/* roulang page: index */
:root{
  --ink-900:#0B0D14;
  --ink-800:#141726;
  --primary-600:#5B3DF5;
  --primary-700:#4628D6;
  --primary-400:#8C74FF;
  --accent-500:#FF6B2C;
  --mint-400:#16E0B8;
  --bg-050:#F6F7FB;
  --line-200:#E4E6EF;
  --text-main:#14161F;
  --text-sub:#5A5F72;
  --text-weak:#8B90A3;
  --dark-text:#F2F3F8;
  --dark-sub:#A8ADC4;
  --ok:#16E0B8;
  --warn:#FFB020;
  --err:#F0453A;
  --r-sm:8px;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --sh-rest:0 1px 2px rgba(17,20,35,.04),0 8px 24px -12px rgba(17,20,35,.12);
  --sh-hover:0 12px 32px -12px rgba(91,61,245,.28);
  --dur:180ms;
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-main);
  background:var(--bg-050);
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;cursor:pointer}
input{font:inherit}
summary{list-style:none;cursor:pointer}
summary::-webkit-details-marker{display:none}
::selection{background:rgba(91,61,245,.25)}
:focus-visible{outline:3px solid rgba(91,61,245,.35);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(20,22,31,.18);border-radius:8px}
.sidebar ::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18)}

/* ============ 左侧 App Shell ============ */
.sidebar{
  position:fixed;top:0;left:0;width:var(--side-w);height:100vh;
  background:var(--ink-900);color:var(--dark-sub);
  display:flex;flex-direction:column;z-index:70;
  border-right:1px solid rgba(255,255,255,.06);
}
.side-logo{
  height:72px;flex:0 0 72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid rgba(255,255,255,.10);
}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary-600),var(--primary-400));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;
}
.logo-text{color:var(--dark-text);font-weight:700;font-size:15px;letter-spacing:.01em;white-space:nowrap}
.side-nav{
  flex:1 1 auto;overflow-y:auto;padding:16px 12px;display:flex;flex-direction:column;gap:6px;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:var(--r-btn);
  color:var(--dark-sub);font-size:14.5px;transition:background var(--dur),color var(--dur);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{
  background:rgba(91,61,245,.18);color:#fff;font-weight:600;
}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--mint-400);
}
.nav-ico{width:20px;height:20px;flex:0 0 20px;display:flex;align-items:center;justify-content:center}
.nav-ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7}
.nav-label{white-space:nowrap}
.side-tip{display:none}
.side-foot{padding:14px 12px 20px;border-top:1px solid rgba(255,255,255,.10)}

/* 折叠图标栏 */
@media (max-width:1279px){
  .sidebar{width:88px}
  .logo-text{display:none}
  .side-logo{justify-content:center;padding:0}
  .side-nav{padding:16px 14px;align-items:center}
  .nav-item{justify-content:center;padding:0;width:56px}
  .nav-label{display:none}
  .side-tip{
    display:block;position:absolute;left:64px;top:50%;transform:translateY(-50%) scale(.96);
    background:var(--ink-800);color:var(--dark-text);border:1px solid rgba(255,255,255,.14);
    border-radius:12px;padding:6px 12px;font-size:13px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity var(--dur),transform var(--dur);
  }
  .nav-item:hover .side-tip{opacity:1;transform:translateY(-50%) scale(1)}
  .side-cta .btn-label{display:none}
  .side-cta{width:56px;justify-content:center;padding:0}
}
@media (max-width:1023px){
  .sidebar{display:none}
}

/* ============ 移动顶栏与抽屉 ============ */
.mobilebar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  display:none;align-items:center;gap:8px;padding:0 12px;
  background:rgba(11,13,20,.92);border-bottom:1px solid rgba(255,255,255,.10);
  transition:backdrop-filter var(--dur),background var(--dur);
}
.mobilebar.is-scrolled{backdrop-filter:blur(8px);background:rgba(11,13,20,.97)}
.mb-btn{
  width:44px;height:44px;border:0;background:transparent;color:var(--dark-text);
  display:flex;align-items:center;justify-content:center;border-radius:var(--r-btn);
}
.mb-btn:hover{background:rgba(255,255,255,.08)}
.mb-btn svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8}
.mb-brand{margin:0 auto;color:var(--dark-text);font-weight:700;font-size:15px}
.mb-cta{
  width:44px;height:44px;border-radius:var(--r-btn);display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--accent-500),#FF8A4C);color:#fff;
}
.mb-cta svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,13,20,.6);z-index:88;
  opacity:0;pointer-events:none;transition:opacity var(--dur);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;max-width:84vw;z-index:90;
  background:var(--ink-900);padding:18px 14px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(-102%);transition:transform 220ms ease;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:10px;padding:4px 8px 16px;border-bottom:1px solid rgba(255,255,255,.10);margin-bottom:12px}
.drawer-cta{margin-top:auto;padding-top:16px}
@media (max-width:1023px){
  .mobilebar{display:flex}
}

/* ============ 主内容区 ============ */
.main{margin-left:var(--side-w);padding-bottom:0}
@media (max-width:1279px){.main{margin-left:88px}}
@media (max-width:1023px){.main{margin-left:0;padding-top:56px}}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:640px){.container{padding:0 16px}}

.section{padding:96px 0}
.section-tight{padding:72px 0}
@media (max-width:1023px){.section{padding:72px 0}.section-tight{padding:56px 0}}
@media (max-width:640px){.section{padding:56px 0}.section-tight{padding:44px 0}}

.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--primary-700);
  font-weight:700;margin-bottom:10px;
}
.sec-title{font-size:34px;font-weight:700;line-height:1.25;letter-spacing:-.01em}
@media (max-width:640px){.sec-title{font-size:24px}}
.sec-sub{color:var(--text-sub);font-size:15px;margin-top:10px;max-width:640px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-side{display:flex;align-items:center;gap:16px;flex-wrap:wrap}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;background:var(--ink-900);color:var(--dark-text);
  border-radius:0 0 var(--r-lg) var(--r-lg);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:48px 48px;opacity:.5;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-180px;width:560px;height:560px;pointer-events:none;
  background:radial-gradient(circle,rgba(91,61,245,.34),transparent 66%);opacity:.62;
}
.hero-inner{position:relative;z-index:2;padding:76px 0 0}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.02em;
  color:var(--mint-400);background:rgba(91,61,245,.18);
  padding:7px 14px;border-radius:0 6px 6px 6px;
  clip-path:polygon(8px 0,100% 0,100% 100%,0 100%,0 8px);
  font-weight:600;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--mint-400)}
.hero-title{
  font-size:56px;font-weight:800;line-height:1.15;letter-spacing:-.02em;
  margin:22px 0 0;text-shadow:0 1px 0 rgba(255,255,255,.06);
}
.hero-sub{color:var(--dark-sub);font-size:16.5px;margin-top:18px;max-width:460px;line-height:1.8}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.trust{display:flex;gap:26px;margin-top:42px;flex-wrap:wrap}
.trust-item{padding-left:18px;border-left:1px solid rgba(255,255,255,.14)}
.trust-item:first-child{padding-left:0;border-left:0}
.trust-num{font-size:24px;font-weight:800;color:var(--mint-400)}
.trust-label{font-size:12.5px;color:var(--dark-sub);margin-top:2px;letter-spacing:.02em}

.hero-media{position:relative}
.hero-media .shot{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(255,255,255,.12);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.7);background:linear-gradient(135deg,var(--ink-800),var(--primary-700));
}
.hero-media .shot img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.float-card{
  position:absolute;background:#fff;color:var(--text-main);border-radius:var(--r-card);
  padding:12px 14px;box-shadow:0 18px 40px -18px rgba(10,12,25,.55);
  display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
  border:1px solid var(--line-200);
}
.float-card small{display:block;font-size:11.5px;color:var(--text-weak);font-weight:500;letter-spacing:.02em}
.float-a{left:-24px;bottom:56px}
.float-b{right:-18px;top:44px}
.status{
  font-size:11px;font-weight:700;color:#0B0D14;background:var(--mint-400);
  padding:3px 8px;border-radius:6px;letter-spacing:.02em;
}
.float-ico{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(91,61,245,.12);color:var(--primary-700);
}
.float-ico svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8}

.quickbar{
  position:relative;z-index:2;margin-top:56px;
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;display:flex;gap:10px;flex-wrap:wrap;
}
.pill{
  font-size:12px;letter-spacing:.02em;color:var(--dark-sub);
  border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:8px 15px;
  transition:background var(--dur),color var(--dur),border-color var(--dur),transform var(--dur);
}
.pill:hover{background:rgba(91,61,245,.28);color:#fff;border-color:rgba(140,116,255,.6);transform:translateY(-1px)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);border:0;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform var(--dur),box-shadow var(--dur),background var(--dur),color var(--dur),border-color var(--dur);
}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2}
.btn-primary{background:linear-gradient(135deg,var(--primary-600),var(--primary-400));color:#fff;box-shadow:0 12px 28px -14px rgba(91,61,245,.7)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-accent{background:linear-gradient(135deg,var(--accent-500),#FF9552);color:#fff;box-shadow:0 12px 28px -14px rgba(255,107,44,.75)}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;color:var(--dark-text);border:1.5px solid rgba(255,255,255,.3)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5)}
.btn-outline{background:transparent;color:var(--primary-700);border:1.5px solid rgba(91,61,245,.45)}
.btn-outline:hover{background:rgba(91,61,245,.08)}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px}
.link-more{font-size:14px;font-weight:600;color:var(--primary-700);position:relative}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--mint-400);transition:width var(--dur)}
.link-more:hover::after{width:100%}

/* ============ 卖点区 ============ */
.features{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.feat-big{
  grid-column:span 6;background:#fff;border:1px solid var(--line-200);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-rest);display:flex;flex-direction:column;gap:14px;
  transition:box-shadow var(--dur),transform var(--dur),border-color var(--dur);
}
.feat-big:hover{box-shadow:var(--sh-hover);transform:translateY(-4px);border-color:rgba(91,61,245,.35)}
.feat-small{
  grid-column:span 3;background:#fff;border:1px solid var(--line-200);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-rest);display:flex;flex-direction:column;gap:12px;
  transition:box-shadow var(--dur),transform var(--dur),border-color var(--dur);
}
.feat-small:hover{box-shadow:var(--sh-hover);transform:translateY(-4px);border-color:rgba(91,61,245,.35)}
.feat-ico{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(91,61,245,.10);color:var(--primary-600);
}
.feat-ico svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.7}
.feat-h3{font-size:20px;font-weight:700;letter-spacing:-.01em}
.feat-small .feat-h3{font-size:17px}
.feat-p{color:var(--text-sub);font-size:14.5px}
.feat-link{margin-top:auto;font-size:14px;font-weight:700;color:var(--primary-700);display:inline-flex;align-items:center;gap:6px}
.feat-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;transition:transform var(--dur)}
.feat-big:hover .feat-link svg{transform:translateX(4px)}
@media (max-width:1023px){
  .feat-big{grid-column:span 12}
  .feat-small{grid-column:span 6}
}
@media (max-width:640px){
  .feat-small{grid-column:span 12}
  .feat-big{padding:24px}
}

