/* roulang page: index */
:root{
  --bg-0:#050b16;
  --bg-1:#0b1226;
  --bg-2:#0e1830;
  --brand:#46b9ff;
  --brand-deep:#2f80ff;
  --aqua:#49e6d2;
  --gold:#e9c46a;
  --white:#edf2ff;
  --muted:#b6c3da;
  --weak:#7b8bab;
  --line:rgba(255,255,255,.09);
  --glass-1:linear-gradient(135deg, rgba(255,255,255,.09), rgba(255,255,255,.03));
  --glass-bg:rgba(13,23,50,.58);
  --panel-bg:rgba(15,26,48,.72);
  --radius:16px;
  --radius-lg:24px;
  --radius-sm:8px;
  --shadow-lg:0 18px 50px rgba(0,0,0,.45);
  --font-stack:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",system-ui,sans-serif;
}

*,
*::before,
*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg-0);
  background-image:
    radial-gradient(circle at 78% 8%, rgba(59,130,246,.12), transparent 26%),
    radial-gradient(circle at 18% 38%, rgba(73,230,210,.07), transparent 20%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 48%, var(--bg-0) 100%);
  color:var(--white);
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;height:auto;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .25s ease, background .25s ease, border-color .25s ease, opacity .25s ease, transform .25s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}

h1,h2,h3,h4{
  font-family:var(--font-stack);
  text-wrap:balance;
  line-height:1.22;
  margin:0;
  letter-spacing:-.015em;
}

h1{font-size:clamp(32px,4.9vw,54px);font-weight:800;}
h2{font-size:clamp(25px,3.1vw,36px);font-weight:800;letter-spacing:-.01em;}
h3{font-size:20px;font-weight:700;margin:0 0 10px;line-height:1.45;}
h4{font-size:16px;font-weight:700;margin:0 0 8px;color:#dce7ff;}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible{
  outline:2px solid var(--aqua);
  outline-offset:3px;
  border-radius:6px;
}

::selection{background:rgba(73,230,210,.24);color:#fff;}

.site-container{max-width:1200px;margin-inline:auto;padding-inline:32px;}
.anchor{scroll-margin-top:100px;}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,11,22,.82);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}

.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:72px;
  justify-content:space-between;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  font-size:21px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--white);
  min-width:max-content;
}

.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:26px;
  height:26px;
  border-radius:50%;
  position:relative;
  background:radial-gradient(circle, rgba(70,185,255,.92) 0%, rgba(70,185,255,.1) 100%);
}

.brand-mark::before{
  content:"";
  width:10px;
  height:10px;
  background:var(--white);
  border-radius:50%;
  box-shadow:0 0 18px rgba(70,185,255,1);
}

.brand-mark::after{
  content:"";
  position:absolute;
  inset:-10px;
  border:1px dashed rgba(120,200,255,.42);
  border-radius:50%;
  animation:orbit 26s linear infinite;
}

@keyframes orbit{
  to{transform:rotate(360deg);}
}

.brand b{
  color:var(--aqua);
  font-weight:700;
  margin-left:2px;
}

.nav-toggle{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none;}

.site-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-inline-start:auto;
}

.site-nav a{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:8px;
  color:var(--muted);
  font-size:15px;
  font-weight:500;
  position:relative;
}

.site-nav a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-5px;
  transform:translateX(-50%);
  width:0;
  height:3px;
  border-radius:3px;
  background:var(--brand);
  transition:width .25s ease;
}

.site-nav a:hover{
  color:var(--white);
  background:rgba(255,255,255,.04);
}

.site-nav a:hover::after{
  width:20px;
}

.site-nav a.is-active{
  color:#fff;
}

.site-nav a.is-active::after{
  width:20px;
}

.nav-cta{
  margin-left:10px;
  background:linear-gradient(135deg, var(--brand), #2563eb);
  color:#fff !important;
  border-radius:8px;
  padding:0 20px !important;
  height:40px !important;
  box-shadow:0 0 0 rgba(70,185,255,0);
  transition:all .25s ease;
}

.nav-cta:hover{
  background:linear-gradient(135deg, #56c8ff, #2b6bf0);
  color:#fff !important;
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(59,130,246,.28);
}

.nav-cta::after{display:none;}

.nav-cta.is-active::after{display:none;}

.nav-burger{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:8px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--white);
  cursor:pointer;
  font-size:19px;
  margin-left:auto;
}

/* Hero */
.hero{
  position:relative;
  min-height:92vh;
  display:flex;
  align-items:center;
  overflow:hidden;
  padding:88px 0 72px;
}

.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url("/assets/images/backpic/back-1.png") center center / cover no-repeat;
  opacity:.42;
}

.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(72deg, rgba(5,11,22,.98) 0%, rgba(5,11,22,.84) 38%, rgba(6,14,29,.5) 70%, rgba(6,14,29,.78) 100%),
    radial-gradient(circle at 72% 20%, rgba(70,185,255,.18), transparent 38%);
}

.hero-content{
  position:relative;
  z-index:2;
}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(380px,.95fr);
  gap:66px;
  align-items:center;
}

.hero-orb{
  display:inline-flex;
  align-items:center;
  gap:9px;
  border:1px solid rgba(70,185,255,.3);
  background:rgba(70,185,255,.08);
  color:#c9ecff;
  border-radius:999px;
  padding:7px 15px;
  font-size:13px;
  margin-bottom:24px;
  letter-spacing:.01em;
}

.hero-orb .pulse{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--aqua);
  box-shadow:0 0 0 rgba(73,230,210,.5);
  animation:pulse 2.6s infinite;
}

@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(73,230,210,.35);}
  70%{box-shadow:0 0 0 9px rgba(73,230,210,0);}
  100%{box-shadow:0 0 0 0 rgba(73,230,210,0);}
}

.hero h1{
  margin-bottom:22px;
  max-width:690px;
}

.hero h1 .line{
  color:var(--brand);
}

.hero-lead{
  color:var(--muted);
  font-size:17px;
  line-height:1.95;
  max-width:580px;
  margin-bottom:34px;
}

.hero-btns{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  align-items:center;
  margin-bottom:36px;
}

.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  background:linear-gradient(135deg, var(--aqua), var(--brand-deep));
  color:#03212c;
  font-weight:700;
  border:none;
  border-radius:10px;
  padding:0 27px;
  height:50px;
  font-size:15px;
  box-shadow:0 8px 26px rgba(70,185,255,.22);
  cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, filter .2s ease;
}

.btn-primary:hover{
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 14px 34px rgba(70,185,255,.3);
  color:#00121c;
}

.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 5px 16px rgba(70,185,255,.35);
}

.btn-secondary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  background:transparent;
  border:1px solid rgba(255,255,255,.32);
  color:var(--white);
  border-radius:10px;
  padding:0 25px;
  height:50px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:border-color .3s ease, background .3s ease, color .3s ease;
}

.btn-secondary:hover{
  border-color:rgba(73,230,210,.75);
  background:rgba(73,230,210,.08);
  color:var(--aqua);
}

.hero-assurance{
  display:flex;
  flex-wrap:wrap;
  gap:11px;
}

.assure-chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--weak);
  font-size:13px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.07);
  border-radius:999px;
  padding:5px 13px;
}

.assure-chip i{
  color:var(--aqua);
  font-size:12px;
}

.hero-panel{
  position:relative;
  padding:26px;
  border-radius:24px;
  background:rgba(12,24,48,.68);
  border:1px solid rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  box-shadow:0 22px 60px rgba(0,0,0,.35);
}

.hero-panel::before{
  content:"";
  position:absolute;
  top:0;
  left:34px;
  right:34px;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.75), transparent);
}

.panel-title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid rgba(255,255,255,.08);
  padding-bottom:14px;
  margin-bottom:16px;
}

.panel-title span{
  font-size:14px;
  color:#e2eaff;
  font-weight:700;
  letter-spacing:.05em;
}

.panel-title small{
  color:var(--weak);
  font-size:12px;
}

.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:9px;
  margin:0 0 14px;
}

.metric-grid.two{
  grid-template-columns:repeat(2,1fr);
  gap:11px;
  margin-bottom:5px;
}

.metric-item{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.08);
  padding:15px 10px 12px;
  border-radius:16px;
  text-align:center;
}

.metric-grid.two .metric-item{
  text-align:left;
  padding:18px;
  margin-bottom:8px;
}

.metric-item .num{
  display:block;
  font-size:clamp(26px,2vw,36px);
  font-weight:800;
  color:#fff;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  line-height:1;
  margin-bottom:6px;
}

.metric-grid.two .metric-item .num{
  display:inline-block;
  font-size:33px;
}

.metric-grid.two .metric-item .num span{
  font-size:16px;
  font-weight:600;
  color:var(--muted);
  margin-left:3px;
}

.metric-item .lbl{
  color:#b0bfd9;
  font-size:12px;
  line-height:1.4;
}

.metric-grid.two .metric-item .lbl{
  margin-left:4px;
}

.metric-up{
  color:var(--aqua);
  font-size:11px;
  margin-left:3px;
  letter-spacing:0;
  white-space:nowrap;
}

.panel-note{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:12px;
  padding:13px 15px;
  border-radius:12px;
  background:rgba(73,230,210,.07);
  border:1px solid rgba(73,230,210,.17);
  color:#dbf8f4;
  font-size:13px;
}

.panel-note i{
  color:var(--aqua);
}

/* Sections */
.section{
  padding:104px 0;
}

.section-tight{
  padding:66px 0;
}

.section-head{
  display:flex;
  align-items:flex-end;
  gap:28px;
  margin-bottom:48px;
}

.section-head-head{
  max-width:700px;
}

.index-label{
  display:block;
  color:var(--brand);
  font-size:13px;
  font-weight:700;
  letter-spacing:.18em;
  margin-bottom:10px;
}

.section-head p{
  color:var(--muted);
  font-size:16px;
  margin-top:14px;
  max-width:640px;
}

.section-link{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:#b6cbeb;
  font-size:14px;
  font-weight:600;
  border-bottom:1px solid transparent;
}

