/* roulang page: index */
:root{
  --paper:#FAF8F4;
  --ink:#14110E;
  --ink-2:#2A2622;
  --green:#1E7A63;
  --green-dark:#16624F;
  --green-soft:#E6F0EC;
  --green-lt:#5FC3A4;
  --sand:#EFE7DA;
  --clay:#C0693A;
  --line:#E7E1D7;
  --muted:#6F6A62;
  --white:#FFFFFF;
  --r-sm:4px;
  --r-md:6px;
  --r-lg:12px;
  --sh-1:0 1px 2px rgba(20,17,14,.05);
  --sh-2:0 12px 28px -12px rgba(20,17,14,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side:240px;
}
*,*::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:1.95;
  color:var(--ink-2);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.25}
:focus-visible{outline:2px solid var(--green);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sand{background:var(--sand)}
.section-line{border-top:1px solid var(--line)}
.reveal{transition:opacity .26s var(--ease),transform .26s var(--ease)}
html.js .reveal{opacity:0;transform:translateY(12px)}
html.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none}
  *{scroll-behavior:auto}
}

/* ---------- 侧边导航 ---------- */
.sidebar{display:none}
.page{min-height:100vh}
.brand{font-size:21px;font-weight:800;letter-spacing:-.02em;line-height:1.2}
.brand span{color:var(--green)}
.brand-light{color:#fff}
.brand-light span{color:var(--green-lt)}
.brand-dark{color:var(--ink)}
.brand-dark span{color:var(--green)}
@media (min-width:992px){
  .sidebar{
    display:block;position:fixed;top:0;left:0;bottom:0;width:var(--side);
    background:var(--ink);border-right:1px solid rgba(231,225,215,.12);z-index:1030;
  }
  .side-inner{display:flex;flex-direction:column;min-height:100%;padding:34px 20px 26px}
  .page{margin-left:var(--side)}
}
@media (min-width:1400px){
  :root{--side:260px}
}
.side-note{font-size:12.5px;letter-spacing:.06em;color:rgba(255,255,255,.45);margin-top:10px}
.side-nav{margin-top:44px;display:flex;flex-direction:column;gap:4px}
.side-nav a{
  position:relative;display:block;padding:11px 14px;border-radius:var(--r-md);
  font-size:15px;color:rgba(255,255,255,.7);
  transition:color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.side-nav a:hover{color:#fff;transform:translateX(2px)}
.side-nav a.active{color:#fff;font-weight:700;background:rgba(30,122,99,.24)}
.side-nav a.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;background:var(--green-lt)}
.side-foot{margin-top:auto;padding-top:26px;border-top:1px solid rgba(255,255,255,.1)}
.side-foot .btn{width:100%;padding:10px 14px;font-size:14px}
.side-ver{display:block;margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.45);letter-spacing:.06em}

/* ---------- 移动端顶部导航 ---------- */
.mobile-bar{
  position:sticky;top:0;z-index:1040;display:flex;align-items:center;justify-content:space-between;
  padding:12px 20px;background:var(--paper);border-bottom:1px solid var(--line);
}
@media (min-width:992px){.mobile-bar{display:none}}
.burger{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.burger:hover{border-color:var(--green)}
.burger i{display:block;width:17px;height:1.6px;background:var(--ink);border-radius:2px}
.drawer{
  position:fixed;inset:0;z-index:1060;background:var(--paper);
  display:none;flex-direction:column;padding:20px 22px 32px;overflow-y:auto;
}
.drawer.open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;
  color:var(--ink);font-size:18px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.drawer-nav{margin-top:32px;display:flex;flex-direction:column;gap:6px;text-align:center}
.drawer-nav a{padding:14px 10px;font-size:19px;font-weight:600;color:var(--ink);border-radius:var(--r-md)}
.drawer-nav a.active{color:var(--green);background:var(--green-soft)}
.drawer-foot{margin-top:auto;padding-top:28px;border-top:1px solid var(--line);text-align:center}
.drawer-foot .btn{width:100%}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-md);font-size:15px;font-weight:600;
  border:1.5px solid transparent;line-height:1.4;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-green{background:var(--green);color:#fff}
.btn-green:hover{background:var(--green-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-green:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-ghost:active{transform:translateY(0)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--green);
}
.link-arrow .ar{transition:transform .22s var(--ease)}
.link-arrow:hover .ar{transform:translateX(3px)}
.tag{
  display:inline-flex;align-items:center;gap:8px;padding:5px 10px;
  font-size:12px;letter-spacing:.06em;color:var(--green);
  background:var(--green-soft);border:1px solid rgba(30,122,99,.18);border-radius:var(--r-sm);
}
.chip{
  display:inline-block;padding:4px 9px;font-size:12px;letter-spacing:.06em;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
}
.chip-clay{color:var(--clay);border-color:rgba(192,105,58,.28);background:#fff}

/* ---------- Hero ---------- */
.hero{padding:64px 0 56px}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:992px){
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
  .hero{padding:84px 0 72px}
}
.hero h1{
  font-size:clamp(34px,4.4vw,56px);font-weight:800;letter-spacing:-.02em;line-height:1.15;margin-top:18px;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.9;color:var(--muted);max-width:52ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.meta-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px;padding-top:26px;border-top:1px solid var(--line)}
.meta-badges li{
  font-size:12.5px;letter-spacing:.06em;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:5px 10px;
}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#fff}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(20,17,14,0) 55%,rgba(20,17,14,.28) 100%);
}
.hero-caption{
  position:absolute;left:20px;bottom:16px;z-index:2;color:#fff;font-size:13px;letter-spacing:.06em;
}

/* ---------- 板块标题 ---------- */
.section-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:48px}
.section-head h2{font-size:clamp(26px,2.6vw,36px);font-weight:800;letter-spacing:-.01em}
.section-desc{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:60ch}
.section-kicker{font-size:12px;letter-spacing:.14em;color:var(--green);font-weight:700;text-transform:uppercase}

/* ---------- 价值要点（左右交错） ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
  padding:36px 0;border-bottom:1px solid var(--line);
}
.feature-row:last-child{border-bottom:0}
@media (min-width:992px){
  .feature-row{grid-template-columns:1fr 1fr;gap:56px;padding:44px 0}
  .feature-row.reverse .feature-media{order:2}
  .feature-row.reverse .feature-body{order:1}
}
.feature-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#fff}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.feature-num{font-size:12px;letter-spacing:.14em;color:var(--clay);font-weight:700}
.feature-body h3{font-size:22px;font-weight:700;margin-top:10px}
.feature-body p{margin-top:12px;color:var(--muted);font-size:15.5px}
.feature-body .link-arrow{margin-top:18px}

