/* roulang page: index */
:root{
  --bg:#050C14;
  --surface-2:#081521;
  --surface-3:#0C1B29;
  --teal:#2FE0C8;
  --blue:#2C6BFF;
  --coral:#FF7A59;
  --text:#C9D8E4;
  --muted:#8FA6B8;
  --line:rgba(120,220,255,0.14);
  --glass-bg:rgba(255,255,255,0.045);
  --glass-line:rgba(120,220,255,0.16);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:10px;
  --shadow-card:0 18px 44px -24px rgba(0,0,0,0.9);
  --glow:0 0 20px rgba(47,224,200,0.35);
  --maxw:1200px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",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:var(--sans);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--teal);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:#EDF8FF;font-weight:700;line-height:1.3;}
p{margin:0;}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,224,200,0.28);color:#F2FBFF;}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
@media (min-width:640px){.wrap{padding:0 32px;}}
@media (min-width:1024px){.wrap{padding:0 40px;}}
@media (min-width:1440px){.wrap{max-width:1440px;}}

.g-gap{margin-left:-12px;margin-right:-12px;}
.g-gap > .cell{padding-left:12px;padding-right:12px;}
.g-gap > .cell > *{margin-bottom:24px;}
.g-gap > .cell > *:last-child{margin-bottom:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,12,20,0.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(47,224,200,0),rgba(47,224,200,0.5) 30%,rgba(44,107,255,0.5) 70%,rgba(44,107,255,0));
}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;flex-direction:column;line-height:1.1;flex:0 0 auto;}
.brand-main{font-size:19px;font-weight:800;letter-spacing:0.02em;color:#EAFBFF;white-space:nowrap;}
.brand-main em{font-style:normal;color:var(--teal);}
.brand-sub{font-size:10.5px;letter-spacing:0.18em;color:var(--muted);margin-top:4px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:8px;font-size:14.5px;color:#B9CCDA;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-link:hover{color:#EAFBFF;background:rgba(47,224,200,0.06);}
.nav-link.is-active{color:#E9FFFB;text-shadow:0 0 12px rgba(47,224,200,0.45);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--teal);box-shadow:0 0 12px rgba(47,224,200,0.45);
}
.nav-cta{flex:0 0 auto;margin-left:8px;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,0.03);color:#DCEBF5;
  cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-panel{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:var(--surface-2);border-bottom:1px solid var(--line);
  box-shadow:0 24px 40px -20px rgba(0,0,0,0.9);
  padding:12px 20px 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;padding:13px 14px;border-radius:8px;font-size:15px;color:#C9D8E4;
  border-left:2px solid transparent;
}
.mobile-panel a:hover,.mobile-panel a.is-active{
  border-left-color:var(--teal);background:rgba(47,224,200,0.07);color:#E9FFFB;
}
.mobile-panel .btn{margin-top:12px;width:100%;}

@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:60px;}
  .brand-main{font-size:17px;}
}
@media (max-width:639px){
  .nav-inner{height:56px;}
  .brand-sub{display:none;}
  .brand-main{font-size:16px;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);border:0;
  font-size:15px;font-weight:600;cursor:pointer;text-align:center;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-position .25s ease-out,background-color .2s ease-out,color .2s ease-out;
}
.btn-primary{
  background-image:linear-gradient(120deg,#2C6BFF 0%,#2FE0C8 100%);
  background-size:118% 100%;background-position:0 0;
  color:#04121A;box-shadow:inset 0 1px 0 rgba(255,255,255,0.35),0 10px 26px -16px rgba(47,224,200,0.9);
}
.btn-primary:hover{transform:translateY(-2px);background-position:92% 0;color:#04121A;box-shadow:inset 0 1px 0 rgba(255,255,255,0.45),var(--glow);}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 1px 0 rgba(255,255,255,0.3),0 0 10px rgba(47,224,200,0.18);}
.btn-ghost{
  background:transparent;border:1px solid rgba(47,224,200,0.45);color:var(--teal);
}
.btn-ghost:hover{background:rgba(47,224,200,0.10);color:#B7FFF3;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);background:rgba(47,224,200,0.16);}
.btn-block{width:100%;}
.btn-sm{height:44px;padding:0 18px;font-size:14px;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 88px;background:linear-gradient(180deg,#050C14 0%,#061119 60%,#050C14 100%);}
.hero-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0.34;z-index:0;}
.hero-veil{
  position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(120% 80% at 50% 0%,rgba(5,12,20,0.30) 0%,rgba(5,12,20,0.86) 62%,#050C14 100%),
    linear-gradient(180deg,rgba(5,12,20,0.55),rgba(5,12,20,0.2) 40%,#050C14 100%);
}
.hero-wave{
  position:absolute;left:50%;bottom:-260px;width:1800px;height:760px;transform:translateX(-50%);
  border-radius:50%;z-index:1;pointer-events:none;opacity:.75;
  background:repeating-radial-gradient(ellipse at center,rgba(47,224,200,0.055) 0 1px,transparent 1px 36px);
}
.hero-grid{position:relative;z-index:2;align-items:center;}
.hero-copy{padding-top:6px;}
.eyebrow{
  display:inline-block;font-size:11.5px;letter-spacing:0.2em;color:var(--teal);
  border:1px solid rgba(47,224,200,0.35);border-radius:999px;padding:5px 14px;margin-bottom:22px;
}
.hero-title{
  font-size:clamp(28px,4.2vw,50px);line-height:1.18;font-weight:800;color:#F4FDFF;letter-spacing:-0.01em;
}
.hero-title .hl{color:var(--teal);}
.hero-sub{
  margin-top:20px;max-width:580px;font-size:16px;line-height:1.85;color:#A9BFCE;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-note{margin-top:18px;font-size:12px;color:var(--muted);letter-spacing:0.02em;}
.hero-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--glass-line);
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.09),0 40px 80px -50px rgba(0,0,0,0.95);
  padding:28px;
}
.hero-card::after{
  content:"";position:absolute;top:-70px;right:-70px;width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,200,0.38),transparent 68%);
  filter:blur(8px);pointer-events:none;
  animation:breathe 6s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:.35;transform:scale(.9);}50%{opacity:.85;transform:scale(1.12);}}
.hero-card-title{font-size:18px;margin-bottom:6px;}
.hero-card-sub{font-size:13px;color:var(--muted);margin-bottom:16px;}
.flow-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);}
.flow-list li:last-child{border-bottom:0;}
.flow-num{font-family:var(--mono);font-size:12.5px;color:var(--teal);letter-spacing:0.08em;flex:0 0 auto;padding-top:3px;}
.flow-body strong{display:block;font-size:14.5px;color:#E6F4FB;font-weight:600;}
.flow-body p{font-size:13px;color:var(--muted);line-height:1.7;margin-top:4px;}
.hero-card .btn{margin-top:18px;}
@media (max-width:1023px){
  .hero{padding:52px 0 64px;}
  .hero-card{margin-top:8px;}
}
@media (max-width:639px){
  .hero{padding:40px 0 56px;}
  .hero-title{font-size:28px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-card{padding:22px;}
}

/* ---------- generic section ---------- */
.section{padding:92px 0;position:relative;}
.section-alt{padding:76px 0;background:var(--surface-2);}
.section-tight{padding:64px 0;}
.sec-head{margin-bottom:36px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:34px;}
.sec-title{font-size:clamp(22px,2.5vw,30px);color:#EDF8FF;letter-spacing:-0.005em;}
.sec-sub{margin-top:10px;font-size:14.8px;color:var(--muted);max-width:640px;line-height:1.8;}
.sec-link{font-size:14px;color:var(--teal);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.sec-link:hover{color:#B7FFF3;gap:10px;}

/* ---------- pain ---------- */
.pain-card{
  height:100%;padding:24px;border-radius:16px;border:1px solid var(--line);
  background:rgba(255,255,255,0.022);
  transition:border-color .2s ease-out,transform .2s ease-out,background .2s ease-out;
}
.pain-card:hover{border-color:rgba(47,224,200,0.45);transform:translateY(-2px);background:rgba(47,224,200,0.04);}
.pain-num{font-family:var(--mono);font-size:12.5px;letter-spacing:0.1em;color:var(--teal);}
.pain-text{margin-top:12px;font-size:15.5px;line-height:1.7;color:#DBEAF4;}

