand span{font-size:16px;font-weight:700;color:#fff}
.footer-about{font-size:14.5px;line-height:1.85;color:#9FB2AC;max-width:340px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14.5px;color:#C9D6D1}
.footer-links a:hover{color:var(--brand)}
.footer-cta{font-size:14.5px;line-height:1.85;color:#9FB2AC;margin-bottom:18px}
.footer-bottom{margin-top:58px;border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:#8FA29C}
.footer-bottom a{color:#8FA29C}
.footer-bottom a:hover{color:var(--brand)}
.to-top{display:inline-flex;align-items:center;gap:8px;color:#C9D6D1;border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:8px 16px;font-size:13.5px;background:none}
.to-top:hover{background:rgba(255,255,255,.08);color:#fff}

/* 响应式 */
@media screen and (max-width:1199px){
  .brand-text{font-size:15px}
  .nav-left,.nav-right{gap:20px}
  .nav-link{font-size:15px}
}
@media screen and (max-width:1023px){
  .nav-left{display:none}
  .nav-right .nav-link{display:none}
  .nav-toggle{display:inline-flex}
  .nav-inner{height:60px;padding:0 16px;gap:12px}
  .brand{flex:1 1 auto;justify-content:center;min-width:0}
  .brand-text{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:46vw}
  .nav-right{flex:0 0 auto}
  .hero{min-height:auto}
  .hero-inner{padding-top:64px;padding-bottom:64px}
  .hero-copy h1{max-width:none}
  .hero-visual{margin-top:34px}
  .section{padding:76px 0}
  .section-tight{padding:60px 0}
  .story-media{padding:0 0 16px 16px;margin-top:32px}
  .cta-card{grid-template-columns:1fr;padding:32px 26px;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .stats-band{padding:70px 0}
}
@media screen and (max-width:639px){
  body{font-size:16px}
  .container,.grid-container{padding-left:18px;padding-right:18px}
  .announce-inner p{font-size:13px}
  .section{padding:58px 0}
  .section-head{margin-bottom:30px}
  .btn{padding:13px 24px;font-size:15px;width:100%}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .hero-points{gap:10px 20px}
  .bento-main{padding:26px 22px}
  .news-item{grid-template-columns:1fr;gap:14px;padding:20px 4px}
  .news-thumb{width:100%;aspect-ratio:16/10}
  .news-meta{flex-direction:row;align-items:center;justify-content:flex-start;gap:12px}
  .stats-grid{gap:14px}
  .sub-form{flex-direction:column}
  .sub-input{height:48px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .faq-q{font-size:16px;padding:16px 16px}
  .faq-a-inner{padding:0 18px 20px}
}

/* roulang page: category1 */
:root{
  --brand:#0FA37F;
  --brand-dark:#0A7A5E;
  --brand-soft:#E4F4EF;
  --accent:#FF6B2C;
  --accent-dark:#E2541A;
  --accent-soft:#FFF0E8;
  --ink:#101C18;
  --text:#2A3632;
  --muted:#6B7A75;
  --line:#E1E8E4;
  --bg:#F4F7F5;
  --white:#FFFFFF;
  --radius-sm:10px;
  --radius:14px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(16,28,24,.04), 0 8px 24px rgba(16,28,24,.06);
  --shadow-md:0 2px 4px rgba(16,28,24,.06), 0 16px 36px rgba(16,28,24,.10);
  --font:-apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container:1280px;
  --space-section:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius);object-fit:cover;}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease, border-color .2s ease, background-color .2s ease, transform .2s ease;}
a:hover{color:var(--accent-dark);}
a:focus-visible,button:focus-visible,input:focus-visible,.faq-q:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:0;}
h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}
.num{font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,28,24,.08);}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  min-height:72px;
  gap:20px;
}
.nav-left,.nav-right{
  display:flex;
  align-items:center;
  gap:26px;
}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;gap:22px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  padding:0 2px;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:2px;right:2px;bottom:8px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-dark);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-dark);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand:hover{color:var(--brand-dark);}
.brand-mark{
  width:22px;height:22px;
  border-radius:6px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  position:relative;
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  right:4px;bottom:4px;
  width:6px;height:6px;
  background:var(--accent);
  border-radius:2px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:12px 28px;
  border-radius:var(--radius-pill);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:transform .2s ease, background-color .2s ease, color .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 8px 20px rgba(255,107,44,.24);
}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(226,84,26,.28);}
.btn-primary:active{transform:translateY(0);background:var(--accent-dark);color:#fff;}
.btn-outline{
  background:transparent;
  border-color:var(--brand);
  color:var(--brand-dark);
}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-outline-light{
  background:transparent;
  border:1.5px solid rgba(201,214,209,.5);
  color:#C9D6D1;
  border-radius:var(--radius-pill);
}
.btn-outline-light:hover{background:rgba(15,163,127,.18);border-color:var(--brand);color:#fff;transform:translateY(-2px);}
.btn-sm{min-height:42px;padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn-nav{min-height:42px;padding:10px 22px;font-size:14px;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  padding:0;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:11px;right:11px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .25s ease, opacity .25s ease;
}
.nav-toggle span:nth-child(1){top:14px;}
.nav-toggle span:nth-child(2){top:21px;}
.nav-toggle span:nth-child(3){top:28px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 28px;
  font-size:15px;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.is-active{color:var(--brand-dark);font-weight:600;box-shadow:inset 3px 0 0 var(--brand);}

/* ============ 面包屑 ============ */
.crumb-bar{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  padding:16px 0;
  font-size:13.5px;
  color:var(--muted);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-dark);}
.crumb i{font-size:10px;color:var(--line);}

