/* roulang page: index */
:root{
  --bg-deep:#08121d;
  --bg-main:#0d1b2c;
  --bg-soft:#11263a;
  --card-bg:rgba(255,255,255,.045);
  --card-bg-hover:rgba(255,255,255,.085);
  --card-border:rgba(255,255,255,.09);
  --accent:#39d0d8;
  --accent-bright:#6ee7f0;
  --accent-dim:rgba(57,208,216,.22);
  --amber:#ffb347;
  --amber-soft:rgba(255,179,71,.14);
  --text:rgba(255,255,255,.93);
  --text-dim:rgba(255,255,255,.62);
  --text-faint:rgba(255,255,255,.42);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-xs:8px;
  --radius-btn:999px;
  --shadow-card:0 10px 40px rgba(0,0,0,.28);
  --shadow-glow:0 0 0 1px rgba(57,208,216,.28),0 6px 28px rgba(57,208,216,.20);
  --font:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --container-w:1200px;
  --ease:cubic-bezier(.25,.6,.3,1);
  --transition:.25s var(--ease);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg-main);
  background-image:radial-gradient(1200px 800px at 80% -10%,rgba(57,208,216,.10),transparent 60%),radial-gradient(800px 500px at 0% 20%,rgba(57,208,216,.05),transparent 50%);
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--accent-bright)}
img{max-width:100%;display:block}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit}
a:focus-visible,button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:4px;
}
.container{max-width:var(--container-w);margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:44px;gap:20px}
.section-head h2{
  font-size:28px;
  font-weight:700;
  line-height:1.3;
  color:#fff;
  position:relative;
  padding-bottom:14px;
  letter-spacing:.5px;
}
.section-head h2::after{
  content:'';
  position:absolute;
  left:0;bottom:0;
  width:36px;height:3px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--accent),rgba(57,208,216,.05));
}
.section-note{font-size:13px;color:var(--text-faint);white-space:nowrap}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--radius-xs);
  background:var(--card-bg);
  border:1px solid var(--card-border);
  font-size:12px;
  color:var(--text-dim);
  line-height:1.4;
  white-space:nowrap;
  transition:all var(--transition);
}
.tag .dot{
  width:5px;height:5px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 6px rgba(57,208,216,.6);
}
.tag:hover{color:var(--accent-bright);border-color:rgba(57,208,216,.25)}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 30px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  transition:all var(--transition);
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent);
  color:#06121b;
  box-shadow:0 0 0 1px rgba(57,208,216,.3),0 4px 24px rgba(57,208,216,.25);
}
.btn-primary:hover{
  background:var(--accent-bright);
  color:#06121b;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(110,231,240,.42),0 8px 32px rgba(57,208,216,.35);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 0 1px rgba(57,208,216,.3),0 2px 12px rgba(57,208,216,.2);
}
.btn-secondary{
  background:rgba(255,255,255,.06);
  color:var(--text);
  border-color:rgba(255,255,255,.14);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.btn-secondary:hover{
  background:rgba(255,255,255,.10);
  border-color:rgba(57,208,216,.4);
  color:var(--accent-bright);
  transform:translateY(-2px);
}
.btn-secondary:active{transform:translateY(0)}
.btn-ghost{
  color:var(--text-dim);
  padding:8px 0;
  font-size:14px;
  border-radius:0;
}
.btn-ghost:hover{color:var(--accent-bright)}
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  height:64px;
  display:flex;
  align-items:center;
  background:transparent;
  transition:background .35s ease,box-shadow .35s ease,backdrop-filter .35s ease;
}
.site-header.scrolled{
  background:rgba(8,18,29,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);
  box-shadow:0 8px 30px rgba(0,0,0,.25);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  width:36px;height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--accent),#1e9aa5);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  color:#06121b;
  letter-spacing:-.5px;
  box-shadow:0 0 18px rgba(57,208,216,.35);
  flex-shrink:0;
}
.brand-text{
  font-size:18px;
  font-weight:700;
  color:#fff;
  white-space:nowrap;
  letter-spacing:.5px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:24px;
}
.nav-link{
  position:relative;
  padding:8px 16px;
  font-size:15px;
  color:var(--text-dim);
  border-radius:var(--radius-btn);
  transition:all var(--transition);
  font-weight:500;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-link.active{
  color:var(--accent-bright);
  font-weight:600;
}
.nav-link.active::after{
  content:'';
  position:absolute;
  left:16px;right:16px;bottom:2px;
  height:2px;
  border-radius:1px;
  background:var(--accent);
  box-shadow:0 0 8px rgba(57,208,216,.6);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-cta{
  padding:9px 22px;
  font-size:14px;
}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--card-border);
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:#fff;
  border-radius:2px;
  transition:all .3s var(--ease);
}
.nav-toggle.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.hero{
  position:relative;
  min-height:92vh;
  display:flex;
  align-items:center;
  padding:150px 0 90px;
  background:linear-gradient(135deg,var(--bg-deep) 0%,var(--bg-main) 45%,#0e2033 100%);
  overflow:hidden;
}
.hero::before{
  content:'';
  position:absolute;
  top:-40%;right:-10%;
  width:620px;height:620px;
  background:radial-gradient(circle,rgba(57,208,216,.12) 0%,transparent 62%);
  pointer-events:none;
}
.hero::after{
  content:'';
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.07;
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:55fr 45fr;
  gap:60px;
  align-items:center;
  position:relative;
  z-index:1;
}
.hero-content{max-width:560px}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 16px;
  border-radius:var(--radius-btn);
  background:var(--accent-dim);
  border:1px solid rgba(57,208,216,.25);
  font-size:13px;
  font-weight:600;
  color:var(--accent-bright);
  margin-bottom:22px;
  letter-spacing:1px;
}
.hero-badge .pulse-dot{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--accent);
  animation:pulse 2s infinite;
}
.hero h1{
  font-size:clamp(30px,4.6vw,46px);
  font-weight:700;
  line-height:1.22;
  color:#fff;
  letter-spacing:.5px;
  margin-bottom:20px;
}
.hero-sub{
  font-size:17px;
  line-height:1.7;
  color:var(--text-dim);
  margin-bottom:32px;
  max-width:460px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:32px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.hero-visual{
  display:flex;
  justify-content:center;
  align-items:center;
  position:relative;
}
.float-glow{
  position:absolute;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(57,208,216,.16),transparent 65%);
  filter:blur(30px);
  z-index:0;
}
.phone-frame{
  width:280px;
  height:565px;
  border-radius:38px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  padding:11px;
  position:relative;
  z-index:1;
  box-shadow:0 30px 80px rgba(0,0,0,.45),0 0 24px rgba(57,208,216,.10);
  animation:floatPhone 6s ease-in-out infinite;
}
.phone-screen{
  width:100%;
  height:100%;
  border-radius:29px;
  background-size:cover;
  background-position:center;
  position:relative;
  overflow:hidden;
}
.screen-scrim{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(8,18,29,.28) 0%,rgba(8,18,29,.68) 55%,rgba(8,18,29,.92) 100%);
}
.screen-status{
  position:absolute;
  top:16px;left:22px;right:22px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:12px;
  font-weight:600;
  color:rgba(255,255,255,.9);
  z-index:2;
}
.screen-status .status-icons{letter-spacing:3px;font-size:10px}
.screen-app{
  position:absolute;
  left:22px;right:22px;
  top:70px;
  z-index:2;
}
.screen-brand{
  display:inline-block;
  padding:3px 12px;
  border-radius:var(--radius-xs);
  background:rgba(57,208,216,.18);
  border:1px solid rgba(57,208,216,.3);
  font-size:11px;
  color:var(--accent-bright);
  font-weight:600;
  margin-bottom:14px;
}
.screen-title{
  font-size:20px;
  font-weight:700;
  color:#fff;
  line-height:1.35;
  margin-bottom:6px;
}
.screen-desc{
  font-size:12px;
  color:rgba(255,255,255,.6);
  line-height:1.5;
  margin-bottom:20px;
}
.screen-skeleton{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-bottom:22px;
}
.sk-line{
  height:12px;
  border-radius:6px;
  background:rgba(255,255,255,.12);
}
.sk-line.w60{width:60%}
.sk-line.w85{width:85%}
.sk-line.w40{width:40%}
.screen-btn{
  display:inline-block;
  padding:10px 22px;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#06121b;
  font-size:13px;
  font-weight:700;
  box-shadow:0 0 16px rgba(57,208,216,.35);
}
.screen-swipe{
  position:absolute;
  bottom:10px;left:50%;
  transform:translateX(-50%);
  width:110px;height:4px;
  border-radius:2px;
  background:rgba(255,255,255,.3);
  z-index:2;
}
.hero-stats{
  display:flex;
  gap:28px;
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.08);
}
.hero-stat strong{
  display:block;
  font-size:24px;
  font-weight:700;
  color:var(--accent-bright);
  line-height:1.2;
}
.hero-stat span{
  display:block;
  font-size:13px;
  color:var(--text-faint);
  margin-top:2px;
}