/* ---------- 轮播 ---------- */
.shot-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px}
@media (min-width:992px){.shot-wrap{padding:32px}}
.carousel{display:flex;flex-direction:column}
.carousel-inner{width:100%;border-radius:var(--r-lg);overflow:hidden}
.shot-stage img{width:100%;aspect-ratio:16/9;object-fit:cover}
.shot-thumbs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
.shot-thumb{margin:0;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:#fff}
.shot-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.shot-thumb figcaption{padding:8px 10px;font-size:12.5px;color:var(--muted);letter-spacing:.04em}
.shot-thumb.is-active{border-color:var(--green);box-shadow:0 0 0 1px var(--green)}
.shot-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:22px}
.carousel-indicators{position:static;margin:0;display:flex;gap:10px;justify-content:flex-start}
.carousel-indicators [data-bs-target]{
  width:34px;height:3px;margin:0;border:0;border-radius:2px;background:var(--line);opacity:1;text-indent:0;
}
.carousel-indicators .active{background:var(--green)}
.carousel-ctrl{display:flex;gap:10px}
#shotCarousel .carousel-control-prev,
#shotCarousel .carousel-control-next{
  position:static;width:44px;height:44px;opacity:1;
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);color:var(--ink);
  transition:border-color .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
#shotCarousel .carousel-control-prev:hover,
#shotCarousel .carousel-control-next:hover{border-color:var(--ink);background:var(--ink);color:#fff}
#shotCarousel .ctrl-arrow{font-size:20px;line-height:1}

/* ---------- 系统要求 ---------- */
.spec-list{display:grid;grid-template-columns:1fr;gap:0}
@media (min-width:768px){.spec-list{grid-template-columns:1fr 1fr;gap:0 56px}}
.spec-row{
  display:grid;grid-template-columns:120px 1fr;gap:16px;align-items:baseline;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.spec-row dt,.spec-row .k{font-size:14px;color:var(--muted);letter-spacing:.04em}
.spec-row .v{font-size:15px;color:var(--ink);font-weight:600}

/* ---------- 评价墙 ---------- */
.quote-grid{display:grid;grid-template-columns:1fr;gap:20px;align-items:start}
@media (min-width:768px){.quote-grid{grid-template-columns:1fr 1fr}}
@media (min-width:992px){.quote-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:24px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.quote-card:hover{transform:translateY(-2px);border-color:var(--green);box-shadow:var(--sh-2)}
.quote-head{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--green-soft);color:var(--green);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 40px;
}
.quote-name{font-weight:700;color:var(--ink);font-size:15px}
.quote-role{font-size:12.5px;color:var(--muted)}
.stars{margin-top:14px;color:var(--clay);font-size:13px;letter-spacing:.2em}
.quote-text{margin-top:10px;font-size:15px;color:var(--ink-2)}
@media (min-width:992px){
  .quote-grid .quote-card:nth-child(2){margin-top:28px}
  .quote-grid .quote-card:nth-child(4){margin-top:-14px}
  .quote-grid .quote-card:nth-child(6){margin-top:20px}
}

/* ---------- 下载区 ---------- */
.download-panel{background:var(--ink);border-radius:var(--r-lg);padding:40px 28px;color:rgba(255,255,255,.72)}
@media (min-width:992px){.download-panel{padding:56px 56px}}
.download-panel h2{color:#fff}
.download-panel .section-desc{color:rgba(255,255,255,.6)}
.platform-grid{display:grid;grid-template-columns:1fr;gap:12px;margin-top:32px}
@media (min-width:640px){.platform-grid{grid-template-columns:1fr 1fr}}
@media (min-width:992px){.platform-grid{grid-template-columns:repeat(4,1fr)}}
.platform-card{
  display:flex;flex-direction:column;gap:6px;padding:18px;
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-md);background:rgba(255,255,255,.03);
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.platform-card:hover{background:rgba(255,255,255,.09);border-color:rgba(95,195,164,.6);transform:translateY(-2px)}
.platform-card .p-name{color:#fff;font-weight:700;font-size:15.5px}
.platform-card .p-ver{font-size:12.5px;letter-spacing:.06em;color:rgba(255,255,255,.55)}
.download-main{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.verify-line{margin-top:26px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.03em}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.news-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1200px){.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(--r-md);
  padding:22px;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:var(--green);box-shadow:var(--sh-2)}
.news-card h3{margin-top:14px;font-size:18px;font-weight:700;line-height:1.5}
.news-card h3 a{transition:color .2s var(--ease)}
.news-card h3 a:hover{color:var(--green)}
.news-sum{
  margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:18px}
.news-foot time{font-size:12.5px;color:var(--muted);letter-spacing:.04em}
.news-empty{
  grid-column:1/-1;padding:48px 24px;text-align:center;background:#fff;
  border:1px dashed var(--line);border-radius:var(--r-md);color:var(--muted);font-size:15px;
}
.news-empty a{color:var(--green);font-weight:600;margin-left:6px;text-decoration:underline;text-underline-offset:3px}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 22px;background:transparent;border:0;text-align:left;
  font-size:18px;font-weight:700;color:var(--ink);
  transition:background .2s var(--ease);
}
.faq-q:hover{background:#FCFAF6}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border:1px solid var(--line);border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--green);font-weight:700;
}
.faq-a{padding:0 22px 22px;color:var(--muted);font-size:15px;display:none}
.faq-item.open .faq-a{display:block}
.faq-item.open .faq-icon{background:var(--green-soft);border-color:rgba(30,122,99,.3)}

/* ---------- CTA 长条 ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  background:var(--sand);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;
}
@media (min-width:992px){.cta-band{padding:40px 48px}}
.cta-band h2{font-size:clamp(22px,2.2vw,28px);font-weight:800}
.cta-band p{margin-top:10px;color:var(--muted);font-size:15px;max-width:62ch}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:rgba(255,255,255,.62);padding:72px 0 30px;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer p{margin-top:16px;font-size:14.5px;line-height:1.85;max-width:38ch}
.footer h3{color:#fff;font-size:14px;letter-spacing:.06em;margin-bottom:16px;font-weight:700}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer a{color:rgba(255,255,255,.6);font-size:14.5px;transition:color .2s var(--ease)}
.footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.45);letter-spacing:.03em;
}

/* ---------- 响应式微调 ---------- */
@media (max-width:991px){
  .section{padding:64px 0}
  .hero{padding:48px 0}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .container{padding:0 18px}
  .hero-cta .btn{width:100%}
  .download-main .btn{width:100%}
  .section-head{margin-bottom:32px}
  .shot-thumbs{grid-template-columns:1fr}
  .spec-row{grid-template-columns:1fr;gap:4px}
  .cta-band{padding:26px 22px}
  .footer{padding:56px 0 26px}
}

/* roulang page: category1 */
:root{
  --paper:#FAF8F4;
  --ink:#14110E;
  --ink-2:#2A2622;
  --green:#1E7A63;
  --green-dark:#16624F;
  --green-soft:#E6F0EC;
  --sand:#EFE7DA;
  --clay:#C0693A;
  --line:#E7E1D7;
  --muted:#6F6A62;
  --r-sm:4px;
  --r-md:6px;
  --r-lg:12px;
  --sh-1:0 1px 2px rgba(20,17,14,.05);
  --sh-2:0 12px 28px -12px rgba(20,17,14,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side-w:240px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.95;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--green-dark);text-decoration:none;}
a:hover{color:var(--green);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.2;}
p{margin:0;}
ul,ol,dl{margin:0;padding:0;}
li{list-style:none;}
:focus-visible{outline:2px solid var(--green);outline-offset:2px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:clamp(56px,7vw,104px) 0;}
.section-tight{padding:clamp(40px,5vw,64px) 0;}

