/* roulang page: index */
:root{
  --ink:#14181A;
  --primary:#0E3B32;
  --primary-deep:#0A2B25;
  --accent:#E2542C;
  --accent-soft:#FBEDE7;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --muted:#6B6F6A;
  --lime:#C9E265;
  --radius-card:16px;
  --radius-img:20px;
  --radius-input:12px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 18px 40px -18px rgba(14,59,50,.28);
  --container:1200px;
  --section-gap:clamp(64px,9vw,128px);
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.01em;color:var(--ink);}
h1{font-size:clamp(2.2rem,5.4vw,4.2rem);line-height:1.08;letter-spacing:-0.02em;}
h2{font-size:clamp(1.75rem,3.4vw,2.6rem);line-height:1.2;}
h3{font-size:clamp(1.15rem,1.6vw,1.45rem);line-height:1.35;font-weight:700;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:var(--accent-soft);color:var(--primary-deep);}

.site-container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--section-gap) 0;}
.section-head{margin-bottom:clamp(32px,4vw,52px);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);font-weight:500;margin-bottom:16px;
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--accent);display:block;}
.section-head h2{max-width:820px;}
.section-head .lead{margin-top:16px;color:var(--muted);max-width:760px;font-size:16px;}

/* ============ 按钮 ============ */
.hbtn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.hbtn-primary{background:var(--primary);color:#fff;}
.hbtn-primary:hover{background:#0b312a;color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(14,59,50,.7);}
.hbtn-outline{background:transparent;color:var(--primary);border-color:var(--primary);}
.hbtn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px);}
.hbtn-accent{background:var(--accent);color:#fff;}
.hbtn-accent:hover{background:#c9481f;color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(226,84,44,.75);}
.hbtn-light{background:#fff;color:var(--primary);}
.hbtn-light:hover{background:#f1efe7;color:var(--primary);transform:translateY(-2px);}
.hbtn-ghost-light{background:transparent;color:#F6F3EC;border-color:rgba(246,243,236,.45);}
.hbtn-ghost-light:hover{background:rgba(246,243,236,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.hbtn:active{transform:translateY(0);}
.hbtn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ============ 徽章 ============ */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:500;
  background:var(--bg);color:var(--primary);border:1px solid var(--line);
}
.badge-accent{background:var(--accent-soft);color:var(--accent);border-color:transparent;font-weight:700;}

/* ============ 头部 ============ */
.site-header{background:var(--bg);position:relative;z-index:1030;}
.topbar{border-bottom:1px solid var(--line);font-size:12.5px;color:var(--muted);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px;}
.topbar-right{display:flex;align-items:center;gap:14px;}
.topbar a{color:var(--muted);}
.topbar a:hover{color:var(--accent);}
.topbar .dot{width:3px;height:3px;border-radius:50%;background:var(--line);display:inline-block;}

.mainnav{border-bottom:1px solid var(--line);background:rgba(246,243,236,.96);backdrop-filter:blur(6px);}
.mainnav-inner{display:flex;align-items:center;gap:20px;height:84px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--primary);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;stroke:var(--lime);fill:none;stroke-width:1.6;}
.brand-text{font-size:19px;font-weight:800;color:var(--primary);letter-spacing:-0.01em;}
.brand-text small{display:block;font-size:10.5px;font-weight:500;color:var(--muted);letter-spacing:.16em;}

.nav-search{
  flex:1 1 auto;display:flex;align-items:center;gap:8px;
  width:clamp(300px,36vw,540px);max-width:540px;height:50px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:0 6px 0 18px;transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(14,59,50,.08);}
.nav-search svg{width:18px;height:18px;stroke:var(--muted);fill:none;stroke-width:1.6;flex-shrink:0;}
.nav-search input{
  flex:1;border:0;background:transparent;font-size:14.5px;color:var(--ink);height:100%;
  outline:none;min-width:0;
}
.nav-search input::placeholder{color:#9a9d97;}
.nav-search button{
  height:38px;padding:0 18px;border:0;border-radius:999px;background:var(--accent);color:#fff;
  font-size:14px;font-weight:700;cursor:pointer;transition:background-color .2s ease;
}
.nav-search button:hover{background:#c9481f;}

.nav-links{display:flex;align-items:center;gap:4px;flex-shrink:0;}
.nav-links a{
  padding:8px 14px;border-radius:999px;font-size:14.5px;font-weight:500;color:var(--ink);
  transition:background-color .2s ease,color .2s ease;
}
.nav-links a:hover{background:var(--surface);color:var(--primary);}
.nav-links a.active{background:var(--primary);color:#fff;font-weight:700;}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--primary);fill:none;stroke-width:1.8;}

.mobile-drawer{
  display:none;border-bottom:1px solid var(--line);background:var(--surface);
  padding:18px 0 22px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer .m-search{margin-bottom:16px;}
.mobile-drawer .m-links{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.mobile-drawer .m-links a{
  padding:12px 14px;border:1px solid var(--line);border-radius:12px;font-size:14.5px;
  font-weight:500;color:var(--ink);background:var(--bg);
}
.mobile-drawer .m-links a.active{background:var(--primary);color:#fff;border-color:var(--primary);}

/* ============ 锚点条 ============ */
.anchor-bar{
  position:sticky;top:0;z-index:1020;
  background:rgba(255,255,255,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;align-items:center;gap:6px;height:58px;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  position:relative;padding:8px 14px;font-size:14px;font-weight:500;color:var(--muted);white-space:nowrap;
  border-radius:999px;transition:color .2s ease,background-color .2s ease;
}
.anchor-inner a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.anchor-inner a:hover{color:var(--primary);}
.anchor-inner a.active{color:var(--primary);font-weight:700;}
.anchor-inner a.active::after{transform:scaleX(1);}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:clamp(48px,7vw,88px) 0 clamp(56px,7vw,96px);
  background:
    linear-gradient(180deg,rgba(246,243,236,0) 60%,rgba(246,243,236,1) 100%),
    repeating-linear-gradient(90deg,rgba(14,59,50,.055) 0 1px,transparent 1px 76px),
    repeating-linear-gradient(0deg,rgba(14,59,50,.055) 0 1px,transparent 1px 76px),
    var(--bg);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,64px);align-items:center;}
.hero h1 span{display:block;}
.hero h1 .line-2{
  font-size:clamp(1.45rem,3.1vw,2.35rem);font-weight:700;line-height:1.25;
  color:var(--primary);margin-top:14px;letter-spacing:-0.01em;
}
.hero-sub{margin-top:22px;font-size:17px;color:var(--muted);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.hero-stats strong{display:block;font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:800;color:var(--primary);line-height:1.1;}
.hero-stats strong em{font-style:normal;font-size:.62em;font-weight:700;color:var(--accent);margin-left:2px;}
.hero-stats span{display:block;font-size:13px;color:var(--muted);margin-top:6px;}

.hero-media{position:relative;}
.hero-media .ratio{
  position:relative;aspect-ratio:4/3;border-radius:var(--radius-img);overflow:hidden;
  box-shadow:0 30px 60px -34px rgba(10,43,37,.55);
}
.hero-media .ratio img{width:100%;height:100%;object-fit:cover;}
.hero-media .float-card{
  position:absolute;right:-10px;bottom:-26px;width:min(250px,70%);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:12px;box-shadow:var(--shadow-2);
}
.hero-media .float-card img{border-radius:12px;aspect-ratio:16/10;object-fit:cover;margin-bottom:10px;}
.hero-media .float-card b{display:block;font-size:14px;color:var(--ink);line-height:1.5;}
.hero-media .float-card small{display:block;font-size:12.5px;color:var(--muted);margin-top:4px;}

/* ============ Bento 卖点 ============ */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;}
.bento-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:clamp(22px,2.4vw,30px);box-shadow:var(--shadow-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.bento-card:hover{transform:translateY(-4px);border-color:rgba(14,59,50,.3);box-shadow:var(--shadow-2);}
.bento-card .ico{
  width:46px;height:46px;border-radius:13px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.bento-card .ico svg{width:22px;height:22px;stroke:var(--accent);fill:none;stroke-width:1.5;}
.bento-card h3{margin-bottom:10px;}
.bento-card p{color:var(--muted);font-size:15px;}
.bento-lg{grid-column:span 3;grid-row:span 2;display:flex;flex-direction:column;}
.bento-lg .thumb{
  margin-top:auto;border-radius:var(--radius-img);overflow:hidden;aspect-ratio:16/9;
  border:1px solid var(--line);
}
.bento-lg .thumb img{width:100%;height:100%;object-fit:cover;}
.bento-md{grid-column:span 3;}
.bento-sm{grid-column:span 3;}
.bento-list{display:grid;gap:8px;margin-top:16px;}
.bento-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);}
.bento-list li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--lime);margin-top:10px;flex-shrink:0;}

/* ============ 演示区 ============ */
.step-block{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px);align-items:center;}
.step-block + .step-block{margin-top:clamp(48px,6vw,92px);}
.step-block.reverse .step-media{order:2;}
.step-num{
  font-size:clamp(48px,6vw,72px);font-weight:800;color:rgba(14,59,50,.12);
  line-height:1;letter-spacing:-0.03em;margin-bottom:8px;
}
.step-block h3{font-size:clamp(1.35rem,2.2vw,1.85rem);margin-bottom:14px;}
.step-block p{color:var(--muted);}
.step-points{margin-top:22px;display:grid;gap:12px;}
.step-points li{display:flex;gap:12px;font-size:15px;align-items:flex-start;}
.step-points li svg{width:18px;height:18px;stroke:var(--primary);fill:none;stroke-width:2;flex-shrink:0;margin-top:6px;}
.step-media{border-radius:var(--radius-img);overflow:hidden;aspect-ratio:4/3;border:1px solid var(--line);background:var(--surface);}
.step-media img{width:100%;height:100%;object-fit:cover;}

