/* roulang page: index */
:root{
  --brand-500:#00C48C;
  --brand-700:#00795A;
  --brand-300:#6EE7C4;
  --accent-lime:#D8FF3E;
  --accent-violet:#6E5BFF;
  --ink-900:#0A1512;
  --ink-600:#4C5C57;
  --ink-400:#8A9A95;
  --bg:#F4F7F5;
  --surface:#FFFFFF;
  --line:#E3EBE7;
  --brand-grad:linear-gradient(120deg,#00C48C 0%,#31D9B0 45%,#6E5BFF 100%);
  --dark-grad:linear-gradient(135deg,#071713 0%,#0C2B22 55%,#123A2C 100%);
  --r-card:24px;
  --r-lg:18px;
  --r-md:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(10,21,18,.04),0 8px 24px -12px rgba(10,21,18,.12);
  --shadow-2:0 2px 4px rgba(10,21,18,.05),0 18px 40px -18px rgba(10,21,18,.20);
  --sidebar:248px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink-900);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
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:6px}

h1{font-size:clamp(28px,4.6vw,44px);line-height:1.25;font-weight:800;letter-spacing:-0.01em}
h2{font-size:clamp(23px,3.1vw,30px);line-height:1.3;font-weight:800;letter-spacing:-0.01em}
h3{font-size:20px;line-height:1.45;font-weight:700}
.num{font-variant-numeric:tabular-nums;font-weight:800}

.container-x{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}
@media(min-width:1280px){.container-x{padding:0 48px}}

/* ============ App Shell 导航 ============ */
.app-sidebar{
  position:fixed;left:0;top:0;bottom:0;width:88px;z-index:60;
  background:rgba(255,255,255,.92);
  border-right:1px solid var(--line);
  backdrop-filter:blur(12px);
  display:flex;flex-direction:column;
  padding:20px 12px;
  transition:width .2s ease;
}
@media(min-width:1280px){.app-sidebar{width:var(--sidebar);padding:24px 16px}}
.side-brand{display:flex;align-items:center;gap:12px;padding:6px 8px 22px}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  background:var(--brand-grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:15px;
  box-shadow:0 6px 18px -8px rgba(0,196,140,.9);
}
.brand-text{display:none;font-weight:800;font-size:16px;line-height:1.3;letter-spacing:-0.01em}
@media(min-width:1280px){.brand-text{display:block}}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:var(--r-pill);
  color:var(--ink-600);font-size:15px;font-weight:600;
  transition:background .12s ease,color .12s ease,transform .12s ease;
}
.nav-item svg{width:20px;height:20px;flex:0 0 auto;stroke:currentColor}
.nav-item span{display:none;white-space:nowrap}
@media(min-width:1280px){.nav-item span{display:inline}}
.nav-item:hover{background:#F1F6F3;color:var(--ink-900);transform:translateX(2px)}
.nav-item.is-active{background:rgba(0,196,140,.12);color:var(--brand-700)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;
  background:var(--brand-grad);
}
@media(max-width:1279px){
  .nav-item{justify-content:center;padding:0}
  .nav-item.is-active::before{left:-4px}
}
.side-foot{margin-top:auto;padding-top:16px}
.side-badge{
  display:flex;flex-direction:column;gap:6px;
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:10px 12px;background:#FBFFFD;
}
.side-badge strong{font-size:12px;color:var(--brand-700);font-weight:800}
.side-badge em{font-style:normal;font-size:12px;color:var(--ink-400);line-height:1.5}
@media(max-width:1279px){.side-badge{display:none}}

/* 移动端顶栏 + 抽屉 */
.mobile-bar{
  position:fixed;left:0;right:0;top:0;height:56px;z-index:70;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
@media(min-width:1024px){.mobile-bar{display:none}}
.mobile-bar .brand-text{display:block;font-size:15px}
.hamburger{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:12px}
.hamburger:hover{background:#F1F6F3}
.hamburger svg{width:22px;height:22px;stroke:var(--ink-900)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,23,19,.45);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;left:0;top:0;bottom:0;width:280px;max-width:82vw;z-index:90;
  background:var(--surface);transform:translateX(-102%);
  transition:transform .24s cubic-bezier(.4,0,.2,1);
  padding:18px 16px;display:flex;flex-direction:column;
  box-shadow:var(--shadow-2);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:#F4F7F5}
.drawer-close svg{width:20px;height:20px;stroke:var(--ink-900)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  height:48px;display:flex;align-items:center;justify-content:space-between;
  font-size:16px;font-weight:600;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-700)}
.drawer-note{margin-top:auto;font-size:12px;color:var(--ink-400);line-height:1.7}

/* 主区偏移 */
.pad-shell{transition:padding .2s ease}
@media(min-width:1024px){.pad-shell{padding-left:88px}}
@media(min-width:1280px){.pad-shell{padding-left:var(--sidebar)}}
.site-main{padding-top:56px}
@media(min-width:1024px){.site-main{padding-top:0}}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background-image:
    linear-gradient(135deg,rgba(7,23,19,.86) 0%,rgba(12,43,34,.78) 55%,rgba(18,58,44,.74) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  color:#fff;
  border-radius:0 0 32px 32px;
}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;pointer-events:none}
.hero::before{width:560px;height:560px;left:-160px;top:-180px;background:radial-gradient(circle,rgba(0,196,140,.18),transparent 70%)}
.hero::after{width:620px;height:620px;right:-200px;bottom:-260px;background:radial-gradient(circle,rgba(110,91,255,.16),transparent 70%)}
.hero-inner{position:relative;z-index:2;padding:52px 0 64px}
@media(min-width:1024px){.hero-inner{padding:72px 0 88px}}
.hero-grid{display:grid;gap:40px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:32px}}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
  font-size:13px;color:#DFF6EE;font-weight:600;
}
.hero-tag i{width:8px;height:8px;border-radius:50%;background:var(--brand-grad);display:block}
.hero h1{margin:18px 0 16px;color:#fff}
.hero h1 mark{background:linear-gradient(transparent 62%,rgba(216,255,62,.42) 62%);color:#fff}
.hero-sub{font-size:17px;color:rgba(255,255,255,.82);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.hero-badges li{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  font-size:13px;color:rgba(255,255,255,.86);
}
.hero-badges li span{width:6px;height:6px;border-radius:50%;background:var(--accent-lime);display:block}

.reel-stack{position:relative;height:420px;margin-top:8px}
@media(min-width:1024px){.reel-stack{height:520px}}
.reel-stack-card{
  position:absolute;width:172px;aspect-ratio:9/16;border-radius:var(--r-card);
  overflow:hidden;border:1px solid rgba(255,255,255,.16);
  box-shadow:0 24px 50px -22px rgba(0,0,0,.7);
  background:#0C2B22;
}
.reel-stack-card img{width:100%;height:100%;object-fit:cover}
@media(min-width:768px){.reel-stack-card{width:200px}}
.sc-1{left:0;top:56px;transform:rotate(-7deg)}
.sc-2{left:50%;top:0;transform:translateX(-50%);z-index:3;animation:floaty 6s ease-in-out infinite}
.sc-3{right:0;top:56px;transform:rotate(7deg)}
@keyframes floaty{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-12px)}}
.sc-caption{
  position:absolute;left:50%;bottom:8px;transform:translateX(-50%);
  font-size:12px;color:rgba(255,255,255,.7);white-space:nowrap;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .16s ease,box-shadow .16s ease,filter .16s ease,background .16s ease,color .16s ease;
}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 12px 26px -14px rgba(0,196,140,.95)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 18px 34px -16px rgba(0,196,140,1)}
.btn-primary:active{transform:translateY(1px)}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-outline{border:1px solid var(--line);background:#fff;color:var(--brand-700);min-height:44px;padding:0 20px;border-radius:var(--r-pill)}
.btn-outline:hover{border-color:var(--brand-300);background:#F7FFFC;transform:translateY(-2px)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-700);
  transition:gap .16s ease,color .16s ease;
}
.link-more:hover{gap:10px;color:var(--brand-500)}
.link-ghost{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;
  color:#fff;border-bottom:2px solid rgba(255,255,255,.35);padding-bottom:4px;
  transition:border-color .16s ease,color .16s ease;
}
.link-ghost:hover{border-color:var(--accent-lime);color:var(--accent-lime)}