/* ============ 场景演示 ============ */
.scene{background:var(--bg-050)}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.scene-media{position:relative;min-height:340px}
.scene-media .frame{
  border-radius:var(--r-lg);border:1px solid var(--line-200);overflow:hidden;background:#fff;
  box-shadow:var(--sh-rest);
}
.scene-media .frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.scene-media .offset{
  position:absolute;right:-18px;bottom:-32px;width:52%;border-radius:var(--r-card);overflow:hidden;
  border:4px solid #fff;box-shadow:0 18px 40px -20px rgba(20,22,31,.4);
}
.scene-media .offset img{width:100%;aspect-ratio:16/10;object-fit:cover}
.tabs{display:flex;gap:28px;border-bottom:1px solid var(--line-200);margin-bottom:28px}
.tab{
  background:transparent;border:0;padding:0 0 12px;font-size:15px;font-weight:600;color:var(--text-weak);
  position:relative;transition:color var(--dur);
}
.tab:hover{color:var(--text-main)}
.tab.is-active{color:var(--primary-700)}
.tab.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--primary-600);border-radius:2px}
.steps{display:flex;flex-direction:column;gap:0}
.step{position:relative;padding:0 0 22px 66px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:26px;top:44px;bottom:0;width:1px;
  background:repeating-linear-gradient(to bottom,var(--line-200) 0 4px,transparent 4px 9px);
}
.step:last-child::before{display:none}
.step-num{
  position:absolute;left:0;top:0;font-size:30px;font-weight:800;letter-spacing:-.02em;
  color:transparent;-webkit-text-stroke:1.4px rgba(91,61,245,.55);
}
.step-h4{font-size:16.5px;font-weight:700}
.step-p{color:var(--text-sub);font-size:14.5px;margin-top:4px}
@media (max-width:1023px){
  .scene-grid{grid-template-columns:1fr;gap:40px}
  .scene-media{min-height:auto}
  .scene-media .offset{position:static;width:100%;margin-top:16px;border-width:0;box-shadow:var(--sh-rest)}
}
@media (max-width:640px){
  .tabs{gap:20px;overflow-x:auto}
  .step{padding-left:54px}
  .step::before{left:22px}
  .step-num{font-size:26px}
}

/* ============ 最新信息 ============ */
.news-wrap{display:grid;grid-template-columns:1fr;gap:24px}
.chip-row{display:flex;gap:8px;flex-wrap:wrap}
.chip{
  font-size:13px;padding:7px 14px;border-radius:999px;border:1px solid var(--line-200);
  background:#fff;color:var(--text-sub);transition:all var(--dur);
}
.chip:hover{border-color:rgba(91,61,245,.45);color:var(--primary-700)}
.chip.is-active{background:var(--primary-600);border-color:var(--primary-600);color:#fff;font-weight:600}
.post-big{
  display:grid;grid-template-columns:1.02fr 1fr;gap:0;background:#fff;border:1px solid var(--line-200);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-rest);
  transition:transform var(--dur),box-shadow var(--dur),border-color var(--dur);
}
.post-big:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(91,61,245,.35)}
.post-big-body{padding:32px;display:flex;flex-direction:column;gap:14px}
.post-title{font-size:22px;font-weight:700;line-height:1.4;letter-spacing:-.01em}
.post-title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a:hover{color:var(--primary-700)}
.post-excerpt{color:var(--text-sub);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:auto;font-size:13px;color:var(--text-weak)}
.badge-cat{
  align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.02em;color:#fff;
  background:var(--accent-500);padding:5px 11px;
  clip-path:polygon(8px 0,100% 0,100% 100%,0 100%,0 8px);
}
.badge-cat.alt{background:var(--primary-600)}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--primary-700);font-size:13.5px}
.arrow-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;transition:transform var(--dur)}
.arrow-link:hover svg{transform:translateX(4px)}
.media{
  position:relative;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0;
  background:linear-gradient(135deg,rgba(91,61,245,.22),rgba(255,107,44,.18));
}
.media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.media-ph{
  display:none;position:absolute;inset:0;align-items:center;justify-content:center;
  font-size:26px;font-weight:800;color:#fff;
}
.media.is-broken .media-ph{display:flex}
.post-big .media{border-radius:0;min-height:288px}
.post-big:hover .media img,.post-row:hover .media img{transform:scale(1.04)}
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.post-row{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line-200);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--sh-rest);transition:transform var(--dur),box-shadow var(--dur),border-color var(--dur);
}
.post-row:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(91,61,245,.35)}
.post-row .media{width:118px;height:84px;flex:0 0 118px;border-radius:10px}
.post-row-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.post-row-title{font-size:15.5px;font-weight:700;line-height:1.5}
.post-row-title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-row-title a:hover{color:var(--primary-700)}
.post-row-meta{font-size:12.5px;color:var(--text-weak);margin-top:auto}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;padding:56px 24px;
  background:#fff;border:1px dashed var(--line-200);border-radius:var(--r-lg);text-align:center;
}
.empty-ico{width:56px;height:56px;border-radius:16px;background:var(--bg-050);display:flex;align-items:center;justify-content:center;color:var(--text-weak)}
.empty-ico svg{width:26px;height:26px;stroke:currentColor;fill:none;stroke-width:1.6}
.empty-state p{color:var(--text-sub);font-size:15px}
@media (max-width:1023px){
  .post-big{grid-template-columns:1fr}
  .post-big .media{min-height:220px}
  .news-list{grid-template-columns:1fr}
}
@media (max-width:640px){
  .post-big-body{padding:22px}
  .post-row .media{width:96px;height:72px;flex:0 0 96px}
}

/* ============ 社会认同 ============ */
.proof{background:var(--ink-900);color:var(--dark-text);border-radius:var(--r-lg)}
.proof-inner{padding:56px 40px}
.proof-bar{
  background:#fff;color:var(--text-main);border-radius:var(--r-card);
  display:grid;grid-template-columns:repeat(4,1fr);box-shadow:0 20px 50px -30px rgba(0,0,0,.6);
  overflow:hidden;
}
.proof-item{padding:24px;border-left:1px solid var(--line-200)}
.proof-item:first-child{border-left:0}
.proof-num{font-size:26px;font-weight:800;color:var(--primary-700)}
.proof-num.accent{color:var(--accent-500)}
.proof-label{font-size:12.5px;color:var(--text-weak);margin-top:2px;letter-spacing:.02em}
.quotes{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:20px;margin-top:32px}
.quote{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;gap:16px;
}
.quote p{color:var(--dark-text);font-size:15px;line-height:1.8}
.quote cite{font-style:normal;font-size:13px;color:var(--dark-sub);margin-top:auto}
@media (max-width:1023px){
  .proof-inner{padding:40px 24px}
  .proof-bar{grid-template-columns:1fr 1fr}
  .proof-item:nth-child(3){border-left:0}
  .proof-item:nth-child(n+3){border-top:1px solid var(--line-200)}
  .quotes{grid-template-columns:1fr;gap:14px}
}
@media (max-width:640px){
  .proof-bar{grid-template-columns:1fr}
  .proof-item{border-left:0!important;border-top:1px solid var(--line-200)}
  .proof-item:first-child{border-top:0}
}

/* ============ FAQ ============ */
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line-200);border-radius:12px;overflow:hidden;
  transition:border-color var(--dur),background var(--dur);
}
.faq-item[open]{background:rgba(91,61,245,.05);border-color:rgba(91,61,245,.35);position:relative}
.faq-item[open]::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--primary-600);border-radius:0 3px 3px 0}
.faq-q{
  height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 20px;font-size:15.5px;font-weight:600;
}
.faq-mark{position:relative;width:16px;height:16px;flex:0 0 16px;transition:transform var(--dur)}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--primary-600);border-radius:2px}
.faq-mark::before{left:0;right:0;top:7px;height:2px}
.faq-mark::after{top:0;bottom:0;left:7px;width:2px;transition:transform var(--dur)}
.faq-item[open] .faq-mark{transform:rotate(180deg)}
.faq-item[open] .faq-mark::after{transform:scaleY(0)}
.faq-a{padding:0 20px 20px;color:var(--text-sub);font-size:14.5px}
@media (max-width:1023px){.faq-list{grid-template-columns:1fr}}

/* ============ 结尾 CTA ============ */
.cta-card{
  position:relative;overflow:hidden;background:var(--ink-900);color:var(--dark-text);
  border-radius:var(--r-lg);padding:48px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-card::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:360px;height:360px;
  background:radial-gradient(circle,rgba(255,107,44,.28),transparent 66%);pointer-events:none;
}
.cta-title{font-size:26px;font-weight:800;letter-spacing:-.01em;position:relative;z-index:1}
.cta-desc{color:var(--dark-sub);font-size:14.5px;margin-top:8px;position:relative;z-index:1}
@media (max-width:640px){
  .cta-card{padding:28px 22px}
  .cta-title{font-size:21px}
  .cta-card .btn{width:100%}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:var(--dark-sub);margin-top:96px;padding:64px 0 110px}
@media (max-width:1023px){.site-footer{margin-top:64px;padding:48px 0 100px}}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-brand .logo-text{font-size:16px}
.f-desc{font-size:14px;color:var(--dark-sub);max-width:320px}
.f-group>summary{
  color:var(--dark-text);font-size:13px;font-weight:700;letter-spacing:.06em;margin-bottom:14px;
}
.f-links{display:flex;flex-direction:column;gap:10px}
.f-links a{font-size:14px;color:var(--dark-sub);transition:color var(--dur),transform var(--dur);display:inline-block}
.f-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.18);color:var(--dark-text);
  transition:background var(--dur),border-color var(--dur);
}
.to-top:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.35)}
.to-top svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .f-brand-wrap{grid-column:span 2}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:4px}
  .f-brand-wrap{grid-column:span 1;margin-bottom:16px}
  .f-group{border-bottom:1px solid rgba(255,255,255,.10);padding:12px 0}
  .f-group>summary{display:flex;align-items:center;justify-content:space-between;margin-bottom:0;height:44px}
  .f-links{margin-top:12px}
}
@media (min-width:641px){
  .f-group>summary{pointer-events:none}
  .f-group>summary::marker{content:""}
}

/* ============ 底部固定转化条 ============ */
.fixed-cta{
  position:fixed;left:var(--side-w);right:0;bottom:0;z-index:75;
  background:rgba(11,13,20,.92);border-top:1px solid var(--mint-400);
  backdrop-filter:blur(6px);
}
.fixed-cta-inner{
  min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.fixed-cta-text{color:var(--dark-text);font-size:14.5px;font-weight:600}
@media (max-width:1279px){.fixed-cta{left:88px}}
@media (max-width:1023px){
  .fixed-cta{left:0}
  .fixed-cta-inner{min-height:56px;padding-bottom:env(safe-area-inset-bottom)}
  .fixed-cta-text{font-size:13.5px}
  .fixed-cta .btn{min-height:44px;padding:0 16px;font-size:14px}
}
@media (max-width:400px){
  .fixed-cta-text{max-width:120px}
}

