/* roulang page: index */
:root{
  --brand-900:#0A4A3F;
  --brand-700:#0E7C66;
  --brand-500:#17A67A;
  --brand-100:#DFF3EA;
  --accent-500:#FF6B35;
  --accent-600:#F4551F;
  --mint-300:#8FE3C8;
  --bg-000:#FFFFFF;
  --bg-050:#F6FAF8;
  --bg-100:#EEF5F1;
  --ink-900:#0C1F1A;
  --ink-600:#4A5D57;
  --ink-400:#8A9A94;
  --line:#E2EDE8;
  --shadow-s:0 2px 10px rgba(12,31,26,.06);
  --shadow-m:0 10px 24px rgba(12,31,26,.10);
  --shadow-l:0 18px 44px rgba(12,31,26,.14);
  --radius-card:16px;
  --radius-img:14px;
}
*{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","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink-900);background:var(--bg-050);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font-family:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.2em;}
.num{font-variant-numeric:tabular-nums;font-weight:700;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px;}}
@media(min-width:1280px){.container{padding-left:32px;padding-right:32px;}}
.section{padding-top:48px;padding-bottom:48px;}
@media(min-width:768px){.section{padding-top:64px;padding-bottom:64px;}}
@media(min-width:1024px){.section{padding-top:88px;padding-bottom:88px;}}
.section-alt{background:var(--bg-100);}
.sec-head{margin-bottom:26px;}
.sec-title{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.sec-desc{margin-top:10px;color:var(--ink-600);font-size:15px;max-width:660px;}
.sec-line{width:52px;height:4px;border-radius:4px;background:var(--brand-700);margin-bottom:14px;}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-s);}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
@media(min-width:768px){.header-inner{height:72px;gap:28px;}}
.logo{display:flex;align-items:center;gap:9px;flex-shrink:0;}
.logo svg{width:26px;height:26px;flex-shrink:0;}
.logo-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap;}
@media(min-width:1024px){.logo-text{font-size:18px;}}
.main-nav{display:none;align-items:center;gap:26px;flex:1;}
@media(min-width:1024px){.main-nav{display:flex;}}
.nav-link{position:relative;padding:6px 2px;font-size:15px;font-weight:500;color:var(--ink-600);transition:color .18s ease-out;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--brand-700);transform:scaleX(0);transform-origin:center;transition:transform .18s ease-out;}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--ink-900);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.header-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{position:relative;display:none;align-items:center;height:40px;width:220px;background:var(--bg-050);border:1px solid var(--line);border-radius:999px;padding:0 14px 0 38px;transition:border-color .18s,box-shadow .18s,background .18s;}
@media(min-width:1180px){.search-box{display:flex;width:250px;}}
.search-box:focus-within{border-color:var(--brand-700);background:#fff;box-shadow:0 0 0 3px rgba(23,166,122,.18);}
.search-box input{width:100%;border:0;background:transparent;font-size:14px;color:var(--ink-900);outline:none;}
.search-box input::placeholder{color:var(--ink-400);}
.search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--ink-400);}
.menu-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);color:var(--ink-900);}
.menu-toggle:hover{background:var(--bg-100);}
@media(min-width:1024px){.menu-toggle{display:none;}}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;transition:background-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,color .18s;white-space:nowrap;}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(255,107,53,.28);}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,107,53,.34);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(255,107,53,.24);}
.btn-outline{background:#fff;color:var(--brand-700);border:1.5px solid var(--brand-700);}
.btn-outline:hover{background:var(--brand-100);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}
.btn-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6);}
.btn-light:hover{background:rgba(255,255,255,.14);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.link-more{color:var(--brand-700);font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:3px;}
.link-more:hover{color:var(--brand-900);}

/* 倒计时条 */
.countdown-bar{background:var(--brand-900);color:#fff;}
.countdown-inner{display:flex;align-items:center;flex-wrap:wrap;gap:12px 18px;padding-top:8px;padding-bottom:8px;min-height:46px;}
.countdown-label{font-size:14px;color:rgba(255,255,255,.82);}
.countdown-clock{display:flex;align-items:center;gap:8px;margin-left:auto;}
.cd-block{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;min-width:52px;padding:3px 8px;background:rgba(255,255,255,.13);border-radius:8px;line-height:1.15;}
.cd-block b{font-size:19px;font-weight:700;font-variant-numeric:tabular-nums;}
.cd-block span{font-size:11px;color:rgba(255,255,255,.7);}
.cd-btn{display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;border:1.5px solid rgba(255,255,255,.55);font-size:13px;font-weight:600;color:#fff;transition:background-color .18s;}
.cd-btn:hover{background:rgba(255,255,255,.16);}
@media(max-width:520px){.countdown-label{font-size:12px;}.cd-block{min-width:44px;}}

/* Hero */
.hero{position:relative;background:var(--bg-000);overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(14,124,102,.06) 0 1px,transparent 1px 12px);pointer-events:none;}
.hero-inner{position:relative;display:grid;gap:36px;padding-top:44px;padding-bottom:52px;}
@media(min-width:1024px){.hero-inner{grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding-top:68px;padding-bottom:80px;}}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:6px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.04em;}
.hero h1{margin-top:18px;font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:700;letter-spacing:-.01em;}
.hero-sub{margin-top:16px;font-size:17px;color:var(--ink-600);max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line);}
.hero-stat b{display:block;font-size:24px;color:var(--brand-700);font-variant-numeric:tabular-nums;}
.hero-stat span{font-size:13px;color:var(--ink-400);}
.hero-media{position:relative;}
.hero-media img.main{width:100%;height:300px;object-fit:cover;border-radius:var(--radius-card);border:1px solid var(--line);box-shadow:var(--shadow-m);}
@media(min-width:768px){.hero-media img.main{height:400px;}}
.hero-media img.tag{position:absolute;right:-6px;bottom:-22px;width:44%;max-width:230px;height:120px;object-fit:cover;border-radius:var(--radius-img);border:4px solid #fff;box-shadow:var(--shadow-l);}
@media(min-width:768px){.hero-media img.tag{height:150px;right:-16px;}}

/* 错位卖点 */
.feature-grid{display:grid;gap:20px;}
@media(min-width:1024px){.feature-grid{grid-template-columns:repeat(12,1fr);}}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-s);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s;}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:var(--brand-100);}
.feature-card.anchor{background:var(--brand-100);border-color:var(--brand-500);}
.feature-card.wide-lg{grid-column:span 7;}
.feature-card.narrow-lg{grid-column:span 5;}
@media(max-width:1023px){.feature-card.wide-lg,.feature-card.narrow-lg{grid-column:span 1;}}
.feature-icon{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:12px;background:#fff;border:1px solid var(--line);color:var(--brand-700);}
.feature-card h3{margin-top:16px;font-size:18px;font-weight:600;line-height:1.4;}
.feature-card p{margin-top:8px;font-size:15px;color:var(--ink-600);}

/* 图墙 */
.wall{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;grid-auto-rows:150px;}
@media(min-width:768px){.wall{grid-template-columns:repeat(3,1fr);}}
@media(min-width:1024px){.wall{grid-template-columns:repeat(4,1fr);grid-auto-rows:168px;gap:18px;}}
.wall-item{position:relative;overflow:hidden;border-radius:var(--radius-img);border:1px solid var(--line);background:var(--bg-100);}
.wall-item img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out;}
.wall-item:hover img{transform:scale(1.03);}
.wall-item .bar{position:absolute;left:0;right:0;bottom:0;padding:10px 12px;background:linear-gradient(to top,rgba(10,74,63,.86),rgba(10,74,63,0));color:#fff;transition:transform .18s ease-out;}
.wall-item:hover .bar{transform:translateY(-4px);}
.wall-item .bar em{display:block;font-style:normal;font-size:11px;letter-spacing:.04em;color:var(--mint-300);font-weight:600;}
.wall-item .bar strong{display:block;font-size:14px;font-weight:600;line-height:1.35;}
@media(min-width:1024px){
  .wall-item.tall{grid-row:span 2;}
  .wall-item.wide{grid-column:span 2;}
}

