/* roulang page: index */
:root{
  --ink:#191820;
  --ink-2:#3d3b47;
  --muted:#7b7789;
  --paper:#faf8f3;
  --paper-2:#f1ece2;
  --line:#e4ddd0;
  --violet:#6d34d9;
  --violet-dark:#5223b0;
  --violet-soft:#efe7fd;
  --lime:#d6f24a;
  --mint:#7fe3d2;
  --white:#ffffff;
  --radius:14px;
  --radius-sm:10px;
  --hard:6px 6px 0 rgba(25,24,32,.10);
  --hard-sm:4px 4px 0 rgba(25,24,32,.07);
  --wrap:1240px;
  --sec:96px;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--violet)}
h1,h2,h3,h4{color:var(--ink);font-weight:800;line-height:1.28;margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section-alt{background:var(--paper-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--violet);
  font-weight:700;text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--violet);display:inline-block}
.sec-title{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.01em}
.sec-lead{max-width:660px;color:var(--muted);margin-top:14px;font-size:16.5px}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px}
.dot-bg{
  background-image:radial-gradient(rgba(25,24,32,.10) 1px,transparent 1px);
  background-size:14px 14px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(250,248,243,.92);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:74px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17.5px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:9px;
  background:var(--ink);color:var(--lime);
  font-family:var(--mono);font-size:14px;font-weight:700;letter-spacing:.02em;
}
.brand-text{letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--violet);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--violet)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{transform:scaleX(1);left:0;right:auto;width:26px}
.nav-link.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--lime);
}
.nav-side{display:flex;align-items:center;gap:12px}
.nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;
  border:1px solid var(--ink);border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:600;color:var(--ink);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
}
.nav-cta:hover{background:var(--ink);color:var(--lime);transform:translate(-2px,-2px);box-shadow:var(--hard-sm)}
.nav-toggle{
  display:none;align-items:center;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--white);font-size:14px;color:var(--ink);
}
.mobile-nav{border-top:1px solid var(--line);background:var(--paper)}
.mobile-nav .inner{padding:14px 24px 22px;display:flex;flex-direction:column;gap:2px}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:46px;font-size:15.5px;border-bottom:1px solid var(--line);color:var(--ink-2);
}
.mobile-nav a:last-child{border-bottom:none}
.mobile-nav a.active{color:var(--violet);font-weight:700}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 28px;border-radius:var(--radius-sm);
  background:var(--violet);color:#fff;font-weight:700;font-size:16px;
  border:1px solid var(--violet-dark);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-main:hover{background:var(--violet-dark);color:#fff;transform:translate(-2px,-2px);box-shadow:var(--hard)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 26px;border-radius:var(--radius-sm);
  border:1px solid var(--ink);color:var(--ink);font-weight:600;font-size:16px;
  background:transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-ghost:hover{background:var(--white);transform:translate(-2px,-2px);box-shadow:var(--hard-sm)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:700;color:var(--violet);font-size:15px;
}
.btn-text .arrow{transition:transform .2s ease;display:inline-block}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn-lime{
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 24px;
  border-radius:var(--radius-sm);background:var(--lime);color:var(--ink);
  font-weight:700;font-size:15px;border:1px solid var(--ink);
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn-lime:hover{color:var(--ink);transform:translate(-2px,-2px);box-shadow:var(--hard-sm)}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;border:1px solid var(--line);
  background:var(--white);font-size:13px;color:var(--ink-2);font-weight:600;
}
.badge-soft i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:inline-block}
.badge-k1{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--mono);font-size:12.5px;font-weight:700;
  color:var(--ink);background:var(--mint);border-radius:6px;padding:3px 8px;
}
.tag{
  display:inline-block;padding:4px 11px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.7);
  font-size:12.5px;color:var(--muted);font-weight:600;
}
.tag-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:84px 0 92px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0 0 auto 0;height:100%;
  background-image:radial-gradient(rgba(25,24,32,.09) 1px,transparent 1px);
  background-size:15px 15px;
  opacity:.5;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:60px;width:360px;height:360px;
  border-radius:50%;background:var(--violet-soft);filter:blur(6px);z-index:0;opacity:.75;
}
.hero .wrap{position:relative;z-index:1}
.hero h1{font-size:clamp(31px,4.6vw,54px);letter-spacing:-.02em;margin:20px 0 20px}
.hero h1 .k1{color:var(--violet);font-family:var(--mono);font-weight:800}
.hero-sub{font-size:17.5px;color:var(--ink-2);max-width:600px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:34px 0 38px}
.hero-facts{display:flex;flex-wrap:wrap;gap:14px 40px;border-top:1px solid var(--line);padding-top:26px}
.hero-fact strong{display:block;font-size:26px;color:var(--ink);font-family:var(--mono);line-height:1.2}
.hero-fact span{font-size:13.5px;color:var(--muted)}
.hero-visual{position:relative;padding:0 16px 16px 0}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border:1.5px solid var(--ink);border-radius:var(--radius);
}
.hero-visual::after{
  content:"";position:absolute;right:0;bottom:0;width:56%;height:56%;
  background:var(--lime);border-radius:var(--radius);z-index:-1;
}
.hero-visual .frame-note{
  position:absolute;left:-6px;top:18px;
  background:var(--ink);color:var(--paper);
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;
  padding:5px 10px;border-radius:6px;
}

/* ---------- 编号轨道 ---------- */
.rail{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}
.rail-item{padding:34px 32px 34px 0;border-right:1px solid var(--line)}
.rail-item:last-child{border-right:none;padding-right:0}
.rail-item:not(:first-child){padding-left:32px}
.rail-num{font-family:var(--mono);font-size:14px;color:var(--violet);font-weight:700;letter-spacing:.14em}
.rail-item h3{font-size:20px;margin:12px 0 10px}
.rail-item p{color:var(--muted);font-size:15.5px}

/* ---------- 功能分组 ---------- */
.split{display:grid;grid-template-columns:340px 1fr;gap:64px;align-items:start}
.split-sticky{position:sticky;top:104px}
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.feature-card{
  background:var(--white);border:1.5px solid var(--ink);border-radius:var(--radius);
  padding:28px;transition:transform .22s ease,box-shadow .22s ease;
}
.feature-card:hover{transform:translate(-4px,-4px);box-shadow:var(--hard)}
.feature-card h3{font-size:21px;margin:14px 0 10px}
.feature-card p{color:var(--muted);font-size:15.5px}
.feature-list{margin:18px 0 20px;display:flex;flex-direction:column;gap:9px}
.feature-list li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-2)}
.feature-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:2px;background:var(--violet);
}
.feature-card:nth-child(2){margin-top:34px}
.feature-card:nth-child(3){margin-top:-6px}
.feature-card:nth-child(4){margin-top:28px}

/* ---------- 使用场景 ---------- */
.scene-band{
  position:relative;padding:var(--sec) 0;
  background:linear-gradient(rgba(241,236,226,.94),rgba(241,236,226,.94)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.scene-scroll{
  display:flex;gap:24px;overflow-x:auto;padding:6px 24px 26px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.scene-scroll::-webkit-scrollbar{height:6px}
.scene-scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.scene-card{
  flex:0 0 372px;scroll-snap-align:start;background:var(--white);
  border:1.5px solid var(--ink);border-radius:var(--radius);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease;
}
.scene-card:hover{transform:translate(-4px,-4px);box-shadow:var(--hard)}
.scene-card img{width:100%;height:196px;object-fit:cover;border-bottom:1.5px solid var(--ink)}
.scene-body{padding:24px}
.scene-num{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--violet);line-height:1;letter-spacing:-.02em}
.scene-body h3{font-size:20px;margin:12px 0 10px}
.scene-body p{color:var(--muted);font-size:15.5px}
.scene-points{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 案例 ---------- */
.case-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:44px 0;border-bottom:1px solid var(--line);
}
.case-row:last-of-type{border-bottom:none}
.case-row.reverse .case-media{order:2}
.case-media{position:relative}
.case-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border:1.5px solid var(--ink);border-radius:var(--radius);
}
.case-media .corner{
  position:absolute;right:-10px;top:-10px;width:52px;height:52px;
  background:var(--lime);border:1.5px solid var(--ink);border-radius:10px;z-index:-1;
}
.case-metric{font-family:var(--mono);font-size:44px;font-weight:800;color:var(--violet);line-height:1}
.case-metric small{display:block;font-family:var(--font);font-size:13.5px;color:var(--muted);font-weight:500;margin-top:8px;letter-spacing:.02em}
.case-text h3{font-size:24px;margin:16px 0 12px}
.case-text p{color:var(--muted)}
.case-meta{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 22px}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--white);border:1.5px solid var(--ink);border-radius:var(--radius);
  padding:34px 28px;transition:transform .22s ease,box-shadow .22s ease;
}
.price-card:hover{transform:translate(-4px,-4px);box-shadow:var(--hard)}
.price-card.recommend{background:linear-gradient(180deg,var(--violet-soft) 0%,var(--white) 46%)}
.price-card.recommend::before{
  content:"";position:absolute;left:-1.5px;right:-1.5px;top:-1.5px;height:8px;
  background:var(--lime);border-radius:var(--radius) var(--radius) 0 0;
  border:1.5px solid var(--ink);border-bottom:none;
}
.price-name{font-size:19px;font-weight:800;color:var(--ink)}
.price-for{font-size:14px;color:var(--muted);margin-top:8px;min-height:44px}
.price-value{
  font-family:var(--mono);font-size:30px;font-weight:800;color:var(--ink);
  margin:18px 0 6px;letter-spacing:-.02em;
}
.price-unit{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.price-card ul{display:flex;flex-direction:column;gap:11px;padding-top:22px;border-top:1px solid var(--line);margin-bottom:26px}
.price-card li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2)}
.price-card li::before{
  content:"✓";position:absolute;left:0;top:0;color:var(--violet);font-size:13px;font-weight:700;
}
.price-card .btn-main,.price-card .btn-ghost{width:100%;justify-content:center;margin-top:auto}
.price-note{
  margin-top:30px;padding:20px 24px;border:1px dashed var(--line);border-radius:var(--radius);
  font-size:14.5px;color:var(--muted);background:rgba(255,255,255,.6);
}