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);
  background:var(--ink);
  border-right:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;
  padding:34px 22px 26px;
  z-index:1040;
  overflow-y:auto;
}
.brand{
  font-size:20px;font-weight:800;letter-spacing:-.01em;
  color:#fff;text-decoration:none;display:inline-block;
}
.brand:hover{color:#fff;}
.brand span{color:#4FC3A1;}
.side-links{display:flex;flex-direction:column;gap:4px;margin-top:42px;flex:1;}
.side-links a{
  display:block;color:rgba(255,255,255,.7);text-decoration:none;
  font-size:15px;padding:11px 12px 11px 14px;
  border-left:3px solid transparent;border-radius:0 var(--r-md) var(--r-md) 0;
  transition:color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.side-links a:hover{color:#fff;transform:translateX(2px);}
.side-links a.active{
  color:#fff;font-weight:700;
  border-left-color:var(--green);
  background:rgba(30,122,99,.2);
}
.side-foot{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;flex-direction:column;gap:10px;}
.side-ver{font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.5);}
.nav-close{
  display:none;position:absolute;top:22px;right:20px;
  background:transparent;border:1px solid rgba(255,255,255,.28);color:#fff;
  width:38px;height:38px;border-radius:var(--r-md);font-size:20px;line-height:1;
}
.mobile-bar{
  display:none;position:sticky;top:0;z-index:1030;
  background:var(--paper);border-bottom:1px solid var(--line);
  padding:12px 20px;align-items:center;justify-content:space-between;
}
.mobile-bar .brand{color:var(--ink);}
.nav-toggle{
  background:transparent;border:1.5px solid var(--ink);color:var(--ink);
  border-radius:var(--r-md);padding:8px 14px;font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;gap:8px;
}
.nav-toggle:hover{background:var(--ink);color:#fff;}

/* ---------- 主区域 ---------- */
.main-wrap{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}
.main-wrap main{flex:1;}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;background:var(--sand);
  border-bottom:1px solid var(--line);overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.14;
}
.page-head .container{position:relative;z-index:1;padding-top:56px;padding-bottom:56px;}
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13.5px;color:var(--muted);letter-spacing:.04em;}
.crumb a{color:var(--muted);text-decoration:none;}
.crumb a:hover{color:var(--green-dark);}
.crumb i{font-size:10px;opacity:.7;}
.page-head h1{
  font-size:clamp(34px,4.4vw,56px);
  font-weight:800;line-height:1.15;letter-spacing:-.02em;
  margin:20px 0 0;max-width:19em;
}
.page-head .lead{
  margin-top:18px;max-width:46em;color:var(--ink-2);font-size:16.5px;
}
.meta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  border-radius:var(--r-sm);padding:6px 11px;
  font-size:12px;letter-spacing:.06em;white-space:nowrap;
}
.badge-green{background:var(--green-soft);border-color:#CFE4DC;color:var(--green-dark);}
.badge-clay{background:#FBF3EE;border-color:#EBD6C8;color:var(--clay);}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  border-radius:var(--r-md);font-size:15px;font-weight:700;
  padding:13px 24px;cursor:pointer;text-decoration:none;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-main{background:var(--green);color:#fff;border:0;}
.btn-main:hover{background:var(--green-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-main:active{transform:none;box-shadow:none;}
.btn-ghost{background:transparent;border:1.5px solid var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-sm{padding:10px 16px;font-size:13.5px;justify-content:center;}
.btn-block{width:100%;justify-content:center;}
.btn-light{background:#fff;color:var(--ink);border:0;}
.btn-light:hover{background:#F1EDE5;color:var(--ink);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline-light{background:transparent;border:1.5px solid rgba(255,255,255,.4);color:#fff;}
.btn-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--green-dark);font-weight:700;font-size:14.5px;
}
.link-arrow i{transition:transform .2s var(--ease);font-size:12px;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 数据条 ---------- */
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;
}
.stat{background:#fff;padding:24px 22px;}
.stat b{display:block;font-size:24px;font-weight:800;letter-spacing:-.01em;}
.stat span{display:block;margin-top:4px;font-size:12.5px;color:var(--muted);letter-spacing:.06em;}

/* ---------- 图文交错 ---------- */
.alt-rows{display:grid;gap:clamp(40px,5vw,72px);}
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,60px);align-items:center;}
.alt-row.rev .alt-media{order:2;}
.alt-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.1em;
  color:var(--green-dark);text-transform:uppercase;
}
.alt-body h2{font-size:clamp(24px,2.4vw,32px);margin:12px 0 0;}
.alt-body p{margin-top:14px;color:var(--ink-2);}
.alt-body .facts{margin-top:18px;border-top:1px solid var(--line);}
.alt-body .facts li{
  display:flex;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px solid var(--line);
  font-size:14.5px;color:var(--muted);
}
.alt-body .facts li b{color:var(--ink);font-weight:700;}
.alt-body .link-arrow{margin-top:18px;}

/* ---------- 引言块 ---------- */
.quote-block{
  background:var(--sand);border-left:3px solid var(--green);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:30px 34px;font-size:17.5px;line-height:1.85;color:var(--ink-2);
}
.quote-block footer{margin-top:12px;font-size:13px;letter-spacing:.06em;color:var(--muted);}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 clamp(32px,5vw,64px);}
.spec-item{
  display:flex;justify-content:space-between;gap:18px;
  padding:15px 0;border-bottom:1px solid var(--line);font-size:15px;
}
.spec-item dt{color:var(--muted);margin:0;}
.spec-item dd{margin:0;font-weight:700;color:var(--ink);text-align:right;}
.sec-head{max-width:48em;margin-bottom:36px;}
.sec-head h2{font-size:clamp(26px,2.6vw,36px);}
.sec-head p{margin-top:14px;color:var(--muted);}

/* ---------- 检查清单卡片 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.check-card:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--sh-2);}
.check-card i{color:var(--green);font-size:16px;}
.check-card h3{font-size:16px;margin-top:12px;}
.check-card p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7;}

/* ---------- 步骤列表 ---------- */
.steps{counter-reset:step;display:grid;gap:12px;max-width:900px;}
.steps li{
  display:flex;gap:18px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 22px;transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.steps li:hover{border-color:var(--green);transform:translateY(-2px);}
.steps li::before{
  counter-increment:step;content:counter(step);
  flex:0 0 30px;height:30px;border-radius:var(--r-sm);
  background:var(--green-soft);color:var(--green-dark);
  font-weight:800;font-size:14px;
  display:flex;align-items:center;justify-content:center;
}
.steps li div strong{display:block;font-size:16px;}
.steps li div span{display:block;margin-top:4px;font-size:14.5px;color:var(--muted);}

