/* roulang page: index */
:root{
  --bg:#070B14;
  --bg-2:#0B1220;
  --surface:#0E1828;
  --primary:#2F6BFF;
  --cyan:#35E0C8;
  --orange:#FFB45C;
  --text:#E8F1FF;
  --muted:#8FA3BF;
  --line:rgba(120,200,255,.16);
  --line-strong:rgba(120,200,255,.32);
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:14px;
  --shadow:0 16px 40px rgba(0,0,0,.35);
  --font-num:"DIN Alternate","Bahnschrift","Arial Narrow",Arial,sans-serif;
}
*,*::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","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(820px 520px at 86% 6%, rgba(47,107,255,.18), transparent 70%),
    radial-gradient(620px 420px at 8% 62%, rgba(53,224,200,.08), transparent 72%),
    linear-gradient(rgba(120,200,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,200,255,.045) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (max-width:520px){.container{padding:0 16px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,20,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:15px;font-weight:800;letter-spacing:.02em;color:var(--text)}
.brand-text span{font-size:12px;letter-spacing:.14em;color:var(--cyan);font-weight:600}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{
  position:relative;
  font-size:14px;
  color:var(--muted);
  padding:6px 0;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--text);font-weight:600}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(53,224,200,.6);
}
.nav-search{
  display:flex;
  align-items:center;
  gap:6px;
  width:200px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:10px;
  padding:6px 10px;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.nav-search:focus-within{border-color:rgba(53,224,200,.55);box-shadow:0 0 0 3px rgba(53,224,200,.14)}
.nav-search input{
  flex:1;
  min-width:0;
  background:transparent;
  border:0;
  outline:none;
  font-size:13px;
  color:var(--text);
}
.nav-search input::placeholder{color:#647590}
.nav-search button{
  background:transparent;
  border:0;
  padding:0;
  display:grid;
  place-items:center;
  cursor:pointer;
  color:var(--muted);
  transition:color .2s ease;
}
.nav-search button:hover{color:var(--cyan)}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(14,24,40,.7);
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{border-color:rgba(53,224,200,.5)}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(7,11,20,.98);
  padding:16px 20px 24px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer .m-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:13px 4px;
  font-size:15px;
  color:var(--text);
  border-bottom:1px solid rgba(120,200,255,.1);
}
.mobile-drawer .m-link.active{color:var(--cyan)}
.mobile-drawer .m-search{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:10px;
  padding:9px 12px;
}
.mobile-drawer .m-search input{flex:1;background:transparent;border:0;outline:none;font-size:14px}
.mobile-drawer .btn{width:100%;margin-top:16px}
@media (max-width:1023px){
  .nav-links,.nav-search,.nav-right .btn-primary{display:none}
  .nav-toggle{display:flex}
  .nav-wrap{height:64px;padding:0 16px}
}
@media (min-width:1024px){.mobile-drawer{display:none !important}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:12px;
  padding:11px 18px;
  font-size:14px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s ease, background .2s ease, box-shadow .2s ease, border-color .2s ease, color .2s ease;
}
.btn-primary{
  background:linear-gradient(180deg,#3B78FF,#2456D8);
  color:#fff;
  border-color:rgba(53,224,200,.42);
  box-shadow:0 0 0 1px rgba(47,107,255,.22), 0 10px 24px rgba(47,107,255,.26);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(53,224,200,.4), 0 14px 30px rgba(47,107,255,.38);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(47,107,255,.3), 0 6px 16px rgba(47,107,255,.28)}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{background:rgba(53,224,200,.08);border-color:rgba(53,224,200,.52)}
.btn-lg{padding:13px 24px;font-size:15px}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--cyan);
  font-size:14px;
  font-weight:600;
  transition:gap .2s ease, color .2s ease;
}
.link-arrow:hover{gap:10px;text-decoration:underline;text-underline-offset:4px}

/* ---------- hero ---------- */
.hero{position:relative;padding:48px 0 56px}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--cyan);
  border:1px solid rgba(53,224,200,.3);
  background:rgba(53,224,200,.07);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:20px;
}
.hero h1{
  font-size:clamp(2rem,4vw,3.3rem);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.24;
}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero-sub{
  margin-top:18px;
  color:var(--muted);
  font-size:16px;
  max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(14,24,40,.62);
  font-size:13px;
  color:var(--muted);
}
.chip::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 8px rgba(53,224,200,.8);
}
.hero-visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  min-height:340px;
  box-shadow:var(--shadow);
}
.hero-visual img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.12),rgba(7,11,20,.85));
}
.hud{
  position:absolute;
  left:16px;right:16px;bottom:16px;
  z-index:2;
  border-radius:var(--radius);
  padding:16px 18px;
  background:rgba(14,24,40,.66);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(120,200,255,.2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.hud-title{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--cyan);
  margin-bottom:10px;
}
.hud-list{display:grid;gap:8px}
.hud-list li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text);
  padding-bottom:8px;
  border-bottom:1px dashed rgba(120,200,255,.14);
}
.hud-list li:last-child{border-bottom:0;padding-bottom:0}
.hud-list span{color:var(--muted);font-size:12px}
@media (min-width:1024px){
  .hero{padding:64px 0 76px}
  .hero-grid{grid-template-columns:7fr 5fr;gap:48px}
  .hero-visual{min-height:430px}
}

/* ---------- sections ---------- */
.section{padding:60px 0;position:relative}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:32px;
}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--cyan);
  margin-bottom:10px;
}
.section-title{font-size:clamp(1.55rem,2.5vw,2.15rem);font-weight:700;letter-spacing:-.01em}
.section-desc{margin-top:10px;color:var(--muted);font-size:15px;max-width:62ch}
@media (min-width:1024px){.section{padding:88px 0}}

.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(53,224,200,.34);box-shadow:0 14px 34px rgba(0,0,0,.32)}

/* ---------- latest ---------- */
.latest-grid{display:grid;gap:18px}
.latest-feature{overflow:hidden;display:flex;flex-direction:column}
.latest-feature .feature-media{position:relative;overflow:hidden}
.latest-feature .feature-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .3s ease;
}
.latest-feature:hover .feature-media img{transform:scale(1.03)}
.feature-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px}
.feature-body h3{font-size:1.22rem;font-weight:700;line-height:1.5}
.feature-body h3 a:hover{color:var(--cyan)}
.feature-body p{color:var(--muted);font-size:14.5px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-top:auto;
  padding-top:6px;
  font-size:13px;
  color:#7488a3;
  font-family:var(--font-num);
  letter-spacing:.02em;
}
.latest-list{display:flex;flex-direction:column;gap:12px}
.latest-row{
  padding:16px 18px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--surface);
  display:flex;
  flex-direction:column;
  gap:8px;
  transition:transform .2s ease, border-color .2s ease, background .2s ease;
}
.latest-row:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.34);background:#101c2e}
.latest-row h3{font-size:15px;font-weight:600;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.latest-row h3 a:hover{color:var(--cyan)}
.latest-row p{color:var(--muted);font-size:13.5px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.latest-row .meta{padding-top:2px}
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  text-align:center;
  padding:56px 24px;
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-lg);
  background:rgba(14,24,40,.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.empty-state svg{color:rgba(53,224,200,.7)}
.empty-state p{color:var(--muted);font-size:15px}
@media (min-width:1024px){
  .latest-grid{grid-template-columns:1.1fr .9fr;gap:24px}
  .latest-feature{height:100%}
  .latest-feature .feature-media img{aspect-ratio:16/10;height:100%}
}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  align-self:flex-start;
  padding:4px 11px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.04em;
  border:1px solid var(--line);
  background:rgba(120,200,255,.08);
  color:var(--muted);
}
.badge-cyan{color:var(--cyan);border-color:rgba(53,224,200,.35);background:rgba(53,224,200,.1)}
.badge-orange{color:var(--orange);border-color:rgba(255,180,92,.35);background:rgba(255,180,92,.1)}

/* ---------- play / steps ---------- */
.play-grid{display:grid;gap:20px}
.play-main{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  min-height:320px;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:24px;
  background:#0b1220;
}
.play-main img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .3s ease;
}
.play-main::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.2),rgba(7,11,20,.94));
}
.play-main:hover img{transform:scale(1.03)}
.play-main-body{position:relative;z-index:2;display:flex;flex-direction:column;gap:10px}
.play-main .num{font-family:var(--font-num);font-size:30px;color:var(--cyan);line-height:1}
.play-main h3{font-size:1.2rem}
.play-main p{color:var(--muted);font-size:14px;line-height:1.8}
.steps{display:flex;flex-direction:column;gap:14px}
.step{
  display:flex;
  gap:16px;
  padding:18px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--surface);
  transition:border-color .2s ease, transform .2s ease;
}
.step:hover{border-color:rgba(53,224,200,.34);transform:translateY(-2px)}
.step-num{
  font-family:var(--font-num);
  font-size:20px;
  color:var(--cyan);
  flex:0 0 auto;
  line-height:1.4;
  width:34px;
}
.step h4{font-size:15.5px;margin-bottom:6px}
.step p{color:var(--muted);font-size:13.8px;line-height:1.75}
@media (min-width:900px){
  .play-grid{grid-template-columns:1.15fr .85fr;gap:24px}
  .play-main{min-height:100%}
}

/* ---------- rewards ---------- */
.reward-grid{display:grid;gap:18px}
.reward-main{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  min-height:320px;
  box-shadow:var(--shadow);
}
.reward-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.reward-main::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.18),rgba(7,11,20,.95));
}
.reward-main-body{
  position:relative;
  z-index:2;
  min-height:320px;
  padding:26px;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  gap:12px;
}
.reward-main-body h3{font-size:1.3rem}
.reward-main-body p{color:#b8c8de;font-size:14.5px;line-height:1.8}
.reward-tags{display:flex;flex-wrap:wrap;gap:8px}
.reward-side{display:flex;flex-direction:column;gap:16px}
.reward-mini{
  padding:20px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--surface);
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
  justify-content:center;
  transition:border-color .2s ease, transform .2s ease;
}
.reward-mini:hover{border-color:rgba(255,180,92,.4);transform:translateY(-2px)}
.reward-mini h4{font-size:16px}
.reward-mini p{color:var(--muted);font-size:13.8px;line-height:1.75}
@media (min-width:900px){
  .reward-grid{grid-template-columns:1.35fr .65fr;gap:24px}
}