/* ---------- 最新信息 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--white);
  border:1.5px solid var(--ink);border-radius:var(--radius);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease;height:100%;
}
.post-card:hover{transform:translate(-4px,-4px);box-shadow:var(--hard)}
.post-thumb{display:block;border-bottom:1.5px solid var(--ink)}
.post-thumb img{width:100%;height:158px;object-fit:cover}
.post-body{padding:22px;display:flex;flex-direction:column;flex:1}
.post-body h3{font-size:17.5px;line-height:1.5;margin:12px 0 10px}
.post-body h3 a{color:var(--ink)}
.post-body h3 a:hover{color:var(--violet)}
.post-body p{
  color:var(--muted);font-size:14.5px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);border-top:1px solid var(--line);
}
.empty-state{
  border:1.5px dashed var(--line);border-radius:var(--radius);
  padding:56px 24px;text-align:center;background:rgba(255,255,255,.6);
}
.empty-state strong{display:block;font-size:17px;color:var(--ink);margin-bottom:8px}
.empty-state span{color:var(--muted);font-size:15px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-wrap .accordion-item{
  background:transparent;border:none;border-top:1px solid var(--line);
}
.faq-wrap .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-wrap .accordion-button{
  background:transparent;box-shadow:none;color:var(--ink);
  font-size:17px;font-weight:700;padding:24px 44px 24px 0;line-height:1.6;
}
.faq-wrap .accordion-button:not(.collapsed){color:var(--violet)}
.faq-wrap .accordion-button::after{
  background-image:none;content:"+";font-size:22px;font-weight:700;color:var(--violet);
  width:auto;height:auto;transform:none;position:absolute;right:6px;top:50%;
  translate:0 -50%;margin:0;line-height:1;
}
.faq-wrap .accordion-button:not(.collapsed)::after{content:"−"}
.faq-wrap .accordion-body{
  padding:0 60px 26px 0;color:var(--muted);font-size:15.5px;line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(250,248,243,.16) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;
}
.cta-band .wrap{position:relative;z-index:1;padding-top:76px;padding-bottom:76px}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:34px}
.cta-band h2{color:var(--paper);font-size:clamp(24px,3vw,34px);max-width:640px}
.cta-band p{color:rgba(250,248,243,.72);margin-top:14px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-actions .btn-ghost{border-color:rgba(250,248,243,.45);color:var(--paper)}
.cta-actions .btn-ghost:hover{background:rgba(250,248,243,.08);color:var(--paper)}

/* ---------- 页脚 ---------- */
.site-footer{background:#141319;color:rgba(250,248,243,.68);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:48px;padding-bottom:52px}
.site-footer .brand{color:var(--paper)}
.site-footer .brand-mark{background:var(--lime);color:var(--ink)}
.footer-desc{margin-top:18px;font-size:14.5px;line-height:1.9;max-width:300px}
.footer-col h4{color:var(--paper);font-size:15px;margin-bottom:20px;letter-spacing:.04em}
.footer-col a,.footer-col li{display:block;font-size:14.5px;color:rgba(250,248,243,.68);margin-bottom:12px}
.footer-col a:hover{color:var(--lime)}
.footer-contact strong{color:var(--paper);font-weight:600;display:block;margin-bottom:4px;font-size:14.5px}
.footer-bottom{
  border-top:1px solid rgba(250,248,243,.14);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;font-size:13.5px;
}
.footer-bottom a{color:rgba(250,248,243,.68)}
.footer-bottom a:hover{color:var(--lime)}
.to-top{
  display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(250,248,243,.24);
  padding:7px 14px;border-radius:8px;
}
.to-top:hover{background:rgba(250,248,243,.08)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sec:80px}
  .split{grid-template-columns:290px 1fr;gap:44px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  :root{--sec:68px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-inner{height:66px;justify-content:space-between}
  .split{grid-template-columns:1fr;gap:34px}
  .split-sticky{position:static}
  .feature-card:nth-child(2),.feature-card:nth-child(3),.feature-card:nth-child(4){margin-top:0}
  .scene-card{flex:0 0 320px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .hero::after{display:none}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .rail{grid-template-columns:1fr}
  .rail-item{border-right:none;border-bottom:1px solid var(--line);padding:26px 0}
  .rail-item:not(:first-child){padding-left:0}
  .rail-item:last-child{border-bottom:none}
  .feature-grid{grid-template-columns:1fr}
  .case-row{grid-template-columns:1fr;gap:26px;padding:34px 0}
  .case-row.reverse .case-media{order:0}
  .price-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-lime{flex:1;justify-content:center}
}
@media (max-width:575.98px){
  :root{--sec:54px}
  .wrap{padding:0 18px}
  .hero{padding:52px 0 62px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-main,.hero-actions .btn-ghost{justify-content:center;width:100%}
  .hero-facts{gap:18px 26px}
  .hero-fact strong{font-size:22px}
  .scene-card{flex:0 0 82%}
  .scene-scroll{padding-left:18px;padding-right:18px}
  .accordion-body{padding-right:0}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (min-width:992px){
  .mobile-nav{display:none !important}
}

/* roulang page: category1 */
:root{
  --violet:#6C3BF4;
  --violet-deep:#4A22C4;
  --violet-soft:#EFE9FF;
  --lime:#C9F53C;
  --mint:#7FD8C4;
  --ink:#15131C;
  --ink-2:#2C2938;
  --muted:#6E6A7B;
  --paper:#F8F5EF;
  --paper-2:#F1ECE3;
  --line:#E2DCD1;
  --line-strong:#C9C1B4;
  --white:#FFFFFF;
  --radius-s:10px;
  --radius-m:14px;
  --radius-l:20px;
  --shadow-hard:5px 5px 0 rgba(21,19,28,.10);
  --shadow-hard-hi:7px 7px 0 rgba(21,19,28,.16);
  --shadow-soft:0 14px 34px rgba(21,19,28,.07);
  --sect-y:96px;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SFMono-Regular","JetBrains Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.82;
  color:var(--ink);
  background-color:var(--paper);
  background-image:radial-gradient(rgba(21,19,28,.045) 1px,transparent 1px);
  background-size:22px 22px;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease;}
a:hover{color:var(--violet);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px;}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 22px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(248,245,239,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-bar{display:flex;align-items:center;gap:26px;min-height:74px;}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:var(--ink);color:var(--lime);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:700;font-size:15px;letter-spacing:.4px;
  border:2px solid var(--ink);
  box-shadow:3px 3px 0 rgba(108,59,244,.35);
}
.brand-text{font-size:18.5px;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex-wrap:wrap;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15.5px;font-weight:600;color:var(--ink-2);
  border-radius:9px;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--violet);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--violet);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--violet);}
.nav-link.active::after{transform:scaleX(1);}
.nav-link.active::before{
  content:"";position:absolute;left:3px;top:50%;width:6px;height:6px;border-radius:50%;
  background:var(--lime);transform:translateY(-50%);
}
.nav-cta{
  margin-left:auto;display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:11px;
  background:var(--violet);color:#fff;font-weight:700;font-size:15px;
  border:2px solid var(--violet);box-shadow:4px 4px 0 rgba(21,19,28,.14);
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-cta:hover{color:#fff;background:var(--violet-deep);transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(21,19,28,.18);}
.nav-toggle{
  display:none;margin-left:auto;width:46px;height:44px;border:1.6px solid var(--line-strong);
  background:var(--white);border-radius:11px;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:19px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:19px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- common ---------- */
.section{padding:var(--sect-y) 0;}
.sect-head{max-width:760px;margin-bottom:46px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:12.5px;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--violet);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);}
h2{font-size:clamp(27px,3.4vw,38px);line-height:1.28;margin-bottom:16px;}
h3{font-size:21px;line-height:1.45;margin-bottom:10px;}
.lead{font-size:17px;color:var(--muted);line-height:1.85;}
.tag{
  display:inline-block;padding:4px 11px;border-radius:99px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid var(--line-strong);background:var(--white);color:var(--ink-2);
}
.tag-mint{background:rgba(127,216,196,.18);border-color:rgba(127,216,196,.55);color:#1E6B5B;}
.tag-lime{background:rgba(201,245,60,.28);border-color:rgba(160,196,30,.55);color:#4A5A05;}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 24px;border-radius:11px;font-weight:700;font-size:15.5px;
  border:2px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--violet);color:#fff;border-color:var(--violet);box-shadow:4px 4px 0 rgba(21,19,28,.15);}
.btn-primary:hover{background:var(--violet-deep);color:#fff;transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(21,19,28,.2);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(21,19,28,.16);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--violet);font-size:15px;}
.link-arrow i{font-style:normal;transition:transform .22s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- breadcrumb ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:rgba(255,255,255,.6);}
.crumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:14px 0;font-size:13.5px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--violet);}
.crumb .sep{width:14px;height:1px;background:var(--line-strong);display:inline-block;}
.crumb .now{color:var(--ink);font-weight:600;}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(105deg,rgba(248,245,239,.96) 0%,rgba(248,245,239,.82) 52%,rgba(239,233,255,.72) 100%),
    url("/assets/images/backpic/back-1.png") center right/cover no-repeat;
}
.cat-hero::after{
  content:"";position:absolute;right:-70px;top:-70px;width:230px;height:230px;border-radius:26px;
  border:3px solid var(--ink);background:rgba(201,245,60,.5);
  transform:rotate(12deg);opacity:.55;pointer-events:none;
}
.cat-hero-inner{position:relative;z-index:2;padding:64px 0 62px;max-width:860px;}
.cat-hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.16;margin-bottom:20px;}
.cat-hero h1 .hl{position:relative;display:inline-block;}
.cat-hero h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:12px;
  background:rgba(201,245,60,.7);z-index:-1;border-radius:3px;
}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}
.hero-stats{display:flex;gap:38px;flex-wrap:wrap;margin-top:34px;padding-top:26px;border-top:1px solid var(--line-strong);}
.hero-stats .num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--violet);display:block;line-height:1.2;}
.hero-stats .lbl{font-size:13.5px;color:var(--muted);}

