/* roulang page: index */
:root{
  --brand:#5B2EFF;
  --brand-soft:rgba(91,46,255,.12);
  --mint:#2BE8C0;
  --pulse:#FF5B2E;
  --ink:#0D0B1F;
  --ink-2:#14122B;
  --mist:#F5F3FF;
  --line:#E4DFFF;
  --t-dark:#F2EEFF;
  --t-dark-2:#A79FD6;
  --t-light:#14122B;
  --t-light-2:#5C5878;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 8px 24px rgba(91,46,255,.10);
  --shadow-lg:0 18px 44px rgba(91,46,255,.20);
  --sidebar:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--mist);
  color:var(--t-light);
  line-height:1.8;
  font-size:16px;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:rgba(91,46,255,.22);}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (max-width:1023px){.wrap{padding:0 24px;}}
@media (max-width:639px){.wrap{padding:0 16px;}}

/* ---------- 左侧竖向导航 ---------- */
.side{
  position:fixed;top:0;left:0;height:100vh;width:var(--sidebar);
  background:var(--ink);
  border-right:1px solid rgba(255,255,255,.10);
  display:none;flex-direction:column;justify-content:space-between;
  padding:26px 18px 22px;z-index:60;
}
@media (min-width:1024px){.side{display:flex;}}
@media (min-width:1024px) and (max-width:1279px){.side{width:220px;} :root{--sidebar:220px;}}
.side-brand{display:flex;align-items:center;gap:12px;padding:0 6px 22px;border-bottom:1px solid rgba(255,255,255,.10);}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  background:linear-gradient(140deg,#5B2EFF,#2BE8C0);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;color:#fff;font-size:17px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
}
.side-brand b{display:block;color:var(--t-dark);font-size:15px;font-weight:700;line-height:1.3;}
.side-brand span{display:block;color:var(--t-dark-2);font-size:11px;letter-spacing:.06em;}
.side-nav{margin-top:22px;display:flex;flex-direction:column;gap:6px;}
.side-title{color:#6F67A0;font-size:11px;letter-spacing:.14em;padding:0 8px 8px;}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:10px;color:var(--t-dark-2);
  font-size:14px;font-weight:500;transition:background 180ms ease-out,color 180ms ease-out;
}
.side-link svg{width:17px;height:17px;flex:0 0 17px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.side-link:hover{background:rgba(255,255,255,.06);color:var(--t-dark);}
.side-link.active{background:rgba(91,46,255,.22);color:#fff;}
.side-link.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;background:var(--mint);}
.side-foot{border-top:1px solid rgba(255,255,255,.10);padding-top:18px;}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;padding:11px 14px;border-radius:10px;
  background:var(--pulse);color:#fff;font-weight:600;font-size:14px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:filter 180ms ease-out,box-shadow 180ms ease-out;
  box-shadow:0 8px 20px rgba(255,91,46,.26);
}
.side-cta:hover{filter:brightness(1.08);box-shadow:0 12px 26px rgba(255,91,46,.36);}
.side-cta:focus-visible{outline:2px solid var(--mint);outline-offset:3px;}
.side-note{margin-top:14px;color:#6F67A0;font-size:11.5px;line-height:1.7;}

/* ---------- 移动端顶部导航 ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:62px;z-index:70;
  background:rgba(13,11,31,.97);backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;padding:0 16px;
}
@media (min-width:1024px){.topbar{display:none;}}
.topbar .brand-mini{display:flex;align-items:center;gap:10px;}
.topbar .brand-mini b{color:var(--t-dark);font-size:14px;font-weight:700;}
.burger{
  width:42px;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;gap:4px;flex-direction:column;
}
.burger i{display:block;width:17px;height:2px;background:var(--t-dark);border-radius:2px;}
.burger:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.drawer{
  position:fixed;top:0;right:0;height:100vh;width:82%;max-width:330px;z-index:90;
  background:var(--ink);border-left:1px solid rgba(255,255,255,.10);
  transform:translateX(105%);transition:transform 260ms ease-out;
  padding:22px 18px;display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.10);}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid rgba(255,255,255,.18);color:var(--t-dark);font-size:18px;line-height:1;}
.drawer-link{display:flex;align-items:center;gap:10px;padding:13px 12px;border-radius:10px;color:var(--t-dark-2);font-size:15px;font-weight:500;}
.drawer-link.active{background:rgba(91,46,255,.22);color:#fff;}
.drawer-catch{position:fixed;inset:0;background:rgba(6,4,18,.62);z-index:80;opacity:0;pointer-events:none;transition:opacity 240ms ease-out;}
.drawer-catch.open{opacity:1;pointer-events:auto;}

/* ---------- 主体偏移 ---------- */
.page{margin-left:0;padding-top:62px;}
@media (min-width:1024px){.page{margin-left:var(--sidebar);padding-top:0;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:15px;
  transition:transform 180ms ease-out,box-shadow 180ms ease-out,filter 180ms ease-out,background 180ms ease-out;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn:focus-visible{outline:2px solid var(--mint);outline-offset:3px;}
.btn-primary{background:var(--pulse);color:#fff;box-shadow:0 8px 20px rgba(255,91,46,.28);}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 14px 30px rgba(255,91,46,.40);}
.btn-purple{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(91,46,255,.28);}
.btn-purple:hover{filter:brightness(1.08);box-shadow:0 14px 30px rgba(91,46,255,.42);}
.btn-outline{background:transparent;border:1px solid var(--brand);color:var(--brand);}
.btn-outline:hover{background:rgba(91,46,255,.08);}
.btn-outline-light{background:transparent;border:1px solid rgba(242,238,255,.34);color:var(--t-dark);}
.btn-outline-light:hover{background:rgba(255,255,255,.09);}
.btn-lg{padding:16px 30px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}

/* ---------- 通用 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6;
  background:var(--brand-soft);color:var(--brand);
}
.badge-mint{background:rgba(43,232,192,.14);color:#0F8F76;}
.badge-pulse{background:rgba(255,91,46,.13);color:#D03E14;}
.badge-mute{background:rgba(92,88,120,.12);color:#5C5878;}
.badge-dark{background:rgba(91,46,255,.22);color:#C9BBFF;}
.badge-mint-dark{background:rgba(43,232,192,.16);color:#5BF3D2;}

.section{padding:76px 0;}
@media (max-width:1023px){.section{padding:60px 0;}}
@media (max-width:639px){.section{padding:50px 0;}}
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-head h2{font-size:32px;font-weight:700;line-height:1.3;letter-spacing:.01em;}
.sec-head p{margin-top:14px;font-size:16px;color:var(--t-light-2);}
.on-dark .sec-head h2{color:var(--t-dark);}
.on-dark .sec-head p{color:var(--t-dark-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--brand);margin-bottom:14px;
}
.on-dark .eyebrow{color:var(--mint);}
.eyebrow::before{content:"";width:22px;height:2px;background:currentColor;border-radius:2px;}

.bg-ink{background:var(--ink);}
.bg-mist{background:var(--mist);}
.bg-deep{background:#100D26;}

img.ph{width:100%;height:100%;object-fit:cover;}
.shot-img{aspect-ratio:3/4;}
.cover-img{aspect-ratio:16/10;}
.hero-img{aspect-ratio:16/9;}
.ph-holder{
  background:linear-gradient(100deg,#EFEBFF 0%,#F8F6FF 42%,#EFEBFF 84%);
  background-size:220% 100%;animation:shimmer 2.4s ease-in-out infinite;
}
@keyframes shimmer{0%{background-position:120% 0;}100%{background-position:-40% 0;}}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:var(--t-dark);
  background:linear-gradient(120deg,#0D0B1F 0%,#150F3D 58%,#0D0B1F 100%);
  padding:70px 0 64px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.30;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(167,159,214,.26) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
}
.hero .scan{
  position:absolute;left:0;right:0;height:1px;top:28%;
  background:linear-gradient(90deg,transparent,rgba(43,232,192,.55),transparent);
  opacity:.55;
}
.hero-inner{position:relative;z-index:2;}
.hero-grid{display:grid;gap:44px;grid-template-columns:1fr;}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.08fr .92fr;align-items:center;}}
.hero h1{
  font-size:38px;font-weight:800;line-height:1.22;letter-spacing:.01em;color:#fff;
}
@media (min-width:1024px){.hero h1{font-size:48px;}}
.hero-sub{margin-top:20px;font-size:16.5px;color:var(--t-dark-2);max-width:600px;}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-trust{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--t-dark-2);}
.hero-trust span{display:inline-flex;align-items:center;gap:7px;}
.dot-mint{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;box-shadow:0 0 0 4px rgba(43,232,192,.16);}
.hero-visual{position:relative;}
.hero-frame{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 26px 60px rgba(0,0,0,.46);
}
.hero-chip{
  position:absolute;right:16px;bottom:16px;
  background:var(--pulse);color:#fff;padding:9px 16px;font-size:13px;font-weight:700;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  box-shadow:0 10px 24px rgba(255,91,46,.36);
}
.hero-stats{
  position:relative;z-index:2;margin-top:56px;
  display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr));
}
@media (min-width:900px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);padding:20px 20px 18px;
  transition:transform 180ms ease-out,background 180ms ease-out;
}
.stat:hover{transform:translateY(-2px);background:rgba(255,255,255,.09);}
.stat b{display:block;font-size:22px;font-weight:800;color:var(--mint);letter-spacing:.01em;line-height:1.35;}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--t-dark-2);}

/* ---------- 能力区 ---------- */
.split{display:grid;gap:34px;grid-template-columns:1fr;align-items:center;}
@media (min-width:1024px){.split{grid-template-columns:7fr 5fr;}}
@media (min-width:1024px){.split.rev{grid-template-columns:5fr 7fr;}}
@media (min-width:1024px){.split.rev .split-media{order:-1;}}
.cap-list{display:grid;gap:14px;}
.cap{
  display:flex;gap:16px;padding:20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
  transition:transform 180ms ease-out,box-shadow 180ms ease-out;
}
.cap:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.cap-ico{
  width:42px;height:42px;flex:0 0 42px;border-radius:11px;
  background:rgba(91,46,255,.10);display:flex;align-items:center;justify-content:center;
}
.cap-ico svg{width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.cap h3{font-size:16.5px;font-weight:600;color:var(--t-light);line-height:1.6;}
.cap p{margin-top:6px;font-size:14px;color:var(--t-light-2);line-height:1.75;}
.media-card{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow);
}
.media-card figcaption{padding:14px 18px;font-size:13px;color:var(--t-light-2);background:#fff;border-top:1px solid var(--line);}
.media-wrap{position:relative;}
.media-tag{
  position:absolute;left:14px;top:14px;z-index:2;
  background:rgba(13,11,31,.82);color:#fff;font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:999px;backdrop-filter:blur(6px);
}