/* ---------- solution ---------- */
.sol-main{
  height:100%;padding:28px;border-radius:var(--r-lg);border:1px solid var(--glass-line);
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.09),var(--shadow-card);
  display:flex;flex-direction:column;
}
.sol-title{font-size:21px;}
.sol-desc{margin-top:12px;font-size:14.5px;line-height:1.85;color:#A5BAC9;}
.sol-points{margin-top:18px;}
.sol-points li{position:relative;padding-left:20px;font-size:14.2px;line-height:1.9;color:#C6D8E4;}
.sol-points li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--teal);box-shadow:0 0 10px rgba(47,224,200,0.6);
}
.sol-main img{margin-top:20px;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;}
.sol-main .btn{margin-top:22px;align-self:flex-start;}
.sol-side{display:flex;flex-direction:column;gap:20px;height:100%;}
.side-card{
  flex:1;padding:24px;border-radius:16px;border:1px solid var(--line);
  background:rgba(255,255,255,0.028);
  transition:border-color .2s ease-out,transform .2s ease-out;
  display:flex;flex-direction:column;
}
.side-card:hover{border-color:rgba(47,224,200,0.45);transform:translateY(-2px);}
.side-num{font-family:var(--mono);font-size:12px;letter-spacing:0.12em;color:var(--teal);}
.side-title{font-size:17px;margin-top:10px;}
.side-desc{margin-top:10px;font-size:13.8px;line-height:1.8;color:var(--muted);}
.side-link{margin-top:auto;padding-top:16px;font-size:13.5px;color:var(--teal);display:inline-flex;gap:6px;align-items:center;}
.side-card:hover .side-link{gap:10px;}
@media (min-width:640px) and (max-width:1023px){
  .sol-side{flex-direction:row;}
  .sol-side .side-card{flex:1;}
}
@media (max-width:639px){
  .sol-main{padding:22px;}
  .sol-title{font-size:19px;}
}

/* ---------- stats ---------- */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:6px 26px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(30px,3.4vw,38px);font-weight:700;color:var(--teal);
  text-shadow:0 0 18px rgba(47,224,200,0.35);line-height:1.2;
}
.stat-num small{font-size:14px;color:var(--muted);text-shadow:none;margin-left:4px;font-weight:500;}
.stat-label{margin-top:8px;font-size:12.8px;color:var(--muted);line-height:1.7;}
.stats-note{margin-top:26px;font-size:12px;color:rgba(143,166,184,0.72);}
@media (max-width:767px){
  .stats-row{grid-template-columns:repeat(2,1fr);row-gap:26px;}
  .stat{padding:0 18px;}
  .stat:nth-child(odd){border-left:0;padding-left:0;}
  .stat:nth-child(3),.stat:nth-child(4){padding-top:24px;border-top:1px solid var(--line);}
  .stat:nth-child(3){border-left:0;padding-left:0;}
}

/* ---------- news ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;padding:18px;
  border-radius:16px;border:1px solid var(--line);
  background:rgba(255,255,255,0.03);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.news-card:hover{
  transform:translateY(-3px);border-color:rgba(47,224,200,0.45);
  background:rgba(47,224,200,0.035);box-shadow:0 22px 50px -30px rgba(47,224,200,0.5);
}
.news-cover{border-radius:12px;overflow:hidden;background:var(--surface-3);}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease-out;}
.news-card:hover .news-cover img{transform:scale(1.04);}
.badge{
  display:inline-block;margin-top:14px;padding:3px 10px;border-radius:6px;
  font-size:12px;letter-spacing:0.04em;color:var(--teal);
  border:1px solid rgba(47,224,200,0.45);background:rgba(47,224,200,0.06);
}
.badge-warm{color:#FFB6A2;border-color:rgba(255,122,89,0.5);background:rgba(255,122,89,0.12);}
.news-title{
  margin-top:12px;font-size:16.5px;line-height:1.55;color:#EAF6FF;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:#B7FFF3;}
.news-desc{
  margin-top:10px;font-size:13.5px;line-height:1.78;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted);font-family:var(--mono);font-variant-numeric:tabular-nums;
}
.news-more{color:var(--teal);font-family:var(--sans);font-size:13px;display:inline-flex;gap:6px;}
.news-card:hover .news-more{gap:10px;}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  border-radius:var(--r-lg);border:1px solid var(--glass-line);background:var(--glass-bg);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  padding:32px;text-align:center;
}
.empty-state p{font-size:14px;color:var(--muted);}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;}
.faq-item{
  border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,0.025);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease-out,background .2s ease-out;
}
.faq-item:hover{border-color:rgba(47,224,200,0.32);}
.faq-item.is-open{border-color:rgba(47,224,200,0.5);background:rgba(47,224,200,0.045);}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;color:#E2F0F9;font-size:15.5px;
  text-align:left;cursor:pointer;transition:color .2s ease-out;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--teal);box-shadow:0 0 10px rgba(47,224,200,0.7);opacity:0;transition:opacity .2s ease-out;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-item.is-open .faq-q{color:var(--teal);}
.faq-icon{
  flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .25s ease-out;color:var(--teal);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:1px;
}
.faq-icon::before{left:9px;top:2px;width:2px;height:16px;}
.faq-icon::after{top:9px;left:2px;height:2px;width:16px;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-item.is-open .faq-icon::before{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease-out;}
.faq-item.is-open .faq-a{max-height:460px;}
.faq-a p{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:#9FB5C5;max-width:780px;}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;padding:38px 40px;
  border:1px solid var(--glass-line);
  background:linear-gradient(120deg,rgba(44,107,255,0.18) 0%,rgba(47,224,200,0.12) 100%);
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,200,0.18),transparent 70%);pointer-events:none;
}
.cta-text{position:relative;z-index:2;max-width:620px;}
.cta-title{font-size:clamp(20px,2.3vw,26px);color:#F1FDFF;}
.cta-sub{margin-top:10px;font-size:14px;color:#A9C0CF;line-height:1.8;}
.cta-band .btn{position:relative;z-index:2;}
@media (max-width:639px){
  .cta-band{padding:26px 22px;}
  .cta-band .btn{width:100%;}
}

/* ---------- privacy ---------- */
.privacy-bar{
  margin-top:24px;display:flex;gap:10px;align-items:flex-start;
  font-size:12.5px;line-height:1.75;color:rgba(143,166,184,0.9);max-width:860px;
}
.privacy-bar a{color:var(--teal);text-decoration:underline;text-underline-offset:3px;}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:12.5px;color:var(--muted);line-height:1.7;}
.check-line input[type="checkbox"]{
  appearance:none;-webkit-appearance:none;width:18px;height:18px;flex:0 0 auto;margin-top:2px;
  border-radius:5px;border:1px solid var(--line);background:rgba(255,255,255,0.03);cursor:pointer;position:relative;
}
.check-line input[type="checkbox"]:checked{border-color:var(--teal);background:rgba(47,224,200,0.18);}
.check-line input[type="checkbox"]:checked::after{
  content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;
  border:2px solid var(--teal);border-top:0;border-left:0;transform:rotate(42deg);
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:20px;border-top:1px solid var(--line);background:#04090F;padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .brand-main{font-size:18px;}
.footer-brand p{margin-top:14px;font-size:13px;line-height:1.85;color:var(--muted);max-width:280px;}
.footer-title{font-size:13px;letter-spacing:0.12em;color:#9FB6C6;margin-bottom:16px;font-weight:600;}
.footer-list li{margin-bottom:10px;}
.footer-link{position:relative;font-size:13.5px;color:var(--muted);padding-left:0;transition:color .2s ease-out,padding-left .2s ease-out;}
.footer-link::before{
  content:"";position:absolute;left:0;top:50%;width:0;height:1px;background:var(--teal);
  transform:translateY(-50%);transition:width .2s ease-out;
}
.footer-link:hover{color:var(--teal);padding-left:14px;}
.footer-link:hover::before{width:8px;}
.footer-contact li{font-size:13.5px;color:var(--muted);margin-bottom:10px;line-height:1.7;}
.footer-contact strong{color:#C6D8E4;font-weight:600;}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(143,166,184,0.75);
}
.footer-bottom a{color:rgba(143,166,184,0.9);}
.footer-bottom a:hover{color:var(--teal);}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px;}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;}}