/* ---------- layout: sticky side + content ---------- */
.layout-split{display:grid;grid-template-columns:250px 1fr;gap:44px;align-items:start;}
.side-nav{position:sticky;top:98px;}
.side-nav h4{
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:700;font-family:var(--mono);margin-bottom:14px;
}
.side-nav ul{border-left:2px solid var(--line);}
.side-nav li a{
  display:block;padding:9px 0 9px 16px;position:relative;
  font-size:15px;color:var(--ink-2);font-weight:500;
}
.side-nav li a::before{
  content:"";position:absolute;left:-2px;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--violet);transition:height .22s ease;
}
.side-nav li a:hover{color:var(--violet);}
.side-nav li a:hover::before{height:100%;}
.side-note{
  margin-top:26px;padding:18px;border:1.6px solid var(--ink);border-radius:var(--radius-m);
  background:var(--white);box-shadow:var(--shadow-hard);
}
.side-note p{font-size:14px;color:var(--muted);margin-bottom:12px;}

.group-block + .group-block{margin-top:56px;}
.group-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:22px;}
.group-head .k1{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--ink);
  background:var(--lime);border:2px solid var(--ink);border-radius:8px;padding:2px 9px;
}
.group-head h3{font-size:23px;margin:0;}
.group-head p{font-size:14.5px;color:var(--muted);flex:1 1 240px;min-width:200px;margin:0;}
.card-2{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.info-card{
  border:1.6px solid var(--ink);border-radius:var(--radius-m);background:var(--white);
  box-shadow:var(--shadow-hard);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hard-hi);}
.info-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;border-bottom:1.6px solid var(--ink);background:var(--paper-2);}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.info-card:hover .thumb img{transform:scale(1.04);}
.info-card .body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.info-card h4{font-size:19px;margin-bottom:10px;}
.info-card .ex{font-size:15px;color:var(--muted);line-height:1.78;margin-bottom:16px;}
.info-card .meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px;}
.info-card .foot{margin-top:auto;}
.card-plain{padding:22px 24px;}
.card-plain .points li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-2);margin-bottom:7px;
}
.card-plain .points li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--mint);}

/* ---------- process ---------- */
.process-band{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.step{padding:34px 26px 34px 0;position:relative;}
.step + .step{padding-left:26px;border-left:1px solid var(--line);}
.step .no{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--violet);line-height:1;margin-bottom:16px;display:block;}
.step h4{font-size:18px;margin-bottom:10px;}
.step p{font-size:14.5px;color:var(--muted);}
.step .dur{display:inline-block;margin-top:12px;font-size:12.5px;font-family:var(--mono);color:#4A5A05;background:rgba(201,245,60,.35);border-radius:6px;padding:3px 9px;}

/* ---------- list rows ---------- */
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:14px 30px;margin-top:26px;}
.check-list li{position:relative;padding-left:26px;font-size:15.5px;color:var(--ink-2);}
.check-list li::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:4px;
  border:1.6px solid var(--ink);background:var(--lime);
}

/* ---------- CTA ---------- */
.cta-band{
  background-color:var(--ink);color:var(--paper);position:relative;overflow:hidden;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:20px 20px;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;padding:72px 0;}
.cta-inner h2{color:#fff;font-size:clamp(25px,3.2vw,36px);margin-bottom:12px;}
.cta-inner p{color:rgba(248,245,239,.72);font-size:16px;max-width:620px;}
.cta-inner .btn-primary{box-shadow:5px 5px 0 rgba(201,245,60,.32);}
.cta-inner .btn-ghost{color:var(--paper);border-color:rgba(248,245,239,.55);}
.cta-inner .btn-ghost:hover{background:var(--paper);color:var(--ink);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(248,245,239,.78);padding:66px 0 26px;border-top:3px solid var(--lime);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-mark{background:var(--lime);color:var(--ink);border-color:var(--lime);box-shadow:3px 3px 0 rgba(255,255,255,.16);}
.footer-desc{font-size:14.5px;line-height:1.8;margin-top:16px;color:rgba(248,245,239,.66);max-width:320px;}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:16px;}
.footer-col a{display:block;font-size:14.5px;color:rgba(248,245,239,.72);padding:5px 0;}
.footer-col a:hover{color:var(--lime);}
.footer-contact strong{display:block;color:#fff;font-size:14.5px;margin-bottom:4px;}
.footer-contact p{color:rgba(248,245,239,.66);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(248,245,239,.16);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(248,245,239,.55);
}
.to-top{color:var(--lime);font-weight:600;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .layout-split{grid-template-columns:220px 1fr;gap:32px;}
  .process-grid{grid-template-columns:1fr 1fr;}
  .step{padding:28px 22px 28px 0;}
  .step:nth-child(3){border-left:none;padding-left:0;}
  .step:nth-child(3),.step:nth-child(4){border-top:1px solid var(--line);}
}
@media (max-width:991px){
  :root{--sect-y:70px;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-links.open{
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    position:absolute;left:0;right:0;top:74px;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:14px 22px 20px;box-shadow:0 16px 28px rgba(21,19,28,.09);
  }
  .nav-links.open .nav-link{padding:13px 10px;font-size:16px;}
  .nav-links.open .nav-link::after{left:10px;right:auto;width:26px;}
  .layout-split{grid-template-columns:1fr;gap:34px;}
  .side-nav{position:static;}
  .side-nav ul{border-left:none;display:flex;flex-wrap:wrap;gap:8px;}
  .side-nav li a{padding:8px 14px;border:1px solid var(--line-strong);border-radius:99px;font-size:14px;}
  .side-nav li a::before{display:none;}
  .side-note{margin-top:18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .cat-hero-inner{padding:48px 0 46px;}
  .cat-hero::after{width:150px;height:150px;right:-56px;top:-56px;}
  .card-2{grid-template-columns:1fr;}
  .process-grid{grid-template-columns:1fr;}
  .step{padding:24px 0;}
  .step + .step{padding-left:0;border-left:none;border-top:1px solid var(--line);}
  .check-list{grid-template-columns:1fr;}
  .hero-stats{gap:24px;}
  .cta-inner{padding:56px 0;}
}
@media (max-width:520px){
  .wrap{padding:0 16px;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-text{font-size:17px;}
  .btn{width:100%;justify-content:center;}
  .hero-actions{flex-direction:column;}
}

/* roulang page: article */
:root{
  --ink:#15141b;
  --ink-2:#3d3b45;
  --ink-3:#6d6a75;
  --paper:#faf7f1;
  --paper-2:#f2ede5;
  --paper-3:#e9e3d9;
  --violet:#6a3df5;
  --violet-dark:#5124d8;
  --lime:#d9f24a;
  --mint:#bdeee0;
  --line:#e2dbd0;
  --warn:#c2452f;
  --radius-s:10px;
  --radius-m:14px;
  --radius-l:18px;
  --shadow-hard:6px 6px 0 rgba(21,20,27,.10);
  --shadow-lift:9px 9px 0 rgba(21,20,27,.14);
  --shadow-soft:0 16px 44px rgba(21,20,27,.08);
  --section-y:96px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
a:focus-visible,button:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.35;letter-spacing:.01em}
p{margin:0}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,247,241,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;min-height:76px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:.02em;flex-shrink:0}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:var(--ink);color:var(--lime);
  font-family:var(--font-mono);font-size:15px;font-weight:700;letter-spacing:.04em;
  box-shadow:3px 3px 0 rgba(106,61,245,.4);
}
.brand-text{color:var(--ink)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:nowrap}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:8px 12px;
  font-size:15.5px;color:var(--ink-2);
  transition:color .22s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;
  background:var(--violet);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.nav-link.active::before{
  content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--lime);
}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 20px;margin-left:8px;
  background:var(--violet);color:#fff;font-size:15px;font-weight:700;
  border-radius:var(--radius-s);
  box-shadow:4px 4px 0 rgba(21,20,27,.14);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
  flex-shrink:0;
}
.header-cta:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(21,20,27,.18);background:var(--violet-dark);color:#fff}
.header-cta span{transition:transform .2s ease}
.header-cta:hover span{transform:translateX(2px)}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-3);flex-wrap:wrap;padding-top:28px}
.crumbs a{color:var(--ink-3);transition:color .2s ease}
.crumbs a:hover{color:var(--violet)}
.crumbs .sep{color:var(--line);font-size:12px}
.crumbs .current{color:var(--ink-2)}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  padding-bottom:54px;
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;right:-120px;top:-60px;width:420px;height:420px;
  background-image:radial-gradient(rgba(21,20,27,.10) 1.4px,transparent 1.4px);
  background-size:16px 16px;
  opacity:.6;pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;left:-40px;bottom:-52px;width:180px;height:180px;
  background:var(--lime);opacity:.35;border-radius:26px;transform:rotate(12deg);
  pointer-events:none;
}
.article-head{position:relative;max-width:900px;padding-top:34px;z-index:1}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(106,61,245,.1);color:var(--violet);
  font-size:13px;font-weight:700;letter-spacing:.04em;
  border:1px solid rgba(106,61,245,.22);
}
.kicker i{width:6px;height:6px;border-radius:50%;background:var(--lime);display:inline-block}
.article-head h1{
  font-size:52px;line-height:1.24;margin:20px 0 22px;
  letter-spacing:-.01em;
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--ink-3)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta .meta-item::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--mint);display:inline-block;
}
.article-meta .meta-item:first-child::before{background:var(--violet)}