/* ---------- 截图轮播 ---------- */
.shot-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 20px;scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot{
  flex:0 0 84%;scroll-snap-align:start;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);overflow:hidden;
  transition:transform 220ms ease-out,border-color 220ms ease-out,opacity 220ms ease-out;
  opacity:.62;
}
@media (min-width:640px){.shot{flex:0 0 46%;}}
@media (min-width:1024px){.shot{flex:0 0 31%;}}
.shot.is-active{opacity:1;transform:scale(1.04);border-color:rgba(43,232,192,.6);box-shadow:0 18px 40px rgba(0,0,0,.42);}
.shot-body{padding:16px 18px 18px;}
.shot-body h3{font-size:15.5px;font-weight:600;color:var(--t-dark);}
.shot-body p{margin-top:6px;font-size:13px;color:var(--t-dark-2);line-height:1.65;}
.carousel-bar{margin-top:4px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.carousel-btns{display:flex;gap:10px;}
.rnd{
  width:44px;height:44px;border-radius:50%;border:1px solid rgba(242,238,255,.3);
  color:var(--t-dark);display:flex;align-items:center;justify-content:center;
  transition:background 180ms ease-out,border-color 180ms ease-out;
}
.rnd:hover{background:rgba(255,255,255,.10);border-color:var(--mint);}
.rnd:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.thumbs{display:flex;gap:10px;overflow-x:auto;padding:2px;scrollbar-width:none;}
.thumbs::-webkit-scrollbar{display:none;}
.thumb{
  flex:0 0 74px;height:56px;border-radius:9px;overflow:hidden;
  border:1px solid rgba(255,255,255,.16);opacity:.6;transition:opacity 180ms ease-out,border-color 180ms ease-out;
}
.thumb.is-active{opacity:1;border-color:var(--mint);}
.dots{display:flex;gap:8px;}
.dot{width:9px;height:9px;border-radius:50%;background:rgba(242,238,255,.3);transition:background 180ms ease-out,width 180ms ease-out;}
.dot.is-active{background:var(--mint);width:24px;border-radius:5px;}

/* ---------- 系统要求表 ---------- */
.req-grid{display:grid;gap:24px;grid-template-columns:1fr;}
@media (min-width:900px){.req-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
.req-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.req-head{
  background:var(--brand);color:#fff;padding:16px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.req-head b{font-size:16px;font-weight:700;}
.req-head span{font-size:12px;opacity:.85;}
.req-row{display:flex;justify-content:space-between;gap:18px;padding:14px 22px;font-size:14.5px;border-top:1px solid var(--line);}
.req-row:nth-child(odd){background:#FBFAFF;}
.req-row dt{color:var(--t-light-2);}
.req-row dd{margin:0;color:var(--t-light);font-weight:600;text-align:right;}
@media (max-width:639px){
  .req-row{flex-direction:column;gap:4px;}
  .req-row dd{text-align:left;}
}

/* ---------- 评价墙 ---------- */
.wall{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:700px){.wall{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.wall{grid-template-columns:repeat(3,minmax(0,1fr));}}
.review{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
  transition:transform 180ms ease-out,box-shadow 180ms ease-out;
}
.review:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
@media (min-width:1024px){.review.offset{margin-top:26px;}}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{width:40px;height:40px;border-radius:50%;overflow:hidden;flex:0 0 40px;border:1px solid var(--line);}
.review-top b{display:block;font-size:14.5px;font-weight:600;color:var(--t-light);}
.review-top small{display:block;font-size:12px;color:var(--t-light-2);}
.stars{margin-left:auto;color:var(--mint);font-size:13px;letter-spacing:2px;line-height:1;}
.review p{margin-top:14px;font-size:14.5px;color:var(--t-light-2);line-height:1.8;}
.review-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- CMS 列表 ---------- */
.cms-grid{display:grid;gap:22px;grid-template-columns:1fr;}
@media (min-width:640px){.cms-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.cms-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.cms-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform 180ms ease-out,box-shadow 180ms ease-out;
}
.cms-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.cms-media{position:relative;aspect-ratio:16/10;background:#EFEBFF;overflow:hidden;}
.cms-media .badge{position:absolute;left:12px;top:12px;z-index:2;background:rgba(255,255,255,.94);color:var(--brand);}
.cms-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.cms-body h3{
  font-size:16.5px;font-weight:600;line-height:1.55;color:var(--t-light);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-body p{
  margin-top:10px;font-size:13.5px;color:var(--t-light-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;border-top:1px solid var(--line);font-size:12.5px;color:var(--t-light-2);
}
.cms-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:13px;}
.cms-more i{transition:transform 180ms ease-out;font-style:normal;}
.cms-card:hover .cms-more i{transform:translateX(4px);}
.empty{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
  padding:46px 26px;text-align:center;
}
.empty-ico{
  width:96px;height:72px;margin:0 auto 18px;border-radius:12px;
  background:linear-gradient(120deg,#EFEBFF,#F8F6FF);border:1px solid var(--line);
}
.empty b{display:block;font-size:16px;font-weight:600;}
.empty p{margin-top:8px;font-size:14px;color:var(--t-light-2);}
.empty .btn{margin-top:20px;}

/* ---------- FAQ ---------- */
.faq{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--t-light);
  transition:background 180ms ease-out;
}
.faq-q:hover{background:#FBFAFF;}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-3px;}
.faq-plus{position:relative;width:18px;height:18px;flex:0 0 18px;}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform 220ms ease-out,opacity 220ms ease-out;
}
.faq-plus::before{width:14px;height:2px;}
.faq-plus::after{width:2px;height:14px;}
.faq-item.open .faq-plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease-out;background:var(--mist);}
.faq-a p{padding:4px 22px 20px;font-size:14.5px;color:var(--t-light-2);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:linear-gradient(115deg,#0D0B1F,#1B1150 62%,#0D0B1F);
  color:var(--t-dark);border-radius:18px;padding:48px 40px;
}
@media (max-width:639px){.cta-band{padding:34px 22px;}}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.22;
  background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;
}
.cta-inner{position:relative;z-index:2;}
.cta-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;}
.cta-note{margin-top:22px;font-size:12.5px;color:var(--t-dark-2);}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:var(--t-dark-2);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr;}
@media (min-width:700px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;}}
.footer h4{color:var(--t-dark);font-size:14px;font-weight:600;margin-bottom:16px;}
.footer p{font-size:13.5px;line-height:1.85;}
.footer li + li{margin-top:10px;}
.footer a{font-size:14px;transition:color 180ms ease-out;position:relative;}
.footer a:hover{color:#fff;}
.footer a:hover::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:var(--mint);}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-direction:column;gap:10px;align-items:center;text-align:center;
  font-size:12px;color:#6F67A0;
}
.footer-mark{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-mark b{color:var(--t-dark);font-size:15px;font-weight:700;}
.footer-chip{
  display:inline-block;margin-top:16px;padding:6px 13px;border-radius:999px;
  background:rgba(43,232,192,.12);color:#5BF3D2;font-size:12px;font-weight:600;
}

.rise{opacity:0;transform:translateY(12px);transition:opacity 320ms ease-out,transform 320ms ease-out;}
.rise.in{opacity:1;transform:none;}

/* roulang page: article */
:root{
    --ink-900:#0D0B1F;
    --ink-800:#131029;
    --ink-700:#1B1738;
    --purple:#5B2EFF;
    --purple-soft:rgba(91,46,255,.12);
    --purple-line:rgba(91,46,255,.28);
    --mint:#2BE8C0;
    --orange:#FF5B2E;
    --paper:#F5F3FF;
    --card:#FFFFFF;
    --line:#E4DFFF;
    --text:#14122B;
    --text-soft:#5C5878;
    --on-dark:#F2EEFF;
    --on-dark-soft:#A79FD6;
    --r-lg:14px;
    --r-sm:10px;
    --sh:0 8px 24px rgba(91,46,255,.10);
    --sh-hover:0 16px 38px rgba(91,46,255,.20);
    --ease:180ms cubic-bezier(.22,.61,.36,1);
    --nav-w:240px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    letter-spacing:.02em;
    color:var(--text);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;transition:color var(--ease),opacity var(--ease);}
  button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  input,select,textarea{font:inherit;color:inherit;}
  :focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px;}

  /* ---------- 布局骨架 ---------- */
  .layout{min-height:100vh;}
  .content{min-width:0;}
  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
  @media (max-width:1023px){.wrap{padding:0 24px;}}
  @media (max-width:640px){.wrap{padding:0 16px;}}

  /* ---------- 侧边导航 ---------- */
  .sidebar{display:none;}
  .side-nav{display:flex;flex-direction:column;height:100%;padding:26px 16px 20px;}
  .side-brand{display:flex;align-items:center;gap:10px;padding:0 8px 20px;border-bottom:1px solid rgba(255,255,255,.08);}
  .logo-mark{
    width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;
    font-weight:800;font-size:18px;color:#fff;
    background:linear-gradient(135deg,var(--purple),#8A6BFF);
    border-radius:12px 4px 12px 4px;
    box-shadow:0 6px 18px rgba(91,46,255,.45);
  }
  .side-brand b{font-size:15px;font-weight:700;color:var(--on-dark);line-height:1.35;letter-spacing:.01em;}
  .side-title{font-size:12px;letter-spacing:.16em;color:var(--on-dark-soft);padding:22px 10px 10px;text-transform:uppercase;}
  .side-link{
    position:relative;display:flex;align-items:center;gap:10px;
    padding:11px 12px;margin-bottom:4px;border-radius:10px;
    font-size:14px;color:var(--on-dark-soft);
    transition:background var(--ease),color var(--ease),transform var(--ease);
  }
  .side-link svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .side-link:hover{background:rgba(255,255,255,.06);color:var(--on-dark);}
  .side-link.active{background:rgba(91,46,255,.18);color:var(--on-dark);font-weight:600;}
  .side-link.active::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--mint);
  }
  .side-foot{margin-top:auto;padding:16px 10px 0;border-top:1px solid rgba(255,255,255,.08);}
  .side-foot p{font-size:12px;color:var(--on-dark-soft);line-height:1.7;margin-bottom:12px;}
  .side-cta{
    display:flex;align-items:center;justify-content:center;gap:6px;
    width:100%;padding:10px 12px;border-radius:10px;
    font-size:13px;font-weight:600;color:#fff;
    background:var(--purple);
    clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
    transition:filter var(--ease),box-shadow var(--ease);
  }
  .side-cta:hover{filter:brightness(1.08);box-shadow:0 10px 24px rgba(91,46,255,.45);}

  /* ---------- 移动端顶栏 ---------- */
  .topbar{
    position:sticky;top:0;z-index:60;height:60px;
    display:flex;align-items:center;justify-content:space-between;
    padding:0 16px;background:var(--ink-900);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .topbar .brand{display:flex;align-items:center;gap:10px;}
  .topbar .brand b{font-size:14px;font-weight:700;color:var(--on-dark);}
  .topbar .logo-mark{width:32px;height:32px;flex-basis:32px;font-size:15px;border-radius:10px 4px 10px 4px;}
  .hamburger{
    width:40px;height:40px;display:grid;place-items:center;border-radius:10px;
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  }
  .hamburger span{display:block;width:18px;height:2px;background:var(--on-dark);border-radius:2px;margin:2.5px 0;transition:transform var(--ease),opacity var(--ease);}
  .hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
  .hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;z-index:80;
    background:var(--ink-900);border-left:1px solid rgba(255,255,255,.1);
    transform:translateX(102%);transition:transform 260ms cubic-bezier(.22,.61,.36,1);
    overflow-y:auto;display:flex;flex-direction:column;
  }
  .drawer.open{transform:translateX(0);}
  .drawer .side-nav{padding-top:20px;}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(6,4,18,.62);z-index:70;
    opacity:0;visibility:hidden;transition:opacity 240ms ease,visibility 240ms ease;
  }
  .drawer-mask.show{opacity:1;visibility:visible;}
  body.locked{overflow:hidden;}

  @media (min-width:1024px){
    .topbar,.drawer,.drawer-mask{display:none;}
    .sidebar{
      display:block;position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
      background:var(--ink-900);border-right:1px solid rgba(255,255,255,.09);
      overflow-y:auto;z-index:50;
    }
    .content{margin-left:var(--nav-w);}
  }