/* ---------- CTA 长条 ---------- */
.cta-strip{
  background:var(--ink);color:#fff;
  border-radius:var(--r-lg);
  padding:clamp(32px,5vw,56px);
  display:grid;grid-template-columns:1.05fr 1fr;
  gap:clamp(28px,4vw,56px);align-items:center;
}
.cta-strip h2{color:#fff;font-size:clamp(24px,2.4vw,32px);}
.cta-strip p{margin-top:14px;color:rgba(255,255,255,.72);font-size:15.5px;}
.cta-btns{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.cta-btns .btn-main{background:var(--green);}
.cta-btns .btn-main:hover{background:#2A8E74;}
.cta-note{
  grid-column:1 / -1;margin-top:6px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.55);letter-spacing:.04em;
}
.plat-btn{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:14px 18px;}
.plat-btn small{font-size:11.5px;font-weight:600;letter-spacing:.06em;opacity:.72;}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:clamp(24px,3vw,44px);}
.footer .brand-light{color:#fff;font-size:19px;}
.footer p{margin-top:16px;font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.6);max-width:32em;}
.footer h3{font-size:13px;letter-spacing:.1em;color:#fff;margin-bottom:14px;font-weight:700;}
.footer-links a{
  display:block;padding:6px 0;font-size:14.5px;
  color:rgba(255,255,255,.6);text-decoration:none;
  transition:color .2s var(--ease);
}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s var(--ease),transform .26s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:1400px){
  :root{--side-w:260px;}
}
@media (max-width:1199px){
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .check-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .side-nav{
    width:100%;padding:28px 24px;
    align-items:center;text-align:center;
    transform:translateX(-105%);
    transition:transform .28s var(--ease);
  }
  .side-nav.open{transform:none;}
  .side-nav .brand{font-size:22px;}
  .side-links{margin-top:34px;width:100%;align-items:center;}
  .side-links a{
    width:100%;text-align:center;font-size:19px;padding:14px 12px;
    border-left:none;border-radius:var(--r-md);
  }
  .side-links a.active{border-left:none;background:rgba(30,122,99,.22);}
  .side-foot{width:100%;align-items:center;}
  .nav-close{display:block;}
  .mobile-bar{display:flex;}
  .main-wrap{margin-left:0;}
  .alt-row{grid-template-columns:1fr;gap:26px;}
  .alt-row.rev .alt-media{order:0;}
  .spec-grid{grid-template-columns:1fr;gap:0;}
  .cta-strip{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .stat-grid,.check-grid{grid-template-columns:1fr;}
  .cta-btns{grid-template-columns:1fr;}
  .btn-main,.btn-ghost{width:100%;justify-content:center;}
  .cta-strip{padding:32px 22px;}
  .quote-block{padding:24px 22px;font-size:16.5px;}
  .footer{padding:48px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .page-head .container{padding-top:40px;padding-bottom:44px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --paper:#FAF8F4;
  --ink:#14110E;
  --ink-2:#2A2622;
  --green:#1E7A63;
  --green-dark:#16624F;
  --green-soft:#E6F0EC;
  --green-tint:#9FD9C6;
  --sand:#EFE7DA;
  --clay:#C0693A;
  --line:#E7E1D7;
  --muted:#6F6A62;
  --white:#FFFFFF;
  --r-sm:4px;
  --r-md:6px;
  --r-lg:12px;
  --sh-1:0 1px 2px rgba(20,17,14,.05);
  --sh-2:0 12px 28px -12px rgba(20,17,14,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side:240px;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.95;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}

/* ---------- 品牌 ---------- */
.brand{display:inline-flex;align-items:baseline;gap:2px;font-size:20px;font-weight:800;letter-spacing:-.01em;color:#fff;line-height:1.2}
.brand span{color:var(--green-tint)}
.brand-light{color:var(--ink)}
.brand-light span{color:var(--green)}

/* ---------- 左侧竖导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:var(--ink);color:#fff;
  border-right:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;
  padding:30px 0 22px;z-index:60;
}
.sidebar-head{padding:0 22px 22px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar-sub{margin:12px 0 0;font-size:12.5px;line-height:1.8;color:rgba(255,255,255,.5);letter-spacing:.02em}
.side-nav{display:flex;flex-direction:column;padding:18px 0;flex:1 1 auto}
.side-nav a{
  position:relative;display:block;padding:12px 22px;
  font-size:15px;color:rgba(255,255,255,.7);
  border-left:3px solid transparent;
  transition:color .22s var(--ease),transform .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease);
}
.side-nav a:hover{color:#fff;transform:translateX(2px)}
.side-nav a.active{color:#fff;font-weight:700;background:rgba(30,122,99,.22);border-left-color:var(--green)}
.sidebar-foot{padding:0 22px;border-top:1px solid rgba(255,255,255,.08);padding-top:18px}
.side-cta{
  display:block;text-align:center;padding:10px 14px;border-radius:var(--r-md);
  background:var(--green);color:#fff;font-size:14px;font-weight:700;
  transition:background-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.side-cta:hover{background:var(--green-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.side-ver{margin:12px 0 0;font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.42)}

/* ---------- 移动端顶栏 + 抽屉 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:70;
  background:var(--paper);border-bottom:1px solid var(--line);
  padding:14px 20px;align-items:center;justify-content:space-between;
}
.topbar .brand{color:var(--ink);font-size:18px}
.topbar .brand span{color:var(--green)}
.burger{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  cursor:pointer;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.burger:hover{border-color:var(--green);box-shadow:var(--sh-1)}
.burger i{display:block;width:18px;height:1.6px;background:var(--ink);border-radius:2px}
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:32px 24px;
}
.drawer.open{display:flex}
.drawer-close{
  position:absolute;top:20px;right:20px;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;font-size:20px;line-height:1;cursor:pointer;color:var(--ink);
}
.drawer a{font-size:22px;font-weight:700;color:var(--ink);padding:14px 10px;letter-spacing:-.01em}
.drawer a.active{color:var(--green)}
.drawer .drawer-cta{margin-top:22px;background:var(--green);color:#fff;border-radius:var(--r-md);padding:14px 34px;font-size:16px}

/* ---------- 主区域 ---------- */
.page-wrap{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column}
.page-main{flex:1 1 auto}

/* ---------- 区块 ---------- */
.section{padding:88px 0}
.section-tight{padding:56px 0}
.section-sand{background:var(--sand)}
.section-head{margin-bottom:44px;max-width:760px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--green-dark);background:var(--green-soft);border-radius:var(--r-sm);padding:4px 10px;margin-bottom:14px;font-weight:700;
}
.section-head h2{font-size:clamp(26px,2.6vw,36px);font-weight:800;letter-spacing:-.02em}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}

/* ---------- 文章头 ---------- */
.article-hero{padding:52px 0 32px;border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:26px}
.crumb a{color:var(--muted);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--green-dark)}
.crumb .sep{color:#C9C1B4}
.crumb .cur{color:var(--ink-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  font-size:clamp(30px,3.6vw,48px);font-weight:800;letter-spacing:-.02em;line-height:1.18;
  max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px;font-size:13.5px;color:var(--muted)}
.badge-tag{
  display:inline-block;font-size:12px;letter-spacing:.06em;font-weight:700;
  color:var(--green-dark);background:var(--green-soft);border:1px solid rgba(30,122,99,.24);
  border-radius:var(--r-sm);padding:3px 10px;
}
.badge-clay{
  display:inline-block;font-size:12px;letter-spacing:.06em;font-weight:700;
  color:var(--clay);background:#FBF0E9;border:1px solid rgba(192,105,58,.28);
  border-radius:var(--r-sm);padding:3px 10px;
}
.meta-dot{width:4px;height:4px;background:#CFC7B9;border-radius:50%;display:inline-block}