.clips-section{background:rgba(255,255,255,.008)}
.clip-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.clip-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:all var(--transition);
  display:flex;
  flex-direction:column;
}
.clip-card:hover{
  background:var(--card-bg-hover);
  border-color:rgba(57,208,216,.3);
  transform:translateY(-4px);
  box-shadow:0 0 0 1px rgba(57,208,216,.15),0 14px 40px rgba(0,0,0,.3);
}
.clip-cover{
  position:relative;
  aspect-ratio:3/4;
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.clip-cover::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(8,18,29,0) 55%,rgba(8,18,29,.55) 100%);
}
.clip-duration{
  position:absolute;
  top:10px;right:10px;
  padding:2px 10px;
  border-radius:6px;
  background:rgba(0,0,0,.55);
  color:#fff;
  font-size:12px;
  font-weight:600;
  z-index:2;
  backdrop-filter:blur(4px);
}
.play-btn{
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%);
  width:48px;height:48px;
  border-radius:50%;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:all var(--transition);
  z-index:2;
  backdrop-filter:blur(6px);
}
.play-btn svg{
  width:18px;height:18px;
  fill:#fff;
  margin-left:2px;
}
.clip-card:hover .play-btn{
  background:var(--accent);
  border-color:var(--accent);
  box-shadow:0 0 24px rgba(57,208,216,.5);
  transform:translate(-50%,-50%) scale(1.06);
}
.clip-card:hover .play-btn svg{fill:#06121b}
.clip-info{padding:14px 16px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.clip-info h3{
  font-size:15px;
  line-height:1.5;
  color:rgba(255,255,255,.92);
  font-weight:600;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  min-height:45px;
}
.clip-tags{display:flex;gap:6px;flex-wrap:wrap}
.clip-views{
  font-size:12px;
  color:var(--text-faint);
  margin-top:auto;
}
.clip-tag{
  padding:2px 10px;
  border-radius:var(--radius-xs);
  background:var(--accent-dim);
  color:var(--accent-bright);
  font-size:11px;
  line-height:1.4;
}