/* ============ Hero ============ */
.hero{
  background:linear-gradient(180deg,#FFFFFF 0%, var(--bg) 100%);
  padding:72px 0 88px;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:6px;
  font-size:13px;
  font-weight:600;
  background:var(--brand-soft);
  color:var(--brand-dark);
}
.badge-neutral{background:#EFF3F1;color:var(--muted);}
.hero h1{margin:18px 0 16px;}
.hero-lead{
  font-size:17px;
  color:var(--text);
  max-width:560px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;
  aspect-ratio:16/10;
  box-shadow:var(--shadow-md);
}
.hero-figure .corner{
  position:absolute;
  left:0;bottom:0;
  width:22px;height:22px;
  border-left:3px solid var(--accent);
  border-bottom:3px solid var(--accent);
  border-radius:0 0 0 4px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:26px;
  margin-top:30px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-meta div{font-size:13.5px;color:var(--muted);}
.hero-meta strong{
  display:block;
  font-size:22px;
  font-weight:700;
  color:var(--brand-dark);
  font-variant-numeric:tabular-nums;
}

/* ============ 通用板块 ============ */
.section{padding:var(--space-section) 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--brand-dark);
  letter-spacing:.02em;
  padding-left:12px;
  position:relative;
  margin-bottom:12px;
}
.section-head .eyebrow::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:2px;height:14px;
  background:var(--brand);
  transform:translateY(-50%);
}
.section-head p{color:var(--muted);font-size:15.5px;margin-top:12px;}

/* ============ 步骤条 ============ */
.steps-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  padding:16px 40px 8px;
}
.step{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:24px;
  padding:28px 0;
  position:relative;
}
.step + .step{border-top:1px dashed transparent;}
.step::after{
  content:"";
  position:absolute;
  left:47px;
  top:88px;
  bottom:-14px;
  border-left:1px dashed #C9D6D1;
}
.step:last-child::after{display:none;}
.step-num{
  text-align:center;
  font-size:32px;
  font-weight:700;
  line-height:1.2;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.step-body h3{margin-bottom:8px;}
.step-body p{color:var(--muted);font-size:15.5px;margin:0;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border-radius:6px;
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:600;
}
.tag-time{background:#EFF3F1;color:var(--muted);}

/* ============ 两栏图文 ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:44px 0;
}
.split + .split{border-top:1px solid var(--line);}
.split.reverse .split-media{order:2;}
.split-media img{width:100%;aspect-ratio:16/10;box-shadow:var(--shadow-sm);}
.check-list{margin-top:18px;}
.check-list li{
  position:relative;
  padding-left:30px;
  margin-bottom:14px;
  font-size:15.5px;
  color:var(--text);
}
.check-list li:last-child{margin-bottom:0;}
.check-list li i{
  position:absolute;
  left:0;top:6px;
  color:var(--brand);
  font-size:15px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:22px;
  font-weight:600;
  color:var(--brand-dark);
  border-bottom:1.5px solid rgba(15,163,127,.35);
  padding-bottom:2px;
  min-height:44px;
}
.text-link:hover{border-color:var(--accent);}

/* ============ 提示条 ============ */
.notice{
  display:flex;
  gap:16px;
  align-items:flex-start;
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--brand);
  border-radius:var(--radius-sm);
  padding:20px 24px;
  box-shadow:var(--shadow-sm);
  margin:28px 0;
}
.notice i{color:var(--brand);font-size:18px;margin-top:5px;}
.notice p{font-size:15px;color:var(--text);margin:0;}
.notice strong{color:var(--ink);}

/* ============ FAQ ============ */
.faq-block{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  min-height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:14px 26px;
  background:#fff;
  border:0;
  border-left:2px solid transparent;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:background-color .2s ease, border-color .2s ease, color .2s ease;
}
.faq-q:hover{background:#FAFCFB;color:var(--brand-dark);}
.faq-item.is-open .faq-q{border-left-color:var(--brand);color:var(--brand-dark);}
.faq-q i{font-size:14px;color:var(--muted);transition:transform .25s ease;flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--brand);}
.faq-a{
  display:none;
  padding:0 26px 22px 28px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}
.faq-item.is-open .faq-a{display:block;}

/* ============ CTA ============ */
.cta{
  background:var(--brand-soft);
  border-radius:var(--radius);
  padding:52px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
}
.cta h2{margin-bottom:12px;}
.cta p{color:var(--text);font-size:15.5px;margin:0;}
.cta-form{display:flex;gap:12px;}
.cta-form input{
  flex:1;
  height:48px;
  padding:0 18px;
  border:1px solid #D9E3DF;
  border-radius:var(--radius-sm);
  background:#fff;
  font-size:15px;
  color:var(--text);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.cta-form input::placeholder{color:#9AA8A3;}
.cta-form input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(15,163,127,.16);
}
.cta-note{font-size:13.5px;color:var(--muted);margin-top:14px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#C9D6D1;margin-top:var(--space-section);}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:44px;
  padding:72px 0 48px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-weight:700;
  font-size:15px;
  margin-bottom:16px;
}
.footer-about{font-size:14px;color:#9FB0AA;line-height:1.85;margin:0;}
.footer-title{font-size:15px;color:#fff;font-weight:600;margin-bottom:18px;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:14px;color:#C9D6D1;}
.footer-links a:hover{color:var(--brand);}
.footer-cta{font-size:14px;color:#9FB0AA;margin:0 0 18px;line-height:1.85;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:22px 0 30px;
  border-top:1px solid rgba(201,214,209,.16);
  font-size:13px;
  color:#8FA09A;
}
.footer-bottom a{color:#8FA09A;}
.footer-bottom a:hover{color:var(--brand);}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 16px;
  border:1px solid rgba(201,214,209,.24);
  border-radius:var(--radius-pill);
  transition:border-color .2s ease, color .2s ease, background-color .2s ease;
}
.to-top:hover{border-color:var(--brand);background:rgba(15,163,127,.14);color:#fff;}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  :root{--space-section:80px;}
  .header-inner{grid-template-columns:auto 1fr auto;min-height:60px;}
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:block;}
  .brand{justify-self:center;font-size:14px;}
  .hero{padding:52px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{order:-1;}
  .split{grid-template-columns:1fr;gap:32px;padding:36px 0;}
  .split.reverse .split-media{order:0;}
  .cta{grid-template-columns:1fr;padding:40px 32px;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;padding:56px 0 36px;}
}
@media screen and (max-width:639px){
  :root{--space-section:64px;}
  .container{padding:0 18px;}
  body{font-size:16px;}
  .hero-lead{font-size:16px;}
  .hero-meta{gap:18px;}
  .hero-meta div{flex:1 1 40%;}
  .steps-wrap{padding:8px 20px 4px;}
  .step{grid-template-columns:52px 1fr;gap:14px;padding:22px 0;}
  .step-num{font-size:24px;}
  .step::after{left:25px;top:70px;}
  .faq-q{font-size:16px;padding:14px 18px;}
  .faq-a{padding:0 18px 20px 20px;}
  .cta{padding:32px 22px;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:48px 0 28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .notice{padding:18px;}
}