/* ============ 证据区 ============ */
.proof{background:var(--primary);color:#EDEAE1;border-radius:0;}
.proof .eyebrow{color:rgba(237,234,225,.7);}
.proof .section-head h2{color:#fff;}
.proof .section-head .lead{color:rgba(237,234,225,.75);}
.proof-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.proof-stat{border-top:2px solid var(--lime);padding-top:20px;}
.proof-stat strong{display:block;font-size:clamp(1.8rem,3.4vw,2.7rem);font-weight:800;color:#fff;line-height:1.1;}
.proof-stat strong em{font-style:normal;font-size:.5em;color:var(--lime);margin-left:4px;}
.proof-stat span{display:block;margin-top:8px;font-size:14px;color:rgba(237,234,225,.72);}
.partner-grid{
  margin-top:56px;display:grid;grid-template-columns:repeat(5,1fr);gap:12px;
}
.partner-grid span{
  border:1px solid rgba(237,234,225,.22);border-radius:12px;padding:16px 12px;
  text-align:center;font-size:14px;color:rgba(237,234,225,.86);background:rgba(255,255,255,.04);
}

/* ============ 价格区 ============ */
.price-grid{display:grid;grid-template-columns:.85fr 1.15fr .85fr;gap:24px;align-items:start;}
.price-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 24px;box-shadow:var(--shadow-1);
}
.price-card h3{font-size:1.25rem;margin-bottom:6px;}
.price-card .price{font-size:clamp(1.6rem,2.6vw,2.1rem);font-weight:800;color:var(--primary);margin:14px 0 4px;line-height:1.15;}
.price-card .price small{display:block;font-size:13px;font-weight:500;color:var(--muted);margin-top:6px;}
.price-card .desc{font-size:14.5px;color:var(--muted);margin-bottom:18px;}
.price-card ul{display:grid;gap:10px;margin-bottom:24px;}
.price-card li{display:flex;gap:10px;font-size:14.5px;color:var(--ink);}
.price-card li svg{width:17px;height:17px;stroke:var(--primary);fill:none;stroke-width:2.2;flex-shrink:0;margin-top:6px;}
.price-card li.off{color:#a8aca6;}
.price-card li.off svg{stroke:#c6c9c3;}
.price-feature{
  background:var(--primary);color:#EDEAE1;border-color:var(--primary);
  box-shadow:0 26px 54px -28px rgba(10,43,37,.68);padding:34px 30px;position:relative;
}
.price-feature h3,.price-feature .price{color:#fff;}
.price-feature .price small,.price-feature .desc{color:rgba(237,234,225,.75);}
.price-feature li{color:rgba(237,234,225,.94);}
.price-feature li svg{stroke:var(--lime);}
.price-feature li.off{color:rgba(237,234,225,.45);}
.price-feature li.off svg{stroke:rgba(237,234,225,.4);}
.price-feature .tag-rec{
  position:absolute;top:-13px;left:30px;background:var(--accent);color:#fff;
  font-size:12.5px;font-weight:700;padding:5px 14px;border-radius:999px;
}

/* ============ 最新信息 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(14,59,50,.3);box-shadow:var(--shadow-2);}
.news-card .cover{aspect-ratio:16/9;overflow:hidden;background:var(--bg);}
.news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
.news-card:hover .cover img{transform:scale(1.03);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-card h3{font-size:1.06rem;line-height:1.45;}
.news-card h3 a{color:var(--ink);}
.news-card h3 a:hover{color:var(--accent);}
.news-card .excerpt{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:auto;font-size:13px;color:var(--muted);}
.news-meta .sep{width:3px;height:3px;border-radius:50%;background:var(--line);}
.news-empty{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:44px 24px;text-align:center;color:var(--muted);font-size:15px;
}
.news-empty a{font-weight:700;margin-left:6px;}

/* ============ FAQ ============ */
.faq-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
.faq-group{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:8px 22px;box-shadow:var(--shadow-1);}
.faq-group .group-title{
  font-size:13px;letter-spacing:.16em;color:var(--muted);font-weight:500;
  padding:18px 0 10px;border-bottom:1px solid var(--line);text-transform:uppercase;
}
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.accordion-item:last-child{border-bottom:0;}
.accordion-button{
  background:transparent;color:var(--ink);font-size:15.5px;font-weight:700;
  padding:18px 44px 18px 0;box-shadow:none;border-radius:0;line-height:1.55;
}
.accordion-button:not(.collapsed){color:var(--primary);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  width:18px;height:18px;background-size:18px;flex-shrink:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230E3B32' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
  transition:transform .22s ease;
}
.accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23E2542C' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
  transform:rotate(45deg);
}
.accordion-body{padding:0 24px 22px 0;font-size:15px;color:var(--muted);line-height:1.85;}

/* ============ CTA ============ */
.cta-block{
  background:var(--primary-deep);border-radius:var(--radius-img);color:#EDEAE1;
  padding:clamp(38px,5vw,64px);display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-block::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,226,101,.16),transparent 68%);
}
.cta-block h2{color:#fff;font-size:clamp(1.6rem,3vw,2.3rem);}
.cta-block p{color:rgba(237,234,225,.78);margin-top:16px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;position:relative;z-index:1;}

/* ============ 页脚 ============ */
.site-footer{background:var(--primary-deep);color:rgba(237,234,225,.8);margin-top:var(--section-gap);padding:clamp(48px,6vw,76px) 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-text small{color:rgba(237,234,225,.6);}
.footer-brand p{font-size:14px;color:rgba(237,234,225,.7);margin-top:18px;max-width:300px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-tags span{
  font-size:12.5px;padding:5px 11px;border-radius:999px;
  border:1px solid rgba(237,234,225,.24);color:rgba(237,234,225,.8);
}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700;}
.site-footer ul{display:grid;gap:11px;}
.site-footer ul a{font-size:14px;color:rgba(237,234,225,.72);}
.site-footer ul a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:clamp(36px,5vw,56px);border-top:1px solid rgba(237,234,225,.16);
  padding:20px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12.5px;color:rgba(237,234,225,.55);
}

/* ============ 浮动 CTA / 返回顶部 ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1050;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 24px;
  border-radius:999px;background:var(--accent);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 18px 36px -16px rgba(226,84,44,.8);
  transition:transform .2s ease,opacity .3s ease,background-color .2s ease;
}
.float-cta:hover{background:#c9481f;color:#fff;transform:translateY(-2px);}
.float-cta svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.8;}
.float-cta.hide{opacity:0;pointer-events:none;transform:translateY(10px);}
.to-top{
  position:fixed;right:36px;bottom:96px;z-index:1040;width:42px;height:42px;border-radius:50%;
  background:var(--surface);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s ease,transform .2s ease;
  box-shadow:var(--shadow-1);
}
.to-top svg{width:18px;height:18px;stroke:var(--primary);fill:none;stroke-width:2;}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-2px);border-color:var(--primary);}
.mobile-cta-bar{display:none;}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none!important;}
}

/* ============ 响应式 ============ */
@media (max-width:1240px){
  .mainnav-inner{gap:14px;}
  .nav-search{width:clamp(240px,30vw,420px);}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-media{order:-1;}
  .hero-media .float-card{right:12px;bottom:-20px;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-lg,.bento-md,.bento-sm{grid-column:span 1;grid-row:auto;}
  .bento-lg{grid-column:span 2;}
  .proof-stats{grid-template-columns:repeat(2,1fr);}
  .partner-grid{grid-template-columns:repeat(3,1fr);}
  .price-grid{grid-template-columns:1fr;}
  .price-feature{order:-1;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-cols{grid-template-columns:1fr;}
  .cta-block{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:992px){
  .nav-search{display:none;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .mainnav-inner{height:72px;}
  .step-block{grid-template-columns:1fr;}
  .step-block.reverse .step-media{order:0;}
  .step-media{order:-1;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .site-container{padding:0 16px;}
  .topbar-inner{height:auto;padding:8px 0;flex-wrap:wrap;gap:6px;}
  .topbar-right span.hide-sm{display:none;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:16px;}
  .news-grid{grid-template-columns:1fr;}
  .partner-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .float-cta{display:none;}
  .to-top{right:20px;bottom:88px;}
  .mobile-cta-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1050;
    background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
    border-top:1px solid var(--line);padding:10px 16px;gap:10px;
  }
  .mobile-cta-bar .hbtn{flex:1;height:46px;font-size:15px;}
  .site-footer{padding-bottom:70px;}
}
@media (max-width:520px){
  .bento{grid-template-columns:1fr;}
  .bento-lg{grid-column:span 1;}
  .proof-stats{grid-template-columns:1fr;}
  .hero-actions .hbtn{width:100%;}
  .mobile-drawer .m-links{grid-template-columns:1fr;}
}

/* roulang page: article */
:root{
  --ink:#14181A;
  --primary:#0E3B32;
  --primary-deep:#0A2B25;
  --accent:#E2542C;
  --accent-soft:#FBEDE7;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --muted:#6B6F6A;
  --lime:#C9E265;
  --radius-card:16px;
  --radius-img:20px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 18px 40px -18px rgba(14,59,50,.28);
  --container:1200px;
  --space-section:clamp(64px,9vw,128px);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-feature-settings:"tnum" 1;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

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

/* ---------- 按钮 ---------- */
.hbtn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out;
}
.hbtn:hover{transform:translateY(-2px)}
.hbtn:active{transform:none}
.hbtn-sm{height:42px;padding:0 20px;font-size:14px}
.hbtn-primary{background:var(--primary);color:#FFFFFF}
.hbtn-primary:hover{background:#0B312A;box-shadow:0 12px 26px -14px rgba(14,59,50,.7)}
.hbtn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.hbtn-outline:hover{background:rgba(14,59,50,.07)}
.hbtn-accent{background:var(--accent);color:#FFFFFF}
.hbtn-accent:hover{background:#C9481F;box-shadow:0 12px 26px -14px rgba(226,84,44,.8)}
.hbtn-light{background:#F6F3EC;color:var(--primary)}
.hbtn-light:hover{background:#FFFFFF;box-shadow:0 12px 26px -14px rgba(0,0,0,.5)}
.hbtn[disabled]{opacity:.4;pointer-events:none}