/* 报名 CTA */
.signup{background:linear-gradient(160deg,#0E7C66 0%,#0A4A3F 100%);border-radius:24px;padding:32px;}
@media(min-width:1024px){.signup{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;padding:48px;}}
.signup h2{color:#fff;font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;}
.signup p{margin-top:14px;color:rgba(255,255,255,.82);font-size:15px;}
.benefit-list{margin:22px 0 0;padding:0;list-style:none;display:grid;gap:10px;}
.benefit-list li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.92);font-size:15px;}
.benefit-list svg{width:18px;height:18px;flex-shrink:0;margin-top:4px;color:var(--mint-300);}
.form-card{margin-top:28px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:18px;padding:22px;}
@media(min-width:1024px){.form-card{margin-top:0;}}
.form-card h3{color:#fff;font-size:16px;font-weight:600;}
.form-field{margin-top:14px;}
.form-field label{display:block;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:6px;}
.form-field input,.form-field textarea{width:100%;border:0;border-radius:999px;background:#fff;color:var(--ink-900);font-size:14px;padding:12px 18px;outline:none;transition:box-shadow .18s;}
.form-field textarea{border-radius:16px;resize:vertical;min-height:76px;}
.form-field input:focus,.form-field textarea:focus{box-shadow:0 0 0 3px rgba(143,227,200,.55);}
.form-card .btn{width:100%;margin-top:18px;}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .18s,background-color .18s;}
.faq-item[open]{background:var(--bg-050);border-left:3px solid var(--brand-700);}
.faq-item summary{display:flex;align-items:center;gap:12px;height:56px;padding:0 18px;cursor:pointer;list-style:none;font-size:16px;font-weight:600;color:var(--ink-900);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .idx{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;flex-shrink:0;border-radius:6px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:700;}
.faq-item summary .mark{margin-left:auto;color:var(--brand-700);font-size:18px;line-height:1;transition:transform .18s;}
.faq-item[open] summary .mark{transform:rotate(45deg);}
.faq-item .ans{padding:0 18px 18px 54px;font-size:15px;color:var(--ink-600);}

/* 资讯卡片 */
.news-grid{display:grid;gap:20px;}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-s);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s;}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:var(--brand-100);}
.news-card:hover h3{color:var(--brand-700);}
@media(min-width:1024px){.news-card.lead{grid-column:span 2;}}
.news-card.lead .news-cover{height:230px;}
.news-cover{height:170px;background:var(--bg-100);overflow:hidden;}
.news-cover img{width:100%;height:100%;object-fit:cover;}
.news-body{padding:18px;display:flex;flex-direction:column;flex:1;}
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:6px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.04em;}
.news-card h3{margin-top:12px;font-size:18px;font-weight:600;line-height:1.4;color:var(--ink-900);transition:color .18s;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card .sum{margin-top:10px;font-size:14px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;}
.news-foot .arrow{margin-left:auto;color:var(--brand-700);transition:transform .18s;}
.news-card:hover .arrow{transform:translateX(3px);}
.empty-state{display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;background:var(--brand-100);border-radius:var(--radius-card);padding:48px 24px;}
.empty-state svg{width:38px;height:38px;color:var(--brand-700);}
.empty-state p{color:var(--brand-900);font-size:15px;}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);margin-top:0;}
.footer-grid{display:grid;gap:32px;padding:48px 0 32px;}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px;}}
.footer-logo{display:flex;align-items:center;gap:9px;}
.footer-logo svg{width:24px;height:24px;}
.footer-logo span{color:#fff;font-size:17px;font-weight:700;}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px;}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.footer-list{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s;}
.footer-list a:hover{color:var(--mint-300);}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.72);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 28px;display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;font-size:13px;color:rgba(255,255,255,.58);}

/* 移动抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:80;background:#fff;transform:translateY(-100%);transition:transform .25s ease-out;overflow-y:auto;display:flex;flex-direction:column;}
.mobile-drawer.open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 16px;border-bottom:1px solid var(--line);}
.drawer-body{padding:8px 16px 120px;}
.drawer-link{display:flex;align-items:center;height:48px;font-size:16px;color:var(--ink-600);border-bottom:1px solid var(--line);}
.drawer-link.active{color:var(--brand-700);font-weight:700;}
.drawer-foot{position:fixed;left:0;right:0;bottom:0;padding:12px 16px;background:#fff;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}

@media(min-width:1024px){[data-desktop-cta]{display:inline-flex !important;}}

/* roulang page: article */
:root{
  --brand-900:#0A4A3F;
  --brand-700:#0E7C66;
  --brand-500:#17A67A;
  --brand-100:#DFF3EA;
  --accent-500:#FF6B35;
  --accent-600:#F4551F;
  --mint-300:#8FE3C8;
  --bg-000:#FFFFFF;
  --bg-050:#F6FAF8;
  --bg-100:#EEF5F1;
  --ink-900:#0C1F1A;
  --ink-600:#4A5D57;
  --ink-400:#8A9A94;
  --line:#E2EDE8;
  --shadow-s:0 2px 10px rgba(12,31,26,.06);
  --shadow-m:0 10px 24px rgba(12,31,26,.10);
  --shadow-l:0 18px 44px rgba(12,31,26,.14);
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:12px;
  --radius-pill:999px;
}
*,*::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","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-900);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;}
a:hover{color:var(--brand-500);}
button,input{font:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;width:100%;}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1280px){.container{padding-left:32px;padding-right:32px;}}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg-000);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-s);
}
.header-inner{display:flex;align-items:center;gap:16px;height:64px;}
@media (min-width:768px){.header-inner{height:72px;gap:24px;}}
.logo{display:flex;align-items:center;gap:9px;flex:0 0 auto;}
.logo svg{width:26px;height:26px;flex:0 0 auto;}
.logo-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap;}
@media (min-width:1024px){.logo-text{font-size:19px;}}
.main-nav{display:none;align-items:center;gap:4px;margin-left:8px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;height:40px;
  padding:0 12px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--ink-600);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:transparent;transition:background-color .18s ease-out;
}
.nav-link:hover{color:var(--brand-700);background:var(--bg-050);}
.nav-link:hover::after{background:var(--brand-100);}
.nav-link.active{color:var(--brand-700);font-weight:700;}
.nav-link.active::after{background:var(--brand-500);}
.header-right{display:flex;align-items:center;gap:10px;margin-left:auto;}
.search-box{
  display:none;align-items:center;gap:8px;
  height:40px;width:220px;padding:0 14px;
  background:var(--bg-050);border:1px solid var(--line);border-radius:var(--radius-pill);
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out;
}
@media (min-width:1024px){.search-box{display:flex;width:240px;}}
.search-box:focus-within{border-color:var(--brand-500);background:var(--bg-000);box-shadow:0 0 0 4px rgba(23,166,122,.12);}
.search-icon{width:17px;height:17px;color:var(--ink-400);flex:0 0 auto;}
.search-box input{border:0;outline:none;background:transparent;width:100%;font-size:14px;color:var(--ink-900);}
.search-box input::placeholder{color:var(--ink-400);}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:var(--bg-050);border:1px solid var(--line);color:var(--brand-700);
  transition:background-color .18s ease-out,border-color .18s ease-out;
}
.menu-toggle:hover{background:var(--brand-100);border-color:var(--brand-100);}
@media (min-width:1024px){.menu-toggle{display:none;}}
.mobile-drawer{
  display:none;position:fixed;inset:64px 0 0 0;z-index:55;background:var(--bg-000);
  padding:16px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a.mobile-link{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:12px;
  color:var(--ink-900);font-size:16px;font-weight:500;border-bottom:1px solid var(--line);
}
.mobile-drawer a.mobile-link:hover{background:var(--bg-050);color:var(--brand-700);}
.mobile-drawer .mobile-cta{margin-top:20px;}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;
  padding:0 22px;height:46px;
  transition:background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 5px 16px rgba(255,107,53,.28);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 9px 22px rgba(255,107,53,.32);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 3px 10px rgba(255,107,53,.24);}
.btn-ghost{background:var(--bg-000);color:var(--brand-700);border-color:var(--brand-500);border-radius:var(--radius-btn);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}

