/* roulang page: index */
:root{
  --ink:#0A1428;
  --ink-deep:#08101F;
  --panel:#101D38;
  --panel-soft:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.09);
  --line-deep:rgba(10,20,40,.08);
  --cyan:#35D0FF;
  --cyan-light:#7AE0FF;
  --mist:#E0F2FE;
  --sky:#B6E6FF;
  --light:#F5F8FC;
  --text-deep:#E6EDF7;
  --text-soft:#A6B4C9;
  --text-onlight:#132033;
  --text-muted:#55657B;
  --ok:#3DDB85;
  --warn:#FFC75F;
  --error:#FF6B6B;
  --radius:16px;
  --radius-sm:12px;
  --radius-tag:999px;
  --shadow-soft:0 4px 20px rgba(10,20,40,.04);
  --shadow-card:0 6px 30px rgba(10,20,40,.18);
  --container:1280px;
  --pad:clamp(16px,4vw,48px);
  --space-lg:clamp(76px,10vw,128px);
  --space-sm:clamp(58px,8vw,86px);
}
*{box-sizing:border-box}
html,body{width:100%;overflow-x:hidden}
body{
  margin:0;
  background:var(--ink);
  color:var(--text-deep);
  font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
button{font-family:inherit;background:none;border:0;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
.container{max-width:var(--container);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.section{padding:var(--space-lg) 0;position:relative}
.section-light{background:var(--light);color:var(--text-onlight)}
.section-light .text-muted{color:var(--text-muted)}
.section-dark{background:var(--ink);color:var(--text-deep)}
.section-head{max-width:860px;margin:0 auto clamp(42px,6vw,66px);text-align:center}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin-bottom:12px}
.section-light .eyebrow{color:#0891C6}
.section-title{font-size:clamp(26px,3.6vw,40px);line-height:1.28;font-weight:800;letter-spacing:-.01em}
.section-sub{margin-top:16px;font-size:16px;color:var(--text-soft);line-height:1.8}
.section-light .section-sub{color:var(--text-muted)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-weight:700;
  font-size:15px;
  line-height:1;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  will-change:transform;
}
.btn-primary{
  background:linear-gradient(135deg,#35D0FF,#7AE0FF);
  color:#03121F;
  box-shadow:0 0 24px rgba(53,208,255,.35);
}
.btn-primary:hover{
  box-shadow:0 0 36px rgba(53,208,255,.55);
  filter:brightness(1.06);
  transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px rgba(53,208,255,.3)}
.btn-ghost{
  background:rgba(255,255,255,.08);
  color:#fff;
  border-color:rgba(255,255,255,.22);
  box-shadow:0 0 0 rgba(53,208,255,0);
}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.38);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-group{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.section-light .btn-primary{
  background:linear-gradient(135deg,#0B7FB8,#35D0FF);
  color:#fff;
  box-shadow:0 10px 30px rgba(11,127,184,.26);
}
.section-light .btn-primary:hover{box-shadow:0 14px 38px rgba(11,127,184,.38)}
.section-light .btn-ghost{
  background:#fff;color:var(--text-onlight);border-color:rgba(10,20,40,.14);
}
.section-light .btn-ghost:hover{background:rgba(10,20,40,.05);border-color:rgba(10,20,40,.28)}

/* 头部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(8,16,31,.82);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.06);
  box-shadow:0 8px 30px rgba(2,8,20,.12);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;outline:none}
.brand-mark{
  width:42px;height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:linear-gradient(150deg,#0B4A70,#0E2A4F);
  border:1px solid rgba(53,208,255,.45);
  color:var(--cyan);
  box-shadow:0 0 18px rgba(53,208,255,.18);
  flex-shrink:0;
}
.brand-mark svg{display:block}
.brand-name{font-size:19px;font-weight:800;color:#F3F8FF;letter-spacing:.5px;line-height:1.2;white-space:nowrap}
.brand-site{display:block;font-size:11px;font-weight:500;color:#8DA0B8;letter-spacing:.3px;line-height:1.2}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links .nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:0 15px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  color:#D3DDEC;
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-links .nav-link:hover{color:var(--cyan);background:rgba(255,255,255,.06)}
.nav-links .nav-link.active{color:#fff;font-weight:700}
.nav-links .nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:99px;
  background:linear-gradient(90deg,var(--cyan),#fff);
}
.header-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  flex-shrink:0;
  background:linear-gradient(135deg,#35D0FF,#7AE0FF);
  color:#03121F;
  font-weight:800;
  font-size:15px;
  min-height:46px;
  padding:0 20px;
  border-radius:var(--radius-sm);
  box-shadow:0 0 22px rgba(53,208,255,.36);
  border:1px solid rgba(255,255,255,.35);
  transition:filter .2s ease,box-shadow .2s ease,transform .2s ease;
}
.header-cta svg{width:18px;height:18px}
.header-cta:hover{filter:brightness(1.08);box-shadow:0 0 34px rgba(53,208,255,.55);transform:translateY(-1px)}
.header-cta:active{transform:translateY(1px)}
.nav-tools{display:flex;align-items:center;gap:14px}
.nav-toggler{
  display:none;
  width:46px;height:46px;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);
  cursor:pointer;
  color:#fff;
}
.nav-toggler span{display:block;width:20px;height:2px;background:#fff;position:relative;transition:background .2s}
.nav-toggler span::before,.nav-toggler span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .2s;
}
.nav-toggler span::before{top:-6px}
.nav-toggler span::after{top:6px}
.site-header.nav-open .nav-toggler span{background:transparent}
.site-header.nav-open .nav-toggler span::before{transform:translateY(6px) rotate(45deg)}
.site-header.nav-open .nav-toggler span::after{transform:translateY(-6px) rotate(-45deg)}

/* Hero */
.hero{
  position:relative;
  min-height:clamp(640px,100vh,820px);
  display:flex;
  align-items:center;
  background:linear-gradient(180deg,#060D1B 0%,var(--ink) 70%,#0B1730 100%);
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(5,11,23,.88) 5%,rgba(8,18,38,.72) 52%,rgba(8,18,38,.35) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  z-index:0;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 75% 20%,rgba(38,132,180,.28),transparent 48%),
    radial-gradient(circle at 10% 90%,rgba(53,208,255,.12),transparent 44%);
  z-index:0;
}
.hero-inner{
  position:relative;
  z-index:3;
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:clamp(80px,10vw,120px) var(--pad) clamp(120px,12vw,160px);
}
.hero-copy{max-width:820px}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  background:rgba(53,208,255,.1);
  border:1px solid rgba(53,208,255,.28);
  color:#BFEBFF;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  padding:7px 15px;
  border-radius:999px;
  margin-bottom:26px;
}
.hero-kicker svg{width:17px;height:17px;color:var(--cyan)}
.hero h1{
  font-size:clamp(30px,5vw,50px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.025em;
  color:#F7FBFF;
  white-space:normal;
  margin-bottom:22px;
}
.hero h1 .gradient-text{
  background:linear-gradient(110deg,#E0F2FE,#35D0FF 45%,#7AE0FF);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;
  -webkit-text-fill-color:transparent;
}
.hero-lead{
  font-size:clamp(16px,2vw,19px);
  line-height:1.8;
  color:#CAD7E8;
  max-width:680px;
  margin-bottom:32px;
}
.hero-lead strong{color:#E9F6FF;font-weight:600}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.hero-note{
  display:flex;
  gap:12px;
  align-items:flex-start;
  max-width:720px;
  margin-top:44px;
  padding:14px 18px;
  border-radius:16px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  font-size:13.5px;
  color:#A9B7C9;
  line-height:1.7;
  backdrop-filter:blur(8px);
}
.hero-note svg{width:21px;height:21px;flex:0 0 auto;color:var(--ok);margin-top:3px}
.hero-note strong{color:#E2EDFB;font-weight:600}

/* 信任条 */
.trustbar{
  position:relative;
  z-index:4;
  border-top:1px solid rgba(255,255,255,.06);
  background:linear-gradient(180deg,rgba(10,20,40,.6),rgba(10,20,40,.2));
}
.trustbar-inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
}
.trust-item{
  padding:22px 24px;
  display:flex;
  align-items:center;
  gap:12px;
  color:#C9D7E6;
  font-size:14px;
  font-weight:500;
  border-right:1px solid rgba(255,255,255,.07);
}
.trust-item:last-child{border-right:0}
.trust-item svg{width:24px;height:24px;color:var(--cyan);flex:0 0 auto}
.trust-item .small-txt{display:block;font-size:12px;color:#8295AE;font-weight:400}

/* 步骤板块 */
.steps{padding:var(--space-lg) 0}
.step-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.step-card{
  position:relative;
  background:#fff;border:1px solid var(--line-deep);
  border-radius:var(--radius);padding:34px 28px 30px;
  box-shadow:var(--shadow-soft);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step-card:hover{
  transform:translateY(-4px);
  box-shadow:0 16px 40px rgba(10,20,40,.1);
  border-color:rgba(53,208,255,.5);
}
.step-num{
  width:46px;height:46px;
  border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--ink),#152D54);
  color:var(--cyan);
  font-size:17px;font-weight:800;
  font-family:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;
  margin-bottom:24px;
  box-shadow:0 10px 22px rgba(10,20,40,.12);
}
.step-card h3{font-size:21px;font-weight:800;color:var(--text-onlight);margin-bottom:12px;line-height:1.4}
.step-card p{font-size:15px;color:var(--text-muted);line-height:1.85}
.step-icon{margin-bottom:20px;color:var(--ink)}
.step-icon svg{width:30px;height:30px}

/* 案例板块 dark */
.cases{padding:var(--space-lg) 0;position:relative;overflow:hidden}
.cases::before{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(circle at 70% 10%,rgba(53,208,255,.13),transparent 42%),
             radial-gradient(circle at 10% 74%,rgba(11,126,168,.18),transparent 50%);
  pointer-events:none;
}
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;position:relative}
.case-card{
  display:flex;
  flex-direction:column;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.09);
  border-radius:var(--radius);
  overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
  height:100%;
}
.case-card:hover{
  transform:translateY(-5px);
  border-color:rgba(53,208,255,.48);
  box-shadow:0 22px 44px rgba(2,8,20,.38);
}
.case-media{aspect-ratio:16/9;overflow:hidden;background:#0F1D38}
.case-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s ease,opacity .4s;
}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-body{padding:26px 26px 28px;display:flex;flex-direction:column;gap:10px;flex:1}
.case-badge{
  display:inline-flex;align-items:center;
  width:max-content;gap:7px;
  background:rgba(53,208,255,.14);
  border:1px solid rgba(53,208,255,.28);
  color:#8DE8FF;
  font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:999px;
}
.case-badge svg{width:13px;height:13px;color:var(--cyan)}
.case-card h3{font-size:20px;font-weight:800;color:#F3F8FF;line-height:1.5}
.case-card p{font-size:14.5px;color:#AEB9CB;line-height:1.8}
.case-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--cyan)}
.case-more svg{width:16px;height:16px;transition:transform .2s}
.case-card:hover .case-more svg{transform:translateX(4px)}

