/* roulang page: index */
:root{
  --neon:#19F0A5;
  --neon-soft:rgba(25,240,165,.14);
  --neon-line:rgba(25,240,165,.42);
  --amber:#FF7A2F;
  --amber-soft:rgba(255,122,47,.14);
  --bg:#0D0F12;
  --surface:#15181D;
  --surface-2:#1B2027;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#ECEDEF;
  --muted:#9AA1A9;
  --light:#F6F6F3;
  --ink:#15181D;
  --ink-muted:#5C636B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --shadow-card:0 1px 0 rgba(255,255,255,.03) inset,0 20px 44px -28px rgba(0,0,0,.95);
  --shadow-lift:0 1px 0 rgba(255,255,255,.05) inset,0 28px 60px -26px rgba(0,0,0,1);
  --container:1240px;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:4px;}
::selection{background:var(--neon);color:#08110D;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
@media (min-width:1440px){.container{max-width:1320px;}}
.sec{padding:var(--sec-y) 0;position:relative;}
.sec--tight{padding:64px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.sec-head__left{max-width:720px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--neon);font-family:var(--mono);
  margin-bottom:16px;
}
.eyebrow i{width:22px;height:1px;background:var(--neon);display:inline-block;}
h1,h2,h3,h4{font-weight:900;letter-spacing:-.02em;line-height:1.16;}
.sec-title{font-size:clamp(26px,3.4vw,40px);}
.sec-sub{color:var(--muted);font-size:15px;margin-top:14px;max-width:640px;}
.line-title{display:flex;align-items:center;gap:14px;}
.line-title::before{content:"";width:4px;height:26px;border-radius:2px;background:var(--neon);box-shadow:0 0 16px var(--neon-line);}

/* ---------- 顶栏 ---------- */
.notice{
  background:linear-gradient(90deg,rgba(25,240,165,.16),rgba(13,15,18,.2) 62%);
  border-bottom:1px solid var(--line);
  font-size:13px;color:#CDEAE0;height:36px;display:flex;align-items:center;
}
.notice .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.notice__text{display:flex;align-items:center;gap:10px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.notice__tag{color:var(--amber);font-family:var(--mono);font-size:12px;border:1px solid var(--amber);border-radius:999px;padding:1px 8px;}
.notice__close{background:none;border:0;color:var(--muted);cursor:pointer;font-size:15px;line-height:1;padding:4px;}
.notice__close:hover{color:var(--neon);}

.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(13,15,18,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 18px 40px -34px rgba(0,0,0,1);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:19px;letter-spacing:-.02em;}
.logo__mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--neon),#0BB37A);
  color:#07130D;font-family:var(--mono);font-size:13px;font-weight:700;
  box-shadow:0 0 22px rgba(25,240,165,.35);
}
.logo__text small{display:block;font-size:11px;font-weight:400;color:var(--muted);letter-spacing:.14em;font-family:var(--mono);}
.nav__menu{display:flex;align-items:center;gap:6px;}
.nav__menu a{
  position:relative;display:block;padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;color:#C6CBCF;transition:color .18s ease,transform .18s ease;
}
.nav__menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--neon);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;box-shadow:0 0 12px var(--neon-line);
}
.nav__menu a:hover{color:#fff;transform:translateY(-1px);}
.nav__menu a:hover::after{transform:scaleX(1);}
.nav__menu a.is-active{color:#fff;font-weight:700;}
.nav__menu a.is-active::after{transform:scaleX(1);}
.nav__right{display:flex;align-items:center;gap:14px;}
.nav__toggle{
  display:none;background:none;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  width:42px;height:38px;cursor:pointer;position:relative;
}
.nav__toggle span{
  position:absolute;left:11px;right:11px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .25s ease,opacity .2s ease,top .25s ease;
}
.nav__toggle span:nth-child(1){top:13px;}
.nav__toggle span:nth-child(2){top:19px;}
.nav__toggle span:nth-child(3){top:25px;}
.nav__toggle.is-open span:nth-child(1){top:19px;transform:rotate(45deg);}
.nav__toggle.is-open span:nth-child(2){opacity:0;}
.nav__toggle.is-open span:nth-child(3){top:19px;transform:rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--neon);color:#07130D;box-shadow:0 0 0 1px rgba(25,240,165,.5),0 14px 32px -18px rgba(25,240,165,.85);}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,240,165,.7),0 20px 40px -16px rgba(25,240,165,.9);}
.btn--ghost{background:transparent;color:var(--neon);border-color:var(--neon-line);}
.btn--ghost:hover{transform:translateY(-2px);background:var(--neon-soft);box-shadow:0 0 24px -6px rgba(25,240,165,.45);}
.btn--amber{background:var(--amber);color:#1A0C04;box-shadow:0 14px 32px -18px rgba(255,122,47,.9);}
.btn--amber:hover{transform:translateY(-2px);}
.btn--sm{height:36px;padding:0 16px;font-size:13px;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none;}

.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--neon);font-size:14px;font-weight:600;
}
.link-more i{transition:transform .2s ease;}
.link-more:hover i{transform:translateX(4px);}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;padding:3px 10px;border-radius:999px;
  border:1px solid var(--line-strong);color:#C8CED3;background:rgba(255,255,255,.03);
  font-family:var(--mono);letter-spacing:.04em;
}
.badge--neon{border-color:var(--neon-line);color:var(--neon);background:var(--neon-soft);}
.badge--amber{border-color:var(--amber);color:#1A0C04;background:var(--amber);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:84px 0 0;border-bottom:1px solid var(--line);}
.hero__bg{
  position:absolute;inset:-6%;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.42;filter:saturate(.85) contrast(1.05);
  animation:heroDrift 26s linear infinite alternate;
}
@keyframes heroDrift{
  0%{transform:scale(1.06) translate3d(-1%,0,0);}
  100%{transform:scale(1.16) translate3d(2%,-1.5%,0);}
}
.hero__veil{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 78% 12%,rgba(25,240,165,.16),transparent 58%),
    linear-gradient(100deg,rgba(13,15,18,.97) 12%,rgba(13,15,18,.78) 48%,rgba(13,15,18,.38) 100%),
    linear-gradient(0deg,rgba(13,15,18,1) 2%,rgba(13,15,18,0) 46%);
}
.hero__inner{position:relative;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center;padding-bottom:56px;}
.hero h1{font-size:clamp(32px,4.6vw,58px);margin:18px 0 16px;}
.hero h1 em{font-style:normal;color:var(--neon);text-shadow:0 0 28px rgba(25,240,165,.4);}
.hero__sub{color:#C3C9CE;font-size:17px;max-width:520px;}
.hero__cta{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
.hero__points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;}
.hero__points li{font-size:13.5px;color:var(--muted);display:flex;align-items:center;gap:8px;}
.hero__points i{color:var(--neon);font-size:12px;}
.hero__panel{
  border:1px solid var(--line);border-radius:var(--r-lg);background:rgba(21,24,29,.86);
  box-shadow:var(--shadow-lift);overflow:hidden;backdrop-filter:blur(6px);
}
.hero__panel img{height:210px;width:100%;object-fit:cover;opacity:.9;}
.hero__panel-body{padding:22px 24px 26px;}
.hero__panel-body h3{font-size:17px;margin-bottom:6px;}
.hero__panel-body p{color:var(--muted);font-size:13.5px;}
.panel-rows{margin-top:18px;border-top:1px solid var(--line);}
.panel-rows li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;border-bottom:1px solid var(--line);font-size:13.5px;color:#C6CBCF;
}
.panel-rows li span:last-child{font-family:var(--mono);color:var(--neon);}

.stats{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-lg) var(--r-lg) 0 0;
  background:rgba(21,24,29,.9);overflow:hidden;
}
.stats li{padding:26px 28px;border-right:1px solid var(--line);}
.stats li:last-child{border-right:0;}
.stats b{display:block;font-family:var(--mono);font-size:30px;font-weight:700;color:var(--neon);letter-spacing:-.02em;}
.stats span{display:block;margin-top:6px;font-size:13px;color:var(--muted);}

/* ---------- 能力卡 ---------- */
.grid{display:grid;gap:24px;}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.card{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);
  box-shadow:var(--shadow-card);padding:28px 26px;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--neon-line);box-shadow:var(--shadow-lift);}
.card__icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--neon-soft);border:1px solid var(--neon-line);color:var(--neon);font-size:18px;
  margin-bottom:20px;
}
.card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.card p{color:var(--muted);font-size:14.5px;}
.card ul{margin-top:16px;display:grid;gap:8px;}
.card ul li{font-size:13.5px;color:#B7BDC3;display:flex;gap:8px;align-items:flex-start;}
.card ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--neon);margin-top:8px;flex:0 0 6px;}

/* ---------- 阶梯 ---------- */
.tiers{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;align-items:end;}
.tier{
  position:relative;border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  padding:26px 24px;box-shadow:var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease;
}
.tier:hover{transform:translateY(-6px);border-color:var(--neon-line);}
.tier:nth-child(1){min-height:300px;}
.tier:nth-child(2){min-height:346px;}
.tier:nth-child(3){min-height:392px;border-color:var(--neon-line);}
.tier:nth-child(4){min-height:438px;border-color:rgba(255,122,47,.5);}
.tier__no{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--muted);
}
.tier__name{font-size:20px;font-weight:900;margin:10px 0 6px;}
.tier__gate{font-size:13px;color:var(--neon);font-family:var(--mono);}
.tier ul{margin-top:20px;border-top:1px solid var(--line);padding-top:16px;display:grid;gap:10px;}
.tier ul li{font-size:13.5px;color:#B7BDC3;display:flex;gap:9px;}
.tier ul li i{color:var(--neon);font-size:11px;margin-top:6px;}
.tier__cta{display:inline-flex;align-items:center;gap:6px;margin-top:22px;font-size:13.5px;color:var(--neon);font-weight:600;}
.tier__cta:hover{gap:12px;}