.checklist-section{
  background:linear-gradient(180deg,rgba(13,27,44,0) 0%,rgba(13,27,44,.5) 100%);
}
.checklist-banner{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  min-height:240px;
  display:flex;
  align-items:flex-end;
  margin-bottom:40px;
  background-image:url('/assets/images/coverpic/cover-5.webp');
  background-size:cover;
  background-position:center;
}
.checklist-banner::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(8,18,29,.1) 0%,rgba(8,18,29,.85) 100%);
}
.banner-content{
  position:relative;
  z-index:1;
  padding:32px;
  max-width:520px;
}
.banner-content h3{
  font-size:22px;
  font-weight:700;
  color:#fff;
  margin-bottom:8px;
  line-height:1.4;
}
.banner-content p{
  font-size:14px;
  color:var(--text-dim);
  line-height:1.6;
}
.checklist-wrap{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:0;
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  backdrop-filter:blur(8px);
}
.checklist-item{
  display:flex;
  align-items:center;
  gap:20px;
  padding:22px 28px;
  border-bottom:1px solid rgba(255,255,255,.05);
  transition:background var(--transition);
}
.checklist-item:last-child{border-bottom:none}
.checklist-item:hover{background:rgba(255,255,255,.03)}
.checklist-num{
  font-size:30px;
  font-weight:700;
  color:var(--accent);
  line-height:1;
  flex-shrink:0;
  width:48px;
  text-align:center;
  opacity:.85;
}
.checklist-body{flex:1;min-width:0}
.checklist-body h3{
  font-size:18px;
  font-weight:600;
  color:#fff;
  line-height:1.4;
  margin-bottom:4px;
}
.checklist-body p{
  font-size:14px;
  color:var(--text-dim);
  line-height:1.6;
}
.checklist-side{
  flex-shrink:0;
  display:flex;
  align-items:center;
  gap:12px;
}
.checklist-src{
  font-size:12px;
  color:var(--text-faint);
}
.checklist-action{
  padding:6px 16px;
  border-radius:var(--radius-btn);
  background:var(--accent-dim);
  border:1px solid rgba(57,208,216,.2);
  color:var(--accent-bright);
  font-size:13px;
  font-weight:500;
  transition:all var(--transition);
  white-space:nowrap;
}
.checklist-action:hover{
  background:var(--accent);
  color:#06121b;
  box-shadow:0 0 16px rgba(57,208,216,.35);
}

.news-section{
  background:var(--bg-deep);
  position:relative;
}
.news-section::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(57,208,216,.15),transparent);
}
.news-list{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.news-card{
  display:flex;
  align-items:stretch;
  gap:18px;
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius-md);
  padding:16px;
  transition:all var(--transition);
}
.news-card:hover{
  background:var(--card-bg-hover);
  border-color:rgba(57,208,216,.25);
  transform:translateX(4px);
  box-shadow:0 8px 30px rgba(0,0,0,.2);
}
.news-thumb{
  flex-shrink:0;
  width:96px;height:96px;
  border-radius:var(--radius-sm);
  background-size:cover;
  background-position:center;
  position:relative;
  overflow:hidden;
  background-color:rgba(255,255,255,.05);
}
.news-thumb::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(57,208,216,.08),transparent 60%);
}
.news-body{
  flex:1;
  min-width:0;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:4px;
}
.news-title{
  font-size:16px;
  font-weight:600;
  color:rgba(255,255,255,.94);
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color var(--transition);
}
.news-card:hover .news-title{color:var(--accent-bright)}
.news-summary{
  font-size:13px;
  color:var(--text-dim);
  line-height:1.6;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:4px;
}
.news-cat{
  font-size:12px;
  color:var(--accent-bright);
  background:var(--accent-dim);
  padding:2px 10px;
  border-radius:var(--radius-xs);
  line-height:1.5;
}
.news-time{
  font-size:12px;
  color:var(--text-faint);
}
.news-arrow{
  margin-left:auto;
  color:var(--text-faint);
  font-size:18px;
  transition:all var(--transition);
  flex-shrink:0;
}
.news-card:hover .news-arrow{
  color:var(--accent-bright);
  transform:translateX(4px);
}
.news-empty{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  padding:60px 20px;
  background:var(--card-bg);
  border:1px dashed rgba(255,255,255,.12);
  border-radius:var(--radius-md);
  text-align:center;
}
.empty-ring{
  width:44px;height:44px;
  border-radius:50%;
  border:2px solid rgba(255,255,255,.12);
  border-top-color:var(--accent);
  animation:spin 1.4s linear infinite;
}
.news-empty p{
  font-size:14px;
  color:var(--text-dim);
}

.reviews-section{
  background:var(--bg-main);
}
.reviews-track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding-bottom:16px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.reviews-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 300px;
  scroll-snap-align:start;
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius-md);
  padding:24px;
  backdrop-filter:blur(8px);
  transition:all var(--transition);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.review-card:hover{
  background:var(--card-bg-hover);
  border-color:rgba(57,208,216,.2);
  transform:translateY(-3px);
}
.review-top{
  display:flex;
  align-items:center;
  gap:12px;
}
.review-avatar{
  width:36px;height:36px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--accent-dim),rgba(255,255,255,.1));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:700;
  color:var(--accent-bright);
  border:1px solid rgba(57,208,216,.2);
  flex-shrink:0;
}
.review-name{
  font-size:14px;
  font-weight:600;
  color:#fff;
  line-height:1.3;
}
.review-city{
  font-size:12px;
  color:var(--text-faint);
}
.review-stars{
  display:flex;
  gap:2px;
  color:var(--amber);
  font-size:13px;
}
.star{
  width:14px;height:14px;
  fill:currentColor;
}
.star.off{color:rgba(255,255,255,.15)}
.review-text{
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.82);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.review-source{
  font-size:11px;
  color:var(--text-faint);
  padding-top:8px;
  border-top:1px solid rgba(255,255,255,.06);
  margin-top:auto;
}