/* ---------- progress ---------- */
.progress-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(14,24,40,.9),rgba(11,18,32,.9));
  padding:26px;
}
.progress-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:26px;
}
.progress-head h3{font-size:1.15rem}
.progress-track{display:grid;grid-template-columns:1fr;gap:14px;position:relative}
.progress-node{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--surface);
}
.node-dot{
  width:32px;height:32px;
  flex:0 0 auto;
  border-radius:50%;
  border:2px solid rgba(120,200,255,.35);
  background:var(--bg-2);
  display:grid;
  place-items:center;
  font-family:var(--font-num);
  font-size:13px;
  color:var(--muted);
  position:relative;
  z-index:1;
}
.progress-node.done .node-dot{border-color:var(--cyan);background:rgba(53,224,200,.16);color:var(--cyan)}
.progress-node.current .node-dot{
  border-color:var(--cyan);
  background:var(--cyan);
  color:#04211d;
  box-shadow:0 0 0 6px rgba(53,224,200,.14), 0 0 18px rgba(53,224,200,.5);
}
.node-text h4{font-size:15px}
.node-text p{color:var(--muted);font-size:13.5px;line-height:1.7}
@media (min-width:768px){
  .progress-track{grid-template-columns:repeat(4,1fr);gap:0}
  .progress-track::before{
    content:"";
    position:absolute;
    top:16px;left:10%;right:10%;
    height:2px;
    background:linear-gradient(90deg,rgba(53,224,200,.7),rgba(120,200,255,.16));
  }
  .progress-node{
    flex-direction:column;
    align-items:center;
    text-align:center;
    border:0;
    background:transparent;
    padding:0 8px;
    gap:12px;
  }
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(53,224,200,.24);
  background:
    linear-gradient(120deg,rgba(47,107,255,.24),rgba(7,11,20,.2) 60%),
    #0b1220;
  padding:44px 28px;
  display:flex;
  flex-direction:column;
  gap:22px;
  align-items:flex-start;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,200,.24),transparent 65%);
}
.cta-band::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:6px;
  background-image:repeating-linear-gradient(90deg,rgba(53,224,200,.5) 0 14px,transparent 14px 30px);
  opacity:.6;
}
.cta-band h2{font-size:clamp(1.5rem,2.4vw,2rem);position:relative;z-index:1}
.cta-band p{color:var(--muted);font-size:15px;max-width:64ch;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}
@media (min-width:900px){
  .cta-band{padding:56px 48px;flex-direction:row;align-items:center;justify-content:space-between}
  .cta-band .cta-text{max-width:56ch}
}

/* ---------- faq ---------- */
.faq-list{max-width:900px}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--surface);
  overflow:hidden;
  transition:border-color .2s ease, background .2s ease;
}
.faq-item + .faq-item{margin-top:12px}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:15.5px;
  font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-plus{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-plus::before,.faq-plus::after{
  content:"";
  position:absolute;
  background:var(--cyan);
  border-radius:2px;
  transition:transform .25s ease, opacity .25s ease;
}
.faq-plus::before{top:9px;left:2px;width:16px;height:2px}
.faq-plus::after{left:9px;top:2px;width:2px;height:16px}
.faq-item[open]{background:rgba(53,224,200,.06);border-color:rgba(53,224,200,.34)}
.faq-item[open] .faq-plus::after{transform:rotate(90deg);opacity:0}
.faq-answer{padding:0 22px 20px;color:var(--muted);font-size:14.5px;line-height:1.85}

/* ---------- footer ---------- */
.site-footer{
  background:#050910;
  border-top:1px solid var(--line);
  padding:56px 0 26px;
  position:relative;
  z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
.footer-brand{display:flex;flex-direction:column;gap:14px;max-width:34ch}
.footer-brand .brand-text b{font-size:15px}
.footer-desc{color:var(--muted);font-size:14px;line-height:1.8}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:#9fb2cc;margin-bottom:14px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--muted);font-size:14px;transition:color .2s ease}
.footer-col a:hover{color:var(--cyan)}
.footer-col p{color:var(--muted);font-size:14px;line-height:1.8}
.footer-bottom{
  margin-top:38px;
  padding-top:20px;
  border-top:1px solid rgba(120,200,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  justify-content:space-between;
  color:#6d809b;
  font-size:13px;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .card:hover,.latest-row:hover,.step:hover,.reward-mini:hover,.play-main:hover img,.latest-feature:hover .feature-media img{transform:none}
}

/* roulang page: article */
:root{
  --bg:#070B14;
  --bg-2:#0B1220;
  --surface:#0E1828;
  --surface-2:#101C2F;
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,.16);
  --accent:#35E0C8;
  --accent-soft:rgba(53,224,200,.12);
  --warn:#FFB45C;
  --danger:#FF6B6B;
  --text:#E8F1FF;
  --muted:#8FA3BF;
  --line:rgba(120,200,255,.16);
  --line-strong:rgba(120,200,255,.34);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-cta:0 16px 40px rgba(0,0,0,.35);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift","Arial Narrow",Arial,sans-serif;
  --max:1240px;
}
*,*::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:1.8;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.84);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:26px;min-height:70px;}
.brand{display:flex;align-items:center;gap:11px;flex:none;}
.brand-mark{width:36px;height:36px;flex:none;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:15.5px;font-weight:800;letter-spacing:.03em;color:var(--text);}
.brand-text span{font-size:11px;letter-spacing:.2em;color:var(--accent);}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:10px;}
.nav-links a{
  position:relative;padding:8px 0;font-size:14.5px;color:var(--muted);
  transition:color .2s ease;
}
.nav-links a:hover{color:var(--text);}
.nav-links a.active{color:var(--text);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 10px rgba(53,224,200,.65);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px;flex:none;}
.search-box{position:relative;width:200px;}
.search-box input{
  width:100%;height:38px;padding:0 14px 0 36px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:10px;
  color:var(--text);font-size:13.5px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:#647794;}
.search-box input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(53,224,200,.16);}
.search-box svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:15px;height:15px;stroke:#647794;}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#2F6BFF 0%,#2A5BE0 100%);
  color:#F4F9FF;border-color:rgba(53,224,200,.55);
  box-shadow:0 10px 26px rgba(47,107,255,.32),inset 0 0 0 1px rgba(53,224,200,.18);
}
.btn-primary:hover{background:linear-gradient(135deg,#3D79FF 0%,#2F6BFF 100%);transform:translateY(-2px);box-shadow:0 16px 34px rgba(47,107,255,.42),inset 0 0 0 1px rgba(53,224,200,.3);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(47,107,255,.3);}
.btn-ghost{
  background:transparent;color:var(--text);border-color:var(--line-strong);
}
.btn-ghost:hover{background:rgba(120,200,255,.08);border-color:var(--accent);transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:10px;}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;
}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  background:rgba(120,200,255,.08);border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.nav-toggle svg{width:18px;height:18px;stroke:var(--text);}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:rgba(9,14,24,.98);}
.mobile-drawer.is-open{display:block;}
.drawer-inner{padding:18px 24px 26px;display:flex;flex-direction:column;gap:16px;}
.drawer-search input{
  width:100%;height:42px;padding:0 14px;border-radius:10px;
  background:var(--bg-2);border:1px solid var(--line);color:var(--text);font-size:14px;outline:none;
}
.drawer-links{display:flex;flex-direction:column;gap:2px;}
.drawer-links a{
  padding:12px 4px;font-size:15px;color:var(--muted);
  border-bottom:1px solid rgba(120,200,255,.08);
}
.drawer-links a:last-child{border-bottom:0;}
.drawer-links a.active{color:var(--accent);font-weight:600;}

/* ============ article hero ============ */
.article-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:34px 0 46px;}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,11,20,.96) 0%,rgba(7,11,20,.78) 46%,rgba(7,11,20,.94) 100%),
             url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,200,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,200,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 75% 30%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse at 75% 30%,#000 0%,transparent 78%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-bottom:20px;overflow-x:auto;}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span.sep{color:#4A5C78;}
.breadcrumb span.now{color:#C3D6EE;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:11.5px;letter-spacing:.08em;font-weight:600;
  border:1px solid rgba(53,224,200,.4);background:var(--accent-soft);color:var(--accent);
}
.badge-warn{border-color:rgba(255,180,92,.45);background:rgba(255,180,92,.12);color:var(--warn);}
.article-hero h1{
  margin:16px 0 18px;max-width:900px;
  font-size:clamp(1.9rem,3.4vw,2.85rem);font-weight:800;line-height:1.35;letter-spacing:.01em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:var(--muted);}
.article-meta .dot{width:5px;height:5px;border-radius:50%;background:#35E0C8;opacity:.7;}
.article-meta b{color:#B9CDE6;font-weight:600;}

/* ============ layout ============ */
.article-section{padding:52px 0 64px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start;}
.panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px;
}
.article-main{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:34px 36px;
}
.article-body{font-size:16.5px;line-height:1.9;color:#CBDCEF;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  position:relative;margin:2.1em 0 .85em;padding-left:16px;
  font-size:clamp(1.3rem,2vw,1.6rem);font-weight:700;line-height:1.5;color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--accent),var(--primary));
  box-shadow:0 0 12px rgba(53,224,200,.5);
}
.article-body h3{margin:1.7em 0 .65em;font-size:1.16rem;font-weight:600;color:var(--text);}
.article-body h4{margin:1.4em 0 .5em;font-size:1.02rem;font-weight:600;color:#D7E6FA;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.45em 0;}
.article-body ul li::marker{color:var(--accent);}
.article-body ol li::marker{color:var(--accent);font-family:var(--font-num);}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--accent);
  background:rgba(53,224,200,.06);border-radius:0 12px 12px 0;color:#DCEBFF;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{color:#7CF3E2;}
.article-body img{width:auto;max-width:100%;height:auto;border-radius:14px;margin:1.4em 0;border:1px solid var(--line);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--muted);text-align:center;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.5em 0;font-size:14.5px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 15px;text-align:left;}
.article-body th{background:rgba(47,107,255,.12);color:var(--text);font-weight:600;}
.article-body tr:nth-child(even) td{background:rgba(120,200,255,.03);}
.article-body code{
  background:rgba(120,200,255,.1);border-radius:6px;padding:2px 6px;
  font-size:.9em;font-family:var(--font-num);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  padding:60px 24px;text-align:center;
  border:1px dashed rgba(120,200,255,.3);border-radius:var(--radius-lg);
  background:rgba(14,24,40,.62);backdrop-filter:blur(14px);
}
.empty-state svg{width:48px;height:48px;stroke:var(--accent);opacity:.8;}
.empty-state h2{font-size:1.25rem;font-weight:700;}
.empty-state p{color:var(--muted);font-size:14.5px;max-width:420px;}