/* roulang page: article */
:root{
  --brand:#0FA37F;
  --brand-deep:#0A7A5E;
  --brand-mist:#E4F4EF;
  --accent:#FF6B2C;
  --accent-deep:#E2541A;
  --accent-mist:#FFF0E8;
  --ink:#101C18;
  --text:#2A3632;
  --muted:#6B7A75;
  --line:#E1E8E4;
  --bg:#F4F7F5;
  --card:#FFFFFF;
  --zebra:#FAFCFB;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(16,28,24,.04),0 8px 24px rgba(16,28,24,.06);
  --shadow-md:0 2px 4px rgba(16,28,24,.06),0 14px 34px rgba(16,28,24,.10);
  --maxw:1280px;
  --font:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:var(--radius);object-fit:cover;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease;}
a:hover,a:focus{color:var(--accent-deep);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input{font-family:inherit;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.grid-container.article-layout{max-width:var(--maxw);padding:0 24px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:999px;font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
  min-height:44px;text-align:center;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,107,44,.28);}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,107,44,.32);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand-deep);}
.btn-outline:hover,.btn-outline:focus{background:var(--brand-mist);color:var(--brand-deep);transform:translateY(-2px);}
.btn-outline-light{background:transparent;border-color:rgba(201,214,209,.55);color:#C9D6D1;}
.btn-outline-light:hover,.btn-outline-light:focus{background:rgba(15,163,127,.16);border-color:var(--brand);color:#fff;}
.btn-sm{padding:10px 20px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--brand-deep);font-size:15px;min-height:44px;}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i,.link-arrow:focus i{transform:translateX(4px);}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;font-size:13px;font-weight:600;line-height:1.5;}
.badge-brand{background:var(--brand-mist);color:var(--brand-deep);}
.badge-muted{background:#EEF2F0;color:var(--muted);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,28,24,.08);}
.nav-wrap{
  position:relative;display:flex;align-items:center;height:72px;gap:12px;
  max-width:var(--maxw);margin:0 auto;padding:0 24px;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:4px;flex:1 1 0;min-width:0;}
.nav-right{justify-content:flex-end;gap:10px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--text);transition:background-color .2s ease,color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-link:hover,.nav-link:focus{background:var(--brand-mist);color:var(--brand-deep);}
.nav-link:hover::after,.nav-link:focus::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-deep);font-weight:600;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 8px;}
.brand-mark{position:relative;width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-deep));flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;right:-3px;bottom:-3px;width:10px;height:10px;border-radius:3px;background:var(--accent);}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:0 auto;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-cta{display:none;}
.mobile-panel{
  display:none;border-top:1px solid var(--line);background:#fff;
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.mobile-panel.is-open{max-height:420px;}
.mobile-link{
  display:flex;align-items:center;height:52px;padding:0 24px;font-size:16px;color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-link:hover,.mobile-link:focus{background:var(--brand-mist);color:var(--brand-deep);}

/* 面包屑与文章头 */
.article-head{padding:34px 0 30px;border-bottom:1px solid var(--line);background:var(--card);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;line-height:1.7;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover,.breadcrumb a:focus{color:var(--brand-deep);}
.breadcrumb .sep{color:#C3CFC9;}
.article-title{
  font-size:clamp(26px,3.6vw,42px);
  line-height:1.28;
  margin:14px 0 18px;
  max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);}
.article-meta .divider{width:1px;height:12px;background:var(--line);display:inline-block;}

/* 正文布局 */
.article-layout{padding-top:48px;padding-bottom:64px;}
.article-main{min-width:0;}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--text);}
.article-body > * + *{margin-top:20px;}
.article-body p{margin:0;}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.3vw,26px);
  line-height:1.45;
  margin:44px 0 12px;
  padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;line-height:1.5;margin:32px 0 10px;}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:8px 0;line-height:1.85;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--brand-mist);border-left:4px solid var(--brand);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--brand-deep);
}
.article-body blockquote p{margin:0;}
.article-body img{margin:26px 0;border-radius:var(--radius);width:100%;height:auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;}
.article-body thead th{background:var(--brand-mist);color:var(--brand-deep);font-weight:600;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body tbody tr:nth-child(even){background:var(--zebra);}
.article-body a{color:var(--brand-deep);border-bottom:1px solid rgba(15,163,127,.35);}
.article-body a:hover,.article-body a:focus{border-bottom-width:2px;color:var(--accent-deep);}
.article-body code{background:var(--brand-mist);color:var(--brand-deep);padding:2px 6px;border-radius:6px;font-size:14px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* 空态 */
.empty-state{
  max-width:760px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:48px 32px;text-align:center;
}
.empty-icon{width:56px;height:56px;border-radius:16px;background:var(--brand-mist);color:var(--brand-deep);display:flex;align-items:center;justify-content:center;font-size:22px;margin:0 auto 18px;}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px;}
.placeholder-lines{max-width:760px;margin-top:28px;display:grid;gap:12px;}
.placeholder-lines span{display:block;height:14px;border-radius:7px;background:#E8EEEB;}
.placeholder-lines span:nth-child(2){width:92%;}
.placeholder-lines span:nth-child(4){width:76%;}