/* ============ 板块通用 ============ */
.sec{padding:48px 0}
@media(min-width:1024px){.sec{padding:80px 0}}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:800;color:var(--brand-700);letter-spacing:.06em;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:3px;background:var(--brand-grad)}
.sec-head h2{margin-top:10px}
.sec-desc{margin-top:10px;font-size:15px;color:var(--ink-600);max-width:640px}

/* 横滑容器 */
.rail{
  display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 0 18px;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}
.rail>*{scroll-snap-align:start;flex:0 0 auto}
.rail-wrap{position:relative}
.rail-wrap::before,.rail-wrap::after{
  content:"";position:absolute;top:0;bottom:18px;width:32px;pointer-events:none;z-index:2;
}
.rail-wrap::before{left:-4px;background:linear-gradient(90deg,var(--bg),rgba(244,247,245,0))}
.rail-wrap::after{right:-4px;background:linear-gradient(270deg,var(--bg),rgba(244,247,245,0))}

/* 竖屏片段卡 */
.reel-card{
  position:relative;width:172px;aspect-ratio:9/16;border-radius:var(--r-card);
  overflow:hidden;background:#0C2B22;border:1px solid var(--line);
  box-shadow:var(--shadow-1);transition:box-shadow .18s ease,transform .18s ease;
}
@media(min-width:768px){.reel-card{width:196px}}
@media(min-width:1280px){.reel-card{width:calc((100% - 64px)/5)}}
.reel-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px)}
.reel-card img{width:100%;height:100%;object-fit:cover}
.reel-card .mask{
  position:absolute;left:0;right:0;bottom:0;height:46%;
  background:linear-gradient(180deg,rgba(7,23,19,0),rgba(7,23,19,.88));
}
.reel-pill{
  position:absolute;left:10px;top:10px;
  font-size:12px;font-weight:700;color:#fff;
  background:rgba(7,23,19,.6);border:1px solid rgba(255,255,255,.2);
  padding:3px 10px;border-radius:var(--r-pill);
}
.reel-title{
  position:absolute;left:12px;right:12px;bottom:14px;
  font-size:14px;font-weight:700;color:#fff;line-height:1.45;
}
.reel-play{
  position:absolute;right:12px;bottom:12px;width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center;
  transition:transform .16s ease,background .16s ease;
}
.reel-card:hover .reel-play{transform:scale(1.06);background:var(--accent-lime)}
.reel-play svg{width:16px;height:16px;fill:var(--ink-900)}

/* 三步流程 */
.steps{display:grid;gap:20px}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
.step-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px 24px;box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.step-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px);border-color:var(--brand-300)}
.step-no{
  font-size:34px;line-height:1;font-weight:800;
  background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.step-card h3{margin:14px 0 8px}
.step-card p{font-size:15px;color:var(--ink-600)}
.step-line{
  display:flex;align-items:center;gap:8px;margin-top:18px;font-size:13px;color:var(--ink-400);
}
.step-line i{display:block;height:1px;flex:1;background:var(--line)}

/* 编号清单 */
.checklist{display:grid;gap:0}
@media(min-width:1024px){.checklist{grid-template-columns:1fr 1fr;column-gap:40px}}
.check-item{
  display:flex;align-items:center;gap:18px;
  padding:20px 8px;border-bottom:1px solid var(--line);
  transition:background .16s ease,transform .16s ease;
}
.check-item:hover{background:#F7FBF9}
.check-no{
  flex:0 0 auto;font-size:26px;font-weight:800;line-height:1;
  background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.check-thumb{width:64px;height:64px;border-radius:var(--r-md);overflow:hidden;flex:0 0 auto;background:#E8EFEC}
.check-thumb img{width:100%;height:100%;object-fit:cover}
.check-body{flex:1;min-width:0}
.check-body h3{font-size:16px;margin-bottom:4px}
.check-body p{font-size:14px;color:var(--ink-600)}
.check-arrow{flex:0 0 auto;color:var(--ink-400);transition:transform .16s ease,color .16s ease}
.check-item:hover .check-arrow{transform:translateX(3px);color:var(--brand-700)}

/* 口碑 */
.review-card{
  width:280px;background:var(--surface);border:1px solid var(--line);
  border-radius:20px;padding:20px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;gap:12px;
  transition:box-shadow .18s ease,transform .18s ease;
}
.review-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  background:var(--brand-grad);color:#fff;font-weight:800;font-size:14px;
  display:flex;align-items:center;justify-content:center;
}
.review-name{font-size:14px;font-weight:700}
.stars{display:flex;gap:2px;margin-top:2px}
.stars svg{width:13px;height:13px;fill:var(--brand-500)}
.review-text{font-size:14px;color:var(--ink-600);line-height:1.7}
.review-tag{
  align-self:flex-start;font-size:12px;font-weight:700;color:var(--brand-700);
  background:rgba(0,196,140,.12);padding:4px 10px;border-radius:var(--r-pill);
}

/* CMS 资讯卡 */
.news-grid{display:grid;gap:24px}
@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:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-1);transition:box-shadow .18s ease,transform .18s ease;
}
.news-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E8EFEC}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-pill{
  position:absolute;left:12px;top:12px;
  font-size:12px;font-weight:700;color:#fff;
  background:rgba(7,23,19,.72);padding:4px 10px;border-radius:var(--r-pill);
}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.news-title{
  font-size:17px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-sum{
  margin-top:10px;font-size:14px;color:var(--ink-600);line-height:1.7;
  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;justify-content:space-between;
  font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;
}
.news-foot .news-arrow{transition:transform .16s ease;color:var(--brand-700);font-weight:800}
.news-card:hover .news-arrow{transform:translateX(3px)}
.empty-box{
  min-height:180px;border:1px dashed var(--line);background:#FAFDFB;
  border-radius:var(--r-card);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:12px;padding:32px;text-align:center;
}
.empty-icon{
  width:52px;height:52px;border-radius:50%;background:rgba(0,196,140,.12);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);font-size:22px;font-weight:800;
}
.empty-box p{font-size:15px;color:var(--ink-600)}

/* FAQ */
.faq-list{display:grid;gap:14px}
@media(min-width:1024px){.faq-list{grid-template-columns:1fr 1fr;align-items:start}}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:0 22px;box-shadow:var(--shadow-1);transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:var(--brand-300)}
.faq-item.is-open{box-shadow:var(--shadow-2);border-color:var(--brand-300)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;text-align:left;font-size:16px;font-weight:700;color:var(--ink-900);
}
.faq-arrow{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:#F1F6F3;
  display:flex;align-items:center;justify-content:center;transition:transform .2s ease,background .2s ease;
}
.faq-arrow svg{width:13px;height:13px;stroke:var(--brand-700)}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);background:rgba(0,196,140,.15)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a-inner{padding:0 0 20px;font-size:15px;color:var(--ink-600);line-height:1.8}

/* CTA 通栏 */
.cta-band{
  position:relative;overflow:hidden;border-radius:32px;
  background:var(--dark-grad);color:#fff;
  padding:40px 28px;
  display:flex;flex-direction:column;gap:22px;
}
@media(min-width:1024px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:52px 48px;gap:40px}
}
.cta-band::after{
  content:"";position:absolute;width:420px;height:420px;right:-140px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,196,140,.22),transparent 70%);
}
.cta-band h2{color:#fff;max-width:620px;position:relative;z-index:2}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.78);max-width:560px;position:relative;z-index:2}
.cta-band .cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px}