/* sidebar */
.article-side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;}
.side-card h3{
  display:flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:700;color:var(--text);margin-bottom:14px;
}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent);}
.side-links{display:flex;flex-direction:column;gap:2px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14px;color:#B9CDE6;
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.side-links a:hover{background:rgba(120,200,255,.08);color:var(--text);transform:translateX(3px);}
.side-links a svg{width:14px;height:14px;stroke:var(--accent);flex:none;}
.side-note{font-size:13.5px;line-height:1.85;color:var(--muted);}
.side-note b{color:#C6D9F0;font-weight:600;}

/* ============ related cards ============ */
.section{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head .eyebrow{
  display:inline-block;font-size:11.5px;letter-spacing:.16em;font-weight:700;
  color:var(--accent);margin-bottom:12px;
}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2.05rem);font-weight:700;line-height:1.4;}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px;}
.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.entry-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.entry-card:hover{transform:translateY(-4px);border-color:rgba(53,224,200,.42);box-shadow:0 18px 40px rgba(0,0,0,.38);}
.entry-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.entry-card:hover .entry-thumb img{transform:scale(1.04);}
.entry-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,0) 40%,rgba(7,11,20,.72) 100%);
}
.entry-thumb .badge{position:absolute;left:14px;top:14px;z-index:2;background:rgba(7,11,20,.7);backdrop-filter:blur(6px);}
.entry-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.entry-body h3{font-size:1.05rem;font-weight:700;line-height:1.55;color:var(--text);}
.entry-body p{font-size:14px;line-height:1.8;color:var(--muted);flex:1;}
.entry-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--accent);}
.entry-card:hover .entry-more svg{transform:translateX(4px);}
.entry-more svg{width:14px;height:14px;stroke:var(--accent);transition:transform .22s ease;}

/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,11,20,.94),rgba(11,18,32,.86)),
             url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(53,224,200,.06) 0 2px,transparent 2px 12px);
  opacity:.5;
}
.cta-inner{position:relative;z-index:2;padding:60px 0;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;line-height:1.4;max-width:620px;}
.cta-inner p{margin-top:12px;color:var(--muted);font-size:15px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ footer ============ */
.site-footer{background:#050910;border-top:1px solid var(--line);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;padding-bottom:42px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-desc{font-size:13.5px;line-height:1.9;color:var(--muted);max-width:330px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:13.5px;color:var(--muted);transition:color .2s ease;}
.footer-col ul a:hover{color:var(--accent);}
.footer-col p{font-size:13.5px;line-height:1.9;color:var(--muted);margin-bottom:12px;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid rgba(120,200,255,.1);
  font-size:12.5px;color:#6B7E9B;
}

/* ============ responsive ============ */
@media (max-width:1080px){
  .search-box{width:170px;}
  .nav-links{gap:18px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:32px;}
}
@media (max-width:1024px){
  .nav-links,.search-box{display:none;}
  .nav-toggle{display:flex;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;top:auto;flex-direction:row;flex-wrap:wrap;}
  .article-side .side-card{flex:1 1 280px;}
  .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .header-inner{min-height:62px;gap:14px;}
  .brand-mark{width:32px;height:32px;}
  .brand-text b{font-size:14px;}
  .article-hero{padding:26px 0 34px;}
  .article-hero h1{margin:14px 0 16px;}
  .article-section{padding:34px 0 48px;}
  .article-main{padding:24px 20px;}
  .article-body{font-size:15.8px;}
  .section{padding:48px 0;}
  .entry-grid{grid-template-columns:minmax(0,1fr);}
  .cta-inner{padding:48px 0;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .brand-text b{font-size:13px;letter-spacing:0;}
  .brand-text span{font-size:10px;letter-spacing:.16em;}
  .header-actions .btn-sm{padding:8px 12px;font-size:12.5px;}
  .article-main{padding:20px 16px;}
  .article-body{font-size:15.4px;line-height:1.85;}
  .article-meta{gap:8px 14px;font-size:12.5px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg:#070B14;
  --bg-2:#0B1220;
  --surface:#0E1828;
  --surface-2:#101D31;
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,.16);
  --accent:#35E0C8;
  --warn:#FFB45C;
  --danger:#FF6B6B;
  --text:#E8F1FF;
  --muted:#8FA3BF;
  --border:rgba(120,200,255,.16);
  --border-strong:rgba(120,200,255,.34);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow:0 16px 40px rgba(0,0,0,.35);
  --num:"DIN Alternate","Bahnschrift","Arial Narrow",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 620px at 88% -12%, rgba(53,224,200,.10), transparent 62%),
    radial-gradient(720px 520px at 6% 6%, rgba(47,107,255,.14), transparent 66%),
    linear-gradient(rgba(120,200,255,.045) 1px, transparent 1px) 0 0/52px 52px,
    linear-gradient(90deg, rgba(120,200,255,.045) 1px, transparent 1px) 0 0/52px 52px;
}
header,main,footer{position:relative;z-index:1;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px;}

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

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(7,11,20,.80);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{width:36px;height:36px;flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text b{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--text);}
.brand-text span{font-size:11px;font-weight:600;letter-spacing:.22em;color:var(--accent);}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:6px;
}
.nav-links a{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--muted);
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--text);background:rgba(120,200,255,.08);}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:-10px;
  height:2px;border-radius:2px;
  background:var(--accent);
  box-shadow:0 0 10px rgba(53,224,200,.7);
}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-search{position:relative;}
.nav-search svg{
  position:absolute;
  left:11px;top:50%;
  transform:translateY(-50%);
  width:15px;height:15px;
  color:var(--muted);
  pointer-events:none;
}
.nav-search input{
  width:196px;
  padding:9px 12px 9px 33px;
  font-size:13.5px;
  color:var(--text);
  background:var(--bg-2);
  border:1px solid var(--border);
  border-radius:10px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input::placeholder{color:#617591;}
.nav-search input:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(53,224,200,.16);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(180deg,#3f7bff,#2F6BFF);
  box-shadow:inset 0 0 0 1px rgba(53,224,200,.35),0 10px 26px rgba(47,107,255,.26);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:inset 0 0 0 1px rgba(53,224,200,.6),0 14px 32px rgba(47,107,255,.38);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  color:var(--text);
  background:transparent;
  border-color:var(--border);
}
.btn-ghost:hover{
  transform:translateY(-2px);
  border-color:rgba(53,224,200,.52);
  background:rgba(53,224,200,.08);
}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:10px;
  color:var(--text);
  background:rgba(120,200,255,.07);
  border:1px solid var(--border);
  cursor:pointer;
}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--border);
  background:rgba(7,11,20,.97);
  padding:16px 0 22px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer .drawer-links{display:grid;gap:6px;margin-bottom:14px;}
.mobile-drawer .drawer-links a{
  padding:11px 14px;
  font-size:15px;
  border-radius:10px;
  color:var(--muted);
  border:1px solid transparent;
}
.mobile-drawer .drawer-links a:hover{color:var(--text);background:rgba(120,200,255,.07);}
.mobile-drawer .drawer-links a.active{
  color:#fff;
  background:rgba(53,224,200,.10);
  border-color:rgba(53,224,200,.34);
}
.mobile-drawer .nav-search input{width:100%;}

/* ===== 通用板块 ===== */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;
  border-radius:2px;
  background:var(--accent);
}
h1,h2,h3{line-height:1.3;font-weight:800;}
.section-title{
  font-size:clamp(1.6rem,2.4vw,2.2rem);
  font-weight:700;
  margin-bottom:12px;
}
.section-sub{
  color:var(--muted);
  font-size:15px;
  max-width:62ch;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 11px;
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.06em;
  border-radius:999px;
  border:1px solid var(--border);
  color:var(--muted);
  background:rgba(120,200,255,.06);
  white-space:nowrap;
}
.tag-accent{color:var(--accent);border-color:rgba(53,224,200,.36);background:rgba(53,224,200,.10);}
.tag-warn{color:var(--warn);border-color:rgba(255,180,92,.36);background:rgba(255,180,92,.10);}
.tag-primary{color:#9DBBFF;border-color:rgba(47,107,255,.42);background:rgba(47,107,255,.14);}

/* ===== Hero ===== */
.hero{padding:56px 0 68px;}
.hero-split{
  display:grid;
  grid-template-columns:1.32fr 1fr;
  gap:48px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2rem,3.6vw,3.1rem);
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero h1 .hl{
  color:var(--accent);
}
.hero-lead{
  font-size:16.5px;
  color:#B9CAE3;
  max-width:56ch;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  font-size:13px;
  color:#C6D6EC;
  border-radius:999px;
  border:1px solid var(--border);
  background:rgba(14,24,40,.72);
}
.chip::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 8px rgba(53,224,200,.8);
}
.hero-visual{
  position:relative;
  min-height:452px;
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--border-strong);
  box-shadow:var(--shadow);
  isolation:isolate;
}
.hero-visual img{
  position:absolute;
  inset:0;
  width:100%;height:100%;
  object-fit:cover;
  object-position:center 32%;
  transform:scale(1.02);
}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg, rgba(7,11,20,.24) 0%, rgba(7,11,20,.62) 58%, rgba(7,11,20,.94) 100%),
    linear-gradient(90deg, rgba(7,11,20,.72) 0%, rgba(7,11,20,0) 62%);
}
.hero-visual .corner-scale{
  position:absolute;
  top:16px;right:16px;
  width:64px;height:64px;
  border-top:2px solid rgba(53,224,200,.6);
  border-right:2px solid rgba(53,224,200,.6);
  border-radius:0 12px 0 0;
  z-index:2;
}
.hud-card{
  position:absolute;
  left:18px;right:18px;bottom:18px;
  z-index:3;
  padding:18px 20px;
  border-radius:16px;
  background:rgba(14,24,40,.66);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(120,200,255,.22);
  box-shadow:0 16px 40px rgba(0,0,0,.35);
}
.hud-card h2{
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--accent);
  margin-bottom:12px;
}
.hud-list{display:grid;gap:9px;}
.hud-list div{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:14px;
  padding-bottom:9px;
  border-bottom:1px dashed rgba(120,200,255,.16);
}
.hud-list div:last-child{border-bottom:0;padding-bottom:0;}
.hud-list dt{font-size:13px;color:var(--muted);}
.hud-list dd{font-size:13.5px;font-weight:600;color:var(--text);}
.hud-list dd.num{font-family:var(--num);letter-spacing:.04em;}
.hud-list dd.ok{color:var(--accent);}