/* ---------- 对比矩阵 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--surface);
  box-shadow:var(--shadow-card);
}
table.matrix{width:100%;border-collapse:collapse;min-width:760px;}
.matrix th,.matrix td{
  padding:18px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--line);
}
.matrix thead th{
  background:#111418;font-family:var(--mono);font-size:12.5px;letter-spacing:.1em;
  color:var(--muted);text-transform:uppercase;font-weight:500;
}
.matrix tbody th{font-weight:600;color:#DDE1E4;background:#12161A;}
.matrix td{color:#B7BDC3;}
.matrix tbody tr:last-child th,.matrix tbody tr:last-child td{border-bottom:0;}
.matrix .col-rec{
  background:rgba(25,240,165,.06);color:#EAF6F1;position:relative;
  border-left:1px solid var(--neon-line);border-right:1px solid var(--neon-line);
}
.matrix thead .col-rec{color:var(--neon);font-weight:700;}
.matrix .col-alt{opacity:.72;}
.matrix .rec-tag{
  display:inline-block;margin-left:8px;font-size:11px;padding:1px 7px;border-radius:999px;
  background:var(--amber);color:#1A0C04;font-family:var(--mono);letter-spacing:0;
}
.matrix .yes{color:var(--neon);}
.matrix .no{color:#5B6167;}
.scroll-x{overflow-x:auto;}

/* ---------- 限时 ---------- */
.flash{
  position:relative;overflow:hidden;
  border:1px solid var(--neon-line);border-radius:var(--r-lg);
  background:
    radial-gradient(80% 140% at 12% 0%,rgba(25,240,165,.14),transparent 62%),
    linear-gradient(120deg,#14181D,#101317);
  padding:40px 42px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;
  box-shadow:var(--shadow-lift);
}
.flash::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(90deg,rgba(255,255,255,.028) 0 1px,transparent 1px 46px);
}
.flash__col{position:relative;z-index:1;}
.flash h2{font-size:clamp(22px,2.6vw,32px);}
.flash p{color:var(--muted);font-size:14.5px;margin-top:10px;max-width:520px;}
.countdown{display:flex;gap:12px;margin-top:22px;}
.countdown div{
  min-width:74px;text-align:center;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  padding:10px 8px;background:rgba(13,15,18,.72);
}
.countdown b{display:block;font-family:var(--mono);font-size:24px;color:var(--neon);letter-spacing:-.02em;}
.countdown span{display:block;font-size:11px;color:var(--muted);margin-top:2px;letter-spacing:.12em;}
.flash__cta{display:flex;flex-direction:column;gap:14px;align-items:flex-end;position:relative;z-index:1;}
.flash__badges{display:flex;gap:10px;margin-top:26px;flex-wrap:wrap;}

/* ---------- 表单 ---------- */
.contact{background:var(--light);color:var(--ink);border-radius:var(--r-lg);overflow:hidden;}
.contact__inner{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:0;}
.contact__aside{padding:56px 48px;background:linear-gradient(160deg,#0F1216,#15181D);color:var(--text);}
.contact__aside h2{font-size:clamp(24px,2.8vw,34px);color:#fff;}
.contact__aside p{color:var(--muted);font-size:14.5px;margin-top:14px;}
.contact__aside ul{margin-top:28px;display:grid;gap:16px;}
.contact__aside li{display:flex;gap:12px;font-size:14px;color:#C6CBCF;align-items:flex-start;}
.contact__aside li i{color:var(--neon);margin-top:5px;}
.contact__form{padding:56px 48px;background:var(--light);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:700;color:var(--ink);margin-bottom:8px;letter-spacing:.02em;}
.field input,.field select,.field textarea{
  width:100%;background:#EDEDE8;border:1px solid rgba(21,24,29,.14);border-radius:var(--r-sm);
  padding:12px 14px;font-size:14.5px;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:112px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--neon);
  box-shadow:0 0 0 3px rgba(25,240,165,.22);
}
.field__hint{font-size:12px;color:var(--ink-muted);margin-top:10px;}
.form-msg{margin-top:14px;font-size:13px;color:#0E8A5F;display:none;}
.form-msg.is-on{display:block;}

/* ---------- 资讯列表 ---------- */
.posts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post{
  display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.post:hover{transform:translateY(-4px);border-color:var(--neon-line);box-shadow:var(--shadow-lift);}
.post__thumb{position:relative;height:184px;overflow:hidden;background:#0F1216;}
.post__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.3,1);opacity:.92;}
.post:hover .post__thumb img{transform:scale(1.06);}
.post__thumb .badge{position:absolute;left:14px;top:14px;background:rgba(13,15,18,.82);backdrop-filter:blur(4px);}
.post__body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.post__title{font-size:16.5px;font-weight:700;line-height:1.5;letter-spacing:-.01em;}
.post__title a:hover{color:var(--neon);}
.post__desc{color:var(--muted);font-size:13.5px;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post__meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.04em;
}
.post__meta .go{color:var(--neon);}
.post-empty{
  grid-column:1/-1;border:1px dashed var(--line-strong);border-radius:var(--r-md);
  padding:56px 24px;text-align:center;color:var(--muted);background:rgba(21,24,29,.6);
}
.post-empty i{font-size:26px;color:var(--neon);display:block;margin-bottom:14px;}
.post-empty a{color:var(--neon);font-weight:600;}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);}
.faq__item{border-bottom:1px solid var(--line);}
.faq__q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 0 16px 18px;position:relative;
  font-size:16.5px;font-weight:700;color:var(--text);
}
.faq__q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;
  background:var(--neon);transform:scaleY(0);transform-origin:top;transition:transform .2s ease;
  box-shadow:0 0 12px var(--neon-line);
}
.faq__item.is-open .faq__q::before{transform:scaleY(1);}
.faq__q i{color:var(--muted);transition:transform .2s ease,color .2s ease;font-size:14px;}
.faq__item.is-open .faq__q i{transform:rotate(90deg);color:var(--neon);}
.faq__a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq__a p{padding:0 0 22px 18px;color:var(--muted);font-size:14.5px;max-width:860px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  border:1px solid var(--line);border-radius:var(--r-lg);padding:40px 42px;
  background:linear-gradient(120deg,#12161A,#171B21 60%,#101316);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);}
.cta-band p{color:var(--muted);font-size:14.5px;margin-top:8px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sec-y);border-top:1px solid var(--neon-line);
  background:#0A0C0F;padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:48px;}
.site-footer h4{font-size:14px;letter-spacing:.1em;color:#fff;margin-bottom:18px;font-family:var(--mono);font-weight:500;}
.site-footer p{color:var(--muted);font-size:13.5px;}
.site-footer li{margin-bottom:10px;}
.site-footer li a{color:#A9B0B6;font-size:14px;display:inline-block;}
.site-footer li a:hover{color:var(--neon);transform:translateX(2px);}
.footer-brand .logo{margin-bottom:16px;}
.footer-contact li{color:#A9B0B6;font-size:14px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#6E757C;
  font-family:var(--mono);
}
.footer-bottom a{color:#8A9198;}
.footer-bottom a:hover{color:var(--neon);}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease;}
.reveal.is-in{opacity:1;transform:none;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-y:80px;}
  .hero__inner{grid-template-columns:1fr;gap:40px;}
  .tiers{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;}
  .tier{min-height:auto!important;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav__menu{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(13,15,18,.98);border-bottom:1px solid var(--line);
    padding:14px 24px 22px;display:none;
  }
  .nav__menu.is-open{display:flex;}
  .nav__menu a{padding:13px 10px;font-size:15.5px;border-radius:var(--r-sm);}
  .nav__menu a::after{left:10px;right:auto;width:22px;}
  .nav__toggle{display:block;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stats li:nth-child(2){border-right:0;}
  .stats li:nth-child(1),.stats li:nth-child(2){border-bottom:1px solid var(--line);}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--3,.posts{grid-template-columns:repeat(2,minmax(0,1fr));}
  .contact__inner{grid-template-columns:1fr;}
  .flash{grid-template-columns:1fr;padding:32px 26px;}
  .flash__cta{align-items:flex-start;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
  .sec-head{margin-bottom:32px;}
}
@media (max-width:767px){
  :root{--sec-y:64px;}
  .hero{padding-top:56px;}
  .hero__points{gap:8px 16px;}
  .grid--4,.grid--3,.grid--2,.posts{grid-template-columns:1fr;}
  .tiers{grid-template-columns:1fr;}
  .contact__aside,.contact__form{padding:36px 24px;}
  .cta-band{padding:30px 24px;}
  .flash h2{font-size:22px;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .stats{grid-template-columns:1fr;}
  .stats li{border-right:0;border-bottom:1px solid var(--line);}
  .stats li:last-child{border-bottom:0;}
  .countdown div{min-width:62px;}
  .countdown b{font-size:19px;}
  .hero__cta .btn{width:100%;}
  .notice__text{font-size:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{font-size:12px;}
}