/* 页脚 */
.site-footer{background:var(--dark-grad);color:rgba(255,255,255,.78);margin-top:24px}
.footer-top{
  display:grid;gap:36px;padding:56px 0 40px;
}
@media(min-width:768px){.footer-top{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1280px){.footer-top{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px}}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-text{display:block;color:#fff;font-size:17px}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);transition:color .16s ease}
.footer-col a:hover{color:var(--brand-300)}
.footer-col p{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: article */
:root{
    --brand-500:#00C48C;
    --brand-700:#00795A;
    --brand-300:#6EE7C4;
    --accent-lime:#D8FF3E;
    --accent-violet:#6E5BFF;
    --ink-900:#0A1512;
    --ink-600:#4C5C57;
    --ink-400:#8A9A95;
    --bg:#F4F7F5;
    --surface:#FFFFFF;
    --line:#E3EBE7;
    --r-card:24px;
    --r-lg:18px;
    --r-md:14px;
    --r-pill:999px;
    --shadow-1:0 1px 2px rgba(10,21,18,.04), 0 8px 24px -12px rgba(10,21,18,.12);
    --shadow-2:0 2px 4px rgba(10,21,18,.05), 0 18px 40px -18px rgba(10,21,18,.20);
    --grad:linear-gradient(120deg,#00C48C 0%,#31D9B0 45%,#6E5BFF 100%);
    --grad-dark:linear-gradient(135deg,#071713 0%,#0C2B22 55%,#123A2C 100%);
    --shell:248px;
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; }
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink-600);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{ color:var(--ink-900); margin:0; font-weight:800; }
  p{ margin:0; }
  a{ color:inherit; }
  img{ display:block; max-width:100%; }
  button{ font-family:inherit; }
  a:focus-visible,button:focus-visible,input:focus-visible{ outline:2px solid var(--brand-500); outline-offset:2px; border-radius:8px; }
  ::selection{ background:rgba(0,196,140,.22); }
  .tnum{ font-variant-numeric:tabular-nums; }

  .container-x{ width:100%; max-width:1200px; margin:0 auto; padding:0 24px; }
  .pad-shell{ padding-left:var(--shell); }

  /* ============ 左侧导航 ============ */
  .app-side{
    position:fixed; top:0; left:0; bottom:0; width:var(--shell);
    background:var(--surface); border-right:1px solid var(--line);
    display:flex; flex-direction:column; padding:24px 16px 20px;
    z-index:60; overflow-y:auto; transition:transform .25s ease;
  }
  .brand-lockup{ display:flex; align-items:center; gap:10px; text-decoration:none; padding:0 6px; }
  .brand-mark{
    width:36px; height:36px; flex:none; border-radius:12px; background:var(--grad);
    display:grid; place-items:center; color:#04352A; font-weight:800; font-size:17px; letter-spacing:0;
  }
  .brand-text{ color:var(--ink-900); font-weight:800; font-size:16px; letter-spacing:.01em; }
  .side-nav{ display:flex; flex-direction:column; gap:4px; margin-top:22px; }
  .nav-item{
    position:relative; display:flex; align-items:center; gap:12px;
    height:44px; padding:0 14px; border-radius:var(--r-pill);
    font-size:15px; color:var(--ink-600); text-decoration:none;
    transition:background .12s ease, color .12s ease, transform .12s ease;
  }
  .nav-item svg{ width:20px; height:20px; flex:none; stroke:currentColor; fill:none; }
  .nav-item:hover{ background:#F1F6F3; color:var(--ink-900); transform:translateX(2px); }
  .nav-item.is-active{ background:rgba(0,196,140,.12); color:var(--brand-700); font-weight:700; }
  .nav-item.is-active::before{
    content:""; position:absolute; left:0; top:50%; transform:translateY(-50%);
    width:3px; height:20px; border-radius:2px; background:var(--grad);
  }
  .side-foot{ margin-top:auto; padding-top:24px; display:flex; flex-direction:column; gap:8px; }
  .side-mini{
    display:block; font-size:14px; color:var(--ink-600); text-decoration:none;
    padding:9px 14px; border-radius:var(--r-md); transition:.15s;
  }
  .side-mini:hover{ background:#F1F6F3; color:var(--brand-700); }
  .side-badge{
    margin-top:6px; font-size:12px; line-height:1.6; color:var(--brand-700);
    background:#EAF8F3; border:1px solid #D6EDE4; border-radius:var(--r-md);
    padding:10px 12px; display:block;
  }

  /* ============ 移动端顶栏与抽屉 ============ */
  .mobile-bar{
    display:none; position:fixed; top:0; left:0; right:0; height:56px; z-index:70;
    align-items:center; justify-content:space-between; padding:0 16px;
    background:rgba(255,255,255,.86); backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .burger{
    width:44px; height:44px; display:grid; place-items:center; gap:5px;
    border:1px solid var(--line); border-radius:12px; background:#fff; cursor:pointer; padding:11px 12px;
  }
  .burger span{ display:block; width:18px; height:2px; border-radius:2px; background:var(--ink-900); }
  .drawer-mask{
    position:fixed; inset:0; background:rgba(7,23,19,.45); z-index:55;
    opacity:0; visibility:hidden; transition:.2s ease;
  }
  .drawer-mask.is-open{ opacity:1; visibility:visible; }

  /* ============ 文章头部 ============ */
  .article-hero{ position:relative; overflow:hidden; background:var(--grad-dark); color:#fff; padding:34px 0 46px; }
  .article-hero .hero-photo{
    position:absolute; inset:0; background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover; background-position:center; opacity:.22;
  }
  .grid-veil{
    position:absolute; inset:0; z-index:1; opacity:.5; pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
    background-size:64px 64px;
  }
  .glow-veil{
    position:absolute; inset:0; z-index:1; pointer-events:none;
    background:
      radial-gradient(circle at 12% 20%, rgba(0,196,140,.20), transparent 44%),
      radial-gradient(circle at 86% 76%, rgba(110,91,255,.17), transparent 46%);
  }
  .article-hero .container-x{ position:relative; z-index:2; }

  .crumb{ display:flex; flex-wrap:wrap; align-items:center; gap:8px; list-style:none; margin:0; padding:0; font-size:13px; color:rgba(255,255,255,.6); }
  .crumb a{ color:rgba(255,255,255,.8); text-decoration:none; }
  .crumb a:hover{ color:var(--brand-300); }
  .crumb li[aria-current="page"]{ color:rgba(255,255,255,.5); }
  .crumb-sep{ color:rgba(255,255,255,.3); }

  .hero-body{ margin-top:26px; max-width:900px; }
  .pill-cat{
    display:inline-flex; align-items:center; gap:8px; padding:6px 15px; border-radius:var(--r-pill);
    font-size:13px; color:#B9F5DF; background:rgba(0,196,140,.16); border:1px solid rgba(110,231,196,.38);
  }
  .pill-cat .dot{ width:7px; height:7px; border-radius:50%; background:var(--grad); }
  .hero-body h1{
    font-size:clamp(26px,3.5vw,42px); line-height:1.25; letter-spacing:-.01em;
    color:#fff; margin:16px 0 18px;
  }
  .meta-row{ display:flex; flex-wrap:wrap; gap:18px; font-size:13px; color:rgba(255,255,255,.66); }
  .meta-row .sep{ color:rgba(255,255,255,.28); }