/* ===== 时间轴 ===== */
.timeline-wrap{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:44px;
  align-items:start;
}
.side-note{
  border-radius:var(--r-lg);
  border:1px solid var(--border);
  background:var(--surface);
  overflow:hidden;
  margin-top:26px;
}
.side-note img{
  width:100%;
  height:190px;
  object-fit:cover;
}
.side-note .side-note-body{padding:18px 20px;}
.side-note h3{font-size:15px;font-weight:600;margin-bottom:8px;}
.side-note p{font-size:13.5px;color:var(--muted);}
.timeline{display:grid;gap:0;}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:56px 1fr;
  gap:20px;
  padding-bottom:30px;
}
.tl-item::before{
  content:"";
  position:absolute;
  left:27px;top:58px;bottom:0;
  width:2px;
  background:linear-gradient(180deg,rgba(53,224,200,.45),rgba(120,200,255,.06));
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{display:none;}
.tl-index{
  width:56px;height:56px;
  display:grid;
  place-items:center;
  font-family:var(--num);
  font-size:18px;
  font-weight:700;
  color:var(--accent);
  border-radius:16px;
  background:rgba(53,224,200,.08);
  border:1px solid rgba(53,224,200,.30);
}
.tl-body h3{
  font-size:1.15rem;
  font-weight:600;
  margin-bottom:8px;
}
.tl-body p{font-size:14.5px;color:var(--muted);}

/* ===== 更新记录 ===== */
.log-panel{
  border-radius:var(--r-lg);
  border:1px solid var(--border);
  background:var(--surface);
  overflow:hidden;
}
.log-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 24px;
  border-bottom:1px solid var(--border);
  background:linear-gradient(180deg,rgba(47,107,255,.10),rgba(47,107,255,0));
}
.log-head h2{font-size:1.15rem;font-weight:700;}
.log-head p{font-size:13px;color:var(--muted);}
.log-item{
  display:grid;
  grid-template-columns:96px 1fr 24px;
  gap:22px;
  align-items:start;
  padding:22px 24px;
  border-bottom:1px solid rgba(120,200,255,.10);
  transition:background .22s ease;
}
.log-item:last-child{border-bottom:0;}
.log-item:hover{background:rgba(120,200,255,.045);}
.log-date{
  font-family:var(--num);
  font-size:15px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:.04em;
  padding-top:2px;
}
.log-title{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:7px;
}
.log-title h3{font-size:1.02rem;font-weight:600;}
.log-body p{font-size:14px;color:var(--muted);}
.log-arrow{
  color:var(--muted);
  font-size:18px;
  line-height:1.4;
  transition:transform .22s ease,color .22s ease;
}
.log-item:hover .log-arrow{transform:translateX(4px);color:var(--accent);}

/* ===== 使用提示 ===== */
.tips-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:start;
}
.tips-text p{color:var(--muted);font-size:15px;margin-bottom:14px;}
.tips-card{
  border-radius:var(--r-lg);
  border:1px solid var(--border);
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  padding:26px 26px 22px;
}
.tips-card h3{
  font-size:1rem;
  font-weight:600;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:9px;
}
.tips-card h3::before{
  content:"";
  width:3px;height:16px;
  border-radius:2px;
  background:var(--accent);
}
.tips-list{display:grid;gap:14px;}
.tips-list li{
  display:grid;
  grid-template-columns:22px 1fr;
  gap:12px;
  font-size:14.5px;
  color:#B9CAE3;
}
.tips-list li span{
  display:grid;
  place-items:center;
  width:22px;height:22px;
  margin-top:3px;
  font-size:12px;
  font-weight:700;
  color:var(--accent);
  border-radius:50%;
  background:rgba(53,224,200,.12);
  border:1px solid rgba(53,224,200,.34);
}

/* ===== 底部 CTA ===== */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:24px;
  border:1px solid var(--border-strong);
  background:
    radial-gradient(600px 300px at 82% 10%, rgba(53,224,200,.16), transparent 62%),
    linear-gradient(120deg,#0d1b31 0%,#0a1526 48%,#0d1b31 100%);
  padding:44px 44px;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,200,.7),transparent);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-70px;bottom:-90px;
  width:280px;height:280px;
  border-radius:50%;
  border:1px dashed rgba(53,224,200,.24);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:clamp(1.4rem,2.2vw,1.9rem);
  font-weight:700;
  margin-bottom:10px;
}
.cta-inner p{color:var(--muted);font-size:15px;max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:8px;
  padding-top:56px;
  background:#050910;
  border-top:1px solid var(--border);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-desc{font-size:13.5px;color:var(--muted);max-width:34ch;}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  font-size:13.5px;
  color:var(--muted);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:13.5px;color:var(--muted);margin-bottom:12px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 28px;
  border-top:1px solid rgba(120,200,255,.10);
  font-size:12.5px;
  color:#71839c;
}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-search{display:none;}
  .menu-toggle{display:inline-flex;}
  .hero-split{grid-template-columns:1fr;gap:34px;}
  .hero{padding:40px 0 52px;}
  .hero-visual{min-height:380px;}
  .timeline-wrap{grid-template-columns:1fr;gap:32px;}
  .tips-grid{grid-template-columns:1fr;gap:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .header-inner{height:64px;gap:12px;}
  .brand-text b{font-size:15px;}
  .brand-text span{font-size:10px;}
  .header-actions .btn-sm{display:none;}
  .section{padding:52px 0;}
  .section-tight{padding:42px 0;}
  .hero h1{font-size:clamp(1.75rem,7vw,2.3rem);}
  .hero-lead{font-size:15.5px;}
  .hero-visual{min-height:340px;}
  .hud-card{left:12px;right:12px;bottom:12px;padding:15px 16px;}
  .log-item{grid-template-columns:1fr;gap:8px;padding:20px 18px;}
  .log-arrow{display:none;}
  .log-head{padding:18px;}
  .cta-band{padding:30px 22px;border-radius:18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:519px){
  .tl-item{grid-template-columns:44px 1fr;gap:14px;}
  .tl-index{width:44px;height:44px;font-size:15px;border-radius:13px;}
  .tl-item::before{left:21px;top:46px;}
  .chip{padding:6px 11px;font-size:12.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
    --bg:#070B14;
    --bg-2:#0B1220;
    --surface:#0E1828;
    --primary:#2F6BFF;
    --cyan:#35E0C8;
    --warm:#FFB45C;
    --text:#E8F1FF;
    --muted:#8FA3BF;
    --line:rgba(120,200,255,.16);
    --line-strong:rgba(120,200,255,.34);
    --radius-lg:20px;
    --radius-md:14px;
    --radius-sm:10px;
    --shadow:0 16px 40px rgba(0,0,0,.35);
    --num-font:"DIN Alternate","Bahnschrift","Arial Narrow",Arial,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;scroll-padding-top:96px;}
  body{
    margin:0;
    background-color:var(--bg);
    background-image:
      radial-gradient(900px 520px at 88% -6%, rgba(47,107,255,.20), transparent 62%),
      radial-gradient(720px 460px at 2% 8%, rgba(53,224,200,.09), transparent 60%);
    background-repeat:no-repeat;
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
  h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  dl,dt,dd{margin:0;}
  :focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

  /* ---------- 品牌 ---------- */
  .brand{display:inline-flex;align-items:center;gap:12px;}
  .brand-mark{width:38px;height:38px;flex:0 0 auto;}
  .brand-text{display:flex;flex-direction:column;line-height:1.2;}
  .brand-text b{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--text);}
  .brand-text span{font-size:12px;letter-spacing:.18em;color:var(--muted);}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(7,11,20,.84);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
  .nav-links{display:flex;align-items:center;gap:6px;}
  .nav-links a{
    position:relative;
    padding:9px 14px;
    border-radius:10px;
    font-size:14px;
    color:var(--muted);
    white-space:nowrap;
    transition:color .2s ease,background-color .2s ease;
  }
  .nav-links a:hover{color:var(--text);background:rgba(47,107,255,.12);}
  .nav-links a.active{color:#fff;background:rgba(47,107,255,.18);box-shadow:inset 0 -2px 0 var(--cyan);}
  .nav-links a.active:hover{background:rgba(47,107,255,.24);}

  /* ---------- 通用按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:10px;
    padding:13px 24px;border-radius:12px;font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;
    transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,filter .2s ease;
  }
  .btn-primary{
    background:linear-gradient(180deg,#3C79FF,#2F6BFF);
    color:#fff;
    border-color:rgba(53,224,200,.55);
    box-shadow:0 10px 26px rgba(47,107,255,.32),inset 0 1px 0 rgba(255,255,255,.16);
  }
  .btn-primary:hover{
    transform:translateY(-2px);
    filter:brightness(1.06);
    box-shadow:0 16px 34px rgba(47,107,255,.44),inset 0 1px 0 rgba(255,255,255,.22);
  }
  .btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(47,107,255,.30);}
  .btn-ghost{
    background:transparent;border-color:var(--line-strong);color:var(--text);
  }
  .btn-ghost:hover{background:rgba(53,224,200,.10);border-color:rgba(53,224,200,.55);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-block{width:100%;}