/* roulang page: category1 */
:root{
  --ink-900:#0B0D14;
  --ink-800:#141726;
  --line-dark:rgba(255,255,255,.10);
  --primary-600:#5B3DF5;
  --primary-700:#4628D6;
  --primary-400:#8C74FF;
  --accent-500:#FF6B2C;
  --mint-400:#16E0B8;
  --bg-050:#F6F7FB;
  --white:#FFFFFF;
  --line-200:#E4E6EF;
  --t-main:#14161F;
  --t-sub:#5A5F72;
  --t-weak:#8B90A3;
  --t-dark:#F2F3F8;
  --t-dark-sub:#A8ADC4;
  --ok:#16E0B8;
  --warn:#FFB020;
  --err:#F0453A;
  --r-sm:8px;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(17,20,35,.04), 0 8px 24px -12px rgba(17,20,35,.12);
  --sh-2:0 12px 32px -12px rgba(91,61,245,.28);
  --ease:cubic-bezier(.4,0,.2,1);
  --dur:180ms;
  --side-w:240px;
  --topbar-h:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t-main);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t-main);}
h1{font-size:34px;line-height:1.15;letter-spacing:-.02em;font-weight:800;}
h2{font-size:24px;line-height:1.3;font-weight:700;}
h3{font-size:18px;line-height:1.4;font-weight:600;}
p{margin:0;}
.num{font-variant-numeric:tabular-nums;}
::selection{background:rgba(91,61,245,.25);}
:focus-visible{outline:3px solid rgba(91,61,245,.35);outline-offset:2px;border-radius:6px;}
*{scrollbar-width:thin;scrollbar-color:rgba(20,22,31,.18) transparent;}
*::-webkit-scrollbar{width:8px;height:8px;}
*::-webkit-scrollbar-track{background:transparent;}
*::-webkit-scrollbar-thumb{background:rgba(20,22,31,.18);border-radius:8px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.main{margin-left:var(--side-w);padding-top:0;padding-bottom:120px;min-height:100vh;}
.section{padding:56px 0;}
.section-tight{padding:40px 0;}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.sec-head h2{position:relative;padding-left:14px;}
.sec-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--primary-600);}
.sec-sub{color:var(--t-sub);font-size:14px;}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);
  background:var(--ink-900);
  border-right:1px solid var(--line-dark);
  display:flex;flex-direction:column;
  z-index:60;
}
.sb-top{height:72px;display:flex;align-items:center;padding:0 16px;border-bottom:1px solid var(--line-dark);flex:0 0 auto;}
.sb-logo{display:flex;align-items:center;gap:10px;}
.logo-mark{
  width:36px;height:36px;flex:0 0 auto;border-radius:10px;
  background:linear-gradient(135deg,var(--primary-600),var(--primary-400));
  color:#fff;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px -10px rgba(91,61,245,.9);
}
.logo-text{color:var(--t-dark);font-weight:700;font-size:16px;letter-spacing:.01em;white-space:nowrap;}
.side-nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;flex:1 1 auto;}
.side-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:var(--r-btn);
  color:var(--t-dark-sub);font-size:14px;font-weight:500;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.is-active{background:rgba(91,61,245,.18);color:#fff;}
.nav-item.is-active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--mint-400);}
.nav-ico{width:20px;height:20px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;}
.nav-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.nav-label{white-space:nowrap;}
.side-tip{display:none;}
.sb-cta{padding:16px 12px 20px;border-top:1px solid var(--line-dark);flex:0 0 auto;}
.sb-cta .btn{width:100%;justify-content:center;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),filter var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-primary{background:linear-gradient(135deg,var(--primary-600),var(--primary-400));color:#fff;box-shadow:0 10px 24px -14px rgba(91,61,245,.9);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-accent{background:linear-gradient(135deg,var(--accent-500),#FF8A4C);color:#fff;box-shadow:0 10px 24px -14px rgba(255,107,44,.9);}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-accent:active{transform:translateY(0) scale(.99);}
.btn-ghost{border:1.5px solid var(--primary-600);color:var(--primary-600);background:transparent;}
.btn-ghost:hover{background:rgba(91,61,245,.08);transform:translateY(-1px);}
.btn-ghost-dark{border:1.5px solid rgba(255,255,255,.4);color:#fff;background:transparent;}
.btn-ghost-dark:hover{background:rgba(255,255,255,.1);}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px;}
.tlink{position:relative;display:inline-flex;align-items:center;gap:6px;color:var(--primary-600);font-size:14px;font-weight:600;padding-bottom:2px;}
.tlink::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--mint-400);transition:width var(--dur) var(--ease);}
.tlink:hover::after{width:100%;}
.tlink svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.02em;font-weight:600;
  padding:4px 10px;border-radius:6px;
}
.badge-cut{
  clip-path:polygon(8px 0,100% 0,100% 100%,0 100%,0 8px);
  border-radius:0;padding:5px 12px;
  background:var(--primary-600);color:#fff;
}
.badge-accent{background:rgba(255,107,44,.12);color:#D9510F;}
.badge-mint{background:rgba(22,224,184,.14);color:#0B8C74;}
.badge-neutral{background:var(--bg-050);border:1px solid var(--line-200);color:var(--t-sub);}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;color:var(--t-sub);
  padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line-200);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.chip:hover{background:rgba(91,61,245,.08);color:var(--primary-700);border-color:rgba(91,61,245,.35);}

/* ============ 页头带 ============ */
.page-hero{
  position:relative;background:var(--ink-900);color:var(--t-dark);
  overflow:hidden;padding:40px 0 48px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.5;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(91,61,245,.18),transparent 68%);
  pointer-events:none;
}
.ph-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-dark-sub);margin-bottom:16px;}
.crumb a{color:var(--t-dark-sub);transition:color var(--dur) var(--ease);}
.crumb a:hover{color:#fff;}
.crumb .sep{color:rgba(255,255,255,.28);}
.crumb .cur{color:var(--t-weak);}
.page-hero h1{color:#fff;text-shadow:0 1px 0 rgba(255,255,255,.06);}
.page-hero .lead{margin-top:14px;font-size:16px;color:var(--t-dark-sub);max-width:34em;}
.ph-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.ph-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-dark);box-shadow:var(--sh-1);}
.ph-figure img{width:100%;height:220px;object-fit:cover;}

/* ============ 卡片 ============ */
.card{
  background:#fff;border:1px solid var(--line-200);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.35);}
.card-lg{border-radius:var(--r-lg);padding:32px;}
.card-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-200);background:#fff;box-shadow:var(--sh-1);transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.card-media:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.35);}
.card-media img{width:100%;height:170px;object-fit:cover;background:linear-gradient(135deg,rgba(91,61,245,.9),rgba(140,116,255,.7));}
.card-media .cm-body{padding:20px 22px 24px;}
.card-media h3{margin:12px 0 8px;}
.card-media p{color:var(--t-sub);font-size:14px;line-height:1.7;}
.card-cat{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}

/* ============ 时间轴 ============ */
.timeline{margin-top:8px;}
.tl-item{position:relative;padding:0 0 34px 60px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:11px;top:26px;bottom:-6px;width:1px;
  background:var(--line-200);
}
.tl-item:last-child::before{display:none;}
.tl-dot{
  position:absolute;left:4px;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--mint-400);box-shadow:0 0 0 4px rgba(22,224,184,.16);
}
.tl-step{
  position:absolute;left:36px;top:0;font-size:26px;font-weight:800;letter-spacing:.02em;
  color:transparent;-webkit-text-stroke:1px rgba(91,61,245,.35);line-height:1;
}
.tl-body{padding-top:26px;}
.tl-body h3{font-size:17px;}
.tl-body p{margin-top:6px;color:var(--t-sub);font-size:14px;line-height:1.75;}

/* ============ 勾选清单 ============ */
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:6px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;}
.check-ico{width:24px;height:24px;flex:0 0 auto;margin-top:2px;}
.check-ico svg{width:24px;height:24px;fill:none;stroke:var(--mint-400);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.check-list strong{display:block;font-size:15px;font-weight:600;}
.check-list span{display:block;color:var(--t-sub);font-size:14px;line-height:1.7;}

/* ============ 图文块 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.figure-stack{position:relative;}
.figure-stack img{border-radius:var(--r-lg);border:1px solid var(--line-200);box-shadow:var(--sh-1);width:100%;height:260px;object-fit:cover;}
.figure-stack .fs-float{
  position:absolute;right:-18px;bottom:-22px;width:210px;background:#fff;border:1px solid var(--line-200);
  border-radius:var(--r-card);box-shadow:0 18px 40px -20px rgba(17,20,35,.35);padding:16px;
}
.figure-stack .fs-float b{display:block;font-size:22px;color:var(--primary-600);font-variant-numeric:tabular-nums;}
.figure-stack .fs-float small{display:block;color:var(--t-weak);font-size:12px;margin-top:2px;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line-200);border-radius:12px;
  padding:0 20px;transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item+.faq-item{margin-top:0;}
.faq-grid .faq-item{margin-top:0;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:12px 0;font-size:15px;font-weight:600;color:var(--t-main);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary-700);}
.faq-ico{position:relative;width:20px;height:20px;flex:0 0 auto;transition:transform var(--dur) var(--ease);}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--primary-600);border-radius:2px;}
.faq-ico::before{width:14px;height:2px;}
.faq-ico::after{width:2px;height:14px;transition:transform var(--dur) var(--ease);}
.faq-item[open]{border-left:3px solid var(--primary-600);background:rgba(91,61,245,.05);}
.faq-item[open] .faq-ico{transform:rotate(180deg);}
.faq-item[open] .faq-ico::after{transform:translate(-50%,-50%) scaleY(0);}
.faq-ans{padding:0 0 18px;color:var(--t-sub);font-size:14px;line-height:1.75;}

/* ============ CTA ============ */
.cta-band{
  position:relative;background:var(--ink-900);border-radius:var(--r-lg);padding:32px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  overflow:hidden;border:1px solid var(--line-dark);
}
.cta-band::after{
  content:"";position:absolute;left:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,44,.16),transparent 70%);pointer-events:none;
}
.cta-band .cta-text{position:relative;z-index:2;}
.cta-band h2{color:#fff;font-size:22px;}
.cta-band p{color:var(--t-dark-sub);font-size:14px;margin-top:6px;}
.cta-band .btn{position:relative;z-index:2;}