/* ---------- modal ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:20px;
  background:rgba(3,8,14,0.72);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);
}
.modal-mask.is-open{display:flex;}
.modal-box{
  position:relative;width:100%;max-width:560px;max-height:90vh;overflow:auto;
  border-radius:22px;border:1px solid var(--glass-line);
  background:linear-gradient(180deg,#0B1A28 0%,#071320 100%);
  box-shadow:0 44px 90px -30px rgba(0,0,0,0.95),inset 0 1px 0 rgba(255,255,255,0.08);
  padding:28px;
}
.modal-close{
  position:absolute;top:16px;right:16px;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,0.03);color:#C9D8E4;
  font-size:20px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.modal-close:hover{background:rgba(47,224,200,0.12);color:var(--teal);border-color:rgba(47,224,200,0.5);}
.modal-title{font-size:20px;padding-right:44px;}
.modal-sub{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.7;}
.field{margin-top:16px;}
.field label{display:block;font-size:13px;color:#A5BAC9;margin-bottom:7px;}
.field .req{color:var(--coral);margin-left:3px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;
  background:rgba(255,255,255,0.03);border:1px solid var(--line);
  color:#E6F4FB;font-size:14.5px;font-family:inherit;line-height:1.6;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.field textarea{resize:vertical;min-height:84px;}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8FA6B8 50%),linear-gradient(135deg,#8FA6B8 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--teal);background:rgba(47,224,200,0.05);
  box-shadow:0 0 0 3px rgba(47,224,200,0.18);
}
.field input.is-error,.field textarea.is-error{border-color:var(--coral);}
.form-hint{font-size:12px;color:var(--coral);margin-top:6px;display:none;}
.form-hint.is-show{display:block;}
.modal-box .btn{margin-top:20px;}
.modal-box .check-line{margin-top:16px;}
.form-tip{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.7;}
.form-tip.is-ok{color:var(--teal);}
@media (max-width:639px){
  .modal-mask{align-items:flex-end;padding:0;}
  .modal-box{max-width:100%;border-radius:22px 22px 0 0;max-height:92vh;padding:24px 20px 28px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:0.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg:#050C14;
  --bg-2:#081521;
  --bg-3:#0C1B29;
  --cyan:#2FE0C8;
  --blue:#2C6BFF;
  --coral:#FF7A59;
  --text:#C9D8E4;
  --muted:#8FA6B8;
  --strong:#E9FFFB;
  --line:rgba(120,220,255,0.14);
  --line-strong:rgba(120,220,255,0.28);
  --glass:rgba(255,255,255,0.045);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 18px 50px rgba(0,0,0,0.45);
  --shadow-soft:0 10px 30px rgba(0,0,0,0.28);
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 8% -8%, rgba(44,107,255,0.16), transparent 62%),
    radial-gradient(760px 460px at 96% 4%, rgba(47,224,200,0.12), transparent 60%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--cyan);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,224,200,0.28);color:#ffffff;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
@media (max-width:1023px){.wrap{padding:0 32px;}}
@media (max-width:639px){.wrap{padding:0 20px;}}

/* ===== 顶栏 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,12,20,0.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,224,200,0.5),rgba(44,107,255,0.5),transparent);
}
.header-inner{display:flex;align-items:center;gap:26px;height:var(--header-h);}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-text{display:block;}
.brand-main{
  display:block;font-size:20px;font-weight:800;line-height:1.15;
  letter-spacing:0.02em;color:var(--strong);
}
.brand-main em{font-style:normal;color:var(--cyan);}
.brand-sub{
  display:block;font-size:11px;line-height:1.5;color:var(--muted);
  letter-spacing:0.18em;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:9px;
  font-size:15px;color:var(--muted);
  transition:color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-link:hover{color:var(--strong);background:rgba(47,224,200,0.08);}
.nav-link.is-active{color:var(--strong);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--cyan);box-shadow:0 0 12px rgba(47,224,200,0.45);border-radius:2px;
}
.header-cta{margin-left:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:var(--glass);
  color:var(--strong);transition:border-color .2s,background-color .2s;
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(47,224,200,0.1);}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-nav{display:none;padding:8px 0 18px;border-top:1px solid var(--line);}
.mobile-nav a{
  display:block;padding:13px 4px;font-size:15px;color:var(--text);
  border-left:2px solid transparent;padding-left:14px;
  transition:color .2s,border-color .2s,background-color .2s;
}
.mobile-nav a:hover{color:var(--cyan);border-left-color:var(--cyan);background:rgba(47,224,200,0.06);}
.mobile-nav a.is-active{color:var(--strong);border-left-color:var(--cyan);}
.mobile-nav .m-cta{margin-top:10px;padding-left:0;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:700;letter-spacing:0.01em;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-primary{
  color:#04121A;
  background-image:linear-gradient(120deg,#2C6BFF 0%,#2FE0C8 100%);
  background-size:108% 108%;background-position:0 0;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.35),0 8px 22px rgba(44,107,255,0.22);
}
.btn-primary:hover{
  color:#04121A;transform:translateY(-2px);background-position:8% 0;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.4),0 0 20px rgba(47,224,200,0.35);
}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 1px 0 rgba(255,255,255,0.3),0 0 10px rgba(47,224,200,0.2);}
.btn-ghost{
  color:var(--cyan);border:1px solid rgba(47,224,200,0.45);background:transparent;
}
.btn-ghost:hover{color:var(--cyan);background:rgba(47,224,200,0.10);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}

/* ===== 文章抬头 ===== */
.article-hero{
  position:relative;overflow:hidden;
  padding:34px 0 44px;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg,rgba(5,12,20,0.86),rgba(5,12,20,0.96)),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  background-color:var(--bg-2);
}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(620px 320px at 82% 0%,rgba(47,224,200,0.16),transparent 70%);
}
.article-hero .wrap{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{color:var(--muted);transition:color .2s;}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb .sep{color:rgba(143,166,184,0.6);}
.breadcrumb .current{color:var(--text);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:34px;line-height:1.3;font-weight:800;color:var(--strong);
  letter-spacing:-0.01em;max-width:900px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:18px;font-size:13px;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  font-size:12px;letter-spacing:0.04em;border-radius:6px;
  color:var(--cyan);border:1px solid rgba(47,224,200,0.42);background:rgba(47,224,200,0.08);
}
.badge-warm{
  color:#1a0d08;background:rgba(255,122,89,0.85);border-color:transparent;
}
.title-rule{width:56px;height:1px;background:var(--cyan);margin-top:22px;box-shadow:0 0 10px rgba(47,224,200,0.6);}

/* ===== 正文布局 ===== */
.article-main{padding:56px 0 96px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;align-items:start;
}
.article-body{
  max-width:820px;font-size:16px;line-height:1.9;color:var(--text);
  word-break:break-word;
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;font-weight:800;color:var(--strong);
  margin:1.9em 0 0.9em;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:0.22em;bottom:0.22em;width:3px;
  background:var(--cyan);border-radius:2px;
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:700;color:var(--strong);margin:1.6em 0 0.6em;}
.article-body h4{font-size:17px;font-weight:700;color:var(--strong);margin:1.4em 0 0.5em;}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(47,224,200,0.4);}
.article-body a:hover{color:var(--strong);border-bottom-color:var(--strong);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{line-height:1.8;margin-bottom:0.45em;}
.article-body li::marker{color:var(--cyan);}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;
  border-left:3px solid var(--cyan);border-radius:0 10px 10px 0;
  background:rgba(255,255,255,0.03);color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;height:auto;margin:1.6em 0;object-fit:cover;
  border-radius:var(--radius-sm);border:1px solid var(--line);
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--muted);
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;
  font-size:14px;border:1px solid var(--line);border-radius:10px;overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;border:1px solid var(--line);text-align:left;vertical-align:top;
}
.article-body th{background:var(--bg-3);color:var(--strong);font-weight:700;}
.article-body code{
  font-family:var(--mono);font-size:0.92em;padding:2px 6px;border-radius:6px;
  background:rgba(255,255,255,0.06);color:#9FF6EA;
}
.article-body pre{
  padding:16px 18px;border-radius:12px;overflow-x:auto;
  background:var(--bg-3);border:1px solid var(--line);
}
.article-body pre code{background:none;padding:0;}