/* FAQ */
.faq{padding:var(--space-lg) 0}
.faq-panel{max-width:920px;margin:0 auto}
.faq-item{
  background:#fff;
  border:1px solid var(--line-deep);
  border-radius:var(--radius);
  box-shadow:0 4px 18px rgba(10,20,40,.03);
  margin-bottom:16px;
  transition:border-color .25s,box-shadow .25s;
}
.faq-item.open{border-color:rgba(53,208,255,.52);box-shadow:0 10px 34px rgba(10,20,40,.08)}
.faq-question{
  display:flex;align-items:center;
  width:100%;text-align:left;
  justify-content:space-between;
  gap:24px;
  padding:22px 24px;
  font-size:16.5px;
  font-weight:700;
  color:var(--text-onlight);
  line-height:1.5;
  cursor:pointer;
  border-radius:var(--radius);
}
.faq-question .q-mark{
  color:var(--cyan);
  font-family:"Inter",monospace;
  margin-right:10px;
}
.faq-toggle{
  position:relative;flex:0 0 auto;
  width:30px;height:30px;
  border-radius:50%;
  background:rgba(53,208,255,.08);
}
.faq-toggle::before,.faq-toggle::after{
  content:"";
  position:absolute;
  background:#0EA3D8;
  border-radius:99px;
  transition:transform .25s ease,opacity .25s;
}
.faq-toggle::before{left:8px;right:8px;top:14px;height:2px}
.faq-toggle::after{top:8px;bottom:8px;left:14px;width:2px}
.faq-item.open .faq-toggle{transform:rotate(45deg)}
.faq-answer{
  display:none;
  padding:0 24px 24px clamp(24px,5vw,48px);
  color:#5D6E82;
  font-size:15.5px;
  line-height:1.9;
}
.faq-item.open .faq-answer{display:block;animation:faqFade .3s ease both}
@keyframes faqFade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* 终 CTA */
.cta-zone{padding:calc(var(--space-lg) * .8) 0;position:relative}
.cta-panel{
  position:relative;
  border-radius:28px;
  padding:clamp(40px,6vw,80px) clamp(24px,6vw,80px);
  text-align:center;
  color:#F4F9FF;
  background:linear-gradient(135deg,#0A1E3D,#0B2B4D 55%,#0F2C47);
  border:1px solid rgba(53,208,255,.35);
  box-shadow:0 0 42px rgba(53,208,255,.14),inset 0 0 60px rgba(53,208,255,.06);
  overflow:hidden;
}
.cta-panel::before{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(circle at 20% 0%,rgba(53,208,255,.22),transparent 44%),
             radial-gradient(circle at 84% 100%,rgba(53,208,255,.14),transparent 50%);
  pointer-events:none;
}
.cta-panel h2{position:relative;font-size:clamp(26px,4vw,40px);font-weight:800;line-height:1.35;max-width:780px;margin:0 auto 18px}
.cta-panel p{position:relative;color:#BCD2E5;font-size:16px;line-height:1.9;max-width:680px;margin:0 auto 32px}
.cta-panel .btn{position:relative}
.cta-note{position:relative;margin-top:20px;font-size:13px;color:#89A4BD}

/* 最新资讯 */
.news{padding:var(--space-lg) 0}
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  background:#fff;
  border:1px solid var(--line-deep);
  border-radius:var(--radius);
  padding:26px 25px;
  display:flex;
  flex-direction:column;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  height:100%;
  box-shadow:var(--shadow-soft);
}
.news-card:hover{
  transform:translateY(-4px);
  border-color:rgba(53,208,255,.5);
  box-shadow:0 14px 38px rgba(10,20,40,.09);
}
.news-topline{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.news-tag{
  display:inline-block;
  background:rgba(14,163,216,.1);
  color:#0B7FB8;
  font-size:12px;font-weight:700;
  padding:5px 12px;
  border-radius:999px;
  line-height:1.4;
  letter-spacing:.02em;
}
.news-date{
  font-family:"Inter","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12.5px;
  font-weight:500;
  color:#94A2B5;
  white-space:nowrap;
}
.news-card h3{font-size:18px;line-height:1.55;font-weight:800;color:var(--text-onlight);margin-bottom:12px}
.news-card h3 a{transition:color .2s}
.news-card h3 a:hover{color:#0891C6}
.news-card .news-desc{
  font-size:14px;color:#67778A;line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:18px;
  flex:1;
}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line-deep);padding-top:16px}
.news-more{font-size:13.5px;font-weight:700;color:#0B7FB8;display:inline-flex;align-items:center;gap:6px}
.news-more svg{width:15px;height:15px;transition:transform .2s}
.news-card:hover .news-more svg{transform:translateX(4px)}
.news-empty{
  grid-column:1/-1;
  background:#fff;
  border:1px dashed #C5D0DC;
  border-radius:18px;
  padding:60px 24px;
  text-align:center;
  color:#8593A6;
  font-size:15px;
}
.news-empty strong{display:block;font-weight:700;color:#51657B;margin-bottom:6px}

/* 安全提示条 */
.safety-strip{
  border-top:1px solid rgba(255,255,255,.07);
  background:rgba(8,16,31,.55);
  padding:22px 0;
}
.safety-strip-inner{display:flex;gap:14px;align-items:flex-start;justify-content:center;text-align:left;color:#8FA3BC;font-size:13px;line-height:1.8}
.safety-strip svg{width:20px;height:20px;flex:0 0 auto;color:var(--warn);margin-top:4px}

/* 页脚 */
.site-footer{background:var(--ink-deep);color:#C7D3E3;border-top:1px solid rgba(255,255,255,.06)}
.footer-main{padding:64px 0 44px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.1fr 1.4fr;gap:36px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-name{color:#EDF5FF}
.footer-desc{font-size:14px;line-height:1.9;color:#8295AF;max-width:360px;margin-top:16px}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#92A9C2;margin-bottom:18px}
.footer-links li+li{margin-top:12px}
.footer-links a{font-size:14.5px;color:#B6C6DA;transition:color .2s,padding-left .2s}
.footer-links a:hover{color:var(--cyan);padding-left:4px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:14px;font-size:14px;color:#B6C6DA;line-height:1.7}
.footer-contact svg{width:19px;height:19px;color:var(--cyan);flex:0 0 auto;margin-top:3px}
.footer-figure{border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.1)}
.footer-figure img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}
.footer-figure figcaption{padding:10px 12px;background:rgba(255,255,255,.05);font-size:12px;color:#8FA3BC;text-align:center}
.footer-bottom{border-top:1px solid rgba(255,255,255,.07);padding:22px 0}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px;color:#7590AA}
.footer-bottom-inner a{color:#A8BFD4;transition:color .2s}
.footer-bottom-inner a:hover{color:var(--cyan)}

/* 响应式 */
@media (max-width:1180px){
  .trust-item{padding:18px 16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:1024px){
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    height:100vh;
    width:min(420px,90vw);
    flex-direction:column;
    align-items:stretch;
    background:rgba(8,16,31,.98);
    backdrop-filter:blur(22px);
    border-left:1px solid rgba(255,255,255,.08);
    padding:100px 24px 30px;
    transform:translateX(102%);
    transition:transform .28s ease;
    z-index:70;
    box-shadow:-22px 0 50px rgba(0,0,0,.4);
  }
  .nav-links .nav-link{
    font-size:18px;
    padding:14px 12px;
    border-radius:14px;
    border-bottom:1px solid rgba(255,255,255,.05);
    justify-content:space-between;
  }
  .nav-links .nav-link::after{display:none}
  .nav-links .nav-link.active{background:rgba(53,208,255,.1);color:var(--cyan)}
  .site-header.nav-open .nav-links{transform:none}
  .nav-toggler{display:inline-flex;z-index:90;position:relative}
  .header-cta{padding:0 14px;font-size:14px;gap:4px}
  .header-cta span.desktop{display:none}
}
@media (max-width:860px){
  .step-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .news-grid{grid-template-columns:1fr;}
  .news-empty{grid-column:auto}
  .trustbar-inner{grid-template-columns:repeat(2,1fr)}
  .trust-item:nth-child(2){border-right:0}
  .trust-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.07)}
}
@media (max-width:640px){
  .case-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .case-body{padding:22px 20px}
  .cta-panel{border-radius:20px}
  .hero-actions .btn{width:100%;max-width:none}
  .safety-strip-inner{padding:0 6px}
}
@media (max-width:520px){
  .header-cta{min-height:44px;font-size:13.5px;padding:0 12px}
  .brand-name{font-size:16.5px}
  .brand-mark{width:38px;height:38px;border-radius:11px}
  .header-inner{min-height:68px;gap:10px}
  .hero h1{font-size:clamp(27px,7.4vw,34px);line-height:1.35;letter-spacing:-.02em}
  .hero-lead{font-size:15.5px}
  .trustbar-inner{grid-template-columns:1fr 1fr}
  .trust-item{padding:14px;font-size:13px}
  .trust-item .small-txt{font-size:11px}
  .footer-grid{grid-template-columns:1fr}
  .footer-main{padding-top:48px}
  .footer-bottom-inner{justify-content:center;text-align:center}
  .section{padding:60px 0}
  .section-title{line-height:1.4}
}

/* roulang page: category1 */
:root {
      --bg-deep: #0A1428;
      --bg-card: #101D38;
      --bg-soft: #F5F8FC;
      --bg-clean: #FFFFFF;
      --accent: #35D0FF;
      --accent-soft: #7AE0FF;
      --text-main: #172033;
      --text-deep: #0B1426;
      --text-light: #F0F7FE;
      --text-muted: #7B89A3;
      --border-dark: rgba(255, 255, 255, 0.09);
      --border-light: #E3EAF2;
      --radius-card: 16px;
      --radius-btn: 12px;
      --shadow-card-light: 0 4px 20px rgba(10, 20, 40, 0.06);
      --shadow-card-dark: 0 18px 48px rgba(1, 8, 20, 0.34);
      --max-width: 1280px;
      --space-section: clamp(64px, 8vw, 112px);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      background: var(--bg-deep);
      color: var(--text-light);
      -webkit-font-smoothing: antialiased;
    }

    body.no-scroll {
      overflow: hidden;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease, border-color .2s ease, background .2s ease, opacity .2s ease;
    }

    button,
    input {
      font-family: inherit;
    }

    ul {
      padding: 0;
      margin: 0;
    }

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding-left: clamp(16px, 4vw, 48px);
      padding-right: clamp(16px, 4vw, 48px);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 80;
      height: 78px;
      background: rgba(8, 16, 31, 0.78);
      backdrop-filter: blur(14px) saturate(150%);
      -webkit-backdrop-filter: blur(14px) saturate(150%);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: background .3s ease, box-shadow .3s ease;
    }

    .site-header.scrolled {
      background: rgba(8, 16, 31, 0.94);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    }

    .header-inner {
      height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      color: #fff;
      flex-shrink: 0;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 11px;
      color: var(--accent);
      background: linear-gradient(135deg, rgba(53, 208, 255, .18), rgba(53, 208, 255, .05));
      border: 1px solid rgba(53, 208, 255, .3);
      box-shadow: 0 0 0 4px rgba(53, 208, 255, .06);
    }

    .brand-mark svg {
      width: 21px;
      height: 21px;
    }

    .brand-name {
      display: block;
      font-size: 17px;
      font-weight: 800;
      letter-spacing: .01em;
      line-height: 1.2;
      color: #fff;
    }

    .brand-site {
      display: block;
      font-size: 12px;
      color: rgba(255, 255, 255, 0.56);
      line-height: 1.4;
      margin-top: 2px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-link {
      position: relative;
      padding: 9px 13px;
      font-size: 15px;
      font-weight: 500;
      color: rgba(255, 255, 255, 0.78);
      border-radius: 10px;
      white-space: nowrap;
      transition: color .2s ease;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      left: 15px;
      right: 15px;
      bottom: 2px;
      height: 2px;
      background: linear-gradient(90deg, var(--accent), transparent 130%);
      border-radius: 2px;
      opacity: 0;
      transform: scaleX(.5);
      transform-origin: left center;
      transition: opacity .2s ease, transform .2s ease;
    }

    .nav-link:hover {
      color: #fff;
    }

    .nav-link:hover::after,
    .nav-link.active::after {
      opacity: 1;
      transform: scaleX(1);
    }

    .nav-link.active {
      color: #fff;
      font-weight: 600;
    }

    .nav-tools {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .header-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 44px;
      padding: 0 18px;
      border-radius: 12px;
      font-size: 14px;
      font-weight: 700;
      color: #03121f;
      background: linear-gradient(135deg, #35D0FF, #7AE0FF);
      box-shadow: 0 0 24px rgba(53, 208, 255, 0.32);
      transition: transform .2s ease, box-shadow .2s ease, brightness .2s ease;
      line-height: 1;
    }

    .header-cta svg {
      width: 18px;
      height: 18px;
    }

    .header-cta .desktop {
      display: inline;
    }

    .header-cta > span:last-child {
      display: none;
    }

    .header-cta:hover {
      box-shadow: 0 0 38px rgba(53, 208, 255, 0.55);
      filter: brightness(1.08);
      transform: translateY(-1px);
    }

    .header-cta:active {
      transform: translateY(1px);
      box-shadow: 0 0 14px rgba(53, 208, 255, .3);
    }

    .nav-toggler {
      display: none;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 12px;
      cursor: pointer;
    }

    .nav-toggler span,
    .nav-toggler span::before,
    .nav-toggler span::after {
      content: "";
      display: block;
      width: 18px;
      height: 2px;
      background: #fff;
      border-radius: 3px;
      transition: transform .35s ease, opacity .2s ease;
    }

    .nav-toggler span {
      position: relative;
    }

    .nav-toggler span::before {
      position: absolute;
      top: -6px;
    }

    .nav-toggler span::after {
      position: absolute;
      top: 6px;
    }

    .nav-toggler.open span {
      background: transparent;
    }

    .nav-toggler.open span::before {
      transform: translateY(6px) rotate(45deg);
    }