/* ---------- 导航 ---------- */
.mainnav{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,243,236,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.mainnav-inner{
  display:flex;align-items:center;gap:clamp(10px,1.8vw,26px);
  padding:13px 24px;min-height:74px;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--primary);
  display:grid;place-items:center;flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:var(--lime);stroke-width:1.5;stroke-linejoin:round}
.brand-text{font-size:19px;font-weight:800;color:var(--primary);line-height:1.1;letter-spacing:-.02em}
.brand-text small{display:block;font-size:10px;font-weight:500;letter-spacing:.18em;color:var(--muted);margin-top:3px}
.nav-search{
  flex:1 1 auto;max-width:clamp(300px,36vw,540px);min-width:200px;
  display:flex;align-items:center;gap:10px;height:50px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:0 6px 0 18px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.nav-search svg{width:18px;height:18px;flex-shrink:0;fill:none;stroke:var(--muted);stroke-width:1.8;stroke-linecap:round}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;height:100%;font-size:15px;color:var(--ink)}
.nav-search input::placeholder{color:#A5A79F}
.nav-search button{
  height:38px;padding:0 20px;border:0;border-radius:var(--radius-pill);
  background:var(--accent);color:#FFFFFF;font-size:14px;cursor:pointer;
  transition:background-color .2s ease-out;
}
.nav-search button:hover{background:#C9481F}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(14,59,50,.08)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;padding:9px 13px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;color:#2A302E;
  transition:color .2s ease-out,background-color .2s ease-out;
}
.nav-links a:hover{color:var(--primary);background:rgba(14,59,50,.06)}
.nav-links a.active{color:var(--primary);font-weight:700}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:var(--accent);
}
.nav-cta{flex-shrink:0}
.nav-toggle{
  display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:var(--radius-input);
  background:var(--surface);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--primary);stroke-width:1.8}

/* ---------- 面包屑与文章头 ---------- */
.article-hero{padding:clamp(24px,4vw,44px) 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a{transition:color .2s ease-out}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.55}
.crumb .now{color:var(--ink);max-width:44ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{margin-top:22px;max-width:920px}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:var(--radius-pill);
  background:var(--accent-soft);color:var(--accent);font-size:13px;font-weight:500;
}
.article-title{
  font-size:clamp(1.9rem,4.2vw,3.2rem);line-height:1.16;letter-spacing:-.02em;
  font-weight:800;color:var(--ink);margin:18px 0 20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  padding-bottom:20px;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.article-meta time{font-weight:500;color:#3A4240}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 286px;gap:clamp(32px,4vw,56px);
  align-items:start;margin-top:clamp(32px,5vw,56px);
}
.article-main{min-width:0}
.article-body{max-width:820px;font-size:17.5px;line-height:1.85;color:#1C2220}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;margin:2.2em 0 .9em;padding-left:16px;
  font-size:clamp(1.35rem,2.2vw,1.72rem);line-height:1.3;font-weight:700;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:2px;background:var(--accent);
}
.article-body h3{
  position:relative;margin:1.9em 0 .7em;padding-left:18px;
  font-size:1.2rem;line-height:1.4;font-weight:700;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;
  border-radius:2px;background:var(--primary);
}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.4em}
.article-body li{margin-bottom:.5em}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(14,59,50,.32);transition:color .2s ease-out,border-color .2s ease-out}
.article-body a:hover{color:var(--accent);border-color:var(--accent)}
.article-body img{border-radius:var(--radius-img);margin:1.7em 0;box-shadow:var(--shadow-1)}
.article-body figure{margin:1.7em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:-.6em}
.article-body blockquote{
  margin:1.7em 0;padding:18px 24px;background:var(--surface);
  border-left:3px solid var(--accent);border-radius:0 12px 12px 0;color:#3A4240;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.table-wrap{overflow-x:auto;margin:1.7em 0;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.article-body table{width:100%;min-width:520px;border-collapse:collapse}
.article-body th{
  background:var(--primary);color:#F6F3EC;font-weight:500;text-align:left;
  padding:12px 18px;font-size:14px;white-space:nowrap;
}
.article-body td{padding:12px 18px;border-top:1px solid var(--line);font-size:15px;color:#2A302E}
.article-body tr:nth-child(even) td{background:#FBFAF6}
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:clamp(28px,4vw,48px);box-shadow:var(--shadow-1);
}
.empty-state h2{margin:0 0 12px;padding-left:0;font-size:1.5rem}
.empty-state h2::before{display:none}
.empty-state p{color:var(--muted);margin:0 0 24px}

/* ---------- 侧栏目录 ---------- */
.article-side{position:relative}
.toc-card{
  position:sticky;top:104px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.toc-card h3{
  font-size:13px;font-weight:500;letter-spacing:.12em;color:var(--muted);
  margin:0 0 14px;
}
.toc-list{display:flex;flex-direction:column;max-height:56vh;overflow-y:auto}
.toc-list a{
  display:block;padding:8px 4px 8px 13px;border-left:2px solid var(--line);
  font-size:14px;line-height:1.5;color:var(--muted);
  transition:color .2s ease-out,border-color .2s ease-out,padding-left .2s ease-out;
}
.toc-list a:hover{color:var(--primary);border-left-color:var(--primary)}
.toc-list a.toc-sub-link{padding-left:26px;font-size:13px}
.toc-list a.active{color:var(--primary);font-weight:500;border-left-color:var(--accent)}
.toc-tip{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);line-height:1.7;
}
.toc-tip a{color:var(--primary);font-weight:500}

/* ---------- 标签 / 栏目导航 ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:44px 0 0;padding-top:26px;border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:13px;color:var(--muted);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;padding:6px 15px;border-radius:var(--radius-pill);
  background:#FFFFFF;border:1px solid var(--line);color:var(--primary);font-size:13px;
  transition:border-color .2s ease-out,transform .2s ease-out,color .2s ease-out;
}
.tag:hover{border-color:rgba(14,59,50,.35);color:var(--accent);transform:translateY(-2px)}
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px}
.post-nav a{
  display:block;padding:20px 24px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.post-nav a:hover{transform:translateY(-4px);border-color:rgba(14,59,50,.3);box-shadow:var(--shadow-2)}
.post-nav .pn-label{display:block;font-size:12px;letter-spacing:.1em;color:var(--muted);margin-bottom:8px}
.post-nav .pn-title{display:block;font-size:16px;font-weight:500;color:var(--ink);line-height:1.5}
.post-nav a:hover .pn-title{color:var(--primary)}
.back-row{margin-top:26px;text-align:center}

/* ---------- 相关推荐 ---------- */
.section{margin-top:var(--space-section)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px}
.sec-title{
  position:relative;padding-left:18px;
  font-size:clamp(1.4rem,2.4vw,1.95rem);line-height:1.25;font-weight:700;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:2px;background:var(--accent);
}
.sec-sub{margin:10px 0 0;font-size:15px;color:var(--muted);max-width:60ch}
.sec-more{font-size:14px;font-weight:500;color:var(--primary);border-bottom:1px solid rgba(14,59,50,.3)}
.sec-more:hover{color:var(--accent);border-color:var(--accent)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.card:hover{transform:translateY(-4px);border-color:rgba(14,59,50,.3);box-shadow:var(--shadow-2)}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:#E9E4D8}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease-out}
.card:hover .card-cover img{transform:scale(1.04)}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-badge{
  align-self:flex-start;padding:4px 12px;border-radius:var(--radius-pill);
  background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:500;
}
.card-title{font-size:17px;font-weight:700;line-height:1.45;color:var(--ink)}
.card-text{font-size:14px;color:var(--muted);line-height:1.7;margin:0}
.card-foot{margin-top:auto;padding-top:12px;font-size:13px;color:var(--muted);display:flex;align-items:center;gap:10px}
.card-foot .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  background:var(--primary-deep);color:#F6F3EC;border-radius:24px;
  padding:clamp(32px,5vw,58px);
  display:grid;grid-template-columns:minmax(0,1.5fr) auto;gap:34px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;
  border-radius:50%;border:1px solid rgba(201,226,101,.22);
}
.cta-band h2{font-size:clamp(1.5rem,3vw,2.15rem);line-height:1.25;color:#FFFFFF}
.cta-band p{margin:14px 0 0;font-size:15.5px;color:rgba(246,243,236,.76);max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:1020;
  width:44px;height:44px;border-radius:50%;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-1);
  display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity .25s ease-out,transform .2s ease-out,visibility .25s;
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-3px);border-color:rgba(14,59,50,.3)}
.back-top svg{width:18px;height:18px;fill:none;stroke:var(--primary);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--space-section);background:var(--primary-deep);color:rgba(246,243,236,.8);
  padding:clamp(48px,7vw,88px) 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:clamp(28px,4vw,48px)}
.footer-brand .brand-text{color:#FFFFFF}
.footer-brand .brand-text small{color:rgba(246,243,236,.55)}
.footer-brand .brand-mark{background:rgba(246,243,236,.1)}
.footer-brand p{margin:18px 0 20px;font-size:14.5px;line-height:1.8;color:rgba(246,243,236,.72);max-width:38ch}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{
  padding:4px 12px;border-radius:var(--radius-pill);
  border:1px solid rgba(246,243,236,.22);font-size:12.5px;color:rgba(246,243,236,.8);
}
.site-footer h4{font-size:15px;font-weight:500;color:#FFFFFF;margin:0 0 18px}
.site-footer ul{list-style:none;padding:0}
.site-footer li{margin-bottom:11px;font-size:14.5px}
.site-footer a{color:rgba(246,243,236,.78);transition:color .2s ease-out}
.site-footer a:hover{color:var(--lime)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:clamp(36px,5vw,56px);padding:20px 0;
  border-top:1px solid rgba(246,243,236,.16);
  font-size:13px;color:rgba(246,243,236,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{display:none}
  .article-body{max-width:none}
}
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:992px){
  .mainnav-inner{padding:12px 24px;gap:12px}
  .nav-search{order:3;flex-basis:100%;max-width:none;margin-top:4px}
  .nav-links{
    order:4;flex-basis:100%;display:none;flex-direction:column;align-items:stretch;
    gap:0;margin:6px 0 0;padding:4px 0 8px;border-top:1px solid var(--line);
  }
  .mainnav.nav-open .nav-links{display:flex}
  .nav-links a{padding:13px 4px;border-radius:0;border-bottom:1px solid var(--line)}
  .nav-links a.active::after{display:none}
  .nav-links a.active{color:var(--accent)}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .cta-band{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:768px){
  .site-container{padding:0 18px}
  body{font-size:16.5px}
  .article-body{font-size:17px}
  .brand-text{font-size:17px}
  .brand-text small{letter-spacing:.12em}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .crumb .now{max-width:26ch}
}
@media (max-width:520px){
  .site-container{padding:0 16px}
  .article-title{font-size:1.72rem}
  .nav-search button{padding:0 16px}
  .cta-actions .hbtn{width:100%}
  .back-top{right:16px;bottom:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
html{scroll-behavior:smooth}
.article-body h2,.article-body h3{scroll-margin-top:110px}