/* 侧栏 */
.article-side{align-self:flex-start;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:20px;position:sticky;top:96px;
}
.side-title{font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em;margin-bottom:12px;}
.toc-list{display:grid;gap:4px;}
.toc-list a{display:block;font-size:14px;line-height:1.7;color:var(--muted);padding:6px 8px;border-radius:8px;border-left:2px solid transparent;}
.toc-list a:hover,.toc-list a:focus{background:var(--brand-mist);color:var(--brand-deep);border-left-color:var(--brand);}
.toc-empty{font-size:13px;color:var(--muted);line-height:1.8;}
.side-card-back{margin-top:16px;position:static;padding:16px 20px;}
.side-back{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-deep);min-height:44px;}

/* 板块通用 */
.section{padding:72px 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px;}
.section-title{font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
.section-desc{font-size:14px;color:var(--muted);margin-top:8px;}

/* 相关推荐 */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.rec-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.rec-card:hover,.rec-card:focus-within{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(15,163,127,.3);}
.rec-media{position:relative;aspect-ratio:16/10;overflow:hidden;border-radius:0;}
.rec-media img{width:100%;height:100%;border-radius:0;transition:transform .4s ease;}
.rec-card:hover .rec-media img{transform:scale(1.04);}
.rec-media::after{content:"";position:absolute;inset:auto 0 0 0;height:45%;background:linear-gradient(to top,rgba(16,28,24,.32),transparent);}
.rec-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;}
.rec-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);}
.rec-title a{color:inherit;}
.rec-title a:hover,.rec-title a:focus{color:var(--brand-deep);}
.rec-sum{font-size:14px;line-height:1.8;color:var(--muted);}
.rec-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:13px;color:var(--muted);}

/* 上下篇 */
.post-nav{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:52px;}
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;min-height:44px;
}
.post-nav-item:hover,.post-nav-item:focus{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(15,163,127,.3);}
.post-nav-next{text-align:right;align-items:flex-end;}
.post-nav-label{font-size:12px;color:var(--muted);letter-spacing:.04em;}
.post-nav-title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;}
.back-row{margin-top:28px;display:flex;justify-content:center;}

/* CTA */
.cta-band{background:var(--accent-mist);border-top:1px solid rgba(255,107,44,.16);border-bottom:1px solid rgba(255,107,44,.16);padding:64px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-text{max-width:520px;}
.cta-text h2{font-size:clamp(22px,2.4vw,28px);line-height:1.4;margin-bottom:10px;}
.cta-text p{font-size:15px;color:var(--text);}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;flex:1 1 380px;justify-content:flex-end;}
.cta-form input{
  flex:1 1 240px;min-width:200px;height:48px;border-radius:var(--radius-sm);
  border:1px solid #D9E3DF;background:#fff;padding:0 16px;font-size:15px;color:var(--text);
}
.cta-form input::placeholder{color:#9AA8A3;}
.cta-form input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,163,127,.16);outline:none;}

/* 页脚 */
.site-footer{background:var(--ink);color:#C9D6D1;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-about{font-size:14px;line-height:1.9;color:#9FB0AA;max-width:340px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em;margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:#C9D6D1;display:inline-flex;align-items:center;min-height:32px;}
.footer-links a:hover,.footer-links a:focus{color:var(--brand);}
.footer-cta{font-size:14px;color:#9FB0AA;line-height:1.9;margin-bottom:16px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(201,214,209,.18);padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#8D9E98;
}
.footer-bottom a{color:#C9D6D1;font-size:13px;}
.footer-bottom a:hover,.footer-bottom a:focus{color:var(--brand);}
.to-top{display:inline-flex;align-items:center;gap:8px;min-height:44px;}

/* 响应式 */
@media (max-width:1023px){
  .nav-toggle{display:flex;}
  .nav-left,.nav-right{display:none;}
  .mobile-cta{display:inline-flex;}
  .nav-wrap{height:60px;justify-content:space-between;}
  .brand-text{font-size:15px;}
  .mobile-panel{display:block;}
  .section{padding:56px 0;}
  .article-layout{padding-top:36px;}
  .article-side{order:-1;margin-bottom:24px;}
  .side-card{position:static;padding:14px 16px;}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;}
  .toc-list a{white-space:nowrap;border-left:0;border-bottom:2px solid transparent;padding:8px 12px;background:#F2F6F4;}
  .toc-list a:hover,.toc-list a:focus{border-bottom-color:var(--brand);}
  .side-card-back{margin-top:12px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .rec-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container,.grid-container.article-layout{padding:0 18px;}
  .article-head{padding:24px 0 22px;}
  .article-body{font-size:16px;}
  .rec-grid{grid-template-columns:1fr;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-next{text-align:left;align-items:flex-start;}
  .cta-form{justify-content:stretch;}
  .cta-form .btn{width:100%;}
  .cta-band{padding:48px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-about{max-width:none;}
}
@media (max-width:520px){
  .brand-text{font-size:13px;}
  .article-title{font-size:24px;}
  .section-desc{font-size:13px;}
}