    .nav-toggler.open span::after {
      transform: translateY(-6px) rotate(-45deg);
    }

    main {
      display: block;
    }

    .crumb-wrap {
      position: relative;
      z-index: 2;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      padding: 18px 0 8px;
      font-size: 13px;
      color: #6f7d94;
      letter-spacing: .02em;
    }

    .breadcrumb a {
      color: #5a6981;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .breadcrumb a:hover {
      color: var(--accent);
    }

    .breadcrumb i {
      font-style: normal;
      font-size: 12px;
      color: #abb7c9;
    }

    .breadcrumb .current {
      color: #7f8ea8;
      font-weight: 500;
    }

    .cat-hero-light {
      background: var(--bg-soft);
      color: var(--text-deep);
      background-image: linear-gradient(120deg, rgba(255, 255, 255, 0.3), transparent 42%), radial-gradient(circle at 88% 20%, rgba(53, 208, 255, 0.12), transparent 420px);
    }

    .cat-hero-inner {
      padding: 34px 0 46px;
    }

    .cat-title {
      max-width: 980px;
      margin: 12px 0 18px;
      font-size: clamp(34px, 5vw, 46px);
      line-height: 1.2;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-deep);
    }

    .cat-title .emphasis {
      background: linear-gradient(120deg, #0A8FC4, #35D0FF);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .cat-subtitle {
      max-width: 760px;
      margin: 0;
      font-size: 17px;
      color: #54637a;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 15px;
      margin-top: 32px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 48px;
      border-radius: 12px;
      padding: 0 22px;
      border: 1px solid transparent;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      line-height: 1;
      transition: all .2s ease;
    }

    .btn svg {
      width: 18px;
      height: 18px;
    }

    .btn-primary {
      color: #03121F;
      background: linear-gradient(135deg, #35D0FF, #7AE0FF);
      box-shadow: 0 0 24px rgba(53, 208, 255, 0.3);
    }

    .btn-primary:hover {
      box-shadow: 0 0 38px rgba(53, 208, 255, 0.52);
      filter: brightness(1.08);
      transform: translateY(-2px);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 0 12px rgba(53, 208, 255, .24);
    }

    .btn-ghost {
      background: rgba(53, 208, 255, 0.04);
      border-color: rgba(18, 64, 90, 0.2);
      color: var(--text-deep);
    }

    .btn-ghost:hover {
      background: rgba(53, 208, 255, 0.1);
      border-color: rgba(53, 208, 255, .32);
    }

    .light-bg .btn-ghost {
      border-color: #cbd7e5;
      color: #243249;
    }

    .trust-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      margin: 30px 0 0;
      padding: 0;
      list-style: none;
    }

    .trust-strip li {
      display: flex;
      align-items: center;
      gap: 9px;
      padding: 13px 14px;
      border: 1px solid #e2eaf2;
      background: rgba(255, 255, 255, 0.6);
      border-radius: 14px;
      font-size: 14px;
      font-weight: 500;
      color: #33445c;
    }

    .trust-strip svg {
      width: 18px;
      height: 18px;
      flex-shrink: 0;
      color: #0da6d8;
    }

    section.deep-block {
      background: var(--bg-deep);
      background-image:
        radial-gradient(circle at 80% 5%, rgba(53, 208, 255, 0.08), transparent 520px),
        radial-gradient(circle at 5% 65%, rgba(255, 255, 255, 0.025), transparent 320px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .section-inner {
      padding-top: var(--space-section);
      padding-bottom: var(--space-section);
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: rgba(53, 208, 255, 0.1);
      border: 1px solid rgba(53, 208, 255, 0.18);
      color: var(--accent);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      line-height: 1;
      margin-bottom: 16px;
    }

    .light-section-kicker {
      background: rgba(10, 132, 178, 0.1);
      border: 1px solid rgba(10, 132, 178, 0.14);
      color: #0882ad;
    }

    h2.section-title {
      max-width: 900px;
      margin: 0 0 12px;
      font-size: clamp(28px, 4vw, 36px);
      line-height: 1.25;
      font-weight: 800;
      color: #fff;
    }

    .light-section h2.section-title {
      color: var(--text-deep);
    }

    .section-lead {
      max-width: 760px;
      margin: 0;
      color: #a6b6d0;
      font-size: 16px;
      line-height: 1.8;
    }

    .light-section .section-lead {
      color: #5b6b82;
    }

    .verify-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 38px;
    }

    .verify-card {
      background: rgba(255, 255, 255, 0.055);
      backdrop-filter: blur(10px);
      border: 1px solid var(--border-dark);
      border-radius: 16px;
      padding: 24px 22px;
      transition: background .25s ease, transform .25s ease, border-color .25s ease, box-shadow .25s ease;
    }

    .verify-card:hover {
      transform: translateY(-4px);
      background: rgba(255, 255, 255, 0.09);
      border-color: rgba(53, 208, 255, 0.25);
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
    }

    .verify-icon {
      width: 46px;
      height: 46px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(53, 208, 255, 0.13);
      color: var(--accent);
      border: 1px solid rgba(53, 208, 255, 0.18);
      margin-bottom: 17px;
    }

    .verify-icon svg {
      width: 22px;
      height: 22px;
    }

    .verify-card h3 {
      margin: 0 0 8px;
      font-size: 17px;
      color: #fff;
      font-weight: 700;
    }

    .verify-card p {
      margin: 0;
      font-size: 14px;
      line-height: 1.75;
      color: #93a6c2;
    }

    .light-section {
      background: var(--bg-soft);
      color: var(--text-deep);
    }

    .light-section .card-light {
      background: #fff;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card-light);
    }

    .split-visual {
      display: grid;
      grid-template-columns: 1.04fr 0.96fr;
      align-items: center;
      gap: 44px;
      margin-top: 42px;
    }

    .visual-frame {
      position: relative;
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid #dce5ef;
      box-shadow: 0 18px 48px rgba(15, 36, 60, 0.1);
      line-height: 0;
    }

    .visual-frame img {
      width: 100%;
      height: 310px;
      object-fit: cover;
    }

    .visual-frame .img-mask {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(5, 16, 32, 0.66), transparent 58%);
    }

    .visual-caption {
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 16px;
      margin: 0;
      color: rgba(255, 255, 255, 0.92);
      font-size: 14px;
      line-height: 1.6;
      font-weight: 500;
      padding: 10px 13px;
      background: rgba(8, 16, 31, 0.38);
      border-radius: 12px;
      backdrop-filter: blur(6px);
      border: 1px solid rgba(255, 255, 255, 0.12);
      letter-spacing: 0.02em;
    }

    .check-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 14px;
    }

    .check-list li {
      position: relative;
      padding: 17px 18px;
      background: #fff;
      border: 1px solid #e4ebf3;
      border-radius: 14px;
      box-shadow: 0 3px 12px rgba(10, 20, 40, 0.03);
      display: flex;
      gap: 13px;
      align-items: flex-start;
      transition: border-color .2s ease, transform .2s ease;
    }

    .check-list li:hover {
      border-color: rgba(53, 208, 255, 0.4);
      transform: translateX(3px);
    }

    .check-list .tick-icon {
      width: 23px;
      height: 23px;
      margin-top: 3px;
      flex-shrink: 0;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(53, 208, 255, 0.18);
      color: #06769b;
    }

    .check-list svg {
      width: 13px;
      height: 13px;
    }

    .check-list b {
      display: block;
      font-size: 15px;
      color: #1a2a42;
    }

    .check-list span {
      display: block;
      margin-top: 2px;
      font-size: 14px;
      color: #5c6b80;
      line-height: 1.75;
    }

    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 42px;
    }

    .step-card {
      position: relative;
      padding: 24px 20px 24px 22px;
      background: rgba(255, 255, 255, 0.055);
      border: 1px solid rgba(255, 255, 255, 0.09);
      border-radius: 16px;
      min-height: 220px;
      overflow: hidden;
    }

    .step-card .step-num {
      font-family: "SFMono-Regular", Consolas, "Roboto Mono", monospace;
      font-size: 13px;
      color: var(--accent);
      letter-spacing: .12em;
      font-weight: 600;
    }

    .step-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 52px;
      border-radius: 0 0 6px 0;
      background: linear-gradient(180deg, var(--accent), rgba(53, 208, 255, 0.1));
    }

    .step-card h3 {
      margin: 20px 0 8px;
      font-size: 17px;
      color: #fff;
    }

    .step-card p {
      margin: 0;
      font-size: 14px;
      color: #a0b1cb;
      line-height: 1.8;
    }

    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-top: 42px;
    }

    .scenario-card {
      display: flex;
      flex-direction: column;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 16px;
      padding: 26px 24px;
      transition: transform .22s ease, border-color .22s ease, background .22s ease;
    }

    .scenario-card:hover {
      transform: translateY(-4px);
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(53, 208, 255, 0.28);
    }

    .scenario-card .scenario-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: rgba(53, 208, 255, 0.12);
      color: var(--accent);
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 16px;
    }

    .scenario-card svg {
      width: 20px;
      height: 20px;
    }

    .scenario-card h3 {
      margin: 0 0 8px;
      font-size: 17px;
      color: #fff;
    }

    .scenario-card p {
      margin: 0 0 12px;
      font-size: 14px;
      color: #9babc5;
      line-height: 1.75;
    }

    .scenario-card .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: auto;
      padding-top: 8px;
    }

    .mini-tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid rgba(255, 255, 255, 0.08);
      color: #c4d1e4;
      font-size: 12px;
      line-height: 1.5;
      font-weight: 500;
    }

    .compact-note {
      display: flex;
      gap: 18px;
      align-items: flex-start;
      padding: 24px 26px;
      margin-top: 38px;
      border: 1px solid rgba(53, 208, 255, 0.18);
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(53, 208, 255, 0.09), rgba(255, 255, 255, 0.03));
      color: #d9e7ff;
    }

    .compact-note svg {
      width: 28px;
      height: 28px;
      flex-shrink: 0;
      color: var(--accent);
      margin-top: 3px;
    }

    .compact-note b {
      color: #fff;
    }

    .compact-note p {
      margin: 0;
      font-size: 14px;
      line-height: 1.85;
    }

    .faq-panel {
      max-width: 1000px;
      margin: 40px auto 0;
    }

    .faq-item {
      background: #fff;
      border: 1px solid #e2eaf2;
      border-radius: 16px;
      box-shadow: var(--shadow-card-light);
      padding: 0;
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color .2s ease, box-shadow .2s ease;
    }

    .faq-item.active {
      border-color: rgba(53, 208, 255, 0.4);
      box-shadow: 0 8px 24px rgba(10, 20, 40, 0.07);
    }

    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      border: 0;
      background: transparent;
      padding: 20px 22px;
      text-align: left;
      font-size: 16px;
      font-weight: 700;
      color: #1b2a42;
      cursor: pointer;
      line-height: 1.5;
    }

    .faq-question svg {
      width: 18px;
      height: 18px;
      transition: transform .3s ease;
      color: #8295ad;
      flex-shrink: 0;
    }

    .faq-item.active .faq-question svg {
      transform: rotate(45deg);
      color: #0aa6dc;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .35s ease;
    }

    .faq-answer-inner {
      padding: 0 22px 22px;
      font-size: 15px;
      line-height: 1.9;
      color: #52617a;
    }

    .cta-card-wrap {
      padding-top: 28px;
      padding-bottom: calc(var(--space-section));
    }

    .cta-card {
      max-width: 860px;
      margin: 0 auto;
      position: relative;
      background: linear-gradient(135deg, rgba(15, 30, 58, 0.96), rgba(10, 20, 40, 0.98)), url('/assets/images/backpic/back-2.webp') no-repeat center / cover;
      padding: 48px 48px;
      border-radius: 24px;
      border: 1px solid rgba(53, 208, 255, 0.25);
      box-shadow: 0 0 60px rgba(53, 208, 255, 0.12), 0 24px 50px rgba(0, 0, 0, 0.25);
      text-align: center;
      overflow: hidden;
    }

    .cta-card::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(5, 13, 27, 0.3);
      pointer-events: none;
    }

    .cta-inner {
      position: relative;
      z-index: 1;
    }

    .cta-card h2 {
      margin: 0 0 10px;
      font-size: clamp(28px, 4vw, 40px);
      color: #fff;
      line-height: 1.3;
      font-weight: 800;
      letter-spacing: -0.02em;
    }

    .cta-card p {
      margin: 0 auto 26px;
      max-width: 640px;
      color: #bfcfe4;
      font-size: 16px;
      line-height: 1.8;
    }