  /* ---------- 页面头部 ---------- */
  .page-head{
    position:relative;
    overflow:hidden;
    padding:60px 0 52px;
    border-bottom:1px solid var(--line);
    background-image:
      linear-gradient(180deg,rgba(7,11,20,.70),rgba(7,11,20,.96)),
      url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center 30%;
  }
  .page-head::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(120,200,255,.07) 1px,transparent 1px),
      linear-gradient(90deg,rgba(120,200,255,.07) 1px,transparent 1px);
    background-size:64px 64px;
    -webkit-mask-image:radial-gradient(circle at 84% 12%,#000,transparent 72%);
    mask-image:radial-gradient(circle at 84% 12%,#000,transparent 72%);
  }
  .page-head .container{position:relative;z-index:1;}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;}
  .breadcrumb a:hover{color:var(--cyan);}
  .breadcrumb .sep{color:rgba(143,163,191,.5);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.16em;
    color:var(--cyan);
    border:1px solid rgba(53,224,200,.32);
    background:rgba(53,224,200,.08);
    padding:5px 13px;border-radius:999px;margin-bottom:18px;
  }
  .page-head h1{
    font-size:clamp(2rem,3.6vw,3.05rem);
    font-weight:800;
    max-width:20ch;
  }
  .page-head .lede{
    margin-top:18px;max-width:62ch;
    color:var(--muted);font-size:16px;line-height:1.9;
  }
  .anchor-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
  .anchor-row a{
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 15px;border-radius:999px;
    border:1px solid var(--line);
    background:rgba(14,24,40,.72);
    font-size:13px;color:var(--muted);
    transition:transform .2s ease,color .2s ease,border-color .2s ease,background-color .2s ease;
  }
  .anchor-row a span{font-family:var(--num-font);font-size:12px;color:var(--cyan);letter-spacing:.06em;}
  .anchor-row a:hover{color:var(--text);border-color:rgba(53,224,200,.48);background:rgba(53,224,200,.08);transform:translateY(-2px);}

  /* ---------- 板块 ---------- */
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .section-head{max-width:720px;margin-bottom:40px;}
  .section-head h2{font-size:clamp(1.6rem,2.4vw,2.15rem);font-weight:700;}
  .section-head p{margin-top:14px;color:var(--muted);}

  /* ---------- 规则行 ---------- */
  .rule-list{display:flex;flex-direction:column;}
  .rule-row{
    display:grid;grid-template-columns:1fr 1fr;
    gap:48px;align-items:center;
    padding:44px 0;
    border-top:1px solid var(--line);
  }
  .rule-row:last-child{border-bottom:1px solid var(--line);}
  .rule-num{
    display:block;
    font-family:var(--num-font);
    font-size:42px;line-height:1;
    letter-spacing:.04em;
    color:transparent;
    -webkit-text-stroke:1px rgba(53,224,200,.62);
    margin-bottom:16px;
  }
  .rule-body h3{font-size:clamp(1.2rem,1.8vw,1.45rem);font-weight:700;margin-bottom:14px;}
  .rule-body p{color:var(--muted);margin-bottom:12px;font-size:15px;line-height:1.9;}
  .rule-points{display:flex;flex-direction:column;gap:9px;margin-top:18px;}
  .rule-points li{position:relative;padding-left:20px;font-size:14px;color:#BACBDF;line-height:1.75;}
  .rule-points li::before{
    content:"";position:absolute;left:0;top:9px;
    width:7px;height:7px;border-radius:2px;
    background:var(--cyan);transform:rotate(45deg);
  }
  .rule-media{
    position:relative;overflow:hidden;
    border-radius:var(--radius-lg);
    border:1px solid var(--line);
    background:var(--surface);
    box-shadow:0 12px 30px rgba(0,0,0,.28);
  }
  .rule-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .3s ease;}
  .rule-media:hover img{transform:scale(1.03);}
  .rule-media::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(180deg,rgba(7,11,20,0) 48%,rgba(7,11,20,.78));
  }
  .rule-media .media-tag{
    position:absolute;left:16px;bottom:16px;z-index:2;
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 13px;border-radius:999px;
    font-size:12px;letter-spacing:.08em;
    color:#DFF7F2;
    background:rgba(14,24,40,.62);
    border:1px solid rgba(53,224,200,.35);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  }
  .rule-row:nth-child(even) .rule-media{order:-1;}

  /* ---------- 术语表 ---------- */
  .term-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  .term-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    padding:20px 22px;
    transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .term-card:hover{transform:translateY(-3px);border-color:rgba(53,224,200,.42);box-shadow:0 12px 26px rgba(0,0,0,.28);}
  .term-card dt{
    display:flex;align-items:baseline;gap:10px;
    font-size:16px;font-weight:700;color:var(--text);margin-bottom:8px;
  }
  .term-card dt span{font-family:var(--num-font);font-size:12px;letter-spacing:.08em;color:var(--cyan);}
  .term-card dd{font-size:14px;line-height:1.85;color:var(--muted);}

  /* ---------- 提示框 ---------- */
  .notice{
    display:grid;grid-template-columns:auto 1fr;gap:20px;
    padding:26px 28px;border-radius:var(--radius-lg);
    border:1px solid rgba(255,180,92,.34);
    background:linear-gradient(180deg,rgba(255,180,92,.11),rgba(255,180,92,.03));
  }
  .notice-icon{
    width:46px;height:46px;border-radius:13px;
    display:grid;place-items:center;flex:0 0 auto;
    background:rgba(255,180,92,.14);
    border:1px solid rgba(255,180,92,.36);
  }
  .notice h3{font-size:1.05rem;font-weight:700;color:#FFD9A8;margin-bottom:12px;}
  .notice-list{display:grid;gap:10px;}
  .notice-list li{
    position:relative;padding-left:18px;
    font-size:14px;line-height:1.85;color:rgba(232,241,255,.86);
  }
  .notice-list li::before{
    content:"";position:absolute;left:0;top:10px;
    width:7px;height:7px;border-radius:50%;background:var(--warm);
  }
  .notice-foot{margin-top:16px;font-size:13px;color:rgba(255,180,92,.86);}
  .notice-foot a{color:#FFD9A8;border-bottom:1px solid rgba(255,180,92,.45);padding-bottom:1px;}
  .notice-foot a:hover{border-color:#FFD9A8;}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    display:flex;align-items:center;justify-content:space-between;gap:36px;
    padding:52px 48px;border-radius:24px;
    border:1px solid var(--line-strong);
    background:linear-gradient(120deg,rgba(47,107,255,.26),rgba(14,24,40,.94) 58%);
    box-shadow:var(--shadow);
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(115deg,rgba(53,224,200,.10) 0 1px,transparent 1px 24px);
    opacity:.55;
  }
  .cta-band > *{position:relative;z-index:1;}
  .cta-band h2{font-size:clamp(1.4rem,2.2vw,1.9rem);font-weight:700;max-width:22ch;}
  .cta-band p{margin-top:12px;color:var(--muted);font-size:15px;max-width:46ch;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:#050910;
    border-top:1px solid var(--line);
    padding:64px 0 0;
    margin-top:80px;
  }
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
  .footer-brand .brand{margin-bottom:2px;}
  .footer-desc{margin-top:16px;max-width:38ch;font-size:14px;line-height:1.9;color:var(--muted);}
  .footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text);margin-bottom:16px;}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col p{font-size:14px;line-height:1.85;color:var(--muted);}
  .footer-col a{font-size:14px;color:var(--muted);}
  .footer-col a:hover{color:var(--cyan);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    padding:20px 0;
    border-top:1px solid var(--line);
    font-size:13px;color:var(--muted);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .rule-row{grid-template-columns:1fr;gap:28px;padding:38px 0;}
    .rule-row:nth-child(even) .rule-media{order:0;}
    .rule-media img{aspect-ratio:16/10;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  }
  @media (max-width:900px){
    .nav-inner{flex-wrap:wrap;height:auto;padding:12px 0;row-gap:10px;}
    .nav-links{width:100%;overflow-x:auto;padding-bottom:2px;scrollbar-width:none;-ms-overflow-style:none;}
    .nav-links::-webkit-scrollbar{height:0;}
  }
  @media (max-width:768px){
    .section{padding:56px 0;}
    .section-tight{padding:44px 0;}
    .term-grid{grid-template-columns:1fr;}
    .page-head{padding:44px 0 40px;}
    .notice{grid-template-columns:1fr;gap:16px;padding:22px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
  }
  @media (max-width:520px){
    .container{padding:0 16px;}
    .brand-mark{width:34px;height:34px;}
    .brand-text b{font-size:15px;}
    .brand-text span{font-size:11px;letter-spacing:.14em;}
    .rule-num{font-size:34px;}
    .cta-band{padding:32px 22px;border-radius:20px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;gap:8px;}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
    .rule-media:hover img,.term-card:hover,.anchor-row a:hover,.btn:hover{transform:none;}
  }

/* roulang page: category3 */
:root{
    --bg:#070B14;
    --bg2:#0B1220;
    --surface:#0E1828;
    --surface-2:#101C30;
    --blue:#2F6BFF;
    --cyan:#35E0C8;
    --orange:#FFB45C;
    --text:#E8F1FF;
    --muted:#8FA3BF;
    --line:rgba(120,200,255,.16);
    --line-strong:rgba(120,200,255,.32);
    --r-lg:20px;
    --r-md:14px;
    --r-sm:10px;
    --shadow:0 16px 40px rgba(0,0,0,.35);
    --maxw:1240px;
    --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    --font-num:"DIN Alternate","Bahnschrift","Arial Narrow",Arial,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.8;
    color:var(--text);
    background-color:var(--bg);
    background-image:
      radial-gradient(900px 620px at 88% -8%, rgba(47,107,255,.20), transparent 62%),
      radial-gradient(720px 520px at 2% 12%, rgba(53,224,200,.08), transparent 66%),
      linear-gradient(rgba(120,200,255,.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(120,200,255,.045) 1px, transparent 1px);
    background-size:auto, auto, 48px 48px, 48px 48px;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  input,textarea,select{font-family:inherit;font-size:15px;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  .container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
  .num{font-family:var(--font-num);letter-spacing:.02em;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:12px;border:1px solid transparent;
    font-size:15px;font-weight:600;line-height:1.4;cursor:pointer;
    transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
  }
  .btn-primary{
    background:linear-gradient(180deg,#3A78FF,#2F6BFF);
    color:#F5FAFF;border-color:rgba(53,224,200,.45);
    box-shadow:0 0 0 1px rgba(53,224,200,.16) inset,0 10px 24px rgba(47,107,255,.28);
  }
  .btn-primary:hover{transform:translateY(-2px);background:linear-gradient(180deg,#4A85FF,#3A78FF);box-shadow:0 0 0 1px rgba(53,224,200,.32) inset,0 14px 30px rgba(47,107,255,.4);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    background:rgba(14,24,40,.6);color:var(--text);border-color:var(--line);
  }
  .btn-ghost:hover{background:rgba(53,224,200,.08);border-color:rgba(53,224,200,.45);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
  .btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
    outline:2px solid var(--cyan);outline-offset:3px;
  }