/* roulang page: category1 */
:root{
  --ink:#14181A;
  --primary:#0E3B32;
  --primary-deep:#0A2B25;
  --accent:#E2542C;
  --accent-soft:#FBEDE7;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --muted:#6B6F6A;
  --lime:#C9E265;
  --radius-card:16px;
  --radius-img:20px;
  --radius-input:12px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 18px 40px -18px rgba(14,59,50,.28);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:17px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
a:hover{color:var(--accent)}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit;font-size:inherit}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.site-container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num,.stat b,.flow .idx{font-variant-numeric:tabular-nums}

/* ---------- 顶部工具条 ---------- */
.topbar{background:var(--primary-deep);color:rgba(246,243,236,.72);font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;min-height:38px}
.topbar-list{display:flex;gap:20px;flex-wrap:wrap;align-items:center}
.topbar a:hover{color:var(--lime)}
.topbar .dot{width:6px;height:6px;border-radius:50%;background:var(--lime);display:inline-block;margin-right:7px;vertical-align:middle}

/* ---------- 主导航 ---------- */
.mainnav{
  position:sticky;top:0;z-index:80;
  background:rgba(246,243,236,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.mainnav-inner{display:flex;align-items:center;gap:18px;min-height:80px;padding-top:12px;padding-bottom:12px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--primary);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:#F6F3EC;stroke-width:1.5;stroke-linejoin:round;stroke-linecap:round}
.brand-text{
  display:flex;flex-direction:column;line-height:1.12;font-weight:800;font-size:17px;
  color:var(--primary);letter-spacing:.01em;
}
.brand-text small{font-size:10px;font-weight:500;color:var(--muted);letter-spacing:.16em;margin-top:2px}
.nav-search{
  flex:1 1 auto;display:flex;align-items:center;gap:10px;
  width:clamp(280px,34vw,540px);max-width:540px;min-width:200px;height:50px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:0 6px 0 16px;transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(14,59,50,.08)}
.nav-search>svg{width:18px;height:18px;fill:none;stroke:var(--muted);stroke-width:1.6;stroke-linecap:round;flex:0 0 auto}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;border:0;outline:none;background:transparent;
  font-size:14.5px;color:var(--ink);
}
.nav-search input::placeholder{color:#9AA09A}
.nav-search button{
  flex:0 0 auto;height:38px;padding:0 18px;border:0;border-radius:999px;cursor:pointer;
  background:var(--accent);color:#fff;font-size:14px;font-weight:500;
  transition:background .2s ease,transform .2s ease;
}
.nav-search button:hover{background:#C9451F;transform:translateY(-1px)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;padding:10px 13px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:#3A423E;
}
.nav-links a:hover{color:var(--primary);background:rgba(14,59,50,.06)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:var(--accent);
}
.hbtn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:1px solid transparent;border-radius:999px;
  font-size:15px;font-weight:500;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.hbtn-primary{background:var(--primary);color:#fff}
.hbtn-primary:hover{background:#0B3029;color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px -12px rgba(14,59,50,.5)}
.hbtn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.hbtn-ghost:hover{background:rgba(14,59,50,.06);color:var(--primary);transform:translateY(-2px)}
.hbtn-accent{background:var(--accent);color:#fff}
.hbtn-accent:hover{background:#C9451F;color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px -12px rgba(226,84,44,.55)}
.hbtn-sm{height:42px;padding:0 20px;font-size:14px}
.nav-toggle,.nav-search-toggle{
  display:none;width:44px;height:44px;flex:0 0 auto;align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover,.nav-search-toggle:hover{border-color:var(--primary)}
.nav-toggle svg,.nav-search-toggle svg{width:20px;height:20px;fill:none;stroke:var(--primary);stroke-width:1.6;stroke-linecap:round}
.nav-search-toggle{margin-left:auto}
.nav-drawer{display:none;border-top:1px solid var(--line);background:var(--surface);padding:18px 0 24px}
.nav-drawer.open{display:block}
.nav-drawer .nav-search{width:100%;max-width:none;margin-bottom:16px}
.drawer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.drawer-links a{
  padding:12px 14px;border:1px solid var(--line);border-radius:12px;
  font-size:15px;font-weight:500;color:var(--primary);background:#FCFBF7;
}
.drawer-links a.active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.nav-drawer .hbtn{width:100%;margin-top:16px}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;color:#F6F3EC;padding:52px 0 58px;
  background-image:linear-gradient(rgba(10,43,37,.70),rgba(10,43,37,.78)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(246,243,236,.72);margin-bottom:20px}
.crumb a:hover{color:var(--lime)}
.crumb .sep{color:rgba(246,243,236,.42)}
.page-head h1{font-size:clamp(2rem,4.8vw,3.2rem);line-height:1.1;letter-spacing:-.02em;font-weight:800}
.page-head .lead{max-width:760px;margin-top:16px;font-size:16.5px;color:rgba(246,243,236,.86)}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.head-tags span{
  padding:7px 16px;border-radius:999px;font-size:13px;
  border:1px solid rgba(246,243,236,.36);color:rgba(246,243,236,.94);
  background:rgba(246,243,236,.06);
}

/* ---------- 主体布局 ---------- */
.page-body{padding:clamp(44px,6vw,84px) 0 clamp(64px,8vw,110px)}
.layout{display:grid;grid-template-columns:252px minmax(0,1fr);gap:56px;align-items:start}
.side-nav{position:sticky;top:104px}
.side-nav h2{
  font-size:12px;letter-spacing:.18em;font-weight:500;color:var(--muted);
  margin-bottom:16px;text-transform:uppercase;
}
.side-nav ul{list-style:none;border-left:1px solid var(--line);display:flex;flex-direction:column}
.side-nav a{
  display:block;padding:10px 0 10px 18px;margin-left:-1px;
  border-left:2px solid transparent;font-size:15px;color:#3A423E;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.side-nav a:hover{color:var(--accent);background:linear-gradient(90deg,rgba(226,84,44,.08),transparent)}
.side-nav a.active{color:var(--accent);border-left-color:var(--accent);background:linear-gradient(90deg,rgba(226,84,44,.1),transparent)}
.side-cta{
  margin-top:30px;padding:20px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);box-shadow:var(--shadow-1);
}
.side-cta h3{font-size:15.5px;color:var(--primary);margin-bottom:8px}
.side-cta p{font-size:13.5px;color:var(--muted);line-height:1.75}
.side-cta a{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:14px;font-weight:500;color:var(--accent);
}
.side-cta a:hover{color:#C9451F}

/* ---------- 内容面板 ---------- */
.content-stack{display:flex;flex-direction:column;gap:26px}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:clamp(22px,3vw,40px);box-shadow:var(--shadow-1);
  scroll-margin-top:108px;
}
.panel-label{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.14em;color:var(--accent);font-weight:500;margin-bottom:12px;
}
.panel-label::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent)}
.panel h2{
  position:relative;padding-left:18px;margin-bottom:14px;
  font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.26;color:var(--primary);
}
.panel h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:2px;background:var(--accent);
}
.panel-intro{font-size:16px;color:#3A423E;max-width:820px}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;margin-top:30px}
.split+.split{margin-top:38px;padding-top:38px;border-top:1px solid var(--line)}
.split.reverse .split-media{order:2}
.split-media{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:#EAE5D9;
}
.split-media img{width:100%;height:100%;object-fit:cover}
.step-tag{display:flex;align-items:baseline;gap:10px;margin-bottom:10px}
.step-tag b{font-size:26px;font-weight:800;color:rgba(14,59,50,.18);letter-spacing:.02em}
.step-tag span{font-size:13px;color:var(--muted);letter-spacing:.08em}
.split h3{font-size:1.2rem;color:var(--primary);margin-bottom:12px}
.split p{font-size:15.5px;color:#3A423E}
.ticks{list-style:none;margin-top:18px;display:grid;gap:11px}
.ticks li{position:relative;padding-left:26px;font-size:15.5px;color:#3A423E}
.ticks li::before{
  content:"";position:absolute;left:0;top:.52em;width:12px;height:12px;border-radius:3px;
  background:var(--accent-soft);border:1.5px solid var(--accent);
}

/* ---------- 流程步骤 ---------- */
.flow{list-style:none;position:relative;margin-top:28px;padding-left:8px;display:grid;gap:24px}
.flow::before{content:"";position:absolute;left:33px;top:14px;bottom:14px;width:2px;background:var(--line)}
.flow li{position:relative;display:grid;grid-template-columns:52px minmax(0,1fr);gap:20px;align-items:start}
.flow .idx{
  position:relative;z-index:1;width:52px;height:52px;border-radius:16px;
  background:var(--primary);color:#F6F3EC;display:grid;place-items:center;
  font-weight:700;font-size:15px;letter-spacing:.02em;
}
.flow li.active .idx{background:var(--accent)}
.flow h3{font-size:1.06rem;color:var(--primary);margin-bottom:6px}
.flow p{font-size:15px;color:#3A423E}
.flow .meta{font-size:13px;color:var(--muted);margin-top:8px}