    .cta-card .btn-primary {
      height: 52px;
      padding: 0 28px;
      font-size: 16px;
    }

    .site-footer {
      background: #08101f;
      color: #a6b2c6;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .footer-main {
      padding: 64px 0 40px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.3fr 1fr;
      gap: 32px;
    }

    .footer-brand .brand-name {
      color: #fff;
    }

    .footer-brand .brand-site {
      color: rgba(255, 255, 255, 0.5);
    }

    .footer-desc {
      margin: 18px 0 0;
      max-width: 320px;
      font-size: 14px;
      line-height: 1.8;
      color: #8190a8;
    }

    .footer-title {
      margin: 0 0 16px;
      font-size: 15px;
      font-weight: 700;
      color: #fff;
    }

    .footer-links,
    .footer-contact {
      list-style: none;
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
    }

    .footer-links a {
      color: #8d9cb3;
      display: inline-flex;
      align-items: center;
      font-size: 14px;
    }

    .footer-links a::before {
      content: "";
      width: 5px;
      height: 5px;
      border-radius: 50%;
      flex-shrink: 0;
      background: rgba(53, 208, 255, 0.5);
      margin-right: 8px;
    }

    .footer-links a:hover {
      color: #fff;
      transform: translateX(2px);
    }

    .footer-contact li {
      display: flex;
      gap: 8px;
      align-items: flex-start;
      font-size: 14px;
      color: #8d9cb3;
      line-height: 1.7;
    }

    .footer-contact svg {
      width: 17px;
      height: 17px;
      flex-shrink: 0;
      margin-top: 3px;
      color: #35D0FF;
      opacity: .75;
    }

    .footer-figure {
      margin: 0;
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(255, 255, 255, 0.04);
    }

    .footer-figure img {
      display: block;
      width: 100%;
      height: 118px;
      object-fit: cover;
    }

    .footer-figure figcaption {
      padding: 8px 10px;
      font-size: 12px;
      color: #667694;
    }

    .footer-notice {
      padding: 20px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      justify-content: space-between;
      gap: 20px;
      flex-wrap: wrap;
      font-size: 13px;
      color: #6d7c94;
    }

    .footer-notice a {
      color: #7ea2c0;
    }

    @media (max-width: 1080px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 1024px) {
      .header-cta .desktop {
        display: none;
      }
      .header-cta > span:last-child {
        display: inline;
      }
      .header-cta {
        padding: 0 15px;
      }
      .verify-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .nav-links {
        position: fixed;
        inset: 0 0 0 auto;
        width: min(400px, 86vw);
        background: rgba(8, 16, 31, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        gap: 8px;
        padding: 90px 28px 32px;
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        transition: transform .35s ease, opacity .3s ease, visibility .3s;
        z-index: 79;
        overflow-y: auto;
      }

      .nav-links.open {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
      }

      .nav-link {
        font-size: 17px;
        padding: 14px 10px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        color: #fff;
        border-radius: 0;
      }

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

      .nav-toggler {
        display: inline-flex;
      }

      .nav-tools {
        margin-left: auto;
      }
    }

    @media (max-width: 820px) {
      .split-visual {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .trust-strip {
        grid-template-columns: repeat(2, 1fr);
      }

      .scenario-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 640px) {
      .brand-site {
        display: none;
      }

      .brand-name {
        font-size: 16px;
      }

      .nav-links {
        width: 100%;
        padding: 90px 20px 28px;
      }

      .header-cta {
        width: 44px;
        height: 44px;
        padding: 0;
        justify-content: center;
      }

      .header-cta svg {
        margin: 0;
      }

      .header-cta span {
        display: none !important;
      }

      .cat-hero-inner {
        padding: 22px 0 34px;
      }

      .cat-title {
        font-size: 32px;
      }

      .cat-subtitle {
        font-size: 15px;
      }

      .verify-grid,
      .process-steps {
        grid-template-columns: 1fr;
      }

      .trust-strip {
        grid-template-columns: 1fr;
      }

      .scenario-card {
        padding: 22px 18px;
      }

      .cta-card {
        padding: 36px 22px;
        border-radius: 18px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 26px;
      }

      .footer-main {
        padding-top: 46px;
      }

      .faq-question {
        font-size: 15px;
      }

      .footer-notice {
        flex-direction: column;
      }

      .check-list li {
        flex-direction: column;
      }
    }

    @media (max-width: 420px) {
      .section-lead {
        font-size: 15px;
      }

      .visual-frame img {
        height: 220px;
      }

      .btn {
        width: 100%;
      }

      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
    }

/* roulang page: article */
:root {
            --bg-deep: #0A1428;
            --bg-navy: #101D38;
            --brand: #35D0FF;
            --brand-light: #7AE0FF;
            --paper: #F5F8FC;
            --ink: #132033;
            --muted: #7C8EA6;
            --border-light: rgba(255, 255, 255, 0.09);
            --border-soft: #E5EBF3;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-card: 0 10px 30px rgba(10, 20, 40, 0.06);
            --shadow-glow: 0 0 24px rgba(53, 208, 255, 0.35);
            --transition: all .25s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-deep);
            color: var(--ink);
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Inter", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--brand);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        :focus-visible {
            outline: 2px solid rgba(53, 208, 255, .85);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container {
            max-width: 1280px;
            width: 100%;
            margin: 0 auto;
            padding-left: clamp(16px, 4vw, 48px);
            padding-right: clamp(16px, 4vw, 48px);
        }

        /* ---------- header ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(10, 20, 40, 0.82);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            gap: 16px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: #ffffff;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: linear-gradient(145deg, rgba(53, 208, 255, .22), rgba(53, 208, 255, .06));
            border: 1px solid rgba(53, 208, 255, .3);
            color: var(--brand);
        }
        .brand-name {
            display: block;
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: .02em;
            line-height: 1.2;
        }
        .brand-site {
            display: block;
            font-size: 11px;
            color: #7d90ac;
            letter-spacing: .04em;
            line-height: 1.1;
            margin-top: 4px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            position: relative;
            color: #c7d2e2;
            font-size: 15px;
            font-weight: 500;
            padding: 10px 2px;
            white-space: nowrap;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            right: 100%;
            bottom: 2px;
            height: 2px;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--brand), var(--brand-light));
            transition: right .25s ease;
        }
        .nav-link:hover {
            color: #ffffff;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            right: 0;
        }
        .nav-link.active {
            color: #ffffff;
            font-weight: 700;
        }
        .nav-tools {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 18px;
            border-radius: 12px;
            background: linear-gradient(135deg, #35D0FF, #7AE0FF);
            color: #03121F;
            font-size: 14px;
            font-weight: 700;
            white-space: nowrap;
            box-shadow: 0 0 24px rgba(53, 208, 255, .32);
            transition: transform .2s ease, box-shadow .25s ease, filter .2s ease;
        }
        .header-cta:hover {
            color: #05121F;
            filter: brightness(1.08);
            box-shadow: 0 0 38px rgba(53, 208, 255, .5);
            transform: translateY(-1px);
        }
        .header-cta:active {
            transform: translateY(1px);
            box-shadow: 0 0 18px rgba(53, 208, 255, .3);
        }
        .header-cta svg {
            width: 17px;
            height: 17px;
        }
        .header-cta span:not(.desktop) {
            display: none;
        }
        .nav-toggler {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid rgba(255, 255, 255, .16);
            background: rgba(255, 255, 255, .04);
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .nav-toggler span,
        .nav-toggler span::before,
        .nav-toggler span::after {
            content: "";
            display: block;
            width: 18px;
            height: 2px;
            background: #ffffff;
            border-radius: 99px;
            transition: all .25s ease;
        }
        .nav-toggler span {
            position: relative;
        }
        .nav-toggler span::before {
            position: absolute;
            top: -6px;
            left: 0;
        }
        .nav-toggler span::after {
            position: absolute;
            bottom: -6px;
            left: 0;
        }
        .nav-toggler.open span {
            background: transparent;
        }
        .nav-toggler.open span::before {
            top: 0;
            transform: rotate(45deg);
        }
        .nav-toggler.open span::after {
            bottom: 0;
            transform: rotate(-45deg);
        }

        /* ---------- main: article ---------- */
        .post-page-main {
            background: #fff;
            padding-bottom: 48px;
        }
        .post-topbar {
            background: #FBFDFF;
            border-bottom: 1px solid var(--border-soft);
            padding: 18px 0;
        }
        .post-btnbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .breadcrumb-list {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #596A82;
            line-height: 1.4;
        }
        .breadcrumb-list a {
            color: #42526B;
            font-weight: 500;
        }
        .breadcrumb-list a:hover {
            color: var(--brand);
        }
        .breadcrumb-sep {
            display: inline-flex;
            opacity: .55;
            color: #93A2B8;
        }
        .breadcrumb-sep svg {
            width: 15px;
            height: 15px;
            display: block;
        }
        .breadcrumb-current {
            color: #0E1A2C;
            font-weight: 600;
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .post-reader {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 clamp(16px, 4vw, 32px);
        }

        /* ---------- article header ---------- */
        .post-header {
            padding-top: 48px;
            padding-bottom: 12px;
        }
        .post-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: linear-gradient(135deg, rgba(53, 208, 255, .14), rgba(122, 224, 255, .08));
            border: 1px solid rgba(53, 208, 255, .3);
            color: #0872A8;
            font-size: 13px;
            font-weight: 600;
        }
        .post-header h1 {
            font-size: clamp(30px, 4.2vw, 42px);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: #0E1A2C;
            margin: 18px 0 22px;
        }
        .post-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px 24px;
            color: #71839B;
            font-size: 14px;
            padding-bottom: 22px;
            border-bottom: 1px solid var(--border-soft);
        }
        .post-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .post-meta-item svg {
            width: 16px;
            height: 16px;
            opacity: .75;
        }
        .post-meta-item time {
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
            color: #4B5C72;
            font-weight: 500;
        }

        /* ---------- body ---------- */
        .article-wrap {
            background: #fff;
            padding-top: 14px;
        }
        .article-body {
            padding-top: 12px;
            color: #1D2B3C;
        }
        .article-body p {
            margin: 0 0 1.4em;
            font-size: 16px;
            line-height: 1.9;
            word-break: break-word;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 800;
            margin: 46px 0 18px;
            color: #0E1A2C;
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 34px 0 14px;
            color: #142135;
        }
        .article-body blockquote {
            margin: 28px 0;
            padding: 22px 26px;
            background: #F3F8FE;
            border-left: 4px solid var(--brand);
            border-radius: 0 16px 16px 0;
            color: #324763;
            font-size: 15px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.6em;
            padding-left: 1.25rem;
        }
        .article-body ul {
            list-style: disc;
        }
        .article-body ol {
            list-style: decimal;
        }
        .article-body li {
            margin-bottom: .45rem;
            line-height: 1.8;
        }
        .article-body img {
            border-radius: 12px;
            margin: 28px 0;
            box-shadow: 0 8px 28px rgba(10, 20, 40, .08);
        }
        .article-body figure {
            margin: 28px 0;
        }
        .article-body figcaption {
            font-size: 13px;
            color: #8A99AF;
            text-align: center;
            margin-top: -14px;
            margin-bottom: 10px;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 14px;
            background: #fff;
            border: 1px solid #DDE6F0;
            border-radius: 12px;
            overflow: hidden;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid #E2EAF3;
            padding: 12px 14px;
            text-align: left;
        }
        .article-body table th {
            background: #F2F7FC;
            font-weight: 700;
            color: #12304A;
        }
        .article-body table tbody tr:nth-child(even) {
            background: #F9FBFE;
        }
        .article-body a {
            color: #0B75AC;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: #0891D4;
        }

        /* not found */
        .post-unfound {
            border: 1px dashed #C6D4E4;
            background: #F7FAFD;
            border-radius: 18px;
            padding: 56px 24px;
            text-align: center;
            color: #6B7E96;
            margin: 44px 0 24px;
        }
        .post-unfound strong {
            display: block;
            font-size: 20px;
            color: #2A3D58;
            margin-bottom: 8px;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 22px;
            border-radius: 12px;
            background: linear-gradient(135deg, #35D0FF, #7AE0FF);
            color: #03121F;
            font-weight: 700;
            font-size: 14px;
            margin-top: 22px;
            box-shadow: 0 0 20px rgba(53, 208, 255, .2);
            transition: all .25s ease;
        }
        .btn-back:hover {
            color: #03121F;
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(53, 208, 255, .4);
        }