/* ============ 底部固定条 ============ */
.sticky-cta{
  position:fixed;left:var(--side-w);right:0;bottom:0;z-index:55;
  height:64px;display:flex;align-items:center;gap:20px;
  padding:0 24px;
  background:rgba(11,13,20,.94);
  border-top:1px solid var(--mint-400);
  color:var(--t-dark);
}
.sticky-cta .sc-text{font-size:15px;font-weight:600;color:#fff;}
.sticky-cta .sc-text small{display:block;font-weight:400;font-size:12px;color:var(--t-dark-sub);}
.sticky-cta .spacer{flex:1 1 auto;}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--topbar-h);z-index:70;
  align-items:center;gap:8px;padding:0 8px;
  background:rgba(11,13,20,.94);
  border-bottom:1px solid var(--line-dark);
  transition:backdrop-filter var(--dur) var(--ease),background var(--dur) var(--ease);
}
.mobile-bar.is-scrolled{backdrop-filter:blur(8px);background:rgba(11,13,20,.98);}
.burger{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:10px;color:#fff;}
.burger:hover{background:rgba(255,255,255,.08);}
.burger svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;}
.mb-brand{flex:1 1 auto;display:flex;align-items:center;gap:8px;color:#fff;font-weight:700;font-size:15px;}
.mb-brand .logo-mark{width:30px;height:30px;font-size:15px;border-radius:8px;}
.mb-cta{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:linear-gradient(135deg,var(--accent-500),#FF8A4C);color:#fff;}
.mb-cta svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.drawer-mask{position:fixed;inset:0;background:rgba(11,13,20,.6);opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);z-index:80;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;left:0;top:0;bottom:0;width:280px;z-index:90;
  background:var(--ink-900);border-right:1px solid var(--line-dark);
  transform:translateX(-100%);transition:transform var(--dur) var(--ease);
  display:flex;flex-direction:column;padding-bottom:20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;border-bottom:1px solid var(--line-dark);}
.drawer-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:10px;color:#fff;}
.drawer-close:hover{background:rgba(255,255,255,.08);}
.drawer-close svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;}
.drawer .side-nav{padding:16px 12px;}
.drawer-cta{padding:0 12px;margin-top:auto;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:var(--t-dark-sub);padding:56px 0 24px;margin-left:var(--side-w);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.f-brand .logo-text{font-size:16px;}
.f-desc{font-size:14px;line-height:1.75;color:var(--t-dark-sub);max-width:32em;}
.f-group summary{
  list-style:none;cursor:pointer;color:#fff;font-size:13px;letter-spacing:.06em;font-weight:600;
  margin-bottom:14px;display:flex;align-items:center;justify-content:space-between;
}
.f-group summary::-webkit-details-marker{display:none;}
.f-links{display:flex;flex-direction:column;gap:10px;}
.f-links a{font-size:14px;color:var(--t-dark-sub);transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);display:inline-block;}
.f-links a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:var(--t-weak);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--t-dark-sub);min-height:44px;}
.to-top:hover{color:#fff;}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 响应式 ============ */
@media (min-width:768px){
  h1{font-size:44px;}
  h2{font-size:28px;}
  .section{padding:72px 0;}
}
@media (min-width:1024px){
  .mobile-bar{display:none;}
}
@media (max-width:1279px) and (min-width:1024px){
  :root{--side-w:88px;}
  .logo-text,.nav-label{display:none;}
  .sb-logo{justify-content:center;}
  .side-nav{padding:16px 12px;}
  .nav-item{justify-content:center;padding:0;}
  .side-tip{
    display:block;position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--ink-800);color:#fff;border:1px solid var(--line-dark);
    padding:6px 12px;border-radius:12px;font-size:13px;white-space:nowrap;
    opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
    pointer-events:none;
  }
  .nav-item:hover .side-tip{opacity:1;visibility:visible;}
  .sb-cta .btn span{display:none;}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .mobile-bar{display:flex;}
  .main{margin-left:0;padding-top:var(--topbar-h);padding-bottom:110px;}
  .site-footer{margin-left:0;}
  .sticky-cta{left:0;height:56px;padding:0 16px;}
  .sticky-cta .sc-text small{display:none;}
  .ph-inner{grid-template-columns:1fr;gap:28px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .figure-stack .fs-float{position:static;width:100%;margin-top:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
}
@media (max-width:639px){
  h1{font-size:34px;}
  h2{font-size:24px;}
  .section{padding:56px 0;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:24px;}
  .sticky-cta{gap:12px;}
  .sticky-cta .sc-text{font-size:14px;}
  .card-lg{padding:22px;}
  .tl-item{padding-left:48px;}
  .tl-step{left:28px;font-size:22px;}
  .tl-item::before{left:9px;}
  .tl-dot{left:2px;}
  .page-hero{padding:28px 0 36px;}
}

/* roulang page: article */
:root{
  --ink-900:#0B0D14;
  --ink-800:#141726;
  --line-dark:rgba(255,255,255,.10);
  --primary-600:#5B3DF5;
  --primary-700:#4628D6;
  --primary-400:#8C74FF;
  --accent-500:#FF6B2C;
  --mint-400:#16E0B8;
  --bg-050:#F6F7FB;
  --card:#FFFFFF;
  --line-200:#E4E6EF;
  --t1:#14161F;
  --t2:#5A5F72;
  --t3:#8B90A3;
  --t-dark1:#F2F3F8;
  --t-dark2:#A8ADC4;
  --ok:#16E0B8;
  --warn:#FFB020;
  --err:#F0453A;
  --r-xs:6px;
  --r-sm:8px;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(17,20,35,.04),0 8px 24px -12px rgba(17,20,35,.12);
  --sh-2:0 12px 32px -12px rgba(91,61,245,.28);
  --dur:180ms;
  --sidebar-w:240px;
  --bar-h:56px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t1);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid rgba(91,61,245,.35);outline-offset:2px;border-radius:6px}
::selection{background:rgba(91,61,245,.25)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(20,22,31,.18);border-radius:99px}
.sidebar ::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18)}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 左侧 App Shell ============ */
.sidebar{
  position:fixed;left:0;top:0;z-index:60;
  width:var(--sidebar-w);height:100vh;
  background:var(--ink-900);
  display:flex;flex-direction:column;
  border-right:1px solid var(--line-dark);
}
.side-logo{
  height:72px;flex:0 0 72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--line-dark);
}
.logo-mark{
  display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;
  border-radius:10px;background:linear-gradient(135deg,var(--primary-600),var(--primary-400));
  color:#fff;font-weight:800;font-size:16px;
}
.logo-text{color:#fff;font-weight:700;font-size:16px;letter-spacing:.01em;white-space:nowrap}
.side-nav{flex:1;display:flex;flex-direction:column;gap:4px;padding:14px 12px;overflow-y:auto;overflow-x:hidden}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:var(--r-btn);
  color:var(--t-dark2);font-size:14px;
  transition:background var(--dur) ease,color var(--dur) ease;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(91,61,245,.18);color:#fff}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--mint-400);
}
.nav-ico{flex:0 0 20px;display:grid;place-items:center}
.nav-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.nav-label{white-space:nowrap}
.side-tip{display:none}
.side-foot{padding:14px 12px 18px;border-top:1px solid var(--line-dark)}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 14px;border-radius:var(--r-btn);
  background:linear-gradient(135deg,#FF7A3D,var(--accent-500));
  color:#fff;font-size:14px;font-weight:600;
  transition:filter var(--dur) ease,transform var(--dur) ease;
}
.side-cta:hover{filter:brightness(1.06);transform:translateY(-1px)}
.side-cta:active{transform:translateY(0) scale(.99)}
.side-cta svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ============ 移动顶栏与抽屉 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--bar-h);z-index:70;
  align-items:center;justify-content:space-between;gap:12px;padding:0 12px;
  background:rgba(11,13,20,.86);border-bottom:1px solid var(--line-dark);
  transition:background var(--dur) ease,backdrop-filter var(--dur) ease;
}
.mobile-bar.is-scrolled{background:rgba(11,13,20,.96);backdrop-filter:blur(8px)}
.burger{width:44px;height:44px;display:grid;place-items:center;border-radius:10px}
.burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;margin:3px 0;transition:transform var(--dur) ease,opacity var(--dur) ease}
.m-brand{display:flex;align-items:center;gap:8px;color:#fff;font-weight:700;font-size:15px}
.m-brand .logo-mark{width:28px;height:28px;flex:0 0 28px;border-radius:8px;font-size:14px}
.m-cta{
  width:44px;height:44px;display:grid;place-items:center;border-radius:10px;
  background:linear-gradient(135deg,#FF7A3D,var(--accent-500));
}
.m-cta svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.drawer-mask{
  position:fixed;inset:0;z-index:55;background:rgba(11,13,20,.6);
  opacity:0;visibility:hidden;transition:opacity var(--dur) ease,visibility var(--dur) ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 主内容 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;padding-bottom:88px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;border-radius:10px;z-index:99}
.skip:focus{left:12px;top:12px}

/* ============ 文章头部（深场） ============ */
.article-hero{
  position:relative;overflow:hidden;background:var(--ink-900);color:var(--t-dark1);
  border-bottom:1px solid var(--line-dark);
  padding:36px 0 44px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:48px 48px;opacity:.5;
}
.article-hero::after{
  content:"";position:absolute;width:460px;height:460px;right:-140px;top:-180px;pointer-events:none;
  background:radial-gradient(circle,rgba(91,61,245,.30),transparent 68%);
}
.hero-inner{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-dark2);margin-bottom:14px}
.breadcrumb a{color:var(--t-dark2);transition:color var(--dur) ease}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.28)}
.breadcrumb .current{color:var(--t3)}
.badge-corner{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px 0 14px;
  background:var(--primary-600);color:#fff;font-size:12px;letter-spacing:.02em;font-weight:600;
  clip-path:polygon(8px 0,100% 0,100% 100%,0 100%,0 8px);
}
.badge-corner.accent{background:var(--accent-500)}
.badge-corner.mint{background:rgba(22,224,184,.16);color:var(--mint-400)}
.article-title{
  font-size:36px;line-height:1.3;font-weight:700;letter-spacing:-.01em;
  margin:16px 0 0;color:#fff;max-width:900px;
  text-shadow:0 1px 0 rgba(255,255,255,.06);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:18px;padding-top:18px;
  border-top:1px solid var(--line-dark);font-size:13px;color:var(--t-dark2);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.28)}
.meta-row b{color:#fff;font-weight:600}

/* ============ 布局 ============ */
.article-wrap{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;
  width:100%;max-width:1128px;margin:0 auto;padding:48px 24px 0;align-items:start;
}
.article-panel{
  min-width:0;background:var(--card);border:1px solid var(--line-200);
  border-radius:var(--r-lg);padding:40px;box-shadow:var(--sh-1);
}
.panel{background:var(--card);border:1px solid var(--line-200);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1)}
.panel-title{font-size:13px;letter-spacing:.06em;font-weight:700;color:var(--t3);margin-bottom:14px}