  /* ============ 正文布局 ============ */
  .article-wrap{
    display:grid; grid-template-columns:minmax(0,1fr) 300px; gap:48px;
    align-items:start; padding:48px 0 72px;
  }
  .article-card{
    background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card);
    box-shadow:var(--shadow-1); padding:40px 40px 48px;
  }
  .article-body{ max-width:760px; font-size:17px; line-height:1.85; color:var(--ink-600); }
  .article-body > *:first-child{ margin-top:0; }
  .article-body p{ margin:0 0 1.2em; }
  .article-body h2{
    position:relative; margin:40px 0 16px; padding-left:16px;
    font-size:28px; line-height:1.3; color:var(--ink-900);
  }
  .article-body h2::before{
    content:""; position:absolute; left:0; top:.28em; width:4px; height:1em;
    border-radius:2px; background:var(--grad);
  }
  .article-body h3{ margin:28px 0 12px; font-size:20px; line-height:1.5; color:var(--ink-900); }
  .article-body h4{ margin:22px 0 10px; font-size:17px; color:var(--ink-900); }
  .article-body blockquote{
    margin:24px 0; padding:16px 22px; background:#EAF8F3;
    border-left:3px solid var(--brand-500); border-radius:0 var(--r-md) var(--r-md) 0; color:var(--ink-600);
  }
  .article-body blockquote p:last-child{ margin-bottom:0; }
  .article-body ul,.article-body ol{ margin:0 0 1.2em; padding-left:1.4em; }
  .article-body ul{ list-style:none; }
  .article-body ul li{ position:relative; margin-bottom:.55em; }
  .article-body ul li::before{
    content:""; position:absolute; left:-1em; top:.78em;
    width:6px; height:6px; border-radius:50%; background:var(--brand-500);
  }
  .article-body ol li{ margin-bottom:.55em; }
  .article-body ol li::marker{ color:var(--brand-700); font-weight:700; }
  .article-body img{ width:auto; max-width:100%; height:auto; border-radius:18px; margin:26px auto; }
  .article-body figure{ margin:26px 0; }
  .article-body figcaption{ margin-top:10px; text-align:center; font-size:13px; color:var(--ink-400); }
  .article-body a{ color:var(--brand-700); text-decoration:underline; text-underline-offset:3px; }
  .article-body a:hover{ color:var(--brand-500); }
  .article-body table{ width:100%; border-collapse:collapse; margin:0 0 1.2em; font-size:15px; }
  .article-body th,.article-body td{ border:1px solid var(--line); padding:10px 14px; text-align:left; }
  .article-body th{ background:#F1F7F4; color:var(--ink-900); font-weight:700; }
  .article-body strong{ color:var(--ink-900); font-weight:700; }
  .article-body hr{ border:0; border-top:1px solid var(--line); margin:36px 0; }

  /* 标签 */
  .tag-list{
    display:flex; flex-wrap:wrap; align-items:center; gap:10px;
    margin-top:32px; padding-top:26px; border-top:1px solid var(--line);
  }
  .tag-label{ font-size:13px; color:var(--ink-400); margin-right:4px; }
  .tag{
    display:inline-flex; align-items:center; padding:7px 15px; border-radius:var(--r-pill);
    background:#EFF7F3; border:1px solid #DCEBE4; color:var(--brand-700);
    font-size:13px; text-decoration:none; transition:.15s ease;
  }
  .tag:hover{ background:#E1F4EC; color:var(--brand-700); }

  /* 上一篇 / 下一篇 */
  .pn-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:24px; }
  .pn-card{
    display:block; padding:20px 22px; background:var(--surface);
    border:1px solid var(--line); border-radius:var(--r-lg);
    box-shadow:var(--shadow-1); text-decoration:none; transition:.18s ease;
  }
  .pn-card:hover{ box-shadow:var(--shadow-2); transform:translateY(-3px); border-color:#D3E7DE; }
  .pn-kicker{ font-size:12px; color:var(--ink-400); letter-spacing:.06em; }
  .pn-title{ margin-top:8px; font-size:16px; font-weight:700; color:var(--ink-900); line-height:1.5; }
  .pn-card.is-next{ text-align:right; }

  .back-row{ margin-top:24px; }
  .btn-ghost{
    display:inline-flex; align-items:center; gap:8px; height:46px; padding:0 24px;
    border-radius:var(--r-pill); border:1px solid var(--line); background:var(--surface);
    color:var(--ink-900); font-size:15px; font-weight:600; text-decoration:none;
    transition:.16s ease; box-shadow:var(--shadow-1);
  }
  .btn-ghost:hover{ border-color:var(--brand-300); color:var(--brand-700); transform:translateY(-2px); box-shadow:var(--shadow-2); }

  /* ============ 侧栏 ============ */
  .article-aside{ position:sticky; top:28px; }
  .aside-card{
    background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card);
    box-shadow:var(--shadow-1); padding:24px 22px 26px;
  }
  .aside-head{ display:flex; align-items:center; gap:8px; margin-bottom:6px; }
  .aside-head h2{ font-size:17px; }
  .aside-head .bar{ width:16px; height:4px; border-radius:2px; background:var(--grad); }
  .rank-list{ list-style:none; margin:0; padding:0; }
  .rank-item{ display:flex; gap:12px; align-items:flex-start; padding:13px 0; border-bottom:1px dashed var(--line); }
  .rank-item:last-child{ border-bottom:0; padding-bottom:0; }
  .rank-num{
    width:22px; height:22px; flex:none; margin-top:4px; border-radius:8px;
    display:grid; place-items:center; font-size:12px; font-weight:800;
    background:var(--accent-lime); color:#04352A; font-variant-numeric:tabular-nums;
  }
  .rank-item:nth-child(n+4) .rank-num{ background:#E7EFEA; color:var(--ink-600); }
  .rank-link{ font-size:14px; line-height:1.65; color:var(--ink-900); text-decoration:none; }
  .rank-link:hover{ color:var(--brand-700); }

  /* ============ 板块通用 ============ */
  .section{ padding:72px 0; }
  .section-head{
    display:flex; align-items:flex-end; justify-content:space-between;
    gap:20px; margin-bottom:32px;
  }
  .section-head h2{ font-size:clamp(22px,2.4vw,30px); line-height:1.3; }
  .section-head .sub{ margin-top:8px; font-size:14px; color:var(--ink-400); }
  .link-more{
    font-size:14px; font-weight:600; color:var(--brand-700); text-decoration:none;
    display:inline-flex; align-items:center; gap:6px; white-space:nowrap; transition:.15s;
  }
  .link-more:hover{ color:var(--brand-500); gap:10px; }

  /* 推荐卡片 */
  .rel-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
  .post-card{
    display:flex; flex-direction:column; overflow:hidden; text-decoration:none;
    background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card);
    box-shadow:var(--shadow-1); transition:.2s ease;
  }
  .post-card:hover{ box-shadow:var(--shadow-2); transform:translateY(-4px); border-color:#D3E7DE; }
  .post-thumb{ position:relative; aspect-ratio:16/9; overflow:hidden; background:#E7EFEA; }
  .post-thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .4s ease; }
  .post-card:hover .post-thumb img{ transform:scale(1.04); }
  .tag-float{
    position:absolute; left:14px; top:14px; padding:5px 12px; border-radius:var(--r-pill);
    font-size:12px; background:rgba(255,255,255,.92); color:var(--brand-700); font-weight:600;
  }
  .post-body{ padding:18px 20px 22px; display:flex; flex-direction:column; flex:1; }
  .post-title{
    font-size:17px; font-weight:700; line-height:1.5; color:var(--ink-900); margin:0 0 10px;
    display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
  }
  .post-excerpt{
    font-size:14px; line-height:1.75; color:var(--ink-600); margin:0 0 16px;
    display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
  }
  .post-foot{
    margin-top:auto; display:flex; align-items:center; justify-content:space-between;
    font-size:13px; color:var(--ink-400); font-variant-numeric:tabular-nums;
  }
  .post-foot .arrow{ transition:transform .2s ease; color:var(--brand-700); font-weight:700; }
  .post-card:hover .post-foot .arrow{ transform:translateX(4px); }

  /* 空态 */
  .empty-box{
    background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card);
    box-shadow:var(--shadow-1); min-height:280px; padding:52px 24px;
    display:flex; flex-direction:column; align-items:center; justify-content:center;
    text-align:center; gap:14px;
  }
  .empty-icon{
    width:64px; height:64px; border-radius:50%; display:grid; place-items:center;
    background:#EAF8F3; border:1px solid #D6EDE4; color:var(--brand-700);
  }
  .empty-title{ font-size:19px; font-weight:800; color:var(--ink-900); }
  .empty-sub{ font-size:14.5px; color:var(--ink-600); max-width:420px; }