        /* ---------- article footer ---------- */
        .post-foot {
            margin-top: 56px;
            padding: 28px 0 10px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .post-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .post-tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 15px;
            border-radius: 999px;
            background: #EFF4FA;
            border: 1px solid #DFE8F2;
            color: #2B3D55;
            font-size: 13px;
            font-weight: 500;
        }
        .post-actions {
            display: flex;
            gap: 10px;
            margin-left: auto;
        }
        .post-action-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 42px;
            padding: 0 16px;
            border-radius: 12px;
            border: 1px solid #C9D6E5;
            background: rgba(255, 255, 255, .6);
            color: #40536E;
            font-size: 14px;
            font-weight: 600;
            transition: all .25s ease;
        }
        .post-action-btn svg {
            width: 16px;
            height: 16px;
        }
        .post-action-btn:hover {
            color: #087CB4;
            border-color: #35D0FF;
            background: #F0FAFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(53, 208, 255, .12);
        }
        .post-action-btn:active {
            transform: translateY(0);
        }
        .post-action-btn.is-active {
            border-color: #35D0FF;
            background: #E9F8FF;
            color: #0872A8;
        }

        /* ---------- article pagination ---------- */
        .post-btm-guide {
            margin-top: 46px;
            padding: 32px 0;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .post-guide-col {
            border-radius: 16px;
            background: #F8FAFD;
            border: 1px solid #E4EBF3;
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 8px;
            transition: all .25s ease;
        }
        .post-guide-col:hover {
            border-color: rgba(53, 208, 255, .5);
            background: #F4FAFE;
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(10, 20, 40, .05);
        }
        .post-guide-col.right {
            align-items: flex-end;
            text-align: right;
        }
        .post-guide-label {
            font-size: 12px;
            color: #8596AC;
            font-weight: 600;
            letter-spacing: .04em;
        }
        .post-guide-col strong {
            font-size: 15px;
            color: #152338;
            font-weight: 700;
            line-height: 1.5;
        }
        .post-guide-col span,
        .post-guide-col strong {
            max-width: 100%;
        }

        /* ---------- related ---------- */
        .post-related {
            background: #F5F8FC;
            padding: 72px 0 88px;
            margin-top: 8px;
        }
        .section-head {
            margin-bottom: 42px;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .08em;
            color: #0B86BE;
            margin-bottom: 10px;
        }
        .section-head h2 {
            font-size: clamp(26px, 3vw, 32px);
            font-weight: 800;
            color: #0E1A2C;
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .section-head p {
            max-width: 600px;
            color: #73849C;
            font-size: 15px;
            margin: 0;
        }
        .related-grid,
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 26px;
        }
        .content-card {
            position: relative;
            background: #ffffff;
            border: 1px solid #E5EBF3;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(10, 20, 40, 0.04);
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-5px);
            border-color: rgba(53, 208, 255, .55);
            box-shadow: 0 20px 46px rgba(10, 20, 40, .10);
        }
        .content-card-thumb {
            display: block;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #DCE7F2;
            position: relative;
        }
        .content-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s ease;
        }
        .content-card:hover .content-card-thumb img {
            transform: scale(1.03);
        }
        .content-card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }
        .content-tag {
            display: inline-flex;
            align-items: center;
            width: fit-content;
            padding: 4px 12px;
            border-radius: 999px;
            background: #E7F6FE;
            color: #087CB4;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .02em;
        }
        .content-card-body h3 {
            font-size: 17px;
            line-height: 1.5;
            font-weight: 750;
            margin: 0;
        }
        .content-card-body h3 a {
            color: #1A2839;
        }
        .content-card-body h3 a:hover {
            color: #087CB4;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .content-card-desc {
            color: #698098;
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card-meta {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            color: #8596AC;
            font-size: 13px;
            padding-top: 8px;
            border-top: 1px solid #EEF3F8;
        }
        .content-card-meta .enter {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            color: #187AA8;
            font-weight: 600;
        }
        .content-card-meta .enter svg {
            width: 14px;
            height: 14px;
        }

        /* ---------- footer ---------- */
        .site-footer {
            background: #08101F;
            color: #A4B3CA;
            padding-top: 64px;
            border-top: 1px solid rgba(255, 255, 255, .06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 0.8fr 1.1fr 1fr;
            gap: 44px;
            padding-bottom: 52px;
        }
        .footer-brand .brand {
            margin-bottom: 16px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #8E9FBB;
            max-width: 330px;
            margin: 14px 0 0;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #E8EFF7;
            margin: 6px 0 22px;
            letter-spacing: .03em;
        }
        .footer-links,
        .footer-contact {
            display: grid;
            gap: 12px;
        }
        .footer-links a,
        .footer-contact li {
            color: #93A4BE;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: #35D0FF;
        }
        .footer-contact svg {
            width: 16px;
            height: 16px;
            opacity: .75;
            flex-shrink: 0;
        }
        .footer-figure {
            margin: 0;
            border-radius: 14px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, .1);
            max-width: 220px;
        }
        .footer-figure img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .footer-figure figcaption {
            background: rgba(255, 255, 255, .04);
            font-size: 12px;
            color: #7C90AC;
            text-align: center;
            padding: 8px;
            border-top: 1px solid rgba(255, 255, 255, .06);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 22px 0 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            color: #657B96;
            font-size: 13px;
        }
        .footer-bottom .footer-authority {
            color: #8B9CB5;
        }
        .footer-bottom a {
            color: #8B9CB5;
        }
        .footer-bottom a:hover {
            color: #35D0FF;
        }

        /* ---------- responsive ---------- */
        @media (max-width: 1023px) {
            .nav-links {
                position: absolute;
                top: calc(100% + 10px);
                left: 16px;
                right: 16px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                background: rgba(8, 16, 31, .96);
                -webkit-backdrop-filter: blur(20px);
                backdrop-filter: blur(20px);
                border: 1px solid rgba(255, 255, 255, .1);
                border-radius: 18px;
                padding: 18px;
                box-shadow: 0 30px 70px rgba(0, 0, 0, .38);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                display: block;
                padding: 13px 12px;
                border-radius: 12px;
                color: #D3DFED;
                font-size: 16px;
            }
            .nav-link:hover {
                background: rgba(255, 255, 255, .05);
                color: #fff;
                padding-left: 14px;
            }
            .nav-link::after {
                display: none;
            }
            .nav-toggler {
                display: inline-flex;
            }
            .related-grid,
            .card-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 767px) {
            .header-inner {
                min-height: 70px;
            }
            .header-cta {
                height: 42px;
                padding: 0 14px;
                font-size: 13px;
                gap: 6px;
            }
            .header-cta .desktop {
                display: none;
            }
            .header-cta span:not(.desktop) {
                display: inline;
            }
            .header-cta svg {
                width: 15px;
                height: 15px;
            }
            .post-topbar {
                padding: 14px 0;
            }
            .breadcrumb-current {
                max-width: 160px;
            }
            .post-btm-guide {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .post-guide-col.right {
                align-items: flex-start;
                text-align: left;
            }
            .related-grid,
            .card-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 34px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .post-actions {
                width: 100%;
                margin-left: 0;
                flex-wrap: wrap;
            }
            .post-action-btn {
                flex: 1;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 8px;
            }
            .brand-site {
                font-size: 10px;
            }
            .brand-mark {
                width: 38px;
                height: 38px;
            }
            .header-cta {
                padding: 0 10px;
            }
            .post-header h1 {
                font-size: 28px;
            }
            .post-header {
                padding-top: 36px;
            }
            .post-related {
                padding: 58px 0 64px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #08101F;
            --bg-navy: #0A1428;
            --bg-panel: #101D38;
            --bg-light: #F5F8FC;
            --ink: #E7EEF7;
            --muted: #8EA3C0;
            --dark-ink: #132033;
            --dark-muted: #5B6B84;
            --border-light: #E5EBF3;
            --accent: #35D0FF;
            --accent-high: #7AE0FF;
            --success: #3DDB85;
            --warning: #FFC75F;
            --danger: #FF6B6B;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-soft: 0 4px 20px rgba(10, 20, 40, 0.04);
            --font-sans: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--ink);
            background: var(--bg-navy);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        select,
        textarea {
            font: inherit;
            color: inherit;
            background: none;
            border: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: clamp(16px, 4vw, 48px);
            padding-right: clamp(16px, 4vw, 48px);
        }

        .section {
            padding: clamp(56px, 8vw, 96px) 0;
        }

        .section-light {
            background: var(--bg-light);
            color: var(--dark-ink);
        }

        .section-light .section-sub,
        .section-light .muted-text {
            color: var(--dark-muted);
        }

        .section-dark {
            background: linear-gradient(160deg, #0A1428 0%, #101D38 100%);
        }

        .section-title {
            font-size: clamp(28px, 3.6vw, 38px);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.22;
        }

        .section-sub {
            margin-top: 12px;
            max-width: 760px;
            color: var(--muted);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            background: rgba(53, 208, 255, 0.1);
            border: 1px solid rgba(53, 208, 255, 0.35);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .03em;
        }

        .section-light .eyebrow {
            background: rgba(53, 208, 255, 0.12);
            color: #087D9E;
        }

        .gradient-text {
            background: linear-gradient(90deg, #FFFFFF 0%, #B6E6FF 50%, #35D0FF 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .section-light .gradient-text {
            background: linear-gradient(120deg, #0A1428, #0E6E9E);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .text-gradient-light {
            background: linear-gradient(120deg, #E0F2FE, #B6E6FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-md);
            padding: 13px 24px;
            font-weight: 700;
            font-size: 15px;
            line-height: 1.2;
            min-height: 44px;
            transition: all .2s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #35D0FF, #7AE0FF);
            color: #03121F;
            border: 1px solid rgba(53, 208, 255, 0.6);
            box-shadow: 0 0 24px rgba(53, 208, 255, 0.35);
        }

        .btn-primary:hover {
            box-shadow: 0 0 36px rgba(53, 208, 255, 0.55);
            filter: brightness(1.05);
            color: #03121F;
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 20px rgba(53, 208, 255, 0.4);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.18);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .section-light .btn-secondary {
            background: #FFFFFF;
            color: var(--dark-ink);
            border: 1px solid #D8E2EE;
            box-shadow: var(--shadow-soft);
        }

        .section-light .btn-secondary:hover {
            border-color: #B4C7DC;
            background: #FBFDFF;
            color: var(--dark-ink);
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(13, 27, 48, 0.2);
            color: var(--dark-ink);
        }

        .btn-ghost:hover {
            border-color: rgba(53, 208, 255, 0.7);
            color: #087D9E;
            background: rgba(53, 208, 255, 0.06);
        }

        .section-light .btn-ghost {
            color: var(--dark-ink);
            border-color: #CBD9E9;
        }

        .section-light .btn-ghost:hover {
            color: #087D9E;
            border-color: #35D0FF;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(10, 20, 40, 0.72);
            backdrop-filter: blur(14px) saturate(150%);
            -webkit-backdrop-filter: blur(14px) saturate(150%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 76px;
            padding-top: 8px;
            padding-bottom: 8px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #35D0FF, #6FD6FF);
            color: #08101F;
            flex-shrink: 0;
        }

        .brand-name {
            display: block;
            font-size: 17px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: #FFFFFF;
        }

        .brand-site {
            display: block;
            font-size: 12px;
            color: #8EA3C0;
            line-height: 1.2;
            letter-spacing: .02em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: clamp(14px, 2vw, 28px);
            margin-left: auto;
            margin-right: auto;
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: #B7C7DC;
            padding: 8px 2px;
            transition: color .2s ease;
            white-space: nowrap;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #35D0FF, #7AE0FF);
            transition: width .25s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: #FFFFFF;
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #35D0FF, #7AE0FF);
            color: #03121F;
            font-weight: 700;
            font-size: 14px;
            line-height: 1;
            padding: 11px 18px;
            min-height: 44px;
            box-shadow: 0 0 20px rgba(53, 208, 255, 0.25);
            transition: all .2s ease;
        }

        .header-cta:hover {
            background: linear-gradient(135deg, #45D8FF, #8DE4FF);
            box-shadow: 0 0 28px rgba(53, 208, 255, 0.45);
            color: #03121F;
            transform: translateY(-1px);
        }

        .header-cta:active {
            transform: translateY(0);
        }

        .header-cta svg {
            width: 18px;
            height: 18px;
        }

        .header-cta .desktop {
            display: inline;
        }

        .header-cta span:not(.desktop) {
            display: none;
        }

        .nav-toggler {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.14);
            position: relative;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-toggler span,
        .nav-toggler span::before,
        .nav-toggler span::after {
            content: "";
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: #fff;
            position: relative;
            transition: transform .28s ease, opacity .28s ease;
        }

