/* roulang page: index */
:root{
  --c-brand:#5B3FD6;
  --c-brand-strong:#7B4DFF;
  --c-brand-deep:#3A1F7A;
  --c-accent:#35E0D0;
  --c-spark:#FFC46B;
  --c-ink:#171232;
  --c-ink-2:#4A4568;
  --c-line:#E6E2F5;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F6F4FF;
  --c-deep:#0B0820;
  --c-deep-2:#1B1140;
  --grad:linear-gradient(135deg,#3A1F7A 0%,#5B3FD6 55%,#7B4DFF 100%);
  --r-xl:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,18,50,.06);
  --sh-2:0 18px 40px -18px rgba(59,42,107,.35);
  --pad-sec:96px;
  --wrap:1200px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-surface);
}
img{max-width:100%;display:block;background:var(--grad);color:#fff;font-size:13px}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{line-height:1.28;font-weight:700}
p{margin-bottom:1.1em}
p:last-child{margin-bottom:0}
::selection{background:rgba(123,77,255,.18)}
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){:root{--wrap:1240px}}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(11,8,32,.92);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .3s ease,box-shadow .3s ease,padding .3s ease;
}
.site-header.is-scrolled{
  background:rgba(11,8,32,.96);
  box-shadow:0 10px 30px -20px rgba(0,0,0,.9);
}
.head-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:72px;
  transition:height .3s ease;
}
.site-header.is-scrolled .head-inner{height:64px}
.nav{display:flex;align-items:center;gap:26px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
  position:relative;
  font-size:15px;
  color:rgba(255,255,255,.78);
  padding:6px 2px;
  transition:color .25s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--grad);
  transform:scaleX(0);
  transition:transform .28s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  color:#fff;
}
.logo-mark{
  width:30px;
  height:30px;
  display:grid;
  place-items:center;
  color:var(--c-accent);
  flex:0 0 auto;
}
.logo-mark svg{width:30px;height:30px;display:block}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:17px;font-weight:800;letter-spacing:.01em}
.logo-text em{font-style:normal;font-size:11.5px;letter-spacing:.22em;color:var(--c-accent)}
.head-right{display:flex;align-items:center;gap:18px;justify-self:end}
.menu-btn{
  display:none;
  width:44px;height:44px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);
  border-radius:var(--r-sm);
  cursor:pointer;
  padding:0;
  position:relative;
}
.menu-btn span{
  position:absolute;
  left:12px;right:12px;
  height:2px;
  border-radius:2px;
  background:#fff;
  transition:transform .3s ease,opacity .3s ease;
}
.menu-btn span:nth-child(1){top:15px}
.menu-btn span:nth-child(2){top:21px}
.menu-btn span:nth-child(3){top:27px}
body.menu-open .menu-btn span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.menu-open .menu-btn span:nth-child(2){opacity:0}
body.menu-open .menu-btn span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-menu{
  display:none;
  background:var(--c-deep);
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:120px 120px;
  border-bottom:1px solid rgba(255,255,255,.08);
  padding:8px 0 28px;
}
.mobile-menu nav{display:flex;flex-direction:column}
.mobile-menu nav a{
  height:48px;
  display:flex;
  align-items:center;
  color:rgba(255,255,255,.84);
  font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-menu nav a.is-active{color:var(--c-accent);font-weight:600}
.mobile-menu .btn{margin-top:20px;width:100%}
body.menu-open{overflow:hidden}
body.menu-open .mobile-menu{display:block}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:14px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  background:none;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease,background-position .4s ease;
}
.btn-primary{
  background-image:var(--grad);
  background-size:160% 160%;
  background-position:0 50%;
  color:#fff;
}
.btn-primary:hover{
  transform:translateY(-2px);
  background-position:60% 50%;
  box-shadow:0 14px 30px -14px rgba(91,63,214,.75);
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:#fff;
  border-color:var(--c-line);
  color:var(--c-brand);
}
.btn-ghost:hover{border-color:var(--c-brand);background:var(--c-surface-alt);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-on-dark{
  background:rgba(255,255,255,.1);
  border-color:rgba(255,255,255,.28);
  color:#fff;
}
.btn-on-dark:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(53,224,208,.45)}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}

/* 通用区块 */
.sec{padding:var(--pad-sec) 0}
.sec--alt{background:var(--c-surface-alt)}
.sec--line{border-top:1px solid var(--c-line)}
.sec-head{max-width:780px;margin-bottom:40px}
.sec-head--row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
}
.sec-title{font-size:clamp(24px,3vw,34px);letter-spacing:-.01em}
.sec-desc{margin-top:14px;color:var(--c-ink-2);font-size:15.5px;max-width:660px}
.sec-link{
  font-size:15px;
  font-weight:600;
  color:var(--c-brand);
  white-space:nowrap;
  border-bottom:2px solid rgba(91,63,214,.25);
  padding-bottom:2px;
  transition:border-color .25s ease,color .25s ease;
}
.sec-link:hover{color:var(--c-brand-strong);border-color:var(--c-brand-strong)}
.sec-link:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(53,224,208,.45);border-radius:4px}

/* 徽章与标签 */
.badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:32px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  background:#EDE9FF;
  color:#4B2EA8;
}
.badge::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--grad);
}
.badge--dark{
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  color:#fff;
}
.badge--dark::before{background:var(--c-accent)}
.badge--spark{
  background:rgba(255,196,107,.14);
  border:1px solid rgba(255,196,107,.5);
  color:#8A5A00;
}
.badge--spark::before{background:var(--c-spark)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chips li{
  font-size:12.5px;
  font-weight:600;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:var(--c-surface-alt);
  border:1px solid var(--c-line);
  color:var(--c-ink-2);
}

/* Hero */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--c-deep) url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  color:#fff;
  padding:88px 0 96px;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:120px 120px;
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(118deg,rgba(11,8,32,.95) 0%,rgba(58,31,122,.88) 48%,rgba(91,63,214,.6) 100%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:56px;
  align-items:center;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.hero h1{
  font-size:clamp(32px,4.6vw,52px);
  line-height:1.15;
  letter-spacing:-.02em;
  font-weight:800;
  margin:0 0 18px;
}
.hero-sub{
  font-size:17px;
  line-height:1.7;
  color:rgba(255,255,255,.8);
  max-width:560px;
  margin-bottom:30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-chip{display:flex;flex-wrap:wrap;gap:8px}
.hero-chip li{
  font-size:12.5px;
  padding:6px 13px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  color:rgba(255,255,255,.86);
}
.hero-panel{
  background:rgba(27,17,64,.55);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-xl);
  padding:28px;
  box-shadow:0 30px 60px -30px rgba(0,0,0,.8);
}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:32px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  color:#fff;
}
.pill::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-accent);
}
.hero-metric{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-md);
  padding:22px;
  position:relative;
  overflow:hidden;
}
.hero-metric::after{
  content:"";
  position:absolute;
  top:0;right:0;
  width:34px;height:34px;
  background:radial-gradient(circle at 100% 0,rgba(255,196,107,.55),transparent 70%);
}
.hm-badge{
  display:inline-block;
  font-size:12.5px;
  font-weight:600;
  color:var(--c-spark);
  letter-spacing:.08em;
  margin-bottom:10px;
}
.hm-num{
  font-size:clamp(30px,4vw,46px);
  font-weight:800;
  line-height:1;
  font-variant-numeric:tabular-nums;
}
.hm-num span{font-size:15px;font-weight:600;margin-left:6px;color:rgba(255,255,255,.7)}
.hm-desc{font-size:14px;line-height:1.7;color:rgba(255,255,255,.72);margin-bottom:0}

/* 指标看板 */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.stat-card{
  position:relative;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  padding:26px 24px 30px;
  box-shadow:var(--sh-1);
  transition:transform .3s ease,box-shadow .3s ease;
  overflow:hidden;
}
.stat-card::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--grad);
}
.stat-card::before{
  content:"";
  position:absolute;
  top:18px;right:18px;
  width:12px;height:12px;
  background:radial-gradient(circle,rgba(255,196,107,.9) 0 2px,transparent 2px),
             linear-gradient(var(--c-spark),var(--c-spark)) center/12px 1px no-repeat,
             linear-gradient(var(--c-spark),var(--c-spark)) center/1px 12px no-repeat;
  opacity:.9;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.stat-cat{
  display:inline-flex;
  height:26px;
  align-items:center;
  padding:0 11px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  background:#EDE9FF;
  color:#4B2EA8;
  margin-bottom:16px;
}
.stat-num{
  font-size:clamp(30px,4vw,46px);
  font-weight:800;
  line-height:1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--c-ink-2);margin-left:6px;letter-spacing:0}
.stat-text{font-size:13px;line-height:1.6;color:var(--c-ink-2);margin-top:10px}

/* 服务矩阵 */
.matrix-row{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:24px;
}
.matrix-row + .matrix-row{margin-top:24px}
.matrix-row--rev{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.m-card{
  position:relative;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-1);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .3s ease,box-shadow .3s ease;
}
.m-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:var(--grad);
  opacity:0;
  transition:opacity .3s ease;
  z-index:2;
}
.m-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.m-card:hover::before{opacity:1}
.m-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.m-media .m-no{
  position:absolute;
  top:16px;left:16px;
  background:rgba(11,8,32,.62);
  border:1px solid rgba(255,255,255,.24);
  color:#fff;
}
.m-body{padding:32px 30px 28px}
.m-no{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--c-brand);
  font-variant-numeric:tabular-nums;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--c-surface-alt);
  border:1px solid var(--c-line);
}
.m-body h3{font-size:20px;margin:16px 0 10px}
.m-body p{font-size:15px;color:var(--c-ink-2)}
.m-more{
  margin-top:auto;
  padding-top:22px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-brand);
  transition:gap .25s ease,color .25s ease;
}
.m-body .m-more{margin-top:20px}
.m-more:hover{gap:12px;color:var(--c-brand-strong)}
.m-more:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(53,224,208,.45);border-radius:6px}