/* 移动目录 */
.toc-mobile{display:none;border:1px solid var(--line-200);border-radius:12px;background:var(--bg-050);margin-bottom:24px}
.toc-mobile summary{
  list-style:none;cursor:pointer;min-height:48px;display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;font-size:14px;font-weight:600;color:var(--t1);
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"+";font-size:18px;color:var(--primary-600);transition:transform var(--dur) ease}
.toc-mobile[open] summary::after{transform:rotate(45deg)}
.toc-mobile ul{padding:6px 12px 14px}

/* ============ 正文排版 ============ */
.article-body{font-size:17px;line-height:1.85;color:var(--t1);word-break:break-word;overflow-wrap:anywhere}
.article-body > p{margin:0 0 1.15em}
.article-body > p:first-child{
  background:var(--bg-050);border-left:3px solid var(--primary-600);
  padding:16px 20px;border-radius:0 12px 12px 0;margin-bottom:1.4em;
}
.article-body h2{
  font-size:24px;font-weight:700;line-height:1.4;margin:40px 0 16px;
  padding-left:12px;border-left:4px solid var(--primary-600);
}
.article-body h3{font-size:19px;font-weight:600;line-height:1.45;margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--t2)}
.article-body ul{list-style:disc;padding-left:22px;margin:0 0 1.15em}
.article-body ol{list-style:decimal;padding-left:22px;margin:0 0 1.15em}
.article-body li{line-height:1.8;margin:6px 0}
.article-body li::marker{color:var(--primary-600);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--mint-400);
  background:rgba(22,224,184,.06);border-radius:0 12px 12px 0;color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-card);margin:24px auto;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:8px}
.article-body a{color:var(--primary-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--primary-700)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line-200)}
.article-body th,.article-body td{border:1px solid var(--line-200);padding:10px 14px;text-align:left}
.article-body th{background:var(--bg-050);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(20,22,31,.02)}
.article-body code{
  background:rgba(91,61,245,.08);color:var(--primary-700);
  padding:2px 6px;border-radius:var(--r-xs);font-size:.92em;
}
.article-body pre{
  background:var(--ink-900);color:#E9EAF3;padding:16px 18px;border-radius:12px;
  overflow-x:auto;margin:24px 0;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:none;border-top:1px solid var(--line-200);margin:32px 0}

/* 空态 */
.empty-state{text-align:center;padding:48px 16px}
.empty-ico{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  display:grid;place-items:center;background:linear-gradient(135deg,rgba(91,61,245,.12),rgba(22,224,184,.14));
  color:var(--primary-600);
}
.empty-ico svg{width:30px;height:30px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:8px}
.empty-state p{color:var(--t2);font-size:15px;margin-bottom:20px}

/* 文末 */
.article-foot{margin-top:36px;padding-top:24px;border-top:1px solid var(--line-200)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--bg-050);border:1px solid var(--line-200);font-size:13px;color:var(--t2);
  transition:border-color var(--dur) ease,color var(--dur) ease,background var(--dur) ease;
}
.tag:hover{border-color:rgba(91,61,245,.35);color:var(--primary-600);background:#fff}
.foot-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.icon-group{display:flex;gap:10px}
.icon-btn{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line-200);background:#fff;color:var(--t2);
  transition:color var(--dur) ease,border-color var(--dur) ease,background var(--dur) ease,transform var(--dur) ease;
}
.icon-btn:hover{color:var(--primary-600);border-color:rgba(91,61,245,.35);background:rgba(91,61,245,.05);transform:translateY(-1px)}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:filter var(--dur) ease,transform var(--dur) ease,background var(--dur) ease,border-color var(--dur) ease,color var(--dur) ease;
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:linear-gradient(135deg,var(--primary-600),var(--primary-400));color:#fff}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{border-color:rgba(91,61,245,.6);color:var(--primary-600);background:transparent}
.btn-ghost:hover{background:rgba(91,61,245,.08)}
.btn-accent{background:linear-gradient(135deg,#FF7A3D,var(--accent-500));color:#fff}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0) scale(.99)}
.btn-text{min-height:44px;padding:0 8px;color:var(--primary-600);background:none;border:none}
.btn-text:hover{color:var(--primary-700)}
.link-mint{position:relative;display:inline-flex;align-items:center;gap:6px;color:var(--primary-600);font-size:14px;font-weight:600}
.link-mint::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--mint-400);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) ease;
}
.link-mint:hover::after{transform:scaleX(1)}
.link-mint svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--dur) ease}
.link-mint:hover svg{transform:translateX(4px)}

/* ============ 右侧粘性栏 ============ */
.side-col{position:relative}
.side-sticky{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow-y:auto}
.toc-list a{
  display:block;padding:8px 10px;border-left:3px solid transparent;border-radius:0 8px 8px 0;
  font-size:14px;color:var(--t2);line-height:1.5;
  transition:color var(--dur) ease,background var(--dur) ease,border-color var(--dur) ease;
}
.toc-list a:hover{color:var(--primary-600);background:var(--bg-050)}
.toc-list a.is-active{color:var(--primary-600);font-weight:600;border-left-color:var(--primary-600);background:rgba(91,61,245,.05)}
.cat-links{display:flex;flex-direction:column;gap:8px}
.cat-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:44px;padding:0 14px;border-radius:10px;background:var(--bg-050);
  font-size:14px;color:var(--t2);border:1px solid transparent;
  transition:border-color var(--dur) ease,color var(--dur) ease,background var(--dur) ease;
}
.cat-links a:hover{border-color:rgba(91,61,245,.35);color:var(--primary-600);background:#fff}
.cat-links a svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ============ 数据横条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--card);border:1px solid var(--line-200);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.stat-item{padding:20px 24px;border-right:1px solid var(--line-200)}
.stat-item:last-child{border-right:none}
.stat-num{font-size:26px;font-weight:800;letter-spacing:-.01em;color:var(--primary-600);line-height:1.2}
.stat-num.mint{color:#0FBF9E}
.stat-num.accent{color:var(--accent-500)}
.stat-label{font-size:13px;color:var(--t3);margin-top:4px}

/* ============ 相关推荐 ============ */
.section{padding:64px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-title{font-size:24px;font-weight:700;letter-spacing:-.01em}
.section-sub{font-size:14px;color:var(--t2);margin-top:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--card);
  border:1px solid var(--line-200);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform var(--dur) ease,box-shadow var(--dur) ease,border-color var(--dur) ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.35)}
.thumb{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(135deg,rgba(91,61,245,.85),rgba(22,224,184,.65));
}
.thumb img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.thumb img.img-fail{display:none}
.thumb-fallback{
  position:absolute;inset:0;z-index:0;display:grid;place-items:center;
  color:rgba(255,255,255,.7);font-size:40px;font-weight:800;letter-spacing:.05em;
}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-excerpt{font-size:14px;color:var(--t2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:8px}
.card-date{font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums}

/* ============ 底部 CTA 卡 ============ */
.cta-card{
  position:relative;overflow:hidden;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:var(--ink-900);color:#fff;border-radius:var(--r-lg);padding:32px;border:1px solid var(--line-dark);
}
.cta-card::after{
  content:"";position:absolute;width:320px;height:320px;right:-100px;bottom:-160px;
  background:radial-gradient(circle,rgba(255,107,44,.24),transparent 70%);pointer-events:none;
}
.cta-text-strong{font-size:20px;font-weight:700;position:relative;z-index:1}
.cta-text-sub{font-size:14px;color:var(--t-dark2);margin-top:6px;position:relative;z-index:1}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:var(--sidebar-w);right:0;bottom:0;z-index:50;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 32px;background:rgba(11,13,20,.92);border-top:1px solid var(--mint-400);color:var(--t-dark1);
}
.sticky-cta .tip{font-size:14px;color:#E7E9F3}
.sticky-cta .tip b{color:#fff;font-weight:600}
.sticky-short{display:none}
.sticky-cta .btn{min-height:44px;padding:0 20px;font-size:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:var(--t-dark2);padding:64px 0 104px;margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.f-brand .logo-text{font-size:16px}
.f-desc{font-size:14px;line-height:1.75;color:var(--t-dark2);max-width:330px}
.f-group summary{
  list-style:none;cursor:pointer;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:#fff;margin-bottom:14px;min-height:24px;
}
.f-group summary::-webkit-details-marker{display:none}
.f-links{display:flex;flex-direction:column;gap:10px}
.f-links a{font-size:14px;color:var(--t-dark2);transition:color var(--dur) ease,transform var(--dur) ease}
.f-links a:hover{color:#fff;transform:translateX(-2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-dark);
  font-size:13px;color:var(--t3);
}
.to-top{display:inline-flex;align-items:center;gap:6px;min-height:44px;color:var(--t-dark2);transition:color var(--dur) ease}
.to-top:hover{color:#fff}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .main{margin-left:88px}
  .sticky-cta{left:88px}
  .sidebar{width:88px}
  .side-logo{justify-content:center;padding:0}
  .side-logo .logo-text{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-label{display:none}
  .side-cta{padding:0}
  .side-cta .cta-text{display:none}
  .side-tip{
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(-6px);
    display:block;padding:8px 12px;border-radius:12px;background:var(--ink-800);
    border:1px solid rgba(255,255,255,.14);color:#fff;font-size:13px;white-space:nowrap;
    opacity:0;visibility:hidden;transition:opacity var(--dur) ease,transform var(--dur) ease,visibility var(--dur) ease;
    box-shadow:0 12px 28px -14px rgba(0,0,0,.7);
  }
  .nav-item:hover .side-tip{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
}
@media (max-width:1023px){
  .mobile-bar{display:flex}
  .sidebar{width:280px;transform:translateX(-100%);transition:transform 240ms ease;box-shadow:24px 0 60px -24px rgba(0,0,0,.6)}
  .sidebar.is-open{transform:translateX(0)}
  .side-logo{justify-content:flex-start;padding:0 18px}
  .side-logo .logo-text{display:block}
  .nav-item{justify-content:flex-start;padding:0 12px}
  .nav-label{display:inline}
  .side-cta{padding:0 14px}
  .side-cta .cta-text{display:inline}
  .side-tip{display:none}
  .main{margin-left:0;padding-top:var(--bar-h);padding-bottom:76px}
  .sticky-cta{left:0;height:56px;padding:0 16px}
  .article-wrap{grid-template-columns:minmax(0,1fr);gap:28px;padding:28px 20px 0}
  .article-panel{padding:24px 20px;border-radius:var(--r-card)}
  .side-col{display:none}
  .toc-mobile{display:block}
  .article-hero{padding:26px 0 32px}
  .article-title{font-size:26px}
  .section{padding:44px 0 0}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:none}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line-200)}
  .footer-grid{grid-template-columns:1fr;gap:8px}
  .f-group{border-bottom:1px solid var(--line-dark);padding-bottom:8px}
  .f-group summary{margin:14px 0 0}
  .f-brand-wrap{margin-bottom:18px}
  .site-footer{padding:48px 0 88px;margin-top:52px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:20px;margin:32px 0 12px}
  .article-body h3{font-size:17px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .cta-card{padding:24px 20px}
  .cta-text-strong{font-size:18px}
  .sticky-cta .tip{font-size:13px}
  .sticky-long{display:none}
  .sticky-short{display:inline}
  .stat-num{font-size:22px}
  .footer-bottom{font-size:12px}
  .foot-actions{align-items:stretch}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --ink-900:#0B0D14;
  --ink-800:#141726;
  --primary-600:#5B3DF5;
  --primary-700:#4628D6;
  --primary-400:#8C74FF;
  --accent-500:#FF6B2C;
  --mint-400:#16E0B8;
  --bg-050:#F6F7FB;
  --line-200:#E4E6EF;
  --text-100:#14161F;
  --text-200:#5A5F72;
  --text-300:#8B90A3;
  --dark-100:#F2F3F8;
  --dark-200:#A8ADC4;
  --warn:#FFB020;
  --err:#F0453A;
  --r-sm:8px;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(17,20,35,.04),0 8px 24px -12px rgba(17,20,35,.12);
  --sh-2:0 12px 32px -12px rgba(91,61,245,.28);
  --t:180ms cubic-bezier(.4,0,.2,1);
  --sec:96px;
  --side:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-100);
  background:#FFFFFF;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit}
button{font:inherit}
.num,time,.tabular{font-variant-numeric:tabular-nums}
::selection{background:rgba(91,61,245,.25)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(91,61,245,.35);outline-offset:2px;border-radius:8px}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(20,22,31,.18);border-radius:8px}
.sidebar ::-webkit-scrollbar-thumb,.site-footer ::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18)}