.cta-section{
  position:relative;
  padding:96px 0;
  background:linear-gradient(135deg,var(--bg-deep) 0%,#0a1a2c 100%);
  overflow:hidden;
}
.cta-section::before{
  content:'';
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%);
  width:700px;height:700px;
  background:radial-gradient(circle,rgba(57,208,216,.10) 0%,transparent 65%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:1;
  text-align:center;
  max-width:800px;
  margin:0 auto;
}
.cta-inner h2{
  font-size:28px;
  font-weight:700;
  color:#fff;
  line-height:1.4;
  margin-bottom:14px;
  letter-spacing:.5px;
}
.cta-inner p{
  font-size:15px;
  color:var(--text-dim);
  margin-bottom:36px;
  line-height:1.7;
}
.cta-btn-wrap{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:16px;
}
.cta-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-width:320px;
  padding:18px 44px;
  border-radius:var(--radius-btn);
  background:rgba(57,208,216,.12);
  border:1px solid rgba(57,208,216,.35);
  color:var(--accent-bright);
  font-size:16px;
  font-weight:700;
  letter-spacing:1px;
  transition:all var(--transition);
  box-shadow:0 0 0 1px rgba(57,208,216,.15),0 4px 30px rgba(57,208,216,.12);
}
.cta-btn:hover{
  background:var(--accent);
  color:#06121b;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(57,208,216,.4),0 8px 40px rgba(57,208,216,.3);
}
.cta-btn svg{
  width:16px;height:16px;
  transition:transform var(--transition);
}
.cta-btn:hover svg{transform:translateX(4px)}
.cta-note{
  font-size:13px;
  color:var(--text-faint);
}

.faq-section{
  background:var(--bg-main);
}
.faq-wrap{
  max-width:800px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.faq-item{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:all var(--transition);
}
.faq-item:hover{border-color:rgba(57,208,216,.18)}
.faq-item.open{
  border-color:rgba(57,208,216,.3);
  background:var(--card-bg-hover);
}
.faq-question{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:18px 22px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:rgba(255,255,255,.9);
  cursor:pointer;
  transition:color var(--transition);
}
.faq-question:hover{color:var(--accent-bright)}
.faq-icon{
  flex-shrink:0;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--accent-dim);
  border:1px solid rgba(57,208,216,.25);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  color:var(--accent-bright);
  transition:all var(--transition);
  font-weight:400;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  background:var(--accent);
  color:#06121b;
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-item.open .faq-answer{
  max-height:300px;
}
.faq-answer p{
  padding:0 22px 20px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-dim);
}

.site-footer{
  background:#050d15;
  border-top:1px solid rgba(255,255,255,.05);
  padding:64px 0 0;
  position:relative;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.05);
}
.footer-brand .brand{
  margin-bottom:16px;
}
.footer-brand .brand-text{color:#fff}
.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:var(--text-dim);
  max-width:280px;
  margin-bottom:16px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  position:relative;
  padding-bottom:10px;
}
.footer-col h4::after{
  content:'';
  position:absolute;
  left:0;bottom:0;
  width:22px;height:2px;
  border-radius:1px;
  background:var(--accent);
}
.footer-links{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  font-size:14px;
  color:var(--text-dim);
  transition:all var(--transition);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.footer-links a::before{
  content:'';
  width:4px;height:4px;
  border-radius:50%;
  background:var(--accent);
  opacity:.5;
  transition:opacity var(--transition);
}
.footer-links a:hover{
  color:var(--accent-bright);
  transform:translateX(3px);
}
.footer-links a:hover::before{opacity:1}
.footer-note{
  font-size:13px;
  color:var(--text-faint);
  line-height:1.8;
}
.copyright{
  padding:22px 0;
  text-align:center;
  font-size:13px;
  color:var(--text-faint);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
}
.copyright a{color:var(--text-faint)}
.copyright a:hover{color:var(--accent-bright)}
.footer-domain{
  font-size:12px;
  color:rgba(255,255,255,.25);
}

@keyframes floatPhone{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.5;transform:scale(.8)}
}
@keyframes spin{
  to{transform:rotate(360deg)}
}

@media (max-width:1024px){
  .container{padding:0 20px}
  .section{padding:76px 0}
  .hero-grid{grid-template-columns:1fr 1fr;gap:36px}
  .hero{padding:130px 0 70px}
  .clip-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .checklist-item{padding:20px 22px;gap:16px}
  .checklist-side{flex-direction:column;align-items:flex-end;gap:8px}
  .phone-frame{width:250px;height:505px}
}

@media (max-width:768px){
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:24px}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;
    top:64px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    background:rgba(8,18,29,.96);
    backdrop-filter:blur(16px);
    padding:16px 20px 20px;
    border-bottom:1px solid var(--card-border);
    box-shadow:0 20px 40px rgba(0,0,0,.4);
    transform:translateY(-16px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:all .3s var(--ease);
    margin-left:0;
  }
  .main-nav.open{
    transform:translateY(0);
    opacity:1;
    visibility:visible;
    pointer-events:auto;
  }
  .nav-link{
    padding:12px 16px;
    font-size:16px;
    border-radius:var(--radius-sm);
  }
  .nav-link.active::after{display:none}
  .nav-link.active{background:var(--accent-dim)}
  .nav-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero{padding:120px 0 60px;min-height:auto}
  .hero-content{max-width:100%}
  .hero h1{font-size:32px}
  .hero-sub{font-size:16px}
  .hero-visual{margin-top:8px}
  .phone-frame{width:230px;height:465px}
  .clip-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .checklist-banner{min-height:190px}
  .banner-content{padding:22px}
  .checklist-wrap{border-radius:var(--radius-md)}
  .checklist-item{flex-wrap:wrap;gap:12px;padding:18px 18px}
  .checklist-num{font-size:24px;width:34px}
  .checklist-body h3{font-size:16px}
  .checklist-side{flex-direction:row;align-items:center;width:100%;padding-left:46px}
  .news-card{padding:14px;gap:14px}
  .news-thumb{width:72px;height:72px;border-radius:10px}
  .news-title{font-size:15px}
  .news-summary{display:none}
  .reviews-track{gap:14px}
  .review-card{flex-basis:270px;padding:20px}
  .cta-section{padding:64px 0}
  .cta-inner h2{font-size:24px}
  .cta-btn{min-width:0;width:100%;padding:16px 30px;font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-desc{max-width:100%}
}