/* article */
.breadcrumb{padding:18px 0 0;font-size:13px;color:var(--ink-400);display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.breadcrumb a{color:var(--ink-600);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:var(--ink-400);}
.article-hero{padding:22px 0 0;}
.article-head{max-width:860px;margin:0 auto;}
.article-title{
  margin:0 0 16px;
  font-size:clamp(28px,4.2vw,46px);line-height:1.24;font-weight:700;letter-spacing:-.01em;color:var(--ink-900);
  overflow-wrap:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:14px;color:var(--ink-400);}
.article-meta .num{font-variant-numeric:tabular-nums;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge-mint{background:rgba(143,227,200,.28);color:var(--brand-900);}
.article-cover{margin:26px auto 0;max-width:960px;}
.article-cover img{width:100%;height:320px;object-fit:cover;border-radius:var(--radius-img);border:1px solid var(--line);box-shadow:var(--shadow-s);}
@media (min-width:768px){.article-cover img{height:400px;}}
.article-layout{display:block;padding:34px 0 8px;}
.article-main{max-width:780px;margin:0 auto;}
.article-body{
  background:var(--bg-000);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 20px;box-shadow:var(--shadow-s);
  font-size:17px;line-height:1.9;color:var(--ink-600);
  overflow-wrap:break-word;
}
@media (min-width:768px){.article-body{padding:38px 40px;}}
.article-body h2{
  position:relative;
  margin:34px 0 16px;padding-left:14px;
  font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:700;color:var(--ink-900);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--brand-500);
}
.article-body h3{margin:26px 0 10px;font-size:18px;line-height:1.4;font-weight:600;color:var(--ink-900);}
.article-body p{margin:0 0 1.1em;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.5em;}
.article-body li{margin-bottom:.5em;}
.article-body blockquote{
  margin:1.4em 0;padding:16px 18px;
  background:var(--brand-100);border-left:4px solid var(--brand-500);border-radius:0 12px 12px 0;
  color:var(--ink-900);font-size:16px;
}
.article-body img{border-radius:var(--radius-img);border:1px solid var(--line);margin:18px auto;}
.article-body figure{margin:22px 0;}
.article-body figcaption{margin-top:8px;text-align:center;font-size:13px;color:var(--ink-400);}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body thead th{background:var(--bg-100);color:var(--ink-900);font-weight:600;}
.article-body tbody tr:nth-child(even){background:var(--bg-050);}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.article-note{
  margin:0 0 22px;padding:14px 16px;border-radius:12px;
  background:var(--bg-100);border:1px dashed var(--line);
  font-size:14px;line-height:1.7;color:var(--ink-600);
}
.empty-state{
  text-align:center;padding:52px 22px;border-radius:var(--radius-card);
  background:var(--brand-100);border:1px solid rgba(23,166,122,.18);
}
.empty-state svg{width:40px;height:40px;margin:0 auto 14px;color:var(--brand-700);}
.empty-state h2{margin:0 0 8px;font-size:20px;font-weight:700;color:var(--ink-900);}
.empty-state p{margin:0 auto 20px;max-width:520px;color:var(--ink-600);font-size:15px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 0;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:6px;
  background:var(--bg-100);color:var(--ink-600);font-size:12px;font-weight:600;letter-spacing:.04em;
  border:1px solid var(--line);
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.tag:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-100);}

/* section */
.section{padding:48px 0;}
@media (min-width:768px){.section{padding:64px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
.section-title{margin:0;font-size:clamp(21px,2.6vw,28px);line-height:1.3;font-weight:700;color:var(--ink-900);}
.section-sub{margin:6px 0 0;font-size:14px;color:var(--ink-600);}
.text-link{font-size:14px;font-weight:600;color:var(--brand-700);}
.text-link:hover{color:var(--brand-500);}

/* cards */
.card-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-000);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-s);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:var(--brand-100);}
.card:hover .card-title{color:var(--brand-700);}
.card-media{position:relative;overflow:hidden;}
.card-media img{width:100%;height:190px;object-fit:cover;transition:transform .3s ease-out;}
.card:hover .card-media img{transform:scale(1.03);}
.card-media .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.92);color:var(--brand-700);}
.card-body{padding:18px;display:flex;flex-direction:column;flex:1;}
.card-title{margin:0 0 8px;font-size:18px;line-height:1.4;font-weight:600;color:var(--ink-900);transition:color .18s ease-out;}
.card-desc{margin:0;font-size:14px;line-height:1.7;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-400);}
.card-foot .num{font-variant-numeric:tabular-nums;}
.card-foot svg{width:16px;height:16px;color:var(--brand-700);}

/* cta band */
.cta-band{
  border-radius:24px;padding:30px 22px;color:#fff;
  background:linear-gradient(180deg,var(--brand-700),var(--brand-900));
  box-shadow:var(--shadow-m);
  display:flex;flex-direction:column;gap:22px;
}
@media (min-width:768px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:38px 40px;gap:32px;}}
.cta-band h2{margin:0 0 10px;font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:700;color:#fff;}
.cta-band p{margin:0;font-size:15px;line-height:1.75;color:rgba(255,255,255,.82);max-width:560px;}
.cta-list{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:10px 20px;}
.cta-list li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.92);}
.cta-list svg{width:16px;height:16px;color:var(--mint-300);flex:0 0 auto;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-actions .btn{width:100%;}
@media (min-width:768px){.cta-actions .btn{width:auto;}}
.btn-on-dark{background:#fff;color:var(--brand-900);}
.btn-on-dark:hover{background:var(--brand-100);color:var(--brand-900);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);border-radius:var(--radius-btn);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.7);}

.back-wrap{display:flex;justify-content:center;padding:48px 0;}

/* footer */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;padding:44px 0 28px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 32px;}}
.footer-logo{display:flex;align-items:center;gap:9px;color:#fff;font-size:17px;font-weight:700;margin-bottom:12px;}
.footer-logo svg{width:24px;height:24px;}
.footer-about{margin:0;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:320px;}
.footer-title{margin:0 0 14px;font-size:15px;font-weight:700;color:#fff;}
.footer-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-list a:hover{color:var(--mint-300);}
.footer-contact{margin:0;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:8px 24px;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* roulang page: category1 */
:root{
    --brand-900:#0A4A3F;
    --brand-700:#0E7C66;
    --brand-500:#17A67A;
    --brand-100:#DFF3EA;
    --accent-500:#FF6B35;
    --accent-600:#F4551F;
    --mint-300:#8FE3C8;
    --bg-000:#FFFFFF;
    --bg-050:#F6FAF8;
    --bg-100:#EEF5F1;
    --ink-900:#0C1F1A;
    --ink-600:#4A5D57;
    --ink-400:#8A9A94;
    --line:#E2EDE8;
    --shadow-s:0 2px 10px rgba(12,31,26,.06);
    --shadow-m:0 10px 24px rgba(12,31,26,.10);
    --shadow-l:0 18px 44px rgba(12,31,26,.14);
    --r-card:16px;
    --r-img:14px;
  }
  *,*::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","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink-900);
    background:var(--bg-050);
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul{list-style:none;padding:0;}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}