/* ===== 侧栏 ===== */
.article-side{position:sticky;top:calc(var(--header-h) + 24px);display:grid;gap:20px;}
.side-card{
  padding:24px;border-radius:var(--radius);
  background:var(--glass);
  border:1px solid rgba(120,220,255,0.16);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.09),var(--shadow-soft);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:border-color .2s ease,transform .2s ease;
}
.side-card:hover{border-color:var(--line-strong);}
.side-title{
  font-size:15px;font-weight:700;color:var(--strong);letter-spacing:0.02em;
  margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--cyan);}
.side-list{display:grid;gap:2px;}
.side-list li{border-bottom:1px solid var(--line);padding:11px 0;}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list li:first-child{padding-top:0;}
.side-list a{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:var(--text);transition:color .2s;}
.side-list a:hover{color:var(--cyan);}
.side-date{font-family:var(--mono);font-size:12px;color:var(--muted);white-space:nowrap;}
.side-note{font-size:13.5px;line-height:1.8;color:var(--muted);margin-bottom:16px;}
.side-card .btn{width:100%;}

/* ===== 文末 CTA / 推荐 / 返回 ===== */
.article-foot{display:grid;gap:40px;margin-top:56px;}
.cta-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:28px 30px;border-radius:var(--radius);
  background-image:linear-gradient(120deg,rgba(44,107,255,0.20),rgba(47,224,200,0.14));
  border:1px solid var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.1),var(--shadow-soft);
}
.cta-bar h2{font-size:20px;color:var(--strong);font-weight:800;line-height:1.4;}
.cta-bar p{font-size:13.5px;color:var(--muted);margin-top:6px;}
.rel-title{font-size:18px;font-weight:800;color:var(--strong);margin-bottom:18px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.rel-card{
  display:flex;flex-direction:column;gap:10px;padding:20px;
  border-radius:var(--radius);background:var(--glass);
  border:1px solid rgba(120,220,255,0.16);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-soft);}
.rel-card h3{font-size:15px;line-height:1.55;color:var(--strong);font-weight:700;}
.rel-card .rel-time{font-family:var(--mono);font-size:12px;color:var(--muted);}
.rel-card .rel-go{font-size:13px;color:var(--cyan);display:inline-flex;align-items:center;gap:6px;margin-top:auto;}
.back-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);
  transition:color .2s ease,transform .2s ease;
}
.back-link:hover{color:var(--cyan);transform:translateX(-4px);}

/* ===== 空态 ===== */
.empty-card{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:240px;padding:40px 24px;text-align:center;
  border-radius:var(--radius);background:var(--glass);
  border:1px solid rgba(120,220,255,0.16);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.09);
}
.empty-card p{font-size:14px;color:var(--muted);}
.empty-card strong{display:block;font-size:18px;color:var(--strong);}

/* ===== 表单弹层 ===== */
.modal-mask{
  position:fixed;inset:0;z-index:120;display:none;
  align-items:center;justify-content:center;padding:24px;
  background:rgba(3,8,14,0.72);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
}
.modal-mask.is-open{display:flex;}
.modal-box{
  position:relative;width:100%;max-width:560px;max-height:88vh;overflow-y:auto;
  padding:30px;border-radius:22px;
  background:rgba(8,21,33,0.96);
  border:1px solid rgba(120,220,255,0.22);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.1),0 30px 80px rgba(0,0,0,0.6);
}
.modal-box h2{font-size:20px;font-weight:800;color:var(--strong);margin-bottom:6px;}
.modal-box .modal-sub{font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.modal-close{
  position:absolute;top:12px;right:12px;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;border-radius:12px;
  color:var(--muted);font-size:20px;line-height:1;
  transition:color .2s,background-color .2s;
}
.modal-close:hover{color:var(--strong);background:rgba(255,255,255,0.06);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text);margin-bottom:7px;letter-spacing:0.02em;}
.field label .req{color:var(--coral);margin-left:4px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;
  font-family:inherit;font-size:14.5px;color:var(--strong);
  background:rgba(255,255,255,0.03);
  border:1px solid var(--line);
  transition:border-color .2s,box-shadow .2s,background-color .2s;
  appearance:none;
}
.field textarea{resize:vertical;min-height:88px;line-height:1.7;}
.field select{background-image:linear-gradient(45deg,transparent 49%,var(--muted) 50%),linear-gradient(-45deg,transparent 49%,var(--muted) 50%);background-size:6px 6px,6px 6px;background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-repeat:no-repeat;}
.field input::placeholder,.field textarea::placeholder{color:rgba(143,166,184,0.6);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);background:rgba(255,255,255,0.05);
  box-shadow:0 0 0 3px rgba(47,224,200,0.18);
}
.field input:disabled,.field select:disabled,.field textarea:disabled{opacity:0.45;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:12.5px;color:var(--muted);line-height:1.7;}
.check-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--cyan);flex:0 0 auto;}
.check-row a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}
.privacy-note{
  margin-top:16px;padding:14px 16px;border-radius:12px;
  font-size:12.5px;line-height:1.75;color:var(--muted);
  background:rgba(255,255,255,0.025);border:1px solid var(--line);
}
.privacy-note a{color:var(--cyan);}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;margin-top:20px;
  background:linear-gradient(180deg,rgba(8,21,33,0.9),rgba(5,12,20,1));
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding:64px 0 40px;
}
.footer-brand .brand-main{font-size:22px;}
.footer-brand p{font-size:13.5px;line-height:1.85;color:var(--muted);margin-top:12px;max-width:340px;}
.footer-title{font-size:14px;font-weight:700;color:var(--strong);letter-spacing:0.04em;margin-bottom:16px;}
.footer-list{display:grid;gap:10px;}
.footer-link{
  position:relative;display:inline-block;font-size:14px;color:var(--muted);
  padding-left:0;transition:color .2s ease,padding-left .2s ease;
}
.footer-link::before{
  content:"";position:absolute;left:-14px;top:50%;width:8px;height:1px;
  background:var(--cyan);opacity:0;transition:opacity .2s ease;
}
.footer-link:hover{color:var(--cyan);padding-left:2px;}
.footer-link:hover::before{opacity:1;}
.footer-contact{display:grid;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.75;}
.footer-contact strong{color:var(--text);font-weight:600;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);
}
.footer-bottom a{color:var(--muted);transition:color .2s;}
.footer-bottom a:hover{color:var(--cyan);}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:36px;}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:1fr;gap:36px;}
  .article-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-title{font-size:30px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px;}
}
@media (max-width:880px){
  :root{--header-h:56px;}
  .nav-links,.header-cta{display:none;}
  .nav-toggle{display:flex;}
  .mobile-nav.is-open{display:block;}
  .brand-main{font-size:18px;}
  .brand-sub{font-size:10px;letter-spacing:0.14em;}
}
@media (max-width:639px){
  body{font-size:15.5px;}
  .article-hero{padding:24px 0 32px;}
  .article-title{font-size:24px;line-height:1.36;}
  .article-main{padding:36px 0 64px;}
  .article-side{grid-template-columns:1fr;}
  .article-body{font-size:15.5px;line-height:1.88;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:22px;}
  .cta-bar .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal-box{
    max-width:100%;max-height:92vh;border-radius:22px 22px 0 0;padding:26px 20px 30px;
  }
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important;}
  .btn:hover,.rel-card:hover,.back-link:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --bg:#050C14;
  --surface-2:#081521;
  --surface-3:#0C1B29;
  --brand:#2FE0C8;
  --brand-2:#2C6BFF;
  --accent:#FF7A59;
  --text:#C9D8E4;
  --muted:#8FA6B8;
  --title:#E9FFFB;
  --line:rgba(120,220,255,0.14);
  --line-strong:rgba(120,220,255,0.28);
  --glass-bg:rgba(255,255,255,0.045);
  --glass-line:rgba(120,220,255,0.16);
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-soft:0 24px 60px rgba(0,0,0,0.45);
  --shadow-card:0 18px 40px rgba(2,8,14,0.5);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
  --space-7:96px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(circle at 12% -10%, rgba(44,107,255,0.16), transparent 46%),
    radial-gradient(circle at 92% 8%, rgba(47,224,200,0.10), transparent 42%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--title)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;position:relative;z-index:1}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,12,20,0.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,224,200,0.5),rgba(44,107,255,0.5),transparent);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{display:flex;flex-direction:column;line-height:1.15;color:var(--title)}
.brand-main{font-size:20px;font-weight:800;letter-spacing:.02em}
.brand-main em{color:var(--brand);font-style:normal}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.14em;font-weight:500}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 15px;
  font-size:15px;
  color:var(--muted);
  border-radius:var(--radius-sm);
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-link:hover{color:var(--title);background:rgba(47,224,200,0.07)}
.nav-link.is-active{color:var(--title);font-weight:600}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:15px;right:15px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(47,224,200,0.45);
}
.header-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:42px;
  padding:0 20px;
  border-radius:10px;
  font-size:14px;
  font-weight:700;
  color:#03151A;
  background:linear-gradient(120deg,#2C6BFF,#2FE0C8);
  box-shadow:0 0 18px rgba(47,224,200,0.28);
  border:none;
  cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,filter .2s ease-out;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 0 24px rgba(47,224,200,0.45);color:#03151A}
.header-cta:active{transform:translateY(0);box-shadow:0 0 10px rgba(47,224,200,0.25)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--title);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(47,224,200,0.08)}
.mobile-panel{
  display:none;
  flex-direction:column;
  gap:6px;
  padding:14px 20px 20px;
  background:var(--surface-2);
  border-top:1px solid var(--line);
}
.mobile-panel.is-open{display:flex}
.mobile-link{
  display:block;
  padding:12px 14px;
  color:var(--text);
  border-left:2px solid transparent;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  transition:all .2s ease-out;
}
.mobile-link:hover{background:rgba(47,224,200,0.08);color:var(--title)}
.mobile-link.is-active{color:var(--title);border-left-color:var(--brand);background:rgba(47,224,200,0.08)}
.mobile-cta{margin-top:10px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:10px;
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.btn-primary{
  color:#03151A;
  background:linear-gradient(120deg,#2C6BFF,#2FE0C8);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.35),0 10px 26px rgba(12,40,80,0.5);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.35),0 0 20px rgba(47,224,200,0.35);
  color:#03151A;
}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 1px 0 rgba(255,255,255,0.25),0 0 10px rgba(47,224,200,0.2)}
.btn-ghost{
  color:var(--brand);
  background:transparent;
  border-color:rgba(47,224,200,0.45);
}
.btn-ghost:hover{background:rgba(47,224,200,0.10);color:var(--title);border-color:rgba(47,224,200,0.7)}
.btn-ghost:active{background:rgba(47,224,200,0.16)}