        .nav-toggler span::before {
            position: absolute;
            top: -7px;
        }

        .nav-toggler span::after {
            position: absolute;
            top: 7px;
        }

        .site-header.nav-open .nav-toggler span {
            background: transparent;
        }

        .site-header.nav-open .nav-toggler span::before {
            transform: rotate(45deg);
            top: 0;
        }

        .site-header.nav-open .nav-toggler span::after {
            transform: rotate(-45deg);
            top: 0;
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--bg-deep);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: #8EA3C0;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: #B7C7DC;
            transition: color .2s ease;
        }

        .breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb .crumb-current {
            color: #FFFFFF;
            font-weight: 600;
        }

        .crumb-sep {
            color: #53667F;
            font-weight: 500;
        }

        /* Page header */
        .page-hero {
            position: relative;
            padding: clamp(44px, 7vw, 84px) 0 clamp(40px, 6vw, 72px);
            overflow: hidden;
            background:
                radial-gradient(circle at 78% 20%, rgba(53, 208, 255, 0.14), transparent 440px),
                radial-gradient(circle at 12% 88%, rgba(53, 208, 255, 0.08), transparent 400px),
                linear-gradient(145deg, #101D38 0%, #08101F 70%);
        }

        .page-hero-inner {
            position: relative;
            z-index: 2;
            max-width: 1060px;
        }

        .page-hero .eyebrow {
            background: rgba(53, 208, 255, 0.12);
            border-color: rgba(53, 208, 255, 0.3);
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: clamp(36px, 5.6vw, 56px);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.18;
            color: #FFFFFF;
            margin-top: 18px;
        }

        .page-hero-desc {
            margin-top: 16px;
            font-size: clamp(15px, 1.6vw, 18px);
            line-height: 1.8;
            color: #B7C7DC;
            max-width: 720px;
        }

        .page-hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 28px;
        }

        .page-hero-safe {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #7B91B0;
            font-size: 13px;
            margin-top: 28px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-pill);
            padding: 8px 14px;
            background: rgba(255, 255, 255, 0.04);
        }

        /* trust strip */
        .trust-strip {
            background: rgba(255, 255, 255, 0.04);
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            padding: 16px 0;
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #C6D5E8;
            font-size: 14px;
        }

        .trust-item svg {
            width: 20px;
            height: 20px;
            color: var(--accent);
            flex-shrink: 0;
        }

        /* Feature / media block */
        .feature-card {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            align-items: stretch;
            overflow: hidden;
            border-radius: 20px;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            box-shadow: 0 12px 40px rgba(10, 20, 40, 0.08);
        }

        .feature-media {
            position: relative;
            min-height: 280px;
        }

        .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .feature-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(8, 16, 31, 0.45), transparent 60%);
        }

        .feature-content {
            padding: clamp(24px, 4vw, 44px);
        }

        .entry-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 24px;
        }

        .entry-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 22px;
            box-shadow: var(--shadow-soft);
            transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
        }

        .entry-card:hover {
            transform: translateY(-4px);
            border-color: rgba(53, 208, 255, 0.6);
            box-shadow: 0 12px 30px rgba(10, 20, 40, 0.12);
        }

        .entry-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(53, 208, 255, 0.18), rgba(53, 208, 255, 0.08));
            color: #087D9E;
            margin-bottom: 16px;
        }

        .entry-icon svg {
            width: 22px;
            height: 22px;
        }

        .entry-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark-ink);
            margin-bottom: 10px;
        }

        .entry-card p {
            color: var(--dark-muted);
            font-size: 14px;
            line-height: 1.75;
        }

        .entry-order {
            display: block;
            font-family: "Inter", "SFMono-Regular", monospace;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .08em;
            color: #B6C6DB;
            margin-bottom: 14px;
        }

        /* Checklist */
        .checklist-wrap {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 36px;
            align-items: center;
        }

        .checklist-intro h2 {
            color: #fff;
        }

        .checklist-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .checklist-card {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 14px;
            padding: 16px 18px;
            transition: background-color .2s ease, border-color .2s ease;
        }

        .checklist-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(53, 208, 255, 0.35);
        }

        .checkmark {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(61, 219, 133, 0.16);
            color: var(--success);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .checkmark svg {
            width: 14px;
            height: 14px;
        }

        .checklist-card h3 {
            color: #EAF2FF;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .checklist-card p {
            color: #94A7C2;
            font-size: 14px;
        }

        /* login process */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 36px;
        }

        .process-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-soft);
            position: relative;
        }

        .process-num {
            display: block;
            font-family: "Inter", "SFMono-Regular", monospace;
            font-size: 12px;
            font-weight: 700;
            color: #9AB4D0;
            letter-spacing: .12em;
            margin-bottom: 18px;
        }

        .process-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark-ink);
            margin-bottom: 12px;
        }

        .process-card p {
            color: var(--dark-muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .process-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 30px;
            right: 30px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, transparent, rgba(53, 208, 255, 0.5), transparent);
        }

        /* problems */
        .problems-list {
            display: grid;
            gap: 14px;
            margin-top: 28px;
        }

        .problem-row {
            display: grid;
            grid-template-columns: 180px 1fr;
            gap: 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            padding: 20px 22px;
        }

        .problem-title {
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .problem-title svg {
            width: 18px;
            height: 18px;
            color: var(--accent);
            flex-shrink: 0;
        }

        .problem-desc {
            color: #A6B7D0;
            font-size: 14px;
        }

        /* security cards */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .security-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-soft);
        }

        .security-card svg {
            width: 24px;
            height: 24px;
            color: #087D9E;
            margin-bottom: 14px;
        }

        .security-card h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark-ink);
            margin-bottom: 8px;
        }

        .security-card p {
            font-size: 13px;
            color: var(--dark-muted);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-panel {
            display: grid;
            gap: 12px;
            max-width: 920px;
            margin: 40px auto 0;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color .2s ease;
        }

        .faq-item.active {
            border-color: rgba(53, 208, 255, 0.5);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            text-align: left;
            color: #EAF2FF;
            font-size: 16px;
            font-weight: 600;
            background: transparent;
            transition: color .2s ease;
        }

        .faq-question:hover {
            color: #FFFFFF;
        }

        .faq-item.active .faq-question {
            color: #FFFFFF;
        }

        .faq-icon {
            width: 26px;
            height: 26px;
            flex-shrink: 0;
        }

        .faq-icon svg {
            width: 100%;
            height: 100%;
            transition: transform .25s ease;
            color: #8EA3C0;
        }

        .faq-item.active .faq-icon svg {
            transform: rotate(45deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 15px;
            line-height: 1.85;
            color: #A9BBD4;
        }

        /* cta card */
        .cta-card-wrap {
            padding: clamp(48px, 6vw, 80px) 0;
            background: var(--bg-light);
        }

        .cta-card {
            max-width: 860px;
            margin: 0 auto;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: 22px;
            padding: clamp(24px, 4vw, 44px) clamp(20px, 5vw, 64px);
            text-align: center;
            box-shadow: 0 10px 40px rgba(10, 20, 40, 0.08);
            position: relative;
            overflow: hidden;
        }

        .cta-card::after {
            content: "";
            position: absolute;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(53, 208, 255, 0.12);
            filter: blur(60px);
            top: -100px;
            right: -80px;
            pointer-events: none;
        }

        .cta-card h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
            color: var(--dark-ink);
            letter-spacing: -0.02em;
            line-height: 1.3;
            position: relative;
            z-index: 1;
        }

        .cta-card p {
            color: var(--dark-muted);
            max-width: 640px;
            margin: 16px auto 24px;
            font-size: 15px;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            position: relative;
            z-index: 1;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-deep);
            color: #A6B7D0;
            padding: 56px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-main {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
        }

        .footer-brand .brand-name {
            color: #FFFFFF;
        }

        .footer-brand .brand-site {
            color: #7088A8;
        }

        .footer-desc {
            margin-top: 18px;
            font-size: 14px;
            line-height: 1.85;
            color: #7C90AB;
            max-width: 320px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #EAF2FF;
            margin-bottom: 14px;
        }

        .footer-links li,
        .footer-contact li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: #8CA2BD;
            transition: color .2s ease;
        }

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

        .footer-contact {
            display: grid;
            gap: 12px;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 13px;
            line-height: 1.6;
            color: #8CA2BD;
        }

        .footer-contact svg {
            width: 17px;
            height: 17px;
            color: #35D0FF;
            flex-shrink: 0;
            margin-top: 4px;
        }

        .footer-figure {
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.04);
            max-width: 200px;
        }

        .footer-figure img {
            width: 100%;
            height: 120px;
            object-fit: cover;
        }

        .footer-figure figcaption {
            padding: 8px 12px;
            font-size: 12px;
            color: #7C90AB;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 0;
            font-size: 13px;
            color: #60778F;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }

        /* collapse */
        .clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* responsive */
        @media (max-width: 1080px) {
            .nav-links {
                gap: 16px;
            }

            .checklist-wrap {
                grid-template-columns: 1fr;
            }

            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-main {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 900px) {
            .entry-list-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .feature-card {
                grid-template-columns: 1fr;
            }

            .feature-media {
                min-height: 220px;
                order: 1;
            }

            .feature-media::after {
                background: linear-gradient(180deg, rgba(8, 16, 31, 0.2), transparent 55%);
            }

            .feature-content {
                order: 2;
            }

            .problem-row {
                grid-template-columns: 1fr;
                gap: 4px;
            }

            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .process-grid {
                grid-template-columns: 1fr;
            }

            .nav-links {
                gap: 20px;
            }

            .footer-main {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .page-hero-safe {
                align-items: flex-start;
            }
        }

        @media (max-width: 639px) {
            .entry-list-grid {
                grid-template-columns: 1fr;
            }

            .security-grid {
                grid-template-columns: 1fr;
            }

            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .header-cta .desktop {
                display: none;
            }

            .header-cta span:not(.desktop) {
                display: inline;
            }
        }

        @media (max-width: 1023px) {
            .nav-links {
                position: fixed;
                inset: 0;
                z-index: 70;
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 28px;
                background: rgba(8, 16, 31, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                opacity: 0;
                visibility: hidden;
                transition: opacity .25s ease, visibility .25s ease;
            }

            .nav-links .nav-link {
                font-size: 22px;
                font-weight: 600;
            }

            .site-header.nav-open .nav-links {
                opacity: 1;
                visibility: visible;
            }

            .nav-toggler {
                display: inline-flex;
            }

            .site-header.nav-open {
                background: transparent;
                border-bottom-color: transparent;
            }

            .header-cta {
                padding: 10px 14px;
            }

            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .brand-site {
                font-size: 11px;
            }

            .brand-mark {
                width: 34px;
                height: 34px;
                border-radius: 10px;
            }

            .page-hero-buttons .btn,
            .cta-buttons .btn {
                width: 100%;
            }
        }

        @media (min-width: 1024px) {
            .nav-links .nav-link.desktop-link-article {
                margin-right: 0;
            }
        }

        :focus-visible {
            outline: 2px solid rgba(53, 208, 255, 0.8);
            outline-offset: 3px;
        }

        .section-light a:not(.btn) {
            transition: color .2s ease;
        }

        .section-light a:not(.btn):hover {
            color: #087D9E;
        }

/* roulang page: category3 */
:root{
    --bg:#08101F;
    --bg-soft:#0A1428;
    --card:#101D38;
    --card-hover:#16264A;
    --accent:#35D0FF;
    --accent-2:#7AE0FF;
    --success:#3DDB85;
    --warning:#FFC75F;
    --error:#FF6B6B;
    --text-head:#F5F8FC;
    --text-body:#C6D2E3;
    --text-muted:#89A0BC;
    --line:rgba(255,255,255,0.09);
    --light-bg:#F5F8FC;
    --light-card:#FFFFFF;
    --light-head:#132033;
    --light-body:#435471;
    --radius-card:16px;
    --radius-input:12px;
  }

  *{box-sizing:border-box;padding:0;margin:0}
  html{scroll-behavior:smooth}
  body{
    background:var(--bg);
    color:var(--text-body);
    font-family:"PingFang SC","Microsoft YaHei","HarmonicOS Sans","Helvetica Neue",Arial,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }

  h1,h2,h3,h4{
    color:var(--text-head);
    line-height:1.3;
    font-weight:800;
  }

  p{word-break:break-word}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  button,input,select,textarea{font-family:inherit}
  ul{list-style:none}

  .container{
    max-width:1280px;
    margin:0 auto;
    padding-left:clamp(16px,4vw,48px);
    padding-right:clamp(16px,4vw,48px);
  }