  .container{max-width:1200px;margin:0 auto;padding:0 16px;}
  @media(min-width:768px){.container{padding:0 24px;}}
  @media(min-width:1280px){.container{padding:0 32px;}}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-s);
  }
  .header-inner{display:flex;align-items:center;gap:14px;min-height:64px;}
  @media(min-width:768px){.header-inner{min-height:72px;}}
  .logo{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
  .logo svg{width:26px;height:26px;flex:0 0 auto;}
  .logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
  @media(min-width:768px){.logo-text{font-size:18px;}}
  .main-nav{display:none;}
  @media(min-width:1024px){
    .main-nav{display:flex;align-items:center;gap:4px;margin-left:16px;}
  }
  .nav-link{position:relative;padding:8px 12px;font-size:15px;color:var(--ink-600);transition:color .18s ease-out;}
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
    background:var(--brand-700);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
  }
  .nav-link:hover{color:var(--brand-700);}
  .nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
  .nav-link.active{color:var(--brand-700);font-weight:700;}
  .header-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
  .search-box{
    display:none;align-items:center;gap:8px;height:40px;width:220px;padding:0 14px;
    background:var(--bg-050);border:1px solid var(--line);border-radius:999px;
    transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  @media(min-width:1024px){.search-box{display:flex;width:240px;}}
  .search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(23,166,122,.16);}
  .search-icon{width:16px;height:16px;color:var(--ink-400);flex:0 0 auto;}
  .search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink-900);}
  .search-box input::placeholder{color:var(--ink-400);}
  .menu-toggle{
    display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;
    border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink-600);cursor:pointer;
    transition:background .18s ease-out,color .18s ease-out;
  }
  .menu-toggle:hover{background:var(--bg-100);color:var(--brand-700);}
  @media(min-width:1024px){.menu-toggle{display:none;}}
  .mobile-panel{
    display:none;background:#fff;border-top:1px solid var(--line);box-shadow:var(--shadow-m);
  }
  .mobile-panel.open{display:block;}
  @media(min-width:1024px){.mobile-panel{display:none !important;}}
  .mobile-panel .container{padding-top:8px;padding-bottom:20px;}
  .mobile-panel a{
    display:block;height:48px;line-height:48px;padding:0 4px;font-size:16px;
    color:var(--ink-600);border-bottom:1px solid var(--line);
  }
  .mobile-panel a.active{color:var(--brand-700);font-weight:700;}
  .mobile-panel .btn{width:100%;margin-top:16px;}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;
    font-size:15px;font-weight:600;border-radius:999px;border:1px solid transparent;cursor:pointer;
    transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  }
  .btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(255,107,53,.28);}
  .btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,107,53,.34);}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(255,107,53,.26);}
  .btn-outline{background:#fff;color:var(--brand-700);border-color:var(--brand-700);}
  .btn-outline:hover{background:var(--brand-100);}
  .btn-outline:active{transform:translateY(1px);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:15px;
    border-bottom:1px solid transparent;transition:border-color .18s ease-out,color .18s ease-out;
  }
  .link-arrow:hover{border-color:var(--brand-700);}
  .link-arrow svg{width:16px;height:16px;transition:transform .18s ease-out;}
  .link-arrow:hover svg{transform:translateX(3px);}

  /* ---------- section base ---------- */
  .section{padding:48px 0;}
  @media(min-width:768px){.section{padding:64px 0;}}
  @media(min-width:1024px){.section{padding:88px 0;}}
  .section-alt{background:var(--bg-100);}
  .section-white{background:#fff;}
  .section-head{max-width:760px;margin-bottom:28px;}
  .section-tag{
    display:inline-flex;align-items:center;gap:6px;background:var(--brand-100);color:var(--brand-700);
    font-size:12px;font-weight:600;letter-spacing:.04em;border-radius:6px;padding:5px 10px;margin-bottom:14px;
  }
  .section-title{
    position:relative;font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;
    padding-left:14px;letter-spacing:-.01em;
  }
  .section-title::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--brand-700);
  }
  .section-desc{margin-top:14px;color:var(--ink-600);font-size:16px;line-height:1.8;}

  /* ---------- hero ---------- */
  .page-hero{
    position:relative;overflow:hidden;background:var(--bg-100);
    padding:32px 0 56px;
  }
  @media(min-width:768px){.page-hero{padding:44px 0 72px;}}
  @media(min-width:1024px){.page-hero{padding:56px 0 88px;}}
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background-image:repeating-linear-gradient(135deg,rgba(14,124,102,.06) 0 1px,transparent 1px 14px);
    pointer-events:none;
  }
  .hero-wave{position:absolute;left:0;right:0;bottom:-1px;line-height:0;pointer-events:none;}
  .hero-wave svg{width:100%;height:56px;display:block;}
  .hero-grid{position:relative;z-index:2;display:grid;gap:32px;align-items:center;}
  @media(min-width:1024px){
    .hero-grid{grid-template-columns:1fr 1fr;gap:56px;}
  }
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:16px;}
  .breadcrumb a{color:var(--brand-700);transition:color .18s ease-out;}
  .breadcrumb a:hover{color:var(--brand-900);}
  .breadcrumb .crumb-current{color:var(--ink-600);}
  .page-hero h1{
    font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:700;letter-spacing:-.01em;
  }
  .hero-sub{margin-top:16px;font-size:18px;font-weight:600;color:var(--brand-700);}
  .hero-desc{margin-top:14px;color:var(--ink-600);font-size:16px;line-height:1.8;max-width:560px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .hero-metrics{display:flex;flex-wrap:wrap;gap:28px;margin-top:32px;}
  .hero-metrics .metric-item{min-width:96px;}
  .metric-num{font-size:24px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.1;}
  .metric-label{margin-top:4px;font-size:13px;color:var(--ink-400);}
  .hero-media{position:relative;}
  .hero-media img{
    width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);
    border:1px solid var(--line);box-shadow:var(--shadow-l);
  }
  .hero-float{
    position:absolute;left:14px;bottom:14px;display:flex;align-items:center;gap:10px;
    background:rgba(255,255,255,.94);backdrop-filter:blur(6px);
    border:1px solid var(--line);border-radius:12px;padding:10px 14px;box-shadow:var(--shadow-m);
  }
  .pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-500);flex:0 0 auto;}
  .hero-float strong{font-size:15px;font-variant-numeric:tabular-nums;}
  .hero-float span{font-size:13px;color:var(--ink-400);}

  /* ---------- stats strip ---------- */
  .stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
  @media(min-width:768px){.stats-grid{grid-template-columns:repeat(4,1fr);gap:24px;}}
  .stat-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;
    box-shadow:var(--shadow-s);transition:transform .18s ease-out,box-shadow .18s ease-out;
  }
  .stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);}
  .stat-card .stat-num{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.1;}
  .stat-card .stat-label{margin-top:6px;font-size:14px;color:var(--ink-600);}
  .stat-card .stat-note{margin-top:8px;font-size:13px;color:var(--ink-400);}

  /* ---------- split blocks ---------- */
  .split{display:grid;gap:28px;align-items:center;margin-bottom:56px;}
  .split:last-child{margin-bottom:0;}
  @media(min-width:1024px){
    .split{grid-template-columns:1fr 1fr;gap:56px;margin-bottom:72px;}
    .split--media-right .split-media{order:2;}
    .split--media-right .split-copy{order:1;}
  }
  .split-media img{
    width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);
    border:1px solid var(--line);box-shadow:var(--shadow-m);
  }
  .split-index{
    display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
    background:var(--brand-100);color:var(--brand-700);font-weight:700;font-size:14px;
    font-variant-numeric:tabular-nums;margin-bottom:14px;
  }
  .split h3{font-size:20px;font-weight:700;line-height:1.4;}
  @media(min-width:768px){.split h3{font-size:24px;}}
  .split p{margin-top:12px;color:var(--ink-600);line-height:1.8;}
  .check-list{margin-top:18px;display:grid;gap:10px;}
  .check-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--ink-900);}
  .check-list svg{width:18px;height:18px;flex:0 0 auto;margin-top:4px;color:var(--brand-500);}
  .split .link-arrow{margin-top:20px;}