/* roulang page: category2 */
:root{
  --brand:#0FA37F;
  --brand-deep:#0A7A5E;
  --brand-soft:#E4F4EF;
  --accent:#FF6B2C;
  --accent-deep:#E2541A;
  --accent-soft:#FFF0E8;
  --ink:#101C18;
  --text:#2A3632;
  --muted:#6B7A75;
  --line:#E1E8E4;
  --page:#F4F7F5;
  --card:#FFFFFF;
  --line-soft:#D9E3DF;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(16,28,24,.04), 0 8px 24px rgba(16,28,24,.06);
  --shadow-md:0 2px 6px rgba(16,28,24,.07), 0 16px 38px rgba(16,28,24,.10);
  --gap-section:104px;
  --font:-apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;
  font-family:var(--font);
  font-size:17px;line-height:1.9;color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease,background-color .2s ease}
a:hover{color:var(--accent-deep)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:0}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.grid-container{
  width:100%;max-width:1280px;margin-left:auto;margin-right:auto;
  padding-left:20px;padding-right:20px;
}
@media print, screen and (min-width:40em){
  .grid-container{padding-left:20px;padding-right:20px}
}

/* ================= 头部导航 ================= */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px rgba(16,28,24,.09)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;
  align-items:center;gap:16px;min-height:72px;
}
.nav-left{display:flex;align-items:center;gap:4px;justify-content:flex-start}
.nav-right{display:flex;align-items:center;gap:4px;justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:600;color:var(--text);letter-spacing:0;
}
.nav-link:hover{color:var(--brand-deep);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand-deep)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;
  height:2px;border-radius:2px;background:var(--brand);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  justify-self:center;font-size:17px;font-weight:700;color:var(--ink);
  letter-spacing:.01em;white-space:nowrap;
}
.brand:hover{color:var(--brand-deep)}
.brand-mark{
  position:relative;width:24px;height:24px;flex:0 0 24px;border-radius:7px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
}
.brand-mark::before{
  content:"";position:absolute;left:6px;right:6px;top:7px;height:2px;border-radius:2px;background:#fff;
}
.brand-mark::after{
  content:"";position:absolute;left:6px;right:10px;top:13px;height:2px;border-radius:2px;background:rgba(255,255,255,.75);
}
.nav-cta{padding:10px 20px;font-size:14px;min-height:44px}
.header-cta{display:none}
.menu-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:17px;cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease;
}
.menu-toggle:hover{background:var(--brand-soft);border-color:rgba(15,163,127,.4)}
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--line)}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 20px;border-bottom:1px solid var(--line);
  font-size:16px;font-weight:600;color:var(--text);
}
.mobile-panel a.is-active{color:var(--brand-deep);background:var(--brand-soft)}
.mobile-panel a.mobile-cta{color:var(--accent-deep);background:var(--accent-soft);border-bottom:0}
.mobile-panel a .fa-chevron-right{font-size:13px;color:var(--muted)}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;border-radius:999px;padding:14px 30px;min-height:48px;
  font-size:16px;font-weight:600;line-height:1;background:var(--accent);color:#fff;
  cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(226,84,26,.26)}
.btn:active{transform:translateY(0);box-shadow:none}
.btn-secondary{
  background:transparent;color:var(--brand-deep);
  border:1.5px solid var(--brand);box-shadow:none;
}
.btn-secondary:hover{background:var(--brand-soft);color:var(--brand-deep);box-shadow:none}
.btn-light{background:#fff;color:var(--brand-deep)}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-outline-light{background:transparent;border:1.5px solid rgba(201,214,209,.55);color:#E6EFEB}
.btn-outline-light:hover{background:rgba(15,163,127,.18);border-color:var(--brand);color:#fff;box-shadow:none}
.btn-sm{padding:10px 20px;font-size:14px;min-height:44px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--brand-deep);
  border-bottom:1.5px solid rgba(15,163,127,.35);padding-bottom:2px;
}
.text-link:hover{color:var(--accent-deep);border-color:rgba(226,84,26,.45)}

/* ================= 徽章 / 标签 ================= */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:6px;
  font-size:13px;font-weight:600;line-height:1.6;
  background:var(--brand-soft);color:var(--brand-deep);
}
.badge-time{background:#EFF3F1;color:var(--muted)}
.badge-accent{background:var(--accent-soft);color:var(--accent-deep)}
.hero-badge{background:rgba(15,163,127,.22);color:#8FE8CE}

/* ================= 首屏 ================= */
.cat-hero{position:relative;overflow:hidden;background:var(--ink)}
.cat-hero .hero-media{position:absolute;inset:0;z-index:0}
.cat-hero .hero-media img{width:100%;height:100%;object-fit:cover;opacity:.9}
.cat-hero .hero-veil{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,rgba(16,28,24,.95) 0%,rgba(16,28,24,.80) 46%,rgba(16,28,24,.42) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:820px;padding:72px 0 84px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9FB2AB;margin-bottom:20px}
.crumb a{color:#C9D6D1}
.crumb a:hover{color:var(--brand)}
.crumb .sep{opacity:.5}
.cat-hero h1{
  margin:18px 0 20px;color:#fff;
  font-size:clamp(28px,4.4vw,42px);line-height:1.28;font-weight:700;letter-spacing:.01em;
}
.hero-lead{font-size:17px;line-height:1.9;color:#C9D6D1;max-width:660px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ================= 通用板块 ================= */
.section{padding:var(--gap-section) 0}
.section-tight{padding:72px 0}
.section-alt{background:#fff}
.section-head{max-width:760px;margin-bottom:48px}
.kicker{
  display:inline-block;font-size:13px;font-weight:700;color:var(--brand);
  letter-spacing:.02em;margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;color:var(--ink);
  position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;background:var(--brand);
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.9}
.head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:44px}

/* ================= 功能卡 ================= */
.feature-card{
  height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.feature-card:hover{transform:translateY(-3px);border-color:rgba(15,163,127,.32);box-shadow:var(--shadow-md)}
.feature-icon{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);font-size:19px;margin-bottom:18px;
}
.feature-card h3{font-size:19px;font-weight:600;color:var(--ink);line-height:1.45;margin-bottom:10px}
.feature-card p{font-size:15px;line-height:1.85;color:var(--muted)}