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 11px;border-radius:999px;font-size:11px;font-weight:600;
    letter-spacing:.08em;line-height:1.6;border:1px solid var(--line);
    color:var(--muted);background:rgba(14,24,40,.7);
  }
  .badge-cyan{color:var(--cyan);border-color:rgba(53,224,200,.4);background:rgba(53,224,200,.08);}
  .badge-orange{color:var(--orange);border-color:rgba(255,180,92,.42);background:rgba(255,180,92,.09);}
  .badge-blue{color:#9FC0FF;border-color:rgba(47,107,255,.45);background:rgba(47,107,255,.14);}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(7,11,20,.82);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .nav-wrap{
    max-width:var(--maxw);margin:0 auto;padding:0 24px;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    min-height:70px;
  }
  .nav-content{display:flex;align-items:center;gap:28px;flex:7 1 0%;min-width:0;}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{width:34px;height:34px;flex-shrink:0;}
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text b{font-size:15px;font-weight:800;letter-spacing:.02em;color:var(--text);}
  .brand-text span{font-size:11px;letter-spacing:.22em;color:var(--cyan);}
  .nav-links{display:flex;align-items:center;gap:4px;}
  .nav-links a{
    position:relative;padding:8px 12px;border-radius:8px;
    font-size:14.5px;color:var(--muted);font-weight:500;
    transition:color .2s ease,background .2s ease;
  }
  .nav-links a:hover{color:var(--text);background:rgba(120,200,255,.07);}
  .nav-links a.active{color:var(--text);font-weight:700;}
  .nav-links a.active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;
    background:var(--cyan);border-radius:2px;box-shadow:0 0 10px rgba(53,224,200,.7);
  }
  .nav-aside{display:flex;align-items:center;gap:12px;flex:5 1 0%;justify-content:flex-end;min-width:0;}
  .nav-search{
    display:flex;align-items:center;gap:8px;
    background:rgba(11,18,32,.9);border:1px solid var(--line);
    border-radius:10px;padding:7px 12px;width:200px;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .nav-search:focus-within{border-color:rgba(53,224,200,.55);box-shadow:0 0 0 3px rgba(53,224,200,.12);}
  .nav-search svg{width:15px;height:15px;flex-shrink:0;color:var(--muted);}
  .nav-search input{
    background:transparent;border:0;outline:none;color:var(--text);
    font-size:13.5px;width:100%;padding:0;
  }
  .nav-search input::placeholder{color:#6E82A0;}
  .menu-btn{
    display:none;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:10px;
    background:rgba(14,24,40,.8);border:1px solid var(--line);color:var(--text);cursor:pointer;
  }
  .mobile-drawer{
    display:none;border-top:1px solid var(--line);
    background:rgba(7,11,20,.97);padding:14px 24px 20px;
  }
  .mobile-drawer.open{display:block;}
  .mobile-drawer a{
    display:block;padding:11px 4px;font-size:15px;color:var(--muted);
    border-bottom:1px solid rgba(120,200,255,.08);
  }
  .mobile-drawer a.active{color:var(--cyan);font-weight:700;}
  .mobile-drawer .drawer-search{
    display:flex;align-items:center;gap:8px;margin-top:14px;
    background:rgba(11,18,32,.9);border:1px solid var(--line);
    border-radius:10px;padding:9px 12px;
  }
  .mobile-drawer .drawer-search input{background:transparent;border:0;outline:none;color:var(--text);width:100%;font-size:14px;}

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
  .hero::before{
    content:"";position:absolute;inset:0;
    background-image:url("/assets/images/backpic/back-1.png");
    background-size:cover;background-position:center right;
    opacity:.42;
  }
  .hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(7,11,20,.97) 0%,rgba(7,11,20,.90) 46%,rgba(7,11,20,.52) 100%);
  }
  .hero-inner{
    position:relative;z-index:2;
    display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;
    padding:64px 0 72px;min-height:560px;
  }
  .hero-copy{max-width:600px;}
  .hero-eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:18px;flex-wrap:wrap;}
  .hero h1{
    font-size:clamp(2.15rem,4vw,3.4rem);font-weight:800;line-height:1.22;
    letter-spacing:-.01em;margin-bottom:18px;
  }
  .hero h1 em{font-style:normal;color:var(--cyan);}
  .hero-sub{font-size:16.5px;color:#B9CBDD;line-height:1.85;max-width:560px;margin-bottom:26px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
  .hero-chips{display:flex;flex-wrap:wrap;gap:10px;}
  .chip{
    display:inline-flex;align-items:center;gap:7px;
    padding:6px 13px;border-radius:999px;font-size:12.5px;color:#AFC3DA;
    border:1px solid var(--line);background:rgba(11,18,32,.62);
  }
  .chip i{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:inline-block;}

  .glass-card{
    background:rgba(14,24,40,.62);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border:1px solid rgba(120,200,255,.18);
    box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
    border-radius:var(--r-lg);
  }
  .progress-card{padding:24px 22px;}
  .progress-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
  .progress-head h2{font-size:16px;font-weight:700;}
  .progress-list{display:flex;flex-direction:column;gap:0;}
  .progress-item{display:flex;gap:14px;padding:10px 0;position:relative;}
  .progress-item:not(:last-child)::before{
    content:"";position:absolute;left:11px;top:34px;bottom:-2px;width:1px;
    background:rgba(120,200,255,.2);
  }
  .step-dot{
    width:23px;height:23px;border-radius:50%;flex-shrink:0;margin-top:5px;
    display:flex;align-items:center;justify-content:center;
    border:1px solid rgba(120,200,255,.35);background:rgba(11,18,32,.9);
    font-size:11px;font-family:var(--font-num);color:var(--muted);
  }
  .step-dot.done{background:rgba(53,224,200,.18);border-color:rgba(53,224,200,.6);color:var(--cyan);}
  .step-dot.current{
    background:rgba(53,224,200,.22);border-color:var(--cyan);color:var(--cyan);
    box-shadow:0 0 0 4px rgba(53,224,200,.14),0 0 14px rgba(53,224,200,.5);
  }
  .progress-item h3{font-size:14.5px;font-weight:600;margin-bottom:2px;}
  .progress-item p{font-size:12.5px;color:var(--muted);line-height:1.7;}
  .progress-foot{
    margin-top:16px;padding-top:14px;border-top:1px solid rgba(120,200,255,.12);
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    font-size:12.5px;color:var(--muted);
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .section-head{max-width:780px;margin-bottom:36px;}
  .section-head h2{
    font-size:clamp(1.7rem,2.6vw,2.35rem);font-weight:700;line-height:1.35;margin-bottom:14px;
  }
  .section-head p{color:var(--muted);font-size:15.5px;line-height:1.85;}
  .section-kicker{
    display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
    font-size:12px;letter-spacing:.14em;color:var(--cyan);font-weight:600;
  }
  .section-kicker::before{content:"";width:22px;height:2px;background:var(--cyan);border-radius:2px;}

  /* ---------- 奖励阶梯 ---------- */
  .ladder-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:22px;align-items:stretch;}
  .reward-hero{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    border:1px solid rgba(255,180,92,.22);min-height:360px;
    display:flex;flex-direction:column;justify-content:flex-end;
    padding:26px;box-shadow:var(--shadow);isolation:isolate;
  }
  .reward-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;}
  .reward-hero::after{
    content:"";position:absolute;inset:0;z-index:-1;
    background:linear-gradient(180deg,rgba(7,11,20,.12) 0%,rgba(7,11,20,.78) 58%,rgba(7,11,20,.96) 100%);
  }
  .reward-hero h3{font-size:clamp(1.3rem,2vw,1.65rem);font-weight:700;margin:12px 0 10px;}
  .reward-hero p{font-size:14px;color:#B9CBDD;line-height:1.8;max-width:420px;margin-bottom:16px;}
  .reward-meta{display:flex;flex-wrap:wrap;gap:10px;}
  .reward-side{display:grid;grid-template-rows:repeat(3,1fr);gap:18px;}
  .reward-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
    padding:18px 20px;display:flex;flex-direction:column;justify-content:center;gap:8px;
    transition:transform .22s ease,border-color .22s ease,background .22s ease;
  }
  .reward-card:hover{transform:translateY(-3px);border-color:rgba(53,224,200,.4);background:var(--surface-2);}
  .reward-card .rc-top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
  .reward-card h4{font-size:15.5px;font-weight:600;}
  .reward-card p{font-size:13px;color:var(--muted);line-height:1.7;}

  /* ---------- 任务步骤条 ---------- */
  .task-band{
    background:linear-gradient(180deg,rgba(14,24,40,.9),rgba(11,18,32,.7));
    border:1px solid var(--line);border-radius:var(--r-lg);
    padding:30px 28px 26px;
  }
  .task-band-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap;}
  .task-band-head h3{font-size:1.2rem;font-weight:700;margin-bottom:6px;}
  .task-band-head p{font-size:13.5px;color:var(--muted);}
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative;}
  .steps::before{
    content:"";position:absolute;top:19px;left:6%;right:6%;height:1px;
    background:linear-gradient(90deg,rgba(53,224,200,.6),rgba(120,200,255,.2) 55%,rgba(120,200,255,.14));
  }
  .step{position:relative;text-align:left;}
  .step .bullet{
    width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    background:var(--bg2);border:1px solid rgba(120,200,255,.3);
    font-family:var(--font-num);font-size:14px;color:var(--muted);margin-bottom:12px;position:relative;z-index:1;
  }
  .step.done .bullet{background:rgba(53,224,200,.16);border-color:rgba(53,224,200,.55);color:var(--cyan);}
  .step.current .bullet{
    background:rgba(53,224,200,.2);border-color:var(--cyan);color:#DFFFFA;
    box-shadow:0 0 0 5px rgba(53,224,200,.12),0 0 16px rgba(53,224,200,.45);
  }
  .step h4{font-size:14.5px;font-weight:600;margin-bottom:5px;}
  .step p{font-size:12.5px;color:var(--muted);line-height:1.7;}