  /* ---------- 页面头部区 ---------- */
  .page-head{
    background:var(--ink-900);
    background-image:
      radial-gradient(circle at 78% 18%,rgba(91,46,255,.34),transparent 46%),
      linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
    background-size:auto,26px 26px,26px 26px;
    padding:38px 0 42px;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--on-dark-soft);margin-bottom:18px;}
  .crumbs a{color:var(--on-dark-soft);border-bottom:1px solid transparent;}
  .crumbs a:hover{color:var(--on-dark);border-bottom-color:var(--mint);}
  .crumbs .sep{color:rgba(167,159,214,.55);}
  .crumbs b{color:var(--on-dark);font-weight:600;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:.04em;
  }
  .badge-purple{background:var(--purple-soft);color:var(--purple);}
  .badge-dark{background:rgba(91,46,255,.28);color:#CFC2FF;}
  .badge-mint{background:rgba(43,232,192,.16);color:#7FF0DA;}
  .badge-orange{background:rgba(255,91,46,.16);color:#FFA183;}

  .article-title{
    font-size:44px;font-weight:800;line-height:1.2;
    color:var(--on-dark);letter-spacing:.01em;margin:16px 0 18px;
    max-width:900px;
  }
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--on-dark-soft);}
  .article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(167,159,214,.6);}
  @media (max-width:640px){
    .page-head{padding:26px 0 30px;}
    .article-title{font-size:30px;}
  }

  /* ---------- 主内容 ---------- */
  .main{padding:44px 0 72px;}
  .article-shell{display:block;}

  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--sh);transition:box-shadow var(--ease),transform var(--ease);
  }
  .article-card{padding:40px 42px 36px;max-width:800px;margin:0 auto;}
  @media (max-width:640px){.article-card{padding:24px 18px 26px;border-radius:12px;}}

  /* 正文排版 */
  .article-body{font-size:17px;line-height:1.9;color:var(--text);}
  .article-body > *:first-child{margin-top:0;}
  .article-body p{margin:0 0 20px;}
  .article-body h2{
    position:relative;font-size:20px;font-weight:700;line-height:1.5;
    color:var(--text);margin:38px 0 18px;padding-left:14px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:3px;
    background:var(--mint);
  }
  .article-body h3{font-size:17px;font-weight:600;color:var(--text);margin:26px 0 12px;}
  .article-body h4{font-size:16px;font-weight:600;color:var(--text-soft);margin:20px 0 10px;}
  .article-body ul,.article-body ol{padding-left:24px;margin:0 0 20px;}
  .article-body ul li{list-style:disc;margin-bottom:8px;}
  .article-body ol li{list-style:decimal;margin-bottom:8px;}
  .article-body li::marker{color:var(--purple);}
  .article-body blockquote{
    margin:0 0 22px;padding:16px 20px;border-left:3px solid var(--purple);
    background:var(--paper);border-radius:0 10px 10px 0;color:var(--text-soft);
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body img{border-radius:12px;margin:24px auto;height:auto;}
  .article-body figure{margin:24px 0;}
  .article-body figcaption{font-size:13px;color:var(--text-soft);text-align:center;margin-top:8px;}
  .article-body a{color:var(--purple);border-bottom:1px solid var(--purple-line);}
  .article-body a:hover{border-bottom-color:var(--purple);}
  .article-body strong{font-weight:700;}
  .article-body code{
    font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
    font-size:14px;background:var(--paper);color:#3A2E86;
    padding:2px 6px;border-radius:6px;border:1px solid var(--line);
  }
  .article-body pre{
    background:var(--ink-900);color:#E9E4FF;padding:18px;border-radius:12px;
    overflow-x:auto;font-size:14px;line-height:1.7;margin:0 0 22px;
  }
  .article-body pre code{background:none;border:0;color:inherit;padding:0;}
  .article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px;display:block;overflow-x:auto;}
  .article-body th{background:var(--ink-900);color:#fff;font-weight:600;padding:12px 14px;text-align:left;white-space:nowrap;}
  .article-body td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--text-soft);}
  .article-body tbody tr:nth-child(even){background:#FBFAFF;}
  .article-body hr{border:0;border-top:1px dashed var(--line);margin:32px 0;}

  /* 空态 */
  .empty{
    text-align:center;padding:48px 20px;border:1px dashed var(--line);border-radius:var(--r-lg);
    background:linear-gradient(180deg,#FBFAFF,#F5F3FF);
  }
  .empty-visual{
    width:96px;height:72px;margin:0 auto 18px;border-radius:12px;
    background:linear-gradient(120deg,#E7E1FF,#D6CEFF 55%,#C3B8FF);
    position:relative;overflow:hidden;
  }
  .empty-visual::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.75) 50%,transparent 70%);
    animation:sheen 2.4s infinite;
  }
  @keyframes sheen{0%{transform:translateX(-100%);}60%,100%{transform:translateX(100%);}}
  .empty h3{font-size:18px;font-weight:700;margin-bottom:8px;}
  .empty p{font-size:14px;color:var(--text-soft);margin-bottom:18px;}

  /* 目录 */
  .toc{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--sh);padding:22px 20px;
  }
  .toc h2{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
  .toc h2::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--mint);}
  .toc ol li{margin-bottom:2px;}
  .toc ol li a{
    display:block;font-size:13.5px;color:var(--text-soft);line-height:1.6;
    padding:6px 10px;border-radius:8px;border-left:2px solid transparent;
    transition:background var(--ease),color var(--ease),border-color var(--ease);
  }
  .toc ol li a:hover{background:var(--paper);color:var(--purple);border-left-color:var(--purple);}
  .toc ol li.lvl3 a{padding-left:22px;font-size:13px;opacity:.86;}

  .toc-mobile{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--sh);margin-bottom:18px;overflow:hidden;
  }
  .toc-mobile summary{
    cursor:pointer;list-style:none;padding:14px 18px;font-size:15px;font-weight:600;
    display:flex;align-items:center;justify-content:space-between;color:var(--text);
  }
  .toc-mobile summary::-webkit-details-marker{display:none;}
  .toc-mobile summary::after{
    content:"+";font-size:20px;line-height:1;color:var(--purple);transition:transform var(--ease);
  }
  .toc-mobile[open] summary::after{transform:rotate(45deg);}
  .toc-mobile ol{padding:0 16px 16px;background:var(--paper);}
  .toc-mobile ol li a{display:block;font-size:14px;color:var(--text-soft);padding:7px 8px;border-radius:8px;}
  .toc-mobile ol li a:hover{background:#fff;color:var(--purple);}
  .toc-mobile ol li.lvl3 a{padding-left:20px;font-size:13px;}

  @media (min-width:1280px){
    .article-shell{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:32px;align-items:start;}
    .article-card{margin:0 auto;}
    .toc{position:sticky;top:24px;}
    .toc-mobile{display:none;}
  }
  @media (max-width:1279px){
    .toc{display:none;}
  }

  /* ---------- 相关推荐 ---------- */
  .section{padding:64px 0 0;}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;}
  .section-head h2{font-size:26px;font-weight:700;line-height:1.3;color:var(--text);}
  .section-head p{font-size:14px;color:var(--text-soft);}
  @media (max-width:640px){
    .section{padding:48px 0 0;}
    .section-head h2{font-size:22px;}
  }

  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  @media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (max-width:640px){.card-grid{grid-template-columns:1fr;gap:18px;}}

  .post-card{
    display:flex;flex-direction:column;overflow:hidden;background:var(--card);
    border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh);
    transition:box-shadow var(--ease),transform var(--ease);
  }
  .post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
  .post-thumb{position:relative;aspect-ratio:16/10;background:linear-gradient(120deg,#EDE8FF,#DCD4FF);overflow:hidden;}
  .post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease;}
  .post-card:hover .post-thumb img{transform:scale(1.04);}
  .post-thumb .badge{position:absolute;top:12px;left:12px;background:rgba(13,11,31,.72);color:#D9D1FF;backdrop-filter:blur(4px);}
  .post-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1;}
  .post-body h3{font-size:16px;font-weight:600;line-height:1.55;color:var(--text);margin-bottom:10px;}
  .post-body p{font-size:13.5px;line-height:1.8;color:var(--text-soft);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;}
  .post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-soft);}
  .post-foot .more{display:inline-flex;align-items:center;gap:6px;color:var(--purple);font-weight:600;}
  .post-foot .more svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease);}
  .post-card:hover .post-foot .more svg{transform:translateX(4px);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 24px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
    transition:filter var(--ease),box-shadow var(--ease),transform var(--ease),background var(--ease),color var(--ease);
    clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
  }
  .btn:active{transform:translateY(1px);}
  .btn-primary{background:var(--purple);color:#fff;box-shadow:0 10px 24px rgba(91,46,255,.28);}
  .btn-primary:hover{filter:brightness(1.08);box-shadow:0 14px 32px rgba(91,46,255,.42);}
  .btn-accent{background:var(--orange);color:#fff;box-shadow:0 10px 24px rgba(255,91,46,.28);}
  .btn-accent:hover{filter:brightness(1.08);box-shadow:0 14px 32px rgba(255,91,46,.42);}
  .btn-ghost{background:transparent;color:var(--purple);box-shadow:inset 0 0 0 1px var(--purple-line);}
  .btn-ghost:hover{background:var(--purple-soft);}
  .btn-dark{background:rgba(255,255,255,.07);color:var(--on-dark);box-shadow:inset 0 0 0 1px rgba(255,255,255,.16);}
  .btn-dark:hover{background:rgba(255,255,255,.14);}
  .btn[disabled]{opacity:.45;box-shadow:none;filter:none;pointer-events:none;}

  .end-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  @media (max-width:640px){.end-actions .btn{flex:1 1 100%;}}

  /* ---------- 底部 CTA ---------- */
  .cta-band{margin-top:64px;background:var(--ink-900);border-radius:18px;padding:38px 36px;position:relative;overflow:hidden;}
  .cta-band::after{
    content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
    background:radial-gradient(circle,rgba(91,46,255,.5),transparent 68%);
  }
  .cta-band h2{font-size:26px;font-weight:700;color:var(--on-dark);line-height:1.35;margin-bottom:12px;position:relative;}
  .cta-band p{font-size:14.5px;color:var(--on-dark-soft);max-width:640px;margin-bottom:24px;position:relative;}
  .cta-band .actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;}
  @media (max-width:640px){
    .cta-band{padding:26px 20px;border-radius:14px;}
    .cta-band h2{font-size:22px;}
    .cta-band .actions .btn{flex:1 1 100%;}
  }

  /* ---------- 页脚 ---------- */
  .footer{background:var(--ink-900);border-top:1px solid rgba(255,255,255,.08);padding:56px 0 28px;margin-top:72px;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:34px;}
  @media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px;}}
  @media (max-width:640px){.footer-grid{grid-template-columns:1fr;gap:24px;}}
  .footer-mark{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-mark b{font-size:15px;font-weight:700;color:var(--on-dark);}
  .footer p{font-size:13.5px;line-height:1.85;color:var(--on-dark-soft);}
  .footer h4{font-size:14px;font-weight:600;color:var(--on-dark);margin-bottom:14px;}
  .footer li{margin-bottom:9px;}
  .footer li a{font-size:14px;color:var(--on-dark-soft);}
  .footer li a:hover{color:#fff;border-bottom:1px solid var(--mint);}
  .footer-chip{
    display:inline-flex;margin-top:14px;padding:5px 12px;border-radius:999px;
    font-size:12px;color:#7FF0DA;background:rgba(43,232,192,.12);
  }
  .footer-bottom{
    margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:12px;color:rgba(167,159,214,.85);
  }