/* ================= 交替图文 ================= */
.alt-row + .alt-row{margin-top:84px}
.alt-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
}
.alt-media{position:relative}
.alt-media::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:34%;
  border-radius:0 0 var(--radius) var(--radius);
  background:linear-gradient(180deg,rgba(15,163,127,0) 0%,rgba(10,122,94,.28) 100%);
  pointer-events:none;
}
.alt-text h3{font-size:clamp(20px,2.2vw,24px);font-weight:700;color:var(--ink);line-height:1.45;margin-bottom:14px}
.alt-text p{font-size:16px;line-height:1.9;color:var(--text);margin-bottom:16px}
.alt-list{list-style:none;margin:18px 0 0}
.alt-list li{position:relative;padding-left:22px;font-size:15px;line-height:1.85;color:var(--muted);margin-bottom:10px}
.alt-list li:last-child{margin-bottom:0}
.alt-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--brand);
}
.alt-text .text-link{margin-top:20px}

/* ================= 时间轴 ================= */
.timeline-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:56px}
.timeline::before{
  content:"";position:absolute;top:17px;left:8%;right:8%;height:2px;background:var(--line);
}
.tl-item{position:relative;padding-top:56px}
.tl-item::before{
  content:"";position:absolute;top:10px;left:50%;transform:translateX(-50%);
  width:16px;height:16px;border-radius:50%;background:var(--brand);
  border:3px solid #fff;box-shadow:0 0 0 1px rgba(15,163,127,.45);
}
.tl-num{
  display:block;text-align:center;font-size:13px;font-weight:700;color:var(--brand);
  letter-spacing:.08em;font-variant-numeric:tabular-nums;margin-bottom:6px;
}
.tl-item h3{font-size:17px;font-weight:600;color:var(--ink);text-align:center;margin-bottom:8px}
.tl-item p{font-size:14px;line-height:1.8;color:var(--muted);text-align:center}

/* ================= 不等高信息卡 ================= */
.cards-row{align-items:flex-start}
.tier-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tier-card:hover{transform:translateY(-3px);border-color:rgba(15,163,127,.32);box-shadow:var(--shadow-md)}
.tier-card--tall{padding:34px 28px 42px}
.tier-card--short{padding:22px 22px}
.tier-card h3{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:10px;line-height:1.5}
.tier-card p{font-size:15px;line-height:1.85;color:var(--muted)}
.tier-list{list-style:none;margin:16px 0 0;padding-top:16px;border-top:1px dashed var(--line)}
.tier-list li{
  position:relative;padding-left:20px;font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:8px;
}
.tier-list li:last-child{margin-bottom:0}
.tier-list li::before{
  content:"";position:absolute;left:0;top:.7em;width:7px;height:7px;border-radius:2px;background:var(--brand);
}

/* ================= FAQ ================= */
.faq-list{max-width:880px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-left:2px solid var(--line);
  border-radius:var(--radius);margin-bottom:14px;overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{box-shadow:var(--shadow-sm)}
.faq-item[open]{border-left-color:var(--brand);box-shadow:var(--shadow-sm)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:18px 24px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::marker{content:""}
.faq-arrow{flex:0 0 auto;color:var(--brand);font-size:14px;transition:transform .25s ease}
.faq-item[open] .faq-arrow{transform:rotate(180deg)}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ================= CTA ================= */
.cta-band{
  background:linear-gradient(120deg,var(--brand-soft) 0%,#F2FBF8 62%,var(--accent-soft) 100%);
  border-radius:20px;padding:56px 48px;
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;color:var(--ink);line-height:1.4;margin-bottom:12px}
.cta-band p{font-size:16px;line-height:1.9;color:var(--text);max-width:560px}
.subscribe-form{margin-top:6px}
.form-row{display:flex;gap:12px;align-items:stretch}
.form-row input[type="email"]{
  flex:1 1 auto;min-width:0;height:48px;border-radius:var(--radius-sm);
  border:1px solid var(--line-soft);background:#fff;padding:0 16px;
  font-size:15px;color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row input[type="email"]::placeholder{color:#9AA9A4}
.form-row input[type="email"]:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,163,127,.18);
}
.form-note{margin-top:12px;font-size:13px;color:var(--muted);min-height:20px}
.form-note.is-ok{color:var(--brand-deep);font-weight:600}

/* ================= 页脚 ================= */
.site-footer{background:var(--ink);color:#C9D6D1;padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px}
.footer-brand .brand-mark{width:22px;height:22px;flex:0 0 22px}
.footer-about{font-size:15px;line-height:1.9;color:#9FB2AB;max-width:360px}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;line-height:1.5}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:15px;color:#C9D6D1}
.footer-links a:hover{color:var(--brand)}
.footer-cta{font-size:15px;line-height:1.85;color:#9FB2AB;margin-bottom:16px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid rgba(255,255,255,.1);margin-top:56px;padding:22px 0;
  font-size:14px;color:#8FA39C;
}
.footer-bottom a{color:#8FA39C}
.footer-bottom a:hover{color:var(--brand)}
.to-top{display:inline-flex;align-items:center;gap:8px;min-height:44px}

/* ================= 响应式 ================= */
@media screen and (max-width:1023px){
  .header-inner{grid-template-columns:44px 1fr auto;min-height:60px;gap:10px}
  .nav-left,.nav-right{display:none}
  .menu-toggle{display:inline-flex;grid-column:1;grid-row:1;justify-self:start}
  .brand{grid-column:2;grid-row:1;justify-self:center;font-size:16px}
  .header-cta{display:inline-flex;grid-column:3;grid-row:1;justify-self:end;padding:10px 16px;font-size:13px;min-height:44px}
  :root{--gap-section:72px}
  .hero-inner{padding:56px 0 64px}
  .alt-row + .alt-row{margin-top:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:44px 32px}
}