@media (max-width:520px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-head h2{font-size:22px}
  .hero{padding:110px 0 50px}
  .hero h1{font-size:28px;line-height:1.3}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-tags{gap:8px}
  .phone-frame{width:200px;height:405px}
  .clip-grid{grid-template-columns:1fr}
  .checklist-item{padding:16px 14px}
  .checklist-body p{font-size:13px}
  .news-thumb{width:60px;height:60px}
  .news-title{font-size:14px}
  .news-meta{gap:8px;flex-wrap:wrap}
  .review-card{flex-basis:250px}
  .cta-btn{padding:16px 20px;font-size:14px}
  .cta-note{font-size:12px}
  .faq-question{font-size:15px;padding:16px 16px}
  .faq-answer p{font-size:13px;padding:0 16px 18px}
  .footer-grid{gap:30px;padding-bottom:32px}
}

/* roulang page: article */
:root {
  --bg-deep: #0b1020;
  --bg-main: #101a2e;
  --bg-mid: #13203a;
  --bg-panel: rgba(255, 255, 255, 0.04);
  --bg-panel-hover: rgba(255, 255, 255, 0.08);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --border-color: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.16);
  --accent: #39d0d8;
  --accent-bright: #6ee7f0;
  --accent-soft: rgba(57, 208, 216, 0.14);
  --accent-glow: 0 0 0 1px rgba(57, 208, 216, 0.3), 0 4px 24px rgba(57, 208, 216, 0.25);
  --warn: #f5a85c;
  --text-main: rgba(255, 255, 255, 0.92);
  --text-sub: rgba(255, 255, 255, 0.68);
  --text-weak: rgba(255, 255, 255, 0.46);
  --font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Source Han Sans SC", system-ui, sans-serif;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-float: 0 12px 44px rgba(0, 0, 0, 0.45);
  --max-width: 1200px;
  --space-section: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background:
    radial-gradient(1200px 800px at 85% -5%, hsla(216, 40%, 20%, 0.65), transparent 60%),
    radial-gradient(900px 600px at -10% 30%, hsla(184, 55%, 22%, 0.32), transparent 55%),
    radial-gradient(600px 400px at 50% 110%, hsla(216, 36%, 14%, 0.4), transparent 60%),
    var(--bg-deep);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

.site-header.scrolled {
  background: rgba(10, 16, 30, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}

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

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(57, 208, 216, 0.25), rgba(57, 208, 216, 0.08));
  border: 1px solid rgba(57, 208, 216, 0.4);
  color: var(--accent-bright);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-text {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text-main);
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 15px;
  color: var(--text-sub);
  padding: 8px 2px;
  position: relative;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.25s ease, left 0.25s ease;
  box-shadow: 0 0 8px rgba(57, 208, 216, 0.6);
}

.nav-link:hover {
  color: var(--accent-bright);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
  left: 0;
}

.nav-link.active {
  color: var(--accent-bright);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 10px 22px;
  transition: all 0.2s ease;
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  outline: none;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, rgba(57, 208, 216, 0.22), rgba(57, 208, 216, 0.08));
  border: 1px solid rgba(57, 208, 216, 0.38);
  color: var(--accent-bright);
  box-shadow: 0 0 0 1px rgba(57, 208, 216, 0.12), 0 2px 14px rgba(57, 208, 216, 0.14);
}

.btn-primary:hover {
  background: linear-gradient(135deg, rgba(57, 208, 216, 0.34), rgba(57, 208, 216, 0.14));
  border-color: rgba(57, 208, 216, 0.62);
  box-shadow: var(--accent-glow);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 0 0 1px rgba(57, 208, 216, 0.2), 0 1px 8px rgba(57, 208, 216, 0.12);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text-sub);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.26);
  color: var(--text-main);
  transform: translateY(-1px);
}

.btn-ghost:active {
  transform: translateY(0) scale(0.98);
}

.btn-glow {
  box-shadow: 0 0 0 1px rgba(57, 208, 216, 0.3), 0 4px 28px rgba(57, 208, 216, 0.25);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  gap: 5px;
  padding: 10px 9px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-main);
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.3s ease;
}

.nav-toggle:hover span {
  background: var(--accent-bright);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.article-main {
  padding-top: 64px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 28px 0 20px;
  font-size: 13px;
  color: var(--text-weak);
}

.breadcrumb a {
  color: var(--text-sub);
  transition: color 0.2s ease;
}

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

.breadcrumb-sep {
  color: var(--text-weak);
  font-size: 12px;
}

.breadcrumb-current {
  color: var(--accent-bright);
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-hero {
  position: relative;
  padding: 56px 56px 44px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(140deg, rgba(13, 24, 42, 0.94), rgba(15, 26, 46, 0.88)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  margin-bottom: 32px;
}

.article-hero::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 208, 216, 0.12), transparent 70%);
  pointer-events: none;
}

.article-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-bright);
  background: var(--accent-soft);
  border: 1px solid rgba(57, 208, 216, 0.24);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.tag:hover {
  background: rgba(57, 208, 216, 0.2);
  border-color: rgba(57, 208, 216, 0.4);
}

.article-hero h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.32;
  color: var(--text-main);
  margin-bottom: 14px;
  letter-spacing: 0.01em;
}

.article-summary {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-sub);
  margin-bottom: 20px;
  max-width: 720px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  color: var(--text-weak);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-item::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(57, 208, 216, 0.5);
  display: inline-block;
}

.meta-item:first-child::before {
  display: none;
}

.article-body {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-lg);
  padding: 48px 56px 56px;
  margin-bottom: 32px;
}

.article-content {
  max-width: 780px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
  word-break: break-word;
}

.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  margin: 44px 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  color: var(--text-main);
}

.article-content h2::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 2px;
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.5;
  margin: 32px 0 14px;
  color: var(--text-main);
}

.article-content p {
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}

.article-content strong {
  color: var(--text-main);
  font-weight: 600;
}

.article-content blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(57, 208, 216, 0.07);
  padding: 18px 22px;
  margin: 28px 0;
  border-radius: 0 12px 12px 0;
  color: var(--text-sub);
}

.article-content blockquote p:last-child {
  margin-bottom: 0;
}

.article-content ul,
.article-content ol {
  margin: 16px 0 24px;
  padding-left: 22px;
}