/* ---------- 布局骨架 ---------- */
.shell{min-height:100vh}
.main{
  margin-left:var(--side);
  padding-bottom:104px;
  min-width:0;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side);
  background:var(--ink-900);
  border-right:1px solid rgba(255,255,255,.10);
  display:flex;
  flex-direction:column;
  z-index:60;
}
.sidebar-head{
  height:72px;
  flex:0 0 72px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 20px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary-600),var(--primary-400));
  color:#fff;font-size:16px;font-weight:800;
  display:grid;place-items:center;
  letter-spacing:0;
}
.logo-text{color:#fff;font-size:15px;font-weight:700;white-space:nowrap;letter-spacing:.01em}
.side-nav{
  flex:1 1 auto;
  overflow-y:auto;
  padding:16px 12px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 12px;
  border-radius:var(--r-btn);
  color:var(--dark-200);
  font-size:14px;
  text-decoration:none;
  transition:background var(--t),color var(--t);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(91,61,245,.18);color:#fff}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;border-radius:2px;
  background:var(--mint-400);
}
.nav-ico{display:grid;place-items:center;width:22px;height:22px;flex:0 0 22px}
.nav-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.nav-label{white-space:nowrap}
.side-tip{display:none}
.sidebar-foot{
  padding:16px 12px 20px;
  border-top:1px solid rgba(255,255,255,.10);
}
.side-cta{
  display:flex;align-items:center;justify-content:center;
  width:100%;min-height:48px;padding:0 16px;
  border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--accent-500),#FF8F4D);
  color:#fff;font-size:15px;font-weight:700;text-decoration:none;
  transition:filter var(--t),transform var(--t);
}
.side-cta:hover{filter:brightness(1.06);transform:translateY(-1px)}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  align-items:center;justify-content:space-between;
  gap:12px;
  padding:0 12px;
  background:rgba(11,13,20,.92);
  border-bottom:1px solid rgba(255,255,255,.12);
  z-index:70;
}
.topbar.is-scrolled{backdrop-filter:blur(8px);background:rgba(11,13,20,.97)}
.burger{
  width:44px;height:44px;
  display:grid;place-items:center;
  background:transparent;border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-btn);color:#fff;cursor:pointer;
}
.burger svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.topbar-brand{color:#fff;font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-cta{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--accent-500),#FF8F4D);
  color:#fff;
}
.topbar-cta svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

.drawer-mask{
  position:fixed;inset:0;
  background:rgba(11,13,20,.6);
  opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;
  width:280px;
  background:var(--ink-900);
  border-right:1px solid rgba(255,255,255,.10);
  transform:translateX(-100%);
  transition:transform 220ms cubic-bezier(.4,0,.2,1);
  z-index:90;
  display:flex;flex-direction:column;
  padding:16px 12px 20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:10px;padding:6px 8px 16px;border-bottom:1px solid rgba(255,255,255,.10);margin-bottom:12px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;flex:1 1 auto;overflow-y:auto}
.drawer-cta{margin-top:16px}

/* ---------- 页头带 ---------- */
.page-head{
  position:relative;
  background:var(--ink-900);
  color:var(--dark-100);
  overflow:hidden;
  padding:56px 0 48px;
}
.page-head::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.55;
  pointer-events:none;
}
.page-head::after{
  content:"";
  position:absolute;
  top:-160px;right:-120px;
  width:520px;height:520px;
  background:radial-gradient(circle,rgba(91,61,245,.18),transparent 68%);
  pointer-events:none;
}
.head-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr);
  gap:48px;
  align-items:center;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dark-200);margin-bottom:14px}
.crumb a{color:var(--dark-200);text-decoration:none;transition:color var(--t)}
.crumb a:hover{color:#fff}
.crumb span{color:rgba(168,173,196,.6)}
.crumb-cur{color:var(--text-300)}
.page-title{
  margin:0 0 14px;
  font-size:34px;
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
  text-shadow:0 1px 0 rgba(255,255,255,.06);
}
.page-sub{
  margin:0 0 22px;
  font-size:16px;
  color:var(--dark-200);
  max-width:32em;
}
.head-chips{display:flex;flex-wrap:wrap;gap:10px}
.chip-chip{
  display:inline-flex;align-items:center;
  height:30px;padding:0 12px;
  font-size:12px;letter-spacing:.02em;
  border-radius:var(--r-sm);
  background:rgba(91,61,245,.18);
  color:var(--mint-400);
}
.chip-chip.is-plain{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  color:var(--dark-100);
}
.fold-tag{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  color:#fff;
  background:var(--primary-600);
  clip-path:polygon(8px 0,100% 0,100% 100%,8px 100%,0 50%);
}
.head-media{position:relative}
.head-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid rgba(255,255,255,.10);
  background:linear-gradient(135deg,rgba(91,61,245,.35),rgba(22,224,184,.18));
}
.head-media img.is-dead{display:none}
.head-media::after{
  content:"分类索引";
  position:absolute;left:16px;bottom:16px;
  font-size:12px;letter-spacing:.06em;
  color:#fff;
  background:rgba(11,13,20,.72);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-sm);
  padding:4px 10px;
}

/* ---------- 区块通用 ---------- */
.section{margin-top:var(--sec)}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
}
.sec-title{
  position:relative;
  margin:0 0 8px;
  padding-left:16px;
  font-size:24px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
}
.sec-title::before{
  content:"";
  position:absolute;left:0;top:.28em;
  width:4px;height:.92em;
  border-radius:2px;
  background:var(--primary-600);
}
.sec-desc{
  margin:0;
  padding-left:16px;
  font-size:14px;
  color:var(--text-200);
  max-width:60em;
}
.link-mint{
  position:relative;
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;
  color:var(--primary-600);
  text-decoration:none;
  padding-bottom:2px;
}
.link-mint::after{
  content:"";
  position:absolute;left:0;bottom:0;
  width:100%;height:2px;
  background:var(--mint-400);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
}
.link-mint:hover::after{transform:scaleX(1)}
.link-mint svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--t)}
.link-mint:hover svg{transform:translateX(4px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  font-size:15px;font-weight:600;
  text-decoration:none;cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),filter var(--t);
}
.btn-primary{background:linear-gradient(135deg,var(--primary-600),var(--primary-400));color:#fff}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent{background:linear-gradient(135deg,var(--accent-500),#FF8F4D);color:#fff}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 32px -12px rgba(255,107,44,.45)}
.btn-ghost{background:transparent;border-color:currentColor;color:var(--primary-600)}
.btn-ghost:hover{background:rgba(91,61,245,.08)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.10)}
.btn:active{transform:translateY(0) scale(.99)}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px}

/* ---------- 对照表 ---------- */
.table-wrap{
  border:1px solid var(--line-200);
  border-radius:var(--r-card);
  background:#fff;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.cmp-table{width:100%;border-collapse:collapse;font-size:15px}
.cmp-table thead th{
  background:var(--bg-050);
  text-align:left;
  padding:14px 18px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--text-200);
  border-bottom:1px solid var(--line-200);
  white-space:nowrap;
}
.cmp-table td{
  padding:16px 18px;
  border-bottom:1px solid var(--line-200);
  vertical-align:top;
  color:var(--text-200);
  line-height:1.7;
}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr{transition:background var(--t)}
.cmp-table tbody tr:hover{background:rgba(91,61,245,.03)}
.cmp-table td:first-child{
  color:var(--text-100);
  font-weight:600;
  white-space:nowrap;
}
.td-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:24px;height:24px;margin-right:8px;
  border-radius:6px;
  background:rgba(255,107,44,.12);
  color:var(--accent-500);
  font-size:12px;font-weight:700;
}
.table-note{
  margin:14px 0 0;
  font-size:13px;
  color:var(--text-300);
}

/* ---------- 要点清单 ---------- */
.check-panel{
  border:1px solid var(--line-200);
  border-radius:var(--r-lg);
  background:#fff;
  box-shadow:var(--sh-1);
  padding:32px;
}
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:16px}
.check-list li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--text-200)}
.check-list svg{flex:0 0 24px;width:24px;height:24px;fill:none;stroke:var(--mint-400);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;margin-top:3px}
.check-list strong{color:var(--text-100);font-weight:600}

/* ---------- 双栏对照 ---------- */
.dual-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.path-card{
  border:1px solid var(--line-200);
  border-radius:var(--r-lg);
  background:#fff;
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  display:flex;flex-direction:column;
}
.path-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.35)}
.path-media{position:relative;background:linear-gradient(135deg,rgba(91,61,245,.3),rgba(22,224,184,.16))}
.path-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.path-media img.is-dead{display:none}
.path-media .fold-tag{position:absolute;top:14px;left:14px;background:var(--accent-500)}
.path-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.path-body h3{margin:0;font-size:18px;font-weight:600;line-height:1.4}
.path-body p{margin:0;font-size:14.5px;color:var(--text-200)}
.mini-list{list-style:none;margin:4px 0 0;padding:0;display:grid;gap:8px}
.mini-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-200)}
.mini-list li::before{
  content:"";
  position:absolute;left:0;top:.62em;
  width:6px;height:6px;border-radius:2px;
  background:var(--primary-400);
}