@media screen and (max-width:767px){
  body{font-size:16px}
  .brand{font-size:15px}
  .timeline{grid-template-columns:1fr;gap:0;margin-top:36px}
  .timeline::before{left:19px;right:auto;top:12px;bottom:12px;width:2px;height:auto}
  .tl-item{padding:0 0 28px 52px;text-align:left}
  .tl-item::before{left:12px;top:6px;transform:none}
  .tl-num,.tl-item h3,.tl-item p{text-align:left}
  .alt-media img{aspect-ratio:4/3}
  .section{padding:64px 0}
  .cta-band{padding:36px 22px;border-radius:16px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
}

@media screen and (max-width:520px){
  .brand{font-size:13.5px;gap:8px}
  .brand-mark{width:20px;height:20px;flex:0 0 20px}
  .header-cta{padding:9px 12px;font-size:12px}
  .hero-inner{padding:44px 0 52px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
  .faq-item summary{padding:16px 18px;font-size:16px}
  .faq-answer{padding:0 18px 18px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category3 */
:root{
  --brand:#0FA37F;
  --brand-dark:#0A7A5E;
  --brand-mist:#E4F4EF;
  --accent:#FF6B2C;
  --accent-dark:#E2541A;
  --accent-mist:#FFF0E8;
  --ink:#101C18;
  --text:#2A3632;
  --muted:#6B7A75;
  --line:#E1E8E4;
  --bg:#F4F7F5;
  --card:#FFFFFF;
  --radius-sm:10px;
  --radius:14px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(16,28,24,.04),0 8px 24px rgba(16,28,24,.06);
  --shadow-2:0 2px 6px rgba(16,28,24,.06),0 16px 36px rgba(16,28,24,.10);
  --container:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0}
h1{font-size:clamp(26px,4.2vw,42px);line-height:1.28}
h2{font-size:clamp(21px,2.6vw,30px);line-height:1.38}
h3{font-size:19px;line-height:1.5;font-weight:600}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 18px;padding-left:1.3em}
li{margin-bottom:8px}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.grid-container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
.num{font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(16,28,24,.08)}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:72px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 2px;font-size:15px;font-weight:500;color:var(--text);
  border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease;
}
.nav-link:hover{color:var(--brand-dark)}
.nav-link.is-active{color:var(--brand-dark);border-bottom-color:var(--brand);font-weight:600}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;position:relative;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
}
.brand-mark::after{
  content:"";position:absolute;right:6px;bottom:5px;width:7px;height:7px;border-radius:2px;background:var(--accent);
}
.brand-text{font-size:17px;font-weight:700;line-height:1.2;white-space:nowrap}
.menu-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--ink);font-size:17px;cursor:pointer;transition:background .2s ease,border-color .2s ease;
}
.menu-toggle:hover{background:var(--brand-mist);border-color:var(--brand)}
.mobile-panel{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:8px 0 18px;
}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;align-items:center;min-height:52px;padding:0 24px;
  font-size:16px;color:var(--text);border-bottom:1px solid var(--line);
}
.mobile-panel a:last-of-type{border-bottom:0}
.mobile-panel a.is-active{color:var(--brand-dark);font-weight:600}
.mobile-panel .mobile-cta{margin:14px 24px 0}
.mobile-panel .mobile-cta .btn{width:100%}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:13px 30px;border-radius:var(--pill);
  font-size:16px;font-weight:600;line-height:1.2;letter-spacing:0;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,44,.26)}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,107,44,.32)}
.btn-primary:active{transform:translateY(0);background:var(--accent-dark)}
.btn-outline{background:#fff;color:var(--brand-dark);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-mist);color:var(--brand-dark);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-sm{min-height:42px;padding:10px 22px;font-size:14.5px}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:6px;font-size:13px;font-weight:600;line-height:1.7;
}
.badge-brand{background:var(--brand-mist);color:var(--brand-dark)}
.badge-accent{background:var(--accent-mist);color:var(--accent-dark)}
.badge-gray{background:#EDF1EF;color:var(--muted)}

/* ============ Hero（纯色浅雾 + 居中） ============ */
.hero-help{
  background:var(--brand-mist);
  background-image:linear-gradient(180deg,rgba(228,244,239,.9),rgba(244,247,245,.98));
  padding:52px 0 62px;position:relative;
}
.hero-help::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line);
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--muted);margin-bottom:22px;
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand-dark)}
.crumb-sep{color:#B6C4BE}
.hero-inner{max-width:820px;margin:0 auto;text-align:center}
.hero-help h1{margin:14px 0 18px}
.hero-sub{font-size:17px;line-height:1.9;color:#3B4A45;max-width:720px;margin:0 auto 28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ============ 板块通用 ============ */
.section{padding:76px 0}
.section-alt{background:#fff}
.section-head{max-width:760px;margin-bottom:30px}
.kicker{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-mist);padding:4px 12px;border-radius:6px;margin-bottom:14px;
}
.section-head h2{margin-bottom:12px;padding-left:14px;border-left:3px solid var(--brand)}
.section-desc{font-size:15.5px;color:var(--muted);margin:0;max-width:720px}

/* ============ 提示块 ============ */
.tip{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border-left:4px solid var(--brand);border-radius:var(--radius-sm);
  padding:18px 22px;box-shadow:var(--shadow-1);margin-bottom:26px;
}
.tip i{color:var(--brand);font-size:18px;line-height:1.7;flex:0 0 auto;margin-top:2px}
.tip p{margin:0;font-size:15px;line-height:1.85;color:#3B4A45}
.tip-warn{border-left-color:var(--accent)}
.tip-warn i{color:var(--accent)}