.section-link i{
  transition:transform .25s ease;
  color:var(--brand);
}

.section-link:hover{
  color:var(--aqua);
  border-color:rgba(73,230,210,.4);
}

.section-link:hover i{
  transform:translateX(4px);
}

/* News / CMS area */
.news-section{
  background:linear-gradient(180deg, rgba(8,16,32,.28) 0%, rgba(5,11,22,0) 100%);
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.06);
}

.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}

.news-card{
  display:flex;
  flex-direction:column;
  overflow:hidden;
  background:var(--glass-bg);
  border:1px solid var(--line);
  border-radius:18px;
  transition:transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  height:100%;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

.news-card:hover{
  transform:translateY(-5px);
  border-color:rgba(70,185,255,.65);
  box-shadow:0 20px 42px rgba(0,0,0,.38);
}

.news-thumb{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 8.2;
  background:var(--bg-2);
}

.news-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}

.news-card:hover .news-thumb img{
  transform:scale(1.04);
}

.news-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(5,11,22,0) 48%, rgba(5,11,22,.35) 100%);
}

.news-body{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:11px;
  padding:22px 22px 20px;
  flex:1;
}

.news-tag-row{
  display:flex;
  align-items:center;
  gap:9px;
}

.news-tag{
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  padding:3px 12px;
  font-size:12px;
  border:1px solid rgba(70,185,255,.26);
  background:rgba(70,185,255,.08);
  color:#9dd6ff;
  letter-spacing:.04em;
}

.news-date{
  font-size:13px;
  color:var(--weak);
  display:inline-flex;
  align-items:center;
  gap:7px;
}

.news-date i{
  font-size:11px;
  color:var(--weak);
}

.news-title{
  font-size:18px;
  line-height:1.55;
  font-weight:700;
  margin:0;
}

.news-title a{
  color:#e8eefc;
  background-size:0 1px;
}

.news-title a:hover{
  color:var(--aqua);
}

.news-summary{
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin:2px 0 0;
}

.news-more{
  margin-top:auto;
  padding-top:8px;
  color:var(--brand);
  font-size:13px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:7px;
}

.news-arrow{
  width:18px;
  height:18px;
  border-radius:50%;
  border:1px solid rgba(70,185,255,.5);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:10px;
  transition:transform .25s ease, background .25s ease;
}

.news-card:hover .news-arrow{
  transform:translateX(3px);
  background:rgba(70,185,255,.18);
}

.news-empty{
  grid-column:1 / -1;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:17px;
  border:1px dashed rgba(255,255,255,.14);
  border-radius:20px;
  background:rgba(8,16,34,.45);
  padding:78px 30px;
  text-align:center;
  color:var(--muted);
}

.news-empty i{
  font-size:46px;
  color:rgba(255,255,255,.38);
}

.news-empty .state-star{
  width:62px;
  height:62px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
}

/* Channel entry */
.entry-band{
  background:transparent;
  position:relative;
}

.channel-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
}

.channel-card{
  position:relative;
  min-height:245px;
  display:flex;
  align-items:flex-end;
  overflow:hidden;
  border-radius:22px;
  border:1px solid rgba(255,255,255,.12);
}

.channel-card .channel-bg{
  position:absolute;
  inset:0;
  object-fit:cover;
  width:100%;
  height:100%;
  transition:transform .7s ease;
}

.channel-card:hover .channel-bg{
  transform:scale(1.045);
}

.channel-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(9,16,34,0) 5%, rgba(4,10,20,.48) 48%, rgba(4,9,18,.95) 100%);
}

.channel-content{
  position:relative;
  z-index:2;
  padding:30px 27px 28px;
  width:100%;
}

.channel-content h3{
  color:#fff;
  font-size:22px;
  margin-bottom:5px;
}

.channel-content p{
  color:#cbd4e8;
  font-size:14px;
  line-height:1.8;
  max-width:500px;
}

.channel-go{
  margin-top:13px;
  font-size:13px;
  font-weight:700;
  color:var(--aqua);
  display:inline-flex;
  align-items:center;
  gap:8px;
}

.channel-go i{
  transition:transform .25s ease;
}

.channel-card:hover .channel-go i{
  transform:translateX(4px);
}

/* Service matrix */
.service-bg{
  background:
    radial-gradient(circle at 8% 24%, rgba(70,185,255,.07), transparent 22%),
    radial-gradient(circle at 92% 72%, rgba(73,230,210,.05), transparent 26%);
}

.service-wrap{
  display:grid;
  gap:58px;
}

.service-row{
  display:grid;
  grid-template-columns:0.85fr 1.15fr;
  gap:50px;
  align-items:center;
}

.service-row:nth-child(even) .service-media{
  order:2;
}

.service-media{
  position:relative;
}

.cover-frame{
  border-radius:22px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.14);
  background:var(--bg-1);
  box-shadow:0 20px 55px rgba(0,0,0,.34);
}

.cover-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  min-height:280px;
}

.cover-badge{
  position:absolute;
  bottom:19px;
  left:19px;
  background:rgba(5,12,26,.82);
  border:1px solid rgba(255,255,255,.12);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  color:#fff;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
}

.cover-badge i{
  color:var(--gold);
  margin-right:6px;
}

.service-text{
  padding:18px 0;
}

.service-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--brand);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  margin-bottom:14px;
}

.service-text h3{
  font-size:24px;
  font-weight:800;
  margin-bottom:14px;
}

.service-text p{
  color:var(--muted);
  line-height:1.95;
  font-size:15px;
}

.feature-list{
  margin-top:22px;
  display:grid;
  grid-template-columns:1fr;
  gap:11px;
}

.feature-list li{
  display:flex;
  gap:12px;
  color:#dce5f5;
  font-size:14px;
  padding:11px 14px;
  background:rgba(255,255,255,.034);
  border:1px solid rgba(255,255,255,.07);
  border-radius:12px;
}

.feature-list li i{
  color:var(--aqua);
  margin-top:3px;
  font-size:13px;
}

/* Compare */
.compare-bg{
  background:linear-gradient(180deg, rgba(8,16,32,.55), rgba(5,11,22,0));
  border-top:1px solid rgba(255,255,255,.07);
}

.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
  margin-bottom:36px;
}

.compare-box{
  background:rgba(255,255,255,.032);
  border:1px solid rgba(255,255,255,.09);
  border-radius:20px;
  padding:27px 27px 21px;
}

.compare-box.best{
  position:relative;
  background:linear-gradient(165deg, rgba(233,196,106,.09), rgba(70,185,255,.04));
  border:1px solid rgba(233,196,106,.48);
}

.compare-box .box-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:800;
  padding-bottom:14px;
  margin-bottom:10px;
  border-bottom:1px solid rgba(255,255,255,.08);
}

.compare-box.best .box-title{
  color:#ffd97c;
}

.compare-box .box-title i{
  color:var(--weak);
}

.compare-table{
  display:grid;
}

.compare-row{
  display:grid;
  grid-template-columns:110px 1fr;
  gap:12px;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.06);
  font-size:14px;
}

.compare-row:last-child{
  border-bottom:none;
}

.compare-row span{
  color:var(--weak);
}

.compare-row b{
  font-weight:500;
  color:#d6e0f1;
}

.compare-row b.correct{
  color:var(--aqua);
  font-weight:600;
}

.compare-row i{
  color:var(--gold);
  margin-right:2px;
}

.compare-cta{
  text-align:center;
}

.compare-cta .btn-primary{
  background:linear-gradient(135deg, var(--gold), var(--brand-deep));
  box-shadow:0 8px 28px rgba(233,196,106,.18);
  color:#08111f;
}

.compare-cta .btn-primary:hover{
  box-shadow:0 13px 32px rgba(233,196,106,.3);
}

/* FAQ */
.faq-section{
  padding:110px 0;
}

.faq-wrap{
  max-width:800px;
  margin-inline:auto;
}

.faq-wrap .section-head{
  display:block;
  text-align:center;
  margin-bottom:42px;
}

.faq-item{
  margin-bottom:13px;
  border-radius:15px;
  background:var(--glass-bg);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color .25s ease, background .25s ease;
}

.faq-item:hover{
  border-color:rgba(70,185,255,.38);
}

.faq-item summary{
  position:relative;
  cursor:pointer;
  list-style:none;
  display:flex;
  align-items:center;
  gap:14px;
  padding:20px 24px;
  font-weight:700;
  color:#e8edf8;
  font-size:16px;
  white-space:normal;
}

.faq-item summary::-webkit-details-marker{display:none;}

.faq-item summary .q-num{
  flex:0 0 30px;
  width:30px;
  height:30px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid rgba(70,185,255,.3);
  color:var(--brand);
  font-family:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size:13px;
  font-weight:700;
}

.faq-item summary::after{
  content:"";
  flex:0 0 14px;
  width:14px;
  height:14px;
  margin-left:auto;
  border-right:1.6px solid rgba(255,255,255,.8);
  border-bottom:1.6px solid rgba(255,255,255,.8);
  transform:rotate(45deg);
  transition:transform .3s ease;
}

.faq-item[open] summary::after{
  transform:rotate(-135deg);
}

.faq-item[open]{
  background:rgba(70,185,255,.055);
  border-color:rgba(70,185,255,.35);
}

.faq-answer{
  padding:0 28px 25px 68px;
  color:var(--muted);
  font-size:15px;
  line-height:1.95;
}

.faq-answer p{
  margin-bottom:15px;
}

.faq-answer p:last-child{
  margin-bottom:0;
}

.faq-more{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--aqua);
  font-size:13px;
  font-weight:600;
  margin-top:10px;
}

.faq-more i{
  font-size:11px;
}

/* CTA form */
.cta-shell{
  position:relative;
  border-top:1px solid rgba(255,255,255,.06);
  background:
    radial-gradient(circle at 20% 20%, rgba(70,185,255,.08), transparent 30%),
    linear-gradient(160deg, rgba(8,16,34,.5) 0%, rgba(5,10,22,.42) 100%);
  padding:112px 0;
}

.cta-inner{
  max-width:960px;
  margin-inline:auto;
}

.cta-inner .section-head{
  text-align:center;
  justify-content:center;
  display:block;
  margin-bottom:34px;
}

.cta-inner .index-label{
  margin-bottom:8px;
}

.cta-inner .section-head p{
  margin-left:auto;
  margin-right:auto;
  margin-top:12px;
}