/* 结果对比 */
.cmp-wrap{
  position:relative;
  margin-top:8px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-1);
  padding:34px 36px 28px;
}
.cmp-wrap::before{
  content:"";
  position:absolute;
  top:34px;bottom:28px;left:50%;
  width:1px;
  background:linear-gradient(180deg,transparent,var(--c-brand),var(--c-accent),transparent);
}
.cmp-head{
  display:grid;
  grid-template-columns:1fr minmax(90px,140px) 1fr;
  align-items:center;
  gap:18px;
  padding-bottom:18px;
  border-bottom:1px solid var(--c-line);
}
.cmp-head .badge:first-child{justify-self:start}
.cmp-head .badge:last-child{justify-self:end}
.cmp-head-mid{
  font-size:13px;
  color:var(--c-ink-2);
  text-align:center;
  letter-spacing:.08em;
}
.cmp-item{
  display:grid;
  grid-template-columns:1fr minmax(90px,140px) 1fr;
  align-items:center;
  gap:18px;
  padding:20px 0;
  border-bottom:1px solid var(--c-line);
}
.cmp-item:last-child{border-bottom:none;padding-bottom:6px}
.cmp-before{
  text-align:right;
  font-size:15px;
  color:var(--c-ink-2);
}
.cmp-after{
  font-size:15px;
  font-weight:600;
  color:var(--c-ink);
}
.cmp-bar{
  display:block;
  height:8px;
  border-radius:var(--r-pill);
  background:#EFECFB;
  overflow:hidden;
}
.cmp-bar i{
  display:block;
  height:100%;
  border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--c-brand),var(--c-accent));
}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  position:relative;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-1);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .3s ease,box-shadow .3s ease;
}
.news-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:var(--grad);
  opacity:0;
  transition:opacity .3s ease;
  z-index:2;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-card:hover::before{opacity:1}
.news-thumb{position:relative;display:block;overflow:hidden}
.news-thumb img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .4s ease;
}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-cat{
  position:absolute;
  top:14px;left:14px;
  height:28px;
  display:inline-flex;
  align-items:center;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  background:rgba(11,8,32,.66);
  border:1px solid rgba(255,255,255,.24);
  color:#fff;
}
.news-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1}
.news-title{
  font-size:17px;
  line-height:1.45;
  font-weight:600;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card:hover .news-title{color:var(--c-brand)}
.news-sum{
  margin-top:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--c-ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  margin-top:auto;
  padding-top:18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--c-ink-2);
  font-variant-numeric:tabular-nums;
}
.news-meta .read{color:var(--c-brand);font-weight:600}
.news-empty{
  grid-column:1 / -1;
  text-align:center;
  padding:56px 24px;
  border:1px dashed var(--c-line);
  border-radius:var(--r-xl);
  background:var(--c-surface-alt);
}
.news-empty svg{width:34px;height:34px;color:var(--c-brand);margin:0 auto 14px}
.news-empty p{color:var(--c-ink-2);font-size:15px;margin-bottom:18px}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside .sec-desc{margin-top:14px}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{
  position:relative;
  border-bottom:1px solid var(--c-line);
  padding-left:20px;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:3px;
  background:var(--grad);
  opacity:0;
  transition:opacity .25s ease;
}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 44px 20px 0;
  font-size:16.5px;
  font-weight:600;
  position:relative;
  transition:color .25s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-brand)}
.faq-item summary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(53,224,208,.45);border-radius:8px}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:8px;top:50%;
  width:14px;height:14px;
  margin-top:-7px;
  background:linear-gradient(var(--c-brand),var(--c-brand)) center/14px 2px no-repeat,
             linear-gradient(var(--c-brand),var(--c-brand)) center/2px 14px no-repeat;
  transition:transform .28s ease;
}
.faq-item[open] summary{color:var(--c-brand)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 40px 22px 0;font-size:15px;color:var(--c-ink-2);line-height:1.8}

/* 表单 */
.form-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start}
.form-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-1);
  padding:34px 32px 30px;
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.field label{font-size:13.5px;font-weight:600;color:var(--c-ink-2)}
.field input,.field select,.field textarea{
  height:48px;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:0 16px;
  background:#fff;
  font-size:15px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.field textarea{height:auto;min-height:130px;padding:14px 16px;line-height:1.7;resize:vertical}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#CFC7F2}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--c-brand);
  box-shadow:0 0 0 3px rgba(123,77,255,.14);
}
.form-card .btn{width:100%}
.form-note{margin-top:14px;font-size:13px;color:var(--c-ink-2);line-height:1.7}
.form-points{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.form-points li{
  display:flex;
  gap:12px;
  font-size:15px;
  color:var(--c-ink-2);
}
.form-points li::before{
  content:"";
  flex:0 0 auto;
  width:10px;height:10px;
  margin-top:9px;
  background:linear-gradient(var(--c-accent),var(--c-accent)) center/10px 1px no-repeat,
             linear-gradient(var(--c-accent),var(--c-accent)) center/1px 10px no-repeat;
}

/* 页脚 */
.site-footer{
  position:relative;
  background:var(--c-deep);
  color:rgba(255,255,255,.72);
  padding:72px 0 0;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:120px 120px;
  pointer-events:none;
}
.site-footer::after{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--c-brand),var(--c-accent),var(--c-brand),transparent);
}
.foot-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));
  gap:40px;
  padding-bottom:52px;
}
.foot-brand .logo{justify-self:start;margin-bottom:18px}
.foot-brand p{font-size:14px;line-height:1.8;max-width:340px}
.foot-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.foot-col ul{display:flex;flex-direction:column;gap:12px}
.foot-col a{
  font-size:14px;
  color:rgba(255,255,255,.7);
  transition:color .25s ease;
}
.foot-col a:hover{color:var(--c-accent)}
.foot-col a:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(53,224,208,.45);border-radius:5px}
.foot-bottom{
  position:relative;
  z-index:2;
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.56);
}

/* 响应式 */
@media (min-width:1280px){
  .wrap{padding:0 24px}
}
@media (max-width:1279px){
  :root{--pad-sec:80px}
  .hero{padding:72px 0 80px}
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  :root{--pad-sec:72px}
  .nav-left,.nav-right{display:none}
  .head-right .btn{display:none}
  .menu-btn{display:block}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero{padding:64px 0 72px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .matrix-row,.matrix-row--rev{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .form-grid{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cmp-wrap{padding:28px 24px 22px}
  .cmp-wrap::before{left:50%}
}
@media (max-width:767px){
  :root{--pad-sec:56px;--r-xl:18px}
  .wrap{padding:0 16px}
  .head-inner{height:64px}
  .logo-text strong{font-size:16px}
  .logo-text em{font-size:10.5px;letter-spacing:.16em}
  .hero{padding:52px 0 60px}
  .hero-panel{padding:20px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .stat-card{padding:20px 18px 24px}
  .matrix-row + .matrix-row{margin-top:16px}
  .matrix-row{gap:16px}
  .m-body{padding:24px 20px 22px}
  .cmp-wrap::before{display:none}
  .cmp-head,.cmp-item{grid-template-columns:1fr;gap:10px}
  .cmp-head .badge:first-child,.cmp-head .badge:last-child{justify-self:start}
  .cmp-head-mid{text-align:left}
  .cmp-before{text-align:left}
  .cmp-bar{width:100%}
  .news-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr;gap:0}
  .form-card{padding:24px 20px 22px}
  .foot-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px}
  .faq-item summary{font-size:15.5px;padding-right:38px}
}
@media (max-width:480px){
  .hero-badges .badge{height:28px;font-size:12px;padding:0 11px}
  .hero-cta .btn{width:100%}
  .stat-num{font-size:30px}
  .news-body{padding:18px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
  --c-brand:#5B3FD6;
  --c-brand-strong:#7B4DFF;
  --c-brand-deep:#3A1F7A;
  --c-brand-soft:#A992FF;
  --c-accent:#35E0D0;
  --c-spark:#FFC46B;
  --c-space:#0B0820;
  --c-space-2:#1B1140;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F6F4FF;
  --c-ink:#171232;
  --c-ink-2:#4A4568;
  --c-muted:#7A7496;
  --c-line:#E6E2F5;
  --r-xl:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,18,50,.06);
  --sh-2:0 18px 40px -18px rgba(59,42,107,.35);
  --grad:linear-gradient(135deg,#3A1F7A 0%,#5B3FD6 55%,#7B4DFF 100%);
  --grad-line:linear-gradient(90deg,#3A1F7A,#5B3FD6 55%,#7B4DFF);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-surface-alt);
  font-variant-numeric:tabular-nums;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
*:focus-visible{outline:2px solid transparent;box-shadow:0 0 0 3px rgba(53,224,208,.55);border-radius:10px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.wrap{max-width:1240px}}
@media (max-width:1023px){.wrap{padding:0 20px}}
@media (max-width:767px){.wrap{padding:0 16px}}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:14px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  background-size:180% 180%;background-position:0 50%;
  transition:transform .22s ease,box-shadow .22s ease,background-position .45s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{background-image:var(--grad);color:#fff;box-shadow:0 14px 28px -16px rgba(91,63,214,.85)}
.btn-primary:hover{transform:translateY(-2px);background-position:60% 50%;box-shadow:0 20px 34px -16px rgba(91,63,214,.9)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px -12px rgba(91,63,214,.8)}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-brand)}
.btn-ghost:hover{border-color:var(--c-brand);background:var(--c-surface-alt);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.28);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.55);transform:translateY(-2px)}
.btn-light:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;border-radius:12px;font-size:14px}
.btn-block{width:100%}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:#EDE9FF;color:#4B2EA8;white-space:nowrap;
}
.tag-spark{border:1px solid rgba(255,196,107,.75);background:rgba(255,196,107,.14);color:#B8731A}
.tag-dark{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#EDE9FF}
.dotgrid{background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);background-size:120px 120px}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(11,8,32,.92);
  border-bottom:1px solid rgba(255,255,255,.09);
  transition:background-color .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(11,8,32,.97);border-bottom-color:rgba(255,255,255,.14)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  min-height:72px;gap:16px;
}
.site-header.is-scrolled .header-inner{min-height:64px}
.nav{display:flex;align-items:center;gap:26px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end;gap:20px}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:rgba(255,255,255,.76);transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--grad-line);transform:scaleX(0);transform-origin:center;transition:transform .26s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-brand-soft);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.logo{display:inline-flex;align-items:center;gap:10px;justify-self:center}
.logo-mark{width:32px;height:32px;color:var(--c-brand-soft);flex:0 0 auto}
.logo-mark svg{width:100%;height:100%;display:block}
.logo-text{display:flex;flex-direction:column;line-height:1.12}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.06em;color:#fff}
.logo-text em{font-size:11.5px;font-style:normal;letter-spacing:.3em;color:var(--c-accent)}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.06);align-items:center;justify-content:center;justify-self:end;
  transition:background-color .2s ease,border-color .2s ease;
}
.menu-btn:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.45)}
.menu-btn span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;margin:4px 0}
.drawer{
  position:fixed;inset:0;z-index:90;display:flex;flex-direction:column;
  padding:96px 24px 32px;background:var(--c-space);color:#fff;
  transform:translateY(-102%);transition:transform .34s cubic-bezier(.22,.7,.3,1);
}
.drawer.is-open{transform:translateY(0)}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid rgba(255,255,255,.12)}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;height:52px;
  border-bottom:1px solid rgba(255,255,255,.12);font-size:16px;color:rgba(255,255,255,.88);
}
.drawer-nav a.is-active{color:var(--c-brand-soft);font-weight:600}
.drawer-nav a:hover{color:#fff}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px}
.drawer-foot p{font-size:13.5px;color:rgba(255,255,255,.6)}