/* ---------- 正文 ---------- */
.article-main{padding:72px 0 var(--section-y)}
.article-shell{max-width:820px;margin:0 auto}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-2);overflow-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 22px}
.article-body h2{
  position:relative;font-size:26px;line-height:1.45;color:var(--ink);
  padding-left:18px;margin:46px 0 18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;
  background:var(--violet);border-radius:2px;
}
.article-body h3{
  font-size:20px;color:var(--ink);
  margin:34px 0 14px;padding-bottom:8px;border-bottom:1px solid var(--line);
}
.article-body h4{font-size:17.5px;color:var(--ink);margin:26px 0 12px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body li{margin-bottom:10px}
.article-body li::marker{color:var(--violet);font-weight:700}
.article-body blockquote{
  margin:28px 0;padding:20px 24px;
  background:var(--paper-2);
  border-left:4px solid var(--lime);
  border-radius:0 12px 12px 0;
  color:var(--ink);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--violet);border-bottom:1px solid rgba(106,61,245,.35);transition:border-color .2s ease}
.article-body a:hover{border-bottom-color:var(--violet)}
.article-body img{border-radius:12px;margin:26px auto;box-shadow:var(--shadow-soft)}
.article-body figure{margin:28px 0}
.article-body figcaption{text-align:center;font-size:13.5px;color:var(--ink-3);margin-top:10px}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  font-size:15.5px;margin:0 0 24px;
}
.article-body th{background:var(--paper-3);text-align:left;font-weight:700;color:var(--ink)}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
.article-body pre{
  background:var(--ink);color:#f4f1ea;padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:0 0 24px;
}
.article-body code{font-family:var(--font-mono);background:var(--paper-2);padding:2px 6px;border-radius:6px;font-size:14.5px}
.article-body pre code{background:transparent;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* 空态 */
.article-empty{
  border:1.5px dashed var(--line);border-radius:var(--radius-l);
  padding:64px 32px;text-align:center;background:var(--paper-2);
}
.article-empty h2{font-size:24px;margin-bottom:12px}
.article-empty p{color:var(--ink-3);margin-bottom:26px}

/* ---------- 标签与分享 ---------- */
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  margin-top:52px;padding-top:26px;border-top:1px solid var(--line);
}
.tags{display:flex;flex-wrap:wrap;align-items:center;gap:9px}
.tag-label{font-size:13.5px;color:var(--ink-3);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  background:rgba(189,238,224,.4);
  border:1px solid rgba(21,20,27,.12);
  font-size:13.5px;color:var(--ink-2);
  transition:background .2s ease,transform .2s ease;
}
.tag:hover{background:var(--lime);transform:translateY(-1px);color:var(--ink)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 20px;margin-left:auto;
  background:transparent;border:1px solid var(--ink);
  border-radius:var(--radius-s);color:var(--ink);
  font-size:14.5px;font-weight:700;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-ghost:hover{transform:translate(-2px,-2px);box-shadow:4px 4px 0 rgba(21,20,27,.16);background:var(--paper-2)}

/* ---------- 延伸阅读 ---------- */
.read-more{padding:var(--section-y) 0;background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:44px}
.section-tag{
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--violet);text-transform:uppercase;display:inline-block;margin-bottom:14px;
}
.section-head h2{font-size:34px;color:var(--ink);margin-bottom:14px}
.section-head p{color:var(--ink-3);font-size:16px}
.read-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.read-card{
  display:flex;flex-direction:column;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--radius-m);
  overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.read-card:hover{transform:translate(-3px,-3px);box-shadow:var(--shadow-lift);border-color:var(--ink)}
.read-card figure{margin:0;aspect-ratio:16/10;overflow:hidden;background:var(--paper-3)}
.read-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.read-card:hover figure img{transform:scale(1.04)}
.read-card-body{padding:22px 22px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.read-card-body .mini-tag{
  align-self:flex-start;padding:4px 11px;border-radius:999px;
  background:rgba(106,61,245,.1);color:var(--violet);
  font-size:12.5px;font-weight:700;
}
.read-card-body h3{font-size:18.5px;line-height:1.5;color:var(--ink)}
.read-card-body p{font-size:14.5px;color:var(--ink-3);line-height:1.7;flex:1}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:700;color:var(--violet);
}
.link-arrow i{transition:transform .2s ease;font-style:normal}
.read-card:hover .link-arrow i{transform:translateX(3px)}

/* ---------- 返回入口 ---------- */
.back-row{
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;
  max-width:820px;margin:56px auto 0;padding-top:30px;border-top:1px solid var(--line);
}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--ink-2);
  min-height:44px;transition:color .2s ease;
}
.text-link i{font-style:normal;transition:transform .2s ease}
.text-link:hover{color:var(--violet)}
.text-link:hover i{transform:translateX(3px)}
.text-link.back i{transition:transform .2s ease}
.text-link.back:hover i{transform:translateX(-3px)}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;background:var(--ink);color:var(--paper);
  padding:74px 0;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(250,247,241,.10) 1.4px,transparent 1.4px);
  background-size:18px 18px;opacity:.75;pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:230px;height:230px;
  background:var(--violet);opacity:.4;border-radius:32px;transform:rotate(14deg);
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:34px;color:#fff;margin-bottom:12px}
.cta-inner p{color:rgba(250,247,241,.72);font-size:16px;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{
  display:inline-flex;align-items:center;gap:9px;
  min-height:48px;padding:0 26px;
  background:var(--violet);color:#fff;font-size:15.5px;font-weight:700;
  border:none;border-radius:var(--radius-s);
  box-shadow:4px 4px 0 rgba(217,242,74,.35);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-primary:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 rgba(217,242,74,.45);background:#7a53ff;color:#fff}
.btn-outline-light{
  display:inline-flex;align-items:center;gap:9px;
  min-height:48px;padding:0 24px;
  background:transparent;color:var(--paper);
  border:1px solid rgba(250,247,241,.45);
  border-radius:var(--radius-s);font-size:15.5px;font-weight:700;
  transition:transform .2s ease,background .2s ease,border-color .2s ease;
}
.btn-outline-light:hover{transform:translate(-2px,-2px);background:rgba(250,247,241,.1);border-color:var(--paper);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#121118;color:rgba(250,247,241,.78);padding:72px 0 30px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.site-footer .brand{color:#fff;margin-bottom:16px}
.site-footer .brand-mark{background:var(--lime);color:var(--ink);box-shadow:3px 3px 0 rgba(106,61,245,.6)}
.site-footer .brand-text{color:#fff}
.footer-desc{line-height:1.8;color:rgba(250,247,241,.62);max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700}
.footer-col a{display:block;padding:7px 0;color:rgba(250,247,241,.66);transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--lime);transform:translateX(3px)}
.footer-contact strong{display:block;color:#fff;font-size:14.5px;margin-top:14px}
.footer-contact p{color:rgba(250,247,241,.62);line-height:1.75;margin-top:6px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(250,247,241,.14);
  font-size:13.5px;color:rgba(250,247,241,.55);
}
.to-top{color:var(--lime);font-weight:700;transition:opacity .2s ease}
.to-top:hover{opacity:.78;color:var(--lime)}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .read-grid{grid-template-columns:repeat(3,1fr);gap:20px}
  .article-head h1{font-size:46px}
}
@media (max-width:992px){
  :root{--section-y:68px}
  .header-inner{flex-wrap:wrap;gap:06px;padding:10px 0}
  .nav-links{order:3;width:100%;margin-left:0;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:4px}
  .nav-link{scroll-snap-align:start}
  .header-cta{margin-left:auto}
  .article-head h1{font-size:38px}
  .article-main{padding:52px 0 64px}
  .read-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner h2{font-size:28px}
}
@media (max-width:768px){
  .wrap{padding:0 18px}
  .article-head h1{font-size:32px;margin:16px 0 18px}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:22px;margin-top:38px}
  .article-body h3{font-size:18px}
  .section-head h2{font-size:26px}
  .cta-inner h2{font-size:24px}
  .article-foot .btn-ghost{margin-left:0}
}
@media (max-width:576px){
  body{font-size:16px}
  .article-head h1{font-size:28px}
  .read-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .nav-links{gap:0}
  .nav-link{padding:8px 10px;font-size:15px}
  .header-cta{padding:0 16px;font-size:14.5px}
  .btn-primary,.btn-outline-light{width:100%;justify-content:center}
  .article-hero::before{width:260px;height:260px}
}