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 88px;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(5,12,20,0.72),rgba(5,12,20,0.94)),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.9;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    repeating-radial-gradient(circle at 14% 124%, transparent 0 46px, rgba(47,224,200,0.07) 46px 47px),
    repeating-radial-gradient(circle at 92% -18%, transparent 0 58px, rgba(44,107,255,0.06) 58px 59px);
  pointer-events:none;
  opacity:.85;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:start;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(143,166,184,0.5)}
.breadcrumb .current{color:var(--text)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  margin-bottom:18px;
  border-radius:6px;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--brand);
  border:1px solid rgba(47,224,200,0.4);
  background:rgba(47,224,200,0.07);
}
.hero-title{
  font-size:clamp(28px,4vw,44px);
  line-height:1.18;
  letter-spacing:.005em;
  margin-bottom:20px;
}
.hero-title span{color:var(--brand)}
.hero-lead{
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  max-width:640px;
}
.hero-lead + .hero-lead{margin-top:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{
  margin-top:20px;
  font-size:12px;
  color:var(--muted);
  letter-spacing:.02em;
}
.glass-panel{
  position:relative;
  border-radius:var(--radius-lg);
  background:var(--glass-bg);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.09),var(--shadow-soft);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:26px;
  overflow:hidden;
}
.glass-panel::after{
  content:"";
  position:absolute;
  top:-70px;right:-60px;
  width:170px;height:170px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,200,0.35),transparent 68%);
  animation:breathe 6s ease-in-out infinite;
  pointer-events:none;
}
@keyframes breathe{
  0%,100%{opacity:.35;transform:scale(1)}
  50%{opacity:.65;transform:scale(1.08)}
}
.panel-title{font-size:16px;margin-bottom:6px}
.panel-sub{font-size:13px;color:var(--muted);margin-bottom:18px}
.flow-list{display:flex;flex-direction:column;gap:14px;margin-bottom:22px}
.flow-item{display:flex;gap:12px;align-items:flex-start}
.flow-index{
  flex:0 0 auto;
  font-family:var(--mono);
  font-size:12px;
  color:var(--brand);
  padding-top:2px;
}
.flow-text{font-size:14px;line-height:1.7;color:var(--text)}
.flow-text strong{color:var(--title);display:block;font-size:14px;margin-bottom:2px}
.panel-btn{width:100%}

/* ---------- sections ---------- */
.section{padding:88px 0;position:relative}
.section-alt{padding:76px 0;background:linear-gradient(180deg,rgba(8,21,33,0.72),rgba(5,12,20,0.2))}
.section-head{max-width:720px;margin-bottom:44px}
.section-title{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:12px}
.section-sub{font-size:15px;color:var(--muted);line-height:1.85}
.section-title .dot{color:var(--brand)}

/* ---------- timeline ---------- */
.timeline{position:relative;max-width:880px}
.timeline::before{
  content:"";
  position:absolute;
  left:23px;top:14px;bottom:18px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,rgba(47,224,200,0.7),rgba(44,107,255,0.4),rgba(47,224,200,0.08));
}
.tl-item{position:relative;padding-left:66px;margin-bottom:30px}
.tl-item:last-child{margin-bottom:0}
.tl-dot{
  position:absolute;
  left:12px;top:2px;
  width:24px;height:24px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid rgba(47,224,200,0.45);
  background:var(--surface-2);
  color:var(--brand);
  font-family:var(--mono);
  font-size:11px;
  font-weight:700;
  transition:box-shadow .25s ease-out,border-color .25s ease-out;
}
.tl-item.is-current .tl-dot{
  border-color:var(--brand);
  background:rgba(47,224,200,0.14);
  box-shadow:0 0 0 4px rgba(47,224,200,0.10),0 0 18px rgba(47,224,200,0.5);
}
.tl-card{
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:rgba(255,255,255,0.028);
  padding:24px 26px;
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.tl-item.is-current .tl-card{
  border-color:rgba(47,224,200,0.42);
  background:linear-gradient(160deg,rgba(47,224,200,0.08),rgba(255,255,255,0.02));
}
.tl-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-card)}
.tl-title{font-size:18px;margin-bottom:8px}
.tl-text{font-size:14.5px;line-height:1.85;color:var(--muted)}
.tl-tip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:14px;
  padding:5px 10px;
  border-radius:6px;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--accent);
  background:rgba(255,122,89,0.12);
  border:1px solid rgba(255,122,89,0.28);
}
.tl-figure{margin-top:18px;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line)}
.tl-figure img{width:100%;height:190px;object-fit:cover;border-radius:var(--radius-md)}

/* ---------- notes ---------- */
.notes-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.note-card{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--surface-2);
  padding:26px 26px 24px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.note-card:hover{transform:translateY(-2px);border-color:rgba(47,224,200,0.45);box-shadow:var(--shadow-card)}
.note-index{
  display:inline-block;
  font-family:var(--mono);
  font-size:12px;
  color:var(--brand);
  letter-spacing:.08em;
  margin-bottom:12px;
}
.note-title{font-size:16px;margin-bottom:8px}
.note-text{font-size:14px;line-height:1.85;color:var(--muted)}