  .section{
    padding:clamp(64px,9vw,112px) 0;
    position:relative;
  }

  .section-head{
    max-width:920px;
    margin-bottom:46px;
  }

  .section-kicker{
    display:inline-flex;
    align-items:center;
    gap:10px;
    color:var(--accent);
    font-size:14px;
    font-weight:700;
    letter-spacing:.12em;
    text-transform:uppercase;
    margin-bottom:16px;
  }

  .section-kicker::before{
    content:"";
    width:26px;
    height:2px;
    border-radius:99px;
    background:linear-gradient(90deg,var(--accent),transparent);
  }

  .section-title{
    font-size:clamp(28px,4.2vw,40px);
    letter-spacing:-.02em;
    margin-bottom:16px;
  }

  .section-desc{
    font-size:17px;
    color:var(--text-muted);
    max-width:760px;
  }

  .section-light{
    background:var(--light-bg);
  }

  .section-light .section-title{
    color:var(--light-head);
  }

  .section-light .section-desc{
    color:var(--light-body);
  }

  .section-light .section-kicker{
    color:#068CB8;
  }

  .site-header{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    z-index:100;
    transition:background .35s ease,border-color .35s ease,box-shadow .35s ease;
    background:rgba(6,12,24,.42);
    backdrop-filter:blur(14px) saturate(150%);
    -webkit-backdrop-filter:blur(14px) saturate(150%);
    border-bottom:1px solid rgba(255,255,255,.06);
  }

  .site-header.scrolled{
    background:rgba(8,16,31,.9);
    border-color:rgba(255,255,255,.08);
    box-shadow:0 12px 30px rgba(0,0,0,.22);
  }

  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    min-height:76px;
  }

  .brand{
    display:inline-flex;
    align-items:center;
    gap:12px;
    flex:0 0 auto;
  }

  .brand-mark{
    width:42px;
    height:42px;
    border-radius:14px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    background:linear-gradient(145deg,#12264a,#0d1c3a);
    border:1px solid rgba(53,208,255,.42);
    box-shadow:0 0 18px rgba(53,208,255,.22);
  }

  .brand-mark svg{
    width:22px;
    height:22px;
  }

  .brand-name{
    display:block;
    color:#fff;
    font-weight:800;
    font-size:19px;
    letter-spacing:-.01em;
    line-height:1.2;
  }

  .brand-site{
    display:block;
    color:var(--text-muted);
    font-size:12px;
    line-height:1.4;
  }

  .nav-links{
    display:flex;
    align-items:center;
    gap:clamp(16px,2.4vw,32px);
  }

  .nav-link{
    position:relative;
    color:#DDE7F3;
    font-size:15px;
    font-weight:500;
    padding:10px 2px;
    transition:color .22s ease;
    white-space:nowrap;
  }

  .nav-link::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    width:100%;
    height:2px;
    border-radius:99px;
    background:linear-gradient(90deg,var(--accent),var(--accent-2));
    opacity:0;
    transform:scaleX(.5);
    transform-origin:left center;
    transition:opacity .22s ease,transform .22s ease;
  }

  .nav-link:hover,.nav-link.active{
    color:#fff;
  }

  .nav-link.active::after,.nav-link:hover::after{
    opacity:1;
    transform:scaleX(1);
  }

  .nav-tools{
    display:flex;
    align-items:center;
    gap:12px;
  }

  .header-cta{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:46px;
    padding:0 20px;
    border-radius:12px;
    background:linear-gradient(135deg,var(--accent),var(--accent-2));
    color:#03121f;
    font-size:14px;
    font-weight:800;
    box-shadow:0 0 22px rgba(53,208,255,.3);
    transition:box-shadow .25s ease,transform .2s ease,filter .25s ease;
    white-space:nowrap;
  }

  .header-cta svg{
    width:17px;
    height:17px;
  }

  .header-cta:hover{
    box-shadow:0 0 34px rgba(53,208,255,.55);
    filter:brightness(1.08);
    transform:translateY(-1px);
  }

  .header-cta:active{
    transform:translateY(1px);
  }

  .header-cta .desktop{
    display:inline;
  }

  .nav-toggler{
    display:none;
    width:44px;
    height:44px;
    align-items:center;
    justify-content:center;
    border:none;
    background:rgba(255,255,255,.08);
    border-radius:12px;
    cursor:pointer;
    transition:background .2s ease;
  }

  .nav-toggler:hover{
    background:rgba(255,255,255,.16);
  }

  .nav-toggler span,
  .nav-toggler span::before,
  .nav-toggler span::after{
    content:"";
    display:block;
    width:22px;
    height:2px;
    background:#fff;
    border-radius:99px;
    transition:transform .25s ease,opacity .2s ease;
  }

  .nav-toggler span::before{
    transform:translateY(-7px);
  }

  .nav-toggler span::after{
    transform:translateY(5px);
  }

  .nav-toggler.open span{
    background:transparent;
  }

  .nav-toggler.open span::before{
    transform:rotate(45deg) translateY(0);
  }

  .nav-toggler.open span::after{
    transform:rotate(-45deg) translateY(0);
  }

  .crumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    color:var(--light-body);
    flex-wrap:wrap;
  }

  .crumb a{
    color:var(--light-body);
    transition:color .2s ease;
  }

  .crumb a:hover{
    color:#068CB8;
  }

  .crumb svg{
    width:16px;
    height:16px;
    flex:0 0 auto;
    stroke:currentColor;
  }

  .crumb span{
    color:var(--light-head);
    font-weight:600;
  }

  .page-head{
    background:
      radial-gradient(circle at 88% 8%,rgba(53,208,255,.12),transparent 26%),
      linear-gradient(180deg,#F8FBFE,#EDF3F9);
    color:var(--light-body);
    padding:clamp(110px,14vw,150px) 0 54px;
    border-bottom:1px solid #E5EBF3;
  }

  .page-head .crumb{
    margin-bottom:28px;
  }

  .page-head-grid{
    display:grid;
    grid-template-columns:minmax(0,1.5fr) minmax(300px,.7fr);
    gap:44px;
    align-items:end;
  }

  .head-chip{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:6px 14px;
    border-radius:999px;
    font-size:13px;
    font-weight:700;
    color:#0583B5;
    background:rgba(53,208,255,.14);
    border:1px solid rgba(53,208,255,.24);
    margin-bottom:18px;
  }

  .head-chip svg{
    width:15px;
    height:15px;
  }

  .page-head h1{
    font-size:clamp(32px,5vw,48px);
    letter-spacing:-.02em;
    color:var(--light-head);
    margin-bottom:18px;
  }

  .page-head h1 .gradient-deep{
    background:linear-gradient(120deg,#043f66,#00a5d8);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }

  .head-summary{
    font-size:17px;
    max-width:820px;
    line-height:1.8;
  }

  .head-meta-card{
    background:#fff;
    border:1px solid #E3EAF3;
    border-radius:18px;
    padding:22px 24px;
    box-shadow:0 14px 40px rgba(10,20,40,.06);
  }

  .head-meta-title{
    display:flex;
    align-items:center;
    gap:9px;
    font-weight:700;
    font-size:15px;
    color:var(--light-head);
    margin-bottom:10px;
  }

  .head-meta-title svg{
    width:17px;
    height:17px;
    color:#00a5d8;
  }

  .head-meta-card p{
    font-size:14px;
    color:var(--light-body);
    line-height:1.7;
  }

  .official-tip{
    display:flex;
    align-items:flex-start;
    gap:12px;
    margin-top:30px;
    padding:14px 18px;
    border-radius:14px;
    background:#fff;
    border:1px solid rgba(255,199,95,.4);
    box-shadow:0 6px 16px rgba(10,20,40,.04);
  }

  .official-tip svg{
    width:20px;
    height:20px;
    color:#D99A28;
    flex:0 0 auto;
    margin-top:4px;
  }

  .official-tip p{
    font-size:14px;
    color:#4F4A38;
  }

  .feature-section{
    position:relative;
    overflow:hidden;
  }

  .feature-section::before{
    content:"";
    position:absolute;
    width:760px;
    height:760px;
    left:-380px;
    top:-220px;
    background:radial-gradient(circle,rgba(53,208,255,.1),transparent 60%);
    pointer-events:none;
  }

  .feature-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);
    gap:clamp(38px,6vw,92px);
    align-items:center;
  }

  .feature-intro .section-title{
    margin-bottom:20px;
  }

  .feature-intro p{
    color:var(--text-muted);
    margin-bottom:26px;
  }

  .btn-group{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
  }

  .btn-primary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 24px;
    border-radius:12px;
    border:none;
    background:linear-gradient(135deg,var(--accent),var(--accent-2));
    color:#03121f;
    font-weight:800;
    font-size:15px;
    cursor:pointer;
    box-shadow:0 0 24px rgba(53,208,255,.3);
    transition:box-shadow .25s ease,transform .2s ease,filter .25s ease;
    white-space:nowrap;
  }

  .btn-primary:hover{
    box-shadow:0 0 36px rgba(53,208,255,.56);
    filter:brightness(1.08);
    transform:translateY(-2px);
  }

  .btn-primary:active{
    transform:translateY(1px) scale(.99);
    box-shadow:0 0 20px rgba(53,208,255,.32);
  }

  .btn-light{
    background:linear-gradient(135deg,#0C6E9E,#0EA5D5);
    color:#fff;
    box-shadow:0 8px 24px rgba(7,120,170,.22);
  }

  .btn-light:hover{
    box-shadow:0 8px 30px rgba(7,120,170,.34);
  }

  .btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 24px;
    border-radius:12px;
    background:rgba(255,255,255,.06);
    color:#fff;
    font-weight:700;
    font-size:15px;
    border:1px solid rgba(255,255,255,.2);
    cursor:pointer;
    transition:background .2s ease,border-color .2s ease,transform .2s ease;
    white-space:nowrap;
  }

  .btn-ghost:hover{
    background:rgba(255,255,255,.15);
    border-color:rgba(255,255,255,.35);
    transform:translateY(-1px);
  }

  .btn-ghost.light{
    background:#fff;
    color:#0a6c97;
    border:1px solid #CFE6F2;
    box-shadow:0 4px 14px rgba(10,20,40,.04);
  }

  .btn-ghost.light:hover{
    background:#E5F4FB;
    border-color:#9ED0E8;
  }

  .feature-list{
    display:grid;
    gap:14px;
  }

  .feature-item{
    display:grid;
    grid-template-columns:44px 1fr;
    gap:18px;
    padding:22px 22px;
    background:linear-gradient(145deg,rgba(255,255,255,.055),rgba(255,255,255,.025));
    border:1px solid var(--line);
    border-radius:18px;
    backdrop-filter:blur(12px);
    transition:border-color .22s ease,background .22s ease,transform .22s ease;
  }

  .feature-item:hover{
    border-color:rgba(53,208,255,.36);
    background:linear-gradient(145deg,rgba(255,255,255,.08),rgba(255,255,255,.03));
    transform:translateY(-2px);
  }

  .feature-num{
    width:44px;
    height:44px;
    border-radius:13px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:15px;
    font-weight:800;
    letter-spacing:.01em;
    color:#B7F0FF;
    background:rgba(53,208,255,.12);
    border:1px solid rgba(53,208,255,.18);
  }

  .feature-content h3{
    font-size:18px;
    margin-bottom:7px;
  }

  .feature-content p{
    font-size:15px;
    color:var(--text-muted);
    line-height:1.75;
  }

  .compare-section{
    position:relative;
  }

  .compare-section::before{
    content:"";
    position:absolute;
    inset:0;
    background:radial-gradient(circle at 8% 20%,rgba(53,208,255,.06),transparent 24%);
    pointer-events:none;
  }

  .compare-header{
    display:flex;
    flex-direction:column;
    gap:10px;
    margin-bottom:40px;
  }

  .table-wrap{
    overflow-x:auto;
    background:var(--light-card);
    border:1px solid #E1E9F3;
    border-radius:22px;
    box-shadow:0 18px 46px rgba(10,20,40,.07);
    position:relative;
  }

  table{
    width:100%;
    min-width:780px;
    border-collapse:collapse;
    font-size:15px;
  }

  table th{
    text-align:left;
    padding:18px 20px;
    background:#F0F5FB;
    color:var(--light-head);
    font-weight:800;
    font-size:14px;
    letter-spacing:.02em;
    border-bottom:1px solid #DCE7F1;
    white-space:nowrap;
  }

  table td{
    padding:20px;
    color:var(--light-body);
    border-bottom:1px solid var(--line);
    line-height:1.7;
    vertical-align:top;
  }