/* roulang page: category2 */
:root{
  --brand:#6C3FE4;
  --brand-deep:#4B27A8;
  --brand-soft:#EFE9FF;
  --accent:#D8F53C;
  --mint:#9FE8DC;
  --ink:#15141B;
  --ink-soft:#3B3842;
  --muted:#74706A;
  --paper:#F8F6F1;
  --paper-2:#F1EDE5;
  --line:#E4DFD6;
  --radius:14px;
  --radius-sm:10px;
  --shadow:6px 6px 0 rgba(21,20,27,.08);
  --shadow-hover:9px 9px 0 rgba(21,20,27,.14);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.2px;line-height:1.25}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.wrap,.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(248,246,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:11px;font-weight:800;flex:0 0 auto}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:11px;
  background:var(--ink);color:var(--accent);
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-size:15px;letter-spacing:.5px;box-shadow:3px 3px 0 rgba(21,20,27,.14);
}
.brand-text{font-size:18.5px;letter-spacing:.6px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:11px 15px;font-size:15.5px;color:var(--ink-soft);
  border-radius:8px;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:15px;right:15px;bottom:5px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .28s cubic-bezier(.4,0,.2,1);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.nav-link.active::before{
  content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.header-cta{flex:0 0 auto}
.nav-toggle{
  display:none;margin-left:auto;background:transparent;border:1px solid var(--line);
  border-radius:10px;padding:9px 14px;font-size:15px;color:var(--ink);
}
.nav-toggle:hover{border-color:var(--ink)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 24px;border-radius:11px;font-size:15.5px;font-weight:700;
  border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:5px 5px 0 rgba(21,20,27,.16)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translate(-2px,-2px);box-shadow:7px 7px 0 rgba(21,20,27,.2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(21,20,27,.16)}
.btn-sm{padding:10px 18px;font-size:15px}
.btn-accent{background:var(--accent);color:var(--ink);box-shadow:5px 5px 0 rgba(21,20,27,.18)}
.btn-accent:hover{background:#c9e62f;color:var(--ink);transform:translate(-2px,-2px);box-shadow:7px 7px 0 rgba(21,20,27,.22)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand);
  font-size:15.5px;
}
.text-link .arrow{transition:transform .2s ease}
.text-link:hover{color:var(--brand-deep)}
.text-link:hover .arrow{transform:translateX(3px)}

/* 面包屑 */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--paper-2)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:14px 0;font-size:14px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{width:14px;height:1px;background:#C9C2B6}
.crumb .current{color:var(--ink);font-weight:600}

/* 紧凑 Hero */
.hero-compact{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(248,246,241,.9),rgba(248,246,241,.98)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center right;
}
.hero-compact::after{
  content:"";position:absolute;right:-60px;top:-40px;width:280px;height:280px;border-radius:50%;
  background-image:radial-gradient(rgba(108,63,228,.22) 1.4px,transparent 1.5px);
  background-size:12px 12px;opacity:.7;pointer-events:none;
}
.hero-compact-inner{position:relative;z-index:2;padding:66px 24px 62px;max-width:880px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13.5px;letter-spacing:2px;text-transform:uppercase;color:var(--brand);
  font-weight:700;margin-bottom:18px;
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(216,245,60,.35)}
h1{font-size:clamp(30px,4.4vw,50px);line-height:1.2;margin-bottom:20px}
h1 .k1{
  display:inline-block;background:var(--ink);color:var(--accent);border-radius:8px;
  padding:0 10px;font-family:"SFMono-Regular",Consolas,Menlo,monospace;font-size:.82em;
  transform:translateY(-2px);
}
.hero-lead{font-size:17.5px;color:var(--ink-soft);max-width:720px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px}
.fact-chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:14px;color:var(--ink-soft);
}
.fact-chip b{color:var(--brand);font-family:"SFMono-Regular",Consolas,Menlo,monospace}

/* 通用板块 */
section{position:relative}
.block{padding:var(--sec) 0}
.block-tight{padding:74px 0}
.section-head{max-width:760px;margin-bottom:46px}
.section-head .kicker{
  display:inline-block;font-size:13px;letter-spacing:1.6px;color:var(--brand);
  font-weight:700;margin-bottom:12px;text-transform:uppercase;
}
.section-head h2{font-size:clamp(26px,3.1vw,38px);margin-bottom:16px}
.section-head p{color:var(--muted);margin:0;font-size:16.5px}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* 筛选标签 */
.filter-bar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;padding:26px 0 8px}
.filter-label{font-size:14px;color:var(--muted);margin-right:6px}
.chip{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink-soft);font-size:14.5px;
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.chip.is-active::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:8px;vertical-align:middle}

/* 场景交错行 */
.scene-list{padding-top:22px}
.scene-row{
  display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;
  padding:62px 0;border-top:1px solid var(--line);
}
.scene-row:first-child{border-top:0}
.scene-row.reverse .scene-copy{order:2}
.scene-row.reverse .scene-media{order:1}
.scene-copy{order:1}
.scene-media{order:2;position:relative;margin:0}
.scene-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);
  border:1px solid var(--ink);box-shadow:var(--shadow);
}
.scene-media::before{
  content:"";position:absolute;left:-14px;bottom:-14px;width:96px;height:96px;border-radius:12px;
  background:var(--accent);z-index:-1;
}
.scene-media .frame-note{
  position:absolute;right:14px;bottom:14px;background:rgba(21,20,27,.86);color:var(--paper);
  font-size:12.5px;letter-spacing:.6px;padding:6px 12px;border-radius:8px;
}
.scene-num{
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:clamp(40px,6vw,64px);font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.6px var(--brand);opacity:.55;display:block;margin-bottom:14px;
}
.scene-copy h3{font-size:clamp(21px,2.5vw,27px);margin-bottom:14px}
.scene-copy > p{color:var(--ink-soft);margin-bottom:20px}
.tag{
  display:inline-block;padding:5px 12px;border-radius:999px;font-size:13px;
  background:var(--brand-soft);color:var(--brand-deep);border:1px solid #DED2FF;
  margin-bottom:14px;font-weight:600;
}
.tag.mint{background:#E4F8F4;color:#12665A;border-color:#C6EFE7}
.tag.accent{background:#F4FCCB;color:#4C5A05;border-color:#E3F39B}
.point-list{display:grid;gap:10px}
.point-list li{
  position:relative;padding-left:26px;font-size:15.8px;color:var(--ink-soft);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:12px;height:2px;background:var(--brand);
}
.scene-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}

/* 数据条 */
.data-band{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.data-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  padding:52px 0;
}
.data-item{padding:6px 28px;border-left:1px solid var(--line)}
.data-item:first-child{border-left:0;padding-left:0}
.data-item strong{
  display:block;font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:clamp(30px,4vw,44px);line-height:1.1;color:var(--brand);font-weight:800;
  margin-bottom:8px;
}
.data-item span{display:block;font-size:15px;color:var(--muted)}
.data-item .sub{font-size:13.5px;color:#948E86;margin-top:4px}

/* 交付节奏 */
.flow-list{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.flow-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--ink)}
.flow-step{
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;font-size:13px;letter-spacing:1px;
  color:var(--brand);font-weight:700;margin-bottom:12px;display:block;
}
.flow-card h3{font-size:18.5px;margin-bottom:10px}
.flow-card p{font-size:15px;color:var(--muted);margin:0}

/* CTA */
.cta-band{
  background:var(--ink);color:var(--paper);position:relative;overflow:hidden;
  padding:78px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1.3px,transparent 1.4px);
  background-size:14px 14px;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;gap:32px;justify-content:space-between}
.cta-inner h2{font-size:clamp(24px,3vw,34px);margin-bottom:12px;color:#fff}
.cta-inner p{color:#C9C4BC;margin:0;max-width:600px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-band .btn-ghost{color:var(--paper);border-color:rgba(248,246,241,.55)}
.cta-band .btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}

/* 页脚 */
.site-footer{background:var(--ink);color:#D6D2CB;padding:66px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand{color:#fff;margin-bottom:16px}
.site-footer .brand-mark{background:var(--accent);color:var(--ink)}
.site-footer .brand-text{color:#fff}
.footer-desc{font-size:14.8px;line-height:1.85;color:#A9A49C;max-width:320px;margin:0}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.6px}
.footer-col a{display:block;font-size:14.8px;color:#B5B0A8;padding:6px 0}
.footer-col a:hover{color:var(--accent)}
.footer-col strong{display:block;font-size:14.5px;color:#fff;margin-bottom:4px}
.footer-col p{color:#A9A49C}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(248,246,241,.14);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13.8px;color:#948F88;
}
.to-top{color:#D6D2CB}
.to-top:hover{color:var(--accent)}