.article-content li {
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.82);
}

.article-content li::marker {
  color: var(--accent);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 24px 0;
  box-shadow: var(--shadow-card);
}

.article-content figure {
  margin: 28px 0;
}

.article-content figcaption {
  font-size: 13px;
  color: var(--text-weak);
  text-align: center;
  padding-top: 10px;
}

.article-content a {
  color: var(--accent-bright);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(57, 208, 216, 0.4);
  transition: text-decoration-color 0.2s ease, color 0.2s ease;
}

.article-content a:hover {
  color: #9eeef4;
  text-decoration-color: rgba(57, 208, 216, 0.9);
}

.article-content hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
  margin: 36px 0;
}

.article-empty {
  text-align: center;
  padding: 80px 20px;
  max-width: 620px;
  margin: 0 auto;
}

.empty-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(57, 208, 216, 0.28);
  margin-bottom: 20px;
}

.article-empty p {
  font-size: 18px;
  color: var(--text-sub);
  margin-bottom: 24px;
}

.article-tags-section {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 48px;
}

.article-tags-section .tag {
  font-size: 13px;
  padding: 6px 14px;
}

.related-section {
  margin-bottom: 48px;
}

.related-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 28px;
  position: relative;
  padding-bottom: 14px;
  color: var(--text-main);
}

.related-section h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 2px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.related-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  display: block;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(57, 208, 216, 0.35);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(57, 208, 216, 0.1);
  background: rgba(255, 255, 255, 0.07);
}

.related-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.related-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}

.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.related-card:hover .related-cover img {
  transform: scale(1.04);
}

.related-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 16, 30, 0.4), transparent 60%);
  pointer-events: none;
}

.related-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  padding: 16px 18px 6px;
  transition: color 0.2s ease;
}

.related-card:hover h3 {
  color: var(--accent-bright);
}

.related-date {
  display: block;
  font-size: 13px;
  color: var(--text-weak);
  padding: 0 18px 18px;
}

.back-entry {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 56px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
}

.cta-section {
  position: relative;
  padding: 64px 48px;
  border-radius: var(--radius-lg);
  text-align: center;
  background:
    radial-gradient(600px 300px at 50% 0%, rgba(57, 208, 216, 0.09), transparent 70%),
    rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 72px;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -60px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 208, 216, 0.08), transparent 70%);
  pointer-events: none;
}

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

.cta-inner h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.cta-inner p {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 560px;
  margin: 0 auto 28px;
}

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

.site-footer {
  background: #070b14;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-weak);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 2px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-sub);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

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

.footer-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-weak);
}

.copyright {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: var(--text-weak);
}

.footer-domain {
  color: var(--text-weak);
  letter-spacing: 0.04em;
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .article-hero {
    padding: 44px 40px 36px;
  }

  .article-body {
    padding: 40px 36px 44px;
  }

  .article-hero h1 {
    font-size: 30px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 16, 30, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 28px;
    gap: 18px;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-link {
    font-size: 16px;
    width: 100%;
  }

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

  .nav-cta {
    display: inline-flex;
    font-size: 14px;
    padding: 8px 16px;
  }

  .article-main {
    padding-top: 56px;
  }

  .breadcrumb {
    padding: 20px 0 16px;
    font-size: 12px;
  }

  .article-hero {
    padding: 36px 24px 30px;
    border-radius: 16px;
  }

  .article-hero h1 {
    font-size: 26px;
    line-height: 1.4;
  }

  .article-summary {
    font-size: 14px;
  }

  .article-meta {
    gap: 10px;
    font-size: 12px;
  }

  .article-body {
    padding: 28px 22px 32px;
    border-radius: 16px;
  }

  .article-content {
    font-size: 15px;
    line-height: 1.75;
  }

  .article-content h2 {
    font-size: 21px;
    margin-top: 36px;
  }

  .article-content h3 {
    font-size: 18px;
  }

  .related-section h2 {
    font-size: 24px;
  }

  .related-grid {
    gap: 16px;
  }

  .back-entry {
    padding: 20px;
    flex-direction: column;
  }

  .back-entry .btn {
    width: 100%;
  }

  .cta-section {
    padding: 44px 24px;
  }

  .cta-inner h2 {
    font-size: 24px;
  }

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

  .copyright {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .article-hero h1 {
    font-size: 22px;
  }