/* ---------- check bar ---------- */
.checkbar{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:28px;
  align-items:center;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(44,107,255,0.14),rgba(47,224,200,0.06));
  padding:32px 34px;
}
.checkbar-label{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--brand);
  font-family:var(--mono);
  margin-bottom:8px;
}
.checkbar-title{font-size:20px;line-height:1.4}
.checkbar-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 24px}
.checkbar-item{
  display:flex;
  gap:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--text);
}
.checkbar-item::before{
  content:"";
  flex:0 0 auto;
  width:8px;height:8px;
  margin-top:9px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(47,224,200,0.45);
}

/* ---------- faq ---------- */
.faq-max{max-width:820px}
.accordion{
  background:transparent;
  border:none;
  margin:0;
}
.accordion-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(255,255,255,0.03);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s ease-out,background .2s ease-out;
}
.accordion-item:hover{border-color:var(--line-strong)}
.accordion-item.is-active{
  border-color:rgba(47,224,200,0.45);
  background:rgba(47,224,200,0.05);
}
.accordion-title{
  position:relative;
  display:block;
  padding:18px 56px 18px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--title);
  background:transparent;
  border:none;
  cursor:pointer;
  width:100%;
  text-align:left;
  transition:color .2s ease-out;
}
.accordion-title:hover{color:#ffffff}
.accordion-item.is-active .accordion-title{color:var(--brand)}
.accordion-title::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(47,224,200,0.6);
  opacity:0;
  transition:opacity .2s ease-out;
}
.accordion-item.is-active .accordion-title::before{opacity:1}
.accordion-title::after{
  content:"";
  position:absolute;
  right:22px;top:50%;
  width:9px;height:9px;
  margin-top:-6px;
  border-right:1.6px solid var(--brand);
  border-bottom:1.6px solid var(--brand);
  transform:rotate(45deg);
  transition:transform .24s ease-out;
}
.accordion-item.is-active .accordion-title::after{transform:rotate(225deg);margin-top:-2px}
.accordion-content{
  display:none;
  padding:0 22px 20px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:14.5px;
  line-height:1.85;
  margin-top:0;
}
.accordion-item.is-active .accordion-content{display:block}
.accordion-content p{padding-top:16px}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  border-radius:22px;
  border:1px solid rgba(47,224,200,0.28);
  background:linear-gradient(120deg,rgba(44,107,255,0.22),rgba(47,224,200,0.10));
  padding:38px 40px;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-40px;bottom:-90px;
  width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,200,0.22),transparent 70%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.4;margin-bottom:10px}
.cta-band p{font-size:14px;color:var(--muted);max-width:520px}
.cta-band .btn{flex:0 0 auto}
.privacy-note{
  margin-top:22px;
  font-size:12.5px;
  line-height:1.85;
  color:var(--muted);
  max-width:820px;
}
.privacy-note a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}

/* ---------- modal ---------- */
.inquiry-modal{
  position:fixed;
  inset:0;
  z-index:200;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.inquiry-modal.is-open{display:flex}
.inquiry-backdrop{
  position:absolute;
  inset:0;
  background:rgba(3,8,14,0.72);
  backdrop-filter:blur(2px);
}
.inquiry-dialog{
  position:relative;
  width:100%;
  max-width:560px;
  max-height:90vh;
  overflow-y:auto;
  border-radius:22px;
  border:1px solid var(--glass-line);
  background:linear-gradient(180deg,rgba(12,27,41,0.98),rgba(8,21,33,0.98));
  box-shadow:0 40px 90px rgba(0,0,0,0.6),inset 0 1px 0 rgba(255,255,255,0.08);
  padding:30px;
  animation:modalIn .22s ease-out;
}
@keyframes modalIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.inquiry-close{
  position:absolute;
  top:16px;right:16px;
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,0.04);
  color:var(--text);
  font-size:20px;
  line-height:1;
  cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.inquiry-close:hover{background:rgba(255,122,89,0.14);color:#fff;border-color:rgba(255,122,89,0.5)}
.inquiry-dialog h2{font-size:20px;margin-bottom:8px}
.inquiry-sub{font-size:13.5px;color:var(--muted);margin-bottom:22px;line-height:1.8}
.form-row{margin-bottom:16px}
.form-label{display:block;font-size:13px;color:var(--text);margin-bottom:8px}
.form-label .req{color:var(--accent);margin-left:4px}
.form-control{
  width:100%;
  padding:12px 14px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,0.03);
  color:var(--text);
  font-size:14px;
  font-family:inherit;
  line-height:1.6;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.form-control::placeholder{color:rgba(143,166,184,0.7)}
.form-control:focus{
  outline:none;
  border-color:var(--brand);
  background:rgba(255,255,255,0.05);
  box-shadow:0 0 0 3px rgba(47,224,200,0.18);
}
select.form-control{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#2FE0C8 50%),linear-gradient(135deg,#2FE0C8 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
textarea.form-control{resize:vertical;min-height:88px}
.form-check{display:flex;gap:10px;align-items:flex-start;font-size:12.5px;line-height:1.8;color:var(--muted)}
.form-check input{margin-top:4px;width:16px;height:16px;accent-color:#2FE0C8;flex:0 0 auto}
.form-check a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.form-submit{width:100%;margin-top:20px}
.form-hint{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.75}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(8,21,33,0.9),rgba(5,12,20,1));
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2.6fr));
  gap:36px;
  padding-bottom:40px;
}
.footer-brand .brand-main{font-size:19px}
.footer-brand p{
  margin-top:14px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--muted);
  max-width:320px;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:var(--title);
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-link{
  position:relative;
  display:inline-block;
  font-size:13.5px;
  color:var(--muted);
  padding-left:0;
  transition:color .2s ease-out,padding-left .2s ease-out;
}
.footer-link::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:0;height:1px;
  background:var(--brand);
  transition:width .2s ease-out,transform .2s ease-out;
  transform:translateY(-50%);
}
.footer-link:hover{color:var(--brand);padding-left:14px}
.footer-link:hover::before{width:8px}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.8}
.footer-contact strong{color:var(--text);font-weight:600}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--muted);
}
.footer-bottom a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .wrap{padding:0 32px}
  .hero-grid{gap:36px}
  .footer-grid{grid-template-columns:minmax(0,3.4fr) repeat(3,minmax(0,2.8fr));gap:28px}
}
@media (max-width:1023px){
  .nav-links,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .hero{padding:44px 0 68px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .section{padding:68px 0}
  .section-alt{padding:60px 0}
  .notes-grid{grid-template-columns:minmax(0,1fr)}
  .checkbar{grid-template-columns:minmax(0,1fr);gap:20px;padding:28px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:639px){
  .wrap{padding:0 20px}
  body{font-size:15px}
  .header-inner{height:56px}
  .brand-main{font-size:18px}
  .brand-sub{font-size:10px;letter-spacing:.1em}
  .hero{padding:32px 0 56px}
  .hero-title{font-size:28px}
  .hero-lead{font-size:15px}
  .hero-actions{gap:12px}
  .btn{height:44px;padding:0 20px;font-size:14.5px;width:100%}
  .hero-actions .btn{width:100%}
  .section{padding:56px 0}
  .section-alt{padding:52px 0}
  .section-head{margin-bottom:30px}
  .tl-item{padding-left:52px}
  .timeline::before{left:19px}
  .tl-dot{left:8px;width:22px;height:22px;font-size:10px}
  .tl-card{padding:20px}
  .checkbar-list{grid-template-columns:minmax(0,1fr)}
  .accordion-title{font-size:15px;padding:16px 48px 16px 18px}
  .cta-band{padding:26px;border-radius:18px}
  .inquiry-modal{padding:0;align-items:flex-end}
  .inquiry-dialog{
    max-width:100%;
    max-height:92vh;
    border-radius:22px 22px 0 0;
    padding:26px 20px 30px;
  }
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:30px}
  .site-footer{padding:52px 0 24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .glass-panel::after{animation:none;opacity:.45}
}