/* 响应式 */
@media (max-width:1200px){
  :root{--sec:84px}
  .scene-row{gap:42px}
}
@media (max-width:992px){
  :root{--sec:72px}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:flex-start;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);padding:10px 24px 18px;
    display:none;
  }
  .nav-links.open{display:flex}
  .nav-link{width:100%;padding:14px 6px;border-bottom:1px solid var(--line);font-size:16px}
  .nav-link:last-child{border-bottom:0}
  .nav-link::after{display:none}
  .nav-link.active::before{left:0}
  .nav-link.active{color:var(--brand)}
  .nav-toggle{display:inline-block}
  .header-cta{display:none}
  .scene-row{grid-template-columns:1fr;gap:26px;padding:48px 0}
  .scene-row.reverse .scene-copy{order:1}
  .scene-row.reverse .scene-media{order:2}
  .scene-media{order:1}
  .scene-copy{order:2}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:0;padding:40px 0}
  .data-item{padding:18px 20px;border-left:0;border-top:1px solid var(--line)}
  .data-item:nth-child(odd){padding-left:0}
  .data-item:first-child,.data-item:nth-child(2){border-top:0}
  .flow-list{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  .hero-compact-inner{padding:52px 24px 48px}
  .hero-lead{font-size:16.5px}
  .cta-inner{gap:22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-desc{max-width:none}
}
@media (max-width:576px){
  :root{--sec:56px}
  .wrap,.container{padding:0 18px}
  h1{font-size:clamp(27px,8.4vw,34px)}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{justify-content:center}
  .data-grid{grid-template-columns:1fr}
  .data-item{border-top:1px solid var(--line);padding-left:0}
  .data-item:nth-child(2){border-top:1px solid var(--line)}
  .flow-list{grid-template-columns:1fr}
  .chip{font-size:14px;padding:9px 15px}
}

/* roulang page: category3 */
:root{
  --violet:#6C2BD9;
  --violet-dark:#4E1CA6;
  --violet-soft:#EEE6FB;
  --lime:#C6F24E;
  --lime-soft:#F2FBD6;
  --mint:#7FD8C4;
  --mint-soft:#E4F7F2;
  --ink:#17161A;
  --ink-soft:#3C3942;
  --muted:#6E6A75;
  --paper:#F7F4EE;
  --paper-2:#EFEAE1;
  --line:#E0D9CE;
  --line-strong:#17161A;
  --white:#FFFFFF;
  --radius-s:8px;
  --radius:14px;
  --radius-l:20px;
  --shadow-hard:5px 5px 0 rgba(23,22,26,.10);
  --shadow-hard-lg:8px 8px 0 rgba(23,22,26,.14);
  --shadow-soft:0 14px 34px rgba(23,22,26,.07);
  --sec-pad:96px;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;
  font-family:var(--font);
  font-size:16.5px;line-height:1.82;
  color:var(--ink-soft);
  background-color:var(--paper);
  background-image:radial-gradient(rgba(23,22,26,.045) 1px,transparent 1px);
  background-size:22px 22px;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--violet)}
h1,h2,h3,h4{color:var(--ink);font-weight:800;line-height:1.24;margin:0 0 16px;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.4vw,52px)}
h2{font-size:clamp(26px,3.1vw,38px)}
h3{font-size:clamp(19px,2vw,23px);line-height:1.36}
p{margin:0 0 18px}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px}
::selection{background:var(--lime);color:var(--ink)}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,244,238,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  background:var(--ink);color:var(--lime);
  font-family:var(--mono);font-size:15px;font-weight:700;letter-spacing:.02em;
  box-shadow:3px 3px 0 var(--violet);
}
.brand-text{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--ink-soft);
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--violet);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--violet);background:transparent}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.nav-link.active::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--lime);
}
.nav-side{display:flex;align-items:center;gap:14px}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:11px;
  background:var(--violet);color:#fff;font-size:14.5px;font-weight:700;
  box-shadow:3px 3px 0 rgba(23,22,26,.18);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-cta:hover{background:var(--violet-dark);color:#fff;transform:translate(-2px,-2px);box-shadow:5px 5px 0 rgba(23,22,26,.2)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line-strong);border-radius:11px;
  background:var(--white);color:var(--ink);font-size:15px;font-weight:700;cursor:pointer;
}

/* ---------- hero ---------- */
.hero{position:relative;padding:74px 0 66px;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-90px;top:-60px;width:320px;height:320px;border-radius:50%;
  background:var(--lime-soft);opacity:.75;z-index:0;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.badge-k1{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;font-size:13px;font-weight:700;
  border:1px solid var(--line-strong);background:var(--white);color:var(--ink);
}
.badge-k1.accent{background:var(--lime);border-color:var(--lime)}
.badge-k1.mint{background:var(--mint-soft);border-color:var(--mint);color:#1F6B5B}
.hero h1{margin-bottom:20px}
.hero h1 .hl{
  position:relative;display:inline-block;
}
.hero h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;
  background:var(--lime);opacity:.55;z-index:-1;border-radius:3px;
}
.hero-sub{font-size:17.5px;line-height:1.86;color:var(--muted);max-width:600px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.btn-main{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 26px;border-radius:12px;border:1px solid var(--violet);
  background:var(--violet);color:#fff;font-size:15.5px;font-weight:700;
  box-shadow:4px 4px 0 rgba(23,22,26,.16);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-main:hover{background:var(--violet-dark);color:#fff;transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(23,22,26,.2)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;color:var(--ink);font-size:15.5px;font-weight:700;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-ghost:hover{background:var(--white);color:var(--ink);transform:translate(-2px,-2px);box-shadow:4px 4px 0 rgba(23,22,26,.14)}
.arrow{display:inline-block;transition:transform .2s ease}
a:hover .arrow{transform:translateX(4px)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-l);border:1.5px solid var(--line-strong);
  box-shadow:var(--shadow-hard-lg);
}
.hero-media::after{
  content:"";position:absolute;left:-14px;bottom:-14px;width:88px;height:88px;
  border-radius:14px;background:var(--lime);z-index:-1;
}
.hero-media .k1-chip{
  position:absolute;top:-16px;right:-10px;
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 14px;border-radius:12px;background:var(--ink);color:var(--lime);
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.04em;
  box-shadow:3px 3px 0 var(--violet);
}

/* ---------- breadcrumb ---------- */
.crumb-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.55)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:14px 0;font-size:13.5px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--violet)}
.crumb .sep{width:5px;height:5px;border-radius:50%;background:var(--line);display:inline-block}
.crumb .current{color:var(--ink);font-weight:700}

/* ---------- sections ---------- */
section{position:relative}
.sec{padding:var(--sec-pad) 0}
.sec-tight{padding:72px 0}
.sec-head{max-width:820px;margin-bottom:52px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-label{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:12.5px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--violet);margin-bottom:14px;
}
.sec-label::before{content:"";width:26px;height:2px;background:var(--violet);display:inline-block}
.sec-head.center .sec-label::before{display:none}
.sec-desc{font-size:16.5px;color:var(--muted);line-height:1.86;margin:0}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:11px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--violet),var(--line));
}
.tl-item{position:relative;padding-left:56px;margin-bottom:56px}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  position:absolute;left:0;top:6px;width:24px;height:24px;border-radius:50%;
  background:var(--paper);border:3px solid var(--violet);
}
.tl-item:nth-child(even) .tl-node{border-color:var(--ink);background:var(--lime)}
.tl-when{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--violet);margin-bottom:12px;
}
.tl-card{
  display:grid;grid-template-columns:1fr 300px;gap:30px;align-items:start;
  background:var(--white);border:1.5px solid var(--line-strong);
  border-radius:var(--radius);padding:28px;
  box-shadow:var(--shadow-hard);
  transition:transform .24s ease,box-shadow .24s ease;
}
.tl-card:hover{transform:translate(-4px,-4px);box-shadow:var(--shadow-hard-lg)}
.tl-card h3{margin-bottom:12px}
.tl-card p{font-size:15.8px;color:var(--muted);margin-bottom:18px}
.tl-client{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;font-size:12.8px;font-weight:700;
  background:var(--mint-soft);border:1px solid var(--mint);color:#1F6B5B;
  margin-bottom:14px;
}
.tl-points{display:grid;gap:9px;margin-bottom:20px}
.tl-points li{position:relative;padding-left:20px;font-size:15.2px;color:var(--ink-soft)}
.tl-points li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;
  border-radius:3px;background:var(--lime);border:1px solid var(--ink);
}
.tl-result{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;
}
.tl-result span{
  padding:6px 12px;border-radius:9px;background:var(--paper-2);
  font-size:13px;font-weight:700;color:var(--ink);
}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:700;color:var(--violet);
  border-bottom:1.5px solid var(--violet);padding-bottom:3px;
}
.text-link:hover{color:var(--violet-dark);border-color:var(--violet-dark)}
.tl-thumb{
  border-radius:var(--radius);overflow:hidden;border:1.5px solid var(--line-strong);
  box-shadow:4px 4px 0 rgba(23,22,26,.10);
}
.tl-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease}
.tl-card:hover .tl-thumb img{transform:scale(1.04)}

/* ---------- metrics ---------- */
.metrics-band{
  background:var(--ink);color:var(--paper);border-radius:var(--radius-l);
  padding:56px 48px;position:relative;overflow:hidden;
}
.metrics-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:20px 20px;pointer-events:none;
}
.metrics-band h2{color:var(--white);position:relative;z-index:1}
.metrics-band .sec-desc{color:rgba(247,244,238,.72);position:relative;z-index:1}
.metrics-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:42px;
}
.metric{padding:0 26px;border-left:1px solid rgba(247,244,238,.18)}
.metric:first-child{border-left:0;padding-left:0}
.metric-num{
  font-family:var(--mono);font-size:clamp(32px,4vw,46px);font-weight:700;
  color:var(--lime);line-height:1.1;display:block;margin-bottom:8px;
}
.metric-label{font-size:14px;color:rgba(247,244,238,.82);font-weight:600}
.metric-note{font-size:13px;color:rgba(247,244,238,.52);margin-top:6px}