.form-card{
  background:rgba(12,24,48,.72);
  border:1px solid rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(17px);
  backdrop-filter:blur(17px);
  border-radius:26px;
  padding:32px;
}

.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:15px;
}

.form-item{
  display:flex;
  flex-direction:column;
  gap:7px;
}

.form-item.full{
  grid-column:1 / -1;
}

.form-item label{
  color:#c2cee4;
  font-size:13px;
  font-weight:600;
}

.form-item input,
.form-item select,
.form-item textarea{
  width:100%;
  background:rgba(2,8,20,.45);
  border:1px solid rgba(255,255,255,.12);
  border-radius:12px;
  color:#e9efff;
  padding:12px 15px;
  transition:border-color .25s ease, background .25s ease, box-shadow .25s ease;
  outline:none;
  min-height:50px;
}

.form-item textarea{
  min-height:130px;
  resize:vertical;
}

.form-item input:focus,
.form-item select:focus,
.form-item textarea:focus{
  border-color:rgba(73,230,210,.62);
  background:rgba(6,15,34,.55);
  box-shadow:0 0 0 4px rgba(73,230,210,.08);
}

.form-item input::placeholder,
.form-item textarea::placeholder{
  color:rgba(126,145,175,.7);
}

.form-submit{
  margin-top:22px;
  text-align:center;
}

.glow-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:52px;
  padding:0 40px;
  border:none;
  border-radius:12px;
  background:linear-gradient(135deg, var(--brand), #2563eb);
  color:#fff;
  font-weight:800;
  font-size:15px;
  cursor:pointer;
  box-shadow:0 0 18px rgba(70,185,255,.24), 0 6px 22px rgba(37,99,235,.24);
  transition:transform .2s ease, box-shadow .3s ease;
}

.glow-btn:hover{
  transform:translateY(-2px);
  box-shadow:0 0 30px rgba(70,185,255,.42), 0 14px 34px rgba(37,99,235,.36);
}

.glow-btn:active{
  transform:translateY(1px);
  box-shadow:0 3px 12px rgba(70,185,255,.28);
}

.form-status{
  margin-top:18px;
  border-radius:14px;
  padding:18px 18px;
  background:linear-gradient(135deg, rgba(73,230,210,.11), rgba(70,185,255,.06));
  border:1px solid rgba(73,230,210,.3);
  color:#d7fcf5;
  font-size:14px;
  display:flex;
  gap:12px;
  justify-content:center;
  align-items:center;
}

.form-status i{
  color:var(--aqua);
  font-size:25px;
}

/* Footer */
.site-footer{
  background:#03070f;
  border-top:1px solid rgba(255,255,255,.06);
  margin-top:24px;
  padding-top:52px;
}

.footer-top{
  display:grid;
  grid-template-columns:1.3fr 0.8fr 0.9fr;
  gap:46px;
  padding:16px 0 44px;
}

.footer-brand{
  display:flex;
  flex-direction:column;
  gap:14px;
}

.footer-brand .brand{
  font-size:21px;
}

.footer-desc{
  color:var(--weak);
  font-size:14px;
  max-width:380px;
}

.footer-socials{
  display:flex;
  gap:10px;
  margin-top:10px;
}

.footer-socials a{
  width:36px;
  height:36px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:9px;
  border:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.035);
  color:var(--muted);
  font-size:15px;
  transition:color .25s, background .25s, border-color .25s;
}

.footer-socials a:hover{
  color:var(--aqua);
  border-color:rgba(73,230,210,.35);
  background:rgba(73,230,210,.08);
}

.footer-group h4{
  color:#dce3f0;
  font-size:14px;
  letter-spacing:.07em;
  margin-bottom:17px;
}

.footer-links{
  display:grid;
  gap:11px;
}

.footer-links a{
  color:var(--weak);
  font-size:14px;
}

.footer-links a:hover{
  color:var(--aqua);
}

.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:24px 0 28px;
  font-size:13px;
  color:var(--weak);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
30??
}

.footer-bottom .copyright{
  display:inline-flex;
  align-items:center;
  gap:8px;
}

.footer-bottom a{
  color:var(--weak);
}

/* Responsive */
@media(max-width:1024px){
  .site-container{padding-inline:26px;}
  .hero-grid{
    grid-template-columns:1fr;
    gap:38px;
  }
  .hero-panel{
    max-width:620px;
  }
  .news-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .channel-grid{
    grid-template-columns:1fr;
  }
  .service-row{
    grid-template-columns:1fr;
    gap:30px;
  }
  .service-row:nth-child(even) .service-media{
    order:0;
  }
  .compare-grid{
    grid-template-columns:1fr;
  }
  .footer-top{
    grid-template-columns:1fr 1fr;
  }
}

@media(max-width:900px){
  .site-header{
    background:rgba(3,8,17,.96);
  }
  .header-inner{
    min-height:64px;
    flex-wrap:nowrap;
  }
  .site-nav{
    display:none;
    position:absolute;
    left:16px;
    right:16px;
    top:64px;
    background:#071024;
    border:1px solid rgba(255,255,255,.1);
    box-shadow:0 20px 44px rgba(0,0,0,.42);
    border-radius:0 0 20px 20px;
    padding:16px 12px;
    flex-direction:column;
    align-items:stretch;
    margin-left:0;
    z-index:60;
  }
  .site-nav a{
    justify-content:flex-start;
    padding:12px 16px;
    border-radius:10px;
    height:auto;
  }
  .site-nav a::after{
    left:15px;
    bottom:11px;
    transform:none;
  }
  .site-nav a:hover::after,
  .site-nav a.is-active::after{
    width:24px;
  }
  .nav-cta{
    margin-left:0;
    margin-top:5px;
    justify-content:center;
  }
  .nav-burger{
    display:inline-flex;
  }
  .nav-toggle:checked ~ .site-nav{
    display:flex;
  }
  .section{
    padding:82px 0;
  }
  .section-head{
    align-items:flex-start;
    flex-direction:column;
    gap:14px;
  }
  .section-link{
    margin-left:0;
  }
  .footer-top{
    gap:32px;
  }
}

@media(max-width:640px){
  body{font-size:15px;}
  .site-container{padding-inline:20px;}
  .hero{
    min-height:auto;
    padding-top:52px;
    padding-bottom:64px;
  }
  .hero-btns{
    flex-direction:column;
    align-items:stretch;
  }
  .btn-primary,.btn-secondary{
    width:100%;
  }
  .hero-panel{
    padding:18px;
  }
  .metric-grid.two{
    grid-template-columns:1fr;
  }
  .news-grid{
    grid-template-columns:1fr;
  }
  .news-body{
    padding:17px 17px 17px;
  }
  .channel-content{
    padding:20px 17px 18px;
  }
  .form-grid{
    grid-template-columns:1fr;
  }
  .form-item.full{
    grid-column:auto;
  }
  .form-card{
    padding:20px 16px;
  }
  .faq-answer{
    padding:0 20px 20px 21px;
    font-size:14px;
  }
  .compare-box{
    padding:19px 17px 14px;
  }
  .compare-row{
    grid-template-columns:1fr;
    gap:2px;
  }
  .footer-top{
    grid-template-columns:1fr;
    gap:25px;
    padding-top:8px;
  }
  .footer-bottom{
    flex-direction:column;
  }
  .cta-shell{
    padding:76px 0;
    overflow:hidden;
  }
}

@media(prefers-reduced-motion:no-preference){
  .reveal{
    opacity:0;
    transform:translateY(22px);
    transition:opacity .55s ease, transform .55s ease;
  }
  .reveal.visible{
    opacity:1;
    transform:none;
  }
}

/* roulang page: category1 */
:root {
    --bg-0: #070d1a;
    --bg-1: #0b1226;
    --bg-2: #101a33;
    --bg-3: #081124;
    --glass-1: rgba(255, 255, 255, 0.07);
    --glass-2: rgba(255, 255, 255, 0.03);
    --stroke: rgba(255, 255, 255, 0.11);
    --stroke-faint: rgba(255, 255, 255, 0.08);
    --text-main: #edf2ff;
    --text-mid: #a4b1cd;
    --text-weak: #72809c;
    --primary: #3ee6d0;
    --primary-2: #4aa8ff;
    --gold: #e9c46a;
    --green: #45e6a0;
    --amber: #f0bd6d;
    --danger: #ff7a85;
    --r-sm: 8px;
    --r-md: 16px;
    --r-lg: 24px;
    --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.45);
    --shadow-md: 0 12px 34px rgba(0, 0, 0, 0.3);
    --ease: cubic-bezier(.25, .8, .25, 1);
    --font-main: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  }

  *, *::before, *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background:
      radial-gradient(circle at 12% -10%, rgba(62, 230, 208, 0.07), transparent 38%),
      radial-gradient(circle at 88% 10%, rgba(74, 168, 255, 0.06), transparent 30%),
      linear-gradient(180deg, var(--bg-0), var(--bg-1) 40%, var(--bg-3) 100%);
    color: var(--text-main);
    font-family: var(--font-main);
    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 var(--ease), border-color .2s var(--ease), background .2s var(--ease); }
  a:focus-visible, button:focus-visible, summary:focus-visible {
    outline: 2px solid rgba(62, 230, 208, .8);
    outline-offset: 3px;
    border-radius: 4px;
  }
  h1, h2, h3, h4, p, ul { margin: 0; }
  ul { padding: 0; list-style: none; }

  .site-container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: rgba(7, 13, 26, .78);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--stroke-faint);
  }
  .header-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    min-height: 72px;
    position: relative;
  }
  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 19px;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: .02em;
    white-space: nowrap;
  }
  .brand b { color: var(--primary); font-weight: 700; }
  .brand-mark {
    position: relative;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1.5px solid var(--primary);
    background: radial-gradient(circle at center, rgba(62, 230, 208, .18), transparent 68%);
    box-shadow: 0 0 0 4px rgba(62, 230, 208, .06);
    flex: 0 0 auto;
  }
  .brand-mark::before {
    content: "";
    position: absolute;
    inset: 3px;
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 50%;
    border-right-color: rgba(62, 230, 208, .5);
    transform: rotate(23deg);
  }
  .brand-mark::after {
    content: "";
    position: absolute;
    width: 5px;
    height: 5px;
    left: 7px;
    top: 7px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 10px rgba(233, 196, 106, .8);
  }
  .nav-toggle { position: absolute; opacity: 0; pointer-events: none; }