  /* ============ CTA 通栏 ============ */
  .cta-band{
    position:relative; overflow:hidden; border-radius:32px; color:#fff;
    background:var(--grad-dark); padding:42px 44px;
    display:flex; align-items:center; justify-content:space-between; gap:28px; flex-wrap:wrap;
    box-shadow:var(--shadow-2);
  }
  .cta-band::after{
    content:""; position:absolute; inset:0; pointer-events:none;
    background:
      radial-gradient(circle at 86% 18%, rgba(0,196,140,.26), transparent 46%),
      radial-gradient(circle at 6% 88%, rgba(110,91,255,.20), transparent 44%);
  }
  .cta-band > *{ position:relative; z-index:2; }
  .cta-band h2{ color:#fff; font-size:clamp(21px,2.3vw,29px); line-height:1.4; max-width:620px; }
  .cta-band p{ margin-top:12px; font-size:15px; color:rgba(255,255,255,.72); max-width:560px; }
  .btn-primary{
    display:inline-flex; align-items:center; gap:8px; height:50px; padding:0 28px;
    border-radius:var(--r-pill); background:var(--grad); color:#04352A;
    font-size:15px; font-weight:800; text-decoration:none; white-space:nowrap;
    box-shadow:0 12px 26px -12px rgba(0,196,140,.75);
    transition:transform .16s ease, filter .16s ease, box-shadow .16s ease;
  }
  .btn-primary:hover{ transform:translateY(-2px); filter:brightness(1.05); }
  .btn-primary:active{ transform:translateY(1px); }

  /* ============ 页脚 ============ */
  .site-footer{ background:#071713; color:rgba(255,255,255,.7); padding:56px 0 28px; }
  .footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:36px; }
  .footer-brand{ display:flex; align-items:center; gap:10px; margin-bottom:16px; }
  .footer-brand .brand-mark{ width:34px; height:34px; border-radius:11px; font-size:16px; }
  .footer-brand .brand-text{ color:#fff; font-size:17px; }
  .footer-about{ font-size:14px; line-height:1.85; color:rgba(255,255,255,.6); max-width:380px; }
  .footer-col h3{ color:#fff; font-size:14px; margin:0 0 14px; font-weight:700; }
  .footer-col ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; }
  .footer-col a{ color:rgba(255,255,255,.68); text-decoration:none; font-size:14px; transition:color .15s ease; }
  .footer-col a:hover{ color:var(--brand-300); }
  .footer-col p{ font-size:13.5px; line-height:1.85; color:rgba(255,255,255,.58); }
  .footer-bottom{
    margin-top:40px; padding-top:20px; border-top:1px solid rgba(255,255,255,.1);
    display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
    font-size:13px; color:rgba(255,255,255,.48);
  }

  /* ============ 响应式 ============ */
  @media (min-width:1024px) and (max-width:1279px){
    :root{ --shell:88px; }
    .app-side{ padding:22px 12px; align-items:center; }
    .side-head .brand-text{ display:none; }
    .side-nav{ width:100%; }
    .nav-item{ justify-content:center; padding:0; }
    .nav-item span{ display:none; }
    .nav-item.is-active::before{ left:-12px; }
    .side-foot{ display:none; }
  }

  @media (max-width:1279px){
    .article-wrap{ grid-template-columns:minmax(0,1fr); gap:32px; }
    .article-aside{ position:static; }
  }

  @media (max-width:1023px){
    body{ padding-top:56px; }
    .pad-shell{ padding-left:0; }
    .mobile-bar{ display:flex; }
    .app-side{ top:56px; transform:translateX(-100%); width:280px; padding:20px 16px; }
    .app-side.is-open{ transform:translateX(0); box-shadow:0 20px 60px -20px rgba(7,23,19,.5); }
    .side-foot{ display:flex; }
    .footer-top{ grid-template-columns:1fr 1fr; }
  }

  @media (max-width:767px){
    .container-x{ padding:0 18px; }
    .article-hero{ padding:26px 0 36px; }
    .article-card{ padding:26px 20px 32px; border-radius:var(--r-lg); }
    .article-body{ font-size:16.5px; }
    .article-body h2{ font-size:23px; margin-top:32px; }
    .rel-grid{ grid-template-columns:1fr; }
    .section{ padding:48px 0; }
    .cta-band{ border-radius:24px; padding:30px 24px; }
    .cta-band .btn-primary{ width:100%; justify-content:center; }
  }

  @media (max-width:639px){
    .pn-grid{ grid-template-columns:1fr; }
    .pn-card.is-next{ text-align:left; }
    .footer-top{ grid-template-columns:1fr; }
    .section-head{ flex-direction:column; align-items:flex-start; }
  }

/* roulang page: category1 */
:root{
    --brand-500:#00C48C;
    --brand-700:#00795A;
    --brand-300:#6EE7C4;
    --accent-lime:#D8FF3E;
    --accent-violet:#6E5BFF;
    --ink-900:#0A1512;
    --ink-600:#4C5C57;
    --ink-400:#8A9A95;
    --bg:#F4F7F5;
    --surface:#FFFFFF;
    --line:#E3EBE7;
    --grad-brand:linear-gradient(120deg,#00C48C 0%,#31D9B0 45%,#6E5BFF 100%);
    --grad-dark:linear-gradient(135deg,#071713 0%,#0C2B22 55%,#123A2C 100%);
    --r-card:24px;
    --r-lg:18px;
    --r-md:14px;
    --r-pill:999px;
    --shadow-1:0 1px 2px rgba(10,21,18,.04),0 8px 24px -12px rgba(10,21,18,.12);
    --shadow-2:0 2px 4px rgba(10,21,18,.05),0 18px 40px -18px rgba(10,21,18,.20);
    --shell:248px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink-900);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  ul,ol{margin:0;padding:0;list-style:none;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
  p{margin:0;}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}

  /* ---------- App Shell ---------- */
  .sidebar{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--shell);
    background:var(--surface);
    border-right:1px solid var(--line);
    padding:24px 16px 20px;
    display:flex;
    flex-direction:column;
    z-index:70;
  }
  .sidebar-brand{
    display:flex;
    align-items:center;
    gap:10px;
    padding:4px 8px 22px;
  }
  .brand-mark{
    width:36px;height:36px;
    flex:0 0 36px;
    border-radius:12px;
    background:var(--grad-brand);
    color:#04150F;
    font-weight:800;
    font-size:17px;
    display:grid;
    place-items:center;
    box-shadow:0 8px 18px -10px rgba(0,196,140,.9);
  }
  .sidebar .brand-text{
    font-size:16px;
    font-weight:800;
    letter-spacing:-.01em;
    color:var(--ink-900);
    white-space:nowrap;
  }
  .side-nav{display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    position:relative;
    display:flex;
    align-items:center;
    gap:12px;
    height:44px;
    padding:0 14px;
    border-radius:var(--r-pill);
    color:var(--ink-600);
    font-size:15px;
    font-weight:600;
    transition:background .12s ease,color .12s ease,transform .12s ease;
  }
  .nav-item svg{
    width:20px;height:20px;
    flex:0 0 20px;
    stroke:currentColor;
    fill:none;
    stroke-width:1.8;
    stroke-linecap:round;
    stroke-linejoin:round;
  }
  .nav-item:hover{background:#F1F6F3;color:var(--ink-900);transform:translateX(2px);}
  .nav-item.is-active{background:rgba(0,196,140,.12);color:var(--brand-700);}
  .nav-item.is-active::before{
    content:"";
    position:absolute;
    left:0;
    top:10px;bottom:10px;
    width:3px;
    border-radius:3px;
    background:var(--grad-brand);
  }
  .side-foot{margin-top:auto;padding-top:16px;}
  .side-badge{
    display:flex;
    align-items:center;
    gap:8px;
    padding:10px 14px;
    border:1px solid var(--line);
    border-radius:var(--r-md);
    background:#F8FBF9;
    color:var(--ink-600);
    font-size:12.5px;
    line-height:1.5;
  }
  .side-badge .dot{
    width:8px;height:8px;flex:0 0 8px;
    border-radius:50%;
    background:var(--grad-brand);
  }