/* roulang page: article */
:root{
  --neon:#19F0A5;
  --neon-dim:rgba(25,240,165,.45);
  --neon-soft:rgba(25,240,165,.12);
  --amber:#FF7A2F;
  --bg:#0D0F12;
  --surface:#15181D;
  --surface-2:#1B1F25;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --paper:#F6F6F3;
  --paper-2:#E9E9E3;
  --ink:#ECEDEF;
  --ink-2:#9AA1A9;
  --ink-dark:#15181D;
  --ink-dark-2:#5C636B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --sh-card:0 1px 0 rgba(255,255,255,.04),0 18px 40px -26px rgba(0,0,0,.95);
  --sh-lift:0 26px 56px -30px rgba(0,0,0,.95);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.25;color:inherit}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px}
.container{width:min(1240px,100% - 40px);margin-inline:auto}
@media (min-width:768px){.container{width:min(1240px,100% - 80px)}}
@media (min-width:1440px){.container{width:min(1320px,100% - 120px)}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(13,15,18,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,240,165,.55),transparent);
}
.nav{display:flex;align-items:center;gap:26px;height:74px}
.logo{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.logo__mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#19F0A5,#0FB985);
  color:#06231A;font-weight:900;font-size:14px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(25,240,165,.35),0 10px 24px -12px rgba(25,240,165,.8);
}
.logo__text{display:flex;flex-direction:column;font-size:17px;font-weight:800;letter-spacing:-.01em;line-height:1.15}
.logo__text small{font-family:var(--mono);font-size:10px;font-weight:400;letter-spacing:.18em;color:var(--ink-2);margin-top:3px}
.nav__menu{display:flex;align-items:center;gap:2px;margin-left:14px}
.nav__menu a{
  position:relative;display:inline-block;padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;color:var(--ink-2);transition:color .18s,transform .18s;
}
.nav__menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
  box-shadow:0 0 12px rgba(25,240,165,.9);
}
.nav__menu a:hover{color:#fff;transform:translateY(-1px)}
.nav__menu a:hover::after{transform:scaleX(1)}
.nav__menu a.is-active{color:#fff;font-weight:700}
.nav__menu a.is-active::after{transform:scaleX(1)}
.nav__right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav__toggle{display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:10px;padding:11px 10px}
.nav__toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .2s}
.nav__toggle span+span{margin-top:5px}
.nav__toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle.is-open span:nth-child(2){opacity:0}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s,box-shadow .25s,background .2s,color .2s,border-color .2s;
}
.btn--primary{background:var(--neon);color:#06231A}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px var(--neon),0 14px 32px -12px rgba(25,240,165,.75)}
.btn--ghost{border-color:var(--line-strong);color:var(--ink);background:rgba(255,255,255,.02)}
.btn--ghost:hover{transform:translateY(-2px);border-color:var(--neon);color:var(--neon);box-shadow:0 12px 30px -16px rgba(25,240,165,.6)}
.btn--sm{height:36px;padding:0 16px;font-size:14px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 11px;
  border-radius:999px;border:1px solid var(--line-strong);
  font-size:12px;letter-spacing:.04em;color:var(--ink-2);white-space:nowrap;
}
.badge--neon{border-color:var(--neon-dim);background:var(--neon-soft);color:var(--neon)}
.badge--amber{border-color:rgba(255,122,47,.5);background:rgba(255,122,47,.14);color:var(--amber)}

/* ---------- banner ---------- */
.page-banner{
  position:relative;padding:34px 0 46px;
  background-image:linear-gradient(180deg,rgba(13,15,18,.88),rgba(13,15,18,.97)),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.breadcrumb a{transition:color .18s}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .current{color:rgba(236,237,239,.85)}

/* ---------- layout ---------- */
.section{padding:var(--sec) 0}
.article-section{padding:56px 0 var(--sec)}
.article-shell{display:grid;grid-template-columns:250px minmax(0,1fr);gap:46px;align-items:start}
@media (max-width:1199px){.article-shell{grid-template-columns:minmax(0,1fr);gap:26px}}

/* ---------- toc ---------- */
.toc{
  position:sticky;top:100px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 16px;box-shadow:var(--sh-card);
}
.toc h2{font-size:12px;letter-spacing:.2em;color:var(--ink-2);font-weight:600;margin-bottom:12px}
.toc__list a{
  display:block;padding:9px 10px;margin-bottom:2px;border-radius:6px;
  border-left:2px solid transparent;
  font-size:14px;line-height:1.5;color:var(--ink-2);
  transition:color .18s,transform .18s,background .18s,border-color .18s;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.toc__list a:hover{color:var(--neon);transform:translateX(2px);background:rgba(255,255,255,.03);border-left-color:var(--neon)}
.toc-mobile{display:none}
@media (max-width:1199px){
  .toc{display:none}
  .toc-mobile{
    display:block;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-md);overflow:hidden;
  }
  .toc-mobile summary{
    list-style:none;cursor:pointer;padding:16px 18px;font-size:14px;font-weight:700;
    display:flex;align-items:center;justify-content:space-between;
  }
  .toc-mobile summary::-webkit-details-marker{display:none}
  .toc-mobile summary::after{content:"展开";font-size:12px;font-weight:400;color:var(--ink-2)}
  .toc-mobile[open] summary::after{content:"收起"}
  .toc-mobile .toc__list{padding:0 10px 14px}
}

/* ---------- reader ---------- */
.reader-surface{
  background:var(--paper);color:var(--ink-dark);
  border-radius:var(--r-lg);
  padding:clamp(24px,4vw,56px);
  box-shadow:0 40px 80px -50px rgba(0,0,0,.95),0 0 0 1px rgba(255,255,255,.06);
}
.article-head{border-bottom:1px solid #D9D9D2;padding-bottom:26px;margin-bottom:32px}
.article-head h1{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:900;letter-spacing:-.02em;color:var(--ink-dark);
  margin:16px 0 18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--ink-dark-2)}
.article-meta .num{font-family:var(--mono);letter-spacing:.02em}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C6C6BE}

.article-content{max-width:820px}
.article-content>*:first-child{margin-top:0}
.article-content p{font-size:17px;line-height:1.9;color:#23272E;margin:0 0 1.4em}
.article-content h2{
  position:relative;font-size:clamp(20px,2.4vw,26px);font-weight:800;color:var(--ink-dark);
  margin:2em 0 .7em;padding-left:15px;scroll-margin-top:104px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  border-radius:3px;background:var(--neon);box-shadow:0 0 12px rgba(25,240,165,.5);
}
.article-content h3{font-size:19px;font-weight:800;color:#101216;margin:1.7em 0 .6em}
.article-content h4{font-size:17px;font-weight:700;color:#101216;margin:1.5em 0 .5em}
.article-content a{color:#0B7753;border-bottom:1px solid rgba(11,119,83,.35);transition:color .18s,border-color .18s}
.article-content a:hover{color:#07573C;border-bottom-color:#07573C}
.article-content ul,.article-content ol{margin:0 0 1.5em;padding-left:1.5em}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{font-size:17px;line-height:1.85;color:#23272E;margin-bottom:.5em}
.article-content li::marker{color:#0B7753}
.article-content blockquote{
  margin:0 0 1.6em;padding:16px 22px;border-left:3px solid var(--neon);
  background:#EDEDE7;border-radius:0 10px 10px 0;color:#33383F;font-size:16px;line-height:1.85;
}
.article-content blockquote p{margin:0;font-size:16px}
.article-content img{border-radius:14px;margin:26px 0 10px;box-shadow:0 18px 40px -28px rgba(0,0,0,.6)}
.article-content figure{margin:26px 0}
.article-content figcaption{font-size:13px;color:var(--ink-dark-2);margin-top:10px;text-align:center}
.article-content table{width:100%;margin:0 0 1.7em;font-size:15px;background:#fff;border-radius:12px;overflow:hidden}
.article-content th{background:#15181D;color:#ECEDEF;font-weight:700;text-align:left}
.article-content th,.article-content td{border:1px solid #D8D8D1;padding:11px 14px;line-height:1.6}
.article-content tr:nth-child(even) td{background:#F2F2ED}
.article-content hr{border:0;border-top:1px solid #D9D9D2;margin:2.4em 0}
.article-content code{
  font-family:var(--mono);font-size:14px;background:#E9E9E3;border-radius:6px;padding:2px 6px;
}
.article-content pre{
  background:#15181D;color:#E7E9EC;border-radius:14px;padding:18px 20px;overflow:auto;margin:0 0 1.6em;
}
.article-content pre code{background:none;color:inherit;padding:0}

/* ---------- empty state ---------- */
.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed #CFCFC7;border-radius:var(--r-md);background:#F1F1EB;
}
.empty-state__icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:14px;
  display:grid;place-items:center;background:#15181D;color:var(--neon);
  font-family:var(--mono);font-size:22px;font-weight:700;
}
.empty-state h2{font-size:20px;margin-bottom:10px;color:var(--ink-dark)}
.empty-state p{font-size:15px;color:var(--ink-dark-2);margin-bottom:22px}

/* ---------- article actions ---------- */
.article-actions{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  margin-top:44px;padding-top:26px;border-top:1px solid #D9D9D2;
}
.article-actions .btn--ghost{border-color:#C9C9C1;color:var(--ink-dark)}
.article-actions .btn--ghost:hover{border-color:#0B7753;color:#0B7753;box-shadow:none}
.article-actions .btn--primary{background:#15181D;color:#ECEDEF}
.article-actions .btn--primary:hover{box-shadow:0 0 0 1px #15181D,0 14px 30px -16px rgba(0,0,0,.6)}

/* ---------- related ---------- */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;margin-bottom:34px}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:900}
.section-head p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:640px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:1023px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:639px){.grid-3{grid-template-columns:minmax(0,1fr)}}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-card);
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.card:hover{transform:translateY(-4px);border-color:var(--neon-dim);box-shadow:var(--sh-lift)}
.card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0A0C0F}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.3,1)}
.card:hover .card__media img{transform:scale(1.06)}
.card__media .badge{position:absolute;left:14px;top:14px;background:rgba(13,15,18,.78);backdrop-filter:blur(6px)}
.card__body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__title{font-size:17px;font-weight:800;line-height:1.5}
.card__desc{font-size:14px;line-height:1.75;color:var(--ink-2)}
.card__meta{margin-top:auto;padding-top:12px;font-size:12px;color:var(--ink-2);font-family:var(--mono);display:flex;align-items:center;gap:10px}
.card__meta::before{content:"";width:16px;height:1px;background:var(--neon);display:block}