  .site-nav {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-left: auto;
  }
  .site-nav > a:not(.nav-cta) {
    position: relative;
    font-size: 14.5px;
    color: var(--text-mid);
    line-height: 1.2;
    padding: 6px 2px;
  }
  .site-nav > a:not(.nav-cta):hover { color: var(--primary); }
  .site-nav > a.is-active { color: var(--text-main); }
  .site-nav > a:not(.nav-cta).is-active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -5px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--primary);
    transform: translateX(-50%);
    box-shadow: 0 0 0 3px rgba(62, 230, 208, .1);
  }
  .nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 38px;
    padding: 0 18px;
    border-radius: var(--r-sm);
    background: linear-gradient(135deg, #22d3c5, #3b82f6);
    color: #06121c;
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 8px 24px -12px rgba(34, 211, 197, .7);
    transition: transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .nav-cta:hover {
    color: #06121c;
    transform: translateY(-1px);
    box-shadow: 0 0 22px rgba(62, 230, 208, .34), 0 10px 28px -12px rgba(59, 130, 246, .6);
  }
  .nav-cta:active { transform: translateY(1px); }

  .nav-burger {
    display: none;
    font-size: 22px;
    color: var(--text-main);
    cursor: pointer;
    padding: 6px;
    margin-left: auto;
  }

  .page-hero {
    position: relative;
    min-height: 640px;
    display: flex;
    align-items: center;
    background:
      linear-gradient(180deg, rgba(5, 10, 20, .52), rgba(7, 13, 26, .96)),
      url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    border-bottom: 1px solid var(--stroke-faint);
    overflow: hidden;
    padding: 126px 0 100px;
  }
  .page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      radial-gradient(1px 1px at 22% 32%, rgba(255,255,255,.6), transparent 100%),
      radial-gradient(1px 1px at 61% 20%, rgba(255,255,255,.5), transparent 100%),
      radial-gradient(1.5px 1.5px at 78% 56%, rgba(62,230,208,.8), transparent 100%),
      radial-gradient(1px 1px at 36% 70%, rgba(74,168,255,.8), transparent 100%);
    opacity: .55;
    pointer-events: none;
  }
  .hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    font-size: 13px;
    letter-spacing: .1em;
    background: rgba(62, 230, 208, .08);
    border: 1px solid rgba(62, 230, 208, .22);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 28px;
  }
  .hero-kicker i { font-size: 12px; }
  .page-hero h1 {
    font-size: clamp(38px, 5.2vw, 56px);
    font-weight: 700;
    letter-spacing: -.02em;
    line-height: 1.15;
    color: #f4f9ff;
    text-shadow: 0 14px 40px rgba(0, 0, 0, .3);
  }
  .page-hero h1 span {
    display: block;
    margin-top: 8px;
    color: var(--primary);
  }
  .hero-lead {
    max-width: 560px;
    margin-top: 22px;
    color: var(--text-mid);
    font-size: 16px;
    line-height: 1.85;
  }
  .hero-actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; }
  .hero-note {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 26px;
    color: var(--text-weak);
    font-size: 13px;
  }
  .hero-note i { color: var(--primary); }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    padding: 0 24px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--r-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
  }
  .btn-primary {
    background: linear-gradient(135deg, #22d3c5, #3b82f6);
    color: #06121c;
    box-shadow: 0 10px 30px -14px rgba(34, 211, 197, .8);
  }
  .btn-primary:hover {
    color: #05121e;
    transform: translateY(-2px);
    box-shadow: 0 0 0 1px rgba(62,230,208,.3), 0 18px 40px -14px rgba(34,211,197,.68);
  }
  .btn-primary:active { transform: translateY(1px); }
  .btn-ghost {
    background: rgba(255,255,255,.02);
    border-color: rgba(255,255,255,.22);
    color: var(--text-main);
  }
  .btn-ghost:hover {
    border-color: rgba(62,230,208,.55);
    color: var(--primary);
    background: rgba(62,230,208,.05);
  }
  .btn-ghost:active { transform: translateY(1px); }
  .btn-glow {
    background: linear-gradient(135deg, #27e5c9, #4aa8ff);
    color: #05121c;
    box-shadow: 0 0 0 rgba(62, 230, 208, 0), 0 14px 38px -14px rgba(62, 230, 208, .8);
  }
  .btn-glow:hover {
    transform: translateY(-2px);
    color: #05121c;
    box-shadow: 0 0 24px rgba(62, 230, 208, .42), 0 18px 44px -14px rgba(74, 168, 255, .7);
  }
  .btn-glow:active { transform: translateY(1px); }

  .release-glass {
    position: relative;
    background: linear-gradient(135deg, rgba(255,255,255,.1), rgba(255,255,255,.035));
    border: 1px solid var(--stroke);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-lg);
    padding: 26px;
  }
  .release-glass::before {
    content: "";
    position: absolute;
    left: 24px; right: 24px; top: -1px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.5), transparent);
  }
  .glass-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding-bottom: 17px;
    border-bottom: 1px solid var(--stroke-faint);
    margin-bottom: 8px;
  }
  .glass-top h2 {
    font-size: 17px;
    font-weight: 600;
  }
  .mini-status {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #cfd9ee;
    font-size: 12px;
  }
  .mini-status i { color: var(--green); font-size: 7px; text-shadow: 0 0 8px rgba(69,230,160,.8); }
  .glass-list li {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: flex-start;
    padding: 15px 2px;
    border-bottom: 1px solid var(--stroke-faint);
    font-size: 14.5px;
  }
  .glass-list li:last-child { border-bottom: 0; }
  .glass-list li span { color: var(--text-mid); }
  .glass-list li strong {
    color: var(--text-main);
    font-weight: 500;
    text-align: right;
  }
  .glass-list li strong em { font-style: normal; color: var(--gold); }
  .glass-tip {
    margin-top: 12px;
    padding: 12px 14px;
    background: rgba(255,255,255,.04);
    border-left: 3px solid var(--primary);
    border-radius: 4px;
    color: var(--text-mid);
    font-size: 13px;
  }

  .section {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
  }
  .section-alt {
    background:
      radial-gradient(circle at 78% 30%, rgba(74,168,255,.08), transparent 28%),
      linear-gradient(180deg, rgba(8,15,30,.5), rgba(8,15,30,.1) 60%, rgba(7,13,26,.4));
    border-top: 1px solid var(--stroke-faint);
    border-bottom: 1px solid var(--stroke-faint);
  }
  .section-dark { background: rgba(5, 11, 22, .46); }
  .section-head { display: flex; flex-direction: column; align-items: center; text-align: center; margin-bottom: 56px; }
  .section-head.left { align-items: flex-start; text-align: left; }
  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    margin-bottom: 14px;
  }
  .eyebrow i { opacity: .88; }
  .section-head h2 {
    font-size: clamp(27px, 3.6vw, 38px);
    font-weight: 700;
    line-height: 1.26;
    letter-spacing: -.015em;
    color: #f1f6ff;
  }
  .lead {
    margin-top: 19px;
    max-width: 760px;
    color: var(--text-mid);
    font-size: 15.5px;
    line-height: 1.85;
  }

  .prose-visual {
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) minmax(280px, .82fr);
    gap: 44px;
    align-items: center;
  }
  .long-copy p {
    color: #c3cde5;
    font-size: 15.5px;
    line-height: 2.0;
    margin-bottom: 22px;
    text-align: justify;
  }
  .long-copy p:last-child { margin-bottom: 0; }
  .visual-figure {
    position: relative;
    border-radius: var(--r-lg);
    overflow: hidden;
    border: 1px solid var(--stroke);
    box-shadow: var(--shadow-md);
  }
  .visual-figure img { width: 100%; height: 100%; min-height: 220px; object-fit: cover; }
  .figure-caption {
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 14px;
    background: rgba(5, 12, 24, .7);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 13px;
    color: #e4eaf7;
    border: 1px solid rgba(255,255,255,.1);
  }

  .service-panel {
    display: grid;
    grid-template-columns: minmax(250px, .9fr) minmax(0, 1.25fr);
    gap: 20px;
  }
  .panel-intro {
    background:
      linear-gradient(160deg, rgba(34,211,197,.1), rgba(59,130,246,.07)),
      rgba(13,22,42,.66);
    border: 1px solid var(--stroke);
    border-radius: var(--r-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 24px;
  }
  .panel-intro h3 { font-size: 22px; line-height: 1.5; }
  .panel-intro p { color: var(--text-mid); font-size: 14.5px; margin-top: 14px; }
  .panel-intro .panel-mark { color: var(--primary); font-size: 14px; display: inline-flex; align-items: center; gap: 8px; }
  .panel-mark i { color: var(--gold); }
  .feature-list {
    display: grid;
    gap: 12px;
  }
  .feature-row {
    background: linear-gradient(135deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
    border: 1px solid var(--stroke);
    border-radius: var(--r-md);
    padding: 20px 22px;
    display: grid;
    grid-template-columns: 48px 1fr auto;
    align-items: center;
    gap: 14px;
    transition: transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
  }
  .feature-row:hover { transform: translateY(-3px); border-color: rgba(62,230,208,.5); background: rgba(62,230,208,.05); }
  .feature-row i.fa-solid {
    width: 44px; height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid rgba(62,230,208,.2);
    background: rgba(62,230,208,.07);
    color: var(--primary);
    font-size: 17px;
  }
  .feature-row strong { font-size: 16px; }
  .feature-row small { display: block; color: var(--text-mid); font-size: 13.5px; margin-top: 4px; }
  .feature-row .arrow { color: var(--text-weak); font-size: 16px; transition: transform .2s var(--ease), color .2s var(--ease); }
  .feature-row:hover .arrow { color: var(--primary); transform: translateX(4px); }