/* ---------- industry strip ---------- */
.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.6)}
.strip-inner{display:flex;flex-wrap:wrap;gap:12px;padding:26px 0}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);
  background:var(--white);font-size:14px;font-weight:600;color:var(--ink-soft);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.chip:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:3px 3px 0 rgba(23,22,26,.10)}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--violet)}
.chip:nth-child(3n) .dot{background:var(--lime)}
.chip:nth-child(3n+2) .dot{background:var(--mint)}

/* ---------- voice ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.voice-card{
  background:var(--white);border:1.5px solid var(--line);border-radius:var(--radius);
  padding:30px;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.voice-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hard)}
.voice-card blockquote{
  margin:0 0 20px;font-size:16.5px;line-height:1.86;color:var(--ink-soft);
  padding-left:18px;border-left:4px solid var(--lime);
}
.voice-meta{font-size:13.5px;color:var(--muted);font-weight:600}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-button{
  width:100%;background:transparent;border:0;box-shadow:none;
  padding:22px 8px;display:flex;align-items:center;gap:16px;
  font-size:17px;font-weight:700;color:var(--ink);text-align:left;
}
.accordion-button:not(.collapsed){color:var(--violet);background:transparent;box-shadow:none}
.accordion-button::after{display:none}
.acc-num{
  flex-shrink:0;font-family:var(--mono);font-size:13px;font-weight:700;
  color:var(--violet);background:var(--violet-soft);border-radius:8px;
  padding:4px 9px;
}
.acc-sign{
  margin-left:auto;flex-shrink:0;width:26px;height:26px;border-radius:8px;
  border:1.5px solid var(--line-strong);position:relative;
}
.acc-sign::before,.acc-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);transform:translate(-50%,-50%);
}
.acc-sign::before{width:12px;height:2px}
.acc-sign::after{width:2px;height:12px;transition:transform .24s ease,opacity .24s ease}
.accordion-button:not(.collapsed) .acc-sign::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.accordion-body{padding:0 8px 26px 55px;font-size:15.8px;line-height:1.86;color:var(--muted)}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:18px 18px;
}
.cta-band::after{
  content:"";position:absolute;right:-70px;bottom:-70px;width:240px;height:240px;
  border-radius:50%;background:rgba(198,242,78,.14);
}
.cta-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1fr auto;gap:38px;align-items:center;
  padding:74px 0;
}
.cta-inner h2{color:var(--white);margin-bottom:14px}
.cta-inner p{color:rgba(247,244,238,.74);margin:0;font-size:16.5px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn-lime{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 26px;border-radius:12px;border:1px solid var(--lime);
  background:var(--lime);color:var(--ink);font-size:15.5px;font-weight:800;
  box-shadow:4px 4px 0 rgba(108,43,217,.6);
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn-lime:hover{color:var(--ink);transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(108,43,217,.75)}
.btn-outline-light{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:12px;border:1px solid rgba(247,244,238,.42);
  background:transparent;color:var(--paper);font-size:15.5px;font-weight:700;
  transition:background .2s ease,transform .2s ease;
}
.btn-outline-light:hover{background:rgba(247,244,238,.10);color:var(--white);transform:translateY(-2px)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,244,238,.7);padding:72px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:44px;padding-bottom:46px;border-bottom:1px solid rgba(247,244,238,.14)}
.site-footer .brand-mark{background:var(--lime);color:var(--ink);box-shadow:3px 3px 0 var(--violet)}
.site-footer .brand-text{color:var(--white)}
.footer-desc{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(247,244,238,.62);max-width:330px}
.footer-col h4{color:var(--white);font-size:15px;margin-bottom:18px;letter-spacing:.02em}
.footer-col a{display:block;font-size:14.5px;color:rgba(247,244,238,.68);padding:6px 0;transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--lime);padding-left:5px}
.footer-contact strong{display:block;color:var(--white);font-size:14.5px;margin-bottom:6px}
.footer-contact p{color:rgba(247,244,238,.62)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  padding-top:24px;font-size:13.5px;color:rgba(247,244,238,.55);
}
.to-top{color:rgba(247,244,238,.72);font-weight:700}
.to-top:hover{color:var(--lime)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .nav-links{gap:0}
  .nav-link{padding:10px 10px;font-size:14.5px}
  .tl-card{grid-template-columns:1fr 260px;gap:24px}
}
@media (max-width:991px){
  :root{--sec-pad:70px}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:10px 24px 18px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-link{padding:14px 4px;font-size:16px;border-radius:0}
  .nav-link::after{left:4px;right:auto;width:36px;bottom:8px}
  .nav-link.active::before{display:none}
  .hero{padding:52px 0 46px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero-media{order:2}
  .hero-media::after{left:-10px;bottom:-10px;width:66px;height:66px}
  .hero-sub{font-size:16.5px}
  .metrics-band{padding:42px 30px}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:30px 0}
  .metric:nth-child(3){border-left:0;padding-left:0}
  .tl-card{grid-template-columns:1fr}
  .tl-thumb{order:-1}
  .voice-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;padding:56px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:575px){
  :root{--sec-pad:52px}
  .wrap{padding:0 18px}
  .brand-text{font-size:17px}
  .brand-mark{width:36px;height:36px;font-size:14px}
  .nav-cta{padding:9px 14px;font-size:13.5px}
  .hero h1{font-size:30px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn-main,.btn-ghost{justify-content:center;width:100%}
  .tl-item{padding-left:40px}
  .tl-card{padding:20px}
  .metrics-band{padding:34px 20px;border-radius:var(--radius)}
  .metrics-grid{grid-template-columns:1fr;gap:26px}
  .metric{border-left:0;padding:0;border-top:1px solid rgba(247,244,238,.16);padding-top:20px}
  .metric:first-child{border-top:0;padding-top:0}
  .accordion-body{padding-left:8px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .btn-lime,.btn-outline-light{justify-content:center;width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
:root{
  --violet:#6a2cf5;
  --violet-dark:#4d1cb8;
  --violet-soft:#efe8ff;
  --lime:#d6f94a;
  --lime-soft:#f4fdd2;
  --mint:#7fe3d0;
  --mint-soft:#e2f8f3;
  --ink:#17151a;
  --ink-soft:#2b2730;
  --muted:#6e6763;
  --paper:#faf8f3;
  --paper-2:#f3efe7;
  --line:#e3ddd3;
  --line-strong:#cdc4b8;
  --warm-red:#b4442f;
  --radius-s:10px;
  --radius:14px;
  --radius-l:20px;
  --shadow-hard:5px 5px 0 rgba(23,21,26,.10);
  --shadow-hard-hover:8px 8px 0 rgba(23,21,26,.14);
  --shadow-soft:0 12px 30px rgba(23,21,26,.07);
  --space-section:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--violet);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--violet-dark)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.01em;line-height:1.28;margin:0}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section-tight{padding:64px 0}
.divider{height:1px;background:var(--line);border:0;margin:0}
.dotgrid{
  background-image:radial-gradient(rgba(23,21,26,.14) 1px,transparent 1px);
  background-size:14px 14px;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(250,248,243,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);font-weight:800}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);color:var(--lime);
  border-radius:11px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:16px;font-weight:700;letter-spacing:.02em;
  box-shadow:3px 3px 0 rgba(106,44,245,.28);
}
.brand-text{font-size:20px;letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:4px;margin:0}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 14px;min-height:44px;
  color:var(--ink-soft);font-size:15.5px;font-weight:500;
  border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;
  height:2px;background:var(--violet);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--violet)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::before{
  content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 0 2px rgba(214,249,74,.5);
}
.nav-link.active::after{transform:scaleX(1)}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--violet);color:#fff;
  padding:11px 20px;min-height:44px;border-radius:11px;
  font-size:15px;font-weight:700;
  box-shadow:3px 3px 0 rgba(23,21,26,.18);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-cta:hover{background:var(--violet-dark);color:#fff;transform:translate(-2px,-2px);box-shadow:5px 5px 0 rgba(23,21,26,.22)}
.nav-toggle{
  display:none;width:46px;height:46px;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:11px;background:#fff;color:var(--ink);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 通用组件 ============ */
.btn-main,.btn-ghost,.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;font-size:15.5px;border-radius:11px;
  min-height:46px;padding:12px 22px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
}
.btn-main{background:var(--violet);color:#fff;box-shadow:4px 4px 0 rgba(23,21,26,.16)}
.btn-main:hover{background:var(--violet-dark);color:#fff;transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(23,21,26,.2)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translate(-2px,-2px);box-shadow:5px 5px 0 rgba(106,44,245,.22)}
.btn-text{background:none;padding:6px 0;min-height:auto;color:var(--violet)}
.btn-text .arw{transition:transform .2s ease}
.btn-text:hover .arw{transform:translateX(3px)}
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--mint-soft);color:#1d5e52;
  border:1px solid rgba(127,227,208,.6);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.badge-lime{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--lime);color:var(--ink);
  font-size:13px;font-weight:700;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--lime)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{font-size:clamp(28px,3.4vw,38px);margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:16.5px}
.lead{font-size:18px;line-height:1.85;color:var(--ink-soft)}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--muted);padding:22px 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--violet)}
.crumb .sep{width:16px;height:1px;background:var(--line-strong);display:inline-block}
.crumb .now{color:var(--ink);font-weight:600}