/* roulang page: category1 */
:root{
  --violet:#5B2EFF;
  --violet-soft:rgba(91,46,255,.10);
  --violet-soft-2:rgba(91,46,255,.16);
  --cyan:#2BE8C0;
  --orange:#FF5B2E;
  --ink:#0D0B1F;
  --ink-2:#151233;
  --mist:#F5F3FF;
  --card:#FFFFFF;
  --line:#E4DFFF;
  --text:#14122B;
  --muted:#5C5878;
  --text-on-dark:#F2EEFF;
  --muted-on-dark:#A79FD6;
  --r-lg:14px;
  --r-md:10px;
  --shadow:0 8px 24px rgba(91,46,255,.10);
  --shadow-hover:0 14px 34px rgba(91,46,255,.18);
  --nav-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.02em;
  color:var(--text);
  background:var(--mist);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}

/* ---------- 布局骨架 ---------- */
.layout{display:block;min-height:100vh;}
@media (min-width:1024px){
  .layout{display:grid;grid-template-columns:var(--nav-w) minmax(0,1fr);}
}
.main-content{min-width:0;overflow:hidden;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
@media (max-width:1023px){.container{padding:0 24px;}}
@media (max-width:639px){.container{padding:0 16px;}}

/* ---------- 移动端顶部条 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:60;
  height:60px;align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(13,11,31,.97);
  border-bottom:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(6px);
}
@media (max-width:1023px){.topbar{display:flex;}}
.brand{display:flex;align-items:center;gap:10px;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;flex:0 0 30px;
  background:linear-gradient(135deg,var(--violet),#8B6BFF);
  color:#fff;font-weight:800;font-size:15px;
  border-radius:8px;clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
}
.brand-text{color:var(--text-on-dark);font-weight:700;font-size:15px;}
.topbar-actions{display:flex;align-items:center;gap:10px;}
.menu-btn{
  width:40px;height:40px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.05);border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.menu-btn span{display:block;width:16px;height:2px;background:var(--text-on-dark);position:relative;}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--text-on-dark);}
.menu-btn span::before{top:-5px;}
.menu-btn span::after{top:5px;}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;z-index:80;
  background:var(--ink);padding:22px 18px 28px;
  transform:translateX(105%);transition:transform .28s ease-out;
  overflow-y:auto;border-left:1px solid rgba(255,255,255,.10);
}
.drawer.open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(8,6,20,.62);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .25s ease-out, visibility .25s;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:34px;height:34px;border-radius:9px;border:1px solid rgba(255,255,255,.16);
  background:transparent;color:var(--text-on-dark);cursor:pointer;font-size:18px;line-height:1;
}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  display:none;
  position:sticky;top:0;height:100vh;
  background:var(--ink);border-right:1px solid rgba(255,255,255,.10);
  padding:26px 16px 22px;flex-direction:column;justify-content:space-between;
  overflow-y:auto;
}
@media (min-width:1024px){.side-nav{display:flex;}}
.side-title{
  font-size:12px;letter-spacing:.16em;color:var(--muted-on-dark);
  text-transform:uppercase;padding:0 10px;margin-bottom:14px;
}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 12px 11px 14px;border-radius:10px;
  color:var(--muted-on-dark);font-size:14.5px;font-weight:500;
  transition:background .18s ease-out,color .18s ease-out;
  margin-bottom:4px;
}
.side-link svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.side-link:hover{background:rgba(255,255,255,.06);color:var(--text-on-dark);}
.side-link.active{background:var(--violet-soft);color:var(--text-on-dark);font-weight:600;}
.side-link.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;background:var(--cyan);}
.side-foot{border-top:1px solid rgba(255,255,255,.10);padding-top:16px;margin-top:18px;}
.side-note{font-size:12px;line-height:1.75;color:var(--muted-on-dark);margin-top:12px;}
.side-brand{display:flex;align-items:center;gap:10px;padding:0 8px 20px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 24px;border-radius:var(--r-md);border:1px solid transparent;
  font-weight:600;font-size:15px;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.btn:focus-visible{outline:none;box-shadow:inset 0 0 0 3px rgba(43,232,192,.9);}
.btn:active{transform:translateY(1px);}
.btn-violet{background:var(--violet);color:#fff;box-shadow:0 8px 20px rgba(91,46,255,.28);}
.btn-violet:hover{background:#6E45FF;box-shadow:0 12px 28px rgba(91,46,255,.38);}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(255,91,46,.28);}
.btn-orange:hover{background:#FF7048;box-shadow:0 12px 28px rgba(255,91,46,.36);}
.btn-ghost{background:transparent;color:var(--violet);border-color:var(--violet);}
.btn-ghost:hover{background:var(--violet-soft);}
.btn-ghost-light{background:transparent;color:var(--text-on-dark);border-color:rgba(255,255,255,.35);}
.btn-ghost-light:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.6);}
.btn-sm{padding:8px 16px;font-size:13.5px;}
.btn-block{width:100%;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-violet{background:var(--violet-soft-2);color:var(--violet);}
.badge-cyan{background:rgba(43,232,192,.16);color:#0E8D77;}
.badge-orange{background:rgba(255,91,46,.14);color:#C63B14;}
.badge-dark{background:rgba(255,255,255,.10);color:var(--text-on-dark);}
.badge-dark-cyan{background:rgba(43,232,192,.16);color:var(--cyan);}

/* ---------- 区块 ---------- */
.section{padding:88px 0;}
.section-light{background:var(--mist);}
.section-white{background:#fff;}
.section-dark{background:var(--ink);color:var(--text-on-dark);}
@media (max-width:1023px){.section{padding:64px 0;}}
@media (max-width:639px){.section{padding:52px 0;}}
.section-head{max-width:760px;margin-bottom:44px;}
.section-title{font-size:32px;font-weight:700;line-height:1.3;letter-spacing:.01em;}
.section-title-light{color:var(--text-on-dark);}
.section-sub{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.85;}
.section-sub-light{color:var(--muted-on-dark);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--violet);margin-bottom:14px;
}
.eyebrow-light{color:var(--cyan);}
.eyebrow::before{content:"";width:22px;height:2px;background:currentColor;border-radius:2px;}
@media (max-width:639px){
  .section-title{font-size:23px;}
  .section-sub{font-size:15px;}
}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--ink);color:var(--text-on-dark);overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.30;
}
.hero-deco{
  position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 12% 18%, rgba(43,232,192,.16), transparent 42%),
    radial-gradient(circle at 82% 78%, rgba(91,46,255,.24), transparent 46%),
    repeating-linear-gradient(0deg, rgba(255,255,255,.045) 0 1px, transparent 1px 5px);
  background-size:auto,auto,100% 5px;
  opacity:.85;pointer-events:none;
}
.hero-inner{position:relative;padding:52px 0 60px;}
@media (min-width:1024px){.hero-inner{padding:72px 0 84px;}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted-on-dark);margin-bottom:26px;}
.crumb a:hover{color:var(--text-on-dark);text-decoration:underline;}
.crumb-sep{opacity:.6;}
.crumb-current{color:var(--text-on-dark);font-weight:600;}
.hero-grid{display:grid;gap:40px;}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.2fr .8fr;align-items:center;gap:56px;}
}
.hero-h1{
  font-size:34px;font-weight:800;line-height:1.2;letter-spacing:.01em;color:var(--text-on-dark);
}
@media (min-width:1024px){.hero-h1{font-size:48px;}}
.hero-lead{margin-top:18px;font-size:16.5px;line-height:1.9;color:var(--muted-on-dark);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.fact-pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  font-size:13px;color:var(--text-on-dark);
}
.fact-pill i{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:inline-block;}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 24px 60px rgba(0,0,0,.42);
  aspect-ratio:16/11;background:rgba(255,255,255,.05);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;opacity:.92;}
.hero-visual-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(13,11,31,.82);border:1px solid rgba(255,255,255,.16);
  padding:9px 14px;border-radius:var(--r-md);font-size:13px;color:var(--text-on-dark);
  backdrop-filter:blur(4px);
}

/* ---------- 速览条 ---------- */
.quick-strip{display:grid;gap:18px;margin-top:-44px;position:relative;z-index:5;}
@media (min-width:640px){.quick-strip{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.quick-strip{grid-template-columns:repeat(3,1fr);gap:24px;}}
.quick-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 24px 22px;box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.quick-num{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--violet);}
.quick-title{font-size:18px;font-weight:700;margin-top:10px;}
.quick-text{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.8;}

/* ---------- 步骤时间轴 ---------- */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;top:6px;bottom:6px;left:19px;width:2px;
  background:linear-gradient(180deg,var(--violet),rgba(43,232,192,.75));
  border-radius:2px;
}
@media (min-width:1024px){
  .timeline::before{left:50%;transform:translateX(-1px);}
}
.step{position:relative;display:grid;grid-template-columns:44px minmax(0,1fr);gap:18px;padding-bottom:32px;}
.step:last-child{padding-bottom:0;}
.step-node{
  grid-column:1;grid-row:1;
  width:40px;height:40px;border-radius:12px;
  background:var(--violet);color:#fff;font-weight:800;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px rgba(91,46,255,.32);
  clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);
  position:relative;z-index:2;
}
.step-card{
  grid-column:2;grid-row:1;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 26px;box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.step-title{font-size:19px;font-weight:700;}
.step-text{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.85;}
.step-list{margin-top:14px;display:grid;gap:8px;}
.step-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text);}
.step-list li::before{
  content:"";width:6px;height:6px;flex:0 0 6px;margin-top:10px;border-radius:2px;
  background:var(--cyan);
}
.step-tip{
  margin-top:16px;padding:12px 14px;border-radius:var(--r-md);
  background:var(--mist);border:1px dashed var(--line);
  font-size:13.5px;color:var(--muted);
}
@media (min-width:1024px){
  .step{grid-template-columns:minmax(0,1fr) 72px minmax(0,1fr);gap:0;padding-bottom:36px;}
  .step-node{grid-column:2;grid-row:1;justify-self:center;align-self:start;}
  .step-card{grid-row:1;}
  .step:nth-child(odd) .step-card{grid-column:1;margin-right:28px;}
  .step:nth-child(even) .step-card{grid-column:3;margin-left:28px;}
}

/* ---------- 清单（深色） ---------- */
.check-grid{display:grid;gap:18px;}
@media (min-width:640px){.check-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.check-grid{grid-template-columns:repeat(4,1fr);gap:22px;}}
.check-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-lg);padding:24px 22px;
  transition:transform .18s ease-out,background .18s ease-out;
}
.check-card:hover{transform:translateY(-2px);background:rgba(255,255,255,.09);}
.check-icon{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(43,232,192,.16);color:var(--cyan);margin-bottom:16px;
}
.check-icon svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.check-title{font-size:16.5px;font-weight:600;color:var(--text-on-dark);}
.check-text{margin-top:8px;font-size:14px;color:var(--muted-on-dark);line-height:1.8;}