/* ---------- 文章头图区 ---------- */
.article-hero{position:relative;overflow:hidden;background:var(--c-space);padding:44px 0 44px}
.article-hero .bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.4;
}
.article-hero .veil{
  position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(11,8,32,.95) 0%,rgba(58,31,122,.9) 58%,rgba(123,77,255,.72) 100%);
}
.article-hero .stars{position:absolute;inset:0;opacity:.85}
.article-hero .wrap{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.66)}
.crumbs a{color:rgba(255,255,255,.66)}
.crumbs a:hover{color:var(--c-accent)}
.crumbs .sep{color:rgba(255,255,255,.32)}
.crumbs .current{color:#fff;font-weight:600}
.hero-kicker{margin-top:22px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.hero-kicker .line{width:28px;height:2px;border-radius:2px;background:var(--grad-line)}
.hero-kicker span{font-size:13px;letter-spacing:.18em;color:rgba(255,255,255,.72)}
.article-hero h1{
  margin-top:14px;max-width:900px;
  font-size:clamp(26px,3.6vw,40px);line-height:1.22;font-weight:800;letter-spacing:-.01em;color:#fff;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:20px;font-size:14px;color:rgba(255,255,255,.72)}
.post-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.post-meta .meta-item::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);opacity:.9}
.post-meta .meta-item:first-of-type::before{display:none}
.post-meta .author{color:#fff;font-weight:600}

/* ---------- 正文主体 ---------- */
.article-main{padding:56px 0 80px}
.article-shell{
  max-width:900px;margin:0 auto;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-xl);box-shadow:var(--sh-1);
  padding:44px 48px 48px;
}
.summary{
  position:relative;background:var(--c-surface-alt);border-radius:var(--r-md);
  padding:22px 24px 22px 26px;margin-bottom:34px;
}
.summary::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:var(--grad)}
.summary h2{font-size:15px;font-weight:700;color:var(--c-brand);letter-spacing:.06em;margin-bottom:8px}
.summary p{font-size:15px;line-height:1.8;color:var(--c-ink-2)}

.article-body{max-width:800px;margin:0 auto;font-size:16.5px;line-height:1.9;color:var(--c-ink)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em}
.article-body strong{font-weight:700;color:var(--c-brand-deep)}
.article-body h2{
  position:relative;margin:2.1em 0 .85em;padding-left:18px;
  font-size:clamp(20px,2.4vw,26px);line-height:1.4;font-weight:700;color:var(--c-ink);
}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:4px;background:var(--grad)}
.article-body h3{position:relative;margin:1.7em 0 .6em;font-size:18px;line-height:1.5;font-weight:600;color:var(--c-ink)}
.article-body h3::before{
  content:"要点";display:inline-block;margin-right:9px;padding:2px 9px;
  font-size:12.5px;font-weight:600;color:var(--c-brand);background:#EDE9FF;
  border-radius:var(--r-pill);vertical-align:2px;letter-spacing:.04em;
}
.article-body h4{margin:1.4em 0 .5em;font-size:16.5px;font-weight:600;color:var(--c-brand-deep)}
.article-body a{color:var(--c-brand);border-bottom:1px solid rgba(91,63,214,.35);transition:color .2s ease,border-color .2s ease}
.article-body a:hover{color:var(--c-brand-strong);border-bottom-color:var(--c-brand-strong)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:2px}
.article-body li{position:relative;padding-left:24px;margin-bottom:.6em}
.article-body li::before{
  content:"✦";position:absolute;left:2px;top:0;font-size:13px;line-height:1.9;color:var(--c-accent);
}
.article-body ol{counter-reset:item}
.article-body ol li{padding-left:32px}
.article-body ol li::before{
  counter-increment:item;content:counter(item);top:2px;left:0;
  width:22px;height:22px;border-radius:50%;background:#EDE9FF;color:var(--c-brand);
  font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1;
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--c-surface-alt);
  border-left:3px solid;border-image:var(--grad) 1;border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--c-ink-2);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:1.4em 0;background:var(--grad);width:100%;height:auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:14px;color:var(--c-muted);margin-top:10px;text-align:center}
.article-body hr{border:0;height:1px;background:var(--c-line);margin:2.2em 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-body th{background:var(--c-surface-alt);font-weight:600;color:var(--c-ink)}
.article-body code{background:#F0EDFA;border-radius:6px;padding:2px 6px;font-size:14.5px}

.empty-state{
  text-align:center;padding:64px 24px;border:1px dashed var(--c-line);
  border-radius:var(--r-xl);background:var(--c-surface-alt);
}
.empty-state .star{width:42px;height:42px;margin:0 auto 16px;color:var(--c-brand-soft)}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-state p{color:var(--c-ink-2);font-size:15px;margin-bottom:22px}

/* ---------- 相关推荐 ---------- */
.section{padding:72px 0}
.section-alt{background:var(--c-surface)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700}
.section-head p{margin-top:8px;font-size:15px;color:var(--c-ink-2);max-width:640px}
.text-link{color:var(--c-brand);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid rgba(91,63,214,.3);padding-bottom:2px;transition:color .2s ease,border-color .2s ease}
.text-link:hover{color:var(--c-brand-strong);border-color:var(--c-brand-strong)}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  box-shadow:var(--sh-1);transition:transform .28s ease,box-shadow .28s ease;
}
.card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad);opacity:0;transition:opacity .28s ease;z-index:2}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card:hover::before{opacity:1}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--grad)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card-cover img{transform:scale(1.04)}
.card-cover .tag{position:absolute;left:14px;top:14px;z-index:2;background:rgba(255,255,255,.94);color:#4B2EA8}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14.5px;line-height:1.7;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--c-muted)}
.card-foot .read{color:var(--c-brand);font-weight:600}

/* ---------- 上下篇 + 返回 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:8px}
.post-nav a{
  display:block;padding:22px 24px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.post-nav a:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D8D0F7}
.post-nav span{display:block;font-size:13px;color:var(--c-muted);margin-bottom:6px;letter-spacing:.06em}
.post-nav strong{font-size:15.5px;font-weight:600;color:var(--c-ink);line-height:1.6}
.post-nav .next{text-align:right}
.back-row{margin-top:26px;text-align:center}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--c-space);border-radius:var(--r-xl);padding:48px 48px;color:#fff}
.cta-band .stars{position:absolute;inset:0;opacity:.7}
.cta-band .glow{position:absolute;right:-80px;top:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(123,77,255,.55),transparent 68%)}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700}
.cta-inner p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.78);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--c-space);color:rgba(255,255,255,.76);padding:72px 0 28px;overflow:hidden}
.site-footer .topline{position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-line)}
.site-footer .stars{position:absolute;inset:0;opacity:.6}
.site-footer .wrap{position:relative;z-index:2}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.foot-brand p{margin-top:18px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px}
.foot-col h4{font-size:14px;font-weight:600;letter-spacing:.12em;color:rgba(255,255,255,.52);margin-bottom:16px}
.foot-col li{margin-bottom:11px}
.foot-col a{font-size:14.5px;color:rgba(255,255,255,.78);transition:color .2s ease}
.foot-col a:hover{color:var(--c-accent)}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-shell{padding:38px 34px 40px}
  .rec-grid{gap:20px}
}
@media (max-width:1023px){
  .header-inner{min-height:68px}
  .nav{gap:20px}
  .nav-link{font-size:14.5px}
  .article-hero{padding:36px 0}
  .article-main{padding:44px 0 64px}
  .article-shell{padding:32px 26px 34px;border-radius:var(--r-md)}
  .section{padding:56px 0}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:40px 32px}
  .cta-inner{grid-template-columns:1fr;gap:24px}
  .cta-actions{justify-content:flex-start}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .nav-left,.nav-right{display:none}
  .header-inner{grid-template-columns:1fr auto 1fr;min-height:64px}
  .menu-btn{display:flex}
  .logo{grid-column:2}
  .article-hero{padding:28px 0 32px}
  .article-hero h1{font-size:24px}
  .post-meta{font-size:13.5px;gap:8px 12px}
  .article-main{padding:32px 0 48px}
  .article-shell{padding:24px 18px 28px;border-radius:14px}
  .summary{padding:18px 18px 18px 20px}
  .article-body{font-size:16px;line-height:1.85}
  .section{padding:48px 0}
  .rec-grid{grid-template-columns:1fr}
  .post-nav{grid-template-columns:1fr}
  .post-nav .next{text-align:left}
  .cta-band{padding:32px 20px;border-radius:var(--r-md)}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column}
}
@media (max-width:480px){
  .article-hero h1{font-size:21.5px;line-height:1.3}
  .article-shell{padding:20px 14px 24px}
  .logo-text strong{font-size:15px}
  .logo-text em{letter-spacing:.24em}
  .btn{height:46px;font-size:14.5px}
}

/* roulang page: category1 */
:root{
  --c-brand:#5B3FD6;
  --c-brand-strong:#7B4DFF;
  --c-brand-deep:#3A1F7A;
  --c-accent:#35E0D0;
  --c-spark:#FFC46B;
  --c-night:#0B0820;
  --c-night-2:#1B1140;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F6F4FF;
  --c-ink:#171232;
  --c-ink-2:#4A4568;
  --c-ink-3:#6E688C;
  --c-line:#E6E2F5;
  --r-xl:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,18,50,.06);
  --sh-2:0 18px 40px -18px rgba(59,42,107,.35);
  --grad-main:linear-gradient(135deg,#3A1F7A 0%,#5B3FD6 55%,#7B4DFF 100%);
  --pad-block:96px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
svg{display:block}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(53,224,208,.45);border-radius:8px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.wrap{max-width:1240px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(23,18,50,.55);background:rgba(255,255,255,.99)}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:72px;
  transition:min-height .25s ease;
}
.site-header.is-scrolled .header-inner{min-height:64px}
.nav{display:flex;align-items:center;gap:4px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end;gap:8px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--c-ink-2);
  border-radius:10px;
  transition:color .22s ease,background .22s ease;
}
.nav-link::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--grad-main);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .28s ease;
}
.nav-link:hover{color:var(--c-brand);background:#F6F4FF}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-brand);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}