  /* ---------- Mobile top bar & drawer ---------- */
  .topbar{
    position:fixed;
    top:0;left:0;right:0;
    height:56px;
    display:none;
    align-items:center;
    justify-content:space-between;
    padding:0 18px;
    background:rgba(255,255,255,.86);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    z-index:80;
  }
  .topbar-brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:15px;}
  .menu-btn{
    width:44px;height:44px;
    display:grid;place-items:center;
    border-radius:12px;
    border:1px solid var(--line);
    background:#fff;
  }
  .menu-btn svg{width:20px;height:20px;stroke:var(--ink-900);stroke-width:1.9;fill:none;stroke-linecap:round;}
  .drawer{
    position:fixed;
    top:0;left:0;bottom:0;
    width:280px;
    background:#fff;
    transform:translateX(-102%);
    transition:transform .24s ease;
    z-index:100;
    padding:20px 18px;
    display:flex;
    flex-direction:column;
    border-right:1px solid var(--line);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-mask{
    position:fixed;inset:0;
    background:rgba(7,23,19,.45);
    opacity:0;
    visibility:hidden;
    transition:opacity .24s ease,visibility .24s ease;
    z-index:90;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
  .drawer-nav .nav-item{height:48px;font-size:16px;border-radius:14px;}
  .drawer-close{
    position:absolute;top:14px;right:12px;
    width:40px;height:40px;border-radius:12px;
    display:grid;place-items:center;
    border:1px solid var(--line);
  }
  .drawer-close svg{width:18px;height:18px;stroke:var(--ink-900);stroke-width:2;fill:none;stroke-linecap:round;}

  /* ---------- Layout ---------- */
  .main{padding-left:var(--shell);min-height:100vh;}
  .pad-shell{padding-left:var(--shell);}
  .container-x{max-width:1200px;margin:0 auto;padding:0 40px;}

  /* ---------- Breadcrumb ---------- */
  .breadcrumb{padding:28px 0 4px;}
  .breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;font-size:13px;color:var(--ink-400);}
  .breadcrumb li{display:flex;align-items:center;}
  .breadcrumb li:not(:last-child)::after{content:"/";margin:0 8px;color:#C6D5CF;}
  .breadcrumb a{color:var(--ink-600);transition:color .15s ease;}
  .breadcrumb a:hover{color:var(--brand-700);}
  .breadcrumb [aria-current="page"]{color:var(--ink-400);}

  /* ---------- Hero ---------- */
  .hero-split{
    display:grid;
    grid-template-columns:1.05fr .95fr;
    gap:56px;
    align-items:center;
    padding:40px 0 56px;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:700;
    color:var(--brand-700);
    background:rgba(0,196,140,.10);
    border:1px solid rgba(0,196,140,.20);
    border-radius:var(--r-pill);
    padding:6px 14px;
  }
  .hero-title{
    margin:18px 0 0;
    font-size:42px;
    line-height:1.25;
    font-weight:800;
    letter-spacing:-.01em;
  }
  .hero-sub{
    margin-top:18px;
    font-size:16.5px;
    line-height:1.85;
    color:var(--ink-600);
    max-width:38em;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:48px;
    padding:0 26px;
    border-radius:var(--r-pill);
    font-size:15.5px;
    font-weight:700;
    transition:transform .16s ease,box-shadow .16s ease,background .16s ease,filter .16s ease;
  }
  .btn-primary{
    background:var(--grad-brand);
    color:#04150F;
    box-shadow:0 12px 26px -16px rgba(0,196,140,.95);
  }
  .btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    background:rgba(0,196,140,.10);
    color:var(--brand-700);
  }
  .btn-ghost:hover{background:rgba(0,196,140,.18);transform:translateY(-2px);}
  .btn-light{
    background:#FFFFFF;
    color:#071713;
    box-shadow:0 12px 26px -18px rgba(0,0,0,.6);
  }
  .btn-light:hover{transform:translateY(-2px);filter:brightness(1.04);}

  .hero-media{display:flex;flex-direction:column;gap:18px;}
  .hero-shot{
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--shadow-2);
    border:1px solid var(--line);
    background:#fff;
  }
  .hero-shot img{
    width:100%;
    height:340px;
    object-fit:cover;
  }
  .stat-row{display:flex;flex-wrap:wrap;gap:12px;}
  .stat{
    flex:1 1 120px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    padding:12px 16px;
    box-shadow:var(--shadow-1);
  }
  .stat-num{
    display:block;
    font-size:22px;
    font-weight:800;
    color:var(--brand-700);
    font-variant-numeric:tabular-nums;
    line-height:1.3;
  }
  .stat-label{font-size:13px;color:var(--ink-400);}

  /* ---------- Blocks ---------- */
  .block{padding:44px 0;}
  .section-head{margin-bottom:30px;max-width:720px;}
  .section-title{
    position:relative;
    padding-left:16px;
    font-size:30px;
    line-height:1.3;
    font-weight:800;
    letter-spacing:-.01em;
  }
  .section-title::before{
    content:"";
    position:absolute;
    left:0;
    top:.22em;bottom:.22em;
    width:4px;
    border-radius:4px;
    background:var(--grad-brand);
  }
  .section-desc{margin-top:12px;color:var(--ink-600);font-size:15.5px;}
  .lede{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:26px 30px;
    box-shadow:var(--shadow-1);
    color:var(--ink-600);
    font-size:16px;
    line-height:1.9;
  }

  /* ---------- Numbered list ---------- */
  .num-list{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:0 48px;
    border-top:1px solid var(--line);
  }
  .num-item{
    display:grid;
    grid-template-columns:56px 1fr 22px;
    align-items:center;
    gap:18px;
    padding:22px 0;
    border-bottom:1px solid var(--line);
    transition:background .15s ease;
  }
  .num-item:hover{background:#EFF6F2;}
  .num-val{
    font-size:26px;
    font-weight:800;
    font-variant-numeric:tabular-nums;
    background:var(--grad-brand);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
    line-height:1;
  }
  .num-title{font-size:16.5px;font-weight:700;}
  .num-text{margin-top:4px;font-size:14.5px;line-height:1.75;color:var(--ink-600);}
  .num-item svg{width:20px;height:20px;stroke:var(--ink-400);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease,stroke .18s ease;}
  .num-item:hover svg{transform:translateX(3px);stroke:var(--brand-700);}

  /* ---------- Split block ---------- */
  .split-block{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:48px;
    align-items:center;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:40px;
    box-shadow:var(--shadow-1);
  }
  .split-block .media{
    border-radius:var(--r-lg);
    overflow:hidden;
    box-shadow:var(--shadow-1);
  }
  .split-block .media img{width:100%;height:320px;object-fit:cover;}
  .check-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
  .check-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-600);line-height:1.75;}
  .check-list li::before{
    content:"";
    width:8px;height:8px;flex:0 0 8px;
    margin-top:11px;
    border-radius:50%;
    background:var(--brand-500);
  }
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .tag{
    display:inline-flex;
    align-items:center;
    padding:6px 14px;
    border-radius:var(--r-pill);
    background:#F1F6F3;
    border:1px solid var(--line);
    color:var(--ink-600);
    font-size:13px;
    font-weight:600;
  }
  .tag--lime{background:rgba(216,255,62,.35);border-color:rgba(216,255,62,.75);color:#3C4A0E;}

  /* ---------- Card grid ---------- */
  .card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .card{
    display:flex;
    flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--shadow-1);
    transition:transform .18s ease,box-shadow .18s ease;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
  .card-media{aspect-ratio:16/9;overflow:hidden;background:#EDF3F0;}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
  .card:hover .card-media img{transform:scale(1.04);}
  .card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .card-title{font-size:17.5px;font-weight:700;line-height:1.5;}
  .card-text{font-size:14.5px;line-height:1.75;color:var(--ink-600);flex:1;}
  .card-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:700;
    color:var(--brand-700);
  }
  .card-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease;}
  .card:hover .card-link svg{transform:translateX(3px);}

  /* ---------- CTA bar ---------- */
  .cta-bar{
    margin:52px 0;
    border-radius:var(--r-lg);
    padding:32px 40px;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    color:#FFFFFF;
    background-image:linear-gradient(135deg,rgba(7,23,19,.94) 0%,rgba(12,43,34,.92) 55%,rgba(18,58,44,.9) 100%),url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
  }
  .cta-bar h2{font-size:25px;font-weight:800;line-height:1.4;letter-spacing:-.01em;color:#fff;}
  .cta-bar p{margin-top:8px;font-size:14.5px;color:#B9D3CA;max-width:52ch;}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-1);
    overflow:hidden;
    transition:box-shadow .18s ease;
  }
  .faq-item:hover{box-shadow:var(--shadow-2);}
  .faq-h{margin:0;font-size:inherit;}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 24px;
    text-align:left;
    font-size:17px;
    font-weight:700;
    line-height:1.6;
  }
  .faq-icon{
    width:20px;height:20px;flex:0 0 20px;
    stroke:var(--brand-700);
    fill:none;
    stroke-width:2;
    stroke-linecap:round;
    stroke-linejoin:round;
    transition:transform .2s ease;
  }
  .faq-item.is-open .faq-icon{transform:rotate(180deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
  .faq-a-inner{padding:0 24px 20px;color:var(--ink-600);font-size:15.5px;line-height:1.85;}