/* ---------- 正文 ---------- */
.article-stage{padding:56px 0 72px}
.article-card{
  max-width:880px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:48px 48px 44px;box-shadow:var(--sh-1);
}
.article-body{max-width:780px;margin:0 auto;font-size:16px;line-height:1.95;color:var(--ink-2)}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:clamp(22px,2.2vw,28px);font-weight:800;letter-spacing:-.01em;
  margin:2.2em 0 .8em;padding-left:14px;border-left:3px solid var(--green);line-height:1.4;
}
.article-body h3{font-size:20px;font-weight:700;margin:1.9em 0 .6em}
.article-body h4{font-size:17px;font-weight:700;margin:1.6em 0 .5em}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0}
.article-body ul{list-style:none;padding-left:0;margin:0 0 1.3em}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.55em}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.82em;width:7px;height:7px;background:var(--green);
  transform:rotate(45deg);border-radius:1px;
}
.article-body ol{counter-reset:item;list-style:none;padding-left:0;margin:0 0 1.3em}
.article-body ol li{counter-increment:item;position:relative;padding-left:34px;margin-bottom:.6em}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:.42em;width:22px;height:22px;
  display:flex;align-items:center;justify-content:center;line-height:1;
  background:var(--green-soft);color:var(--green-dark);font-size:12.5px;font-weight:800;border-radius:var(--r-sm);
}
.article-body blockquote{
  margin:1.7em 0;padding:18px 22px;background:var(--sand);
  border-left:3px solid var(--green);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:1.6em 0 .7em;border:1px solid var(--line)}
.article-body figure{margin:1.6em 0}
.article-body figcaption,.article-body .caption{font-size:13px;color:var(--muted);text-align:center;line-height:1.7}
.article-body pre{
  background:var(--ink);color:#F3F0EA;padding:18px 20px;border-radius:var(--r-sm);
  overflow-x:auto;font-size:14px;line-height:1.75;margin:1.6em 0;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;
  background:var(--sand);color:var(--ink);padding:2px 6px;border-radius:var(--r-sm);
}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:1.7em 0;font-size:15px}
.article-body th{background:var(--sand);color:var(--ink);font-weight:700;text-align:left}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;vertical-align:top}
.article-body a{color:var(--green-dark);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--green)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* ---------- 空态 ---------- */
.empty-state{max-width:640px;margin:24px auto;text-align:center;padding:56px 32px;border:1px dashed var(--line);border-radius:var(--r-md);background:#fff}
.empty-state h2{font-size:26px;font-weight:800;margin-bottom:12px}
.empty-state p{color:var(--muted);margin-bottom:24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--r-md);font-size:15px;font-weight:700;
  border:1.5px solid transparent;cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink);border-color:transparent}
.btn-light:hover{background:var(--green-soft);color:var(--green-dark);transform:translateY(-1px)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--green-dark);font-weight:700;font-size:15px}
.btn-link .arw{transition:transform .22s var(--ease)}
.btn-link:hover .arw{transform:translateX(3px)}
.btn-block{width:100%}

/* ---------- 标签 / 徽章 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-block;font-size:12.5px;letter-spacing:.04em;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:5px 12px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{border-color:var(--green);color:var(--green-dark)}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:4px 10px;
}

/* ---------- 文章尾部 ---------- */
.article-foot{max-width:880px;margin:0 auto;padding:0 0 8px}
.foot-block{padding:34px 0;border-top:1px solid var(--line)}
.foot-label{font-size:12px;letter-spacing:.1em;color:var(--muted);font-weight:700;margin-bottom:14px;text-transform:uppercase}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.pager a{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.pager a:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--sh-2)}
.pager .dir{font-size:12.5px;color:var(--muted);letter-spacing:.06em}
.pager .ttl{margin-top:8px;font-size:16px;font-weight:700;color:var(--ink);line-height:1.6}
.pager .right{text-align:right}

/* ---------- 相关推荐卡片 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  display:flex;flex-direction:column;height:100%;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-media{position:relative;aspect-ratio:16/9;background:var(--sand);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .28s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-body h3{font-size:17px;font-weight:700;line-height:1.55}
.card-body p{font-size:14px;color:var(--muted);line-height:1.8;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);letter-spacing:.02em}

/* ---------- 下载 CTA ---------- */
.cta-band{background:var(--ink);color:#fff;padding:64px 0;border-radius:0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-inner h2{color:#fff;font-size:clamp(24px,2.4vw,32px);font-weight:800;letter-spacing:-.02em}
.cta-inner p{color:rgba(255,255,255,.66);margin-top:12px;font-size:15px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-note{margin-top:22px;font-size:12.5px;color:rgba(255,255,255,.45);letter-spacing:.02em}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:rgba(255,255,255,.6);padding:72px 0 26px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer .brand{font-size:19px}
.footer p{margin-top:14px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.55);max-width:340px}
.footer h3{color:#fff;font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.6);transition:color .2s var(--ease)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.45);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s var(--ease),transform .26s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (min-width:1400px){:root{--side:260px}}
@media (max-width:1199.98px){
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .sidebar{display:none}
  .topbar{display:flex}
  .page-wrap{margin-left:0}
  .section{padding:64px 0}
  .article-card{padding:34px 26px}
  .article-hero{padding:38px 0 26px}
}
@media (max-width:767.98px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .section{padding:56px 0}
  .rel-grid{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .pager .right{text-align:left}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer{padding:56px 0 22px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .btn{width:100%}
  .btn-link{width:auto}
  .article-hero h1{font-size:28px}
  .crumb .cur{white-space:normal;max-width:100%}
}
@media (max-width:519.98px){
  .article-card{padding:26px 18px;border-left:0;border-right:0;border-radius:0}
  .article-stage{padding:36px 0 48px}
  .article-meta{gap:10px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --paper:#FAF8F4;
  --ink:#14110E;
  --ink-2:#2A2622;
  --green:#1E7A63;
  --green-dark:#16624F;
  --green-soft:#E6F0EC;
  --green-light:#4FBFA0;
  --sand:#EFE7DA;
  --clay:#C0693A;
  --line:#E7E1D7;
  --muted:#6F6A62;
  --card:#FFFFFF;
  --r-sm:4px;
  --r-md:6px;
  --r-lg:12px;
  --sh-1:0 1px 2px rgba(20,17,14,.05);
  --sh-2:0 12px 28px -12px rgba(20,17,14,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side:240px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.95;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* ---------- 左侧固定导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:var(--ink);
  border-right:1px solid rgba(231,225,215,.12);
  display:flex;flex-direction:column;
  padding:34px 22px 24px;
  z-index:60;
}
.brand{font-size:21px;font-weight:800;letter-spacing:-.02em;line-height:1.2;color:#fff;display:inline-block}
.brand span{color:var(--green-light)}
.side-brand{margin-bottom:40px}
.side-tag{font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.45);margin-top:10px}
.side-nav nav{display:flex;flex-direction:column;gap:4px;flex:1}
.side-nav nav a{
  position:relative;
  display:block;
  padding:11px 14px;
  border-radius:var(--r-md);
  font-size:15px;
  color:rgba(255,255,255,.7);
  transition:color .22s var(--ease),transform .22s var(--ease),background-color .22s var(--ease);
}
.side-nav nav a:hover{color:#fff;transform:translateX(2px);background:rgba(255,255,255,.05)}
.side-nav nav a.active{
  color:#fff;font-weight:700;background:rgba(30,122,99,.28);
}
.side-nav nav a.active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:2px;background:var(--green-light);
}
.side-foot{border-top:1px solid rgba(231,225,215,.14);padding-top:18px}
.side-dl{
  display:block;text-align:center;
  background:var(--green);color:#fff;
  font-size:14px;font-weight:600;
  padding:10px 12px;border-radius:var(--r-md);
  transition:background-color .22s var(--ease),transform .22s var(--ease);
}
.side-dl:hover{background:var(--green-dark);color:#fff;transform:translateY(-1px)}
.side-ver{font-size:12px;color:rgba(255,255,255,.45);margin-top:12px;line-height:1.7}