/* ---------- 场景卡片 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:28px}
.scene-card{
  background:#FCFBF7;border:1px solid var(--line);border-radius:14px;padding:22px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(14,59,50,.3);box-shadow:var(--shadow-2)}
.scene-icon{
  width:44px;height:44px;border-radius:12px;background:var(--primary);
  display:grid;place-items:center;margin-bottom:14px;
}
.scene-icon svg{width:22px;height:22px;fill:none;stroke:var(--lime);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.scene-card h3{font-size:1.02rem;color:var(--primary);margin-bottom:8px}
.scene-card p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:28px}
.stat{border-left:3px solid var(--accent);padding:4px 0 4px 16px}
.stat b{display:block;font-size:clamp(1.55rem,2.8vw,2.2rem);font-weight:800;color:var(--primary);line-height:1.1}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:var(--muted)}

/* ---------- 表格 ---------- */
.table-wrap{
  margin-top:26px;border:1px solid var(--line);border-radius:14px;overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
table.spec{width:100%;min-width:600px;border-collapse:collapse;font-size:15px}
table.spec thead th{
  background:var(--primary);color:#F6F3EC;font-weight:500;text-align:left;
  padding:14px 18px;font-size:14px;white-space:nowrap;
}
table.spec td{padding:14px 18px;border-top:1px solid var(--line);color:#3A423E;vertical-align:top}
table.spec tbody tr:nth-child(even){background:#FBF9F4}
table.spec td:first-child{color:var(--primary);font-weight:500}

/* ---------- FAQ ---------- */
.faq-list{margin-top:26px;display:grid;gap:12px}
.faq-item{
  border:1px solid var(--line);border-radius:14px;background:#FCFBF7;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:rgba(226,84,44,.5);box-shadow:0 12px 28px -20px rgba(226,84,44,.6)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 20px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:500;color:var(--primary);
}
.faq-q .mark{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);transition:transform .22s ease,border-color .22s ease;
}
.faq-q .mark::before,.faq-q .mark::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .mark::before{width:12px;height:1.6px}
.faq-q .mark::after{width:1.6px;height:12px;transition:opacity .22s ease}
.faq-item.open .mark{transform:rotate(180deg);border-color:var(--accent)}
.faq-item.open .mark::after{opacity:0}
.faq-a{
  display:none;margin:0 20px 20px;padding-left:16px;border-left:3px solid var(--accent);
  font-size:15.5px;line-height:1.85;color:#3A423E;
}
.faq-item.open .faq-a{display:block}

/* ---------- CTA ---------- */
.cta-block{
  border-radius:20px;padding:clamp(28px,4vw,50px);
  background-image:linear-gradient(135deg,rgba(14,59,50,.96),rgba(10,43,37,.98)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;color:#F6F3EC;
  display:grid;grid-template-columns:1.35fr .95fr;gap:34px;align-items:center;
  scroll-margin-top:108px;
}
.cta-block h2{font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.24;margin-bottom:14px}
.cta-block p{font-size:15.5px;color:rgba(246,243,236,.86);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
.cta-block .hbtn-ghost{border-color:rgba(246,243,236,.6);color:#F6F3EC}
.cta-block .hbtn-ghost:hover{background:rgba(246,243,236,.12);color:#fff}
.cta-side{
  border:1px solid rgba(246,243,236,.24);border-radius:16px;padding:22px;
  background:rgba(246,243,236,.06);
}
.cta-side h3{font-size:15px;color:var(--lime);margin-bottom:14px;letter-spacing:.04em}
.cta-side dl{margin:0;display:grid;gap:14px}
.cta-side dt{font-size:13px;color:rgba(246,243,236,.66)}
.cta-side dd{margin:4px 0 0;font-size:15.5px;color:#F6F3EC}

/* ---------- 浮动与返回顶部 ---------- */
.float-area{position:fixed;right:24px;bottom:28px;z-index:70;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.float-cta{
  display:inline-flex;align-items:center;gap:9px;height:50px;padding:0 22px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:15px;font-weight:500;
  box-shadow:0 16px 32px -16px rgba(226,84,44,.75);
  transition:transform .2s ease,background .2s ease;
}
.float-cta:hover{background:#C9451F;color:#fff;transform:translateY(-2px)}
.float-cta svg{width:18px;height:18px;fill:none;stroke:#fff;stroke-width:1.6;stroke-linecap:round}
.to-top{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;cursor:pointer;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-1);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s ease,visibility .25s ease,transform .25s ease,border-color .2s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--primary)}
.to-top svg{width:18px;height:18px;fill:none;stroke:var(--primary);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary-deep);color:rgba(246,243,236,.78);padding:clamp(48px,6vw,74px) 0 0;margin-top:clamp(56px,7vw,96px)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:42px}
.site-footer .brand-text{color:#F6F3EC}
.site-footer .brand-text small{color:rgba(246,243,236,.55)}
.site-footer .brand-mark{background:rgba(246,243,236,.12)}
.footer-brand p{margin:16px 0 18px;max-width:330px;font-size:14.5px;line-height:1.85;color:rgba(246,243,236,.72)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{
  padding:5px 12px;border-radius:999px;font-size:12.5px;
  border:1px solid rgba(246,243,236,.24);color:rgba(246,243,236,.82);
}
.site-footer h4{font-size:15px;font-weight:500;color:#F6F3EC;margin-bottom:18px}
.site-footer ul{list-style:none;display:grid;gap:12px;font-size:14.5px}
.site-footer a:hover{color:var(--lime)}
.site-footer li span{color:rgba(246,243,236,.7)}
.footer-bottom{
  border-top:1px solid rgba(246,243,236,.16);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,243,236,.6);
}

/* ---------- 动效进场 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .layout{grid-template-columns:220px minmax(0,1fr);gap:40px}
}
@media (max-width:1100px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-search{margin-left:auto}
}
@media (max-width:992px){
  .page-head{padding:42px 0 46px}
  .layout{grid-template-columns:1fr;gap:26px}
  .side-nav{
    position:sticky;top:74px;z-index:40;
    background:rgba(246,243,236,.96);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
    padding:10px 0;border-bottom:1px solid var(--line);
  }
  .side-nav h2,.side-cta{display:none}
  .side-nav ul{flex-direction:row;overflow-x:auto;border-left:0;gap:8px;padding-bottom:4px}
  .side-nav a{
    margin:0;padding:8px 14px;white-space:nowrap;border:1px solid var(--line);
    border-radius:999px;background:var(--surface);font-size:14px;
  }
  .side-nav a.active{border-color:var(--accent);background:var(--accent-soft)}
  .split{grid-template-columns:1fr;gap:22px}
  .split.reverse .split-media{order:0}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-block{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
}
@media (max-width:768px){
  body{font-size:16.5px}
  .mainnav-inner{gap:12px;min-height:70px;padding-top:10px;padding-bottom:10px}
  .mainnav-inner>.nav-search{display:none}
  .nav-search-toggle{display:inline-flex;margin-left:auto}
  .nav-toggle{margin-left:0}
  .brand-text{font-size:16px}
  .brand-text small{font-size:9px}
  .topbar-inner{min-height:34px;font-size:12.5px}
  .topbar-list{gap:14px}
  .page-head h1{font-size:clamp(1.8rem,7vw,2.4rem)}
  .panel h2{padding-left:14px}
  .flow li{grid-template-columns:44px minmax(0,1fr);gap:16px}
  .flow .idx{width:44px;height:44px;border-radius:14px;font-size:14px}
  .flow::before{left:29px}
  .float-area{right:16px;bottom:18px}
  .float-cta{height:46px;padding:0 18px;font-size:14.5px}
}
@media (max-width:576px){
  .site-container{padding:0 16px}
  .scene-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .drawer-links{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:6px}
  .faq-q{font-size:15.5px;padding:16px 16px}
  .faq-a{margin:0 16px 16px}
  .float-cta span{display:none}
  .float-cta{width:52px;height:52px;padding:0;justify-content:center;border-radius:50%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category3 */
:root{
  --ink:#14181A;
  --primary:#0E3B32;
  --primary-deep:#0A2B25;
  --accent:#E2542C;
  --accent-soft:#FBEDE7;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --muted:#6B6F6A;
  --lime:#C9E265;
  --radius-card:16px;
  --radius-img:20px;
  --radius-input:12px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 18px 40px -18px rgba(14,59,50,.28);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4{font-weight:800;letter-spacing:-0.01em;color:var(--primary-deep);margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
time,.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.site-container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:clamp(48px,7vw,96px) 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:700;margin-bottom:14px;
}
.eyebrow::before{content:"";width:28px;height:3px;background:var(--accent);border-radius:2px}
.sec-title{font-size:clamp(1.6rem,3.2vw,2.3rem);line-height:1.22}
.sec-sub{color:var(--muted);font-size:15px;margin-top:12px;max-width:720px}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60}
.topbar{
  background:var(--primary-deep);color:rgba(246,243,236,.72);
  font-size:12.5px;letter-spacing:.02em;
}
.topbar .site-container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;flex-wrap:wrap}
.topbar a{color:rgba(246,243,236,.82)}
.topbar a:hover{color:var(--lime)}
.topbar-left{display:flex;gap:20px;flex-wrap:wrap}
.topbar-right{display:flex;gap:20px;flex-wrap:wrap}

.mainnav{
  background:rgba(246,243,236,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:padding .2s ease;
}
.mainnav-inner{display:flex;align-items:center;gap:18px;padding-top:14px;padding-bottom:14px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--primary);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:#F6F3EC;stroke-width:1.5;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font-weight:800;color:var(--primary-deep);font-size:17px;letter-spacing:-0.01em}
.brand-text small{font-size:10px;letter-spacing:.18em;color:var(--muted);font-weight:700}

.nav-search{
  flex:1 1 auto;max-width:560px;min-width:260px;
  display:flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:999px;padding:4px 6px 4px 16px;height:50px;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(14,59,50,.08)}
.nav-search svg{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:var(--muted);stroke-width:1.6;stroke-linecap:round}
.nav-search input{
  flex:1 1 auto;border:0;outline:none;background:transparent;
  font-size:14.5px;color:var(--ink);min-width:0;
}
.nav-search input::placeholder{color:#9B9F99}
.nav-search button{
  border:0;height:38px;padding:0 18px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:14px;font-weight:700;cursor:pointer;
  transition:background .2s ease,transform .2s ease;
}
.nav-search button:hover{background:#C8431F;transform:translateY(-1px)}