  .timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    counter-reset: step;
  }
  .timeline-step {
    position: relative;
    background: linear-gradient(135deg, rgba(255,255,255,.065), rgba(255,255,255,.02));
    border: 1px solid var(--stroke);
    border-radius: var(--r-md);
    padding: 26px 22px;
    transition: border-color .2s var(--ease), transform .2s var(--ease);
  }
  .timeline-step:hover { border-color: rgba(62,230,208,.45); transform: translateY(-3px); }
  .timeline-step::before {
    counter-increment: step;
    content: "0" counter(step);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .1em;
    display: block;
    margin-bottom: 12px;
  }
  .timeline-step::after {
    content: "";
    position: absolute;
    top: 34px;
    left: -7px;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(62,230,208,.4));
    z-index: -1;
  }
  .timeline-step:first-child::after { opacity: 0; }
  .timeline-step h3 { font-size: 17px; margin-bottom: 12px; }
  .timeline-step p { color: var(--text-mid); font-size: 14px; line-height: 1.8; }
  .timeline-foot {
    margin-top: 30px;
    text-align: center;
    color: var(--text-mid);
    font-size: 14px;
  }
  .timeline-foot i { color: var(--gold); margin-right: 6px; }

  .compare-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 24px;
    align-items: stretch;
  }
  .compare-col {
    background: linear-gradient(135deg, rgba(255,255,255,.045), rgba(255,255,255,.015));
    border: 1px solid var(--stroke);
    border-radius: var(--r-lg);
    padding: 28px;
  }
  .compare-col.top-col {
    border-color: rgba(233,196,106,.4);
    background:
      radial-gradient(circle at 88% 10%, rgba(233,196,106,.09), transparent 34%),
      linear-gradient(135deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
    box-shadow: var(--shadow-lg);
  }
  .compare-label { color: var(--text-weak); font-size: 13px; letter-spacing: .08em; margin-bottom: 18px; display: flex; align-items: center; gap: 8px; }
  .compare-col.top-col .compare-label { color: var(--gold); }
  .compare-col h3 { font-size: 20px; margin-bottom: 6px; }
  .compare-col > p { color: var(--text-mid); font-size: 14px; margin-bottom: 22px; }
  .compare-col ul { display: grid; gap: 0; margin: 0; }
  .compare-col ul li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    font-size: 14.5px;
    color: var(--text-mid);
    padding: 10px 0;
    border-top: 1px solid var(--stroke-faint);
  }
  .compare-col ul li i { position: relative; top: 5px; font-size: 11px; color: var(--amber); }
  .compare-col.top-col ul li { color: #e8eefc; }
  .compare-col.top-col ul li i { color: var(--primary); }

  .faq-section { background: linear-gradient(180deg, transparent, rgba(8,15,30,.5), transparent); }
  .faq-list {
    max-width: 880px;
    margin: 0 auto;
    display: grid;
    gap: 12px;
  }
  .faq-item {
    background: linear-gradient(135deg, rgba(255,255,255,.055), rgba(255,255,255,.015));
    border: 1px solid var(--stroke);
    border-radius: var(--r-md);
    overflow: hidden;
    transition: border-color .2s var(--ease), background .2s var(--ease);
  }
  .faq-item:hover { border-color: rgba(62,230,208,.35); }
  .faq-item summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    font-size: 15.5px;
    font-weight: 500;
    color: var(--text-main);
    user-select: none;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary .q { color: var(--primary); font-weight: 400; letter-spacing: .05em; }
  .faq-item summary .arrow-mark {
    margin-left: auto;
    color: var(--muted, #a4b1cd);
    transition: transform .2s var(--ease);
  }
  .faq-item[open] summary .arrow-mark { transform: rotate(180deg); color: var(--primary); }
  .faq-answer { padding: 0 24px 22px 58px; color: var(--text-mid); font-size: 14.5px; line-height: 1.85; }
  .faq-answer p { margin: 0; }

  .final-cta {
    position: relative;
    background:
      radial-gradient(circle at 20% 20%, rgba(51, 211, 197, 0.1), transparent 30%),
      radial-gradient(circle at 85% 65%, rgba(233,196,106,.08), transparent 24%),
      linear-gradient(135deg, rgba(10, 19, 38, .7), rgba(6, 14, 30, .9));
    border-top: 1px solid var(--stroke);
    border-bottom: 1px solid var(--stroke);
  }
  .cta-box {
    max-width: 920px;
    margin: 0 auto;
    text-align: center;
    background: linear-gradient(135deg, rgba(255,255,255,.1), rgba(255,255,255,.035));
    border: 1px solid var(--stroke);
    border-radius: var(--r-lg);
    padding: 50px 42px;
  }
  .cta-box h2 { font-size: clamp(25px, 3vw, 34px); line-height: 1.35; }
  .cta-box p { color: var(--text-mid); max-width: 660px; margin: 15px auto 0; }
  .cta-actions { margin-top: 28px; display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
  .text-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    margin-top: 20px;
    font-size: 14px;
    color: var(--primary);
  }
  .text-link:hover { color: var(--gold); }
  .top-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 26px 0 4px;
    color: var(--text-weak);
    font-size: 13px;
  }
  .top-link:hover { color: var(--primary); }

  .site-footer {
    background: #050a14;
    border-top: 1px solid var(--stroke-faint);
    padding-top: 70px;
    padding-bottom: 34px;
  }
  .footer-top {
    display: grid;
    grid-template-columns: 1.5fr .85fr .85fr;
    gap: 46px;
    padding-bottom: 52px;
    border-bottom: 1px solid var(--stroke-faint);
  }
  .footer-brand .brand { font-size: 19px; }
  .footer-desc {
    max-width: 420px;
    color: var(--text-weak);
    font-size: 14px;
    line-height: 1.9;
    margin: 22px 0 0;
  }
  .footer-socials { display: flex; gap: 12px; margin-top: 24px; }
  .footer-socials a {
    width: 38px; height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--stroke);
    border-radius: 10px;
    color: var(--text-mid);
    font-size: 16px;
    transition: all .2s var(--ease);
  }
  .footer-socials a:hover { border-color: rgba(62,230,208,.5); color: var(--primary); transform: translateY(-2px); }
  .footer-group h4 {
    font-size: 15px;
    font-weight: 600;
    color: #dbe4f5;
    margin-bottom: 18px;
    letter-spacing: .03em;
  }
  .footer-links { display: grid; gap: 8px; }
  .footer-links a {
    color: var(--text-weak);
    font-size: 14px;
    width: fit-content;
  }
  .footer-links a:hover { color: var(--primary); }
  .footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    padding-top: 26px;
    color: var(--text-weak);
    font-size: 13px;
  }
  .copyright { color: var(--text-weak); }

  @media (max-width: 1024px) {
    .section { padding: 84px 0; }
    .prose-visual { grid-template-columns: 1fr; gap: 36px; }
    .visual-figure img { min-height: 300px; }
    .timeline { grid-template-columns: repeat(2, 1fr); }
  }

  @media (max-width: 880px) {
    .site-nav {
      display: none;
      flex-direction: column;
      align-items: stretch;
      gap: 4px;
      position: absolute;
      top: calc(100% + 8px);
      left: 24px;
      right: 24px;
      background: rgba(8, 14, 28, .97);
      -webkit-backdrop-filter: blur(14px);
      backdrop-filter: blur(14px);
      border: 1px solid var(--stroke);
      border-radius: var(--r-md);
      padding: 14px;
      box-shadow: var(--shadow-lg);
      z-index: 99;
    }
    .site-nav > a {
      padding: 10px 12px;
      border-radius: 8px;
      border-bottom: 1px solid var(--stroke-faint);
      display: flex;
      align-items: center;
    }
    .site-nav > a.nav-cta {
      background: linear-gradient(135deg, #22d3c5, #3b82f6);
      color: #06121c;
      justify-content: center;
      margin-top: 10px;
      border-bottom: 0;
      border-radius: 8px;
    }
    .site-nav > a:not(.nav-cta).is-active { background: rgba(62,230,208,.06); }
    .site-nav > a:not(.nav-cta).is-active::after { display: none; }
    .nav-burger { display: block; }
    .nav-toggle:checked ~ .site-nav { display: flex; }
    .page-hero { min-height: 560px; padding: 100px 0 84px; }
    .service-panel { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr 1fr; gap: 42px; }
    .footer-brand { grid-column: 1 / -1; }
  }

  @media (max-width: 700px) {
    .section { padding: 64px 0; }
    .lead { font-size: 15px; }
    .page-hero { padding: 90px 0 64px; }
    .compare-grid { grid-template-columns: 1fr; }
    .timeline { grid-template-columns: 1fr; }
    .feature-row { grid-template-columns: 46px 1fr auto; padding: 18px; }
    .cta-box { padding: 40px 24px; }
    .faq-answer { padding: 0 20px 20px 52px; }
  }

  @media (max-width: 520px) {
    .site-container { padding-left: 18px; padding-right: 18px; }
    .header-inner { gap: 16px; }
    .brand { font-size: 17px; }
    .page-hero h1 { font-size: 34px; }
    .hero-actions .btn { width: 100%; }
    .section-head h2 { font-size: 25px; }
    .glass-list li { flex-direction: column; gap: 4px; }
    .glass-list li strong { text-align: left; }
    .feature-row { grid-template-columns: 42px 1fr; }
    .feature-row .arrow { display: none; }
    .timeline-step { padding: 22px 18px; }
    .cta-box { padding: 34px 18px; }
    .footer-top { grid-template-columns: 1fr; gap: 38px; }
    .footer-bottom { flex-direction: column; }
  }