/* ---------- 移动端顶栏 + 抽屉 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:70;
  align-items:center;justify-content:space-between;
  padding:12px 18px;background:var(--paper);
  border-bottom:1px solid var(--line);
}
.brand-dark{color:var(--ink);font-size:19px}
.brand-dark span{color:var(--green)}
.burger{
  width:42px;height:38px;display:flex;flex-direction:column;justify-content:center;gap:5px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:0 10px;cursor:pointer;
}
.burger i{display:block;height:1.5px;background:var(--ink);border-radius:2px}
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--ink);
  display:none;flex-direction:column;padding:24px 24px 36px;
}
.drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:34px}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-md);
  background:transparent;border:1px solid rgba(255,255,255,.3);
  color:#fff;font-size:20px;line-height:1;cursor:pointer;
}
.drawer nav{display:flex;flex-direction:column;gap:6px;flex:1;justify-content:center;text-align:center}
.drawer nav a{color:rgba(255,255,255,.82);font-size:22px;font-weight:600;padding:12px 0}
.drawer nav a.active{color:var(--green-light)}
.drawer .side-dl{margin-top:12px}

/* ---------- 主体 ---------- */
.page{margin-left:var(--side)}
main{display:block}

/* 面包屑 & 页头 */
.crumb{padding:36px 0 0;font-size:13px;letter-spacing:.04em;color:var(--muted)}
.crumb a{color:var(--muted);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--green)}
.crumb span.sep{margin:0 8px;color:#C9C2B6}
.crumb strong{color:var(--ink);font-weight:600}

.page-head{padding:26px 0 44px;border-bottom:1px solid var(--line)}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;
  color:var(--green);background:var(--green-soft);
  border:1px solid rgba(30,122,99,.18);border-radius:var(--r-sm);
  padding:4px 10px;margin-bottom:20px;
}
.page-head h1{
  font-size:clamp(34px,4.4vw,56px);
  font-weight:800;letter-spacing:-.02em;line-height:1.15;
  max-width:900px;
}
.lead{
  margin-top:20px;max-width:760px;color:var(--ink-2);font-size:17px;
}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.badge-chip{
  display:inline-flex;align-items:center;
  font-size:12px;letter-spacing:.05em;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:5px 10px;
}
.badge-chip.accent{color:var(--clay);border-color:rgba(192,105,58,.35);background:#FCF6F1}

/* 目录 + 内容 */
.doc-layout{
  display:grid;grid-template-columns:220px minmax(0,1fr);
  gap:52px;align-items:start;
  padding:64px 0 96px;
}
.index-rail{position:sticky;top:36px}
.rail-title{
  font-size:12px;letter-spacing:.1em;color:var(--muted);
  text-transform:uppercase;margin-bottom:14px;padding-bottom:10px;
  border-bottom:1px solid var(--line);
}
.rail-links{display:flex;flex-direction:column;gap:2px}
.rail-links a{
  display:block;font-size:14px;color:var(--muted);
  padding:8px 12px;border-left:2px solid transparent;border-radius:0 var(--r-sm) var(--r-sm) 0;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.rail-links a:hover{color:var(--ink);background:var(--sand);border-left-color:var(--green)}
.rail-tip{
  margin-top:22px;padding:16px;background:var(--sand);border-radius:var(--r-md);
  font-size:13px;line-height:1.8;color:var(--ink-2);
}

.doc-body{min-width:0}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 32px}
.grid-2 > .blk:nth-child(even){margin-top:46px}

.blk{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:30px 28px 28px;box-shadow:var(--sh-1);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.blk:hover{border-color:rgba(30,122,99,.55);transform:translateY(-2px);box-shadow:var(--sh-2)}
.blk-head{display:flex;align-items:baseline;gap:12px;margin-bottom:8px}
.blk-num{
  font-size:12px;letter-spacing:.08em;color:var(--clay);
  border:1px solid rgba(192,105,58,.3);border-radius:var(--r-sm);
  padding:2px 7px;background:#FCF6F1;flex:0 0 auto;
}
.blk h2{font-size:22px;font-weight:700;letter-spacing:-.01em;line-height:1.4}
.blk h3{font-size:19px;font-weight:700;line-height:1.4}
.blk p{margin-top:12px;color:var(--ink-2);font-size:15.5px;line-height:1.9}
.blk-figure{margin-top:18px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line)}
.blk-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.blk-figure figcaption{font-size:12.5px;color:var(--muted);padding:8px 12px;background:var(--sand);letter-spacing:.03em}

.ticks{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.ticks li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-2);line-height:1.8}
.ticks li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  background:var(--green);border-radius:1px;
}
.steps{margin-top:16px;counter-reset:s;display:flex;flex-direction:column;gap:12px}
.steps li{position:relative;padding-left:34px;font-size:15px;color:var(--ink-2);line-height:1.8;counter-increment:s}
.steps li::before{
  content:counter(s);position:absolute;left:0;top:3px;
  width:22px;height:22px;border-radius:var(--r-sm);
  background:var(--green-soft);color:var(--green);
  font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.kv{margin-top:16px;border-top:1px solid var(--line)}
.kv div{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.kv dt{color:var(--muted)}
.kv dd{margin:0;color:var(--ink);font-weight:600;text-align:right}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;margin-top:20px;
  font-size:14px;font-weight:600;color:var(--green);
}
.link-arrow i{font-style:normal;transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--green-dark)}
.link-arrow:hover i{transform:translateX(3px)}

/* 紧凑 4 列数据条 */
.tight-band{margin:48px 0;padding:30px 28px;background:var(--sand);border-radius:var(--r-lg)}
.tight-head{font-size:13px;letter-spacing:.08em;color:var(--muted);margin-bottom:22px}
.tight-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:18px 16px}
.stat b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.2}
.stat b em{font-style:normal;font-size:14px;font-weight:600;color:var(--muted);margin-left:4px}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--muted);line-height:1.7}