/* ---------- cta band ---------- */
.cta-band{padding:0 0 var(--sec)}
.cta-band__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  padding:34px 38px;border-radius:var(--r-lg);
  border:1px solid rgba(25,240,165,.28);
  background:linear-gradient(120deg,rgba(25,240,165,.10),rgba(21,24,29,.9) 55%),var(--surface);
  box-shadow:var(--sh-card);
}
.cta-band__inner h2{font-size:clamp(20px,2.6vw,28px);font-weight:900}
.cta-band__inner p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:560px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  background:#0A0C0F;border-top:1px solid var(--line);position:relative;
  padding:64px 0 26px;color:var(--ink-2);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,240,165,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
@media (max-width:1023px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}}
@media (max-width:639px){.footer-grid{grid-template-columns:minmax(0,1fr)}}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;max-width:320px}
.site-footer h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.site-footer ul li{margin-bottom:10px;font-size:14px}
.site-footer ul li a{transition:color .18s,transform .18s;display:inline-block}
.site-footer ul li a:hover{color:var(--neon);transform:translateX(2px)}
.footer-contact li{line-height:1.7}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(154,161,169,.85);
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:70;
  width:46px;height:46px;border-radius:12px;
  background:rgba(21,24,29,.94);border:1px solid var(--line-strong);color:var(--neon);
  display:grid;place-items:center;font-size:16px;font-weight:700;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s,transform .25s,visibility .25s,border-color .25s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--neon);box-shadow:0 0 18px -4px rgba(25,240,165,.7)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1023px){
  :root{--sec:64px}
  .nav__menu{
    position:fixed;left:0;right:0;top:74px;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;
    background:rgba(11,13,16,.98);border-bottom:1px solid var(--line);
    padding:14px 20px 20px;
    transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
    transition:transform .25s,opacity .25s,visibility .25s;
  }
  .nav__menu.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto}
  .nav__menu a{padding:13px 12px;font-size:15px;border-bottom:1px solid var(--line)}
  .nav__menu a::after{display:none}
  .nav__menu a.is-active{color:var(--neon)}
  .nav__toggle{display:block}
  .nav__right .btn{display:none}
}
@media (max-width:639px){
  :root{--sec:40px}
  .article-section{padding:34px 0 var(--sec)}
  .reader-surface{border-radius:var(--r-md)}
  .article-actions{flex-direction:column;align-items:stretch}
  .article-actions .btn{width:100%}
  .cta-band__inner{padding:26px 22px}
  .cta-band__actions .btn{flex:1 1 auto}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#0D0F12;
  --surface:#15181D;
  --surface-2:#1B1F26;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#19F0A5;
  --neon-deep:#0C8F63;
  --neon-glow:rgba(25,240,165,.35);
  --amber:#FF7A2F;
  --text:#ECEDEF;
  --muted:#9AA1A9;
  --light:#F6F6F3;
  --ink:#15181D;
  --ink-muted:#5C636B;
  --radius-s:8px;
  --radius-m:14px;
  --radius-l:22px;
  --shadow-1:0 1px 2px rgba(0,0,0,.5), 0 18px 40px rgba(0,0,0,.45);
  --shadow-2:0 1px 0 rgba(255,255,255,.04) inset, 0 24px 60px rgba(0,0,0,.55);
  --container:1240px;
  --gap-section:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Roboto Mono","Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease, opacity .18s ease;}
img{max-width:100%;display:block;height:auto;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;}
::selection{background:rgba(25,240,165,.28);color:#fff;}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}
.section{padding:var(--gap-section) 0;}
.section--tight{padding:64px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,3vw,38px);
  line-height:1.2;
  font-weight:900;
  letter-spacing:-.02em;
}
.section-head p{
  color:var(--muted);
  font-size:15px;
  max-width:620px;
  margin-top:10px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--neon);
  font-family:var(--font-mono);
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--neon);
  box-shadow:0 0 10px var(--neon-glow);
}
.divider{
  height:1px;
  background:linear-gradient(90deg,rgba(25,240,165,.5),rgba(255,255,255,.05) 45%,transparent);
  border:0;
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-s);
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
  white-space:nowrap;
}
.btn--sm{height:36px;padding:0 16px;font-size:14px;}
.btn--primary{
  background:var(--neon);
  color:#06231A;
  box-shadow:0 8px 24px rgba(25,240,165,.18);
}
.btn--primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(25,240,165,.34);
  color:#06231A;
}
.btn--ghost{
  background:transparent;
  border-color:rgba(25,240,165,.55);
  color:var(--neon);
}
.btn--ghost:hover{
  transform:translateY(-2px);
  border-color:var(--neon);
  box-shadow:0 10px 26px rgba(25,240,165,.16);
  color:var(--neon);
}
.btn--amber{
  background:var(--amber);
  color:#2A0F03;
}
.btn--amber:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,122,47,.3);color:#2A0F03;}
.btn:active{transform:translateY(0) scale(.99);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--neon);
  font-size:14px;
  font-weight:600;
}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover::after{transform:translateX(4px);}

/* 徽章 */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  border:1px solid rgba(25,240,165,.4);
  color:var(--neon);
  background:rgba(25,240,165,.07);
  white-space:nowrap;
}
.badge--amber{border-color:rgba(255,122,47,.55);background:rgba(255,122,47,.14);color:#FFB185;}
.badge--muted{border-color:var(--line-strong);background:rgba(255,255,255,.04);color:var(--muted);}
.badge--ink{border-color:rgba(21,24,29,.18);background:rgba(21,24,29,.05);color:var(--ink-muted);}

/* 公告条 */
.notice-bar{
  background:#0A0C0F;
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.notice-bar__inner{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:36px;
  padding-top:6px;
  padding-bottom:6px;
}
.notice-bar__dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--neon);
  box-shadow:0 0 10px var(--neon);
  flex:none;
}
.notice-bar p{flex:1;line-height:1.5;}
.notice-bar__close{
  background:transparent;border:0;color:var(--muted);
  font-size:18px;line-height:1;padding:4px 6px;border-radius:6px;
  transition:color .18s ease, background .18s ease;
}
.notice-bar__close:hover{color:var(--text);background:rgba(255,255,255,.06);}

/* 头部与导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(11,13,16,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:74px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:none;
}
.logo__mark{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(150deg,rgba(25,240,165,.92),rgba(12,143,99,.85));
  color:#06231A;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:15px;
  letter-spacing:.04em;
  box-shadow:0 6px 20px rgba(25,240,165,.22);
}
.logo__text{
  display:flex;
  flex-direction:column;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.2;
}
.logo__text small{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  color:var(--muted);
  font-weight:400;
  margin-top:3px;
}
.nav__menu{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav__menu a{
  position:relative;
  padding:10px 14px;
  border-radius:var(--radius-s);
  font-size:15px;
  color:var(--muted);
  font-weight:500;
  transition:color .18s ease, transform .12s ease, background .18s ease;
}
.nav__menu a:hover{
  color:var(--text);
  transform:translateY(-1px);
  background:rgba(255,255,255,.04);
}
.nav__menu a.is-active{color:#fff;font-weight:800;}
.nav__menu a.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 12px var(--neon-glow);
}
.nav__right{display:flex;align-items:center;gap:12px;flex:none;}
.nav__toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--radius-s);
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav__toggle span{
  display:block;width:20px;height:2px;border-radius:2px;
  background:var(--text);
  transition:transform .22s ease, opacity .22s ease;
}
.nav__toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav__toggle.is-open span:nth-child(2){opacity:0;}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 首屏 */
.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero__bg{
  position:absolute;
  inset:-4% -4% -4% -4%;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.34;
  animation:heroDrift 26s linear infinite alternate;
}
@keyframes heroDrift{
  from{transform:scale(1.04) translate3d(0,0,0);}
  to{transform:scale(1.14) translate3d(-2%,-1.5%,0);}
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(13,15,18,.97) 0%,rgba(13,15,18,.86) 46%,rgba(13,15,18,.62) 100%),
    linear-gradient(0deg,rgba(13,15,18,.98) 0%,rgba(13,15,18,.2) 60%,rgba(13,15,18,.75) 100%);
  z-index:1;
}
.hero__inner{
  position:relative;
  z-index:2;
  padding:64px 40px 72px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:26px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb span[aria-current]{color:var(--text);}
.breadcrumb .sep{color:rgba(255,255,255,.22);}
.hero h1{
  font-size:clamp(30px,4.6vw,56px);
  line-height:1.12;
  font-weight:900;
  letter-spacing:-.02em;
  max-width:900px;
  margin-bottom:18px;
}
.hero__sub{
  font-size:17px;
  color:#C3C9D0;
  max-width:640px;
}
.hero__actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  margin-top:32px;
}
.stat-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  margin-top:48px;
  padding-top:28px;
  border-top:1px solid var(--line);
  max-width:760px;
}
.stat-row li{display:flex;flex-direction:column;gap:6px;}
.stat-row strong{
  font-family:var(--font-mono);
  font-size:clamp(22px,3vw,32px);
  font-weight:700;
  color:#fff;
  letter-spacing:-.02em;
  line-height:1;
}
.stat-row span{font-size:13px;color:var(--muted);}

/* 速览小卡 */
.mini-card{
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:26px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.mini-card:hover{
  transform:translateY(-4px);
  border-color:rgba(25,240,165,.45);
  box-shadow:0 20px 44px rgba(0,0,0,.5), 0 0 0 1px rgba(25,240,165,.12);
}
.mini-card__no{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--neon);
  display:block;
  margin-bottom:14px;
}
.mini-card h3{
  font-size:19px;
  font-weight:800;
  margin-bottom:10px;
  letter-spacing:-.01em;
}
.mini-card p{color:var(--muted);font-size:15px;line-height:1.8;}

/* 浅色阅读区 + 目录 */
.light-zone{
  background:var(--light);
  color:var(--ink);
  border-radius:var(--radius-l);
  padding:56px 48px;
  box-shadow:var(--shadow-2);
}
.light-zone .eyebrow{color:var(--neon-deep);}
.light-zone .eyebrow::before{background:var(--neon-deep);box-shadow:none;}
.light-zone h2{color:var(--ink);}
.light-zone .lead{color:var(--ink-muted);font-size:15px;max-width:680px;margin-top:10px;}