.logo{display:inline-flex;align-items:center;gap:10px;padding:6px 4px;border-radius:12px}
.logo-mark{width:30px;height:30px;color:var(--c-brand);flex:none}
.logo-mark svg{width:100%;height:100%}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;letter-spacing:.02em}
.logo-text em{font-style:normal;font-size:12px;color:var(--c-brand);letter-spacing:.22em}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;
  border-radius:14px;
  font-size:15.5px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background-position .45s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  color:#fff;
  background-image:var(--grad-main);
  background-size:200% 100%;
  background-position:0 0;
  box-shadow:0 10px 24px -14px rgba(91,63,214,.8);
}
.btn-primary:hover{transform:translateY(-2px);background-position:60% 0;box-shadow:0 18px 34px -16px rgba(91,63,214,.85)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -10px rgba(91,63,214,.7)}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-brand-deep)}
.btn-ghost:hover{border-color:var(--c-brand);background:var(--c-surface-alt);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:42px;padding:0 18px;font-size:14.5px;border-radius:12px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  background:#fff;border:1px solid var(--c-line);border-radius:12px;
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-brand-deep);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-brand-deep);border-radius:2px;
  transition:transform .25s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:79;
  background:
    radial-gradient(circle at 18% 12%,rgba(53,224,208,.12),transparent 42%),
    linear-gradient(160deg,#1B1140 0%,#0B0820 100%);
  opacity:0;pointer-events:none;transform:translateY(-10px);
  transition:opacity .28s ease,transform .28s ease;
  overflow-y:auto;
}
.drawer.is-open{opacity:1;pointer-events:auto;transform:translateY(0)}
.drawer-inner{padding-top:22px;padding-bottom:40px;display:flex;flex-direction:column;gap:6px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 16px;color:#fff;font-size:16px;
  border-radius:12px;border:1px solid transparent;
}
.drawer-link::after{content:"›";color:rgba(255,255,255,.4)}
.drawer-link.is-active{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.22);color:#fff;font-weight:600}
.drawer-cta{margin-top:18px}
body.drawer-open{overflow:hidden}

/* ---------- hero ---------- */
.hero{
  position:relative;
  color:#fff;
  background-color:var(--c-night);
  background-image:
    linear-gradient(112deg,rgba(11,8,32,.94) 0%,rgba(58,31,122,.86) 52%,rgba(11,8,32,.9) 100%),
    url(/assets/images/backpic/back-1.webp);
  background-size:cover,cover;
  background-position:center,center 30%;
  padding:64px 0 84px;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:120px 120px;
  opacity:.08;
}
.hero .wrap{position:relative;z-index:2}
.crumb{margin-bottom:26px}
.crumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.66)}
.crumb-list li{display:inline-flex;align-items:center;gap:8px}
.crumb-list li+li::before{content:"/";color:rgba(255,255,255,.34)}
.crumb-list a{color:rgba(255,255,255,.78);border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.crumb-list a:hover{color:#fff;border-color:var(--c-accent)}
.crumb-list .is-current{color:#fff;font-weight:600}

.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:52px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;margin-bottom:20px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 10px var(--c-accent)}
.hero h1{
  font-size:clamp(32px,4.6vw,52px);
  line-height:1.15;font-weight:800;letter-spacing:-.02em;
  max-width:17em;
}
.hero-sub{
  margin-top:18px;
  font-size:18px;line-height:1.7;
  color:rgba(255,255,255,.78);
  max-width:36em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero .btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.26);color:#fff}
.hero .btn-ghost:hover{background:rgba(255,255,255,.16);border-color:var(--c-accent)}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.2);
  font-size:12.5px;font-weight:600;color:rgba(255,255,255,.9);
}

.hero-panel{
  background:#fff;color:var(--c-ink);
  border-radius:var(--r-xl);
  padding:26px;
  box-shadow:0 30px 70px -34px rgba(11,8,32,.95);
}
.panel-head{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.pill{
  display:inline-flex;align-items:center;height:32px;padding:0 13px;
  border-radius:var(--r-pill);
  background:#EDE9FF;color:#4B2EA8;
  font-size:12.5px;font-weight:600;
}
.stat{padding-bottom:18px;border-bottom:1px dashed var(--c-line);margin-bottom:18px}
.stat-num{font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat-unit{font-size:14px;font-weight:600;color:var(--c-ink-2);margin-left:6px}
.stat-label{display:block;margin-top:8px;font-size:13px;color:var(--c-ink-2)}
.panel-list{display:flex;flex-direction:column;gap:12px}
.panel-list li{display:flex;gap:10px;font-size:14.5px;color:var(--c-ink-2);line-height:1.6}
.panel-list svg{width:14px;height:14px;flex:none;margin-top:6px;color:var(--c-brand)}

/* ---------- sections ---------- */
.section{padding:var(--pad-block) 0;border-top:1px solid var(--c-line)}
.section.alt{background:var(--c-surface-alt)}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--c-brand);
  text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-main)}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.25}
.section-desc{margin-top:14px;font-size:15.5px;color:var(--c-ink-2)}
.emoji-free{color:var(--c-brand)}

/* entry cards */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  position:relative;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
  display:flex;flex-direction:column;
}
.entry-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:var(--grad-main);opacity:0;transition:opacity .28s ease;z-index:3;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DAD3F4}
.entry-card:hover::before{opacity:1}
.entry-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--grad-main)}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.entry-card:hover .entry-media img{transform:scale(1.04)}
.entry-tag{
  position:absolute;left:14px;top:14px;z-index:2;
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);
  color:var(--c-brand-deep);font-size:12.5px;font-weight:700;
}
.entry-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
.entry-num{font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--c-brand);font-variant-numeric:tabular-nums}
.entry-body h3{font-size:20px;line-height:1.35}
.entry-body p{font-size:15px;color:var(--c-ink-2);margin:0}
.chip-list{display:flex;flex-wrap:wrap;gap:8px}
.chip-list span{
  display:inline-flex;align-items:center;height:28px;padding:0 11px;
  border-radius:var(--r-sm);
  background:var(--c-surface-alt);color:#4B2EA8;
  font-size:12.5px;font-weight:600;
}
.card-arrow{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--c-brand);
}
.card-arrow svg{width:16px;height:16px;transition:transform .25s ease}
.entry-card:hover .card-arrow svg{transform:translateX(4px)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{
  position:relative;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:26px 22px 22px;
  box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background-image:var(--grad-main);color:#fff;
  font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--c-ink-2);margin:0}
.step::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--grad-main);opacity:.85;
}

/* checklist */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 28px}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 18px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  font-size:15px;color:var(--c-ink-2);
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.check-item:hover{border-color:#CFC6F1;box-shadow:var(--sh-1);transform:translateY(-2px)}
.check-icon{
  flex:none;width:22px;height:22px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:#EDE9FF;color:var(--c-brand);margin-top:3px;
}
.check-icon svg{width:12px;height:12px}

/* compare */
.compare{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;
  position:relative;
}
.compare::before{
  content:"";position:absolute;left:50%;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(91,63,214,.05),#5B3FD6,#35E0D0,rgba(53,224,208,.05));
}
.compare-col{padding:0 4px}
.compare-head{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;margin-bottom:22px;
}
.compare-head.ok{background:#EDE9FF;color:#4B2EA8}
.compare-head.warn{background:#FFF3E2;color:#8A5A14}
.compare-row{margin-bottom:20px}
.row-label{font-size:14.5px;font-weight:600;margin-bottom:8px}
.row-bar{display:flex;align-items:center;gap:12px}
.bar{flex:1;height:8px;border-radius:var(--r-pill);background:#EFECFA;overflow:hidden}
.bar-fill{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,#5B3FD6,#35E0D0)}
.compare-col.warn .bar-fill{background:linear-gradient(90deg,#FFC46B,#FF9E4D)}
.row-value{font-size:13px;color:var(--c-ink-2);min-width:112px;text-align:right;font-variant-numeric:tabular-nums}
.compare-col.warn .row-value{text-align:right}

/* faq */
.faq-grid{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:56px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside .section-desc{margin-top:14px}
.faq-note{
  margin-top:24px;padding:18px 20px;border-radius:var(--r-md);
  background:#fff;border:1px dashed #CFC6F1;font-size:14.5px;color:var(--c-ink-2);
}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  position:relative;
  display:flex;align-items:center;gap:14px;
  min-height:70px;padding:16px 48px 16px 0;
  cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;line-height:1.5;
  transition:color .22s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:-14px;top:16px;bottom:16px;width:3px;
  border-radius:3px;background:var(--grad-main);
  transform:scaleY(0);transform-origin:top;transition:transform .28s ease;
}
.faq-item summary::after{
  content:"";position:absolute;right:8px;top:50%;
  width:14px;height:14px;margin-top:-7px;
  border-right:2px solid var(--c-ink-3);border-bottom:2px solid var(--c-ink-3);
  transform:rotate(45deg);transition:transform .28s ease,border-color .22s ease;
}
.faq-item[open] summary{color:var(--c-brand)}
.faq-item[open] summary::before{transform:scaleY(1)}
.faq-item[open] summary::after{transform:rotate(225deg);border-color:var(--c-brand)}
.faq-a{padding:0 48px 24px 0;font-size:15.5px;color:var(--c-ink-2)}

/* consult */
.consult-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:48px;align-items:start}
.consult-points{display:flex;flex-direction:column;gap:16px;margin-top:28px}
.consult-points li{display:flex;gap:12px;font-size:15px;color:var(--c-ink-2)}
.consult-points svg{width:16px;height:16px;flex:none;margin-top:5px;color:var(--c-brand)}
.form-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:30px;box-shadow:0 18px 44px -30px rgba(59,42,107,.5);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field input,.field textarea{
  width:100%;
  min-height:48px;padding:12px 14px;
  border:1px solid var(--c-line);border-radius:var(--r-md);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.7}
.field input:hover,.field textarea:hover{border-color:#CFC6F1}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(91,63,214,.14);
}
.field input::placeholder,.field textarea::placeholder{color:#A29CC0}
.privacy{margin-top:14px;font-size:13px;color:var(--c-ink-3);display:flex;gap:8px;align-items:flex-start}
.privacy svg{width:14px;height:14px;flex:none;margin-top:5px;color:var(--c-accent)}