/* ---------- 编号对齐条 ---------- */
.dim-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border:1px solid var(--line-200);
  border-radius:var(--r-card);
  background:#fff;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.dim-cell{padding:22px 24px;border-right:1px solid var(--line-200)}
.dim-cell:last-child{border-right:0}
.dim-num{
  font-size:26px;font-weight:800;
  color:transparent;
  -webkit-text-stroke:1px rgba(91,61,245,.55);
  line-height:1;
  font-variant-numeric:tabular-nums;
}
.dim-label{margin-top:8px;font-size:14px;font-weight:600}
.dim-text{margin-top:4px;font-size:13px;color:var(--text-300)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{
  position:relative;
  border:1px solid var(--line-200);
  border-radius:12px;
  background:#fff;
  overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.faq-item[open]{border-color:rgba(91,61,245,.35);background:rgba(91,61,245,.05)}
.faq-item[open]::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;
  width:3px;background:var(--primary-600);
}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;
  padding:8px 20px;
  cursor:pointer;
  list-style:none;
  font-size:15.5px;
  font-weight:600;
  color:var(--text-100);
}
.faq-q::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary-600);border-radius:2px;
  transition:transform var(--t),opacity var(--t);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{
  margin:0;
  padding:0 20px 20px 20px;
  font-size:14.5px;
  color:var(--text-200);
  line-height:1.8;
}

/* ---------- CTA 卡 ---------- */
.cta-card{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:36px 40px;
  border-radius:var(--r-lg);
  background:var(--ink-900);
  color:#fff;
  overflow:hidden;
}
.cta-card::after{
  content:"";
  position:absolute;top:-120px;right:-80px;
  width:380px;height:380px;
  background:radial-gradient(circle,rgba(255,107,44,.18),transparent 70%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:34em}
.cta-copy h2{margin:0 0 8px;font-size:22px;font-weight:700;line-height:1.4;letter-spacing:-.01em}
.cta-copy p{margin:0;font-size:14.5px;color:var(--dark-200)}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 底部转化条 ---------- */
.sticky-cta{
  position:fixed;
  left:var(--side);right:0;bottom:0;
  min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:8px 24px;
  background:rgba(11,13,20,.94);
  border-top:1px solid var(--mint-400);
  z-index:55;
}
.sticky-text{font-size:14px;color:var(--dark-100);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky-text strong{color:#fff;font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sec);
  background:var(--ink-900);
  color:var(--dark-200);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:44px;
}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.f-desc{margin:0;font-size:14px;color:var(--dark-200);max-width:26em;line-height:1.8}
.f-group{border:0}
.f-group summary{
  display:flex;align-items:center;justify-content:space-between;
  cursor:pointer;list-style:none;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:#fff;margin-bottom:14px;
}
.f-group summary::-webkit-details-marker{display:none}
.f-links{display:flex;flex-direction:column;gap:10px}
.f-links a{
  font-size:14px;color:var(--dark-200);text-decoration:none;
  transition:color var(--t),transform var(--t);
  align-self:flex-start;
}
.f-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 24px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;
  color:var(--text-300);
  flex-wrap:wrap;
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;
  min-height:44px;padding:0 12px;
  color:var(--dark-200);text-decoration:none;
  border-radius:var(--r-sm);
  transition:color var(--t),background var(--t);
}
.to-top:hover{color:#fff;background:rgba(255,255,255,.06)}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--side:88px}
  .sidebar-head{justify-content:center;padding:0}
  .logo-text,.nav-label{display:none}
  .nav-item{justify-content:center;padding:0}
  .side-cta{font-size:0;padding:0}
  .side-cta::after{content:"进入";font-size:13px}
  .side-tip{
    display:block;
    position:absolute;
    left:calc(100% + 12px);
    top:50%;
    transform:translateY(-50%) translateX(-4px);
    opacity:0;
    pointer-events:none;
    background:var(--ink-800);
    border:1px solid rgba(255,255,255,.16);
    color:#fff;
    font-size:13px;
    padding:6px 10px;
    border-radius:12px;
    white-space:nowrap;
    transition:opacity var(--t),transform var(--t);
    z-index:70;
  }
  .nav-item:hover .side-tip{opacity:1;transform:translateY(-50%) translateX(0)}
}
@media (min-width:1280px){
  .side-tip{display:none}
}
@media (max-width:1023.98px){
  :root{--sec:72px}
  .sidebar{display:none}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px;padding-bottom:92px}
  .sticky-cta{left:0;right:0;min-height:56px;padding:8px 16px}
  .head-grid{grid-template-columns:1fr;gap:28px}
  .head-media{order:-1}
  .head-media img{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .dim-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dim-cell:nth-child(2n){border-right:0}
  .dim-cell{border-bottom:1px solid var(--line-200)}
  .dim-cell:nth-last-child(-n+2){border-bottom:0}
}
@media (max-width:767.98px){
  .page-title{font-size:30px}
  .sec-title{font-size:22px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .check-panel{padding:24px}
  .dual-grid{grid-template-columns:1fr}
  .cta-card{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .cta-copy h2{font-size:20px}
  .sticky-text{font-size:13px}
  .sticky-text .hide-sm{display:none}
  .cmp-table thead{display:none}
  .cmp-table tbody tr{display:block;padding:6px 0;border-bottom:1px solid var(--line-200)}
  .cmp-table tbody tr:last-child{border-bottom:0}
  .cmp-table td{display:block;border:0;padding:6px 16px}
  .cmp-table td::before{
    content:attr(data-label);
    display:block;
    font-size:12px;
    letter-spacing:.04em;
    color:var(--text-300);
    margin-bottom:2px;
  }
  .cmp-table td:first-child{white-space:normal}
}
@media (max-width:519.98px){
  :root{--sec:56px}
  .container{padding:0 18px}
  .page-head{padding:40px 0 36px}
  .page-title{font-size:27px}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .f-group{border-top:1px solid rgba(255,255,255,.10);padding:16px 0}
  .f-group:first-of-type{border-top:0}
  .f-brand-wrap{padding-bottom:20px}
  .dim-strip{grid-template-columns:1fr}
  .dim-cell{border-right:0}
  .dim-cell:nth-last-child(-n+2){border-bottom:1px solid var(--line-200)}
  .dim-cell:last-child{border-bottom:0}
  .btn{width:100%}
  .cta-actions{width:100%}
  .sticky-cta .btn{width:auto;min-height:44px;padding:0 16px;font-size:14px}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B0D14;
  --ink-800:#141726;
  --ink-line:rgba(255,255,255,.10);
  --primary-600:#5B3DF5;
  --primary-700:#4628D6;
  --primary-400:#8C74FF;
  --accent-500:#FF6B2C;
  --mint-400:#16E0B8;
  --bg-050:#F6F7FB;
  --white:#FFFFFF;
  --line-200:#E4E6EF;
  --t-1:#14161F;
  --t-2:#5A5F72;
  --t-3:#8B90A3;
  --d-1:#F2F3F8;
  --d-2:#A8ADC4;
  --r-sm:8px;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(17,20,35,.04), 0 8px 24px -12px rgba(17,20,35,.12);
  --sh-2:0 12px 32px -12px rgba(91,61,245,.28);
  --dur:.18s;
  --side:240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t-1);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:3px solid rgba(91,61,245,.35);outline-offset:2px;border-radius:6px}
::selection{background:rgba(91,61,245,.25)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(20,22,31,.18);border-radius:8px}
.side-links::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18)}

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

/* ---------- 布局 ---------- */
.layout{margin-left:var(--side);padding-bottom:96px}
.main{display:block}

/* ---------- 侧边导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:var(--side);height:100vh;
  background:var(--ink-900);display:flex;flex-direction:column;z-index:60;
  border-right:1px solid var(--ink-line);
}
.side-brand{
  height:72px;display:flex;align-items:center;gap:10px;padding:0 20px;
  border-bottom:1px solid var(--ink-line);flex:none;
}
.logo-mark{
  width:34px;height:34px;flex:none;border-radius:9px;
  background:linear-gradient(135deg,var(--primary-600),var(--primary-400));
  color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;
  font-size:17px;letter-spacing:0;
}
.logo-text{color:var(--d-1);font-weight:700;font-size:15.5px;letter-spacing:.01em;white-space:nowrap}
.side-links{
  flex:1;overflow-y:auto;overflow-x:hidden;padding:14px 12px;
  display:flex;flex-direction:column;gap:6px;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;
  padding:0 12px;border-radius:10px;color:var(--d-2);
  font-size:14.5px;transition:background var(--dur),color var(--dur);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(91,61,245,.18);color:#fff}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:2px;background:var(--mint-400);
}
.nav-ico{width:20px;height:20px;flex:none}
.nav-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.nav-label{white-space:nowrap}
.side-tip{display:none}
.side-foot{padding:14px 12px 18px;border-top:1px solid var(--ink-line);flex:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform var(--dur),box-shadow var(--dur),background var(--dur),color var(--dur),border-color var(--dur);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary-600),var(--primary-400));
  color:#fff;box-shadow:0 10px 26px -14px rgba(91,61,245,.7);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-accent{
  background:linear-gradient(135deg,#FF7A3D,var(--accent-500));
  color:#fff;box-shadow:0 10px 26px -14px rgba(255,107,44,.75);
}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0) scale(.99)}
.btn-ghost{
  border:1.5px solid rgba(255,255,255,.5);color:#fff;background:transparent;
}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-outline{
  border:1.5px solid var(--primary-600);color:var(--primary-700);background:transparent;
}
.btn-outline:hover{background:rgba(91,61,245,.08)}
.btn-sm{min-height:44px;padding:0 20px;font-size:14px;border-radius:var(--r-btn)}
.tlink{position:relative;font-weight:600;color:var(--primary-700);display:inline-flex;align-items:center;gap:6px}
.tlink::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;
  background:var(--mint-400);transition:width var(--dur);
}
.tlink:hover::after{width:100%}
.tlink svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  align-items:center;justify-content:space-between;gap:8px;padding:0 12px;
  background:rgba(11,13,20,.92);border-bottom:1px solid var(--ink-line);
  transition:backdrop-filter var(--dur),background var(--dur);
}
.topbar.is-scrolled{backdrop-filter:blur(8px);background:rgba(11,13,20,.97)}
.burger{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:10px}
.burger svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round}
.topbar-brand{display:flex;align-items:center;gap:8px;color:var(--d-1);font-weight:700;font-size:15px}
.topbar-cta{
  min-width:44px;height:44px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;background:linear-gradient(135deg,#FF7A3D,var(--accent-500));
  color:#fff;font-size:13.5px;font-weight:600;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,13,20,.6);z-index:80;
  opacity:0;visibility:hidden;transition:opacity var(--dur),visibility var(--dur);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--ink-900);z-index:90;
  transform:translateX(-100%);transition:transform .24s ease;
  display:flex;flex-direction:column;padding:16px 14px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 6px 14px;border-bottom:1px solid var(--ink-line);margin-bottom:14px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;flex:1;overflow-y:auto}
.drawer-foot{margin-top:14px}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:var(--d-1);
  padding:44px 0 52px;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;opacity:.9;pointer-events:none;
}
.page-head::after{
  content:"";position:absolute;top:-160px;right:-80px;width:460px;height:460px;pointer-events:none;
  background:radial-gradient(circle,rgba(91,61,245,.36),transparent 68%);opacity:.5;
}
.page-head .container{position:relative;z-index:1}
.head-grid{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--d-2);margin-bottom:16px}
.crumb a{color:var(--d-2);transition:color var(--dur)}
.crumb a:hover{color:#fff}
.crumb .cur{color:var(--t-3)}
.head-badge{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;margin-bottom:16px;
  font-size:12px;letter-spacing:.02em;color:var(--mint-400);
  background:rgba(91,61,245,.18);border:1px solid rgba(140,116,255,.35);
  clip-path:polygon(8px 0,100% 0,100% 100%,8px 100%,0 50%);
}
.page-head h1{font-size:34px;font-weight:800;letter-spacing:-.02em;line-height:1.15;text-shadow:0 1px 0 rgba(255,255,255,.06)}
.head-sub{margin-top:14px;font-size:15.5px;color:var(--d-2);max-width:560px}
.head-stat{display:flex;gap:28px;margin-top:26px;flex-wrap:wrap}
.head-stat .st{padding-right:28px;border-right:1px solid var(--ink-line)}
.head-stat .st:last-child{border-right:0;padding-right:0}
.head-stat .num{font-size:24px;font-weight:800;color:var(--mint-400);font-variant-numeric:tabular-nums;line-height:1.2}
.head-stat .lb{font-size:12px;color:var(--t-3);margin-top:4px}
.head-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--ink-line)}
.head-visual img{width:100%;height:230px;object-fit:cover}
.head-visual .fallback{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#1B1F35,#2A2050);color:var(--d-2);font-size:34px;font-weight:800;
}