  /* ---------- channel tags ---------- */
  .tag-scroller{display:flex;gap:10px;overflow-x:auto;padding:4px 0 14px;scrollbar-width:thin;}
  .tag-scroller::-webkit-scrollbar{height:6px;}
  .tag-scroller::-webkit-scrollbar-thumb{background:var(--line);border-radius:6px;}
  .channel-tag{
    flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;
    background:#fff;border:1px solid var(--line);border-radius:999px;font-size:14px;color:var(--ink-600);
    transition:border-color .18s ease-out,color .18s ease-out,background .18s ease-out,transform .18s ease-out;
  }
  .channel-tag:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-100);transform:translateY(-1px);}
  .channel-tag.is-active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;font-weight:600;}
  .channel-tag .count{font-size:12px;color:inherit;opacity:.7;font-variant-numeric:tabular-nums;}

  /* ---------- steps ---------- */
  .steps-grid{display:grid;gap:20px;}
  @media(min-width:768px){.steps-grid{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1024px){.steps-grid{grid-template-columns:repeat(3,1fr);}}
  .step-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
    box-shadow:var(--shadow-s);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:var(--brand-100);}
  .step-card.is-anchor{background:var(--brand-100);border-color:var(--brand-500);}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:999px;
    background:var(--brand-700);color:#fff;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  }
  .step-card h3{margin-top:14px;font-size:18px;font-weight:600;}
  .step-card p{margin-top:8px;font-size:15px;color:var(--ink-600);line-height:1.75;}

  /* ---------- faq ---------- */
  .faq-wrap{max-width:860px;margin:0 auto;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;
    overflow:hidden;transition:background .18s ease-out,border-color .18s ease-out;
  }
  .faq-item summary{
    display:flex;align-items:center;gap:14px;min-height:56px;padding:14px 20px;cursor:pointer;list-style:none;
    font-size:16px;font-weight:600;color:var(--ink-900);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary .faq-index{
    flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;
    border-radius:8px;background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:700;
    font-variant-numeric:tabular-nums;
  }
  .faq-item summary .faq-mark{
    margin-left:auto;flex:0 0 auto;width:22px;height:22px;color:var(--brand-700);position:relative;
  }
  .faq-item summary .faq-mark::before,
  .faq-item summary .faq-mark::after{
    content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%);
  }
  .faq-item summary .faq-mark::before{width:12px;height:2px;}
  .faq-item summary .faq-mark::after{width:2px;height:12px;transition:transform .18s ease-out;}
  .faq-item[open] summary .faq-mark::after{transform:translate(-50%,-50%) scaleY(0);}
  .faq-item[open]{background:var(--bg-050);border-left:3px solid var(--brand-700);}
  .faq-item p{padding:0 20px 20px 62px;color:var(--ink-600);font-size:15px;line-height:1.8;}
  @media(max-width:520px){
    .faq-item p{padding-left:20px;}
    .faq-item summary{font-size:15px;gap:10px;}
  }

  /* ---------- final cta ---------- */
  .cta-block{
    position:relative;overflow:hidden;border-radius:24px;padding:32px 24px;color:#fff;
    background:linear-gradient(160deg,#0E7C66 0%,#0A4A3F 100%);box-shadow:var(--shadow-l);
  }
  @media(min-width:768px){.cta-block{padding:48px 44px;}}
  .cta-grid{display:grid;gap:28px;align-items:center;}
  @media(min-width:1024px){.cta-grid{grid-template-columns:1.3fr .9fr;gap:48px;}}
  .cta-block h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;}
  .cta-block p{margin-top:14px;color:rgba(255,255,255,.84);font-size:16px;line-height:1.8;max-width:520px;}
  .cta-list{margin-top:20px;display:grid;gap:10px;}
  .cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:rgba(255,255,255,.94);}
  .cta-list svg{width:18px;height:18px;flex:0 0 auto;margin-top:3px;color:var(--mint-300);}
  .cta-actions{display:flex;flex-direction:column;gap:12px;}
  @media(min-width:520px){.cta-actions{flex-direction:row;flex-wrap:wrap;}}
  .cta-actions .btn{width:100%;}
  @media(min-width:520px){.cta-actions .btn{width:auto;}}
  .cta-block .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
  .cta-block .btn-outline:hover{background:rgba(255,255,255,.14);border-color:#fff;}

  /* ---------- back link ---------- */
  .back-row{display:flex;flex-wrap:wrap;justify-content:center;gap:22px;margin-top:36px;}
  .back-row a{font-size:14px;color:var(--ink-600);transition:color .18s ease-out;}
  .back-row a:hover{color:var(--brand-700);}

  /* ---------- footer ---------- */
  .site-footer{background:var(--brand-900);color:#fff;padding:48px 0 24px;margin-top:0;}
  @media(min-width:768px){.site-footer{padding:64px 0 28px;}}
  .footer-grid{display:grid;gap:32px;}
  @media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
  .footer-logo{display:flex;align-items:center;gap:8px;font-size:17px;font-weight:700;}
  .footer-logo svg{width:24px;height:24px;}
  .footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:320px;}
  .footer-title{font-size:15px;font-weight:600;margin-bottom:14px;}
  .footer-list li{margin-bottom:10px;}
  .footer-list a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease-out;}
  .footer-list a:hover{color:var(--mint-300);}
  .footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);}
  .footer-bottom{
    margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:12px 24px;font-size:13px;color:rgba(255,255,255,.56);
    font-variant-numeric:tabular-nums;
  }
  @media(max-width:520px){
    .hero-metrics{gap:20px;}
    .hero-actions .btn{width:100%;}
    .cta-actions{flex-direction:column;}
  }

/* roulang page: category2 */
:root{
  --brand-900:#0A4A3F;
  --brand-700:#0E7C66;
  --brand-500:#17A67A;
  --brand-100:#DFF3EA;
  --accent-500:#FF6B35;
  --accent-600:#F4551F;
  --mint-300:#8FE3C8;
  --bg-000:#FFFFFF;
  --bg-050:#F6FAF8;
  --bg-100:#EEF5F1;
  --ink-900:#0C1F1A;
  --ink-600:#4A5D57;
  --ink-400:#8A9A94;
  --line:#E2EDE8;
  --shadow-s:0 2px 10px rgba(12,31,26,.06);
  --shadow-m:0 10px 24px rgba(12,31,26,.10);
  --shadow-l:0 18px 44px rgba(12,31,26,.14);
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-badge:6px;
  --font:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han 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:1.75;
  color:var(--ink-900);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:solid;border-width:1px;border-color:var(--line);}
a{color:inherit;text-decoration:none;}
a.text-link{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;transition:color .18s ease-out;}
a.text-link:hover{color:var(--brand-500);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1280px){.container{padding-left:32px;padding-right:32px;}}
.num{font-variant-numeric:tabular-nums;font-weight:700;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg-000);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-s);
}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
@media (min-width:768px){.header-inner{height:72px;}}
.logo{display:flex;align-items:center;gap:9px;flex:0 0 auto;}
.logo svg{width:26px;height:26px;flex:0 0 auto;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-0.01em;white-space:nowrap;color:var(--ink-900);}
@media (min-width:768px){.logo-text{font-size:18px;}}
.main-nav{display:none;align-items:center;gap:26px;margin-left:12px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-600);padding:6px 0;
  transition:color .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand-700);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-700);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:none;align-items:center;gap:8px;
  background:var(--bg-050);border:1px solid var(--line);
  border-radius:999px;padding:0 14px;height:42px;width:220px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
@media (min-width:1280px){.search-box{display:flex;width:250px;}}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(23,166,122,.16);}
.search-icon{width:16px;height:16px;color:var(--ink-400);flex:0 0 auto;}
.search-box input{border:0;background:transparent;width:100%;font-size:14px;outline:none;}
.search-box input::placeholder{color:var(--ink-400);}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  color:var(--brand-700);background:var(--bg-050);transition:background .18s ease-out;
}
.menu-toggle:hover{background:var(--brand-100);}
@media (min-width:1024px){.menu-toggle{display:none;}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-size:15px;font-weight:600;line-height:1;
  padding:0 22px;height:46px;border:1px solid transparent;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(255,107,53,.28);}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,107,53,.34);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(255,107,53,.26);}
.btn-ghost{background:var(--bg-000);color:var(--brand-700);border-color:var(--brand-700);border-radius:var(--r-btn);}
.btn-ghost:hover{background:var(--brand-100);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:64px 0 0 0;background:var(--bg-000);z-index:55;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
  display:flex;flex-direction:column;padding:8px 16px 24px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-drawer a.m-link{
  display:flex;align-items:center;height:48px;font-size:16px;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.m-link.active{color:var(--brand-700);font-weight:600;}
.mobile-drawer .m-cta{margin-top:auto;padding-top:20px;}
@media (min-width:1024px){.mobile-drawer{display:none;}}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);padding:18px 0 0;}
.breadcrumb a{color:var(--ink-600);transition:color .18s ease-out;}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:var(--ink-400);}
.breadcrumb .current{color:var(--ink-900);font-weight:600;}