/* image fallback */
img.img-fallback{
  background-image:var(--grad-main);
  min-height:120px;
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  color:rgba(255,255,255,.78);
  background:
    radial-gradient(circle at 12% 0%,rgba(91,63,214,.36),transparent 46%),
    linear-gradient(180deg,#1B1140 0%,#0B0820 100%);
  padding:64px 0 24px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,#7B4DFF,#35E0D0,transparent);
}
.site-footer::after{
  content:"";position:absolute;inset:0 0 auto;height:180px;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:120px 120px;opacity:.07;
}
.site-footer .wrap{position:relative;z-index:2}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px}
.foot-brand .logo{color:#fff;margin-bottom:16px}
.foot-brand .logo-mark{color:var(--c-accent)}
.foot-brand .logo-text em{color:var(--c-accent)}
.foot-brand p{font-size:14.5px;line-height:1.75;color:rgba(255,255,255,.66);max-width:34em}
.foot-col h4{
  font-size:14px;font-weight:700;letter-spacing:.1em;
  color:rgba(255,255,255,.9);
  padding-bottom:10px;margin-bottom:16px;
  border-bottom:1px solid rgba(255,255,255,.18);
}
.foot-col li{margin-bottom:12px}
.foot-col a{font-size:14.5px;color:rgba(255,255,255,.66);transition:color .22s ease,transform .22s ease;display:inline-block}
.foot-col a:hover{color:var(--c-accent);transform:translateX(3px)}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--pad-block:84px}
  .hero-grid{gap:40px}
  .compare{gap:32px}
  .faq-grid{gap:40px}
}
@media (max-width:1023px){
  :root{--pad-block:72px}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-panel{max-width:560px}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .entry-grid .entry-card:last-child{grid-column:span 2}
  .steps{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .consult-grid{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{grid-template-columns:44px auto 44px}
  .logo{justify-self:center}
  .nav-toggle{justify-self:end;grid-column:3}
}
@media (max-width:767px){
  :root{--pad-block:56px}
  .wrap{padding:0 16px}
  .hero{padding:44px 0 60px}
  .hero-panel{padding:22px;max-width:none}
  .entry-grid{grid-template-columns:1fr}
  .entry-grid .entry-card:last-child{grid-column:auto}
  .steps{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr;gap:26px}
  .compare::before{display:none}
  .compare-col.warn{border-top:1px dashed #DAD3F4;padding-top:24px}
  .row-value{min-width:0}
  .faq-item summary{font-size:16px;padding-right:36px}
  .faq-a{padding-right:0}
  .form-card{padding:22px}
  .field-row{grid-template-columns:1fr;gap:0}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column}
  .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .nav-toggle .btn-sm{width:auto}
}
@media (max-width:480px){
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .section-title{font-size:22px}
  .entry-body{padding:20px}
  .crumb-list{font-size:13px}
  .chip{height:30px;font-size:12px}
}

/* roulang page: category2 */
:root{
  --c-brand:#5B3FD6;
  --c-brand-strong:#7B4DFF;
  --c-brand-deep:#3A1F7A;
  --c-accent:#35E0D0;
  --c-spark:#FFC46B;
  --c-deep:#0B0820;
  --c-deep-2:#1B1140;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F6F4FF;
  --c-ink:#171232;
  --c-ink-2:#4A4568;
  --c-line:#E6E2F5;
  --grad:linear-gradient(135deg,#3A1F7A 0%,#5B3FD6 55%,#7B4DFF 100%);
  --r-xl:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-1:0 2px 8px rgba(23,18,50,.06);
  --shadow-2:0 18px 40px -18px rgba(59,42,107,.35);
  --sec-pad:96px;
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:104px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-surface);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;background:linear-gradient(135deg,#3A1F7A,#7B4DFF);}
a{color:var(--c-brand);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--c-brand-strong)}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,textarea{font:inherit;color:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(53,224,208,.45);border-radius:var(--r-sm)}
::selection{background:rgba(123,77,255,.22)}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%}
@media (min-width:1440px){:root{--wrap:1240px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:14px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .22s ease,box-shadow .22s ease,background-position .5s ease,border-color .22s ease,background-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-primary{background-image:var(--grad);background-size:180% 100%;background-position:0 50%;color:#fff;box-shadow:0 10px 24px -14px rgba(91,63,214,.9)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);background-position:60% 50%;box-shadow:0 16px 30px -14px rgba(91,63,214,.95)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border:1px solid var(--c-line);color:var(--c-brand)}
.btn-ghost:hover{border-color:var(--c-brand);background:var(--c-surface-alt);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn[disabled],.btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:#EDE9FF;color:#4B2EA8;
}
.badge.on-dark{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.22)}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 auto}
.chip{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;color:var(--c-ink-2);background:var(--c-surface-alt);border:1px solid var(--c-line);
}
.chip.on-dark{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:rgba(255,255,255,.86)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,8,32,.86);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .25s ease,height .25s ease,box-shadow .25s ease;
  backdrop-filter:saturate(140%) blur(6px);
}
.site-header.is-scrolled{background:rgba(11,8,32,.98);box-shadow:0 10px 30px -22px rgba(0,0,0,.9)}
.head-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;
  height:72px;transition:height .25s ease;
}
.site-header.is-scrolled .head-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;justify-self:center}
.logo-mark{width:30px;height:30px;color:var(--c-accent);display:inline-flex;flex:0 0 auto}
.logo-mark svg{width:100%;height:100%}
.logo-text{display:flex;flex-direction:column;line-height:1.1;text-align:left}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.02em}
.logo-text em{font-style:normal;font-size:11.5px;color:rgba(255,255,255,.62);letter-spacing:.16em}
.nav{display:flex;align-items:center;gap:6px}
.nav-left{justify-self:start}
.nav-right{justify-self:end;gap:14px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  padding:0 12px;font-size:15px;color:rgba(255,255,255,.78);
}
.site-header.is-scrolled .nav-link{height:64px}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:20px;height:2px;
  background-image:var(--grad);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .25s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1);background-image:linear-gradient(135deg,#35E0D0,#7B4DFF)}
.nav-cta{height:42px;padding:0 20px;border-radius:12px;font-size:14.5px}
.nav-toggle{
  display:none;justify-self:end;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(255,255,255,.22);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
  transition:transform .25s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 抽屉菜单 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--c-deep);
  transform:translateY(-100%);transition:transform .32s ease;
  display:flex;flex-direction:column;padding:20px 20px 32px;
  overflow-y:auto;visibility:hidden;
}
.drawer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:120px 120px;opacity:.55;
}
.drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;position:relative;z-index:1;margin-bottom:22px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.22);color:#fff;font-size:20px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;position:relative;z-index:1}
.drawer-nav a{
  height:48px;display:flex;align-items:center;color:rgba(255,255,255,.82);
  font-size:16px;border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-nav a.is-active{color:#fff;font-weight:600}
.drawer-nav a:hover{color:var(--c-accent)}
.drawer-cta{margin-top:26px;position:relative;z-index:1;width:100%}
body.no-scroll{overflow:hidden}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(120deg,rgba(11,8,32,.94) 0%,rgba(58,31,122,.82) 58%,rgba(91,63,214,.72) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center 30%;
  padding:64px 0 68px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:120px 120px;opacity:.5;
}
.page-hero .wrap{position:relative;z-index:1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.66);margin-bottom:22px}
.crumb a{color:rgba(255,255,255,.66)}
.crumb a:hover{color:var(--c-accent)}
.crumb .sep{opacity:.5}
.crumb .current{color:#fff;font-weight:600}
.page-hero h1{
  color:#fff;font-size:clamp(30px,4.1vw,46px);line-height:1.16;font-weight:800;
  letter-spacing:-.02em;margin:18px 0 14px;max-width:19em;
}
.hero-sub{font-size:17px;line-height:1.7;color:rgba(255,255,255,.82);max-width:34em}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-pad) 0}
.section.alt{background:var(--c-surface-alt)}
.section.line{border-top:1px solid var(--c-line)}
.sec-head{max-width:720px;margin-bottom:38px}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-brand);letter-spacing:.08em;margin-bottom:12px;
}
.sec-tag::before{content:"";width:22px;height:2px;background-image:var(--grad);border-radius:2px}
.sec-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;margin-bottom:12px}
.sec-head p{color:var(--c-ink-2);font-size:15.5px;max-width:40em}

/* ---------- 侧栏目录 + 内容 ---------- */
.side-layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:56px;align-items:start}
.toc{position:sticky;top:104px}
.toc-title{font-size:13px;letter-spacing:.14em;color:var(--c-ink-2);margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;border-left:1px solid var(--c-line)}
.toc-link{
  display:block;padding:11px 14px;font-size:14.5px;color:var(--c-ink-2);
  border-left:3px solid transparent;margin-left:-1px;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.toc-link:hover{color:var(--c-brand);background:var(--c-surface-alt)}
.toc-link.is-active{color:var(--c-brand);font-weight:600;border-left-color:var(--c-accent);background:var(--c-surface-alt)}
.toc-cta{display:inline-flex;margin-top:22px;width:100%;justify-content:center;height:44px;font-size:14.5px}

/* ---------- 图文交替 ---------- */
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:40px 0}
.media-row + .media-row{border-top:1px solid var(--c-line)}
.media-row .media-text h2{font-size:clamp(21px,2.2vw,26px);line-height:1.32;margin-bottom:14px}
.media-row .media-text p{color:var(--c-ink-2);font-size:15.5px}
.media-row .media-fig{margin:0}
.media-row .media-fig img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);
  box-shadow:var(--shadow-1);transition:transform .35s ease,box-shadow .35s ease;
}
.media-row .media-fig img:hover{transform:scale(1.015);box-shadow:var(--shadow-2)}
.media-row .media-fig figcaption{font-size:14px;color:var(--c-ink-2);margin-top:12px}
.media-row.reverse .media-fig{order:-1}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.mini-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.mini-list li{position:relative;padding-left:20px;font-size:15px;color:var(--c-ink-2)}
.mini-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;
  background-image:var(--grad);border-radius:2px;
  clip-path:polygon(50% 0,62% 38%,100% 50%,62% 62%,50% 100%,38% 62%,0 50%,38% 38%);
}

/* ---------- 步骤清单 ---------- */
.steps{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--c-line)}
.steps li{
  display:grid;grid-template-columns:74px minmax(0,1fr);gap:22px;
  padding:26px 0;border-bottom:1px solid var(--c-line);
}
.steps .step-no{
  font-size:15px;font-weight:800;color:var(--c-brand);
  letter-spacing:.06em;
}
.steps h3{font-size:19px;margin-bottom:8px}
.steps p{color:var(--c-ink-2);font-size:15px;margin:0}
.steps li{position:relative;transition:padding-left .25s ease}
.steps li::before{
  content:"";position:absolute;left:-20px;top:28px;bottom:28px;width:3px;border-radius:3px;
  background-image:var(--grad);opacity:0;transition:opacity .25s ease;
}
.steps li:hover{padding-left:8px}
.steps li:hover::before{opacity:1}