  /* ---------- Footer ---------- */
  .site-footer{
    background:var(--grad-dark);
    color:#C9DDD6;
    padding:64px 0 26px;
    margin-top:24px;
  }
  .footer-top{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.2fr;
    gap:40px;
  }
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-text{color:#fff;font-weight:800;font-size:16px;}
  .footer-about{font-size:14.5px;line-height:1.85;color:#9FBBB2;max-width:38ch;}
  .footer-col h3{margin:0 0 16px;font-size:15px;font-weight:700;color:#fff;}
  .footer-col li{margin-bottom:10px;font-size:14.5px;}
  .footer-col a{color:#A9C4BB;transition:color .15s ease;}
  .footer-col a:hover{color:var(--brand-300);}
  .footer-col p{font-size:14px;line-height:1.8;color:#9FBBB2;}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:12px;
    margin-top:44px;
    padding-top:20px;
    border-top:1px solid rgba(255,255,255,.12);
    font-size:13px;
    color:#8FA9A0;
  }

  /* ---------- Responsive ---------- */
  @media (max-width:1279px) and (min-width:1024px){
    :root{--shell:88px;}
    .sidebar{padding:24px 12px;align-items:center;}
    .sidebar .brand-text{display:none;}
    .sidebar-brand{padding:4px 0 20px;justify-content:center;}
    .nav-item{width:56px;height:48px;justify-content:center;padding:0;}
    .nav-item span{display:none;}
    .nav-item::after{
      content:attr(data-label);
      position:absolute;
      left:calc(100% + 12px);
      white-space:nowrap;
      background:var(--ink-900);
      color:#fff;
      padding:6px 10px;
      border-radius:10px;
      font-size:13px;
      opacity:0;
      pointer-events:none;
      transition:opacity .15s ease;
      z-index:20;
    }
    .nav-item:hover::after{opacity:1;}
    .nav-item:hover{transform:none;}
    .side-badge{display:none;}
  }

  @media (max-width:1023px){
    .sidebar{display:none;}
    .topbar{display:flex;}
    .main{padding-left:0;padding-top:56px;}
    .pad-shell{padding-left:0;}
    .container-x{padding:0 24px;}
    .hero-split{grid-template-columns:1fr;gap:32px;padding:28px 0 40px;}
    .hero-title{font-size:34px;}
    .hero-shot img{height:280px;}
    .num-list{grid-template-columns:1fr;gap:0;}
    .split-block{grid-template-columns:1fr;gap:28px;padding:28px;}
    .split-block .media img{height:260px;}
    .card-grid{grid-template-columns:repeat(2,1fr);}
    .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  }

  @media (max-width:767px){
    .block{padding:34px 0;}
    .section-title{font-size:25px;}
    .hero-title{font-size:30px;}
    .lede{padding:22px;}
    .cta-bar{padding:26px 24px;border-radius:var(--r-card);}
    .cta-bar h2{font-size:21px;}
    .faq-q{font-size:16px;padding:16px 18px;}
    .faq-a-inner{padding:0 18px 18px;}
    .card-grid{grid-template-columns:1fr;}
    .footer-top{grid-template-columns:1fr;}
  }

  @media (max-width:520px){
    .container-x{padding:0 18px;}
    .hero-actions .btn{width:100%;}
    .num-item{grid-template-columns:44px 1fr 20px;gap:14px;}
    .num-val{font-size:22px;}
    .stat{flex:1 1 100%;}
  }

/* roulang page: category2 */
:root{
  --brand-500:#00C48C;
  --brand-700:#00795A;
  --brand-300:#6EE7C4;
  --accent-lime:#D8FF3E;
  --accent-violet:#6E5BFF;
  --ink-900:#0A1512;
  --ink-600:#4C5C57;
  --ink-400:#8A9A95;
  --bg:#F4F7F5;
  --surface:#FFFFFF;
  --line:#E3EBE7;
  --r-card:24px;
  --r-lg:18px;
  --r-md:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(10,21,18,.04),0 8px 24px -12px rgba(10,21,18,.12);
  --shadow-2:0 2px 4px rgba(10,21,18,.05),0 18px 40px -18px rgba(10,21,18,.20);
  --grad-brand:linear-gradient(120deg,#00C48C 0%,#31D9B0 45%,#6E5BFF 100%);
  --grad-dark:linear-gradient(135deg,#071713 0%,#0C2B22 55%,#123A2C 100%);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-600);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.8;font-feature-settings:"tnum";
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:inherit}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800;letter-spacing:-.01em;line-height:1.3}
h1{font-size:40px;line-height:1.25}
h2{font-size:30px}
h3{font-size:20px;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
::selection{background:var(--accent-lime);color:var(--ink-900)}

/* ---------- 容器与主内容偏移 ---------- */
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.pad-shell{padding-left:248px;transition:padding-left .2s ease}
@media (max-width:1279px){.pad-shell{padding-left:88px}}
@media (max-width:1023px){.pad-shell{padding-left:0;padding-top:56px}}

/* ---------- 侧栏 App Shell ---------- */
.app-sidebar{
  position:fixed;left:0;top:0;bottom:0;width:248px;z-index:60;
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:22px 16px 18px;gap:10px;
  transition:width .2s ease,transform .24s ease;
}
.side-logo{display:flex;align-items:center;gap:10px;padding:6px 8px 18px;border-bottom:1px solid var(--line);margin-bottom:10px}
.brand-mark{
  width:38px;height:38px;flex:none;border-radius:12px;background:var(--grad-brand);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:800;letter-spacing:0;
}
.brand-text{font-size:16px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em}
.side-nav{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:var(--r-pill);
  color:var(--ink-600);font-size:14.5px;font-weight:600;
  transition:background .12s ease,color .12s ease,transform .12s ease;
}
.nav-item svg{width:20px;height:20px;flex:none;stroke:currentColor}
.nav-item:hover{background:#F1F6F3;color:var(--ink-900);transform:translateX(2px)}
.nav-item.is-active{background:rgba(0,196,140,.12);color:var(--brand-700)}
.nav-item.is-active::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:24px;border-radius:0 3px 3px 0;background:var(--grad-brand);
}
.side-sub{display:flex;flex-direction:column;gap:2px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.sub-link{font-size:13.5px;color:var(--ink-400);padding:8px 12px;border-radius:10px;transition:color .12s ease,background .12s ease}
.sub-link:hover{color:var(--brand-700);background:#F1F6F3}
.side-badge{
  margin-top:auto;display:flex;align-items:center;gap:8px;
  background:#F1F6F3;border:1px solid var(--line);border-radius:var(--r-md);
  padding:10px 12px;font-size:12.5px;color:var(--ink-400);line-height:1.5;
}
.side-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad-brand);flex:none}