/* ---------- hero-lite ---------- */
.hero-lite{
  position:relative;overflow:hidden;
  background:var(--bg-100);
  border-bottom:1px solid var(--line);
}
.hero-lite .arc{
  position:absolute;left:0;right:0;bottom:-1px;width:100%;height:120px;opacity:.55;pointer-events:none;
}
.hero-lite-inner{position:relative;padding:36px 0 34px;}
@media (min-width:768px){.hero-lite-inner{padding:52px 0 46px;}}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-100);color:var(--brand-700);
  border-radius:var(--r-badge);padding:5px 12px;font-size:12px;font-weight:600;letter-spacing:.04em;
}
.hero-lite h1{
  margin-top:16px;font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:700;letter-spacing:-0.01em;max-width:900px;
}
.hero-lite .lead{margin-top:16px;max-width:720px;font-size:16px;color:var(--ink-600);}
.hero-lite .hero-meta{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--ink-600);}
.hero-lite .hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.dot-mark{width:8px;height:8px;border-radius:50%;background:var(--brand-500);flex:0 0 auto;}

/* ---------- anchor bar ---------- */
.anchor-wrap{background:var(--bg-000);border-bottom:1px solid var(--line);position:sticky;top:64px;z-index:40;}
@media (min-width:768px){.anchor-wrap{top:72px;}}
.anchor-bar{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-bar::-webkit-scrollbar{display:none;}
.anchor-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;border-radius:999px;
  background:var(--bg-050);border:1px solid var(--line);
  font-size:14px;color:var(--ink-600);white-space:nowrap;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.anchor-chip:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}

/* ---------- sections ---------- */
.section{padding:48px 0;}
@media (min-width:768px){.section{padding:64px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-head{max-width:760px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;}
.section-head h2::before{
  content:"";display:block;width:44px;height:4px;border-radius:3px;background:var(--brand-700);margin-bottom:16px;
}
.section-head p{margin-top:14px;color:var(--ink-600);}
.section-head .head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:36px;}
.timeline::before{
  content:"";position:absolute;left:25px;top:10px;bottom:14px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand-500),var(--brand-100));
}
.tl-item{display:grid;grid-template-columns:52px 1fr;gap:16px;padding-bottom:22px;}
@media (min-width:768px){.tl-item{grid-template-columns:72px 1fr;gap:24px;padding-bottom:28px;}}
.tl-marker{position:relative;display:flex;justify-content:center;padding-top:6px;}
.tl-dot{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--bg-000);border:2px solid var(--brand-500);color:var(--brand-700);
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;box-shadow:var(--shadow-s);
}
@media (min-width:768px){.tl-dot{width:46px;height:46px;font-size:14px;}}
.tl-card{
  background:var(--bg-000);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-s);padding:20px;transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
@media (min-width:768px){.tl-card{padding:26px 28px;}}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:var(--brand-100);}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.badge{
  display:inline-flex;align-items:center;
  background:var(--brand-100);color:var(--brand-700);
  border-radius:var(--r-badge);padding:4px 10px;font-size:12px;font-weight:600;letter-spacing:.04em;
}
.tl-time{font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;}
.tl-card h3{margin-top:12px;font-size:18px;font-weight:600;line-height:1.4;}
.tl-card p{margin-top:10px;color:var(--ink-600);}
.check-list{margin-top:14px;display:grid;gap:9px;}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-600);}
.check-list li svg{width:18px;height:18px;flex:0 0 auto;margin-top:4px;color:var(--brand-500);}

/* ---------- tier compare ---------- */
.tier-grid{margin-top:32px;display:grid;gap:18px;grid-template-columns:1fr;}
@media (min-width:640px){.tier-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.tier-grid{grid-template-columns:repeat(3,1fr);}}
.tier-card{
  background:var(--bg-000);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-s);padding:24px;display:flex;flex-direction:column;gap:16px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.tier-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:var(--brand-100);}
.tier-card.is-key{border-color:var(--brand-500);box-shadow:var(--shadow-m);background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-100) 160%);}
.tier-card h3{font-size:18px;font-weight:600;}
.tier-figure{display:flex;align-items:baseline;gap:6px;color:var(--brand-700);}
.tier-figure .figure{font-size:34px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-0.02em;}
.tier-figure .unit{font-size:14px;color:var(--ink-600);}
.tier-rows{border-top:1px solid var(--line);margin-top:2px;padding-top:14px;display:grid;gap:10px;}
.tier-rows div{display:flex;justify-content:space-between;gap:12px;font-size:14px;}
.tier-rows dt,.tier-rows .k{color:var(--ink-400);}
.tier-rows .v{color:var(--ink-900);font-weight:600;text-align:right;}

/* ---------- benefit cards ---------- */
.benefit-grid{margin-top:32px;display:grid;gap:18px;grid-template-columns:1fr;}
@media (min-width:640px){.benefit-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.benefit-grid{grid-template-columns:repeat(4,1fr);}}
.b-card{
  background:var(--bg-000);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-s);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.b-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:var(--brand-100);}
.b-card:hover h3{color:var(--brand-700);}
.b-card figure{margin:0;position:relative;}
.b-card img{width:100%;height:168px;object-fit:cover;border:0;border-radius:0;}
.b-card .b-body{padding:18px 20px 22px;}
.b-card h3{font-size:18px;font-weight:600;transition:color .18s ease-out;}
.b-card p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--ink-600);}
.b-card .b-foot{margin-top:14px;font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;}

/* ---------- stat band ---------- */
.stat-band{background:var(--brand-900);color:#fff;border-radius:24px;padding:32px 24px;}
@media (min-width:768px){.stat-band{padding:44px 40px;}}
.stat-band h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;}
.stat-band p{margin-top:12px;color:rgba(223,243,234,.78);max-width:640px;}
.stat-grid{margin-top:28px;display:grid;gap:20px;grid-template-columns:repeat(2,1fr);}
@media (min-width:1024px){.stat-grid{grid-template-columns:repeat(4,1fr);}}
.stat{border-top:2px solid rgba(143,227,200,.4);padding-top:14px;}
.stat .stat-num{font-size:clamp(26px,3vw,36px);font-weight:700;font-variant-numeric:tabular-nums;color:var(--mint-300);letter-spacing:-0.02em;}
.stat .stat-label{margin-top:6px;font-size:14px;color:rgba(255,255,255,.82);}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:36px auto 0;}
details.faq{
  background:var(--bg-000);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;transition:border-color .18s ease-out,background .18s ease-out;
}
details.faq[open]{background:var(--bg-050);border-left:3px solid var(--brand-500);}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  min-height:56px;padding:14px 18px;font-size:16px;font-weight:600;
}
details.faq summary::-webkit-details-marker{display:none;}
.faq-index{
  flex:0 0 auto;width:26px;height:26px;border-radius:var(--r-badge);
  background:var(--brand-100);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
}
.faq-toggle{margin-left:auto;flex:0 0 auto;width:22px;height:22px;color:var(--brand-700);position:relative;}
.faq-toggle::before,.faq-toggle::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%);
}
.faq-toggle::before{width:14px;height:2px;}
.faq-toggle::after{width:2px;height:14px;transition:opacity .18s ease-out;}
details.faq[open] .faq-toggle::after{opacity:0;}
.faq-body{padding:0 18px 20px 58px;color:var(--ink-600);font-size:15px;line-height:1.85;}