/* ---------- 区块 ---------- */
.section{padding:64px 0}
.section.tight{padding:52px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head h2{font-size:24px;font-weight:700;letter-spacing:-.01em;position:relative;padding-left:14px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--primary-600);
}
.sec-desc{font-size:14.5px;color:var(--t-2);margin-top:10px;max-width:720px}
.panel{background:var(--white);border:1px solid var(--line-200);border-radius:var(--r-lg);box-shadow:var(--sh-1)}

/* ---------- 编号清单 ---------- */
.step-list{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line-200);border-radius:var(--r-lg);padding:8px 32px;box-shadow:var(--sh-1)}
.step-row{display:grid;grid-template-columns:128px 1fr;gap:28px;padding:30px 0;border-bottom:1px solid var(--line-200)}
.step-row:last-child{border-bottom:0}
.step-num{
  font-size:52px;font-weight:800;line-height:1;letter-spacing:-.03em;
  color:transparent;-webkit-text-stroke:1.4px rgba(91,61,245,.5);
  font-variant-numeric:tabular-nums;
}
.step-title{font-size:18px;font-weight:600;margin-bottom:8px}
.step-text{font-size:14.5px;color:var(--t-2)}
.step-meta{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;letter-spacing:.02em;background:var(--bg-050);
  border:1px solid var(--line-200);color:var(--t-2);
}
.tag-primary{background:rgba(91,61,245,.1);border-color:rgba(91,61,245,.25);color:var(--primary-700)}
.tag-accent{background:rgba(255,107,44,.12);border-color:rgba(255,107,44,.3);color:#C2480F}
.badge-fold{
  display:inline-block;font-size:12px;letter-spacing:.02em;padding:5px 12px;
  color:#fff;background:var(--accent-500);
  clip-path:polygon(8px 0,100% 0,100% 100%,8px 100%,0 50%);
}

/* ---------- 要点清单 ---------- */
.check-wrap{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.check-card{background:var(--white);border:1px solid var(--line-200);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-1)}
.check-card h3{font-size:18px;font-weight:600;margin-bottom:6px}
.check-card .sub{font-size:14px;color:var(--t-2);margin-bottom:14px}
.check-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line-200);font-size:15px}
.check-list li:last-child{border-bottom:0}
.check-list svg{width:24px;height:24px;flex:none;margin-top:3px;fill:none;stroke:var(--mint-400);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.check-list b{display:block;font-weight:600;margin-bottom:2px}
.check-list span{font-size:13.5px;color:var(--t-2)}

/* ---------- 错落卡片 ---------- */
.waterfall{display:grid;grid-template-columns:5fr 4fr 3fr;gap:24px;align-items:start}
.wf-card{
  background:var(--white);border:1px solid var(--line-200);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform var(--dur),box-shadow var(--dur),border-color var(--dur);
}
.wf-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.35)}
.wf-card:nth-child(2){margin-top:28px}
.wf-card:nth-child(3){margin-top:56px}
.wf-cover{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#1B1F35,#2A2050)}
.wf-cover img{width:100%;height:100%;object-fit:cover}
.wf-cover .badge-fold{position:absolute;top:12px;left:0}
.wf-body{padding:20px}
.wf-body h3{font-size:17px;font-weight:600;margin-bottom:8px}
.wf-body p{font-size:14px;color:var(--t-2)}
.wf-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:13px;color:var(--t-3);font-variant-numeric:tabular-nums}
.wf-foot .arrow{width:30px;height:30px;border-radius:8px;display:flex;align-items:center;justify-content:center;background:var(--bg-050);transition:transform var(--dur),background var(--dur)}
.wf-foot .arrow svg{width:16px;height:16px;fill:none;stroke:var(--primary-700);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.wf-card:hover .arrow{transform:translateX(4px);background:rgba(91,61,245,.12)}

/* ---------- 表格 ---------- */
.table-wrap{background:var(--white);border:1px solid var(--line-200);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
table{width:100%;border-collapse:collapse;font-size:14.5px}
thead th{background:var(--bg-050);text-align:left;font-weight:600;font-size:13.5px;color:var(--t-2);padding:14px 20px;border-bottom:1px solid var(--line-200)}
tbody td{padding:16px 20px;border-bottom:1px solid var(--line-200);color:var(--t-2)}
tbody tr:nth-child(even){background:rgba(20,22,31,.02)}
tbody tr:last-child td{border-bottom:0}
tbody td:first-child{color:var(--t-1);font-weight:600}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-item{
  background:var(--white);border:1px solid var(--line-200);border-radius:12px;overflow:hidden;
  transition:background var(--dur),border-color var(--dur);
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:12px 20px;font-size:15.5px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-ico{position:relative;width:18px;height:18px;flex:none;transition:transform var(--dur)}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--primary-600);border-radius:2px;
}
.faq-ico::before{left:0;top:8px;width:18px;height:2px}
.faq-ico::after{left:8px;top:0;width:2px;height:18px;transition:opacity var(--dur)}
.faq-item[open]{background:rgba(91,61,245,.05);border-left:3px solid var(--primary-600)}
.faq-item[open] .faq-ico{transform:rotate(90deg)}
.faq-item[open] .faq-ico::after{opacity:0}
.faq-body{padding:0 20px 18px;font-size:14.5px;color:var(--t-2)}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;background:var(--ink-900);color:var(--d-1);
  border-radius:var(--r-lg);padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-card::after{
  content:"";position:absolute;top:-120px;right:-60px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(255,107,44,.28),transparent 70%);
}
.cta-card h3{font-size:22px;font-weight:700;position:relative;z-index:1}
.cta-card p{font-size:14.5px;color:var(--d-2);margin-top:8px;position:relative;z-index:1}
.cta-card .btn{position:relative;z-index:1}

/* ---------- 底部固定条 ---------- */
.sticky-cta{
  position:fixed;left:var(--side);right:0;bottom:0;z-index:55;height:64px;
  background:rgba(11,13,20,.94);border-top:1px solid var(--mint-400);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:0 28px;
}
.sticky-cta .txt{color:var(--d-1);font-size:14.5px}
.sticky-cta .txt b{color:var(--mint-400);font-weight:700}
.sticky-cta .btn{min-height:44px;font-size:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--d-2);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.f-brand .logo-text{font-size:16px}
.f-desc{font-size:14px;color:var(--d-2);max-width:320px}
.f-group{background:transparent;border:0}
.f-group summary{
  list-style:none;cursor:pointer;font-size:13px;letter-spacing:.08em;color:#fff;
  font-weight:600;margin-bottom:14px;
}
.f-group summary::-webkit-details-marker{display:none}
.f-links{display:flex;flex-direction:column;gap:10px}
.f-links a{font-size:14px;color:var(--d-2);transition:color var(--dur),transform var(--dur);width:fit-content}
.f-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--ink-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--t-3);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--d-2);font-size:13px;min-height:44px}
.to-top:hover{color:#fff}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 响应式 ---------- */
@media (max-width:1279px) and (min-width:1024px){
  :root{--side:88px}
  .side-brand{justify-content:center;padding:0}
  .side-brand .logo-text{display:none}
  .side-links{padding:14px 10px;overflow:visible}
  .nav-item{justify-content:center;padding:0}
  .nav-label{display:none}
  .nav-item:hover .side-tip{
    display:block;position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--ink-800);border:1px solid rgba(255,255,255,.16);color:#fff;
    font-size:13px;padding:6px 12px;border-radius:12px;white-space:nowrap;z-index:80;
  }
  .side-foot{padding:14px 10px 18px}
  .side-foot .btn{padding:0;width:44px;font-size:0}
  .side-foot .btn::after{content:"→";font-size:18px}
}
@media (max-width:1023px){
  :root{--side:0px}
  .side-nav{display:none}
  .topbar{display:flex}
  .layout{padding-top:56px}
  .sticky-cta{left:0;height:56px;padding:0 16px}
  .sticky-cta .txt b{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:8px 24px}
  .f-brand-wrap{grid-column:span 2;margin-bottom:20px}
  .f-group{border-bottom:1px solid var(--ink-line);padding:12px 0}
  .f-group summary{margin-bottom:0}
  .f-group .f-links{margin-top:12px}
  .waterfall{grid-template-columns:1fr 1fr}
  .wf-card:nth-child(3){grid-column:span 2;margin-top:0}
  .check-wrap{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .head-grid{grid-template-columns:1fr;gap:28px}
  .head-visual{max-width:520px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .page-head{padding:32px 0 40px}
  .page-head h1{font-size:30px}
  .section{padding:48px 0}
  .step-list{padding:8px 20px}
  .step-row{grid-template-columns:1fr;gap:10px;padding:24px 0}
  .step-num{font-size:40px}
  .cta-card{padding:28px 24px}
  .head-stat .st{padding-right:18px}
}
@media (max-width:639px){
  .waterfall{grid-template-columns:1fr}
  .wf-card:nth-child(3){grid-column:span 1}
  .wf-card:nth-child(2),.wf-card:nth-child(3){margin-top:0}
  .sec-head h2{font-size:21px}
  .head-stat{gap:18px}
  .head-stat .st{padding-right:18px}
  .sticky-cta .txt{font-size:13px}
  .sticky-cta{padding:0 12px;gap:10px}
  .sticky-cta .btn{padding:0 16px;font-size:13px}
  .footer-grid{grid-template-columns:1fr}
  .f-brand-wrap{grid-column:span 1}
  table{font-size:13.5px}
  thead th,tbody td{padding:12px 14px}
}