.cat-layout{
  display:grid;
  grid-template-columns:24% minmax(0,1fr);
  gap:44px;
  align-items:start;
  margin-top:40px;
}
.toc{
  position:sticky;
  top:118px;
  background:#fff;
  border:1px solid rgba(21,24,29,.1);
  border-radius:var(--radius-m);
  padding:22px 20px;
}
.toc h3{
  font-size:13px;
  letter-spacing:.14em;
  text-transform:uppercase;
  font-family:var(--font-mono);
  color:var(--ink-muted);
  margin-bottom:14px;
}
.toc a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 0;
  font-size:15px;
  color:#3B4249;
  border-bottom:1px dashed rgba(21,24,29,.08);
  transition:transform .18s ease, color .18s ease;
}
.toc a:last-child{border-bottom:0;}
.toc a::before{
  content:"";
  width:6px;height:6px;
  border-radius:2px;
  background:rgba(21,24,29,.18);
  flex:none;
  transition:background .18s ease, box-shadow .18s ease;
}
.toc a:hover{
  color:var(--neon-deep);
  transform:translateX(4px);
}
.toc a:hover::before{background:var(--neon-deep);box-shadow:0 0 8px rgba(12,143,99,.5);}
.toc__note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid rgba(21,24,29,.1);
  font-size:13px;
  color:var(--ink-muted);
  line-height:1.7;
}

.idx-list{
  border-top:1px solid rgba(21,24,29,.12);
}
.idx-item{
  position:relative;
  display:grid;
  grid-template-columns:64px minmax(0,1fr) 176px;
  gap:20px;
  align-items:start;
  padding:26px 20px 26px 8px;
  border-bottom:1px solid rgba(21,24,29,.12);
  transition:background .22s ease, box-shadow .22s ease, transform .22s ease;
}
.idx-item::after{
  content:"→";
  position:absolute;
  right:20px;
  bottom:26px;
  color:var(--neon-deep);
  opacity:0;
  transform:translateX(-6px);
  transition:opacity .22s ease, transform .22s ease;
  font-size:16px;
}
.idx-item:hover{
  background:#fff;
  box-shadow:0 14px 34px rgba(21,24,29,.08);
  border-radius:var(--radius-m);
}
.idx-item:hover::after{opacity:1;transform:translateX(0);}
.idx-item__no{
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:700;
  color:rgba(21,24,29,.2);
  line-height:1.1;
  letter-spacing:-.02em;
  transition:color .22s ease;
}
.idx-item:hover .idx-item__no{color:var(--neon-deep);}
.idx-item h3{
  font-size:18px;
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:8px;
  color:var(--ink);
}
.idx-item h3 a:hover{color:var(--neon-deep);}
.idx-item p{
  font-size:15px;
  color:var(--ink-muted);
  line-height:1.8;
  max-width:640px;
}
.idx-item__meta{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:8px;
  font-size:13px;
  color:var(--ink-muted);
}
.idx-item__meta time{font-family:var(--font-mono);font-size:12px;}

/* 场景卡片 */
.card-grid{row-gap:26px;}
.scene-card{
  position:relative;
  height:100%;
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(25,240,165,.45);
  box-shadow:0 22px 50px rgba(0,0,0,.55);
}
.scene-card__media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:#0B0D10;
}
.scene-card__media img{
  width:100%;height:100%;object-fit:cover;
  opacity:.78;
  transition:transform .6s ease, opacity .4s ease;
}
.scene-card:hover .scene-card__media img{transform:scale(1.05);opacity:.92;}
.scene-card__media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,15,18,.15) 0%,rgba(13,15,18,.85) 100%);
}
.scene-card__tag{
  position:absolute;
  left:18px;top:18px;
  z-index:2;
}
.scene-card__body{
  padding:22px 22px 26px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.scene-card__body h3{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
}
.scene-card__body p{color:var(--muted);font-size:15px;line-height:1.8;flex:1;}

/* 流程 */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
}
.step{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:28px 24px;
  transition:border-color .25s ease, transform .25s ease;
}
.step:hover{border-color:rgba(25,240,165,.4);transform:translateY(-3px);}
.step__no{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.2em;
  color:var(--neon);
  display:block;
  margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:800;margin-bottom:8px;}
.step p{color:var(--muted);font-size:14px;line-height:1.8;}
.step::before{
  content:"";
  position:absolute;
  top:0;left:24px;
  width:36px;height:3px;
  border-radius:0 0 3px 3px;
  background:var(--neon);
  box-shadow:0 0 12px var(--neon-glow);
}

/* FAQ */
.faq-wrap{
  display:grid;
  grid-template-columns:minmax(0,320px) minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.faq-wrap h2{font-size:clamp(24px,3vw,36px);font-weight:900;letter-spacing:-.02em;line-height:1.2;}
.faq-wrap .faq-side p{color:var(--muted);font-size:15px;margin-top:14px;}
.faq .accordion{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
  margin:0;
}
.faq .accordion-item{
  border:0;
  border-bottom:1px solid var(--line);
  background:transparent;
}
.faq .accordion-title{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:56px;
  padding:20px 8px 20px 20px;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  transition:color .2s ease, padding .2s ease;
}
.faq .accordion-title::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:0;
  border-radius:3px;
  background:var(--neon);
  box-shadow:0 0 10px var(--neon-glow);
  transition:height .2s ease;
}
.faq .accordion-item.is-active .accordion-title::before{height:28px;}
.faq .accordion-title::after{display:none;}
.faq .accordion-title:hover{color:var(--neon);}
.faq__icon{
  flex:none;
  width:26px;height:26px;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);
  border-radius:8px;
  font-size:15px;
  color:var(--neon);
  transition:transform .2s ease, border-color .2s ease;
}
.faq .accordion-item.is-active .faq__icon{transform:rotate(90deg);border-color:rgba(25,240,165,.5);}
.faq .accordion-content{
  padding:0 20px 24px 20px;
  background:transparent;
  border:0;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
}

/* CTA 带 */
.cta-band{
  position:relative;
  overflow:hidden;
  border:1px solid rgba(25,240,165,.35);
  border-radius:var(--radius-l);
  padding:48px;
  background:
    radial-gradient(680px 240px at 12% 0%,rgba(25,240,165,.16),transparent 70%),
    linear-gradient(180deg,var(--surface-2),var(--surface));
  box-shadow:0 1px 0 rgba(255,255,255,.05) inset, 0 24px 56px rgba(0,0,0,.5);
}
.cta-band__inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{
  font-size:clamp(22px,2.8vw,34px);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.25;
  max-width:620px;
}
.cta-band p{color:var(--muted);font-size:15px;margin-top:12px;max-width:560px;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-badges{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top:30px;
  padding-top:24px;
  border-top:1px solid var(--line);
}

/* 页脚 */
.site-footer{
  background:#0A0C0F;
  border-top:1px solid rgba(25,240,165,.28);
  margin-top:96px;
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  color:var(--muted);
  font-size:14px;
  line-height:1.85;
  margin-top:18px;
  max-width:320px;
}
.site-footer h4{
  font-size:14px;
  font-weight:800;
  letter-spacing:.06em;
  color:#fff;
  margin-bottom:18px;
}
.site-footer ul li{margin-bottom:11px;}
.site-footer ul a,
.site-footer ul li{
  color:var(--muted);
  font-size:14px;
}
.site-footer ul a{
  display:inline-block;
  transition:transform .18s ease, color .18s ease;
}
.site-footer ul a:hover{
  color:var(--neon);
  transform:translateX(2px);
}
.footer-contact li{line-height:1.75;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 30px;
  border-top:1px solid var(--line);
  color:#787F87;
  font-size:13px;
  font-family:var(--font-mono);
}

/* 滚动渐入 */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s ease, transform .55s ease;
}
.reveal.is-visible{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1199px){
  :root{--container:1140px;--gap-section:80px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
}
@media (max-width:1023px){
  :root{--gap-section:64px;}
  .container{padding:0 28px;}
  .nav__toggle{display:inline-flex;}
  .nav__menu{
    position:absolute;
    top:100%;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:14px 24px 22px;
    background:#101317;
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 48px rgba(0,0,0,.6);
    opacity:0;
    transform:translateY(-10px);
    pointer-events:none;
    max-height:calc(100vh - 120px);
    overflow:auto;
    transition:opacity .2s ease, transform .2s ease;
  }
  .nav__menu.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav__menu a{padding:14px 12px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav__menu a.is-active::after{left:12px;right:auto;width:24px;}
  .nav{min-height:66px;}
  .hero__inner{padding:44px 28px 56px;}
  .light-zone{padding:40px 28px;}
  .cat-layout{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;}
  .idx-item{grid-template-columns:48px minmax(0,1fr);}
  .idx-item__meta{grid-column:2;flex-direction:row;align-items:center;}
  .idx-item::after{display:none;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .footer-grid > div:last-child{grid-column:auto;}
}
@media (max-width:639px){
  :root{--gap-section:44px;}
  .container{padding:0 20px;}
  .hero__inner{padding:34px 20px 46px;}
  .hero__actions .btn{height:44px;flex:1;min-width:150px;}
  .stat-row{grid-template-columns:1fr;gap:14px;margin-top:36px;}
  .light-zone{padding:30px 20px;border-radius:16px;}
  .idx-item{grid-template-columns:1fr;gap:10px;padding:22px 14px 22px 6px;}
  .idx-item__no{font-size:20px;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 20px;border-radius:16px;}
  .cta-band__actions .btn{width:100%;}
  .scene-card__media{aspect-ratio:16/11;}
  .section-head{margin-bottom:28px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --neon:#19F0A5;
  --neon-dim:rgba(25,240,165,.5);
  --neon-soft:rgba(25,240,165,.12);
  --amber:#FF7A2F;
  --ink:#0D0F12;
  --panel:#15181D;
  --panel-2:#1B1F26;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#ECEDEF;
  --muted:#9AA1A9;
  --paper:#F6F6F3;
  --ink-paper:#15181D;
  --muted-paper:#5C636B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04),0 16px 38px rgba(0,0,0,.42);
  --shadow-2:0 2px 0 rgba(255,255,255,.05),0 28px 70px rgba(0,0,0,.55);
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,"Courier New",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --container:1240px;
  --gap:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;background:var(--ink);color:var(--text);font-family:var(--sans);
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,h5{font-family:var(--sans);margin:0;color:var(--text);letter-spacing:-.02em;font-weight:800;line-height:1.22;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
strong{font-weight:800;}
::selection{background:var(--neon);color:#06120C;}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}