  .article-hero {
    padding: 28px 18px 24px;
  }

  .article-body {
    padding: 22px 16px 28px;
  }

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

  .cta-actions {
    flex-direction: column;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .nav-cta {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* roulang page: category1 */
:root {
  --bg-primary: #0b1120;
  --bg-secondary: #101a2e;
  --bg-deep: #060a12;
  --surface: rgba(255,255,255,0.045);
  --surface-hover: rgba(255,255,255,0.09);
  --border: rgba(255,255,255,0.10);
  --border-strong: rgba(255,255,255,0.18);
  --accent: #39d0d8;
  --accent-bright: #6ee7f0;
  --accent-soft: rgba(57,208,216,0.12);
  --accent-border: rgba(57,208,216,0.35);
  --glow: 0 0 0 1px rgba(57,208,216,0.30), 0 4px 24px rgba(57,208,216,0.22);
  --amber: #f59e6c;
  --text-1: rgba(255,255,255,0.92);
  --text-2: rgba(255,255,255,0.64);
  --text-3: rgba(255,255,255,0.45);
  --radius-lg: 20px;
  --radius: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --shadow: 0 12px 36px rgba(0,0,0,0.32);
  --shadow-sm: 0 4px 16px rgba(0,0,0,0.22);
  --font: "PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --container: 1200px;
  --header-h: 64px;
  --section-space: 96px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-1);
  background:
    radial-gradient(1100px 520px at 85% -10%, rgba(57,208,216,0.07), transparent 60%),
    radial-gradient(760px 480px at 8% 18%, rgba(57,208,216,0.045), transparent 55%),
    linear-gradient(160deg, #131c30 0%, #0a111e 50%, #070c15 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent-bright); }
a:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 3px; border-radius: 4px; }
section[id] { scroll-margin-top: calc(var(--header-h) + 16px); }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all .25s ease;
  outline: none;
  font-family: var(--font);
}
.btn:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 3px; }
.btn-primary {
  background: linear-gradient(135deg, rgba(57,208,216,0.24), rgba(57,208,216,0.10));
  border-color: var(--accent-border);
  color: var(--accent-bright);
  box-shadow: var(--glow);
}
.btn-primary:hover {
  background: linear-gradient(135deg, rgba(57,208,216,0.36), rgba(57,208,216,0.16));
  box-shadow: 0 0 0 1px rgba(57,208,216,0.46), 0 6px 32px rgba(57,208,216,0.32);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0) scale(0.98); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; box-shadow: none; transform: none; }
.btn-ghost {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text-1);
}
.btn-ghost:hover { background: var(--surface-hover); border-color: rgba(255,255,255,0.28); transform: translateY(-1px); }
.btn-ghost:active { transform: translateY(0) scale(0.98); }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled {
  background: rgba(9,14,24,0.84);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 8px 30px rgba(0,0,0,0.28);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-1);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.brand:hover { color: var(--text-1); }
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(57,208,216,0.22), rgba(57,208,216,0.06));
  border: 1px solid var(--accent-border);
  color: var(--accent-bright);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  color: var(--text-2);
  font-size: 15px;
  text-decoration: none;
  font-weight: 500;
  transition: color .25s ease, background .25s ease, box-shadow .25s ease;
}
.nav-link:hover { color: var(--text-1); background: var(--surface); }
.nav-link.active {
  color: var(--accent-bright);
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px var(--accent-border);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-cta { padding: 8px 18px; font-size: 14px; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px; height: 40px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  transition: background .25s ease;
}
.nav-toggle:hover { background: var(--surface-hover); }
.nav-toggle:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 3px; }
.nav-toggle span { width: 18px; height: 2px; background: var(--text-1); border-radius: 2px; transition: all .3s ease; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 76px) 0 76px;
  background:
    linear-gradient(180deg, rgba(7,12,22,0.88) 0%, rgba(10,16,28,0.92) 100%),
    url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: auto -10% -120px -10%;
  height: 320px;
  background: radial-gradient(ellipse at 50% 100%, rgba(57,208,216,0.13), transparent 65%);
  pointer-events: none;
}
.breadcrumb {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}
.breadcrumb a { color: var(--text-2); text-decoration: none; transition: color .2s ease; }
.breadcrumb a:hover { color: var(--accent-bright); }
.breadcrumb .sep { opacity: 0.55; }
.breadcrumb .current { color: var(--text-2); }
.page-hero h1 {
  font-size: 44px;
  line-height: 1.22;
  font-weight: 700;
  color: var(--text-1);
  margin: 0 0 18px;
  max-width: 800px;
  letter-spacing: -0.01em;
  position: relative;
  z-index: 1;
}
.hero-accent {
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-bright) 60%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-lead {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-2);
  max-width: 640px;
  margin: 0 0 34px;
  position: relative;
  z-index: 1;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; position: relative; z-index: 1; }
.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  max-width: 740px;
  position: relative;
  z-index: 1;
}
.meta-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  transition: all .25s ease;
}
.meta-item:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.meta-label { font-size: 13px; color: var(--text-3); display: block; margin-bottom: 6px; }
.meta-value { font-size: 15px; color: var(--text-1); font-weight: 600; }
.section { padding: var(--section-space) 0; position: relative; }
.section-head { margin-bottom: 44px; max-width: 640px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 13px;
  color: var(--accent-bright);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.section-head h2 { font-size: 30px; line-height: 1.28; color: var(--text-1); margin: 0 0 14px; font-weight: 700; }
.section-head p { color: var(--text-2); font-size: 15px; line-height: 1.8; margin: 0; }
.head-line { width: 32px; height: 3px; border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--accent-bright)); margin-top: 18px; }
.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.feature-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  overflow: hidden;
  transition: all .28s ease;
}
.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(320px 130px at 50% 0%, rgba(57,208,216,0.09), transparent 70%);
  opacity: 0;
  transition: opacity .3s ease;
  pointer-events: none;
}
.feature-card:hover {
  background: var(--surface-hover);
  border-color: var(--accent-border);
  transform: translateY(-4px);
  box-shadow: var(--shadow), 0 0 0 1px rgba(57,208,216,0.12);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  font-weight: 800;
  color: var(--accent-bright);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.feature-card h3 { font-size: 18px; color: var(--text-1); margin: 0 0 10px; font-weight: 600; }
.feature-card p { font-size: 14px; line-height: 1.8; color: var(--text-2); margin: 0; }
.steps-wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px 26px;
  transition: all .3s ease;
}
.step-card:hover {
  border-color: var(--accent-border);
  background: var(--surface-hover);
  transform: translateY(-3px);
}
.step-num {
  display: block;