@media (min-width:1024px) and (max-width:1279px){
  .app-sidebar{width:88px;padding:22px 12px 18px;align-items:center}
  .side-logo{padding:6px 0 18px;justify-content:center}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:0;width:46px}
  .nav-item span{
    display:block;position:absolute;left:calc(100% + 14px);top:50%;transform:translateY(-50%);
    background:var(--ink-900);color:#fff;font-size:13px;font-weight:600;line-height:1;
    padding:8px 10px;border-radius:10px;white-space:nowrap;opacity:0;pointer-events:none;
    transition:opacity .15s ease;z-index:70;
  }
  .nav-item:hover span{opacity:1}
  .side-sub,.side-badge{display:none}
}
@media (max-width:1023px){
  .app-sidebar{
    width:280px;z-index:80;transform:translateX(-100%);
    box-shadow:var(--shadow-2);padding:24px 20px;
  }
  .nav-item{height:48px;font-size:16px}
  .nav-item.is-active::before{left:-20px}
  body.drawer-open .app-sidebar{transform:translateX(0)}
}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.topbar .brand-text{font-size:15px}
.burger{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.burger i{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,23,19,.45);opacity:0;pointer-events:none;
  transition:opacity .2s ease;z-index:75;
}
.drawer-close{
  position:absolute;right:16px;top:18px;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink-600);cursor:pointer;font-size:16px;line-height:1;
}
@media (max-width:1023px){
  .topbar{display:flex}
  .drawer-close{display:block}
}
.drawer-close{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-pill);border:0;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,filter .16s ease,background .16s ease,color .16s ease;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--ink-900);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand-300);color:var(--brand-700);transform:translateY(-2px)}
.btn-dark{background:#fff;color:var(--ink-900)}
.btn-dark:hover{transform:translateY(-2px);filter:brightness(1.03)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:13px;color:var(--ink-400)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--ink-400)}
.breadcrumb a{color:var(--ink-400);transition:color .12s ease}
.breadcrumb a:hover{color:var(--brand-300)}
.breadcrumb [aria-current="page"]{color:var(--ink-400)}
.cat-hero .breadcrumb,.cat-hero .breadcrumb a{color:rgba(255,255,255,.68)}
.cat-hero .breadcrumb a:hover{color:#fff}

/* ---------- Hero 通栏大图 ---------- */
.cat-hero{position:relative;background:var(--grad-dark);color:#fff;overflow:hidden;padding:52px 0 68px}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;opacity:.30;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(520px 320px at 82% 18%,rgba(0,196,140,.22),transparent 70%),
    radial-gradient(460px 300px at 12% 92%,rgba(110,91,255,.16),transparent 70%);
  pointer-events:none;
}
.cat-hero-inner{position:relative;z-index:2}
.cat-hero h1{color:#fff;max-width:20ch;margin-top:20px}
.cat-hero .lede{color:rgba(255,255,255,.82);font-size:17px;max-width:56ch;margin-top:18px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.20);
  color:#fff;font-size:13px;font-weight:600;padding:7px 14px;border-radius:var(--r-pill);
}
.hero-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--grad-brand)}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:28px}
.link-arrow{color:var(--brand-300);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px;transition:gap .16s ease}
.link-arrow:hover{gap:11px}
.hero-badges{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:40px}
.hero-badge{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-lg);padding:16px 18px;
}
.hero-badge .k{font-size:12.5px;color:rgba(255,255,255,.60);letter-spacing:.04em}
.hero-badge .v{color:#fff;font-weight:800;font-size:15px;margin-top:6px;line-height:1.55}
@media (max-width:900px){.hero-badges{grid-template-columns:1fr}}
@media (max-width:640px){
  h1{font-size:29px}
  h2{font-size:23px}
  .cat-hero{padding:36px 0 46px}
  .cat-hero .lede{font-size:15.5px}
}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0}
.section-sm{padding:48px 0}
@media (max-width:767px){.section{padding:46px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;color:var(--brand-700);
  background:rgba(0,196,140,.10);padding:5px 12px;border-radius:var(--r-pill);margin-bottom:12px;
}
.section-head p{max-width:62ch;margin-top:10px;font-size:15.5px}
.h2-line{position:relative;padding-left:16px}
.h2-line::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--grad-brand);
}
.surface{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card)}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media (max-width:1023px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr}}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease;
  display:flex;flex-direction:column;
}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9F1ED}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.card-tag{
  position:absolute;left:14px;top:14px;z-index:2;
  background:rgba(7,23,19,.72);color:#fff;font-size:12px;font-weight:600;
  padding:5px 11px;border-radius:var(--r-pill);backdrop-filter:blur(4px);
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px}
.card-body p{font-size:14.5px;line-height:1.75}
.card-foot{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:700;color:var(--brand-700)}
.card-foot .arw{transition:transform .16s ease}
.card:hover .card-foot .arw{transform:translateX(4px)}

/* ---------- 时间线双列 ---------- */
.timeline-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media (max-width:767px){.timeline-grid{grid-template-columns:1fr}}
.tl-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 26px 24px 30px;box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.tl-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.tl-card::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:4px;
  border-radius:4px;background:var(--grad-brand);
}
.tl-step{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;
  color:var(--brand-700);letter-spacing:.02em;
}
.tl-step b{
  background:var(--accent-lime);color:var(--ink-900);border-radius:8px;
  padding:2px 8px;font-size:12px;font-weight:800;
}
.tl-card h3{margin-top:12px;font-size:18px}
.tl-card p{margin-top:8px;font-size:14.5px;line-height:1.78}
.tl-points{margin-top:14px;display:flex;flex-direction:column;gap:6px}
.tl-points li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-600)}
.tl-points li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand-500);
}

/* ---------- 通栏大图叙事 ---------- */
.feature-band{position:relative;border-radius:var(--r-card);overflow:hidden;background:var(--grad-dark)}
.feature-band img{width:100%;height:100%;object-fit:cover;opacity:.36;border-radius:0}
.feature-band .fb-inner{
  position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;
  padding:48px;gap:14px;color:#fff;
}
.feature-band h2{color:#fff;max-width:22ch}
.feature-band p{color:rgba(255,255,255,.82);max-width:58ch;font-size:15.5px}
.feature-band .fb-metrics{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.fb-chip{
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.10);
  color:#fff;font-size:13px;font-weight:600;padding:7px 14px;border-radius:var(--r-pill);
}
.feature-band-wrap{aspect-ratio:21/9;min-height:320px}
@media (max-width:767px){
  .feature-band-wrap{aspect-ratio:auto;min-height:420px}
  .feature-band .fb-inner{padding:26px}
}

/* ---------- 深色窄幅 CTA 条 ---------- */
.cta-strip{
  background:var(--grad-dark);border-radius:var(--r-card);color:#fff;
  padding:28px 32px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  position:relative;overflow:hidden;
}
.cta-strip::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,196,140,.28),transparent 68%);
}
.cta-strip h2{color:#fff;font-size:22px;max-width:30ch;position:relative;z-index:2}
.cta-strip p{color:rgba(255,255,255,.75);font-size:14px;margin-top:6px;position:relative;z-index:2}
.cta-strip .btn{position:relative;z-index:2}
@media (max-width:640px){.cta-strip{padding:24px 20px}.cta-strip h2{font-size:19px}}

/* ---------- 检查清单卡 ---------- */
.check-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;display:flex;gap:14px;align-items:flex-start;box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.check-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.check-icon{
  width:34px;height:34px;flex:none;border-radius:11px;background:rgba(0,196,140,.12);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);
}
.check-icon svg{width:18px;height:18px}
.check-card h3{font-size:16px}
.check-card p{font-size:14px;margin-top:6px;line-height:1.72}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  color:var(--brand-700);background:rgba(0,196,140,.10);
  padding:6px 13px;border-radius:var(--r-pill);
}
.tag-violet{color:#4A3CD1;background:rgba(110,91,255,.12)}

/* ---------- FAQ ---------- */
.faq-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:6px 26px;box-shadow:var(--shadow-1)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 0;
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  color:var(--ink-900);font-weight:700;font-size:16.5px;line-height:1.6;
  transition:color .14s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-700)}
.faq-item summary::after{
  content:"";width:9px;height:9px;flex:none;margin-top:8px;
  border-right:2px solid var(--brand-700);border-bottom:2px solid var(--brand-700);
  transform:rotate(45deg);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-answer{padding:0 0 20px;font-size:15px;line-height:1.8;max-width:72ch;color:var(--ink-600)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--grad-dark);color:rgba(255,255,255,.72);margin-top:8px;padding:64px 0 28px}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
@media (max-width:1023px){.footer-top{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:640px){.footer-top{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{color:#fff}
.footer-about{font-size:14px;line-height:1.8;max-width:46ch;color:rgba(255,255,255,.66)}
.footer-col h3{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.70);transition:color .14s ease}
.footer-col a:hover{color:var(--brand-300)}
.footer-col p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.62)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.52);
}