  @media (min-width: 881px) {
    .nav-toggle { display: none; }
  }

/* roulang page: article */
:root{
  --bg:#070d1a;
  --bg-2:#0b1226;
  --bg-deep:#050a14;
  --surface:rgba(255,255,255,0.075);
  --surface-deep:rgba(13,23,48,0.72);
  --stroke:rgba(255,255,255,0.12);
  --line:rgba(255,255,255,0.08);
  --text:#edf2ff;
  --muted:#a4b1cd;
  --weak:#64748b;
  --brand:#3ee6d0;
  --brand-2:#4aa8ff;
  --gold:#e9c46a;
  --radius-xl:24px;
  --radius-lg:16px;
  --radius-md:10px;
  --radius-sm:8px;
  --shadow-lg:0 18px 50px rgba(0,0,0,0.45);
  --font-main:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-main);
  background:
    radial-gradient(1200px 600px at 88% -8%, rgba(62,230,208,0.07), transparent 42%),
    radial-gradient(900px 500px at 8% 8%, rgba(59,130,246,0.09), transparent 46%),
    linear-gradient(165deg, #070d1a 0%, #0a1122 46%, #060b16 100%);
  background-attachment:fixed;
  color:var(--text);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .3s ease,box-shadow .2s ease,transform .25s ease}
a:hover{color:#ffffff}
a:focus-visible,:focus-visible{
  outline:2px solid rgba(62,230,208,0.85);
  outline-offset:3px;
  border-radius:6px;
}
.site-container{
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,13,26,0.82);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:18px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:700;
  letter-spacing:-0.01em;
  color:var(--text);
  white-space:nowrap;
}
.brand b{
  color:var(--brand);
  font-weight:700;
}
.brand-mark{
  position:relative;
  width:22px;
  height:22px;
  border:1.5px solid var(--brand);
  border-radius:50%;
  flex:0 0 auto;
}
.brand-mark::before{
  content:"";
  position:absolute;
  width:5px;
  height:5px;
  background:#fff;
  border-radius:50%;
  top:3px;
  left:3px;
  box-shadow:0 0 10px rgba(62,230,208,0.9);
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:5px auto auto 12px;
  width:14px;
  height:1px;
  background:linear-gradient(90deg,var(--brand),transparent);
  transform:rotate(28deg);
  transform-origin:left center;
}
.nav-toggle{
  position:absolute;
  left:-9999px;
  opacity:0;
  pointer-events:none;
  height:0;
  width:0;
}
.site-nav{
  display:flex;
  align-items:center;
  gap:30px;
  margin-left:auto;
}
.site-nav > a{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 0;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  transition:color .2s ease;
}
.site-nav > a::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transition:left .25s ease,right .25s ease;
}
.site-nav > a:hover,.site-nav > a.is-active{
  color:#fff;
}
.site-nav > a:hover::after,.site-nav > a.is-active::after{
  left:0;
  right:0;
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:36px;
  padding:0 16px;
  margin-left:6px;
  gap:8px;
  border-radius:var(--radius-sm);
  color:#fff !important;
  font-weight:600;
  background:linear-gradient(135deg,#22d3c5,#3b82f6);
  box-shadow:0 0 18px rgba(62,230,208,0.22);
  letter-spacing:0.02em;
}
.nav-cta:hover{
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 0 28px rgba(62,230,208,0.42);
}
.nav-cta:active{
  transform:translateY(0);
}
.nav-cta::after{
  display:none;
}
.nav-burger{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:10px;
  color:var(--muted);
  font-size:20px;
  cursor:pointer;
  border:1px solid transparent;
  transition:all .2s ease;
}
.nav-burger:hover{
  color:var(--brand);
  border-color:var(--line);
}
.nav-toggle:checked ~ .nav-burger{
  color:var(--brand);
  border-color:rgba(62,230,208,0.4);
}
.site-main{
  padding:0 0 56px;
  min-height:60vh;
}
.article-layout{
  max-width:1000px;
  padding-right:24px;
  padding-left:24px;
  width:100%;
}
.breadcrumbs-trail{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  padding:30px 0 16px;
  font-size:13px;
  color:var(--weak);
}
.breadcrumbs-trail a{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--muted);
}
.breadcrumbs-trail a:hover{
  color:var(--brand);
}
.crumb-sep{
  color:rgba(255,255,255,0.28);
}
.crumb-current{
  display:inline-block;
  max-width:480px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--text);
  vertical-align:bottom;
}
.article-card{
  position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,0.085),rgba(255,255,255,0.025));
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--radius-xl);
  padding:clamp(20px,4vw,52px);
  padding-top:42px;
  box-shadow:0 1px 0 rgba(255,255,255,0.06) inset,0 20px 60px rgba(0,0,0,0.18);
}
.article-card::before{
  content:"";
  display:block;
  width:76px;
  height:4px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  margin-bottom:34px;
}
.article-head .article-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:500;
  letter-spacing:0.04em;
  color:#b9ddff;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(74,168,255,0.12);
  border:1px solid rgba(74,168,255,0.24);
  margin-bottom:20px;
}
.article-title{
  font-size:clamp(31px,4.7vw,48px);
  font-weight:800;
  line-height:1.28;
  letter-spacing:-0.02em;
  color:var(--text);
  margin:0 0 22px;
  word-break:break-word;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 6px;
  padding:14px 0;
  border-top:1px solid rgba(255,255,255,0.08);
  border-bottom:1px solid rgba(255,255,255,0.08);
  font-size:14px;
  color:var(--muted);
  margin-bottom:26px;
}
.article-meta span{
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.article-meta i{
  color:var(--brand);
  width:16px;
  text-align:center;
  font-size:13px;
}
.meta-dot{
  width:3px;
  height:3px;
  border-radius:50%;
  background:rgba(255,255,255,0.32);
  margin:0 6px;
}
.article-cover{
  position:relative;
  width:100%;
  aspect-ratio:16/8;
  border-radius:20px;
  overflow:hidden;
  margin:0 0 32px;
  border:1px solid rgba(255,255,255,0.06);
}
.article-cover img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}
.article-cover::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,13,26,0) 36%,rgba(7,13,26,0.52) 100%);
}
.article-cover figcaption{
  position:absolute;
  left:18px;
  bottom:14px;
  z-index:2;
  font-size:13px;
  color:rgba(237,242,255,0.92);
  background:rgba(7,13,26,0.42);
  border:1px solid rgba(255,255,255,0.1);
  backdrop-filter:blur(8px);
  padding:4px 12px;
  border-radius:999px;
}
.article-body{
  max-width:760px;
  font-size:16px;
  line-height:1.95;
  color:rgba(237,242,255,0.95);
}
.article-body p{
  margin:0 0 1.5em;
}
.article-body h2,.article-body h3,.article-body h4{
  color:#fff;
  line-height:1.4;
  margin:1.7em 0 .8em;
  font-weight:700;
}
.article-body h2{
  font-size:1.65rem;
  letter-spacing:-0.01em;
}
.article-body h3{
  font-size:1.3rem;
}
.article-body h4{
  font-size:1.1rem;
}
.article-body ul,.article-body ol{
  margin:0 0 1.5em;
  padding-left:1.6em;
}
.article-body ul li,.article-body ol li{
  margin-bottom:.55em;
}
.article-body blockquote{
  margin:1.8em 0;
  padding:18px 22px;
  border-left:3px solid var(--gold);
  border-radius:0 12px 12px 0;
  background:rgba(233,196,106,0.08);
  color:#dce4f7;
}
.article-body blockquote p{
  margin:0;
}
.article-body a{
  color:var(--brand);
  border-bottom:1px solid rgba(62,230,208,0.3);
}
.article-body a:hover{
  color:#fff;
  border-bottom-color:var(--brand);
}
.article-body pre{
  background:#0b101f;
  padding:20px;
  border-radius:14px;
  overflow-x:auto;
  border:1px solid rgba(255,255,255,0.09);
  margin:1.6em 0;
}
.article-body code{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  color:var(--brand);
  font-size:.9em;
}
.article-body pre code{
  color:#dbe7ff;
  background:none;
  padding:0;
  font-size:.9em;
  line-height:1.7;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.8em 0;
  font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid rgba(255,255,255,0.12);
  padding:10px 14px;
  text-align:left;
}
.article-body th{
  background:rgba(74,168,255,0.1);
  color:#fff;
}
.article-tags{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:32px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,0.08);
}
.tag-caption{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-right:6px;
  font-size:13px;
  color:var(--weak);
}
.tag-caption i{
  color:var(--brand);
}
.tag-pill{
  display:inline-flex;
  align-items:center;
  min-height:28px;
  padding:2px 12px;
  border-radius:999px;
  font-size:13px;
  color:var(--muted);
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.09);
  transition:all .2s ease;
}
.tag-pill:hover{
  color:var(--brand);
  border-color:rgba(62,230,208,0.32);
  background:rgba(62,230,208,0.08);
}
.article-footer-bar{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:space-between;
  align-items:center;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,0.08);
}
.article-footer-links{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-md);
  font-size:15px;
  font-weight:600;
  border:1px solid rgba(255,255,255,0.18);
  color:var(--text);
  transition:all .2s ease;
  white-space:nowrap;
  cursor:pointer;
}
.btn:hover{
  color:var(--text);
  border-color:rgba(62,230,208,0.6);
  transform:translateY(-1px);
}
.btn:active{
  transform:translateY(0);
}
.btn-primary{
  border-color:transparent;
  color:#fff;
  background:linear-gradient(135deg,#22d3c5,#3b82f6);
  box-shadow:0 0 20px rgba(59,130,246,0.24);
}
.btn-primary:hover{
  border-color:transparent;
  color:#fff;
  box-shadow:0 0 30px rgba(62,230,208,0.38);
  transform:translateY(-2px);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 15px rgba(62,230,208,0.3);
}
.btn-ghost{
  color:var(--muted);
  background:rgba(255,255,255,0.05);
}
.btn-ghost:hover{
  color:#fff;
  background:rgba(62,230,208,0.08);
}
.article-end-card{
  position:relative;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  margin-top:22px;
  padding:26px 28px;
  border-radius:18px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.11);
  background:
    linear-gradient(100deg,rgba(7,13,26,0.97) 30%,rgba(7,13,26,0.88) 72%,rgba(7,13,26,0.75) 100%),
    url('/assets/images/coverpic/cover-8.png') right center/cover no-repeat;
}
.article-end-card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:56px;
  height:3px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.article-end-copy span{
  display:block;
  font-size:12.5px;
  letter-spacing:0.08em;
  color:var(--weak);
  text-transform:uppercase;
  margin-bottom:5px;
}
.article-end-copy strong{
  font-size:17px;
  color:var(--text);
  line-height:1.6;
  display:block;
  max-width:560px;
}
.article-end-card .btn{
  flex:0 0 auto;
}
.empty-state{
  min-height:44vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:18px;
  text-align:center;
  padding:70px 20px;
}
.empty-state-mark{
  display:flex;
  align-items:center;
  justify-content:center;
  width:64px;
  height:64px;
  border-radius:20px;
  border:1px solid rgba(62,230,208,0.25);
  background:rgba(62,230,208,0.08);
  color:var(--brand);
  font-size:24px;
}
.empty-state h1{
  font-size:26px;
  color:#fff;
}
.empty-state p{
  max-width:420px;
  font-size:15px;
  color:var(--muted);
}
.site-footer{
  background:#050a14;
  border-top:1px solid rgba(255,255,255,0.08);
  margin-top:72px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr .7fr .8fr;
  gap:48px;
  padding:58px 0 40px;
  border-bottom:1px solid rgba(255,255,255,0.07);
}
.footer-top .brand{
  color:var(--text);
}
.footer-desc{
  max-width:400px;
  margin-top:18px;
  font-size:14px;
  color:#7a89a8;
  line-height:1.85;
}
.footer-socials{
  display:flex;
  gap:10px;
  margin-top:22px;
}
.footer-socials a{
  display:flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:12px;
  color:var(--muted);
  font-size:16px;
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.08);
  transition:all .2s ease;
}
.footer-socials a:hover{
  color:#fff;
  background:rgba(62,230,208,0.12);
  border-color:rgba(62,230,208,0.35);
}
.footer-group h4{
  color:#dbe4f7;
  font-size:16px;
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:11px;
}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:#8494b5;
  font-size:14px;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a::before{
  content:"";
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--brand);
  opacity:.7;
}
.footer-links a:hover{
  color:#fff;
  transform:translateX(3px);
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:8px 20px;
  padding:24px 0 42px;
  font-size:13px;
  color:rgba(255,255,255,0.3);
}
.footer-bottom .copyright{
  color:#64748b;
}
@media screen and (max-width:1024px){
  .footer-top{
    grid-template-columns:1fr .8fr;
  }
  .footer-brand{
    grid-column:1/-1;
  }
}
@media screen and (max-width:860px){
  .site-header{
    height:auto;
  }
  .header-inner{
    height:64px;
  }
  .brand{
    font-size:18px;
  }
  .nav-burger{
    display:flex;
    margin-left:auto;
  }
  .site-nav{
    position:fixed;
    top:65px;
    right:16px;
    max-width:calc(100vw - 32px);
    width:260px;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    margin:0;
    padding:16px;
    background:rgba(8,14,28,0.98);
    border:1px solid rgba(255,255,255,0.11);
    border-radius:18px;
    box-shadow:0 24px 60px rgba(0,0,0,0.5);
    transform:translateY(-10px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  }
  .nav-toggle:checked ~ .site-nav{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:translateY(0);
  }
  .site-nav > a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:10px 14px;
    border-radius:10px;
    font-size:15px;
  }
  .site-nav > a::after{
    display:none;
  }
  .site-nav > a.is-active,
  .site-nav > a:hover{
    background:rgba(62,230,208,0.1);
    color:#fff;
  }
  .nav-cta{
    margin:8px 0 0;
    justify-content:center;
    height:40px;
  }
  .article-title{
    font-size:34px;
  }
  .article-card{
    padding:28px 24px;
  }
}
@media screen and (max-width:720px){
  .site-main{
    padding-bottom:28px;
  }
  .breadcrumbs-trail{
    padding-top:20px;
  }
  .article-layout{
    padding-right:16px;
    padding-left:16px;
  }
  .article-card{
    border-radius:20px;
    padding:24px 18px;
  }
  .article-card::before{
    width:50px;
    margin-bottom:24px;
  }
  .article-title{
    font-size:28px;
  }
  .article-meta{
    gap:6px;
    font-size:13px;
    padding:12px 0;
  }
  .article-visible-full{
    display:none;
  }
  .article-cover{
    border-radius:14px;
  }
  .article-body{
    font-size:15.5px;
    line-height:1.9;
  }
  .article-end-card{
    flex-direction:column;
    align-items:flex-start;
    padding:24px;
  }
  .article-end-card .btn{
    width:100%;
  }
  .article-footer-bar{
    flex-direction:column;
    align-items:flex-start;
  }
  .article-footer-links,.article-footer-links .btn{
    width:100%;
  }
  .footer-top{
    grid-template-columns:1fr;
    gap:32px;
    padding:44px 0 30px;
  }
  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
    padding:20px 0 34px;
  }
}
@media screen and (max-width:520px){
  .brand{
    font-size:16.5px;
  }
  .nav-burger{
    width:36px;
    height:36px;
  }
  .article-title{
    font-size:25px;
    line-height:1.35;
  }
  .article-card{
    border-radius:16px;
    padding:20px 16px;
  }
  .breadcrumbs-trail{
    font-size:12px;
  }
  .crumb-current{
    max-width:180px;
  }
  .article-meta .meta-hide-mobile{
    display:none;
  }
  .article-body h2{
    font-size:1.35rem;
  }
}