/* ============ 顶栏与导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:rgba(13,15,18,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
.topbar{border-bottom:1px solid var(--line);background:linear-gradient(90deg,rgba(25,240,165,.08),rgba(13,15,18,0) 60%);}
.topbar__inner{display:flex;align-items:center;gap:12px;height:36px;font-size:13px;color:var(--muted);}
.topbar__dot{width:7px;height:7px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px var(--neon);flex:0 0 auto;animation:blink 2.4s linear infinite;}
.topbar__inner p{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__close{margin-left:auto;color:var(--muted);width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:color .18s,background .18s;}
.topbar__close:hover{color:#fff;background:rgba(255,255,255,.08);}
.site-header.is-collapsed .topbar{display:none;}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}

.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px;}
.logo{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo__mark{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:700;font-size:15px;letter-spacing:.06em;color:#06120C;
  background:linear-gradient(140deg,var(--neon),#0FB27A);
  box-shadow:0 0 0 1px rgba(25,240,165,.35),0 10px 26px rgba(25,240,165,.22);
}
.logo__text{display:flex;flex-direction:column;font-size:17px;font-weight:800;color:#fff;letter-spacing:-.01em;line-height:1.2;}
.logo__text small{font-family:var(--mono);font-size:10px;letter-spacing:.22em;color:var(--muted);font-weight:500;margin-top:3px;}
.nav__menu{display:flex;align-items:center;justify-content:center;gap:6px;flex:1;}
.nav__menu a{
  position:relative;padding:11px 14px;border-radius:var(--r-sm);font-size:15px;color:var(--muted);
  transition:color .18s ease,transform .12s ease;
}
.nav__menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 12px var(--neon);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav__menu a:hover{color:var(--text);transform:translateY(-2px);}
.nav__menu a:hover::after{transform:scaleX(1);}
.nav__menu a.is-active{color:#fff;font-weight:600;}
.nav__menu a.is-active::after{transform:scaleX(1);}
.nav__right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav__toggle{display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:var(--r-sm);flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:border-color .2s;}
.nav__toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .2s ease;}
.nav__toggle:hover{border-color:var(--neon-dim);}
.nav__toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav__toggle.is-open span:nth-child(2){opacity:0;}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--r-sm);font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  transition:transform .16s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn--primary{background:var(--neon);color:#06120C;box-shadow:0 8px 24px rgba(25,240,165,.24);}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(25,240,165,.4);color:#06120C;}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--text);}
.btn--ghost:hover{border-color:var(--neon);color:var(--neon);transform:translateY(-2px);}
.btn--sm{height:38px;padding:0 18px;font-size:14px;}
.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}

/* ============ 通用板块 ============ */
.section{padding:var(--gap) 0;position:relative;}
.section--tight{padding-top:64px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;flex-wrap:wrap;margin-bottom:44px;}
.eyebrow{display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--neon);margin-bottom:14px;}
.section-head h2{font-size:clamp(24px,3vw,36px);}
.lead{color:var(--muted);max-width:660px;margin-top:14px;font-size:16px;}
.hr-neon{height:1px;border:0;margin:0;background:linear-gradient(90deg,rgba(25,240,165,.55),rgba(255,255,255,.04) 70%,transparent);}

/* ============ 内页首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;padding:76px 0 0;color:#fff;
  background-image:
    linear-gradient(180deg,rgba(13,15,18,.86) 0%,rgba(13,15,18,.62) 42%,rgba(13,15,18,.97) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(25,240,165,.6),transparent);}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--muted);margin-bottom:22px;}
.crumbs a{transition:color .18s;}
.crumbs a:hover{color:var(--neon);}
.crumbs span.sep{color:rgba(255,255,255,.28);}
.crumbs .current{color:#CFD4D9;}
.page-hero h1{font-size:clamp(30px,4.6vw,54px);max-width:900px;}
.page-hero .sub{font-size:clamp(15px,1.5vw,18px);color:#C6CCD2;margin-top:20px;max-width:680px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:60px;padding:28px 0 34px;border-top:1px solid var(--line);}
.hero-stats .num{font-family:var(--mono);font-size:clamp(26px,3.4vw,38px);font-weight:700;color:#fff;letter-spacing:-.02em;}
.hero-stats .num em{font-style:normal;color:var(--neon);}
.hero-stats .label{font-size:13px;color:var(--muted);margin-top:6px;}

/* ============ 标签条 ============ */
.filter-row{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px;}
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line-strong);background:transparent;
  color:var(--muted);font-size:14px;transition:color .18s,border-color .18s,background .2s,transform .16s,box-shadow .2s;
}
.chip:hover{color:#fff;border-color:var(--neon-dim);transform:translateY(-1px);}
.chip.is-active{background:var(--neon);border-color:var(--neon);color:#06120C;font-weight:600;box-shadow:0 0 0 1px rgba(25,240,165,.35),0 10px 26px rgba(25,240,165,.22);}
.filter-note{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.06em;}

/* ============ 大图卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.data-card{
  position:relative;display:flex;flex-direction:column;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.data-card:hover{transform:translateY(-4px);border-color:rgba(25,240,165,.55);box-shadow:var(--shadow-2);}
.data-card__media{position:relative;width:100%;padding-bottom:62%;overflow:hidden;background:#0B0D10;}
.data-card__media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.02);transition:transform .6s cubic-bezier(.2,.7,.2,1);}
.data-card:hover .data-card__media img{transform:scale(1.08);}
.data-card__overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,15,18,.18) 0%,rgba(13,15,18,.5) 52%,rgba(13,15,18,.94) 100%);
  transition:opacity .4s ease;
}
.data-card:hover .data-card__overlay{opacity:.72;}
.data-card__head{position:absolute;left:22px;right:22px;bottom:18px;transition:transform .3s ease;}
.data-card:hover .data-card__head{transform:translateY(-4px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12px;line-height:1.6;border:1px solid var(--neon-dim);color:var(--neon);
  background:rgba(13,15,18,.55);letter-spacing:.02em;
}
.badge--amber{border-color:rgba(255,122,47,.6);color:var(--amber);background:rgba(255,122,47,.12);}
.data-card__title{font-size:20px;margin-top:12px;color:#fff;font-weight:800;}
.data-card__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:16px;flex:1;}
.data-card__body p{color:var(--muted);font-size:15px;}
.meta-chips{display:flex;flex-wrap:wrap;gap:8px;}
.meta-chips span{
  font-family:var(--mono);font-size:12px;color:#C6CCD2;padding:5px 10px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--neon);font-weight:600;font-size:15px;margin-top:auto;}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(5px);}

/* ============ 能力三栏 ============ */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature{
  background:linear-gradient(180deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);border-radius:var(--r-md);padding:30px 26px;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.feature:hover{transform:translateY(-4px);border-color:rgba(25,240,165,.45);box-shadow:var(--shadow-1);}
.feature__icon{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--neon-soft);border:1px solid rgba(25,240,165,.3);color:var(--neon);font-size:18px;margin-bottom:18px;
}
.feature h3{font-size:19px;margin-bottom:12px;}
.feature p{color:var(--muted);font-size:15px;}
.feature ul{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.feature ul li{position:relative;padding-left:18px;font-size:14px;color:#C6CCD2;}
.feature ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px var(--neon-dim);}

/* ============ 浅色阅读带 ============ */
.band-paper{background:var(--paper);color:var(--ink-paper);padding:var(--gap) 0;}
.band-paper h2,.band-paper h3,.band-paper h4{color:var(--ink-paper);}
.band-paper .eyebrow{color:#0E8F63;}
.band-paper .lead{color:var(--muted-paper);}
.band-paper .hr-neon{background:linear-gradient(90deg,rgba(14,143,99,.5),rgba(21,24,29,.08) 70%,transparent);}

/* Foundation 网格微调 */
.grid-x.gx-reset{margin-left:-14px;margin-right:-14px;}
.grid-x.gx-reset>.cell{padding-left:14px;padding-right:14px;}

.step{
  height:100%;background:#fff;border:1px solid rgba(21,24,29,.09);border-radius:var(--r-md);
  padding:26px 22px;box-shadow:0 1px 0 rgba(21,24,29,.04),0 14px 32px rgba(21,24,29,.06);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(14,143,99,.35);box-shadow:0 18px 40px rgba(21,24,29,.1);}
.step__no{font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:#0E8F63;margin-bottom:12px;}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{color:var(--muted-paper);font-size:15px;}

.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:38px;}
.compare__col{border-radius:var(--r-md);padding:26px 24px;border:1px solid rgba(21,24,29,.1);background:#fff;}
.compare__col h4{font-size:16px;margin-bottom:16px;display:flex;align-items:center;gap:9px;}
.compare__col ul{display:flex;flex-direction:column;gap:12px;}
.compare__col li{position:relative;padding-left:20px;font-size:15px;color:var(--muted-paper);}
.compare__col li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:2px;border-radius:2px;background:#0E8F63;}
.compare__col--muted li::before{background:rgba(21,24,29,.28);}
.tag-dark{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12px;background:rgba(14,143,99,.1);color:#0E8F63;font-weight:600;}
.tag-dark--gray{background:rgba(21,24,29,.06);color:var(--muted-paper);}