/* ============ Hero ============ */
.cat-hero{padding:56px 0 72px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.cat-hero .dotgrid-deco{
  position:absolute;right:-40px;top:-30px;width:280px;height:280px;
  opacity:.5;pointer-events:none;
}
.cat-hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:56px;align-items:center;position:relative;z-index:1}
.cat-hero h1{font-size:clamp(30px,4.4vw,50px);margin:18px 0 20px}
.cat-hero h1 .hl{
  background:linear-gradient(transparent 62%,var(--lime) 62%);
  padding:0 2px;
}
.cat-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-figure{position:relative}
.hero-figure img{
  border:1.5px solid var(--ink);border-radius:var(--radius);
  box-shadow:var(--shadow-hard);object-fit:cover;width:100%;height:320px;
}
.hero-figure::after{
  content:"";position:absolute;right:-14px;bottom:-14px;width:88px;height:88px;
  background:var(--lime);border-radius:var(--radius-s);z-index:-1;
}
.hero-stats{display:flex;gap:36px;margin-top:36px;flex-wrap:wrap}
.hero-stats .num{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:26px;font-weight:700;color:var(--violet);
}
.hero-stats .lb{font-size:13.5px;color:var(--muted)}

/* ============ 价格对照表 ============ */
.price-panel{
  background:#fff;border:1.5px solid var(--ink);border-radius:var(--radius-l);
  box-shadow:var(--shadow-hard);overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.price-table{width:100%;border-collapse:collapse;min-width:840px;margin:0}
table.price-table thead th{
  background:var(--paper-2);
  font-size:14px;font-weight:700;color:var(--ink-soft);
  padding:20px 22px;text-align:left;border-bottom:1px solid var(--line-strong);
  vertical-align:bottom;
}
table.price-table thead th.plan-col{min-width:210px}
table.price-table thead th .plan-name{
  display:block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;color:var(--muted);margin-bottom:6px;letter-spacing:.06em;
}
table.price-table thead th .plan-title{display:block;font-size:17px;font-weight:800;color:var(--ink)}
table.price-table thead th .plan-note{display:block;font-size:13px;font-weight:500;color:var(--muted);margin-top:6px}
table.price-table thead th.recommend{
  background:var(--lime-soft);
  border-top:5px solid var(--lime);
  position:relative;
}
table.price-table thead th.recommend .flag{
  position:absolute;top:-1px;left:22px;transform:translateY(-100%);
  background:var(--lime);color:var(--ink);
  font-size:12px;font-weight:800;padding:4px 10px;border-radius:8px 8px 0 0;
}
table.price-table tbody th{
  text-align:left;font-weight:600;font-size:15px;color:var(--ink-soft);
  padding:18px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.price-table tbody td{
  padding:18px 22px;border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--ink-soft);vertical-align:top;
}
table.price-table tbody td.recommend{background:#fbfdea}
table.price-table tbody tr:last-child th,
table.price-table tbody tr:last-child td{border-bottom:0}
table.price-table tbody tr:hover{background:#fdfcf8}
table.price-table tbody tr:hover td.recommend{background:#f7fbdd}
.price-cell{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:19px;font-weight:700;color:var(--violet)}
.price-cell small{display:block;font-family:inherit;font-size:13px;font-weight:500;color:var(--muted);margin-top:4px}
.table-foot{
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;
  padding:22px 24px;background:var(--paper-2);border-top:1px solid var(--line-strong);
}
.table-foot p{font-size:14px;color:var(--muted);margin:0}

/* ============ 套餐说明卡 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.plan-card{
  position:relative;background:#fff;
  border:1.5px solid var(--ink);border-radius:var(--radius);
  padding:30px 28px 28px;
  box-shadow:var(--shadow-hard);
  transition:transform .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.plan-card:hover{transform:translate(-4px,-4px);box-shadow:var(--shadow-hard-hover)}
.plan-card .corner{
  position:absolute;top:0;right:0;width:54px;height:54px;
  background:var(--paper-2);border-left:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);
  border-radius:0 var(--radius) 0 var(--radius);
  display:flex;align-items:center;justify-content:center;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;font-weight:700;color:var(--muted);
}
.plan-card.is-top{border-color:var(--violet);box-shadow:5px 5px 0 rgba(106,44,245,.24)}
.plan-card.is-top .corner{background:var(--lime);color:var(--ink);border-color:var(--ink)}
.plan-card h3{font-size:21px;margin:14px 0 8px}
.plan-card .plan-desc{color:var(--muted);font-size:15px;margin-bottom:20px}
.plan-card ul{margin-bottom:22px;display:grid;gap:11px}
.plan-card ul li{
  position:relative;padding-left:24px;font-size:15px;color:var(--ink-soft);
}
.plan-card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;
  background:var(--violet-soft);border:1.5px solid var(--violet);border-radius:3px;
}
.plan-card.is-top ul li::before{background:var(--lime);border-color:var(--ink)}
.plan-card .plan-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.plan-card .plan-price{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:22px;font-weight:700;color:var(--ink)}
.plan-card .plan-price small{display:block;font-size:12.5px;font-weight:500;color:var(--muted);font-family:inherit}

/* 计费说明 */
.fee-notes{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.fee-note{
  background:var(--paper-2);border:1px solid var(--line);
  border-left:4px solid var(--violet);
  border-radius:var(--radius-s);padding:24px 26px;
}
.fee-note h3{font-size:17.5px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.fee-note h3 .k1{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12px;font-weight:700;color:var(--violet);
  background:#fff;border:1px solid var(--line-strong);border-radius:6px;padding:2px 7px;
}
.fee-note p{font-size:15px;color:var(--muted);margin:0}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  background:transparent;border:0;border-top:1px solid var(--line);
}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent;color:var(--ink);
  font-size:17px;font-weight:700;line-height:1.6;
  padding:24px 44px 24px 0;border-radius:0!important;
  box-shadow:none!important;gap:16px;
}
.accordion-button .k1no{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;font-weight:700;color:var(--violet);flex:0 0 auto;
}
.accordion-button::after{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;background-size:14px;
  filter:invert(14%) sepia(8%) saturate(200%) hue-rotate(230deg);
}
.accordion-button:not(.collapsed){color:var(--violet);background:transparent;box-shadow:none!important}
.accordion-button:focus{box-shadow:none!important;border-color:transparent}
.accordion-body{
  padding:0 40px 26px 0;font-size:15.5px;line-height:1.85;color:var(--muted);
}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink);color:var(--paper);
  padding:76px 0;position:relative;overflow:hidden;
}
.cta-band .dotgrid-bg{
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(250,248,243,.13) 1px,transparent 1px);
  background-size:16px 16px;pointer-events:none;
}
.cta-inner{display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;position:relative;z-index:1}
.cta-inner h2{font-size:clamp(26px,3.2vw,36px);color:#fff;margin-bottom:12px}
.cta-inner p{color:rgba(250,248,243,.72);max-width:560px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-band .btn-main{background:var(--lime);color:var(--ink);box-shadow:4px 4px 0 rgba(250,248,243,.22)}
.cta-band .btn-main:hover{background:#e6ff6e;color:var(--ink)}
.cta-band .btn-ghost{border-color:rgba(250,248,243,.55);color:var(--paper)}
.cta-band .btn-ghost:hover{background:var(--paper);color:var(--ink)}

/* ============ 页脚 ============ */
.site-footer{background:#141216;color:rgba(250,248,243,.78);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px}
.site-footer .brand{color:var(--paper)}
.site-footer .brand:hover{color:var(--paper)}
.site-footer .brand-mark{background:var(--paper);color:var(--ink);box-shadow:3px 3px 0 rgba(214,249,74,.3)}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(250,248,243,.6);margin-top:18px;max-width:330px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:18px}
.footer-col a{display:block;color:rgba(250,248,243,.68);font-size:14.5px;padding:6px 0}
.footer-col a:hover{color:var(--lime)}
.footer-contact strong{display:block;font-size:15px;color:#fff;margin-bottom:6px}
.footer-contact p{color:rgba(250,248,243,.6)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(250,248,243,.14);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13.5px;color:rgba(250,248,243,.5);
}
.to-top{color:var(--lime);font-weight:600}
.to-top:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  :root{--space-section:84px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:34px}
}
@media (max-width:992px){
  :root{--space-section:72px}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:12px 24px 20px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-link{padding:12px 10px}
  .nav-link::after{left:10px;right:auto;width:60px}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .cat-hero-grid{grid-template-columns:1fr;gap:38px}
  .hero-figure{order:2}
  .hero-figure img{height:280px}
  .plan-grid{grid-template-columns:1fr 1fr}
  .fee-notes{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  :root{--space-section:60px}
  body{font-size:16px}
  .cat-hero{padding:36px 0 52px}
  .hero-stats{gap:26px}
  .plan-grid{grid-template-columns:1fr}
  .table-foot{flex-direction:column;align-items:flex-start}
  .accordion-button{font-size:16px;padding:20px 40px 20px 0}
  .accordion-body{padding-right:0}
  .cta-band{padding:60px 0}
}
@media (max-width:520px){
  :root{--space-section:52px}
  .wrap{padding:0 18px}
  .brand-text{font-size:18px}
  .brand-mark{width:38px;height:38px;flex:0 0 38px;font-size:15px}
  .hero-figure img{height:220px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .plan-card{padding:26px 22px}
}