/* roulang page: category2 */
:root{
  --bg:#050C14;
  --bg-2:#081521;
  --bg-3:#0C1B29;
  --mint:#2FE0C8;
  --mint-soft:rgba(47,224,200,.16);
  --deep:#2C6BFF;
  --coral:#FF7A59;
  --text:#C9D8E4;
  --muted:#8FA6B8;
  --line:rgba(120,220,255,.14);
  --line-strong:rgba(120,220,255,.26);
  --glass:rgba(255,255,255,.045);
  --glass-top:rgba(255,255,255,.09);
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-card:0 18px 48px rgba(0,0,0,.36);
  --shadow-soft:0 10px 30px rgba(0,0,0,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono: "SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 82% -10%, rgba(44,107,255,.16), transparent 62%),
    radial-gradient(720px 480px at 8% 0%, rgba(47,224,200,.10), transparent 58%),
    var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:var(--mint)}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;color:#EAF6FF;font-weight:700;line-height:1.3;letter-spacing:.01em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(47,224,200,.28);color:#04201D}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding-left:40px;padding-right:40px}
.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}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,12,20,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,rgba(47,224,200,.55),rgba(44,107,255,.5),rgba(47,224,200,.12));
  opacity:.85;
  pointer-events:none;
}
.nav-inner{
  min-height:72px;
  display:flex;
  align-items:center;
  gap:28px;
}
.brand{
  display:flex;
  flex-direction:column;
  justify-content:center;
  line-height:1.15;
  padding:6px 0;
  flex-shrink:0;
}
.brand-main{
  font-size:21px;
  font-weight:800;
  letter-spacing:.02em;
  color:#F2FBFF;
}
.brand-main em{
  font-style:normal;
  color:var(--mint);
  text-shadow:0 0 18px rgba(47,224,200,.35);
}
.brand-sub{
  font-size:10.5px;
  letter-spacing:.22em;
  color:var(--muted);
  margin-top:4px;
  text-transform:uppercase;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:12px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  font-size:14.5px;
  color:var(--muted);
  border-radius:8px;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:#E9FFFB;background:rgba(47,224,200,.07)}
.nav-link.is-active{
  color:#E9FFFB;
  background:rgba(47,224,200,.10);
  text-shadow:0 0 12px rgba(47,224,200,.45);
}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:-1px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--mint),rgba(44,107,255,.9));
  box-shadow:0 0 12px rgba(47,224,200,.45);
}
.nav-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-strong);
  border-radius:10px;
  color:#E9FFFB;
  cursor:pointer;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--mint);border-radius:2px;
  box-shadow:0 -6px 0 rgba(47,224,200,.8),0 6px 0 rgba(47,224,200,.8);
}
.nav-toggle[aria-expanded="true"]{background:rgba(47,224,200,.12)}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  color:#031516;
  background:linear-gradient(120deg,#2C6BFF 0%,#2FE0C8 82%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35),0 10px 24px rgba(44,107,255,.22);
}
.btn-primary:hover{
  color:#031516;
  transform:translateY(-2px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 0 22px rgba(47,224,200,.38),0 14px 30px rgba(44,107,255,.24);
}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 0 12px rgba(47,224,200,.2)}
.btn-ghost{
  color:var(--mint);
  background:transparent;
  border-color:rgba(47,224,200,.45);
}
.btn-ghost:hover{
  color:#E9FFFB;
  background:rgba(47,224,200,.10);
  border-color:rgba(47,224,200,.7);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);background:rgba(47,224,200,.06)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}

/* ============ Breadcrumb ============ */
.breadcrumb-bar{
  padding:22px 0 0;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--mint)}
.breadcrumb .sep{color:rgba(143,166,184,.55)}
.breadcrumb .current{color:#DCEBF6}

/* ============ Hero ============ */
.faq-hero{
  position:relative;
  padding:64px 0 72px;
  text-align:center;
  overflow:hidden;
  isolation:isolate;
}
.faq-hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-2;
  background:
    linear-gradient(180deg,rgba(5,12,20,.42) 0%,rgba(5,12,20,.86) 60%,var(--bg) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.55;
}
.faq-hero::after{
  content:"";
  position:absolute;
  left:50%;top:-120px;
  width:920px;height:520px;
  transform:translateX(-50%);
  z-index:-1;
  background:
    repeating-radial-gradient(ellipse at 50% 0%,rgba(120,220,255,.10) 0 1px,transparent 1px 26px);
  opacity:.55;
  pointer-events:none;
  mask-image:radial-gradient(ellipse at 50% 20%,#000 20%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 20%,#000 20%,transparent 72%);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 14px;
  border-radius:999px;
  border:1px solid rgba(47,224,200,.35);
  background:rgba(47,224,200,.07);
  color:#BFF7EE;
  font-size:12.5px;
  letter-spacing:.08em;
}
.eyebrow i{
  width:6px;height:6px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 10px rgba(47,224,200,.8);
  display:inline-block;
}
.faq-hero h1{
  margin:24px auto 0;
  max-width:860px;
  font-size:clamp(28px,4vw,46px);
  line-height:1.22;
  letter-spacing:.01em;
}
.faq-hero h1 .accent{
  color:var(--mint);
  text-shadow:0 0 26px rgba(47,224,200,.28);
  white-space:nowrap;
}
.hero-lead{
  max-width:720px;
  margin:20px auto 0;
  font-size:16.5px;
  line-height:1.85;
  color:#AFC4D4;
}
.hero-tags{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 13px;
  border-radius:6px;
  font-size:12px;
  letter-spacing:.04em;
  color:#BFF7EE;
  border:1px solid rgba(47,224,200,.28);
  background:rgba(47,224,200,.06);
}
.tag.coral{
  color:#FFD9CF;
  border-color:rgba(255,122,89,.4);
  background:rgba(255,122,89,.14);
}
.hero-actions{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.hero-note{
  margin-top:18px;
  font-size:12.5px;
  color:rgba(143,166,184,.84);
  letter-spacing:.02em;
}

/* ============ Section base ============ */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.section-head{
  max-width:760px;
  margin:0 auto 44px;
  text-align:center;
}
.section-head.left{margin-left:0;text-align:left}
.section-kicker{
  display:inline-block;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--mint);
  margin-bottom:12px;
  text-transform:uppercase;
}
.section-head h2{
  font-size:clamp(23px,2.6vw,32px);
  line-height:1.32;
}
.section-head p{
  margin:14px 0 0;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
}

/* ============ QA Grid ============ */
.qa-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.qa-card{
  position:relative;
  padding:26px 26px 22px;
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.028));
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft),inset 0 1px 0 var(--glass-top);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  display:flex;
  flex-direction:column;
}
.qa-card:hover{
  transform:translateY(-2px);
  border-color:rgba(47,224,200,.42);
  box-shadow:0 22px 54px rgba(0,0,0,.42),inset 0 1px 0 var(--glass-top);
}
.qa-num{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  color:rgba(47,224,200,.85);
  margin-bottom:10px;
  font-variant-numeric:tabular-nums;
}
.qa-card h3{
  font-size:17px;
  line-height:1.5;
  color:#EDF9FF;
}
.qa-card h3 .qmark{
  color:var(--mint);
  margin-right:6px;
  font-weight:800;
}
.qa-card p{
  margin:12px 0 0;
  font-size:14.5px;
  line-height:1.85;
  color:#A9BECD;
}
.qa-card .qa-foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:var(--muted);
}
.qa-card .qa-foot a{
  color:var(--mint);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.qa-card .qa-foot a:hover{color:#E9FFFB}
.qa-card .qa-foot a .arrow{
  transition:transform .2s var(--ease);
}
.qa-card .qa-foot a:hover .arrow{transform:translateX(4px)}