/* ============ 指标长条 ============ */
.metric-list{border-top:1px solid var(--line);}
.metric-row{
  display:grid;grid-template-columns:220px 1fr 150px;align-items:center;gap:28px;
  padding:24px 0;border-bottom:1px solid var(--line);transition:background .25s ease;
}
.metric-row:hover{background:rgba(25,240,165,.04);}
.metric-row__name{font-size:16px;font-weight:600;color:#fff;}
.metric-row__name small{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--muted);font-weight:400;margin-top:5px;}
.metric-row__bar{height:6px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;}
.metric-row__bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--neon),rgba(25,240,165,.35));box-shadow:0 0 16px rgba(25,240,165,.35);}
.metric-row__val{font-family:var(--mono);font-size:20px;color:#fff;text-align:right;letter-spacing:-.02em;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:start;}
.faq{display:flex;flex-direction:column;}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  position:relative;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:20px 4px 20px 18px;font-size:17px;font-weight:600;color:var(--text);cursor:pointer;
  transition:color .2s ease;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;background:var(--neon);
  box-shadow:0 0 12px var(--neon-dim);transform:scaleY(0);transform-origin:top;transition:transform .2s ease;
}
.faq details[open] summary::before{transform:scaleY(1);}
.faq summary:hover{color:#fff;}
.faq summary i{color:var(--muted);font-size:14px;transition:transform .2s ease,color .2s ease;}
.faq details[open] summary i{transform:rotate(90deg);color:var(--neon);}
.faq__answer{padding:0 8px 24px 18px;color:var(--muted);font-size:15px;max-width:820px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;border:1px solid rgba(25,240,165,.35);border-radius:var(--r-lg);
  padding:40px 44px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  background:
    radial-gradient(120% 180% at 0% 0%,rgba(25,240,165,.16),transparent 58%),
    linear-gradient(180deg,var(--panel-2),var(--panel));
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-band p{color:var(--muted);max-width:620px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-badges{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px;}
.cta-badges span{font-family:var(--mono);font-size:12px;color:#C6CCD2;padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.04);}

/* ============ 页脚 ============ */
.site-footer{background:#0A0C0F;border-top:1px solid rgba(25,240,165,.28);padding:72px 0 28px;margin-top:var(--gap);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;}
.footer-brand p{color:var(--muted);font-size:15px;margin-top:20px;max-width:340px;}
.site-footer h4{font-size:15px;letter-spacing:.02em;margin-bottom:20px;color:#fff;}
.site-footer ul{display:flex;flex-direction:column;gap:12px;}
.site-footer ul a{color:var(--muted);font-size:14px;display:inline-block;transition:color .18s ease,transform .18s ease;}
.site-footer ul a:hover{color:var(--neon);transform:translateX(2px);}
.footer-contact li{color:var(--muted);font-size:14px;}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:#7C838A;font-family:var(--mono);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--container:1120px;}
  .faq-wrap{grid-template-columns:280px 1fr;gap:40px;}
}
@media (max-width:1023px){
  :root{--gap:64px;}
  .container{padding:0 28px;}
  .nav{height:68px;}
  .nav__menu{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:90;
    flex-direction:column;justify-content:flex-start;align-items:stretch;gap:6px;
    padding:92px 22px 28px;background:#101318;border-left:1px solid var(--line);
    box-shadow:-24px 0 60px rgba(0,0,0,.55);
    transform:translateX(102%);transition:transform .3s ease;flex:none;
  }
  .nav__menu.is-open{transform:translateX(0);}
  .nav__menu a{padding:14px 12px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav__menu a::after{left:12px;right:auto;width:26px;bottom:8px;}
  .nav__toggle{display:flex;}
  .card-grid{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .metric-row{grid-template-columns:1fr 130px;grid-template-areas:"name val" "bar bar";gap:14px 20px;}
  .metric-row__name{grid-area:name;}
  .metric-row__val{grid-area:val;}
  .metric-row__bar{grid-area:bar;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .page-hero{padding-top:56px;}
  .hero-stats{grid-template-columns:1fr;gap:18px;padding:24px 0 30px;}
  .section-head{margin-bottom:32px;}
  .cta-band{padding:30px 24px;}
  .footer-grid{grid-template-columns:1fr;}
  .data-card__head{left:18px;right:18px;}
  .data-card__body{padding:20px 18px 22px;}
}
@media (max-width:520px){
  :root{--gap:40px;}
  .logo__text{font-size:15px;}
  .logo__mark{width:38px;height:38px;border-radius:10px;font-size:14px;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .cta-band__actions{width:100%;}
  .crumbs{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .data-card__media img,.data-card,.feature,.step,.btn,.topbar__dot{transition:none;animation:none;}
  .data-card__media img{transform:none;}
}

/* roulang page: category3 */
:root{
  --neon:#19F0A5;
  --neon-dim:rgba(25,240,165,.14);
  --neon-line:rgba(25,240,165,.38);
  --amber:#FF7A2F;
  --amber-dim:rgba(255,122,47,.14);
  --bg:#0D0F12;
  --surface:#15181D;
  --surface-2:#1B1F25;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#ECEDEF;
  --muted:#9AA1A9;
  --paper:#F6F6F3;
  --ink:#15181D;
  --ink-muted:#5C636B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04),0 18px 40px -26px rgba(0,0,0,.9);
  --shadow-2:0 1px 0 rgba(255,255,255,.06),0 34px 72px -32px rgba(0,0,0,.95);
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --maxw:1240px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--neon);
  outline-offset:2px;
  border-radius:4px;
}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 40px;
}
@media (min-width:1440px){:root{--maxw:1320px;}}

/* ---------- 公告条 ---------- */
.topbar{
  background:linear-gradient(90deg,rgba(25,240,165,.12),rgba(255,122,47,.08) 60%,transparent);
  border-bottom:1px solid var(--line);
  font-size:13px;
}
.topbar__inner{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:36px;
  padding:6px 0;
  color:var(--muted);
}
.topbar__tag{
  flex:none;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--neon);
  border:1px solid var(--neon-line);
  border-radius:999px;
  padding:1px 8px;
}
.topbar__text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar__close{
  flex:none;
  width:24px;height:24px;
  display:grid;place-items:center;
  border-radius:6px;
  color:var(--muted);
  border:1px solid transparent;
}
.topbar__close:hover{color:var(--neon);border-color:var(--neon-line);}

/* ---------- 头部与导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(13,15,18,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:72px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.logo__mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(140deg,var(--neon),#0FB37B);
  color:#06110C;
  font-family:var(--mono);
  font-weight:700;
  font-size:15px;
  letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(25,240,165,.4),0 10px 26px -12px rgba(25,240,165,.7);
}
.logo__text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
  font-size:16px;
  font-weight:700;
  letter-spacing:-.01em;
}
.logo__text small{
  font-family:var(--mono);
  font-size:9.5px;
  letter-spacing:.16em;
  color:var(--muted);
  font-weight:400;
}
.nav__menu{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav__menu a{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--muted);
  border-radius:var(--r-sm);
  transition:color .18s ease,transform .18s ease,background .18s ease;
}
.nav__menu a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--neon);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
  box-shadow:0 0 10px rgba(25,240,165,.8);
}
.nav__menu a:hover{color:var(--text);transform:translateY(-1px);}
.nav__menu a:hover::after{transform:scaleX(.6);}
.nav__menu a.is-active{color:var(--text);font-weight:600;}
.nav__menu a.is-active::after{transform:scaleX(1);}
.nav__right{display:flex;align-items:center;gap:14px;flex:none;}
.nav__toggle{
  display:none;
  width:42px;height:38px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-sm);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav__toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.nav__toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav__toggle.is-open span:nth-child(2){opacity:0;}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  border:1px solid transparent;
  white-space:nowrap;
}
.btn--primary{
  background:var(--neon);
  color:#06110C;
  box-shadow:0 10px 26px -14px rgba(25,240,165,.9);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -14px rgba(25,240,165,1);}
.btn--ghost{
  border-color:var(--neon-line);
  color:var(--neon);
  background:rgba(25,240,165,.05);
}
.btn--ghost:hover{transform:translateY(-2px);box-shadow:0 14px 30px -18px rgba(25,240,165,.9);background:rgba(25,240,165,.11);}
.btn--quiet{
  border-color:var(--line-strong);
  color:var(--text);
  background:rgba(255,255,255,.02);
}
.btn--quiet:hover{border-color:var(--neon-line);color:var(--neon);transform:translateY(-2px);}
.btn--sm{height:36px;padding:0 16px;font-size:14px;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--neon);
}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover::after{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.crumbs{
  border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.01);
}
.crumbs__inner{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:12px 0;
}
.crumbs__inner a:hover{color:var(--neon);}
.crumbs__inner .sep{opacity:.5;}
.crumbs__inner .current{color:var(--text);}

/* ---------- 内页首屏 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero__bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center 30%;
  opacity:.34;
  animation:slowpan 24s linear infinite alternate;
}
.page-hero__bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(13,15,18,.96) 8%,rgba(13,15,18,.72) 52%,rgba(13,15,18,.92) 100%);
}
@keyframes slowpan{
  from{transform:scale(1) translate3d(0,0,0);}
  to{transform:scale(1.08) translate3d(-1.2%,-1%,0);}
}
.page-hero__inner{
  position:relative;
  padding:72px 0 64px;
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:48px;
  align-items:end;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--neon);
  text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:26px;height:2px;
  background:var(--neon);
  box-shadow:0 0 10px rgba(25,240,165,.9);
}
.page-hero h1{
  font-size:clamp(30px,4.4vw,54px);
  line-height:1.14;
  font-weight:900;
  letter-spacing:-.02em;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--neon);
}
.page-hero__lead{
  margin-top:18px;
  max-width:620px;
  font-size:17px;
  color:#C7CCD3;
}
.page-hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.hero-card{
  background:linear-gradient(160deg,rgba(21,24,29,.96),rgba(21,24,29,.7));
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--shadow-2);
}
.hero-card h3{
  font-size:15px;
  letter-spacing:.02em;
  margin-bottom:14px;
  color:var(--text);
}
.hero-card ul li{
  display:flex;
  gap:10px;
  padding:9px 0;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--muted);
}
.hero-card ul li:first-child{border-top:0;}
.hero-card ul li b{
  flex:none;
  font-family:var(--mono);
  color:var(--neon);
  font-weight:600;
  font-size:13px;
}