.nav-links{display:flex;align-items:center;gap:4px;flex:0 0 auto}
.nav-links a{
  position:relative;padding:9px 14px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:#3A423E;
}
.nav-links a:hover{background:rgba(14,59,50,.06);color:var(--primary)}
.nav-links a.active{color:var(--primary-deep);font-weight:700;background:rgba(14,59,50,.08)}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--accent);
}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;flex:0 0 auto;
  border:1px solid var(--line);background:var(--surface);border-radius:12px;
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--primary);stroke-width:1.7}

/* buttons */
.hbtn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.hbtn-sm{height:42px;padding:0 20px;font-size:14px}
.hbtn-primary{background:var(--primary);color:#fff}
.hbtn-primary:hover{background:#0B302A;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.hbtn-accent{background:var(--accent);color:#fff}
.hbtn-accent:hover{background:#C8431F;color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px -16px rgba(226,84,44,.6)}
.hbtn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.hbtn-ghost:hover{background:rgba(14,59,50,.06);color:var(--primary);transform:translateY(-2px)}
.hbtn:active{transform:translateY(0)}
.hbtn[disabled],.hbtn.is-disabled{opacity:.4;pointer-events:none}

/* ============ category hero ============ */
.cat-hero{
  position:relative;color:#F6F3EC;overflow:hidden;
  background:linear-gradient(120deg,rgba(10,43,37,.92),rgba(10,43,37,.72)),
             url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.cat-hero::after{
  content:"";position:absolute;inset:auto -10% -60% auto;width:520px;height:520px;
  border:1px solid rgba(201,226,101,.28);border-radius:50%;
}
.cat-hero-inner{position:relative;z-index:2;padding:clamp(48px,7vw,84px) 0 clamp(40px,6vw,64px)}
.breadcrumb-row{
  display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(246,243,236,.68);
  margin-bottom:22px;flex-wrap:wrap;
}
.breadcrumb-row a{color:rgba(246,243,236,.82)}
.breadcrumb-row a:hover{color:var(--lime)}
.breadcrumb-row .sep{opacity:.5}
.cat-hero h1{color:#fff;font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.1;letter-spacing:-0.02em}
.cat-hero .lede{
  margin-top:16px;font-size:clamp(1rem,1.6vw,1.12rem);color:rgba(246,243,236,.86);max-width:640px;
}
.cat-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.cat-tags span{
  border:1px solid rgba(246,243,236,.4);border-radius:999px;
  padding:6px 14px;font-size:13px;color:rgba(246,243,236,.92);
}
.cat-hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
  margin-top:38px;padding-top:28px;border-top:1px solid rgba(246,243,236,.2);
  max-width:760px;
}
.cat-hero-stats b{display:block;font-size:clamp(1.5rem,3vw,2rem);color:var(--lime);line-height:1.2}
.cat-hero-stats span{font-size:13px;color:rgba(246,243,236,.72)}

/* ============ layout ============ */
.layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:40px;align-items:start}
.side{position:sticky;top:112px;display:flex;flex-direction:column;gap:18px}
.side-nav{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:12px;box-shadow:var(--shadow-1)}
.side-nav h2{font-size:12px;letter-spacing:.16em;color:var(--muted);font-weight:700;padding:8px 12px 10px}
.side-nav a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:14.5px;color:#3A423E;font-weight:500;
}
.side-nav a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--line);transition:background .2s ease}
.side-nav a:hover{background:rgba(14,59,50,.05);color:var(--primary)}
.side-nav a:hover::before{background:var(--accent)}
.side-nav a.is-current{background:var(--accent-soft);color:var(--accent);font-weight:700}
.side-nav a.is-current::before{background:var(--accent)}
.side-card{
  background:var(--primary);color:rgba(246,243,236,.9);
  border-radius:var(--radius-card);padding:22px;
}
.side-card h3{color:#fff;font-size:16px;margin-bottom:8px}
.side-card p{font-size:13.5px;line-height:1.7;color:rgba(246,243,236,.76)}
.side-card .hbtn{margin-top:16px;width:100%;height:42px;font-size:14px}

.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:clamp(22px,3.2vw,34px);box-shadow:var(--shadow-1);margin-bottom:26px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.panel:hover{transform:translateY(-4px);border-color:rgba(14,59,50,.3);box-shadow:var(--shadow-2)}
.panel-head{display:flex;align-items:flex-start;gap:18px;margin-bottom:18px}
.panel-num{
  font-size:44px;font-weight:800;line-height:1;color:rgba(14,59,50,.12);
  font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.panel-head h2{font-size:clamp(1.25rem,2.4vw,1.6rem);line-height:1.25}
.panel-head p{color:var(--muted);font-size:14.5px;margin-top:8px}
[data-anchor]{scroll-margin-top:120px}

.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:8px}
.stat{
  border:1px solid var(--line);border-radius:14px;padding:18px 16px;background:#FCFAF6;
}
.stat b{display:block;font-size:clamp(1.4rem,2.6vw,1.85rem);color:var(--primary);line-height:1.15;font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:var(--muted);display:block;margin-top:6px}

/* timeline */
.timeline{position:relative;margin-top:10px;padding-left:26px}
.timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:var(--line)}
.tl-item{position:relative;padding:0 0 24px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:8px;width:14px;height:14px;border-radius:50%;
  background:var(--surface);border:2px solid var(--primary);
}
.tl-item.is-accent::before{border-color:var(--accent);background:var(--accent)}
.tl-item h3{font-size:16px;display:flex;align-items:baseline;gap:10px}
.tl-item h3 em{font-style:normal;font-size:12px;color:var(--accent);font-weight:700;letter-spacing:.08em}
.tl-item p{font-size:14.5px;color:var(--muted);margin-top:6px}

/* filters + notices */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 22px}
.chip{
  border:1px solid var(--line);background:#FCFAF6;color:#3A423E;
  border-radius:999px;padding:8px 16px;font-size:13.5px;font-weight:500;cursor:pointer;
  transition:all .2s ease;
}
.chip:hover{border-color:rgba(14,59,50,.4);color:var(--primary)}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:700}

.notice-list{display:flex;flex-direction:column;gap:12px}
.notice{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:18px;align-items:center;
  border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:#FCFAF6;
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.notice:hover{border-color:rgba(14,59,50,.32);background:#fff;transform:translateY(-2px)}
.notice-date{
  display:flex;flex-direction:column;line-height:1.1;padding-right:16px;
  border-right:1px solid var(--line);
}
.notice-date b{font-size:19px;color:var(--primary);font-weight:800}
.notice-date span{font-size:12px;color:var(--muted);margin-top:4px}
.notice-body h3{font-size:16px;line-height:1.45}
.notice-body p{font-size:13.5px;color:var(--muted);margin-top:5px}
.badge-soft{
  display:inline-flex;align-items:center;border-radius:999px;padding:5px 13px;
  font-size:12.5px;font-weight:700;white-space:nowrap;
  background:var(--bg);color:var(--primary);border:1px solid var(--line);
}
.badge-accent{background:var(--accent-soft);color:var(--accent);border-color:rgba(226,84,44,.24)}
.badge-lime{background:rgba(201,226,101,.28);color:#4B6113;border-color:rgba(201,226,101,.6)}
.notice-note{font-size:12.5px;color:var(--muted);margin-top:16px}

/* checklist */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.check-item{display:flex;gap:14px;border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:#FCFAF6}
.check-item i{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--accent-soft);
  color:var(--accent);font-style:normal;font-weight:800;font-size:13px;
  display:grid;place-items:center;
}
.check-item h3{font-size:15px}
.check-item p{font-size:13.5px;color:var(--muted);margin-top:5px}

/* faq */
.faq .accordion-item{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-bottom:12px;background:#FCFAF6;
}
.faq .accordion-button{
  background:#FCFAF6;color:var(--primary-deep);font-weight:700;font-size:15.5px;
  padding:18px 20px;box-shadow:none;border:0;border-left:3px solid transparent;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq .accordion-button:not(.collapsed){
  background:#fff;color:var(--primary);border-left-color:var(--accent);
}
.faq .accordion-button:focus{box-shadow:0 0 0 3px rgba(226,84,44,.14)}
.faq .accordion-button::after{display:none}
.faq .fi{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--primary);font-size:15px;line-height:1;
  transition:transform .22s ease,background .22s ease,color .22s ease;
}
.faq .accordion-button:not(.collapsed) .fi{transform:rotate(45deg);background:var(--accent);color:#fff;border-color:var(--accent)}
.faq .accordion-body{font-size:14.5px;color:#40463F;padding:0 20px 20px;background:#fff}

/* cta band */
.cta-band{
  background:linear-gradient(120deg,var(--primary-deep),var(--primary));
  border-radius:22px;color:#F6F3EC;padding:clamp(28px,4vw,48px);
  display:grid;grid-template-columns:minmax(0,1.4fr) auto;gap:28px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  border:1px solid rgba(201,226,101,.3);
}
.cta-band h2{color:#fff;font-size:clamp(1.35rem,2.6vw,1.9rem);position:relative}
.cta-band p{color:rgba(246,243,236,.8);font-size:14.5px;margin-top:10px;max-width:640px;position:relative}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}
.cta-band .hbtn-ghost{border-color:rgba(246,243,236,.5);color:#F6F3EC}
.cta-band .hbtn-ghost:hover{background:rgba(246,243,236,.12);color:#fff}

/* footer */
.site-footer{background:var(--primary-deep);color:rgba(246,243,236,.78);padding:clamp(44px,6vw,72px) 0 26px;margin-top:clamp(48px,7vw,90px)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.site-footer .brand-text{color:#F6F3EC}
.site-footer .brand-text small{color:rgba(246,243,236,.5)}
.site-footer .brand-mark{background:rgba(246,243,236,.12)}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;max-width:340px;color:rgba(246,243,236,.7)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-tags span{border:1px solid rgba(246,243,236,.28);border-radius:999px;padding:5px 12px;font-size:12.5px}
.site-footer h4{color:#F6F3EC;font-size:14.5px;letter-spacing:.04em;margin-bottom:16px}
.site-footer ul{display:flex;flex-direction:column;gap:11px}
.site-footer ul a,.site-footer ul span{font-size:13.8px;color:rgba(246,243,236,.74)}
.site-footer ul a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(246,243,236,.16);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(246,243,236,.55);
}