/* ---------- cta ---------- */
.cta-block{
  background:linear-gradient(180deg,var(--brand-700) 0%,var(--brand-900) 100%);
  border-radius:24px;padding:32px 24px;color:#fff;
  box-shadow:var(--shadow-l);
}
@media (min-width:768px){.cta-block{padding:52px 48px;}}
@media (min-width:1024px){.cta-block{padding:56px;}}
.cta-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:1024px){.cta-grid{grid-template-columns:1.05fr 1fr;gap:48px;align-items:start;}}
.cta-block h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;}
.cta-block .cta-desc{margin-top:14px;color:rgba(223,243,234,.85);max-width:520px;}
.cta-list{margin-top:24px;display:grid;gap:12px;}
.cta-list li{display:flex;gap:10px;font-size:15px;color:rgba(255,255,255,.92);}
.cta-list li svg{width:20px;height:20px;flex:0 0 auto;margin-top:3px;color:var(--mint-300);}
.form-card{
  background:var(--bg-000);border-radius:20px;padding:24px;box-shadow:var(--shadow-l);color:var(--ink-900);
}
@media (min-width:768px){.form-card{padding:28px;}}
.form-card h3{font-size:18px;font-weight:600;}
.form-card .form-hint{margin-top:8px;font-size:13px;color:var(--ink-400);}
.field{margin-top:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-600);margin-bottom:7px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);background:var(--bg-050);color:var(--ink-900);
  border-radius:999px;padding:0 18px;height:48px;font-size:15px;outline:none;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
}
.field textarea{border-radius:16px;height:96px;padding:13px 18px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400);}
.field input:focus,.field textarea:focus{
  border-color:var(--brand-500);background:var(--bg-000);box-shadow:0 0 0 3px rgba(23,166,122,.16);
}
.form-card .btn{margin-top:20px;}
.form-note{margin-top:12px;font-size:12px;color:var(--ink-400);}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#fff;margin-top:0;}
.footer-grid{
  display:grid;gap:32px;grid-template-columns:1fr;padding:48px 0 36px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;padding:56px 0 40px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;}}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-0.01em;}
.footer-logo svg{width:26px;height:26px;flex:0 0 auto;}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.78);max-width:360px;}
.footer-title{font-size:15px;font-weight:600;color:var(--mint-300);}
.footer-list{margin-top:14px;display:grid;gap:10px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.78);transition:color .18s ease-out;}
.footer-list a:hover{color:#fff;}
.footer-contact{margin-top:14px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.78);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:8px 20px;
  font-size:13px;color:rgba(255,255,255,.62);font-variant-numeric:tabular-nums;
}

/* ---------- back link ---------- */
.back-links{display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;padding:8px 0 4px;font-size:14px;}

/* roulang page: category3 */
:root{
  --brand-900:#0A4A3F;
  --brand-700:#0E7C66;
  --brand-500:#17A67A;
  --brand-100:#DFF3EA;
  --accent-500:#FF6B35;
  --accent-600:#F4551F;
  --mint-300:#8FE3C8;
  --bg-000:#FFFFFF;
  --bg-050:#F6FAF8;
  --bg-100:#EEF5F1;
  --ink-900:#0C1F1A;
  --ink-600:#4A5D57;
  --ink-400:#8A9A94;
  --line:#E2EDE8;
  --shadow-s:0 2px 10px rgba(12,31,26,.06);
  --shadow-m:0 10px 24px rgba(12,31,26,.10);
  --shadow-l:0 18px 44px rgba(12,31,26,.14);
}
*,*::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","Source Han Sans SC",sans-serif;
  background:var(--bg-050);
  color:var(--ink-900);
  font-size:16px;
  line-height:1.75;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;}
a:hover{color:var(--brand-500);}
button,input{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}

.container{width:100%;margin-left:auto;margin-right:auto;padding-left:16px;padding-right:16px;}
header .container,main .container,footer .container{max-width:1200px;}
@media(min-width:768px){header .container,main .container,footer .container{padding-left:24px;padding-right:24px;}}
@media(min-width:1280px){header .container,main .container,footer .container{padding-left:32px;padding-right:32px;}}
@media(min-width:1280px){header .container,main .container,footer .container{max-width:1200px;}}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-s);}
.header-inner{display:flex;align-items:center;gap:16px;height:64px;}
@media(min-width:768px){.header-inner{height:72px;gap:20px;}}
.logo{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto;text-decoration:none;}
.logo svg{width:26px;height:26px;flex:0 0 auto;}
.logo-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap;}
@media(min-width:768px){.logo-text{font-size:19px;}}
.main-nav{display:none;}
@media(min-width:1024px){.main-nav{display:flex;align-items:center;gap:26px;margin-left:14px;}}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--ink-600);text-decoration:none;transition:color .18s ease-out;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-700);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-700);font-weight:700;}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{display:none;align-items:center;gap:8px;width:210px;height:42px;padding:0 16px;border-radius:999px;background:var(--bg-050);border:1px solid transparent;transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(23,166,122,.16);}
@media(min-width:768px){.search-box{display:none;}}
@media(min-width:1180px){.search-box{display:flex;width:230px;}}
.search-icon{width:16px;height:16px;color:var(--ink-400);flex:0 0 auto;}
.search-box input{width:100%;border:0;background:transparent;outline:none;font-size:14px;}
.search-box input::placeholder{color:var(--ink-400);}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink-600);cursor:pointer;transition:background .18s ease-out,color .18s ease-out;}
.menu-toggle:hover{background:var(--brand-100);color:var(--brand-700);}
@media(min-width:1024px){.menu-toggle{display:none;}}

.mobile-drawer{position:fixed;left:0;right:0;top:64px;bottom:0;z-index:55;background:#fff;border-top:1px solid var(--line);padding:12px 16px 96px;overflow-y:auto;}
@media(min-width:768px){.mobile-drawer{top:72px;}}
.mobile-drawer[hidden]{display:none;}
.mobile-drawer a.drawer-link{display:flex;align-items:center;height:48px;border-bottom:1px solid var(--line);color:var(--ink-600);font-size:16px;text-decoration:none;}
.mobile-drawer a.drawer-link.active{color:var(--brand-700);font-weight:700;}
.drawer-cta{position:fixed;left:16px;right:16px;bottom:20px;}
@media(min-width:1024px){.mobile-drawer{display:none;}}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;text-decoration:none;font-weight:600;transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out;}
.btn-sm{height:40px;padding:0 20px;font-size:14px;border-radius:999px;}
.btn-primary{background:linear-gradient(180deg,var(--accent-500),var(--accent-600));color:#fff;box-shadow:var(--shadow-s);}
.btn-primary:hover{background:linear-gradient(180deg,#ff7d4e,var(--accent-600));color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-m);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-outline{background:#fff;color:var(--brand-700);border:1.5px solid var(--brand-700);border-radius:12px;}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);}
.btn-lg{height:48px;padding:0 28px;font-size:15px;border-radius:999px;}

/* 面包屑 */
.breadcrumb-bar{background:var(--bg-100);border-bottom:1px solid var(--line);}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:14px 0;font-size:13px;color:var(--ink-400);}
.breadcrumb a{color:var(--ink-600);text-decoration:none;}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:var(--ink-400);}
.breadcrumb .current{color:var(--brand-700);font-weight:600;}

/* 通用板块 */
.section{padding:48px 0;}
@media(min-width:768px){.section{padding:64px 0;}}
@media(min-width:1024px){.section{padding:88px 0;}}
.section-alt{background:var(--bg-100);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--brand-700);background:var(--brand-100);border-radius:6px;padding:5px 10px;}
h1,h2,h3{letter-spacing:-.01em;margin:0;}
.h1{font-size:clamp(30px,4.4vw,46px);line-height:1.2;font-weight:700;}
.h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;}
.h3{font-size:18px;line-height:1.4;font-weight:600;}
.lead{font-size:16px;line-height:1.75;color:var(--ink-600);}
.muted{color:var(--ink-600);}
.tiny{font-size:14px;color:var(--ink-400);}