  /* ---------- 说明手风琴 ---------- */
  .acc-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .acc-item{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
    overflow:hidden;transition:border-color .2s ease,background .2s ease;
  }
  .acc-item[open]{border-color:rgba(53,224,200,.42);background:rgba(53,224,200,.06);}
  .acc-item summary{
    list-style:none;cursor:pointer;padding:17px 20px;
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    font-size:15px;font-weight:600;color:var(--text);
  }
  .acc-item summary::-webkit-details-marker{display:none;}
  .acc-item summary .plus{
    position:relative;width:16px;height:16px;flex-shrink:0;transition:transform .22s ease;
  }
  .acc-item summary .plus::before,
  .acc-item summary .plus::after{
    content:"";position:absolute;background:var(--cyan);border-radius:2px;
  }
  .acc-item summary .plus::before{left:0;top:7px;width:16px;height:2px;}
  .acc-item summary .plus::after{left:7px;top:0;width:2px;height:16px;transition:opacity .22s ease;}
  .acc-item[open] summary .plus{transform:rotate(180deg);}
  .acc-item[open] summary .plus::after{opacity:0;}
  .acc-body{padding:0 20px 18px;font-size:14px;color:#AFC3DA;line-height:1.85;}

  /* ---------- 提示框 ---------- */
  .notice{
    display:flex;gap:14px;padding:20px 22px;border-radius:var(--r-md);
    border:1px solid rgba(255,180,92,.28);background:rgba(255,180,92,.07);
  }
  .notice svg{width:22px;height:22px;flex-shrink:0;color:var(--orange);margin-top:3px;}
  .notice h4{font-size:15px;font-weight:700;color:#FFD9A8;margin-bottom:6px;}
  .notice p{font-size:13.5px;color:#C9D6E6;line-height:1.8;}

  /* ---------- 场景列表 ---------- */
  .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .scene-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
    padding:22px;transition:transform .22s ease,border-color .22s ease;
  }
  .scene-card:hover{transform:translateY(-3px);border-color:rgba(53,224,200,.38);}
  .scene-card .ic{
    width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;
    background:rgba(47,107,255,.16);border:1px solid rgba(47,107,255,.34);margin-bottom:14px;color:var(--cyan);
  }
  .scene-card h4{font-size:15.5px;font-weight:600;margin-bottom:8px;}
  .scene-card p{font-size:13.5px;color:var(--muted);line-height:1.8;}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:900px;}
  .faq-item{
    border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);
    margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,background .2s ease;
  }
  .faq-item[open]{border-color:rgba(53,224,200,.4);background:rgba(53,224,200,.05);}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:18px 22px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:15.5px;font-weight:600;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary .plus{position:relative;width:16px;height:16px;flex-shrink:0;transition:transform .22s ease;}
  .faq-item summary .plus::before,
  .faq-item summary .plus::after{content:"";position:absolute;background:var(--cyan);border-radius:2px;}
  .faq-item summary .plus::before{left:0;top:7px;width:16px;height:2px;}
  .faq-item summary .plus::after{left:7px;top:0;width:2px;height:16px;transition:opacity .22s ease;}
  .faq-item[open] summary .plus{transform:rotate(180deg);}
  .faq-item[open] summary .plus::after{opacity:0;}
  .faq-body{padding:0 22px 20px;font-size:14.5px;color:#AFC3DA;line-height:1.9;}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    border:1px solid rgba(120,200,255,.22);
    background:linear-gradient(115deg,rgba(47,107,255,.22),rgba(11,18,32,.94) 58%);
    padding:46px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
    box-shadow:var(--shadow);
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:repeating-linear-gradient(90deg,rgba(120,200,255,.07) 0 1px,transparent 1px 22px);
    opacity:.75;pointer-events:none;
  }
  .cta-band > *{position:relative;z-index:1;}
  .cta-band h2{font-size:clamp(1.45rem,2.3vw,2rem);font-weight:700;margin-bottom:10px;}
  .cta-band p{font-size:14.5px;color:#B9CBDD;max-width:560px;line-height:1.85;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#050910;border-top:1px solid var(--line);padding:56px 0 0;margin-top:24px;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
  .footer-brand .brand{margin-bottom:16px;}
  .footer-desc{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:340px;}
  .footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--text);}
  .footer-col ul li{margin-bottom:9px;}
  .footer-col a{font-size:13.5px;color:var(--muted);transition:color .2s ease;}
  .footer-col a:hover{color:var(--cyan);}
  .footer-col p{font-size:13px;color:var(--muted);line-height:1.85;margin-bottom:12px;}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
    padding:18px 0 26px;border-top:1px solid rgba(120,200,255,.1);
    font-size:12.5px;color:#6E82A0;
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .nav-search{display:none;}
    .nav-links{display:none;}
    .menu-btn{display:flex;}
    .nav-content{flex:1 1 auto;}
    .nav-aside{flex:0 0 auto;}
    .hero-inner{grid-template-columns:1fr;gap:32px;padding:48px 0 56px;min-height:0;}
    .hero-copy{max-width:none;}
    .ladder-grid{grid-template-columns:1fr;}
    .reward-side{grid-template-rows:none;grid-template-columns:repeat(3,1fr);}
    .acc-grid{grid-template-columns:1fr;}
    .scene-grid{grid-template-columns:1fr 1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  }
  @media (max-width:768px){
    .container{padding:0 18px;}
    .nav-wrap{padding:0 18px;min-height:64px;}
    .section{padding:52px 0;}
    .section-tight{padding:44px 0;}
    .steps{grid-template-columns:1fr 1fr;gap:18px;}
    .steps::before{display:none;}
    .reward-side{grid-template-columns:1fr;}
    .scene-grid{grid-template-columns:1fr;}
    .task-band{padding:24px 20px;}
    .hero-chips{gap:8px;}
  }
  @media (max-width:520px){
    .brand-text b{font-size:14px;}
    .brand-text span{font-size:10px;letter-spacing:.18em;}
    .nav-aside .btn{display:none;}
    .hero h1{font-size:1.95rem;}
    .steps{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
    .hero-actions .btn{width:100%;}
    .reward-hero{min-height:320px;padding:22px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none!important;animation:none!important;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category4 */
:root{
  --bg:#070B14;
  --bg-2:#0B1220;
  --surface:#0E1828;
  --primary:#2F6BFF;
  --accent:#35E0C8;
  --warm:#FFB45C;
  --text:#E8F1FF;
  --muted:#8FA3BF;
  --border:rgba(120,200,255,.16);
  --border-strong:rgba(120,200,255,.30);
  --danger:#FF6B6B;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 16px 40px rgba(0,0,0,.35);
  --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 620px at 82% -12%, rgba(47,107,255,.20), transparent 68%),
    radial-gradient(720px 520px at 6% 4%, rgba(53,224,200,.10), transparent 70%),
    repeating-linear-gradient(0deg, rgba(120,200,255,.045) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(90deg, rgba(120,200,255,.035) 0 1px, transparent 1px 56px);
  background-attachment:fixed;
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(53,224,200,.28);color:#fff}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.num{font-family:"DIN Alternate","Bahnschrift","Arial Narrow",sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.84);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand-mark{width:36px;height:36px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.08}
.brand-text b{font-size:15px;font-weight:800;letter-spacing:.02em;color:#fff}
.brand-text span{font-size:11px;letter-spacing:.2em;color:var(--accent);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-links a{
  position:relative;display:inline-block;
  padding:9px 13px;border-radius:10px;
  font-size:14px;color:var(--muted);text-decoration:none;
  transition:color .2s ease,background-color .2s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(120,200,255,.08)}
.nav-links a.active{color:#fff;font-weight:600}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;
  background:var(--accent);border-radius:2px;box-shadow:0 0 10px rgba(53,224,200,.7);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;height:38px;
  padding:0 12px;border-radius:var(--radius-sm);
  background:var(--bg-2);border:1px solid var(--border);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box svg{width:15px;height:15px;stroke:var(--muted);flex:none}
.search-box input{
  width:160px;background:transparent;border:0;outline:0;
  color:var(--text);font-size:13px;font-family:inherit;
}
.search-box input::placeholder{color:#63799a}
.search-box:focus-within{border-color:rgba(53,224,200,.6);box-shadow:0 0 0 3px rgba(53,224,200,.14)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:12px;border:1px solid transparent;
  font-size:14px;font-weight:600;text-decoration:none;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn-primary{
  background:var(--primary);color:#fff;
  border-color:rgba(53,224,200,.5);
  box-shadow:0 0 0 1px rgba(47,107,255,.18),0 10px 26px rgba(47,107,255,.30);
}
.btn-primary:hover{background:#3d78ff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,224,200,.6),0 14px 32px rgba(47,107,255,.42)}
.btn-primary:active{transform:none;box-shadow:0 0 0 1px rgba(53,224,200,.4),0 6px 16px rgba(47,107,255,.3)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:rgba(53,224,200,.55);background:rgba(53,224,200,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:none}
.btn-sm{padding:8px 15px;font-size:13px;border-radius:10px}
.btn-block{width:100%}

.menu-toggle{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:40px;height:38px;padding:0 9px;
  background:var(--bg-2);border:1px solid var(--border);border-radius:10px;cursor:pointer;
}
.menu-toggle span{display:block;height:2px;border-radius:2px;background:var(--text);transition:transform .2s ease,opacity .2s ease}
.menu-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.mobile-drawer{
  display:none;border-top:1px solid var(--border);
  background:rgba(11,18,32,.98);padding:16px 0 22px;
}
.mobile-drawer.open{display:block}
.drawer-search{display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;border-radius:var(--radius-sm);background:var(--bg-2);border:1px solid var(--border);margin-bottom:14px}
.drawer-search input{flex:1;background:transparent;border:0;outline:0;color:var(--text);font-size:14px;font-family:inherit}
.drawer-search input::placeholder{color:#63799a}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.drawer-nav a{
  padding:12px 12px;border-radius:10px;font-size:15px;color:var(--text);
  text-decoration:none;border:1px solid transparent;transition:background-color .2s ease,border-color .2s ease;
}
.drawer-nav a:hover{background:rgba(120,200,255,.08)}
.drawer-nav a.active{color:var(--accent);background:rgba(53,224,200,.10);border-color:rgba(53,224,200,.32);font-weight:600}