/* ---------- 指标长条 ---------- */
.metric-strip{
  border-bottom:1px solid var(--line);
  background:var(--surface);
}
.metric-strip__inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.metric-long{
  padding:22px 26px;
  border-left:1px solid var(--line);
  display:flex;
  align-items:baseline;
  gap:14px;
}
.metric-long:first-child{border-left:0;}
.metric-long .num{
  font-family:var(--mono);
  font-size:30px;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--text);
}
.metric-long .num.is-neon{color:var(--neon);}
.metric-long .label{
  font-size:13.5px;
  color:var(--muted);
  line-height:1.5;
}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--paper{background:var(--paper);color:var(--ink);}
.section--surface{background:var(--surface);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,3vw,36px);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.2;
}
.section-head p{
  margin-top:10px;
  max-width:660px;
  color:var(--muted);
  font-size:15.5px;
}
.section--paper .section-head p{color:var(--ink-muted);}

/* ---------- 折叠面板（轴线） ---------- */
.rail{
  position:relative;
  padding-left:34px;
}
.rail::before{
  content:"";
  position:absolute;
  left:11px;
  top:8px;
  bottom:8px;
  width:1px;
  background:linear-gradient(180deg,var(--neon),rgba(25,240,165,.06));
}
.acc-item{
  position:relative;
  border-top:1px solid var(--line);
}
.acc-item:last-child{border-bottom:1px solid var(--line);}
.acc-item::before{
  content:"";
  position:absolute;
  left:-28px;
  top:30px;
  width:9px;height:9px;
  border-radius:50%;
  background:var(--bg);
  border:1px solid rgba(255,255,255,.28);
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.acc-item.is-open::before{
  background:var(--neon);
  border-color:var(--neon);
  box-shadow:0 0 12px rgba(25,240,165,.9);
}
.acc-head{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 6px 18px 0;
  text-align:left;
}
.acc-head .idx{
  flex:none;
  font-family:var(--mono);
  font-size:13px;
  color:var(--muted);
  min-width:34px;
}
.acc-head .name{
  flex:1;
  font-size:17px;
  font-weight:600;
  letter-spacing:-.01em;
}
.acc-head .badge{flex:none;}
.acc-head .icon{
  flex:none;
  width:26px;height:26px;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);
  border-radius:50%;
  color:var(--muted);
  font-size:14px;
  line-height:1;
  transition:transform .2s ease,color .2s ease,border-color .2s ease;
}
.acc-head:hover .name{color:var(--neon);}
.acc-head:hover .icon{border-color:var(--neon-line);color:var(--neon);}
.acc-item.is-open .acc-head .icon{transform:rotate(90deg);color:var(--neon);border-color:var(--neon-line);}
.acc-item.is-open .acc-head .name{color:var(--neon);}
.acc-body{
  display:none;
  padding:0 60px 24px 50px;
}
.acc-item.is-open .acc-body{display:block;}
.acc-body p{
  font-size:15.5px;
  color:#B9C0C7;
  max-width:820px;
}
.acc-body ul{margin-top:12px;}
.acc-body ul li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  color:var(--muted);
  margin-bottom:6px;
}
.acc-body ul li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:1px;
  background:var(--neon);
}
.acc-body .link-arrow{margin-top:16px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 11px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  border:1px solid var(--line-strong);
  color:var(--muted);
  white-space:nowrap;
}
.badge--neon{border-color:var(--neon-line);color:var(--neon);background:var(--neon-dim);}
.badge--amber{border-color:transparent;background:var(--amber);color:#1A0C02;font-weight:600;}
.badge--paper{border-color:rgba(21,24,29,.16);color:var(--ink-muted);}

/* ---------- 场景卡片 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--neon-line);
  box-shadow:0 1px 0 rgba(255,255,255,.06),0 30px 60px -30px rgba(25,240,165,.45);
}
.card__media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:#0F1216;
}
.card__media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s cubic-bezier(.2,.7,.3,1);
}
.card:hover .card__media img{transform:scale(1.06);}
.card__media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(13,15,18,0) 35%,rgba(13,15,18,.82) 100%);
}
.card__media .badge{position:absolute;top:14px;left:14px;z-index:2;background:rgba(13,15,18,.72);}
.card__body{
  padding:20px 22px 24px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.card__body h3{font-size:18px;font-weight:700;letter-spacing:-.01em;}
.card__body p{font-size:14.5px;color:var(--muted);}
.card__foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--muted);
}
.card__foot .mono{font-family:var(--mono);}

/* ---------- 步骤流程 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:var(--gap);
  counter-reset:step;
}
.step{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 22px 24px;
  transition:border-color .2s ease,transform .2s ease;
}
.step:hover{border-color:var(--neon-line);transform:translateY(-3px);}
.step__num{
  font-family:var(--mono);
  font-size:13px;
  color:var(--neon);
  letter-spacing:.1em;
  margin-bottom:14px;
  display:block;
}
.step h3{font-size:17px;margin-bottom:10px;font-weight:700;}
.step p{font-size:14.5px;color:var(--muted);}
.step__line{
  position:absolute;
  top:38px;right:-12px;
  width:24px;height:1px;
  background:var(--line-strong);
}
.step:last-child .step__line{display:none;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-head{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  min-height:60px;
  padding:10px 6px 10px 0;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
}
.faq-head .qmark{
  font-family:var(--mono);
  font-size:12px;
  color:var(--neon);
  border:1px solid var(--neon-line);
  border-radius:6px;
  padding:1px 7px;
  flex:none;
}
.faq-head .txt{flex:1;}
.faq-head .icon{
  flex:none;
  width:24px;height:24px;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);
  border-radius:50%;
  font-size:13px;
  color:var(--muted);
  transition:transform .2s ease,color .2s ease,border-color .2s ease;
}
.faq-item.is-open .faq-head{color:var(--neon);}
.faq-item.is-open .faq-head .icon{transform:rotate(90deg);color:var(--neon);border-color:var(--neon-line);}
.faq-body{
  display:none;
  padding:0 60px 22px 52px;
  font-size:15px;
  color:#B9C0C7;
}
.faq-item.is-open .faq-body{display:block;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  border:1px solid var(--line-strong);
  border-radius:var(--r-lg);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  overflow:hidden;
  background:
    radial-gradient(600px 200px at 12% 0%,rgba(25,240,165,.16),transparent 70%),
    var(--surface-2);
  flex-wrap:wrap;
}
.cta-band::after{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--neon),transparent);
  opacity:.7;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:900;letter-spacing:-.02em;}
.cta-band p{margin-top:10px;color:var(--muted);font-size:15px;max-width:560px;}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0A0C0F;
  border-top:1px solid var(--line);
  position:relative;
  padding-top:64px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,240,165,.7),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:36px;
  padding-bottom:48px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--muted);
  max-width:320px;
}
.site-footer h4{
  font-size:14px;
  letter-spacing:.06em;
  margin-bottom:16px;
  color:var(--text);
}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul li a,
.site-footer .footer-contact li{
  font-size:14px;
  color:var(--muted);
}
.site-footer ul li a{display:inline-block;transition:color .18s ease,transform .18s ease;}
.site-footer ul li a:hover{color:var(--neon);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--muted);
  flex-wrap:wrap;
}
.footer-bottom span{
  font-family:var(--mono);
  letter-spacing:.02em;
}

/* ---------- 滚动渐入 ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease;}
.js .reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .page-hero__inner{grid-template-columns:1fr;gap:32px;align-items:start;}
  .hero-card{max-width:560px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav__menu{
    position:absolute;
    left:0;right:0;top:100%;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:14px 24px 22px;
    background:rgba(13,15,18,.99);
    border-bottom:1px solid var(--line);
    display:none;
  }
  .nav__menu.is-open{display:flex;}
  .nav__menu a{padding:13px 8px;border-bottom:1px solid var(--line);font-size:16px;}
  .nav__menu a::after{display:none;}
  .nav__menu a.is-active{color:var(--neon);}
  .nav__toggle{display:flex;}
  .nav__right .btn--primary{display:none;}
  .section{padding:64px 0;}
  .section--tight{padding:48px 0;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step__line{display:none;}
  .metric-strip__inner{grid-template-columns:repeat(2,1fr);}
  .metric-long{border-left:0;border-top:1px solid var(--line);}
  .metric-long:nth-child(-n+2){border-top:0;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .cta-band{padding:32px 28px;}
}
@media (max-width:639px){
  .container{padding:0 20px;}
  .page-hero__inner{padding:48px 0 44px;}
  .page-hero h1{font-size:clamp(26px,8vw,34px);}
  .page-hero__lead{font-size:16px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:26px;}
  .card-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .metric-strip__inner{grid-template-columns:1fr;}
  .metric-long{border-top:1px solid var(--line);}
  .metric-long:first-child{border-top:0;}
  .rail{padding-left:24px;}
  .rail::before{left:5px;}
  .acc-item::before{left:-24px;}
  .acc-head{gap:12px;padding-right:0;}
  .acc-head .name{font-size:16px;}
  .acc-body{padding:0 0 20px;}
  .faq-body{padding:0 0 20px;}
  .faq-head{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{flex:1;}
  .hero-card{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;}
}