/* back to top */
.to-top{
  position:fixed;right:24px;bottom:26px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);color:var(--primary);
  display:grid;place-items:center;cursor:pointer;z-index:70;box-shadow:var(--shadow-1);
  opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:var(--shadow-2)}
.to-top svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease}
.reveal.in{opacity:1;transform:none}

/* ============ responsive ============ */
@media (max-width:1200px){
  .layout{grid-template-columns:220px minmax(0,1fr);gap:28px}
}
@media (max-width:992px){
  .nav-search{order:3;flex:1 1 100%;max-width:none;display:none;min-width:0}
  .mainnav.nav-open .nav-search{display:flex}
  .nav-links{
    order:4;flex:1 1 100%;display:none;grid-template-columns:repeat(2,minmax(0,1fr));
    gap:8px;padding:6px 0 4px;
  }
  .mainnav.nav-open .nav-links{display:grid}
  .nav-links a{padding:12px 14px;background:rgba(14,59,50,.05);border-radius:12px;text-align:left}
  .nav-links a.active::after{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static;top:auto}
  .side-nav{padding:10px}
  .side-nav h2{padding:4px 10px 8px}
  .side-nav ul{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px}
  .side-nav a{white-space:nowrap;background:#FCFAF6;border:1px solid var(--line)}
  .side-nav a::before{display:none}
  .side-card{display:none}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:minmax(0,1fr)}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .cat-hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .check-grid{grid-template-columns:minmax(0,1fr)}
  .notice{grid-template-columns:78px minmax(0,1fr);gap:14px}
  .notice .badge-soft{grid-column:2;justify-self:start}
  .panel-num{font-size:34px}
}
@media (max-width:520px){
  .site-container{padding:0 16px}
  body{font-size:16px}
  .topbar-left,.topbar-right{font-size:12px;gap:12px}
  .brand-text{font-size:15.5px}
  .notice{grid-template-columns:minmax(0,1fr);padding:14px}
  .notice-date{flex-direction:row;align-items:baseline;gap:8px;border-right:0;border-bottom:1px solid var(--line);padding:0 0 10px}
  .notice .badge-soft{grid-column:1}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#14181A;
  --primary:#0E3B32;
  --primary-deep:#0A2B25;
  --accent:#E2542C;
  --accent-soft:#FBEDE7;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --line:#E3DED2;
  --muted:#6B6F6A;
  --lime:#C9E265;
  --radius-card:16px;
  --radius-img:20px;
  --radius-input:12px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 18px 40px -18px rgba(14,59,50,.28);
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

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

a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}

h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
p{margin:0;}

button,input{font:inherit;color:inherit;}

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

.site-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- 顶部工具条 ---------- */
.topbar{
  background:var(--primary-deep);
  color:rgba(255,255,255,.7);
  font-size:13px;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:40px;
  flex-wrap:wrap;
}
.topbar a{color:rgba(255,255,255,.82);}
.topbar a:hover{color:var(--lime);}
.topbar-group{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.topbar-sep{color:rgba(255,255,255,.25);}

/* ---------- 主导航 ---------- */
.mainnav{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,243,236,.93);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease, background .2s ease;
}
.mainnav-inner{
  display:grid;
  grid-template-columns:auto minmax(280px,1fr) auto auto auto;
  align-items:center;
  gap:18px;
  padding-top:14px;
  padding-bottom:14px;
  transition:padding .24s ease;
}
.mainnav.is-stuck{box-shadow:0 10px 30px -22px rgba(14,59,50,.5);}
.mainnav.is-stuck .mainnav-inner{padding-top:8px;padding-bottom:8px;}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-weight:800;
  font-size:18px;
  line-height:1.2;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand:hover{color:var(--primary);}
.brand-mark{
  width:40px;height:40px;
  flex:none;
  border-radius:12px;
  background:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:var(--lime);stroke-width:1.6;stroke-linejoin:round;}
.brand-text{display:flex;flex-direction:column;}
.brand-text small{
  font-size:10px;
  font-weight:500;
  letter-spacing:.18em;
  color:var(--muted);
  margin-top:2px;
}

.nav-search{
  display:flex;
  align-items:center;
  height:50px;
  max-width:560px;
  width:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:999px;
  padding:0 6px 0 18px;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.nav-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(14,59,50,.08);
}
.nav-search > svg{
  width:20px;height:20px;flex:none;
  fill:none;stroke:var(--muted);stroke-width:1.8;stroke-linecap:round;
}
.nav-search input{
  flex:1;
  min-width:0;
  border:0;
  outline:0;
  background:transparent;
  font-size:15px;
  padding:0 12px;
  height:100%;
}
.nav-search input::placeholder{color:#9AA09A;}
.nav-search button{
  flex:none;
  height:38px;
  padding:0 18px;
  border:0;
  border-radius:999px;
  background:var(--accent);
  color:#fff;
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:background .2s ease, transform .2s ease;
}
.nav-search button:hover{background:#c9451f;transform:translateY(-1px);}

.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  padding:9px 13px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  color:var(--ink);
  white-space:nowrap;
  transition:background .2s ease, color .2s ease;
}
.nav-links a:hover{background:#EFEBE1;color:var(--primary);}
.nav-links a.active{background:var(--primary);color:#fff;}
.nav-links a.active:hover{background:var(--primary);color:#fff;}

.nav-icon-btn{
  display:none;
  width:46px;height:46px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--surface);
  cursor:pointer;
  transition:border-color .2s ease, background .2s ease;
}
.nav-icon-btn svg{width:20px;height:20px;fill:none;stroke:var(--primary);stroke-width:1.8;stroke-linecap:round;}
.nav-icon-btn:hover{border-color:var(--primary);}

.nav-toggle{
  display:none;
  width:46px;height:46px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--surface);
  cursor:pointer;
  transition:border-color .2s ease;
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--primary);stroke-width:1.8;}
.nav-toggle:hover{border-color:var(--primary);}

/* ---------- 按钮 ---------- */
.hbtn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:50px;
  padding:0 26px;
  border:1px solid transparent;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  line-height:1;
  cursor:pointer;
  white-space:nowrap;
  transition:background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.hbtn-sm{height:42px;padding:0 20px;font-size:14px;}
.hbtn-block{width:100%;}
.hbtn-primary{background:var(--primary);color:#fff;}
.hbtn-primary:hover{background:#0b302a;color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px -16px rgba(14,59,50,.7);}
.hbtn-primary:active{transform:translateY(0);}
.hbtn-accent{background:var(--accent);color:#fff;}
.hbtn-accent:hover{background:#c9451f;color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px -14px rgba(226,84,44,.65);}
.hbtn-accent:active{transform:translateY(0);}
.hbtn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.hbtn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.hbtn-outline{background:transparent;border-color:var(--primary);color:var(--primary);}
.hbtn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px);}
.hbtn[disabled]{opacity:.4;pointer-events:none;transform:none;}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  padding:20px 0 26px;
  box-shadow:0 24px 44px -26px rgba(14,59,50,.45);
  transform:translateY(-102%);
  visibility:hidden;
  transition:transform .3s ease, visibility .3s ease;
}
.nav-drawer.is-open{transform:translateY(0);visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;background:var(--surface);cursor:pointer;
}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:var(--primary);stroke-width:1.8;stroke-linecap:round;}
.nav-search-drawer{max-width:none;margin-bottom:18px;}
.drawer-links{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;}
.drawer-links a{
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--surface);
  font-size:15px;
  font-weight:500;
  color:var(--ink);
}
.drawer-links a.active{background:var(--primary);color:#fff;border-color:var(--primary);}
.drawer-links a:hover{border-color:var(--primary);}
.drawer-cta{margin-top:18px;}

/* ---------- 分类页头 ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--primary-deep);
  color:#fff;
  padding:clamp(38px,5.5vw,68px) 0 clamp(42px,6vw,74px);
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.5;
}
.cat-hero-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(96deg,rgba(10,43,37,.94) 0%,rgba(10,43,37,.72) 55%,rgba(10,43,37,.58) 100%);
}
.cat-hero-inner{position:relative;z-index:2;max-width:760px;}
.breadcrumb-nav{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.68);
  margin-bottom:18px;
}
.breadcrumb-nav a{color:rgba(255,255,255,.82);}
.breadcrumb-nav a:hover{color:var(--lime);}
.breadcrumb-nav span.sep{color:rgba(255,255,255,.35);}
.cat-eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--lime);
  font-weight:500;
  margin-bottom:14px;
}
.cat-hero h1{
  font-size:clamp(2rem,4.6vw,3.2rem);
  line-height:1.12;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
}
.cat-hero-desc{
  margin-top:16px;
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
  max-width:640px;
}
.cat-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.cat-hero-tags span{
  font-size:13px;
  padding:7px 15px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.9);
}

/* ---------- 分类页主体布局 ---------- */
.cat-layout{
  display:grid;
  grid-template-columns:264px minmax(0,1fr);
  gap:36px;
  align-items:start;
  padding:clamp(44px,6vw,84px) 0 clamp(52px,7vw,92px);
}

.cat-side{position:sticky;top:104px;}
.cat-side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  box-shadow:var(--shadow-1);
}
.cat-side-title{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--muted);
  font-weight:500;
  margin-bottom:14px;
}
.cat-side-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:20px;}
.cat-side-nav a{
  display:block;
  padding:10px 12px;
  border-left:3px solid transparent;
  border-radius:0 10px 10px 0;
  font-size:15px;
  color:#3A4540;
  transition:background .2s ease, border-color .2s ease, color .2s ease;
}
.cat-side-nav a:hover{background:#F4F0E7;color:var(--primary);}
.cat-side-nav a.is-active{
  background:var(--accent-soft);
  border-left-color:var(--accent);
  color:var(--accent);
  font-weight:500;
}
.cat-side-note{
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
  border-top:1px solid var(--line);
  padding-top:14px;
  margin-top:4px;
}