/* ============ Self-check band ============ */
.selfcheck-band{
  padding:32px 0;
}
.selfcheck-inner{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:36px;
  align-items:center;
  padding:34px;
  border-radius:22px;
  background:
    radial-gradient(700px 260px at 12% 0%,rgba(47,224,200,.10),transparent 62%),
    linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card),inset 0 1px 0 var(--glass-top);
}
.selfcheck-copy .label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--mint);
  margin-bottom:14px;
}
.selfcheck-copy .label::before{
  content:"";
  width:20px;height:1px;
  background:linear-gradient(90deg,var(--mint),transparent);
}
.selfcheck-copy h2{
  font-size:clamp(21px,2.3vw,27px);
  line-height:1.4;
  margin-bottom:16px;
}
.check-list{display:grid;gap:12px}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:14.5px;
  line-height:1.8;
  color:#AFC4D4;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:12px;height:12px;
  border-radius:4px;
  border:1px solid rgba(47,224,200,.55);
  background:rgba(47,224,200,.12);
  box-shadow:0 0 10px rgba(47,224,200,.18);
}
.check-list li strong{color:#E6F6FF;font-weight:600}
.selfcheck-media{
  position:relative;
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 24px 50px rgba(0,0,0,.4);
  aspect-ratio:16/10;
}
.selfcheck-media img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
}
.selfcheck-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,12,20,.04),rgba(5,12,20,.52));
  pointer-events:none;
}
.selfcheck-media .media-cap{
  position:absolute;
  left:16px;bottom:14px;
  z-index:2;
  font-size:12px;
  color:#CFE6F3;
  padding:6px 12px;
  border-radius:999px;
  background:rgba(5,12,20,.6);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(8px);
}

/* ============ Accordion FAQ ============ */
.faq-wrap{max-width:840px;margin:0 auto}
.faq-accordion{
  display:grid;
  gap:12px;
}
.faq-item{
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.032);
  overflow:hidden;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.faq-item[open]{
  border-color:rgba(47,224,200,.42);
  background:rgba(47,224,200,.045);
  box-shadow:inset 0 1px 0 var(--glass-top),0 14px 32px rgba(0,0,0,.28);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  position:relative;
  padding:19px 56px 19px 24px;
  font-size:15.5px;
  font-weight:600;
  color:#E4F3FF;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--mint);background:rgba(47,224,200,.05)}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:2px;
  border-radius:2px;
  background:var(--mint);
  opacity:0;
  transition:opacity .2s var(--ease);
  box-shadow:0 0 12px rgba(47,224,200,.65);
}
.faq-item[open] summary{color:var(--mint)}
.faq-item[open] summary::before{opacity:1}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:22px;top:50%;
  width:9px;height:9px;
  border-right:1.6px solid currentColor;
  border-bottom:1.6px solid currentColor;
  transform:translateY(-70%) rotate(45deg);
  transition:transform .24s var(--ease);
  opacity:.8;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.faq-answer{
  padding:0 24px 22px;
  color:#A9BECD;
  font-size:14.5px;
  line-height:1.85;
  max-width:780px;
}
.faq-answer p{margin:0 0 .8em}
.faq-answer p:last-child{margin-bottom:0}

/* ============ CTA band ============ */
.cta-band{
  margin:16px 0 0;
  padding:36px 40px;
  border-radius:22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  background:
    radial-gradient(600px 240px at 90% 10%,rgba(44,107,255,.24),transparent 62%),
    radial-gradient(520px 240px at 6% 90%,rgba(47,224,200,.14),transparent 60%),
    linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card),inset 0 1px 0 var(--glass-top);
}
.cta-band h2{
  font-size:clamp(20px,2.3vw,26px);
  line-height:1.4;
}
.cta-band p{
  margin:10px 0 0;
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
  max-width:560px;
}

/* ============ Privacy note ============ */
.privacy-note{
  margin-top:28px;
  padding:20px 24px;
  border-radius:14px;
  border:1px dashed rgba(120,220,255,.24);
  background:rgba(255,255,255,.02);
  font-size:12.5px;
  line-height:1.85;
  color:rgba(159,181,197,.92);
}
.privacy-note strong{color:#CFE6F3;font-weight:600}
.privacy-note a{color:var(--mint);text-decoration:underline;text-underline-offset:3px}

/* ============ Footer ============ */
.site-footer{
  margin-top:72px;
  background:linear-gradient(180deg,rgba(8,21,33,.4),rgba(5,12,20,.94));
  border-top:1px solid var(--line);
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.15fr;
  gap:36px;
}
.footer-brand .brand-main{font-size:20px}
.footer-brand p{
  margin:14px 0 0;
  font-size:13.5px;
  line-height:1.85;
  color:var(--muted);
  max-width:320px;
}
.footer-title{
  font-size:13px;
  letter-spacing:.14em;
  color:#D8ECF8;
  margin-bottom:16px;
  font-weight:600;
}
.footer-list{display:grid;gap:10px}
.footer-link{
  position:relative;
  display:inline-block;
  font-size:14px;
  color:var(--muted);
  padding-left:0;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-link::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:0;height:1px;
  background:var(--mint);
  transform:translateY(-50%);
  transition:width .2s var(--ease);
  box-shadow:0 0 8px rgba(47,224,200,.6);
}
.footer-link:hover{color:var(--mint);padding-left:14px}
.footer-link:hover::before{width:8px}
.footer-contact{display:grid;gap:12px;font-size:13.5px;color:var(--muted)}
.footer-contact strong{color:#D8ECF8;font-weight:600;margin-right:4px}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:rgba(143,166,184,.82);
}
.footer-bottom a{color:rgba(143,166,184,.92);text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:var(--mint)}

/* ============ Responsive ============ */
@media (max-width:1199px){
  .wrap{padding-left:32px;padding-right:32px}
  .section{padding:76px 0}
}
@media (max-width:1023px){
  .nav-inner{min-height:64px;gap:20px}
  .nav-link{padding:0 12px;font-size:14px}
  .qa-grid{gap:18px}
  .selfcheck-inner{grid-template-columns:1fr;gap:26px;padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-band{padding:30px;flex-direction:column;align-items:flex-start}
  .faq-hero{padding:52px 0 58px}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-links{
    position:absolute;
    top:100%;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    margin:0;
    padding:10px 20px 18px;
    background:#081521;
    border-bottom:1px solid var(--line-strong);
    box-shadow:0 26px 50px rgba(0,0,0,.45);
    display:none;
  }
  .nav-links.is-open{display:flex;animation:navDrop .22s var(--ease)}
  .nav-link{
    height:48px;
    border-radius:8px;
    padding-left:16px;
    border-left:2px solid transparent;
  }
  .nav-link.is-active{
    border-left-color:var(--mint);
    background:rgba(47,224,200,.07);
    box-shadow:none;
  }
  .nav-link.is-active::after{display:none}
  .nav-inner{position:relative}
  .qa-grid{grid-template-columns:1fr}
}
@keyframes navDrop{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:translateY(0)}
}
@media (max-width:639px){
  .wrap{padding-left:20px;padding-right:20px}
  body{font-size:15px}
  .section{padding:56px 0}
  .section.tight{padding:46px 0}
  .faq-hero{padding:40px 0 48px}
  .faq-hero h1{font-size:27px}
  .hero-lead{font-size:15px}
  .btn{height:46px;padding:0 20px;font-size:14.5px;width:100%}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .qa-card{padding:22px 20px 18px}
  .qa-card h3{font-size:16px}
  .selfcheck-inner{padding:22px;border-radius:18px}
  .selfcheck-media{aspect-ratio:16/11}
  .cta-band{padding:24px 22px;border-radius:18px}
  .cta-band .btn{width:100%}
  .faq-item summary{padding:16px 48px 16px 20px;font-size:14.5px}
  .faq-answer{padding:0 20px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 22px;margin-top:56px}
  .footer-bottom{flex-direction:column;gap:8px}
  .breadcrumb-bar{padding-top:16px}
  .hero-tags{gap:8px}
  .tag{font-size:11.5px;padding:5px 11px}
}
@media (max-width:380px){
  .faq-hero h1{font-size:24px}
  .brand-main{font-size:19px}
  .brand-sub{letter-spacing:.16em;font-size:10px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .qa-card:hover,.btn:hover{transform:none}
}
/* Foundation 默认元素覆盖 */
button, .button{font-family:var(--font)}
.accordion{border:0;background:transparent}
.reveal{background:var(--bg-2);border:1px solid var(--line-strong);color:var(--text)}
a{color:inherit}
a:hover{color:var(--mint)}