/* ---------- 卡点对照 ---------- */
.issue-grid{display:grid;gap:16px;}
@media (min-width:1024px){.issue-grid{grid-template-columns:repeat(2,1fr);gap:20px;}}
.issue-card{
  display:grid;grid-template-columns:minmax(0,1fr);gap:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.issue-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.issue-head{
  padding:18px 22px;background:linear-gradient(90deg,rgba(91,46,255,.10),rgba(43,232,192,.10));
  display:flex;align-items:center;gap:10px;font-weight:600;font-size:15.5px;
}
.issue-head .dot{width:8px;height:8px;border-radius:2px;background:var(--orange);flex:0 0 8px;}
.issue-body{padding:18px 22px 22px;}
.issue-body p{font-size:14.5px;color:var(--muted);line-height:1.85;}
.issue-body ol{margin-top:12px;display:grid;gap:8px;counter-reset:issue;}
.issue-body ol li{
  position:relative;padding-left:26px;font-size:14.5px;color:var(--text);counter-increment:issue;
}
.issue-body ol li::before{
  content:counter(issue);position:absolute;left:0;top:3px;
  width:18px;height:18px;border-radius:6px;background:var(--violet-soft-2);color:var(--violet);
  font-size:11.5px;font-weight:700;display:flex;align-items:center;justify-content:center;
}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);margin-top:8px;}
.faq details{border-bottom:1px solid var(--line);background:#fff;}
.faq details[open]{background:#FCFAFF;}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);
  list-style:none;
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q:hover{color:var(--violet);}
.faq-plus{position:relative;width:16px;height:16px;flex:0 0 16px;}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--violet);border-radius:2px;transition:transform .22s ease-out;
}
.faq-plus::before{left:0;top:7px;width:16px;height:2px;}
.faq-plus::after{top:0;left:7px;width:2px;height:16px;}
details[open] .faq-plus::after{transform:scaleY(0);}
details[open] .faq-plus::before{background:var(--cyan);}
.faq-a{padding:0 22px 22px;color:var(--muted);font-size:15px;line-height:1.9;}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;background:var(--ink);color:var(--text-on-dark);overflow:hidden;}
.cta-band-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.22;
}
.cta-inner{position:relative;padding:64px 0;}
@media (max-width:639px){.cta-inner{padding:52px 0;}}
.cta-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);padding:40px 36px;
  display:grid;gap:32px;
}
@media (min-width:1024px){.cta-card{grid-template-columns:1.3fr .7fr;align-items:center;padding:48px 44px;}}
.cta-title{font-size:28px;font-weight:700;line-height:1.35;}
@media (max-width:639px){.cta-title{font-size:22px;}}
.cta-text{margin-top:14px;font-size:15px;color:var(--muted-on-dark);line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-note{margin-top:16px;font-size:12.5px;color:var(--muted-on-dark);}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:var(--muted-on-dark);padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}}
.footer-mark{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-mark b{color:var(--text-on-dark);font-size:16px;}
.footer p{font-size:14px;line-height:1.85;}
.footer h4{font-size:14px;font-weight:600;color:var(--text-on-dark);margin-bottom:14px;}
.footer ul li{margin-bottom:10px;}
.footer ul a{font-size:14px;color:var(--muted-on-dark);transition:color .18s ease-out,padding .18s ease-out;}
.footer ul a:hover{color:#fff;padding-left:3px;text-decoration:underline;}
.footer-chip{
  display:inline-block;margin-top:14px;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  font-size:12px;color:var(--text-on-dark);
}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;text-align:center;
  font-size:12px;color:var(--muted-on-dark);
}

/* roulang page: category2 */
:root{
  --brand:#5B2EFF;
  --brand-2:#8B6BFF;
  --brand-soft:rgba(91,46,255,.10);
  --brand-active:rgba(91,46,255,.34);
  --mint:#2BE8C0;
  --orange:#FF5B2E;
  --ink:#0D0B1F;
  --mist:#F5F3FF;
  --card:#FFFFFF;
  --line:#E4DFFF;
  --t-dark:#F2EEFF;
  --t-dark-2:#A79FD6;
  --t-ink:#14122B;
  --t-ink-2:#5C5878;
  --r:14px;
  --r-sm:10px;
  --shadow:0 8px 24px rgba(91,46,255,.10);
  --shadow-hover:0 14px 34px rgba(91,46,255,.18);
  --side-w:240px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.02em;
  color:var(--t-ink);
  background:var(--mist);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{list-style:none;padding:0;}

.cut{clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));}
.cut-sm{clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,6px 100%,0 calc(100% - 6px));}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--ink);
  border-right:1px solid rgba(255,255,255,.08);
  padding:26px 18px 22px;
  display:flex;
  flex-direction:column;
  gap:26px;
  overflow-y:auto;
  z-index:40;
}
.side-brand{
  display:flex;
  align-items:center;
  gap:11px;
  color:var(--t-dark);
  font-weight:800;
  font-size:16px;
  letter-spacing:.01em;
}
.logo-mark{
  width:36px;height:36px;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(135deg,#5B2EFF,#8B6BFF);
  color:#fff;font-weight:800;font-size:17px;
  border-radius:10px;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
}
.side-title{
  font-size:12px;
  letter-spacing:.14em;
  font-weight:600;
  color:var(--t-dark-2);
  margin:0 0 10px 2px;
}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 12px 11px 14px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--t-dark-2);
  transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.side-link svg{
  width:18px;height:18px;flex:none;
  fill:none;stroke:currentColor;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;
}
.side-link:hover{color:var(--t-dark);background:rgba(255,255,255,.06);}
.side-link:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.side-link.active{color:#fff;background:var(--brand-active);}
.side-link.active::before{
  content:"";
  position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--mint);
}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 14px;
  border-radius:10px;
  background:var(--orange);
  color:#fff;font-weight:600;font-size:14px;
  box-shadow:0 10px 22px rgba(255,91,46,.28);
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
}
.side-cta:hover{background:#ff6c43;transform:translateY(-2px);box-shadow:0 14px 26px rgba(255,91,46,.34);}
.side-cta:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.side-note{
  font-size:12px;
  line-height:1.7;
  color:var(--t-dark-2);
  padding-top:14px;
  border-top:1px solid rgba(255,255,255,.10);
}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{display:none;}
.scrim{
  position:fixed;inset:0;background:rgba(5,3,16,.66);
  opacity:0;visibility:hidden;transition:opacity .26s ease-out;
  z-index:60;
}
.scrim.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;
  width:300px;max-width:86vw;
  background:var(--ink);
  border-left:1px solid rgba(255,255,255,.10);
  padding:22px 18px;
  transform:translateX(103%);
  transition:transform .26s ease-out;
  overflow-y:auto;
  z-index:70;
}
.drawer.open{transform:none;}
.drawer-brand{
  display:flex;align-items:center;gap:11px;
  color:var(--t-dark);font-weight:800;font-size:16px;
  margin-bottom:22px;
}
body.locked{overflow:hidden;}

/* ============ 内容区 ============ */
.content{
  margin-left:var(--side-w);
  background:var(--mist);
  min-height:100vh;
  padding:32px;
}
.page-body{display:flex;flex-direction:column;}

/* ============ HERO ============ */
.hero{
  position:relative;
  overflow:hidden;
  border-radius:16px;
  background-color:var(--ink);
  background-image:
    linear-gradient(104deg,rgba(13,11,31,.96) 0%,rgba(13,11,31,.88) 46%,rgba(13,11,31,.58) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center right;
  color:var(--t-dark);
  padding:58px 42px 52px;
  min-height:430px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.045) 0 1px,transparent 1px 7px);
  opacity:.55;
  pointer-events:none;
}
.hero-dots{
  position:absolute;top:26px;right:26px;
  width:150px;height:96px;
  background-image:radial-gradient(rgba(43,232,192,.55) 1.4px,transparent 1.4px);
  background-size:16px 16px;
  opacity:.65;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:760px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.12em;font-weight:600;
  color:var(--mint);
  background:rgba(43,232,192,.12);
  border:1px solid rgba(43,232,192,.28);
  padding:6px 14px;
  border-radius:999px;
  margin-bottom:20px;
}
.hero-title{
  font-size:46px;
  line-height:1.2;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--t-dark);
}
.hero-sub{
  margin-top:18px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--t-dark-2);
  max-width:660px;
}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  margin-top:26px;
  font-size:13px;
  color:var(--t-dark-2);
}
.hero-trust span{display:inline-flex;align-items:center;gap:8px;}
.hero-trust span::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--mint);flex:none;
}
.hero-badge{
  position:absolute;right:28px;bottom:26px;z-index:3;
  font-size:12.5px;font-weight:600;
  padding:9px 16px;
  color:#fff;
  background:rgba(91,46,255,.85);
  border:1px solid rgba(255,255,255,.18);
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 24px;
  border-radius:10px;
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
}
.btn:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.btn:active{transform:translateY(1px);}
.btn-lg{padding:15px 30px;font-size:16px;}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 10px 24px rgba(255,91,46,.28);}
.btn-primary:hover{background:#ff6c43;transform:translateY(-2px);box-shadow:0 15px 30px rgba(255,91,46,.34);}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(91,46,255,.28);}
.btn-brand:hover{background:#6c43ff;transform:translateY(-2px);box-shadow:0 15px 30px rgba(91,46,255,.32);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);}
.btn-ghost-light{background:transparent;border-color:rgba(242,238,255,.4);color:var(--t-dark);}
.btn-ghost-light:hover{background:rgba(255,255,255,.10);border-color:#fff;transform:translateY(-2px);}
.btn-soft{background:var(--brand-soft);color:var(--brand);}
.btn-soft:hover{background:rgba(91,46,255,.18);transform:translateY(-2px);}
.btn[disabled],.btn:disabled{opacity:.45;box-shadow:none;pointer-events:none;}
.btn-note{
  font-size:12.5px;
  color:var(--t-dark-2);
  margin-top:14px;
  line-height:1.75;
}
.btn-note.on-light{color:var(--t-ink-2);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;
  padding:5px 12px;
  border-radius:999px;
}
.badge-brand{background:var(--brand-soft);color:var(--brand);}
.badge-mint{background:rgba(43,232,192,.16);color:#0f9c7f;}
.badge-orange{background:rgba(255,91,46,.14);color:#d8410f;}
.badge-gray{background:rgba(167,159,214,.20);color:#5C5878;}
.tag{
  display:inline-block;
  font-size:12.5px;
  padding:4px 11px;
  border-radius:8px;
  background:var(--mist);
  color:var(--t-ink-2);
  border:1px solid var(--line);
}

/* ============ 板块 ============ */
.section{margin-top:78px;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--brand);
  margin-bottom:12px;
}
.h2{
  font-size:32px;
  line-height:1.3;
  font-weight:700;
  color:var(--t-ink);
}
.h3{
  font-size:20px;
  line-height:1.4;
  font-weight:600;
  color:var(--t-ink);
}
.section-head p{
  margin-top:14px;
  font-size:15.5px;
  color:var(--t-ink-2);
  line-height:1.85;
}
.section-dark{
  background:var(--ink);
  border-radius:16px;
  padding:48px 40px;
  color:var(--t-dark);
}
.section-dark .h2{color:var(--t-dark);}
.section-dark .eyebrow{color:var(--mint);}
.section-dark .section-head p{color:var(--t-dark-2);}

/* ============ 双平台下载卡 ============ */
.platform-grid{
  display:grid;
  grid-template-columns:1.55fr 1fr;
  gap:24px;
  align-items:start;
}
.p-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  padding:30px;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.p-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.p-card.ios{background:#FBFAFF;}
.p-card-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.p-card p.lead{
  margin-top:16px;
  font-size:15px;
  color:var(--t-ink-2);
  line-height:1.85;
}
.p-shot{
  margin-top:22px;
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:var(--mist);
}
.p-shot img{width:100%;height:100%;}
.check-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.check-list li{
  display:flex;gap:10px;
  font-size:14.5px;
  color:var(--t-ink-2);
  line-height:1.75;
}
.check-list li::before{
  content:"";
  flex:none;
  width:7px;height:7px;
  margin-top:9px;
  border-radius:2px;
  background:var(--mint);
  transform:rotate(45deg);
}

/* ============ 深色数据卡 ============ */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.stat{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r);
  padding:24px 22px;
  transition:background-color .18s ease-out,transform .18s ease-out;
}
.stat:hover{background:rgba(255,255,255,.09);transform:translateY(-2px);}
.stat .k{font-size:13px;color:var(--t-dark-2);}
.stat .v{
  margin-top:10px;
  font-size:23px;
  font-weight:800;
  color:var(--mint);
  letter-spacing:.02em;
  line-height:1.3;
}
.stat .s{margin-top:8px;font-size:12.5px;color:var(--t-dark-2);line-height:1.7;}