/* ============ 手风琴 ============ */
.acc{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.acc-item + .acc-item{border-top:1px solid var(--line)}
.acc-item{transition:box-shadow .25s ease}
.acc-item.is-open{box-shadow:inset 3px 0 0 var(--brand)}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 22px;background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;cursor:pointer;
  transition:background-color .2s ease,color .2s ease;
}
.acc-head:hover{background:#FAFCFB;color:var(--brand-dark)}
.acc-item.is-open .acc-head{color:var(--brand-dark)}
.acc-icon{
  flex:0 0 auto;font-size:14px;color:var(--muted);
  transition:transform .3s ease,color .3s ease;
}
.acc-item.is-open .acc-icon{transform:rotate(180deg);color:var(--brand)}
.acc-body{max-height:0;overflow:hidden;transition:max-height .33s ease}
.acc-inner{padding:0 22px 22px;font-size:15px;line-height:1.85;color:#3B4A45}
.acc-inner p{margin:0}

/* ============ 窄幅图 ============ */
.strip-figure{margin:0 0 34px;border-radius:var(--radius);overflow:hidden;position:relative;box-shadow:var(--shadow-1)}
.strip-figure img{width:100%;height:280px;object-fit:cover;border-radius:var(--radius)}
.strip-figure figcaption{
  font-size:13px;color:var(--muted);text-align:center;padding:10px 0 0;
}

/* ============ 对照表 ============ */
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow-1)}
.cmp-table{
  width:100%;min-width:560px;border-collapse:collapse;background:#fff;
  font-size:15px;margin:0;
}
.cmp-table th{
  background:var(--brand-mist);color:var(--brand-dark);text-align:left;
  padding:15px 20px;font-weight:600;font-size:15px;border-bottom:1px solid var(--line);
}
.cmp-table td{
  padding:15px 20px;border-bottom:1px solid var(--line);color:var(--text);vertical-align:top;line-height:1.8;
}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:nth-child(even){background:#FAFCFB}
.cmp-table td:first-child{color:var(--ink);font-weight:600;width:34%}

/* ============ 快速答案卡 ============ */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quick-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(15,163,127,.3)}
.quick-card h3{margin-bottom:10px;font-size:17px}
.quick-card p{font-size:14.5px;line-height:1.85;color:var(--muted);margin:0}
.quick-card .q-index{
  display:inline-block;font-size:13px;font-weight:700;color:var(--accent-dark);
  background:var(--accent-mist);padding:3px 10px;border-radius:6px;margin-bottom:12px;
}

/* ============ 返回首页 ============ */
.back-home{
  text-align:center;margin-top:36px;font-size:15px;
}
.back-home a{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand-dark);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.back-home a:hover{border-bottom-color:var(--brand-dark)}

/* ============ CTA 色块 ============ */
.cta-block{background:var(--accent-mist);padding:56px 0}
.cta-inner{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:38px 40px;box-shadow:var(--shadow-1);
}
.cta-text h2{margin-bottom:10px;font-size:clamp(20px,2.3vw,26px)}
.cta-text p{margin:0;font-size:15px;color:var(--muted);line-height:1.85}
.cta-form{display:flex;gap:12px;align-items:center}
.cta-form input[type="email"]{
  flex:1 1 auto;min-width:0;height:48px;padding:0 16px;
  border:1px solid #D9E3DF;border-radius:var(--radius-sm);
  font-size:15px;color:var(--text);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input[type="email"]::placeholder{color:#9BAAA4}
.cta-form input[type="email"]:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-mist);
}
.cta-form .btn{flex:0 0 auto;min-height:48px;padding:13px 26px;font-size:15px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#C9D6D1;padding:64px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-about{font-size:14.5px;line-height:1.85;color:#9FB0AA;margin:0;max-width:340px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-links li{margin:0}
.footer-links a{color:#C9D6D1;font-size:14.5px}
.footer-links a:hover{color:var(--brand)}
.footer-cta{font-size:14.5px;color:#9FB0AA;margin:0 0 16px;line-height:1.85}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13.5px;color:#8FA39C;
}
.footer-bottom a{color:#8FA39C}
.footer-bottom a:hover{color:var(--brand)}
.to-top{display:inline-flex;align-items:center;gap:6px}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
  .footer-grid > div:last-child{grid-column:1 / -1}
  .quick-grid{grid-template-columns:repeat(3,1fr);gap:16px}
}
@media screen and (max-width:1023px){
  .nav-left,.nav-right{display:none}
  .header-inner{grid-template-columns:auto 1fr auto;height:64px;gap:12px}
  .brand{justify-self:center}
  .menu-toggle{display:inline-flex;justify-self:start}
  .header-cta{justify-self:end}
  .header-cta .btn{min-height:42px;padding:10px 18px;font-size:14px}
  .cta-inner{grid-template-columns:1fr;padding:32px 28px;gap:24px}
  .quick-grid{grid-template-columns:1fr;gap:16px}
  .section{padding:64px 0}
}
@media screen and (max-width:767px){
  body{font-size:16px}
  .grid-container{padding-left:18px;padding-right:18px}
  .header-inner{padding:0 18px}
  .brand-text{font-size:15px}
  .header-cta .btn{display:none}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:34px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media screen and (max-width:520px){
  .hero-help{padding:34px 0 44px}
  .hero-sub{font-size:15.5px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .section{padding:52px 0}
  .acc-head{font-size:15.5px;padding:14px 16px;min-height:58px}
  .acc-inner{padding:0 16px 18px}
  .tip{padding:16px 16px}
  .strip-figure img{height:170px}
  .cta-block{padding:40px 0}
  .cta-inner{padding:26px 20px}
  .cta-form{flex-direction:column;align-items:stretch}
  .cta-form .btn{width:100%}
  .cmp-table th,.cmp-table td{padding:12px 14px}
}