/* ---------- 内容分节卡 ---------- */
.panel{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:clamp(22px,3vw,34px);
  margin-bottom:26px;
  overflow:hidden;
  scroll-margin-top:110px;
  transition:box-shadow .24s ease, border-color .24s ease;
}
.panel:hover{border-color:rgba(14,59,50,.22);box-shadow:var(--shadow-2);}
.panel-index{
  position:absolute;
  right:20px;
  top:2px;
  font-size:64px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.05em;
  color:rgba(14,59,50,.05);
  font-feature-settings:"tnum";
  pointer-events:none;
}
.sec-title{
  position:relative;
  font-size:clamp(1.35rem,2.2vw,1.7rem);
  font-weight:700;
  padding-left:16px;
  margin-bottom:10px;
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;top:.28em;
  width:4px;height:1em;
  border-radius:2px;
  background:var(--accent);
}
.sec-lead{
  font-size:15px;
  color:var(--muted);
  line-height:1.8;
  margin-bottom:22px;
  max-width:720px;
}

/* ---------- 图标网格 ---------- */
.icon-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(228px,1fr));
  gap:18px;
}
.icon-card{
  background:#FCFAF6;
  border:1px solid var(--line);
  border-radius:14px;
  padding:20px;
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.icon-card:hover{
  transform:translateY(-4px);
  border-color:rgba(14,59,50,.3);
  background:var(--surface);
  box-shadow:var(--shadow-2);
}
.icon-box{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:14px;
}
.icon-box svg{width:22px;height:22px;fill:none;stroke:var(--accent);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.icon-card h3{font-size:16px;font-weight:700;margin-bottom:8px;}
.icon-card p{font-size:14px;line-height:1.75;color:#5C6660;}

/* ---------- 参数表 ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
table.spec-table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:14px;
}
table.spec-table th{
  background:var(--primary);
  color:#fff;
  text-align:left;
  font-weight:500;
  padding:14px 16px;
  white-space:nowrap;
  letter-spacing:.02em;
}
table.spec-table td{
  padding:14px 16px;
  border-top:1px solid var(--line);
  color:#3A4540;
  line-height:1.65;
  vertical-align:top;
}
table.spec-table tbody tr:nth-child(even){background:#FAF8F3;}
table.spec-table tbody tr:hover{background:var(--accent-soft);}
table.spec-table td:first-child{font-weight:700;color:var(--ink);white-space:nowrap;}

/* ---------- 流程步骤 ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:8px;
}
.flow-item{
  position:relative;
  padding-top:20px;
  border-top:2px solid var(--line);
}
.flow-item::before{
  content:"";
  position:absolute;
  top:-6px;left:0;
  width:10px;height:10px;
  border-radius:50%;
  background:var(--accent);
}
.flow-num{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--accent);
  margin-bottom:8px;
  font-feature-settings:"tnum";
}
.flow-item h3{font-size:16px;margin-bottom:8px;}
.flow-item p{font-size:14px;line-height:1.75;color:#5C6660;}

/* ---------- 图文场景 ---------- */
.scene{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:30px;
  align-items:center;
}
.scene-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-img);
}
.scene-list{list-style:none;margin:0;padding:0;display:grid;gap:16px;}
.scene-list li{
  border-left:3px solid var(--line);
  padding-left:16px;
  transition:border-color .2s ease;
}
.scene-list li:hover{border-left-color:var(--accent);}
.scene-list h4{font-size:16px;margin-bottom:6px;}
.scene-list p{font-size:14px;line-height:1.75;color:#5C6660;}

/* ---------- 数据条 ---------- */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-bottom:24px;
}
.stat{
  background:var(--primary);
  color:#fff;
  border-radius:14px;
  padding:20px 18px;
}
.stat b{
  display:block;
  font-size:clamp(1.5rem,2.6vw,1.9rem);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.02em;
  font-feature-settings:"tnum";
}
.stat span{
  display:block;
  margin-top:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  line-height:1.6;
}

/* ---------- 清单列表 ---------- */
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
.check-list li{
  position:relative;
  padding-left:28px;
  font-size:15px;
  color:#3A4540;
  line-height:1.75;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:12px;height:6px;
  border-left:2px solid var(--accent);
  border-bottom:2px solid var(--accent);
  transform:rotate(-45deg);
}
.check-list li b{color:var(--ink);}

/* ---------- FAQ ---------- */
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  background:var(--surface);
  color:var(--ink);
  font-size:16px;
  font-weight:500;
  padding:18px 22px;
  border:0;
  box-shadow:none;
  transition:background .2s ease, color .2s ease;
}
.accordion-button:not(.collapsed){
  background:var(--accent-soft);
  color:var(--accent);
  box-shadow:none;
  border-left:3px solid var(--accent);
  padding-left:19px;
}
.accordion-button:hover{background:#F4F0E7;color:var(--primary);}
.accordion-button:not(.collapsed):hover{background:var(--accent-soft);color:var(--accent);}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  content:"" !important;
  background-image:none !important;
  width:11px;height:11px;
  border-right:2px solid currentColor;
  border-bottom:2px solid currentColor;
  transform:rotate(45deg);
  transition:transform .22s ease;
  margin-left:auto;
  flex:none;
  position:relative;
  top:-2px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);top:2px;}
.accordion-body{
  padding:18px 22px 22px;
  font-size:15px;
  line-height:1.85;
  color:#3A4540;
  border-top:1px solid var(--line);
}

/* ---------- CTA ---------- */
.cat-cta{
  position:relative;
  overflow:hidden;
  background:var(--primary-deep);
  border-radius:var(--radius-img);
  padding:clamp(26px,4vw,46px);
  display:grid;
  grid-template-columns:minmax(0,1.5fr) auto;
  gap:26px;
  align-items:center;
  color:#fff;
  scroll-margin-top:110px;
}
.cat-cta::after{
  content:"";
  position:absolute;
  right:-70px;bottom:-90px;
  width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(201,226,101,.22),transparent 68%);
}
.cat-cta-inner{position:relative;z-index:2;}
.cat-cta h2{
  color:#fff;
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  margin-bottom:12px;
}
.cat-cta p{font-size:15px;color:rgba(255,255,255,.78);line-height:1.8;max-width:600px;}
.cat-cta-actions{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  gap:12px;
  min-width:200px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--primary-deep);
  color:rgba(255,255,255,.72);
  padding:clamp(46px,6vw,74px) 0 22px;
  margin-top:clamp(40px,6vw,72px);
  font-size:15px;
  line-height:1.8;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
}
.site-footer .brand{color:#fff;}
.site-footer .brand:hover{color:var(--lime);}
.site-footer .brand-mark{background:rgba(255,255,255,.08);}
.site-footer .brand-text small{color:rgba(255,255,255,.48);}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.7);max-width:340px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-tags span{
  font-size:12px;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.78);
}
.site-footer h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.site-footer ul a,
.site-footer ul span{font-size:14px;color:rgba(255,255,255,.72);}
.site-footer ul a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:38px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:28px;
  z-index:70;
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  box-shadow:var(--shadow-2);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s ease, visibility .24s ease, transform .2s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-3px);border-color:var(--primary);}
.to-top svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 进场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .38s ease, transform .38s ease;
}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none !important;transition:none !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .mainnav-inner{grid-template-columns:auto minmax(220px,1fr) auto auto auto;gap:12px;}
  .nav-links a{padding:8px 10px;font-size:14px;}
  .nav-cta{padding:0 18px;}
}

@media (max-width:992px){
  .mainnav-inner{
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:10px;
  }
  .nav-search,
  .nav-links,
  .nav-cta{display:none;}
  .nav-icon-btn,
  .nav-toggle{display:inline-flex;}
  .brand{font-size:17px;}

  .cat-layout{grid-template-columns:minmax(0,1fr);gap:24px;padding-top:32px;}
  .cat-side{
    position:static;
    top:auto;
  }
  .cat-side-card{padding:16px;}
  .cat-side-nav{
    flex-direction:row;
    overflow-x:auto;
    gap:8px;
    padding-bottom:6px;
    margin-bottom:16px;
    -webkit-overflow-scrolling:touch;
  }
  .cat-side-nav a{
    white-space:nowrap;
    border-left:0;
    border:1px solid var(--line);
    border-radius:999px;
    padding:8px 14px;
    font-size:14px;
    background:var(--surface);
  }
  .cat-side-nav a.is-active{
    border-color:var(--accent);
    background:var(--accent-soft);
  }
  .cat-side-note{border-top:1px solid var(--line);padding-top:12px;}
  .panel{scroll-margin-top:88px;}

  .flow{grid-template-columns:repeat(2,1fr);}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
}

@media (max-width:768px){
  body{font-size:16px;}
  .site-container{padding-left:16px;padding-right:16px;}
  .topbar-inner{justify-content:flex-start;gap:8px 14px;padding-top:8px;padding-bottom:8px;}
  .topbar-group{gap:12px;}
  .cat-hero-desc{font-size:15px;}
  .scene{grid-template-columns:minmax(0,1fr);gap:20px;}
  .cat-cta{grid-template-columns:minmax(0,1fr);}
  .cat-cta-actions{flex-direction:row;flex-wrap:wrap;min-width:0;}
  .cat-cta-actions .hbtn{flex:1 1 auto;}
  .drawer-links{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .panel-index{font-size:48px;}
}

@media (max-width:576px){
  .flow{grid-template-columns:minmax(0,1fr);}
  .stat-row{grid-template-columns:minmax(0,1fr);}
  .brand-text small{display:none;}
  .to-top{right:16px;bottom:20px;}
  .accordion-button{font-size:15px;padding:16px 18px;}
  .accordion-button:not(.collapsed){padding-left:15px;}
  .accordion-body{padding:16px 18px 20px;}
  .cat-hero-tags span{font-size:12px;padding:6px 12px;}
}