/* Hero */
.cat-hero{position:relative;overflow:hidden;background:var(--bg-100);}
.cat-hero::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(14,124,102,.06) 0 1px,transparent 1px 12px);pointer-events:none;}
.cat-hero .wave{position:absolute;left:0;right:0;bottom:-1px;width:100%;height:64px;}
.cat-hero-inner{position:relative;display:grid;gap:28px;padding:44px 0 56px;}
@media(min-width:1024px){.cat-hero-inner{grid-template-columns:1.15fr .85fr;align-items:center;gap:48px;padding:64px 0 72px;}}
.cat-hero-card{border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-m);background:#fff;}
.cat-hero-card img{width:100%;height:230px;object-fit:cover;}
@media(min-width:768px){.cat-hero-card img{height:300px;}}

.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px;}
.stat-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:var(--shadow-s);}
.stat-num{font-size:24px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat-label{font-size:13px;color:var(--ink-600);margin-top:2px;}

/* 主体分栏 */
.cat-layout{display:grid;gap:32px;}
@media(min-width:1024px){.cat-layout{grid-template-columns:236px 1fr;gap:56px;align-items:start;}}
.toc{display:none;}
@media(min-width:1024px){
  .toc{display:block;position:sticky;top:100px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow-s);}
}
.toc-title{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--ink-400);margin-bottom:10px;}
.toc a{display:block;padding:9px 10px;border-radius:10px;font-size:14px;color:var(--ink-600);text-decoration:none;transition:background .18s ease-out,color .18s ease-out;}
.toc a:hover{background:var(--brand-100);color:var(--brand-700);}
.toc a.active{background:var(--brand-100);color:var(--brand-700);font-weight:600;}
.toc-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-400);line-height:1.7;}

.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow-s);}
@media(min-width:768px){.panel{padding:32px;}}
.panel + .panel{margin-top:24px;}
.panel-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px;}
.panel-num{flex:0 0 auto;width:36px;height:36px;border-radius:10px;background:var(--brand-100);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-weight:700;font-variant-numeric:tabular-nums;}

.check-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
.check-item{display:flex;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:var(--bg-050);transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;}
.check-item:hover{border-color:var(--brand-100);box-shadow:var(--shadow-s);transform:translateY(-2px);}
.check-item svg{flex:0 0 auto;width:20px;height:20px;color:var(--brand-500);margin-top:3px;}
.check-item strong{display:block;font-size:15px;margin-bottom:2px;}
.check-item span{font-size:14px;color:var(--ink-600);line-height:1.7;}

.anchor-card{border-color:var(--brand-500)!important;background:var(--brand-100)!important;box-shadow:var(--shadow-m)!important;}

.step-list{list-style:none;margin:0;padding:0;display:grid;gap:16px;}
.step-item{display:flex;gap:16px;align-items:flex-start;}
.step-dot{flex:0 0 auto;width:34px;height:34px;border-radius:999px;background:var(--brand-700);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;}
.step-body h3{margin-bottom:4px;}

.compare{display:grid;gap:12px;}
@media(min-width:768px){.compare{grid-template-columns:1fr 1fr;gap:16px;}}
.compare-col{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff;}
.compare-head{padding:12px 16px;font-size:14px;font-weight:700;letter-spacing:.02em;}
.compare-col.before .compare-head{background:var(--brand-100);color:var(--brand-900);}
.compare-col.during .compare-head{background:var(--brand-900);color:#fff;}
.compare-col ul{list-style:none;margin:0;padding:8px 16px 16px;}
.compare-col li{display:flex;gap:10px;align-items:flex-start;padding:10px 0;font-size:14px;color:var(--ink-600);border-bottom:1px dashed var(--line);}
.compare-col li:last-child{border-bottom:0;}
.compare-col li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:8px;border-radius:999px;background:var(--brand-500);}

.row-compare{display:grid;gap:10px;border:1px solid var(--line);border-radius:14px;padding:14px 16px;background:#fff;margin-bottom:12px;}
@media(min-width:768px){.row-compare{grid-template-columns:1fr 1fr;gap:24px;align-items:center;}}
.row-cell{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;}
.row-cell .tag{flex:0 0 auto;font-size:12px;font-weight:600;border-radius:6px;padding:3px 8px;letter-spacing:.04em;}
.tag-good{background:var(--brand-100);color:var(--brand-700);}
.tag-bad{background:#FDEDE7;color:var(--accent-600);}
.row-cell p{margin:0;color:var(--ink-600);}
.row-cell p b{color:var(--ink-900);}

/* 图片区 */
.figure{border-radius:14px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-s);}
.figure img{width:100%;height:220px;object-fit:cover;transition:transform .18s ease-out;}
@media(min-width:768px){.figure img{height:280px;}}
.figure:hover img{transform:scale(1.03);}
.figcap{font-size:13px;color:var(--ink-400);text-align:center;margin-top:8px;}

/* CTA */
.cta-block{background:linear-gradient(180deg,var(--brand-700),var(--brand-900));border-radius:24px;padding:32px 24px;color:#fff;box-shadow:var(--shadow-l);}
@media(min-width:768px){.cta-block{padding:48px;}}
@media(min-width:1024px){.cta-block{padding:56px;}}
.cta-grid{display:grid;gap:28px;}
@media(min-width:1024px){.cta-grid{grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}}
.cta-block .h2{color:#fff;}
.cta-list{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:10px;}
.cta-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.88);}
.cta-list svg{flex:0 0 auto;width:18px;height:18px;color:var(--mint-300);margin-top:4px;}
.cta-form{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:22px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;color:rgba(255,255,255,.8);margin-bottom:6px;}
.field input,.field textarea{width:100%;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.94);color:var(--ink-900);border-radius:999px;padding:12px 18px;font-size:14px;outline:none;transition:box-shadow .18s ease-out,border-color .18s ease-out;}
.field textarea{border-radius:14px;min-height:88px;resize:vertical;}
.field input:focus,.field textarea:focus{border-color:var(--mint-300);box-shadow:0 0 0 3px rgba(143,227,200,.35);}
.cta-form .btn{width:100%;}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto;display:grid;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:background .18s ease-out,box-shadow .18s ease-out;}
.faq-item summary{display:flex;align-items:center;gap:14px;height:56px;padding:0 18px;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink-900);list-style:none;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";margin-left:auto;font-size:20px;line-height:1;color:var(--brand-700);}
.faq-item[open] summary::after{content:"−";}
.faq-item[open]{background:var(--bg-050);border-color:var(--brand-100);box-shadow:inset 3px 0 0 var(--brand-700);}
.faq-num{flex:0 0 auto;width:26px;height:26px;border-radius:6px;background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;}
.faq-body{padding:0 18px 20px 58px;font-size:15px;line-height:1.8;color:var(--ink-600);}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.82);margin-top:8px;}
.footer-grid{display:grid;gap:32px;padding:48px 0 28px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 32px;}}
.footer-logo{display:flex;align-items:center;gap:9px;margin-bottom:14px;}
.footer-logo svg{width:26px;height:26px;flex:0 0 auto;}
.footer-logo span{font-size:18px;font-weight:700;color:#fff;}
.footer-about{margin:0;font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:320px;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-list{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-list a{color:rgba(255,255,255,.72);font-size:14px;text-decoration:none;transition:color .18s ease-out;}
.footer-list a:hover{color:var(--mint-300);}
.footer-contact{margin:0;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);}
.footer-bottom{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;align-items:center;border-top:1px solid rgba(255,255,255,.12);padding:18px 0;font-size:13px;color:rgba(255,255,255,.6);}

.back-link{display:flex;justify-content:center;padding:48px 0 8px;}