/* ---------- 数据条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.metric{
  position:relative;background:#fff;border-radius:var(--r-xl);padding:26px 24px 30px;
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .28s ease,box-shadow .28s ease;
}
.metric::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background-image:var(--grad);
  transform:scaleX(.35);transform-origin:left;transition:transform .35s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.metric:hover::after{transform:scaleX(1)}
.metric .m-label{font-size:12.5px;color:var(--c-ink-2)}
.metric .m-num{
  display:flex;align-items:baseline;gap:6px;margin:12px 0 8px;
  font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1;color:var(--c-ink);
}
.metric .m-num em{font-style:normal;font-size:14px;font-weight:600;color:var(--c-brand)}
.metric .m-desc{font-size:13px;color:var(--c-ink-2)}
.metric .m-flag{
  position:absolute;top:16px;right:16px;width:10px;height:10px;color:var(--c-spark);
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:340px minmax(0,1fr);gap:56px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside h2{font-size:clamp(24px,3vw,32px);line-height:1.25;margin-bottom:14px}
.faq-aside p{color:var(--c-ink-2);font-size:15.5px}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line);position:relative}
.faq-item::before{
  content:"";position:absolute;left:-18px;top:14px;bottom:14px;width:3px;border-radius:3px;
  background-image:var(--grad);opacity:0;transition:opacity .25s ease;
}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;text-align:left;font-size:17px;font-weight:600;color:var(--c-ink);
  transition:color .22s ease;
}
.faq-q:hover{color:var(--c-brand)}
.faq-item.is-open .faq-q{color:var(--c-brand)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;position:relative;
  transition:transform .28s ease,border-color .28s ease,background-color .28s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-ink-2);border-radius:2px;transition:background-color .28s ease;
}
.faq-icon::before{width:11px;height:1.6px}
.faq-icon::after{width:1.6px;height:11px}
.faq-item.is-open .faq-icon{transform:rotate(90deg);border-color:var(--c-brand);background:var(--c-surface-alt)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 0 24px;color:var(--c-ink-2);font-size:15.5px;max-width:52em}

/* ---------- 转化表单 ---------- */
.cta-band{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(115deg,rgba(11,8,32,.95) 0%,rgba(58,31,122,.88) 62%,rgba(91,63,214,.8) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  padding:var(--sec-pad) 0;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:120px 120px;opacity:.45;
}
.cta-band .wrap{position:relative;z-index:1}
.form-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.form-intro h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.25;margin-bottom:16px}
.form-intro p{color:rgba(255,255,255,.8);font-size:15.5px}
.form-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.form-points li{display:flex;gap:10px;font-size:15px;color:rgba(255,255,255,.86)}
.form-points li::before{
  content:"";flex:0 0 auto;width:10px;height:10px;margin-top:7px;border-radius:2px;
  background-image:linear-gradient(135deg,#35E0D0,#7B4DFF);
  clip-path:polygon(50% 0,62% 38%,100% 50%,62% 62%,50% 100%,38% 62%,0 50%,38% 38%);
}
.form-card{background:#fff;border-radius:var(--r-xl);padding:32px;box-shadow:0 24px 60px -30px rgba(0,0,0,.7)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:600;color:var(--c-ink-2)}
.field input,.field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field textarea{height:auto;min-height:130px;padding:14px 16px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9C97B4}
.field input:focus,.field textarea:focus{
  border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(91,63,214,.14);outline:none;
}
.form-submit{margin-top:22px;width:100%}
.form-note{font-size:13px;color:var(--c-ink-2);margin-top:14px}
.form-msg{margin-top:14px;font-size:14px;color:var(--c-brand);min-height:20px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--c-deep);color:rgba(255,255,255,.72);
  padding:66px 0 26px;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background-image:var(--grad);
}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);
  background-size:120px 120px;opacity:.4;
}
.site-footer .wrap{position:relative;z-index:1}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand .logo{justify-self:start;margin-bottom:18px}
.foot-brand p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:30em}
.foot-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.06em}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14.5px;color:rgba(255,255,255,.66)}
.foot-col a:hover{color:var(--c-accent)}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sec-pad:80px}
  .side-layout{grid-template-columns:230px minmax(0,1fr);gap:40px}
  .faq-layout{grid-template-columns:300px minmax(0,1fr);gap:40px}
}
@media (max-width:1023px){
  :root{--sec-pad:72px}
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:inline-flex}
  .head-inner{height:64px}
  .side-layout{grid-template-columns:1fr;gap:0}
  .toc{
    position:static;margin-bottom:34px;padding-bottom:18px;border-bottom:1px solid var(--c-line);
  }
  .toc-list{
    flex-direction:row;overflow-x:auto;border-left:0;gap:8px;padding-bottom:6px;
    scrollbar-width:thin;
  }
  .toc-link{
    white-space:nowrap;border-left:0;border-bottom:2px solid transparent;background:var(--c-surface-alt);
    border-radius:var(--r-pill);padding:8px 16px;margin:0;
  }
  .toc-link.is-active{border-bottom-color:var(--c-accent)}
  .toc-cta{max-width:280px}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .form-layout{grid-template-columns:1fr;gap:34px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:767px){
  :root{--sec-pad:56px}
  .wrap{padding:0 16px}
  .page-hero{padding:44px 0 52px;min-height:auto}
  .page-hero h1{max-width:none}
  .hero-sub{font-size:15.5px}
  .media-row{grid-template-columns:1fr;gap:22px;padding:30px 0}
  .media-row.reverse .media-fig{order:0}
  .steps li{grid-template-columns:1fr;gap:8px}
  .steps li::before{left:-12px}
  .metrics{gap:16px}
  .metric{padding:20px 18px 24px;border-radius:var(--r-md)}
  .form-card{padding:22px}
  .form-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;gap:8px}
  .faq-q{font-size:16px;padding:20px 0}
}
@media (max-width:480px){
  .logo-text strong{font-size:15px}
  .logo-text em{font-size:11px;letter-spacing:.12em}
  .metrics{grid-template-columns:1fr}
  .btn{width:100%}
  .nav-cta{width:auto}
  .toc-cta{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --c-brand:#5B3FD6;
  --c-brand-strong:#7B4DFF;
  --c-brand-deep:#3A1F7A;
  --c-accent:#35E0D0;
  --c-spark:#FFC46B;
  --c-deep:#0B0820;
  --c-deep-2:#1B1140;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F6F4FF;
  --c-ink:#171232;
  --c-ink-2:#4A4568;
  --c-line:#E6E2F5;
  --r-xl:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-1:0 2px 8px rgba(23,18,50,.06);
  --shadow-2:0 18px 40px -18px rgba(59,42,107,.35);
  --grad:linear-gradient(135deg,#3A1F7A 0%,#5B3FD6 55%,#7B4DFF 100%);
  --grad-soft:linear-gradient(135deg,rgba(58,31,122,.10) 0%,rgba(123,77,255,.10) 100%);
  --wrap:1200px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-surface);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(53,224,208,.45);border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
@media (min-width:1440px){.wrap{max-width:1240px}}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:14px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background-position .5s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{background-image:var(--grad);background-size:160% 100%;background-position:0 0;color:#fff;box-shadow:0 10px 24px -14px rgba(91,63,214,.9)}
.btn-primary:hover{transform:translateY(-2px);background-position:60% 0;box-shadow:0 16px 30px -14px rgba(91,63,214,.85)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-brand)}
.btn-ghost:hover{border-color:var(--c-brand);background:var(--c-surface-alt);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn[disabled],.btn.is-disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:#EDE9FF;color:#4B2EA8;border:1px solid rgba(91,63,214,.14);
}
.badge-light{background:rgba(255,255,255,.12);color:#EDE9FF;border-color:rgba(255,255,255,.22)}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-brand-strong)}
.badge-spark{border-color:rgba(255,196,107,.6);background:rgba(255,196,107,.12);color:#8A5A10}
.chip-list{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 0}
.chip-list li{
  padding:6px 14px;border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:var(--c-surface-alt);color:#4B2EA8;border:1px solid rgba(91,63,214,.16);
}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--c-brand);margin-bottom:14px}
.section{padding:96px 0}
.section-alt{background:var(--c-surface-alt);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;margin-bottom:14px}
.section-head p{color:var(--c-ink-2);font-size:16px;margin:0}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,8,32,.88);
  border-bottom:1px solid rgba(230,226,245,.14);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(11,8,32,.97);box-shadow:0 10px 30px -22px rgba(0,0,0,.9)}
.nav-wrap{
  position:relative;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;
  height:72px;transition:height .25s ease;
}
.site-header.is-scrolled .nav-wrap{height:64px}
.nav{display:flex;align-items:center;gap:26px}
.nav-left{justify-self:start}
.nav-right{justify-self:end;display:flex;align-items:center;gap:22px}
.nav-right-links{display:flex;align-items:center;gap:22px}
.nav-link{
  position:relative;padding:6px 2px;font-size:15px;font-weight:500;
  color:rgba(255,255,255,.76);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background-image:var(--grad);transform:scaleX(0);transform-origin:center;transition:transform .28s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.logo{display:inline-flex;align-items:center;gap:11px;color:#fff;justify-self:center}
.logo-mark{width:30px;height:30px;color:var(--c-accent);display:inline-flex;flex:0 0 auto}
.logo-mark svg{width:100%;height:100%}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.04em}
.logo-text em{font-size:11.5px;font-style:normal;letter-spacing:.28em;color:var(--c-accent);font-weight:600}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .25s ease,opacity .25s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{
  display:none;position:fixed;inset:0;z-index:55;flex-direction:column;gap:6px;
  padding:96px 24px 40px;background:var(--c-deep);
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:120px 120px;
}
.drawer.is-open{display:flex}
.drawer a.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 6px;font-size:17px;font-weight:600;
  color:rgba(255,255,255,.86);border-bottom:1px solid rgba(230,226,245,.12);
}
.drawer a.drawer-link:hover{color:var(--c-accent)}
.drawer a.drawer-link.is-active{color:#fff}
.drawer .drawer-cta{margin-top:26px}
body.no-scroll{overflow:hidden}