/* CTA 长条 */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--ink) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:56px 48px;margin:0 0 96px;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(20,17,14,.84)}
.cta-inner{position:relative;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta-inner h2{color:#fff;font-size:clamp(24px,2.4vw,32px);font-weight:800;letter-spacing:-.01em;line-height:1.3;max-width:560px}
.cta-inner p{color:rgba(255,255,255,.66);font-size:14.5px;margin-top:12px;max-width:560px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--green);color:#fff;font-size:15px;font-weight:600;
  padding:13px 24px;border:0;border-radius:var(--r-md);cursor:pointer;
  box-shadow:var(--sh-1);
  transition:background-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-main:hover{background:var(--green-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:#fff;font-size:15px;font-weight:600;
  padding:12px 22px;border:1.5px solid rgba(255,255,255,.55);border-radius:var(--r-md);
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;transform:translateY(-1px)}

/* 页脚 */
.footer{background:var(--ink);color:rgba(255,255,255,.78);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer .brand-light{color:#fff;font-size:20px}
.footer .brand-light span{color:var(--green-light)}
.footer p{font-size:14px;color:rgba(255,255,255,.6);margin-top:16px;line-height:1.9;max-width:420px}
.footer h3{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.6);transition:color .2s var(--ease),text-decoration-color .2s var(--ease)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(231,225,215,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* 进入视口动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s var(--ease),transform .26s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (min-width:1400px){
  :root{--side:260px}
}
@media (max-width:1199px){
  .doc-layout{grid-template-columns:190px minmax(0,1fr);gap:32px}
  .grid-2{gap:26px}
  .blk{padding:26px 22px}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}
}
@media (max-width:991px){
  .side-nav{display:none}
  .topbar{display:flex}
  .page{margin-left:0}
  .container{padding:0 20px}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:28px;padding:44px 0 72px}
  .index-rail{position:static;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:16px}
  .rail-title{border-bottom:0;margin-bottom:10px;padding-bottom:0}
  .rail-links{flex-direction:row;flex-wrap:wrap;gap:8px}
  .rail-links a{border-left:0;border:1px solid var(--line);border-radius:var(--r-sm);padding:6px 10px;font-size:13px}
  .rail-links a:hover{border-color:var(--green);background:var(--green-soft)}
  .rail-tip{display:none}
  .grid-2 > .blk:nth-child(even){margin-top:0}
  .grid-2{gap:20px}
  .tight-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{padding:40px 28px;margin-bottom:72px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer{padding:56px 0 24px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .grid-2{grid-template-columns:minmax(0,1fr)}
  .page-head{padding:18px 0 32px}
  .lead{font-size:16px}
  .doc-layout{padding:36px 0 56px}
  .cta-actions{width:100%;flex-direction:column}
  .btn-main,.btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .tight-4{grid-template-columns:minmax(0,1fr)}
  .blk{padding:22px 18px}
  .cta-band{padding:32px 20px}
  .stat b{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .blk:hover{transform:none}
  .btn-main:hover,.btn-ghost:hover,.side-dl:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --paper:#FAF8F4;
  --ink:#14110E;
  --ink-2:#2A2622;
  --green:#1E7A63;
  --green-dark:#16624F;
  --green-soft:#E6F0EC;
  --green-lite:#46B08F;
  --sand:#EFE7DA;
  --clay:#C0693A;
  --line:#E7E1D7;
  --muted:#6F6A62;
  --r-sm:4px;
  --r-md:6px;
  --r-lg:12px;
  --sh-1:0 1px 2px rgba(20,17,14,.05);
  --sh-2:0 12px 28px -12px rgba(20,17,14,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar:240px;
}
@media (min-width:1400px){ :root{ --sidebar:260px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  padding-left:var(--sidebar);
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.95;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.wrap{max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.band-sand{background:var(--sand);}

/* ---------- 侧栏 / 顶部导航 ---------- */
.side-header{
  position:fixed;
  top:0;left:0;
  width:var(--sidebar);
  height:100vh;
  background:var(--ink);
  border-right:1px solid rgba(255,255,255,.08);
  padding:30px 22px 26px;
  display:flex;
  flex-direction:column;
  z-index:1100;
}
.side-top{display:block;}
.brand{
  display:inline-block;
  font-size:20px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.2;
  color:#fff;
}
.brand span{color:var(--green-lite);}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:38px;}
.side-nav a{
  position:relative;
  padding:11px 14px;
  border-radius:var(--r-md);
  font-size:15px;
  color:rgba(255,255,255,.7);
  transition:color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.side-nav a:hover{color:#fff;background:rgba(255,255,255,.06);transform:translateX(2px);}
.side-nav a.active{color:#fff;font-weight:700;background:rgba(30,122,99,.24);}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  background:var(--green);border-radius:2px;
}
.side-cta{margin-top:auto;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);}
.side-cta .rl-btn{width:100%;justify-content:center;padding:10px 14px;font-size:14px;}
.side-ver{margin-top:12px;font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.45);}
.nav-toggle{
  display:none;
  align-items:center;gap:8px;
  padding:8px 14px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  font-size:14px;color:var(--ink);
}
.nav-toggle .bars{display:inline-flex;flex-direction:column;gap:4px;}
.nav-toggle .bars i{display:block;width:16px;height:1.5px;background:var(--ink);}

.drawer{
  position:fixed;inset:0;z-index:1300;
  background:var(--paper);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer.open{opacity:1;visibility:visible;}
.drawer nav{display:flex;flex-direction:column;align-items:center;gap:6px;}
.drawer nav a{font-size:20px;font-weight:600;padding:14px 26px;border-radius:var(--r-md);}
.drawer nav a.active{color:var(--green);background:var(--green-soft);}
.drawer-close{position:absolute;top:22px;right:22px;font-size:14px;color:var(--muted);border:1px solid var(--line);border-radius:var(--r-sm);padding:8px 14px;}