/* ============ 阅读头 ============ */
.reader-head{
  position:relative;overflow:hidden;
  padding:44px 0 40px;
  border-bottom:1px solid var(--border);
}
.reader-head::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(7,11,20,.94) 0%,rgba(7,11,20,.86) 46%,rgba(7,11,20,.55) 100%),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center right;
  opacity:.9;pointer-events:none;
}
.reader-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(53,224,200,.06) 0 1px,transparent 1px 6px);
  opacity:.5;
}
.reader-head .container{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap;margin-bottom:20px}
.crumbs a{text-decoration:none;color:var(--muted);transition:color .2s ease}
.crumbs a:hover{color:var(--accent)}
.crumbs span{color:#4d6382}
.crumbs em{font-style:normal;color:var(--text)}
.reader-head h1{
  font-size:clamp(1.9rem,3.4vw,3rem);
  font-weight:800;line-height:1.28;letter-spacing:.01em;
  max-width:22ch;
}
.reader-head h1 .hl{color:var(--accent)}
.lead{
  margin-top:18px;max-width:64ch;font-size:15.5px;color:#B9CBDD;line-height:1.85;
}
.head-tools{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.inline-search{
  display:flex;align-items:center;gap:10px;
  height:46px;padding:0 14px;border-radius:12px;
  background:rgba(14,24,40,.72);border:1px solid var(--border);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  min-width:280px;flex:0 1 340px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.inline-search svg{width:16px;height:16px;stroke:var(--muted);flex:none}
.inline-search input{flex:1;background:transparent;border:0;outline:0;color:var(--text);font-size:14px;font-family:inherit}
.inline-search input::placeholder{color:#63799a}
.inline-search:focus-within{border-color:rgba(53,224,200,.6);box-shadow:0 0 0 3px rgba(53,224,200,.14)}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;
  color:#C6D6E8;text-decoration:none;
  background:rgba(14,24,40,.68);border:1px solid var(--border);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease,transform .2s ease;
}
.chip:hover{color:#fff;border-color:rgba(53,224,200,.5);background:rgba(53,224,200,.10);transform:translateY(-2px)}
.chip:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ============ 主体双栏 ============ */
.section{padding:64px 0}
.section-tight{padding:52px 0}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{
  font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:700;line-height:1.35;
}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;letter-spacing:.16em;color:var(--accent);
  text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}

.faq-layout{
  display:grid;grid-template-columns:250px minmax(0,1fr);
  gap:36px;align-items:start;padding-top:56px;padding-bottom:24px;
}
.anchor-nav{
  position:sticky;top:96px;
  padding:20px;border-radius:var(--radius-lg);
  background:rgba(14,24,40,.62);
  border:1px solid var(--border);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 0 0 1px rgba(255,255,255,.03) inset;
}
.anchor-title{
  font-size:12px;letter-spacing:.16em;color:var(--muted);
  padding-bottom:12px;margin-bottom:12px;
  border-bottom:1px solid var(--border);
}
.anchor-link{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 12px;margin-bottom:6px;border-radius:10px;
  font-size:14px;color:#B9CBDD;text-decoration:none;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.anchor-link::after{content:"→";font-size:12px;color:#4d6382;transition:transform .2s ease,color .2s ease}
.anchor-link:hover{background:rgba(120,200,255,.08);color:#fff}
.anchor-link:hover::after{transform:translateX(3px);color:var(--accent)}
.anchor-link.active{
  color:var(--accent);background:rgba(53,224,200,.10);
  border-color:rgba(53,224,200,.34);font-weight:600;
}
.anchor-link.active::after{color:var(--accent)}
.anchor-nav .btn{margin-top:16px}

.faq-group{margin-bottom:40px;scroll-margin-top:96px}
.faq-group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.group-head h2{font-size:1.28rem;font-weight:700;line-height:1.4}
.group-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;flex:none;border-radius:10px;
  background:rgba(47,107,255,.16);border:1px solid rgba(120,200,255,.28);
  color:var(--accent);font-size:13px;font-weight:700;
  font-family:"DIN Alternate","Bahnschrift",sans-serif;
}
.group-desc{margin:-8px 0 18px;color:var(--muted);font-size:14px}

.faq-item{
  margin-bottom:12px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--border);
  overflow:hidden;
  transition:border-color .22s ease,background-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:var(--border-strong)}
.faq-item[open]{
  border-color:rgba(53,224,200,.45);
  background:linear-gradient(180deg,rgba(53,224,200,.075),rgba(14,24,40,.9));
  box-shadow:0 10px 26px rgba(0,0,0,.28);
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:17px 20px;font-size:15.5px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;font-size:20px;line-height:1;
  color:var(--accent);font-weight:400;margin-top:2px;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-3px;border-radius:var(--radius)}
.faq-body{padding:0 20px 20px;color:#A9BCD2;font-size:14.5px;line-height:1.88;max-width:74ch}

/* ============ 表单 + 安全清单 ============ */
.support-grid{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:24px;align-items:start;
}
.panel{
  padding:26px;border-radius:var(--radius-lg);
  background:var(--surface);border:1px solid var(--border);
}
.panel-glass{
  background:rgba(14,24,40,.62);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-color:rgba(120,200,255,.18);
  box-shadow:0 0 0 1px rgba(255,255,255,.06) inset,0 16px 40px rgba(0,0,0,.3);
}
.panel-head h3{font-size:1.18rem;font-weight:700}
.panel-head p{margin-top:8px;color:var(--muted);font-size:14px}

.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-top:16px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.field label .req{color:var(--warm)}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-sm);
  color:var(--text);font-size:14px;font-family:inherit;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{resize:vertical;min-height:118px;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#5b7090}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--border-strong)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(53,224,200,.6);
  box-shadow:0 0 0 3px rgba(53,224,200,.14);
  background:#0C1424;
}
.field select{appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238FA3BF' stroke-width='2.2' stroke-linecap='round'><path d='M6 9l6 6 6-6'/></svg>");background-repeat:no-repeat;background-position:right 13px center;padding-right:38px}
.field-note{font-size:12.5px;color:#6b81a0;margin-top:8px}
.err-text{display:none;font-size:12.5px;color:var(--warm);margin-top:6px}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-top:18px}
.check-row input{
  width:16px;height:16px;margin-top:4px;flex:none;accent-color:var(--accent);cursor:pointer;
}
.check-row label{font-size:13.5px;color:#A9BCD2;line-height:1.7;cursor:pointer}
.check-row a{color:var(--accent);text-decoration:none;border-bottom:1px dashed rgba(53,224,200,.5)}
.check-row a:hover{border-bottom-style:solid}
.form-actions{margin-top:22px}
.form-actions .btn{width:100%}

.safety-figure{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border);margin-bottom:20px;
}
.safety-figure img{width:100%;height:150px;object-fit:cover;transform:scale(1.01);transition:transform .35s ease}
.safety-figure:hover img{transform:scale(1.05)}
.safety-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.15) 0%,rgba(14,24,40,.92) 100%);
}
.safety-figure figcaption{
  position:absolute;left:16px;right:16px;bottom:14px;z-index:2;
  font-size:13px;color:#D5E3F2;letter-spacing:.02em;
}
.safety-list{display:flex;flex-direction:column;gap:12px;margin-top:18px}
.safety-list li{
  display:flex;gap:11px;align-items:flex-start;
  font-size:14px;color:#B9CBDD;line-height:1.75;
  padding-bottom:12px;border-bottom:1px dashed rgba(120,200,255,.14);
}
.safety-list li:last-child{border-bottom:0;padding-bottom:0}
.tick{
  flex:none;width:20px;height:20px;margin-top:3px;border-radius:6px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(53,224,200,.14);border:1px solid rgba(53,224,200,.4);
}
.tick svg{width:11px;height:11px;stroke:var(--accent);stroke-width:3;fill:none}
.warn-box{
  margin-top:20px;padding:14px 16px;border-radius:var(--radius);
  background:rgba(255,180,92,.08);border:1px solid rgba(255,180,92,.32);
  font-size:13.5px;color:#F0D2AE;line-height:1.75;
}
.warn-box strong{color:var(--warm)}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:24px;padding:44px 36px;
  background:linear-gradient(110deg,rgba(47,107,255,.22),rgba(14,24,40,.94) 58%);
  border:1px solid rgba(120,200,255,.24);
  box-shadow:var(--shadow);
  display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:28px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(53,224,200,.08) 0 1px,transparent 1px 14px);
  opacity:.55;
}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,200,.22),transparent 70%);pointer-events:none;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(1.4rem,2.2vw,1.95rem);font-weight:700;line-height:1.4;max-width:24ch}
.cta-band p{margin-top:12px;color:#B9CBDD;font-size:14.5px;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:72px;padding:56px 0 0;
  background:#050910;border-top:1px solid var(--border);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-desc{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:36ch}
.footer-col h4{
  font-size:13px;font-weight:700;color:#fff;letter-spacing:.06em;
  margin-bottom:14px;
}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col p{font-size:13.5px;color:var(--muted);line-height:1.8}
.footer-col a{
  font-size:13.5px;color:var(--muted);text-decoration:none;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding:18px 0 22px;border-top:1px solid rgba(120,200,255,.10);
  font-size:12.5px;color:#6b81a0;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .faq-layout{grid-template-columns:220px minmax(0,1fr);gap:26px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .search-box{display:none}
  .menu-toggle{display:flex}
  .header-inner{height:64px;gap:14px}
  .brand-mark{width:32px;height:32px}
  .brand-text b{font-size:14px}
  .brand-text span{font-size:10.5px}
  .faq-layout{grid-template-columns:1fr;padding-top:36px}
  .anchor-nav{position:static;top:auto}
  .anchor-nav .anchor-links{display:flex;flex-wrap:wrap;gap:8px}
  .anchor-nav .anchor-link{margin-bottom:0}
  .anchor-link::after{display:none}
  .support-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:32px 24px}
  .reader-head{padding:32px 0 30px}
}
@media (min-width:1024px){
  .menu-toggle{display:none}
  .mobile-drawer{display:none !important}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:44px 0}
  .section-tight{padding:38px 0}
  .form-row{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1 / -1}
  .reader-head h1{max-width:none}
  .inline-search{min-width:0;flex:1 1 100%}
  .faq-item summary{padding:15px 16px;font-size:15px}
  .faq-body{padding:0 16px 17px}
  .panel{padding:20px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .header-inner .btn-primary{padding:8px 12px;font-size:12.5px}
  .brand-text b{font-size:13.5px}
  .footer-grid{grid-template-columns:1fr}
  .chip{font-size:12px;padding:6px 12px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}