/* ============ 页面横幅 ============ */
.page-hero{position:relative;overflow:hidden;background:var(--c-deep);color:#fff;padding:88px 0 76px}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:120px 120px;opacity:.9;
}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.42}
.hero-mask{position:absolute;inset:0;background:linear-gradient(115deg,rgba(11,8,32,.95) 0%,rgba(58,31,122,.84) 52%,rgba(91,63,214,.6) 100%)}
.page-hero .wrap{position:relative;z-index:3}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.7);margin-bottom:22px}
.crumbs a:hover{color:var(--c-accent)}
.crumbs .sep{opacity:.55}
.crumbs .current{color:#fff;font-weight:700}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);line-height:1.15;font-weight:800;letter-spacing:-.02em;
  max-width:900px;margin:16px 0 18px;
}
.page-hero .lead{max-width:720px;font-size:17px;color:rgba(255,255,255,.82);margin:0 0 26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span{
  padding:6px 14px;border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#EDE9FF;
}

/* ============ 速览指标条 ============ */
.metrics{padding:74px 0 82px;background:#fff}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:26px 24px 30px;box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .26s ease,box-shadow .26s ease;
}
.metric-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background-image:var(--grad);
  opacity:.85;transform:scaleX(.35);transform-origin:left;transition:transform .35s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.metric-card:hover::after{transform:scaleX(1)}
.metric-card .metric-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;color:#4B2EA8;background:#EDE9FF;margin-bottom:16px;
}
.metric-num{display:flex;align-items:baseline;gap:6px;font-size:clamp(30px,4vw,44px);font-weight:800;line-height:1;letter-spacing:-.02em}
.metric-num small{font-size:14px;font-weight:600;color:var(--c-ink-2)}
.metric-card p{margin:14px 0 0;font-size:13.5px;line-height:1.7;color:var(--c-ink-2)}

/* ============ Z 字行式指南 ============ */
.guide-list{margin-top:8px}
.guide-row{
  display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;
  padding:56px 0;border-top:1px solid var(--c-line);
}
.guide-row:first-child{border-top:0;padding-top:12px}
.guide-row--rev{grid-template-columns:7fr 5fr}
.guide-row--rev .guide-media{order:2}
.guide-media{
  position:relative;border-radius:var(--r-xl);overflow:hidden;background-image:var(--grad);
  box-shadow:var(--shadow-1);
}
.guide-media::after{
  content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(58,31,122,.18),rgba(53,224,208,.08));
  pointer-events:none;
}
.guide-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;background-image:var(--grad);
  transition:transform .5s ease;
}
.guide-row:hover .guide-media img{transform:scale(1.04)}
.guide-body .guide-num{
  display:block;font-size:34px;font-weight:800;line-height:1;letter-spacing:-.02em;
  background-image:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:14px;
}
.guide-body h3{font-size:21px;line-height:1.35;font-weight:600;margin-bottom:12px}
.guide-body p{color:var(--c-ink-2);font-size:15.5px}
.guide-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;font-size:14.5px;font-weight:700;color:var(--c-brand);
}
.guide-link::after{content:"→";transition:transform .25s ease}
.guide-link:hover{color:var(--c-brand-strong)}
.guide-link:hover::after{transform:translateX(4px)}
.guide-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  margin-top:26px;padding-top:34px;border-top:1px solid var(--c-line);
}
.guide-foot p{margin:0;color:var(--c-ink-2);font-size:15px;max-width:620px}

/* ============ 步骤流程 ============ */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;padding:24px 20px;border-radius:var(--r-md);background:#fff;
  border:1px solid var(--c-line);box-shadow:var(--shadow-1);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(91,63,214,.35)}
.step .step-index{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;
  background-image:var(--grad);color:#fff;font-size:14px;font-weight:700;margin-bottom:14px;
}
.step h3{font-size:16px;font-weight:600;margin-bottom:8px;line-height:1.4}
.step p{font-size:14px;color:var(--c-ink-2);margin:0}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:110px}
.faq-aside h2{font-size:clamp(24px,3vw,34px);line-height:1.25;margin-bottom:14px}
.faq-aside p{color:var(--c-ink-2);font-size:15.5px}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  position:relative;display:flex;align-items:center;gap:14px;min-height:68px;padding:16px 34px 16px 18px;
  cursor:pointer;list-style:none;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{font-size:16.5px;font-weight:600;line-height:1.5;margin:0}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background-image:var(--grad);opacity:0;transition:opacity .25s ease;
}
.faq-item summary::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:600;color:var(--c-ink-2);transition:transform .25s ease,color .25s ease;
}
.faq-item summary:hover h3{color:var(--c-brand)}
.faq-item[open] summary::before{opacity:1}
.faq-item[open] summary h3{color:var(--c-brand)}
.faq-item[open] summary::after{content:"–";color:var(--c-brand)}
.faq-body{padding:0 34px 22px 18px;color:var(--c-ink-2);font-size:15px}

/* ============ 转化表单条 ============ */
.cta-strip{
  position:relative;overflow:hidden;background:var(--c-deep-2);color:#fff;
  border-radius:var(--r-xl);padding:46px 44px;
}
.cta-strip::before{
  content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:120px 120px;opacity:.85;pointer-events:none;
}
.cta-strip::after{
  content:"";position:absolute;left:0;top:0;right:0;height:1px;background-image:var(--grad);
}
.cta-inner{position:relative;z-index:2}
.cta-strip h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin-bottom:12px}
.cta-strip .cta-desc{color:rgba(255,255,255,.78);font-size:15.5px;max-width:640px;margin-bottom:26px}
.cta-form{display:flex;gap:14px;flex-wrap:wrap}
.cta-field{flex:1 1 240px;min-width:0}
.cta-field input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-md);
  border:1px solid rgba(230,226,245,.28);background:rgba(255,255,255,.08);color:#fff;
  transition:border-color .22s ease,box-shadow .22s ease,background-color .22s ease;
}
.cta-field input::placeholder{color:rgba(255,255,255,.5)}
.cta-field input:hover{border-color:rgba(53,224,208,.5)}
.cta-field input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(53,224,208,.28);background:rgba(255,255,255,.12)}
.cta-form .btn{flex:0 0 auto}
.cta-note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.62)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--c-deep);color:rgba(255,255,255,.72);
  padding:72px 0 0;margin-top:8px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background-image:var(--grad);
}
.site-footer::after{
  content:"";position:absolute;inset:0 0 auto 0;height:220px;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:120px 120px;
}
.site-footer .wrap{position:relative;z-index:2}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.foot-brand .logo{margin-bottom:18px}
.foot-brand p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:340px}
.foot-col h4{
  font-size:14px;font-weight:700;letter-spacing:.08em;color:#BFB2F2;margin-bottom:18px;
}
.foot-col ul li{margin-bottom:12px}
.foot-col a{font-size:14.5px;color:rgba(255,255,255,.72)}
.foot-col a:hover{color:var(--c-accent)}
.foot-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(230,226,245,.14);padding:22px 0 30px;font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .guide-row{gap:40px}
  .faq-layout{gap:40px}
  .foot-grid{gap:30px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .guide-row,.guide-row--rev{grid-template-columns:1fr;gap:26px;padding:44px 0}
  .guide-row--rev .guide-media{order:0}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .steps{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:36px}
  .nav{gap:18px}
  .nav-right{gap:16px}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .section{padding:56px 0}
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
  .nav-left,.nav-right-links,.nav-cta{display:none}
  .nav-wrap .logo{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}
  .menu-toggle{display:flex}
  .page-hero{padding:56px 0 52px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .page-hero .lead{font-size:15.5px}
  .metrics{padding:52px 0 58px}
  .metric-grid{grid-template-columns:1fr;gap:16px}
  .steps{grid-template-columns:1fr}
  .cta-strip{padding:32px 22px;border-radius:var(--r-md)}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .guide-foot{flex-direction:column;align-items:flex-start}
  .guide-foot .btn{width:100%}
}
@media (max-width:480px){
  .page-hero h1{font-size:25px}
  .badge{height:28px;padding:0 11px;font-size:12px}
  .metric-num{font-size:30px}
  .faq-item summary{padding-right:28px}
  .faq-item summary h3{font-size:15.5px}
}

/* roulang page: category4 */
:root{
  --c-brand:#5B3FD6;
  --c-brand-strong:#7B4DFF;
  --c-brand-deep:#3A1F7A;
  --c-accent:#35E0D0;
  --c-spark:#FFC46B;
  --c-bg:#0B0820;
  --c-bg-2:#1B1140;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F6F4FF;
  --c-ink:#171232;
  --c-ink-2:#4A4568;
  --c-line:#E6E2F5;
  --grad-brand:linear-gradient(135deg,#3A1F7A 0%,#5B3FD6 55%,#7B4DFF 100%);
  --r-xl:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,18,50,.06);
  --sh-2:0 18px 40px -18px rgba(59,42,107,.35);
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-surface);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(53,224,208,.45);border-radius:8px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-pad) 0}
.section-alt{background:var(--c-surface-alt)}
.section-line{border-top:1px solid var(--c-line)}
.sec-head{max-width:740px;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.sec-head p{margin-top:14px;font-size:15.5px;color:var(--c-ink-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-brand);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-brand)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:14px;border:1px solid transparent;
  font-size:15.5px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background-position .5s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{background-image:var(--grad-brand);background-size:180% 180%;background-position:0% 50%;color:#fff;box-shadow:0 14px 28px -16px rgba(91,63,214,.85)}
.btn-primary:hover{transform:translateY(-2px);background-position:60% 50%}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.36);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px)}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-brand)}
.btn-outline:hover{border-color:var(--c-brand);background:var(--c-surface-alt);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;border-radius:12px}
.btn-block{width:100%}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  --nav-ink:#ffffff;
  --nav-muted:rgba(255,255,255,.74);
  --nav-active:#ffffff;
  background:rgba(11,8,32,.72);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  --nav-ink:#171232;
  --nav-muted:#4A4568;
  --nav-active:#5B3FD6;
  background:rgba(255,255,255,.97);
  box-shadow:0 1px 0 var(--c-line),0 10px 30px -22px rgba(23,18,50,.5);
}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:20px;height:72px;transition:height .3s ease;
}
.site-header.is-scrolled .header-inner{height:64px}
.nav{display:flex;align-items:center;gap:26px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--nav-muted);
  padding:6px 2px;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:center;transition:transform .26s ease;
}
.nav-link:hover{color:var(--nav-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--nav-active);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.logo{display:inline-flex;align-items:center;gap:10px;justify-self:center;color:var(--nav-ink)}
.logo-mark{width:30px;height:30px;display:inline-flex;color:var(--c-accent);flex:none}
.logo-mark svg{width:100%;height:100%}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:17px;font-weight:800;letter-spacing:.02em}
.logo-text em{font-style:normal;font-size:11.5px;letter-spacing:.28em;color:var(--nav-muted)}
.site-header.is-scrolled .logo-mark{color:var(--c-brand)}
.menu-toggle{
  display:none;justify-self:end;width:42px;height:42px;border-radius:12px;
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.08);
  cursor:pointer;align-items:center;justify-content:center;
}
.site-header.is-scrolled .menu-toggle{border-color:var(--c-line);background:var(--c-surface-alt)}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--nav-ink);position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--nav-ink);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.drawer{
  position:fixed;inset:0;z-index:120;display:none;
  background:var(--c-bg);
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:120px 120px;
  padding:26px 20px 34px;
}
.drawer.is-open{display:block}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer .logo{color:#fff;justify-self:start}
.drawer .logo-text em{color:rgba(255,255,255,.6)}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.28);
  background:transparent;color:#fff;font-size:20px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:26px}
.drawer-nav a{
  height:48px;display:flex;align-items:center;color:#fff;font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.drawer-nav a.is-active{color:var(--c-accent);font-weight:600}
body.is-locked{overflow:hidden}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--c-bg) url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  padding:132px 0 96px;
  margin-top:-72px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(58,31,122,.94) 0%,rgba(91,63,214,.86) 52%,rgba(123,77,255,.78) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:120px 120px;opacity:.55;
}
.hero .wrap{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.7);margin-bottom:26px}
.crumbs a{color:rgba(255,255,255,.7);transition:color .2s ease}
.crumbs a:hover{color:var(--c-accent)}
.crumbs span.sep{opacity:.55}
.crumbs .current{color:#fff;font-weight:600}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.badge{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.9);
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.badge.gold::before{background:var(--c-spark)}
.hero h1{font-size:clamp(32px,4.6vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em}
.hero h1 .hl{background:linear-gradient(120deg,#FFD79A,#FFC46B);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.84);max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.chip{
  font-size:13px;padding:6px 13px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.82);
}
.hero-side{display:flex;flex-direction:column;gap:14px}
.side-pill{
  display:flex;align-items:center;gap:10px;height:52px;padding:0 18px;border-radius:var(--r-md);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  font-size:14.5px;color:rgba(255,255,255,.92);
}
.side-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:none}
.side-pill.gold .dot{background:var(--c-spark)}
.side-metric{
  margin-top:6px;padding:26px;border-radius:var(--r-xl);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
}
.side-metric .metric-label{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.72)}
.side-metric .metric-num{font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1.1;margin-top:8px}
.side-metric .metric-num small{font-size:15px;font-weight:600;margin-left:6px;color:rgba(255,255,255,.75)}
.side-metric .metric-desc{font-size:13px;color:rgba(255,255,255,.7);margin-top:10px}

/* ---------- 方向概览 ---------- */
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.fact-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:26px 24px 24px 28px;box-shadow:var(--sh-1);
  transition:transform .26s ease,box-shadow .26s ease;
}
.fact-card::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;border-radius:3px;
  background:var(--grad-brand);opacity:.85;
}
.fact-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.fact-index{font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--c-brand);margin-bottom:12px}
.fact-card h3{font-size:18px;font-weight:700;line-height:1.4}
.fact-card p{margin-top:10px;font-size:14.5px;line-height:1.7;color:var(--c-ink-2)}

/* ---------- 问答卡 ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.qa-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:28px;box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.qa-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:var(--grad-brand);opacity:0;transition:opacity .26s ease;
}
.qa-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,214,.35)}
.qa-card:hover::before{opacity:1}
.qa-tag{
  display:inline-block;font-size:12.5px;font-weight:600;color:#4B2EA8;
  background:#EDE9FF;border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;
}
.qa-card h3{font-size:18.5px;line-height:1.45;font-weight:700}
.qa-card p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--c-ink-2)}
.qa-note{
  display:flex;gap:8px;align-items:flex-start;margin-top:16px;padding-top:16px;
  border-top:1px dashed var(--c-line);font-size:13.5px;color:var(--c-ink-2);
}
.qa-note .star{color:var(--c-brand);flex:none;line-height:1.6}

/* ---------- 手风琴 ---------- */
.acc-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.acc-side{position:sticky;top:112px}
.acc-side h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.acc-side p{margin-top:16px;font-size:15.5px;color:var(--c-ink-2)}
.acc-side .btn{margin-top:26px}
.acc-list{border-top:1px solid var(--c-line)}
.acc-item{border-bottom:1px solid var(--c-line)}
.acc-btn{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0 22px 20px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-ink);transition:color .22s ease;min-height:64px;
}
.acc-btn::before{
  content:"";position:absolute;left:0;top:50%;width:3px;height:26px;border-radius:3px;
  background:var(--grad-brand);transform:translateY(-50%) scaleY(0);transition:transform .26s ease;
}
.acc-btn .icon{
  flex:none;width:22px;height:22px;border-radius:50%;border:1px solid var(--c-line);
  position:relative;transition:border-color .22s ease,background-color .22s ease;
}
.acc-btn .icon::before,.acc-btn .icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.acc-btn .icon::before{width:10px;height:2px}
.acc-btn .icon::after{width:2px;height:10px;transition:transform .26s ease}
.acc-item.is-open .acc-btn{color:var(--c-brand)}
.acc-item.is-open .acc-btn::before{transform:translateY(-50%) scaleY(1)}
.acc-item.is-open .acc-btn .icon{border-color:var(--c-brand);background:var(--c-surface-alt)}
.acc-item.is-open .acc-btn .icon::after{transform:translate(-50%,-50%) scaleY(0)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .3s ease}
.acc-panel p{padding:0 44px 24px 20px;font-size:15.5px;line-height:1.8;color:var(--c-ink-2)}

/* ---------- 自查步骤 ---------- */
.check-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center}
.media{
  border-radius:var(--r-xl);overflow:hidden;background-image:var(--grad-brand);
  background-size:cover;position:relative;
}
.media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease}
.media:hover img{transform:scale(1.04)}
.steps{display:flex;flex-direction:column;gap:26px;margin-top:30px}
.step{display:flex;gap:18px}
.step-num{
  flex:none;width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;color:#fff;background-image:var(--grad-brand);
  box-shadow:0 10px 22px -14px rgba(91,63,214,.9);
}
.step h3{font-size:17.5px;font-weight:700;line-height:1.5}
.step p{margin-top:6px;font-size:15px;color:var(--c-ink-2);line-height:1.75}
.step-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.step-chips span{
  font-size:12.5px;padding:4px 11px;border-radius:var(--r-pill);
  background:#EDE9FF;color:#4B2EA8;font-weight:600;
}

/* ---------- 表单条 ---------- */
.quick-form{
  display:grid;grid-template-columns:1fr 1.5fr auto;gap:16px;align-items:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:24px;box-shadow:var(--sh-1);
}
.quick-form input{
  height:48px;width:100%;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:#FBFAFF;padding:0 16px;font-size:15px;transition:border-color .22s ease,box-shadow .22s ease,background-color .22s ease;
}
.quick-form input::placeholder{color:#8E89A8}
.quick-form input:focus{
  outline:none;border-color:var(--c-brand);background:#fff;
  box-shadow:0 0 0 3px rgba(91,63,214,.14);
}
.form-note{margin-top:16px;font-size:13.5px;color:var(--c-ink-2)}
.form-msg{
  display:none;margin-top:14px;font-size:14.5px;color:var(--c-brand);
  background:var(--c-surface-alt);border:1px solid var(--c-line);
  border-radius:var(--r-sm);padding:12px 16px;
}
.form-msg.is-show{display:block}
.cta-panel{
  border-radius:var(--r-xl);padding:40px;color:#fff;position:relative;overflow:hidden;
  background-image:var(--grad-brand);
}
.cta-panel::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:120px 120px;pointer-events:none;
}
.cta-panel > *{position:relative;z-index:1}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3}
.cta-panel p{margin-top:14px;font-size:15.5px;color:rgba(255,255,255,.86);max-width:46em}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--c-bg);color:rgba(255,255,255,.78);padding:72px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-brand);
}
.site-footer::after{
  content:"";position:absolute;top:0;left:0;right:0;height:140px;pointer-events:none;opacity:.45;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:120px 120px;
}
.site-footer .wrap{position:relative;z-index:1}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{margin-top:18px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:34em}
.site-footer .logo{color:#fff;justify-self:start}
.site-footer .logo-text em{color:rgba(255,255,255,.6)}
.site-footer .logo-mark{color:var(--c-accent)}
.foot-col h4{font-size:14px;font-weight:600;color:var(--c-accent);letter-spacing:.06em;margin-bottom:18px}
.foot-col ul{display:flex;flex-direction:column;gap:12px}
.foot-col a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .2s ease,transform .2s ease;display:inline-block}
.foot-col a:hover{color:var(--c-accent);transform:translateX(2px)}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .wrap{max-width:1240px}
}
@media (max-width:1279px){
  :root{--sec-pad:80px}
  .hero-grid{gap:40px}
  .fact-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  :root{--sec-pad:72px}
  .nav{gap:18px}
  .nav-link{font-size:14.5px}
  .hero{padding:120px 0 76px;margin-top:-72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .qa-grid{grid-template-columns:1fr}
  .acc-layout,.check-grid{grid-template-columns:1fr;gap:36px}
  .acc-side{position:static}
  .quick-form{grid-template-columns:1fr 1fr;gap:14px}
  .quick-form .btn{grid-column:1 / -1}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  :root{--sec-pad:56px}
  .wrap{padding:0 16px}
  .nav-left,.nav-right{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{grid-template-columns:40px 1fr 40px;gap:10px}
  .logo{grid-column:2;justify-self:center}
  .menu-toggle{grid-column:3}
  .logo-text strong{font-size:15.5px}
  .logo-text em{font-size:10.5px;letter-spacing:.2em}
  .hero{padding:112px 0 60px;max-height:78vh}
  .hero-lead{font-size:15.5px}
  .hero-cta .btn{width:100%}
  .qa-card{padding:22px}
  .acc-btn{font-size:16px;padding-left:16px}
  .acc-panel p{padding:0 0 20px 16px}
  .cta-panel{padding:28px 22px}
  .quick-form{grid-template-columns:1fr}
  .quick-form .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .fact-grid{grid-template-columns:1fr}
  .badge{font-size:12px;height:30px;padding:0 12px}
  .side-metric{padding:20px}
  .step-num{width:36px;height:36px;border-radius:11px;font-size:14px}
}