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.2px rgba(57,208,216,0.55);
  margin-bottom: 16px;
}
.step-num::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--accent);
  margin-top: 12px;
  border-radius: 2px;
  opacity: 0.7;
}
.step-card h3 { font-size: 17px; color: var(--text-1); margin: 0 0 8px; font-weight: 600; }
.step-card p { font-size: 14px; color: var(--text-2); line-height: 1.75; margin: 0; }
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: visible;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.split-media img { width: 100%; height: 100%; object-fit: cover; display: block; aspect-ratio: 4 / 3; border-radius: var(--radius-lg); }
.split-media::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, transparent 45%, rgba(7,12,22,0.5));
  pointer-events: none;
}
.split-media-mini {
  position: absolute;
  right: -18px;
  bottom: -22px;
  width: 46%;
  border-radius: 14px;
  overflow: hidden;
  border: 4px solid rgba(9,14,24,0.95);
  box-shadow: var(--shadow);
  z-index: 2;
}
.split-media-mini img { width: 100%; display: block; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 10px; }
.split-content h2 { font-size: 28px; line-height: 1.3; color: var(--text-1); margin: 0 0 16px; font-weight: 700; }
.split-content p { font-size: 15px; line-height: 1.85; color: var(--text-2); margin: 0 0 20px; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.check-list li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; line-height: 1.7; color: var(--text-2); }
.check-mark {
  flex: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 3px;
}
.check-mark::before {
  content: '';
  width: 6px;
  height: 10px;
  border: solid var(--accent-bright);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  display: block;
  margin-top: -3px;
  margin-left: -1px;
}
.link-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.channel-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  text-decoration: none;
  color: var(--text-1);
  transition: all .28s ease;
}
.channel-card:hover {
  border-color: var(--accent-border);
  background: var(--surface-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.channel-card:hover .channel-go { gap: 10px; }
.channel-card .tag {
  align-self: flex-start;
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  color: var(--accent-bright);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}
.channel-card h3 { font-size: 18px; margin: 0 0 8px; font-weight: 600; color: var(--text-1); }
.channel-card p { font-size: 14px; color: var(--text-2); line-height: 1.75; margin: 0 0 18px; flex: 1; }
.channel-go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-bright);
  font-size: 14px;
  font-weight: 600;
  transition: gap .25s ease;
}
.faq-wrap { max-width: 860px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color .25s ease, background .25s ease;
}
.faq-item:hover { border-color: rgba(255,255,255,0.18); }
.faq-item.open { border-color: var(--accent-border); background: var(--surface-hover); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: transparent;
  border: none;
  color: var(--text-1);
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  text-align: left;
  transition: color .25s ease;
}
.faq-q:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: -2px; border-radius: var(--radius-sm); }
.faq-icon {
  flex: none;
  width: 26px; height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent-border);
  color: var(--accent-bright);
  font-size: 15px;
  font-style: normal;
  transition: transform .3s ease, background .3s ease;
}
.faq-item.open .faq-icon { transform: rotate(135deg); background: var(--accent-soft); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a-inner { padding: 0 20px 20px 60px; font-size: 14px; line-height: 1.85; color: var(--text-2); }
.cta-section {
  position: relative;
  padding: 88px 0;
  background:
    radial-gradient(800px 300px at 50% 0%, rgba(57,208,216,0.13), transparent 70%),
    linear-gradient(180deg, rgba(11,17,32,0.94), rgba(6,10,18,0.96)),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border-top: 1px solid rgba(255,255,255,0.05);
  text-align: center;
}
.cta-section h2 { font-size: 28px; line-height: 1.3; color: var(--text-1); margin: 0 0 12px; font-weight: 700; }
.cta-section p { color: var(--text-2); margin: 0 0 34px; font-size: 15px; }
.cta-section .btn-primary { animation: glowPulse 3.2s ease-in-out infinite; }
@keyframes glowPulse {
  0%, 100% { box-shadow: var(--glow); }
  50% { box-shadow: 0 0 0 1px rgba(57,208,216,0.42), 0 6px 34px rgba(57,208,216,0.34); }
}
.cta-note { font-size: 13px; color: var(--text-3); margin-top: 18px; }
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 64px 0 36px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 44px;
  margin-bottom: 48px;
}
.footer-brand .brand { margin-bottom: 14px; }
.footer-desc { font-size: 14px; line-height: 1.8; color: var(--text-2); margin: 14px 0 0; max-width: 320px; }
.footer-col h4 {
  font-size: 15px;
  color: var(--text-1);
  margin: 0 0 18px;
  font-weight: 600;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 22px; height: 2px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0.6;
}
.footer-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.footer-links a { color: var(--text-2); text-decoration: none; font-size: 14px; transition: color .2s ease; }
.footer-links a:hover { color: var(--accent-bright); }
.footer-note { font-size: 13px; line-height: 1.8; color: var(--text-3); margin: 0; }
.copyright {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 13px;
  color: var(--text-3);
}
.footer-domain { letter-spacing: 0.02em; }
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.revealed { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .cta-section .btn-primary { animation: none; }
}
@media (max-width: 1024px) {
  .steps-wrap { grid-template-columns: repeat(2, 1fr); }
  .link-grid { grid-template-columns: repeat(2, 1fr); }
  .split-grid { grid-template-columns: 1fr; gap: 54px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .page-hero h1 { font-size: 38px; }
}
@media (max-width: 768px) {
  :root { --section-space: 64px; }
  .container { padding: 0 20px; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: calc(var(--header-h) - 8px);
    left: 16px;
    right: 16px;
    flex-direction: column;
    gap: 4px;
    background: rgba(9,14,24,0.97);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    padding: 14px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-14px);
    transition: opacity .3s ease, transform .3s ease, visibility .3s ease;
    box-shadow: var(--shadow);
  }
  .main-nav.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .main-nav .nav-link { width: 100%; justify-content: center; padding: 12px 16px; }
  .page-hero h1 { font-size: 32px; }
  .hero-lead { font-size: 15px; }
  .hero-meta { grid-template-columns: 1fr 1fr; }
  .faq-a-inner { padding-left: 20px; }
  .split-media-mini { right: 8px; bottom: -14px; }
}
@media (max-width: 520px) {
  .brand { font-size: 16px; }
  .brand-icon { width: 30px; height: 30px; font-size: 12px; }
  .nav-cta { padding: 8px 13px; font-size: 13px; }
  .page-hero h1 { font-size: 28px; }
  .hero-meta { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .cards-grid { grid-template-columns: 1fr; }
  .steps-wrap { grid-template-columns: 1fr; }
  .link-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .copyright { flex-direction: column; text-align: center; }
  .cta-section h2 { font-size: 24px; }
  .section-head h2 { font-size: 26px; }
}
::selection { background: rgba(57,208,216,0.28); color: #fff; }