  .table-wrap table tr:last-child td{
    border-bottom:none;
  }

  table tr:nth-child(even) td{
    background:rgba(240,248,255,.5);
  }

  table tbody tr:hover td{
    background:rgba(223,242,255,.6);
  }

  .main-cell{
    min-width:150px;
  }

  .main-cell strong{
    display:block;
    color:var(--light-head);
    font-size:16px;
    margin-bottom:5px;
  }

  .main-cell span{
    font-size:13px;
    color:#7086A1;
    display:block;
    line-height:1.55;
  }

  .badge-method{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-bottom:8px;
    border-radius:999px;
    padding:5px 12px;
    font-size:12px;
    font-weight:700;
    color:#05608E;
    background:rgba(53,208,255,.14);
    border:1px solid rgba(53,208,255,.24);
  }

  .table-note{
    margin-top:18px;
    display:flex;
    align-items:flex-start;
    gap:8px;
    font-size:14px;
    color:var(--light-body);
  }

  .table-note svg{
    width:18px;
    height:18px;
    flex:0 0 auto;
    color:#0EA5D5;
    margin-top:3px;
  }

  .process-section{
    position:relative;
    overflow:hidden;
  }

  .process-section::before{
    content:"";
    position:absolute;
    width:820px;
    height:820px;
    right:-420px;
    bottom:-360px;
    background:radial-gradient(circle,rgba(53,208,255,.09),transparent 60%);
    pointer-events:none;
  }

  .process-list{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    position:relative;
  }

  .process-item{
    background:linear-gradient(150deg,rgba(16,29,56,.9),rgba(9,17,36,.95));
    border:1px solid var(--line);
    border-radius:18px;
    padding:28px 22px;
    position:relative;
    transition:transform .22s ease,border-color .22s ease;
  }

  .process-item::before{
    content:"";
    position:absolute;
    width:1px;
    height:28px;
    left:50%;
    top:-28px;
    background:lineargradient(180deg,transparent,rgba(53,208,255,.25));
    display:none;
  }

  .process-item:hover{
    border-color:rgba(53,208,255,.38);
    transform:translateY(-4px);
  }

  .process-step{
    display:inline-flex;
    align-items:center;
    font-family:"SF Mono",Consolas,"Courier New",monospace;
    font-size:13px;
    font-weight:800;
    color:#B7F0FF;
    background:rgba(53,208,255,.1);
    padding:5px 12px;
    border-radius:999px;
    border:1px solid rgba(53,208,255,.2);
    margin-bottom:14px;
  }

  .process-icon{
    width:46px;
    height:46px;
    border-radius:14px;
    background:linear-gradient(150deg,rgba(53,208,255,.18),rgba(53,208,255,.02));
    border:1px solid rgba(53,208,255,.2);
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--accent-2);
    margin-bottom:16px;
  }

  .process-icon svg{
    width:22px;
    height:22px;
  }

  .process-item h3{
    font-size:18px;
    margin-bottom:8px;
  }

  .process-item p{
    font-size:14px;
    color:var(--text-muted);
    line-height:1.75;
  }

  .scene-section{
    position:relative;
  }

  .scene-grid{
    display:grid;
    grid-template-columns:repeat(12,1fr);
    gap:26px;
    align-items:stretch;
  }

  .scene-card{
    background:#fff;
    border:1px solid #E2EAF3;
    border-radius:20px;
    overflow:hidden;
    box-shadow:0 12px 28px rgba(10,20,40,.05);
    transition:transform .22s ease,box-shadow .22s ease;
  }

  .scene-card:hover{
    transform:translateY(-4px);
    box-shadow:0 16px 34px rgba(10,20,40,.1);
  }

  .scene-img{
    overflow:hidden;
    position:relative;
  }

  .scene-img img{
    width:100%;
    height:100%;
    object-fit:cover;
  }

  .scene-img::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,rgba(10,20,40,.02),rgba(10,20,40,.05));
    pointer-events:none;
  }

  .scene-1{
    grid-column:span 7;
  }

  .scene-2{
    grid-column:span 5;
  }

  .scene-3{
    grid-column:span 12;
  }

  .scene-1 .scene-img{
    aspect-ratio:16/9;
  }

  .scene-2 .scene-img{
    aspect-ratio:1.45/1;
  }

  .scene-3 .scene-inner{
    display:grid;
    grid-template-columns:1fr 1.2fr;
  }

  .scene-3 .scene-img{
    height:100%;
    min-height:260px;
  }

  .scene-body{
    padding:24px;
  }

  .scene-label{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13px;
    font-weight:700;
    color:#05618F;
    background:rgba(53,208,255,.13);
    border:1px solid rgba(53,208,255,.22);
    border-radius:999px;
    padding:5px 13px;
    margin-bottom:13px;
  }

  .scene-card h3{
    font-size:19px;
    color:var(--light-head);
    margin-bottom:8px;
  }

  .scene-card p{
    font-size:15px;
    color:var(--light-body);
    line-height:1.75;
  }

  .faq-section{
    position:relative;
    overflow:hidden;
  }

  .faq-section::before{
    content:"";
    position:absolute;
    width:820px;
    height:820px;
    left:-420px;
    bottom:-300px;
    background:radial-gradient(circle,rgba(53,208,255,.08),transparent 62%);
    pointer-events:none;
  }

  .faq-wrap{
    max-width:1020px;
    margin:0 auto;
  }

  .faq-item{
    background:linear-gradient(150deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
    border:1px solid var(--line);
    border-radius:16px;
    margin-bottom:14px;
    overflow:hidden;
    transition:border-color .22s ease,background .22s ease;
  }

  .faq-item.open{
    border-color:rgba(53,208,255,.3);
    background:linear-gradient(150deg,rgba(53,208,255,.09),rgba(255,255,255,.02));
  }

  .faq-question{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    text-align:left;
    padding:20px 22px;
    background:transparent;
    border:none;
    cursor:pointer;
    color:var(--text-head);
    font-size:16px;
    font-weight:700;
    line-height:1.55;
  }

  .faq-icon{
    position:relative;
    width:20px;
    height:20px;
    flex:0 0 auto;
    border-radius:50%;
    background:rgba(53,208,255,.12);
    transition:background .2s ease;
  }

  .faq-icon::before,.faq-icon::after{
    content:"";
    position:absolute;
    top:50%;
    left:50%;
    width:10px;
    height:2px;
    background:var(--accent);
    border-radius:99px;
    transform:translate(-50%,-50%) rotate(90deg);
    transition:transform .28s ease;
  }

  .faq-icon::after{
    transform:translate(-50%,-50%) rotate(0deg);
  }

  .faq-item.open .faq-icon::before{
    transform:translate(-50%,-50%) rotate(0deg);
  }

  .faq-answer{
    max-height:0;
    opacity:0;
    overflow:hidden;
    transition:max-height .32s ease,opacity .28s ease,padding .24s ease;
  }

  .faq-item.open .faq-answer{
    max-height:420px;
    opacity:1;
  }

  .faq-answer p{
    padding:0 24px 20px;
    font-size:15px;
    color:var(--text-body);
    line-height:1.85;
  }

  .cta-section{
    padding:clamp(54px,7vw,90px) 0 90px;
    position:relative;
  }

  .cta-card{
    max-width:960px;
    margin:0 auto;
    position:relative;
    padding:clamp(34px,5vw,58px) clamp(22px,4vw,56px);
    text-align:center;
    background:linear-gradient(150deg,#101F3C,#0A1528);
    border:1px solid rgba(53,208,255,.36);
    border-radius:24px;
    overflow:hidden;
    box-shadow:0 0 34px rgba(53,208,255,.1);
  }

  .cta-card::before{
    content:"";
    position:absolute;
    width:540px;
    height:240px;
    background:radial-gradient(ellipse at center,rgba(53,208,255,.18),transparent 70%);
    top:-150px;
    left:50%;
    transform:translateX(-50%);
    pointer-events:none;
  }

  .cta-card h2{
    font-size:clamp(26px,3.8vw,36px);
    margin-bottom:14px;
  }

  .cta-card p{
    max-width:680px;
    margin:0 auto 30px;
    color:var(--text-muted);
  }

  .cta-btns{
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
    gap:14px;
  }

  .site-footer{
    background:#08101F;
    color:var(--text-muted);
    border-top:1px solid rgba(255,255,255,.06);
    font-size:14px;
  }

  .footer-main{
    padding:60px 0 40px;
  }

  .footer-grid{
    display:grid;
    grid-template-columns:1.35fr 1fr 1fr 1fr;
    gap:40px;
  }

  .footer-brand .brand{
    margin-bottom:14px;
  }

  .footer-brand .brand-name{
    font-size:17px;
  }

  .footer-desc{
    font-size:14px;
    color:var(--text-muted);
    line-height:1.8;
    max-width:340px;
  }

  .footer-title{
    font-size:16px;
    color:var(--text-head);
    font-weight:700;
    margin-bottom:18px;
  }

  .footer-links li,
  .footer-contact li{
    margin-bottom:12px;
  }

  .footer-links a{
    transition:color .2s ease;
  }

  .footer-links a:hover{
    color:var(--accent-2);
  }

  .footer-contact li{
    display:flex;
    align-items:flex-start;
    gap:9px;
    line-height:1.65;
  }

  .footer-contact svg{
    width:17px;
    height:17px;
    flex:0 0 auto;
    margin-top:4px;
  }

  .footer-figure{
    width:112px;
    border-radius:16px;
    overflow:hidden;
    border:1px solid rgba(255,255,255,.14);
    background:#fff;
    padding:4px;
    margin-top:2px;
  }

  .footer-figure img{
    width:100%;
    border-radius:12px;
  }

  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.07);
    padding:22px 0 34px;
  }

  .footer-bottom .copyright{
    color:var(--text-muted);
    font-size:13px;
  }

  .footer-bottom a{
    transition:color .2s ease;
  }

  .footer-bottom a:hover{
    color:var(--accent-2);
  }

  @media (max-width:1180px){
    .footer-grid{
      grid-template-columns:1.3fr 1fr 1fr;
    }
    .footer-grid > div:last-child{
      display:none;
    }
  }

  @media (max-width:1023px){
    .nav-links{
      position:fixed;
      top:0;
      right:0;
      width:100%;
      height:100dvh;
      flex-direction:column;
      justify-content:center;
      gap:10px;
      background:rgba(5,10,21,.98);
      backdrop-filter:blur(10px);
      opacity:0;
      visibility:hidden;
      transform:translateY(12px);
      transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
      z-index:10;
    }

    .site-header.nav-open .nav-links{
      opacity:1;
      visibility:visible;
      transform:translateY(0);
    }

    .nav-toggler{
      display:flex;
      position:relative;
      z-index:20;
    }

    .header-cta{
      position:relative;
      z-index:20;
    }

    .nav-links .nav-link{
      font-size:20px;
      font-weight:700;
      padding:10px 14px;
    }

    .header-cta .desktop{
      display:none;
    }

    .header-cta{
      padding:0 14px;
    }

    .feature-layout{
      grid-template-columns:1fr;
      gap:36px;
    }

    .page-head-grid{
      grid-template-columns:1fr;
      gap:26px;
    }

    .process-list{
      grid-template-columns:repeat(2,1fr);
      gap:18px;
    }

    .scene-1,.scene-2{
      grid-column:span 12;
    }

    .scene-3 .scene-inner{
      grid-template-columns:1fr;
    }

    .footer-grid{
      grid-template-columns:1fr 1fr;
    }
  }

  @media (max-width:560px){
    .header-inner{
      min-height:66px;
    }

    .brand-mark{
      width:36px;
      height:36px;
      border-radius:11px;
    }

    .brand-name{
      font-size:16px;
    }

    .brand-site{
      font-size:11px;
    }

    .header-cta{
      height:40px;
      border-radius:11px;
      font-size:13px;
      padding:0 11px;
    }

    .nav-toggler{
      width:40px;
      height:40px;
    }

    .page-head{
      padding-top:96px;
    }

    .page-head h1{
      font-size:31px;
    }

    .feature-item{
      grid-template-columns:1fr;
      gap:10px;
    }

    .process-list{
      grid-template-columns:1fr;
    }

    .table-wrap{
      border-radius:14px;
    }

    .cta-btns .btn-primary,
    .cta-btns .btn-ghost{
      width:100%;
    }

    .footer-grid{
      grid-template-columns:1fr;
      gap:32px;
    }

    .footer-main{
      padding:44px 0 28px;
    }
  }