/* roulang page: category2 */
:root {
            --bg0: #050a14;
            --bg1: #070d1a;
            --bg2: #0b1226;
            --card: rgba(13, 23, 48, 0.72);
            --glass: rgba(22, 32, 62, 0.58);
            --line: rgba(255, 255, 255, 0.08);
            --line2: rgba(255, 255, 255, 0.16);
            --primary: #3ee6d0;
            --primary2: #4aa8ff;
            --gold: #e9c46a;
            --text: #edf2ff;
            --muted: #a4b1cd;
            --weak: #64748b;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 26px;
            --shadow-float: 0 20px 60px rgba(0, 0, 0, 0.45);
            --transition: all 0.22s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg1);
            color: var(--text);
            font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            letter-spacing: 0.01em;
            -webkit-font-smoothing: antialiased;
        }

        body::before {
            position: fixed;
            inset: 0;
            z-index: 0;
            content: "";
            pointer-events: none;
            background:
                radial-gradient(circle at 15% 10%, rgba(62, 230, 208, 0.06), transparent 28%),
                radial-gradient(circle at 90% 18%, rgba(74, 168, 255, 0.05), transparent 30%),
                radial-gradient(circle at 70% 90%, rgba(233, 196, 106, 0.03), transparent 24%),
                radial-gradient(circle, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
            background-size: auto, auto, auto, 36px 36px;
            background-position: 0 0, 0 0, 0 0, 0 0;
            opacity: 0.2;
        }

        body>header,
        body>main,
        body>footer {
            position: relative;
            z-index: 1;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 6px;
        }

        img {
            max-width: 100%;
            display: block;
        }

        p,
        h1,
        h2,
        h3,
        h4,
        ul,
        ol {
            margin-top: 0;
        }

        ul {
            padding: 0;
            list-style: none;
        }

        .site-container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 72px;
            background: rgba(7, 13, 26, 0.78);
            border-bottom: 1px solid var(--line);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .brand b {
            font-weight: 600;
            color: var(--primary);
        }

        .brand-mark {
            position: relative;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.35);
            flex: 0 0 auto;
        }

        .brand-mark::before {
            content: "";
            position: absolute;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            top: 3px;
            left: 3px;
            box-shadow: 0 0 10px rgba(62, 230, 208, 0.8);
        }

        .brand-mark::after {
            content: "";
            position: absolute;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            border: 1px dashed rgba(233, 196, 106, 0.7);
            top: -3px;
            right: -4px;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: clamp(18px, 3vw, 34px);
        }

        .site-nav>a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1;
            position: relative;
            padding: 8px 0;
            transition: var(--transition);
        }

        .site-nav>a:hover {
            color: var(--text);
        }

        .site-nav>a.is-active {
            color: var(--text);
        }

        .site-nav>a.is-active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 8px var(--primary);
        }

        .site-nav .nav-cta {
            background: linear-gradient(135deg, rgba(62, 230, 208, 0.18), rgba(74, 168, 255, 0.18));
            border: 1px solid rgba(62, 230, 208, 0.5);
            color: #fff;
            padding: 8px 16px;
            border-radius: 8px;
        }

        .site-nav .nav-cta:hover {
            border-color: var(--primary);
            box-shadow: 0 0 18px rgba(62, 230, 208, 0.25);
            color: #fff;
            transform: translateY(-1px);
        }

        .site-nav .nav-cta i {
            color: var(--primary);
            font-size: 13px;
        }

        .nav-toggle {
            position: absolute;
            opacity: 0;
            pointer-events: none;
        }

        .nav-burger {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--line);
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
        }

        .nav-burger:hover {
            border-color: rgba(62, 230, 208, 0.5);
            color: var(--primary);
        }

        @media (max-width: 860px) {
            .nav-burger {
                display: inline-flex;
            }

            .site-nav {
                position: absolute;
                left: 0;
                right: 0;
                top: 72px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                background: rgba(5, 10, 22, 0.96);
                backdrop-filter: blur(16px);
                border-bottom: 1px solid var(--line);
                gap: 4px;
                box-shadow: var(--shadow-float);
            }

            .nav-toggle:checked~.site-nav {
                display: flex;
            }

            .site-nav>a {
                padding: 14px 12px;
                border-bottom: 1px solid var(--line);
                border-radius: 0;
            }

            .site-nav>a.is-active::after {
                width: 5px;
                height: 5px;
                left: 14px;
                top: auto;
                bottom: 4px;
                transform: none;
            }

            .site-nav>.nav-cta {
                justify-content: center;
                margin-top: 14px;
                padding: 12px;
                border-radius: 8px;
            }
        }

        .section {
            padding: 96px 0;
            border-bottom: 1px solid var(--line);
        }

        .eyebrow {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            letter-spacing: 0.08em;
            color: var(--weak);
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .eyebrow span {
            color: var(--primary);
            border: 1px solid rgba(62, 230, 208, 0.3);
            background: rgba(62, 230, 208, 0.08);
            border-radius: 999px;
            padding: 2px 12px;
            text-transform: none;
            letter-spacing: 0.02em;
        }

        .section-title {
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .section-lead {
            color: var(--muted);
            font-size: 16px;
            max-width: 760px;
            margin-bottom: 36px;
        }

        .page-banner {
            position: relative;
            padding: 128px 0 88px;
            background:
                linear-gradient(180deg, rgba(7, 13, 26, 0.72), rgba(7, 13, 26, 0.94)),
                url('/assets/images/backpic/back-2.webp') center 30% / cover no-repeat;
            border-bottom: 1px solid var(--line);
        }