/* ---------- 按钮 ---------- */
.rl-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 24px;
  border-radius:var(--r-md);
  font-size:15px;font-weight:600;
  border:1.5px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rl-btn-primary{background:var(--green);color:#fff;}
.rl-btn-primary:hover{background:var(--green-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.rl-btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.rl-btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.rl-btn-ghost:hover{background:var(--ink);color:#fff;}
.rl-btn-light{background:#fff;color:var(--ink);}
.rl-btn-light:hover{background:var(--green-soft);transform:translateY(-1px);box-shadow:var(--sh-2);}
.rl-btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.rl-btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.rl-btn:focus-visible,.nav-toggle:focus-visible,.drawer-close:focus-visible,.side-nav a:focus-visible,.footer a:focus-visible{
  outline:2px solid var(--green);outline-offset:2px;
}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--green);}
.link-arrow .arw{transition:transform .22s var(--ease);}
.link-arrow:hover .arw{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.tag{
  display:inline-block;
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  font-size:12px;letter-spacing:.06em;
  color:var(--muted);
  background:#fff;
}
.tag-green{border-color:rgba(30,122,99,.35);color:var(--green);background:var(--green-soft);}
.tag-clay{border-color:rgba(192,105,58,.3);color:var(--clay);background:#fff;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 页面头部 ---------- */
.page-head{padding:72px 0 52px;border-bottom:1px solid var(--line);position:relative;overflow:hidden;}
.page-head::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-radius:50%;opacity:.12;pointer-events:none;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;}
.crumbs a:hover{color:var(--green);}
.crumbs .sep{color:var(--line);}
.page-head h1{
  font-size:clamp(34px,4.4vw,56px);
  font-weight:800;letter-spacing:-.02em;line-height:1.15;
  max-width:900px;
}
.lede{margin-top:22px;max-width:760px;font-size:16.5px;color:var(--muted);}
.head-meta{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 板块标题 ---------- */
.sec-head{max-width:760px;}
.sec-head h2{
  font-size:clamp(26px,2.6vw,36px);
  font-weight:800;letter-spacing:-.015em;line-height:1.25;
  margin-top:16px;
}
.sec-head p{margin-top:16px;color:var(--muted);font-size:16px;}
.sec-head--split{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;max-width:none;flex-wrap:wrap;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:56px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:16px;bottom:26px;width:2px;
  background:linear-gradient(180deg,var(--green) 0%,var(--line) 100%);
}
.tl-item{position:relative;padding-left:66px;margin-bottom:34px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:0;top:2px;
  width:40px;height:40px;border-radius:50%;
  background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;letter-spacing:.04em;
  border:2px solid var(--paper);
  box-shadow:var(--sh-1);
}
.tl-item.key .tl-dot{background:var(--green);}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 28px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.tl-card:hover{border-color:var(--green);box-shadow:var(--sh-2);transform:translateY(-2px);}
.tl-card h3{font-size:21px;font-weight:700;line-height:1.4;}
.tl-card > p{margin-top:12px;color:var(--muted);font-size:15.5px;}
.ticks{margin-top:16px;display:grid;gap:8px;}
.ticks li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-2);}
.ticks li::before{
  content:"";position:absolute;left:0;top:13px;width:6px;height:6px;
  background:var(--green);border-radius:2px;
}
.tl-meta{margin-top:18px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 图片带 ---------- */
.figure-band{
  margin:56px 0 0;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  background:#fff;
}
.figure-band img{width:100%;height:340px;object-fit:cover;}
.figure-band figcaption{
  padding:14px 20px;font-size:13px;color:var(--muted);
  border-top:1px solid var(--line);
}

/* ---------- 速览卡片（两列错位） ---------- */
.overview{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:48px;}
.ov-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.ov-card:hover{border-color:var(--green);box-shadow:var(--sh-2);transform:translateY(-2px);}
.ov-card:nth-child(even){margin-top:26px;}
.ov-card .idx{font-size:12px;letter-spacing:.08em;color:var(--clay);font-weight:700;}
.ov-card h3{margin-top:12px;font-size:20px;font-weight:700;}
.ov-card p{margin-top:12px;color:var(--muted);font-size:15.5px;}
.def-list{margin-top:18px;border-top:1px solid var(--line);}
.def-list div{display:flex;justify-content:space-between;gap:18px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px;}
.def-list dt{color:var(--muted);}
.def-list dd{margin:0;font-weight:600;font-variant-numeric:tabular-nums;}

/* ---------- 自查清单（四列紧凑） ---------- */
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:44px;}
.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 20px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.check-card:hover{border-color:var(--green);box-shadow:var(--sh-2);transform:translateY(-2px);}
.check-card .mark{
  width:28px;height:28px;border-radius:50%;
  background:var(--green-soft);color:var(--green);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;
  border:1px solid rgba(30,122,99,.25);
}
.check-card h3{margin-top:16px;font-size:16.5px;font-weight:700;line-height:1.5;}
.check-card p{margin-top:10px;font-size:14px;color:var(--muted);}

/* ---------- 引用块 ---------- */
.quote-block{
  margin-top:56px;
  background:var(--sand);
  border-left:3px solid var(--green);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:32px 36px;
}
.quote-block p{font-size:17px;line-height:1.9;color:var(--ink-2);}
.quote-block .who{margin-top:16px;font-size:13px;letter-spacing:.06em;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-list{margin-top:44px;max-width:900px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:border-color .22s var(--ease);}
.faq-item:hover{border-color:#d9d1c4;}
.faq-item[open]{border-color:var(--green);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:20px 24px;
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  font-size:18px;font-weight:700;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:none;color:var(--green);font-size:22px;font-weight:600;line-height:1.2;
  transition:transform .22s var(--ease);
}
.faq-item[open] summary::after{content:"−";}
.faq-body{padding:0 24px 24px;color:var(--muted);font-size:15.5px;}
.faq-body p + p{margin-top:12px;}

/* ---------- 下载 CTA ---------- */
.cta-band{
  margin:88px 0;
  background:var(--ink);
  border-radius:var(--r-lg);
  padding:52px 48px;
  display:grid;grid-template-columns:1.45fr 1fr;gap:36px;align-items:center;
  color:#fff;
}
.cta-band h2{font-size:clamp(24px,2.4vw,32px);font-weight:800;letter-spacing:-.015em;line-height:1.3;}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.68);font-size:15.5px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-actions .rl-btn{justify-content:center;}
.cta-note{margin-top:20px;font-size:12.5px;letter-spacing:.04em;color:rgba(255,255,255,.45);font-variant-numeric:tabular-nums;}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:rgba(255,255,255,.7);padding:68px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;}
.footer .brand{font-size:19px;}
.footer p{margin-top:16px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px;}
.footer h3{font-size:14px;font-weight:700;letter-spacing:.06em;color:#fff;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.6);transition:color .22s var(--ease);width:fit-content;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);font-variant-numeric:tabular-nums;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s var(--ease),transform .26s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .check-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  body{padding-left:0;padding-top:64px;}
  .side-header{
    position:fixed;top:0;left:0;right:0;
    width:auto;height:64px;
    background:var(--paper);
    border-right:0;border-bottom:1px solid var(--line);
    padding:0 18px;
    flex-direction:row;align-items:center;justify-content:space-between;
  }
  .side-top{display:flex;align-items:center;justify-content:space-between;width:100%;}
  .side-header .brand{color:var(--ink);font-size:18px;}
  .side-header .brand span{color:var(--green);}
  .side-nav,.side-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .page-head{padding:48px 0 40px;}
  .page-head::after{display:none;}
  .section{padding:64px 0;}
  .overview{grid-template-columns:1fr;gap:18px;}
  .ov-card:nth-child(even){margin-top:0;}
  .figure-band img{height:260px;}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  .wrap{padding:0 18px;}
  .section{padding:56px 0;}
  .lede{font-size:15.5px;}
  .tl-item{padding-left:56px;}
  .tl-dot{width:36px;height:36px;font-size:12px;}
  .timeline::before{left:17px;}
  .tl-card{padding:22px 20px;}
  .check-grid{grid-template-columns:1fr;}
  .quote-block{padding:24px 22px;}
  .faq-item summary{font-size:16.5px;padding:18px 18px;}
  .faq-body{padding:0 18px 20px;}
  .cta-band{margin:64px 0;padding:34px 24px;}
  .cta-actions .rl-btn{width:100%;}
  .figure-band img{height:200px;}
  .footer{padding:56px 0 26px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}