/* ============ 系统要求对照 ============ */
.spec-table{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.spec-row{
  display:grid;
  grid-template-columns:1.05fr 1fr 1fr;
  gap:18px;
  padding:16px 24px;
  border-top:1px solid var(--line);
  align-items:center;
}
.spec-row:first-child{border-top:0;}
.spec-head{
  background:var(--brand);
  color:#fff;
  font-size:14px;
  font-weight:600;
  padding:15px 24px;
  border-top:0;
}
.spec-row:not(.spec-head):nth-child(odd){background:#FBFAFF;}
.spec-k{font-size:14px;color:var(--t-ink-2);}
.spec-v{font-size:14.5px;color:var(--t-ink);font-weight:600;line-height:1.7;}

/* ============ 流程步骤 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:16px;
}
.step{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:24px 20px;
  box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.step-num{
  width:34px;height:34px;
  display:grid;place-items:center;
  font-size:15px;font-weight:800;
  color:var(--brand);
  background:var(--brand-soft);
  clip-path:polygon(0 0,calc(100% - 7px) 0,100% 7px,100% 100%,7px 100%,0 calc(100% - 7px));
}
.step h3{font-size:16px;font-weight:600;color:var(--t-ink);margin-top:16px;}
.step p{font-size:14px;color:var(--t-ink-2);line-height:1.75;margin-top:10px;}

/* ============ FAQ ============ */
.faq{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--t-ink);
  cursor:pointer;
  transition:background-color .18s ease-out,color .18s ease-out;
}
.faq-q:hover{background:var(--mist);}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.faq-icon{
  position:relative;
  width:16px;height:16px;flex:none;
  transition:transform .26s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-item.open .faq-q{color:var(--brand);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease-out;
  background:var(--mist);
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a-inner{
  padding:18px 24px 22px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--t-ink-2);
}

/* ============ 评价 ============ */
.quote-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.quote{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:26px 24px;
  box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.quote:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.quote-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;flex:none;
  border-radius:50%;
  background:linear-gradient(135deg,rgba(91,46,255,.22),rgba(43,232,192,.28));
  display:grid;place-items:center;
  font-size:14px;font-weight:700;color:var(--brand);
}
.quote-name{font-size:14.5px;font-weight:600;color:var(--t-ink);}
.quote-meta{font-size:12.5px;color:var(--t-ink-2);margin-top:2px;}
.stars{color:#17c39c;font-size:13px;letter-spacing:2px;margin-top:14px;}
.quote p{font-size:14.5px;color:var(--t-ink-2);line-height:1.85;margin-top:10px;}
.quote-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px;}

/* ============ CTA 带 ============ */
.cta-band{
  margin-top:78px;
  position:relative;
  overflow:hidden;
  border-radius:16px;
  background:var(--ink);
  background-image:
    linear-gradient(100deg,rgba(13,11,31,.97) 0%,rgba(13,11,31,.90) 55%,rgba(13,11,31,.70) 100%),
    url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  padding:52px 42px;
  color:var(--t-dark);
}
.cta-band .h2{color:var(--t-dark);}
.cta-band p{
  margin-top:14px;
  max-width:680px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--t-dark-2);
}
.cta-band .btn-note{max-width:680px;}

/* ============ 页脚 ============ */
.footer{
  margin-left:var(--side-w);
  background:var(--ink);
  color:var(--t-dark-2);
  padding:58px 0 24px;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer .wrap{
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.25fr;
  gap:34px;
}
.footer-mark{
  display:flex;align-items:center;gap:11px;
  color:#fff;font-weight:800;font-size:16px;
  margin-bottom:16px;
}
.footer h4{
  font-size:14px;font-weight:600;color:#fff;
  margin-bottom:14px;
}
.footer ul{display:flex;flex-direction:column;gap:10px;}
.footer a{
  font-size:14px;
  color:var(--t-dark-2);
  transition:color .18s ease-out,text-decoration-color .18s ease-out;
}
.footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer a:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:4px;}
.footer p{font-size:14px;line-height:1.85;}
.footer-chip{
  display:inline-block;
  margin-top:16px;
  font-size:12px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(43,232,192,.14);
  color:var(--mint);
}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  font-size:12px;
  color:var(--t-dark-2);
}

/* ============ 响应式 ============ */
@media (max-width:1279.98px){
  .hero-title{font-size:42px;}
  .h2{font-size:29px;}
  .steps{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023.98px){
  .sidebar{display:none;}
  .content{margin-left:0;padding:20px 16px 40px;}
  .footer{margin-left:0;padding:46px 0 20px;}
  .footer .wrap{padding:0 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .topbar{
    display:flex;
    position:sticky;top:0;
    height:60px;
    align-items:center;justify-content:space-between;
    padding:0 16px;
    background:var(--ink);
    border-bottom:1px solid rgba(255,255,255,.08);
    z-index:50;
  }
  .topbar .brand{
    display:flex;align-items:center;gap:10px;
    color:var(--t-dark);font-weight:800;font-size:15.5px;
  }
  .topbar .brand .logo-mark{width:32px;height:32px;font-size:15px;}
  .burger{
    width:42px;height:38px;
    display:grid;place-items:center;gap:0;
    background:rgba(255,255,255,.07);
    border:1px solid rgba(255,255,255,.14);
    border-radius:10px;
    cursor:pointer;
  }
  .burger:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
  .burger span{display:block;width:18px;height:2px;background:var(--t-dark);border-radius:2px;margin:2.5px 0;}
  .hero{padding:46px 26px 44px;min-height:auto;}
  .hero-title{font-size:36px;}
  .hero-badge{position:static;display:inline-block;margin-top:24px;align-self:flex-start;}
  .section-dark{padding:40px 26px;}
  .cta-band{padding:44px 26px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .platform-grid{grid-template-columns:1fr;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .hero-title{font-size:31px;line-height:1.25;}
  .hero-sub{font-size:15.5px;}
  .h2{font-size:23px;}
  .section{margin-top:54px;}
  .section-dark{padding:32px 20px;border-radius:14px;}
  .cta-band{margin-top:54px;padding:36px 20px;border-radius:14px;}
  .steps{grid-template-columns:1fr 1fr;gap:14px;}
  .quote-grid{grid-template-columns:1fr;}
  .spec-row{grid-template-columns:1fr;gap:8px;padding:18px 20px;}
  .spec-head{display:none;}
  .spec-k{font-weight:600;color:var(--t-ink);font-size:14.5px;}
  .spec-v{font-weight:500;font-size:14px;}
  .spec-v::before{content:attr(data-k) "：";color:var(--t-brand, #5B2EFF);font-weight:600;}
  .faq-q{padding:18px 18px;font-size:15px;}
  .faq-a-inner{padding:16px 18px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .p-card{padding:24px 20px;}
}
@media (max-width:519.98px){
  .hero{padding:38px 18px 36px;}
  .hero-title{font-size:27px;}
  .btn{width:100%;}
  .btn-row{gap:12px;}
  .stat-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .content{padding:16px 12px 32px;}
}

/* roulang page: category3 */
:root{
  --ink:#0D0B1F;
  --violet:#5B2EFF;
  --violet-soft:rgba(91,46,255,.12);
  --mint:#2BE8C0;
  --pulse:#FF5B2E;
  --mist:#F5F3FF;
  --card:#FFFFFF;
  --line:#E4DFFF;
  --t-light:#F2EEFF;
  --t-light-dim:#A79FD6;
  --t-dark:#14122B;
  --t-dark-dim:#5C5878;
  --r-sm:10px;
  --r-md:14px;
  --shadow:0 8px 24px rgba(91,46,255,.10);
  --shadow-lg:0 16px 40px rgba(91,46,255,.18);
  --side:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--mist);color:var(--t-dark);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.02em;-webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--t-dark);font-weight:800;letter-spacing:.01em}
h1{font-size:clamp(30px,3.6vw,50px);line-height:1.16;font-weight:800}
h2{font-size:clamp(22px,2.4vw,33px);line-height:1.3;font-weight:700}
h3{font-size:19px;line-height:1.4;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px}

/* ===== 布局骨架 ===== */
.layout{display:flex;align-items:flex-start;min-height:100vh}
.page{margin-left:var(--side);flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ===== 侧栏 ===== */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);z-index:60;
  display:flex;flex-direction:column;gap:14px;padding:22px 16px;overflow-y:auto;
  background:var(--ink);border-right:1px solid rgba(255,255,255,.09);
}
.brand{display:flex;align-items:center;gap:10px;padding:2px 6px 18px;border-bottom:1px solid rgba(255,255,255,.09)}
.brand-text b{display:block;color:var(--t-light);font-size:16px;font-weight:700;line-height:1.35}
.brand-text small{display:block;color:var(--t-light-dim);font-size:12px;letter-spacing:.06em}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 32px;
  width:32px;height:32px;border-radius:9px;font-size:16px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#5B2EFF,#7A5BFF);box-shadow:0 6px 16px rgba(91,46,255,.45);
}
.side-title{margin:6px 6px 4px;font-size:12px;letter-spacing:.14em;color:rgba(167,159,214,.75);font-weight:600}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;padding:11px 12px;
  border-radius:var(--r-sm);color:var(--t-light-dim);font-size:14.5px;font-weight:500;line-height:1.4;
  transition:background .18s ease,color .18s ease;
}
.side-link svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.side-link:hover{background:rgba(255,255,255,.07);color:var(--t-light)}
.side-link.active{background:rgba(91,46,255,.2);color:var(--t-light)}
.side-link.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--mint)}
.sidebar-foot{margin-top:auto;padding-top:18px;border-top:1px solid rgba(255,255,255,.09);display:flex;flex-direction:column;gap:10px}
.sidebar-note{font-size:12.5px;line-height:1.7;color:rgba(167,159,214,.9)}

/* ===== 移动端顶栏与抽屉 ===== */
.topbar,.drawer,.drawer-mask{display:none}
.hamburger{width:42px;height:38px;border-radius:9px;border:1px solid rgba(255,255,255,.18);display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-light)}
.brand-sm{display:flex;align-items:center;gap:9px;color:var(--t-light)}
.brand-sm b{font-size:15.5px;font-weight:700}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.1)}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid rgba(255,255,255,.18);color:var(--t-light);font-size:20px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:16px}
.drawer-foot{margin-top:auto;padding-top:18px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);
  transition:background .18s ease,box-shadow .18s ease,color .18s ease,transform .12s ease,border-color .18s ease;
}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--mint)}
.btn-primary{background:var(--violet);color:#fff;box-shadow:0 8px 20px rgba(91,46,255,.28)}
.btn-primary:hover{background:#6C42FF;box-shadow:0 12px 28px rgba(91,46,255,.42)}
.btn-pulse{background:var(--pulse);color:#fff;box-shadow:0 8px 20px rgba(255,91,46,.28)}
.btn-pulse:hover{background:#FF7148;box-shadow:0 12px 28px rgba(255,91,46,.4)}
.btn-ghost{background:transparent;border-color:rgba(91,46,255,.55);color:var(--violet)}
.btn-ghost:hover{background:rgba(91,46,255,.08);border-color:var(--violet)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.34);color:var(--t-light)}
.btn-ghost-light:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.55)}
.btn-sm{padding:10px 16px;font-size:13.5px}
.btn-xs{padding:8px 14px;font-size:13px}
.btn-block{width:100%}

/* ===== 徽章与标签 ===== */
.chip{display:inline-block;padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.04em}
.chip-mint{background:rgba(43,232,192,.14);color:var(--mint);border:1px solid rgba(43,232,192,.35)}
.chip-violet{background:var(--violet-soft);color:var(--violet)}
.badge{display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6}
.badge-new{background:rgba(43,232,192,.16);color:#0B8A72}
.badge-ux{background:rgba(91,46,255,.12);color:var(--violet)}
.badge-fix{background:rgba(255,91,46,.14);color:#BC3A18}
.badge-notice{background:rgba(92,88,120,.14);color:var(--t-dark-dim)}
.badge-cut{
  display:inline-block;margin-top:14px;padding:7px 14px;font-size:12.5px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,#5B2EFF,#7A5BFF);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:var(--ink);min-height:540px;display:flex;align-items:center;padding:74px 0 64px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34}
.hero-dots{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);background-size:22px 22px;opacity:.45;-webkit-mask-image:radial-gradient(65% 65% at 82% 22%,#000,transparent 70%);mask-image:radial-gradient(65% 65% at 82% 22%,#000,transparent 70%)}
.hero-lines{position:absolute;inset:0;background-image:repeating-linear-gradient(0deg,rgba(43,232,192,.07) 0 1px,transparent 1px 7px);opacity:.5}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(115% 85% at 10% 18%,rgba(91,46,255,.45),transparent 62%),linear-gradient(180deg,rgba(13,11,31,.4),rgba(13,11,31,.95))}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;width:100%}
.hero h1{color:var(--t-light);margin:16px 0 18px}
.hero-sub{max-width:560px;font-size:17px;line-height:1.85;color:var(--t-light-dim)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{margin-top:22px;font-size:13px;color:rgba(167,159,214,.9)}
.shot{margin:0;border-radius:var(--r-md);overflow:hidden;border:1px solid rgba(255,255,255,.16);box-shadow:0 22px 54px rgba(0,0,0,.5)}
.shot img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ===== 数据条 ===== */
.stats{background:var(--ink);padding:0 0 68px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-md);padding:20px 22px;transition:transform .18s ease,border-color .18s ease}
.stat:hover{transform:translateY(-2px);border-color:rgba(43,232,192,.35)}
.stat-num{display:block;font-size:30px;font-weight:800;line-height:1.2;color:var(--mint);letter-spacing:.01em}
.stat h3{margin:6px 0 4px;font-size:15px;font-weight:600;color:var(--t-light)}
.stat p{font-size:13px;color:var(--t-light-dim);line-height:1.7}

/* ===== 通用板块 ===== */
.section{padding:88px 0}
.section-light{background:var(--mist)}
.section-dark{background:var(--ink)}
.sec-head{max-width:760px}
.eyebrow{display:inline-block;margin-bottom:14px;padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--violet);background:var(--violet-soft)}
.eyebrow-light{color:var(--mint);background:rgba(43,232,192,.14)}
.sec-head p{margin-top:12px;font-size:16px;color:var(--t-dark-dim)}
.section-dark .sec-head h2{color:var(--t-light)}
.section-dark .sec-head p{color:var(--t-light-dim)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-dark-dim);margin-bottom:22px}
.crumb a{color:var(--t-dark-dim)}
.crumb a:hover{color:var(--violet)}
.crumb .sep{color:rgba(92,88,120,.5)}
.crumb .now{color:var(--t-dark);font-weight:600}

/* ===== 筛选与时间轴 ===== */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 36px}
.pill{padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--t-dark-dim);font-size:14px;font-weight:500;transition:.18s ease}
.pill:hover{border-color:var(--violet);color:var(--violet)}
.pill.is-active{background:var(--violet);border-color:var(--violet);color:#fff;box-shadow:0 8px 20px rgba(91,46,255,.3)}
.timeline{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.timeline.is-single{grid-template-columns:1fr;max-width:820px}
.tl-col{position:relative;padding-left:30px}
.tl-col::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;border-radius:2px;background:linear-gradient(180deg,rgba(91,46,255,.45),rgba(43,232,192,.4))}
.tl-item{position:relative;margin-bottom:22px}
.tl-item::before{content:"";position:absolute;left:-28px;top:24px;width:12px;height:12px;border-radius:50%;background:var(--violet);box-shadow:0 0 0 4px rgba(91,46,255,.16)}
.tl-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px}
.tl-ver{font-size:13px;font-weight:700;color:var(--violet);letter-spacing:.04em}
.tl-date{margin-left:auto;font-size:13px;color:var(--t-dark-dim)}
.tl-card h3{font-size:17px;margin-bottom:4px}
.tl-list li{position:relative;margin-top:8px;padding-left:16px;font-size:14.5px;line-height:1.8;color:var(--t-dark-dim)}
.tl-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--mint)}
.tl-empty{margin-top:18px;padding:18px 22px;border:1px dashed var(--line);border-radius:var(--r-md);background:#fff;color:var(--t-dark-dim);font-size:14px}

/* ===== 核对更新 ===== */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
.check-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-md);padding:24px;transition:transform .18s ease,border-color .18s ease}
.check-card:hover{transform:translateY(-2px);border-color:rgba(91,46,255,.5)}
.check-num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;margin-bottom:14px;border-radius:10px;background:rgba(91,46,255,.24);color:var(--mint);font-size:15px;font-weight:800}
.check-card h3{color:var(--t-light);font-size:17px;margin-bottom:6px}
.check-card p{font-size:14.5px;line-height:1.8;color:var(--t-light-dim)}
.verify-note{display:grid;grid-template-columns:130px 1fr auto;align-items:center;gap:22px;margin-top:26px;padding:20px 22px;border-radius:var(--r-md);background:rgba(43,232,192,.08);border:1px solid rgba(43,232,192,.3)}
.verify-note img{width:130px;aspect-ratio:16/10;object-fit:cover;border-radius:10px}
.verify-note p{font-size:14.5px;line-height:1.8;color:var(--t-light)}
.verify-note b{color:var(--mint)}

/* ===== FAQ ===== */
.faq{margin-top:32px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--t-dark);transition:background .18s ease}
.faq-q:hover{background:var(--mist)}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--violet);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.faq-icon::before{left:0;right:0;top:7px;height:2px}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{display:none;padding:0 22px 20px;background:var(--mist);color:var(--t-dark-dim);font-size:15px;line-height:1.85}
.faq-a p{padding-top:16px}
.faq-item.open .faq-a{display:block}

/* ===== 收尾 CTA ===== */
.cta-inner{max-width:820px;text-align:center;margin:0 auto}
.cta-inner h2{color:var(--t-light)}
.cta-inner > p{margin-top:14px;font-size:16.5px;color:var(--t-light-dim)}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:30px}
.cta-note{margin-top:20px;font-size:13px;color:rgba(167,159,214,.9)}

/* ===== 页脚 ===== */
.footer{background:var(--ink);color:var(--t-light-dim);padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1.25fr;gap:36px}
.footer-mark{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-mark b{color:var(--t-light);font-size:17px;font-weight:700}
.footer h4{margin-bottom:14px;color:var(--t-light);font-size:14px;font-weight:600}
.footer p{font-size:14px;line-height:1.85}
.footer ul li{margin-bottom:9px}
.footer ul a{font-size:14px;color:var(--t-light-dim);transition:color .18s ease}
.footer ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-chip{display:inline-block;margin-top:14px;padding:5px 12px;border-radius:999px;border:1px solid rgba(43,232,192,.35);color:var(--mint);font-size:12.5px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:12.5px;color:rgba(167,159,214,.85)}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .wrap{padding:0 28px}
  .hero-inner{gap:36px}
}
@media (max-width:1023px){
  :root{--side:0px}
  .sidebar{display:none}
  .page{margin-left:0}
  .wrap{padding:0 24px}
  .topbar{
    display:flex;position:sticky;top:0;z-index:70;height:62px;align-items:center;justify-content:space-between;gap:12px;
    padding:0 16px;background:rgba(13,11,31,.97);border-bottom:1px solid rgba(255,255,255,.1);
  }
  .topbar-right{display:flex;align-items:center;gap:10px}
  .drawer{display:flex;position:fixed;top:0;right:0;bottom:0;z-index:90;width:min(86vw,320px);flex-direction:column;padding:18px 16px;overflow-y:auto;background:var(--ink);transform:translateX(101%);transition:transform .28s ease}
  .drawer-mask{display:block;position:fixed;inset:0;z-index:80;background:rgba(6,5,15,.62);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease}
  body.drawer-open .drawer{transform:translateX(0)}
  body.drawer-open .drawer-mask{opacity:1;visibility:visible}
  .hero{padding:56px 0 52px;min-height:0}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .section{padding:64px 0}
  .stats{padding-bottom:56px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .verify-note{grid-template-columns:110px 1fr;gap:18px}
  .verify-note img{width:110px}
  .verify-note .btn{grid-column:1 / -1;justify-self:start}
}
@media (max-width:767px){
  .timeline{grid-template-columns:1fr;gap:0}
  .timeline.is-single{max-width:none}
  .tl-col:last-child{padding-top:0}
  .check-grid{grid-template-columns:1fr}
  .cta-inner{text-align:left}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:639px){
  .wrap{padding:0 16px}
  .section{padding:52px 0}
  .hero{padding:44px 0 46px}
  .hero-sub{font-size:16px}
  .stat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer{padding:48px 0 24px}
  .faq-q{padding:16px 16px;font-size:15.5px}
  .faq-a{padding:0 16px 18px}
  .verify-note{grid-template-columns:1fr;padding:18px}
  .verify-note img{width:100%;max-width:220px}
  .tl-head .tl-date{margin-left:0}
}

/* roulang page: category4 */
:root{
  --brand:#5B2EFF;
  --brand-soft:rgba(91,46,255,.12);
  --mint:#2BE8C0;
  --pulse:#FF5B2E;
  --ink:#0D0B1F;
  --paper:#F5F3FF;
  --card:#FFFFFF;
  --line:#E4DFFF;
  --t1:#14122B;
  --t2:#5C5878;
  --d1:#F2EEFF;
  --d2:#A79FD6;
  --r:14px;
  --rs:10px;
  --shadow:0 8px 24px rgba(91,46,255,.10);
  --shadow-h:0 16px 34px rgba(91,46,255,.18);
  --rail:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.8;color:var(--t1);background:var(--paper);
  letter-spacing:.02em;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
svg{display:block;}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- 左侧竖向导航 ---------- */
.side-rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail);z-index:70;
  background:var(--ink);border-right:1px solid rgba(255,255,255,.12);
  display:flex;flex-direction:column;padding:24px 16px 20px;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 6px 16px;border-bottom:1px solid rgba(255,255,255,.10);}
.logo-mark{
  width:38px;height:38px;flex:none;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),#7A54FF);
  color:#fff;font-weight:800;font-size:18px;border-radius:11px;
  box-shadow:0 8px 18px rgba(91,46,255,.45);
  clip-path:polygon(0 0,calc(100% - 7px) 0,100% 7px,100% 100%,7px 100%,0 calc(100% - 7px));
}
.brand-txt{display:flex;flex-direction:column;line-height:1.25;}
.brand-txt b{color:#fff;font-size:15px;font-weight:700;}
.brand-txt i{font-style:normal;font-size:11px;color:var(--d2);letter-spacing:.08em;}
.side-nav{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:5px;}
.side-title{font-size:11px;letter-spacing:.2em;color:var(--d2);padding-left:12px;margin-bottom:8px;}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 12px 11px 15px;border-radius:10px;
  color:var(--d2);font-size:14px;font-weight:500;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.side-link svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.side-link:hover{background:rgba(255,255,255,.07);color:#fff;transform:translateX(2px);}
.side-link:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.side-link.active{background:rgba(91,46,255,.20);color:#fff;font-weight:600;}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--mint);
}
.rail-foot{display:flex;flex-direction:column;gap:12px;border-top:1px solid rgba(255,255,255,.10);padding-top:16px;}
.rail-note{font-size:11px;color:var(--d2);line-height:1.7;}
.rail-note b{color:#fff;font-weight:600;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--rs);font-weight:600;font-size:15px;
  transition:filter .18s ease,box-shadow .18s ease,transform .18s ease,background .18s ease;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
}
.btn:focus-visible{outline:2px solid var(--mint);outline-offset:3px;}
.btn-primary{background:var(--pulse);color:#fff;box-shadow:0 10px 22px rgba(255,91,46,.28);}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 14px 30px rgba(255,91,46,.36);}
.btn-primary:active{transform:translateY(1px);}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 10px 22px rgba(91,46,255,.30);}
.btn-brand:hover{filter:brightness(1.08);box-shadow:0 14px 30px rgba(91,46,255,.38);}
.btn-brand:active{transform:translateY(1px);}
.btn-ghost{border:1px solid var(--brand);color:var(--brand);background:transparent;}
.btn-ghost:hover{background:rgba(91,46,255,.08);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 16px;font-size:13px;}
.btn-block{width:100%;}

/* ---------- 主内容区 ---------- */
.page{margin-left:var(--rail);min-height:100vh;display:flex;flex-direction:column;}
.topbar{display:none;}

/* Hero */
.hero{position:relative;background:var(--ink);overflow:hidden;padding:70px 0 62px;color:var(--d1);}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.24;}
.hero-mesh{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:46px 46px;opacity:.55;
}
.hero-scan{position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(43,232,192,.7),transparent);top:38%;}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;
  color:var(--mint);border:1px solid rgba(43,232,192,.4);
  padding:6px 14px;border-radius:999px;background:rgba(43,232,192,.08);
}
.hero h1{font-size:46px;font-weight:800;color:var(--d1);margin:20px 0 18px;line-height:1.22;}
.hero h1 em{font-style:normal;color:var(--mint);}
.hero-sub{font-size:16px;color:var(--d2);max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px;}
.hero-note{font-size:12px;color:var(--d2);display:flex;align-items:center;gap:8px;}
.hero-note span{width:6px;height:6px;border-radius:50%;background:var(--mint);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;border:1px solid rgba(255,255,255,.14);box-shadow:0 24px 50px rgba(0,0,0,.45);}
.hero-badge{
  position:absolute;right:-6px;bottom:-14px;background:var(--brand);color:#fff;
  padding:10px 18px;font-size:13px;font-weight:600;
  clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,9px 100%,0 calc(100% - 9px));
  box-shadow:0 12px 26px rgba(91,46,255,.45);
}
.hero-stats{
  position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:rgba(255,255,255,.12);border-top:1px solid rgba(255,255,255,.12);
  margin-top:54px;border-radius:12px;overflow:hidden;
}
.hero-stats div{background:rgba(255,255,255,.045);padding:18px 20px;}
.hero-stats b{display:block;font-size:22px;color:var(--mint);font-weight:800;letter-spacing:.01em;}
.hero-stats span{font-size:12px;color:var(--d2);}

/* 板块 */
.section{padding:80px 0;}
.section.light{background:var(--paper);}
.section.white{background:#fff;}
.section.dark{background:var(--ink);color:var(--d1);}
.sec-head{max-width:720px;margin-bottom:42px;}
.sec-head .kicker{font-size:12px;letter-spacing:.18em;color:var(--brand);font-weight:700;}
.sec-head h2{font-size:32px;font-weight:700;margin:12px 0 14px;}
.sec-head p{color:var(--t2);font-size:16px;}
.section.dark .sec-head h2{color:var(--d1);}
.section.dark .sec-head p{color:var(--d2);}
.section.dark .sec-head .kicker{color:var(--mint);}

/* 安全提示并列卡 */
.tips-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.tip-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:26px 22px;box-shadow:var(--shadow);
  transition:box-shadow .18s ease,transform .18s ease;
}
.tip-card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px);}
.tip-ico{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:16px;
  clip-path:polygon(0 0,calc(100% - 7px) 0,100% 7px,100% 100%,7px 100%,0 calc(100% - 7px));
}
.tip-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.tip-card h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.tip-card p{font-size:14px;color:var(--t2);}
.tip-tag{display:inline-block;margin-top:14px;font-size:12px;padding:4px 12px;border-radius:999px;background:rgba(43,232,192,.16);color:#0C8C77;font-weight:600;}

/* 风险自检条 */
.check-band{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:26px;box-shadow:var(--shadow);margin-top:34px;
}
.check-item{display:flex;gap:12px;align-items:flex-start;}
.check-dot{
  width:20px;height:20px;flex:none;margin-top:4px;border-radius:6px;
  background:rgba(91,46,255,.12);color:var(--brand);display:grid;place-items:center;font-size:12px;font-weight:700;
}
.check-item p{font-size:14px;color:var(--t2);}
.check-item b{display:block;color:var(--t1);font-size:15px;font-weight:600;margin-bottom:2px;}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:260px 1fr;gap:36px;align-items:start;}
.faq-nav{position:sticky;top:104px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow);}
.faq-nav h3{font-size:14px;font-weight:700;margin-bottom:12px;color:var(--t1);}
.faq-nav a{display:block;font-size:14px;color:var(--t2);padding:9px 12px;border-radius:8px;transition:.18s;}
.faq-nav a:hover{background:rgba(91,46,255,.07);color:var(--brand);}
.faq-nav a:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.faq-group{margin-bottom:38px;}
.faq-group:last-child{margin-bottom:0;}
.faq-gtitle{
  display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;margin-bottom:14px;
}
.faq-gtitle span{
  font-size:12px;font-weight:600;color:var(--brand);background:var(--brand-soft);
  padding:3px 10px;border-radius:999px;
}
.faq{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--t1);
  transition:background .18s ease;
}
.faq-q:hover{background:rgba(91,46,255,.05);}
.faq-q:focus-visible{outline:2px solid var(--mint);outline-offset:-2px;}
.faq-ico{position:relative;width:16px;height:16px;flex:none;}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .25s ease;}
.faq-ico::before{left:0;top:7px;width:16px;height:2px;}
.faq-ico::after{top:0;left:7px;width:2px;height:16px;}
.faq-item.open .faq-ico::after{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 22px 20px;background:rgba(245,243,255,.85);}
.faq-a-inner p{font-size:15px;color:var(--t2);padding-top:16px;}
.faq-a-inner p + p{margin-top:10px;}

/* 表单 */
.form-wrap{display:grid;grid-template-columns:1fr 1.25fr;gap:40px;align-items:start;}
.form-side{color:var(--d2);}
.form-side h2{color:var(--d1);font-size:32px;font-weight:700;margin-bottom:16px;}
.form-side p{font-size:15px;margin-bottom:20px;}
.form-side ul li{display:flex;gap:10px;font-size:14px;margin-bottom:12px;color:var(--d2);}
.form-side ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint);margin-top:11px;flex:none;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:32px;box-shadow:var(--shadow-h);}
.form-row{margin-bottom:20px;}
.form-row label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--t1);}
.form-row label .req{color:var(--pulse);margin-left:4px;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--rs);
  padding:11px 14px;font-size:15px;font-family:inherit;color:var(--t1);background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-row input,.form-row select{height:44px;}
.form-row textarea{min-height:132px;resize:vertical;line-height:1.8;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(91,46,255,.15);
}
.form-row.error input,.form-row.error select,.form-row.error textarea{border-color:#E23D3D;box-shadow:0 0 0 3px rgba(226,61,61,.12);}
.form-hint{font-size:12px;color:var(--t2);margin-top:6px;}
.form-err{font-size:12px;color:#E23D3D;margin-top:6px;display:none;}
.form-row.error .form-err{display:block;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.alert{display:none;padding:14px 16px;border-radius:var(--rs);font-size:14px;margin-bottom:20px;line-height:1.7;}
.alert.ok{display:block;background:rgba(43,232,192,.14);color:#0B7A67;border:1px solid rgba(43,232,192,.4);}
.alert.bad{display:block;background:rgba(226,61,61,.10);color:#B62B2B;border:1px solid rgba(226,61,61,.35);}
.form-foot{font-size:12px;color:var(--t2);margin-top:14px;}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);color:var(--d1);
  border-radius:16px;padding:46px 40px;
  display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(91,46,255,.55),transparent 68%);
}
.cta-band h2{font-size:28px;font-weight:700;color:var(--d1);margin-bottom:12px;}
.cta-band p{color:var(--d2);font-size:15px;}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* 页脚 */
.footer{background:var(--ink);color:var(--d2);padding:62px 0 26px;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;}
.footer-mark{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-mark b{color:#fff;font-size:16px;font-weight:700;}
.footer p{font-size:13px;line-height:1.9;}
.footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer ul li{margin-bottom:9px;}
.footer ul a{font-size:14px;color:var(--d2);transition:color .18s ease,transform .18s ease;display:inline-block;}
.footer ul a:hover{color:#fff;transform:translateX(2px);text-decoration:underline;}
.footer-chip{
  display:inline-block;margin-top:14px;font-size:12px;padding:5px 12px;border-radius:999px;
  background:rgba(43,232,192,.12);color:var(--mint);border:1px solid rgba(43,232,192,.3);
}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--d2);
}

/* 移动端抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:288px;background:var(--ink);z-index:90;
  padding:22px 18px;transform:translateX(104%);transition:transform .26s ease;
  display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,5,15,.6);z-index:80;opacity:0;pointer-events:none;transition:opacity .26s ease;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:14px;}
.drawer-head b{color:#fff;font-size:15px;}
.drawer-close{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:rgba(255,255,255,.08);color:#fff;}
.drawer .side-link{font-size:15px;}

/* 响应式 */
@media (max-width:1279px){
  :root{--rail:220px;}
  .hero h1{font-size:40px;}
  .sec-head h2{font-size:28px;}
}
@media (max-width:1023px){
  .side-rail{display:none;}
  .page{margin-left:0;padding-top:60px;}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:60px;padding:0 16px;z-index:75;
    background:rgba(13,11,31,.96);border-bottom:1px solid rgba(255,255,255,.12);backdrop-filter:blur(8px);
  }
  .topbar .brand{padding:0;border:0;gap:8px;}
  .topbar .brand-txt i{display:none;}
  .topbar-right{display:flex;align-items:center;gap:10px;}
  .burger{width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.08);display:grid;place-items:center;color:#fff;}
  .burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative;}
  .burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;}
  .burger span::before{top:-6px;}
  .burger span::after{top:6px;}
  .hero{padding:54px 0 46px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero h1{font-size:34px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);margin-top:38px;}
  .section{padding:60px 0;}
  .tips-grid{grid-template-columns:repeat(2,1fr);}
  .check-band{grid-template-columns:1fr;}
  .faq-layout{grid-template-columns:1fr;}
  .faq-nav{position:static;}
  .form-wrap{grid-template-columns:1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;padding:36px 26px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  .hero h1{font-size:30px;}
  .hero-actions .btn{flex:1 1 auto;}
  .tips-grid{grid-template-columns:1fr;}
  .sec-head h2{font-size:24px;}
  .form-grid{grid-template-columns:1fr;}
  .faq-q{font-size:15px;padding:16px 18px;}
  .faq-a-inner{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .form-card{padding:24px 20px;}
}
@media (max-width:520px){
  .wrap{padding:0 16px;}
  .hero{padding:44px 0 40px;}
  .hero h1{font-size:27px;}
  .hero-stats{grid-template-columns:1fr;}
  .hero-badge{right:8px;bottom:-12px;}
  .section{padding:48px 0;}
  .footer-bottom{justify-content:flex-start;}
}