        .page-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background: linear-gradient(180deg, transparent 60%, var(--bg1) 100%);
        }

        .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 920px;
        }

        .crumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--weak);
            margin-bottom: 30px;
        }

        .crumb a {
            color: var(--muted);
        }

        .crumb a:hover {
            color: var(--primary);
        }

        .crumb span {
            color: rgba(255, 255, 255, 0.6);
        }

        .crumb .current {
            color: var(--text);
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(62, 230, 208, 0.1);
            border: 1px solid rgba(62, 230, 208, 0.25);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 13px;
            margin-bottom: 20px;
        }

        .banner-tag i {
            font-size: 12px;
        }

        .page-banner h1 {
            font-size: clamp(36px, 5.4vw, 54px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin: 0 0 20px;
        }

        .page-banner h1 span {
            color: var(--primary);
        }

        .banner-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--muted);
            max-width: 780px;
            margin-bottom: 34px;
        }

        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            border-radius: 8px;
            padding: 12px 24px;
            cursor: pointer;
            border: 1px solid transparent;
            transition: var(--transition);
            background: transparent;
        }

        .btn-primary {
            background: linear-gradient(135deg, rgba(62, 230, 208, 0.2), rgba(74, 168, 255, 0.2));
            border-color: rgba(62, 230, 208, 0.65);
            color: #fff;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 22px rgba(62, 230, 208, 0.28);
            border-color: var(--primary);
        }

        .btn-ghost {
            border-color: rgba(255, 255, 255, 0.3);
            color: var(--text);
        }

        .btn-ghost:hover {
            border-color: rgba(62, 230, 208, 0.6);
            color: var(--primary);
        }

        .banner-quickstats {
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 42px;
            padding-top: 24px;
            border-top: 1px solid var(--line);
        }

        .quickstat {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--muted);
            font-size: 14px;
        }

        .quickstat b {
            color: var(--text);
            font-size: 22px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
        }

        .quickstat .status-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 10px var(--primary);
        }

        @media (max-width: 640px) {
            .page-banner {
                padding: 100px 0 60px;
            }
            .banner-quickstats {
                gap: 18px;
            }
            .quickstat {
                font-size: 13px;
            }
        }

        .intro-section {
            background: linear-gradient(180deg, rgba(11, 18, 38, 0.3), rgba(5, 10, 20, 0.2));
        }

        .info-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 64px;
            align-items: center;
        }

        .text-lead {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 24px;
        }

        .text-lead strong {
            color: var(--text);
            font-weight: 600;
        }

        .check-list {
            margin-top: 28px;
            display: grid;
            gap: 12px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--muted);
            font-size: 14px;
            border-left: 2px solid rgba(62, 230, 208, 0.35);
            padding-left: 16px;
        }

        .check-list i {
            color: var(--primary);
            font-size: 14px;
            margin-top: 6px;
        }

        .figure-card {
            position: relative;
            border-radius: 18px;
            padding: 10px;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.13);
            box-shadow: var(--shadow-float);
            overflow: hidden;
        }

        .figure-card::before {
            content: "";
            display: block;
            position: absolute;
            top: 0;
            left: 20px;
            right: 80px;
            height: 1px;
            background: rgba(255, 255, 255, 0.22);
        }

        .figure-card img {
            width: 100%;
            height: auto;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: 14px;
        }

        .figure-caption {
            display: flex;
            justify-content: space-between;
            gap: 12px;
            padding: 12px 8px 4px;
            color: var(--weak);
            font-size: 13px;
        }

        .figure-caption b {
            color: var(--muted);
            font-weight: 500;
        }

        @media (max-width: 960px) {
            .info-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        .platform-section {
            background: rgba(5, 10, 24, 0.35);
        }

        .platform-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 22px;
            margin-top: 32px;
        }

        .platform-card {
            position: relative;
            border-radius: var(--radius);
            background: var(--card);
            border: 1px solid var(--line);
            padding: 30px;
            transition: var(--transition);
        }

        .platform-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 30px;
            right: 60px;
            height: 1px;
            background: rgba(255, 255, 255, 0.14);
        }

        .platform-card:hover {
            transform: translateY(-4px);
            border-color: rgba(62, 230, 208, 0.55);
            background: rgba(20, 32, 62, 0.78);
        }

        .platform-card .icon {
            display: inline-flex;
            width: 46px;
            height: 46px;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            background: rgba(62, 230, 208, 0.1);
            border: 1px solid rgba(62, 230, 208, 0.24);
            border-radius: 12px;
            font-size: 19px;
            margin-bottom: 24px;
        }

        .platform-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .platform-card p {
            color: var(--muted);
            font-size: 15px;
            margin-bottom: 16px;
        }

        .platform-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
        }

        .platform-card .card-link i {
            transition: var(--transition);
        }

        .platform-card .card-link:hover i {
            transform: translateX(3px);
        }

        @media (max-width: 760px) {
            .platform-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .section {
                padding: 68px 0;
            }
        }

        .steps-section {
            background:
                linear-gradient(180deg, rgba(7, 13, 26, 0.9), rgba(11, 18, 38, 0.8)),
                url('/assets/images/backpic/back-1.png') center 20% / cover no-repeat;
        }

        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .step-item {
            position: relative;
            background: rgba(13, 23, 48, 0.72);
            border: 1px solid var(--line);
            padding: 28px 22px;
            border-radius: 16px;
            transition: var(--transition);
        }

        .step-item:hover {
            border-color: rgba(62, 230, 208, 0.5);
            transform: translateY(-5px);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--gold);
            font-size: 14px;
            letter-spacing: 0.04em;
            margin-bottom: 26px;
        }

        .step-num i {
            opacity: 0.7;
            font-size: 12px;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .step-item p {
            color: var(--muted);
            font-size: 14px;
            margin-bottom: 0;
        }

        @media (max-width: 920px) {
            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 600px) {
            .steps-wrap {
                grid-template-columns: 1fr;
            }
        }

        .attention-strip {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
            margin-top: 46px;
        }

        .attention-item {
            display: flex;
            gap: 14px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--line);
            padding: 20px;
            border-radius: 14px;
            font-size: 14px;
            color: var(--muted);
        }

        .attention-item i {
            color: var(--primary);
            font-size: 17px;
            margin-top: 3px;
        }

        .faq-section {
            background: rgba(5, 10, 20, 0.2);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: rgba(13, 23, 48, 0.66);
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 6px 8px;
            margin-bottom: 14px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(62, 230, 208, 0.42);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 16px;
            cursor: pointer;
            list-style: none;
            font-size: 17px;
            color: var(--text);
            font-weight: 500;
            line-height: 1.5;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-q {
            flex: 0 0 auto;
            min-width: 42px;
            color: var(--weak);
            font-size: 13px;
            font-weight: 400;
        }

        .faq-item .faq-a {
            padding: 0 22px 26px 74px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-item .faq-a a {
            color: var(--primary);
        }

        .faq-item .faq-a a:hover {
            border-bottom: 1px solid rgba(62, 230, 208, 0.5);
        }

        @media (max-width: 720px) {
            .faq-item .faq-a {
                padding-left: 20px;
                padding-right: 14px;
            }
        }

        .attn-note {
            text-align: center;
            font-size: 13px;
            color: var(--weak);
            margin-top: 22px;
        }

        .contact-strip {
            background: linear-gradient(180deg, rgba(11, 18, 38, 0.5), rgba(5, 10, 20, 0.4));
        }

        .contact-card {
            max-width: 1020px;
            margin: 0 auto;
            background: linear-gradient(135deg, rgba(62, 230, 208, 0.06), rgba(74, 168, 255, 0.05));
            border: 1px solid rgba(62, 230, 208, 0.2);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            align-items: center;
            gap: 32px;
        }

        .contact-card h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .contact-card p {
            color: var(--muted);
            font-size: 15px;
            margin: 0;
        }

        .mini-form-wrap {
            position: relative;
        }

        .mini-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mini-form .field-row {
            display: flex;
            gap: 10px;
        }

        .mini-form input {
            width: 100%;
            background: rgba(7, 13, 26, 0.86);
            border: 1px solid var(--line2);
            border-radius: 8px;
            color: var(--text);
            font-size: 15px;
            padding: 11px 16px;
            font-family: inherit;
            transition: var(--transition);
        }

        .mini-form input:hover {
            border-color: rgba(255, 255, 255, 0.28);
        }

        .mini-form input:focus {
            border-color: var(--primary);
            background: rgba(7, 13, 26, 0.95);
        }

        .mini-form input::placeholder {
            color: var(--weak);
        }

        .mini-form .btn {
            white-space: nowrap;
        }

        .submit-tip {
            display: none;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            color: var(--primary);
            border: 1px solid rgba(62, 230, 208, 0.4);
            background: rgba(62, 230, 208, 0.1);
            border-radius: 8px;
            font-size: 15px;
            padding: 10px;
            margin-top: 12px;
        }

        @media (max-width: 820px) {
            .contact-card {
                grid-template-columns: 1fr;
                padding: 30px 24px;
            }
            .mini-form .field-row {
                flex-direction: column;
            }
        }

        .site-footer {
            background: #050a14;
            border-top: 1px solid var(--line);
            padding: 72px 0 36px;
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand .brand {
            font-size: 19px;
        }

        .footer-desc {
            color: var(--weak);
            font-size: 14px;
            line-height: 1.85;
            max-width: 360px;
            margin: 20px 0;
        }

        .footer-socials {
            display: flex;
            gap: 10px;
        }

        .footer-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border: 1px solid var(--line);
            border-radius: 10px;
            color: var(--muted);
            background: rgba(255, 255, 255, 0.02);
        }

        .footer-socials a:hover {
            color: var(--primary);
            border-color: rgba(62, 230, 208, 0.5);
            background: rgba(62, 230, 208, 0.06);
            transform: translateY(-3px);
        }

        .footer-group h4 {
            color: var(--text);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: var(--muted);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid var(--line);
            color: var(--weak);
            font-size: 13px;
        }

        .footer-bottom .copyright {
            color: var(--weak);
        }

        @media (max-width: 900px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }