/* roulang page: index */
:root{
  --bg-deep:#05080F;
  --bg-base:#0A0F1B;
  --bg-elev:#101827;
  --glass:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.025));
  --glass-line:rgba(140,190,255,.14);
  --primary:#0FE0C0;
  --primary-deep:#08B99E;
  --accent:#FF6A3D;
  --grad-tech:linear-gradient(120deg,#0FE0C0 0%,#2E6BFF 55%,#7C5CFF 100%);
  --text-1:#EAF2FF;
  --text-2:#A7B6CE;
  --text-3:#6B7A93;
  --ok:#3DDC97;
  --warn:#FFB020;
  --hair:rgba(255,255,255,.08);
  --r-lg:18px;
  --r-sm:14px;
  --r-pill:999px;
  --sh-card:0 18px 44px rgba(2,7,18,.55);
  --sh-float:0 24px 60px rgba(0,0,0,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-1);text-decoration:none;transition:color 240ms var(--ease);}
a:hover{color:var(--primary);}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{max-width:1180px;width:100%;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
@media (min-width:1400px){.container{max-width:1240px;}}
@media (max-width:575.98px){.container{padding-left:18px;padding-right:18px;}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1050;
  background:rgba(6,10,20,.35);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--hair);
  box-shadow:0 6px 24px rgba(0,0,0,.25);
  transition:background 240ms var(--ease),box-shadow 240ms var(--ease),padding 240ms var(--ease);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:76px;transition:height 240ms var(--ease);}
.site-header.is-stuck{background:rgba(5,8,15,.94);box-shadow:0 8px 30px rgba(0,0,0,.45);}
.site-header.is-stuck .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:32px;height:32px;flex:0 0 auto;filter:drop-shadow(0 0 10px rgba(15,224,192,.45));}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--text-1);}
.brand:hover .brand-text{color:var(--primary);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;}
.nav-links a{
  position:relative;padding:8px 14px;font-size:15px;font-weight:500;color:var(--text-2);border-radius:10px;
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.nav-links a.active{color:var(--text-1);}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px rgba(15,224,192,.85);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all 240ms var(--ease);
}
.icon-btn:hover{border-color:var(--primary);background:rgba(15,224,192,.1);}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--primary);color:#04211C;font-weight:600;font-size:15px;
  padding:11px 24px;border:0;border-radius:var(--r-pill);cursor:pointer;
  box-shadow:0 0 0 1px rgba(15,224,192,.35),0 10px 30px -8px rgba(15,224,192,.55);
  transition:transform 240ms var(--ease),filter 240ms var(--ease),background 240ms var(--ease);
}
.btn-main:hover{filter:brightness(1.08);transform:translateY(-2px);color:#04211C;}
.btn-main:active{background:var(--primary-deep);transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--text-1);font-weight:500;font-size:15px;
  padding:11px 24px;border:1px solid var(--glass-line);border-radius:var(--r-pill);cursor:pointer;
  transition:all 240ms var(--ease);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--primary);color:var(--text-1);}
.btn-mini{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  padding:7px 16px;border-radius:var(--r-pill);border:1px solid rgba(15,224,192,.5);
  color:var(--primary);background:rgba(15,224,192,.06);cursor:pointer;transition:all 240ms var(--ease);
}
.btn-mini:hover{background:rgba(15,224,192,.16);color:var(--primary);}
.hamburger{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);}
.search-pop{
  position:absolute;top:100%;right:24px;width:min(380px,calc(100vw - 36px));
  padding:16px;border-radius:var(--r-lg);border:1px solid var(--glass-line);
  background:rgba(8,13,24,.96);backdrop-filter:blur(18px);box-shadow:var(--sh-float);
  opacity:0;visibility:hidden;transform:translateY(-8px);transition:all 240ms var(--ease);
}
.search-pop.open{opacity:1;visibility:visible;transform:translateY(0);}
.search-pop input{
  width:100%;padding:12px 16px;border-radius:12px;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);color:var(--text-1);
}
.search-pop input::placeholder{color:var(--text-3);}
.search-pop input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(15,224,192,.18);}
.offcanvas{background:rgba(5,8,15,.96) !important;backdrop-filter:blur(20px);border-left:1px solid var(--glass-line) !important;color:var(--text-1);}
.offcanvas-header{border-bottom:1px solid var(--hair);padding:20px 22px;}
.offcanvas-body{padding:14px 22px 28px;}
.drawer-link{display:block;font-size:18px;line-height:56px;color:var(--text-1);border-bottom:1px solid var(--hair);}
.drawer-link.active{color:var(--primary);}
.drawer-cta{margin-top:22px;display:flex;flex-direction:column;gap:12px;}

/* ============ Hero ============ */
.hero{position:relative;padding:150px 0 0;overflow:hidden;background:var(--bg-deep);}
.hero-aurora{
  position:absolute;top:-380px;left:50%;transform:translateX(-50%);
  width:1200px;height:1200px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(15,224,192,.18) 0%,rgba(46,107,255,.08) 38%,transparent 62%);
}
.grid-overlay{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
}
.hero .container{position:relative;z-index:2;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.04em;
  padding:6px 14px;border-radius:var(--r-pill);border:1px solid rgba(15,224,192,.35);
  background:rgba(15,224,192,.1);color:var(--primary);margin-bottom:22px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);}
h1{font-size:40px;line-height:1.2;font-weight:700;letter-spacing:-.02em;margin:0 0 20px;max-width:24em;}
h1 .hl{background:var(--grad-tech);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);max-width:42em;margin:0 0 30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-metrics{display:flex;flex-wrap:wrap;gap:38px;padding-top:26px;border-top:1px solid var(--hair);}
.metric-num{font-size:30px;font-weight:700;color:var(--primary);line-height:1.2;letter-spacing:-.01em;}
.metric-label{font-size:14px;color:var(--text-3);margin-top:4px;}

.phone-wrap{position:relative;display:flex;justify-content:center;padding:10px 0 0;}
.phone-glow{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:340px;height:340px;border-radius:50%;background:rgba(15,224,192,.22);
  filter:blur(60px);pointer-events:none;
}
.phone{
  position:relative;width:min(320px,100%);aspect-ratio:9/16;height:600px;
  border-radius:28px;border:1px solid var(--glass-line);
  background:var(--glass);backdrop-filter:blur(16px);
  padding:10px;box-shadow:var(--sh-float),inset 0 1px 0 rgba(255,255,255,.14);
  transform:rotate(-3deg);
}
.phone::after{
  content:"";position:absolute;inset:auto 0 -34px 0;height:70px;border-radius:50%;
  background:radial-gradient(ellipse,rgba(15,224,192,.28),transparent 70%);pointer-events:none;
}
.phone-screen{position:relative;width:100%;height:100%;border-radius:20px;overflow:hidden;background:#070C16;}
.phone-screen img{width:100%;height:100%;object-fit:cover;}
.phone-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.5) 0%,transparent 32%,transparent 52%,rgba(5,8,15,.88) 100%);}
.duration-tag{
  position:absolute;top:14px;left:14px;font-size:12px;padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(0,0,0,.55);color:#fff;letter-spacing:.04em;
}
.phone-caption{position:absolute;left:16px;right:16px;bottom:16px;font-size:15px;font-weight:600;line-height:1.5;}
.play-btn{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;border:1px solid rgba(15,224,192,.7);
  background:rgba(15,224,192,.16);backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 10px rgba(15,224,192,.08),0 0 34px rgba(15,224,192,.5);
}
.play-btn svg{margin-left:3px;}
.hero-strip{display:flex;gap:14px;margin-top:54px;height:124px;overflow:hidden;padding-bottom:0;}
.strip-card{
  flex:0 0 auto;width:150px;height:230px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--glass-line);background:var(--glass);position:relative;
}
.strip-card img{width:100%;height:100%;object-fit:cover;opacity:.85;}
.strip-card span{
  position:absolute;left:10px;right:10px;bottom:10px;font-size:12px;color:var(--text-1);
  text-shadow:0 1px 6px rgba(0,0,0,.8);
}
@media (max-width:1199.98px){
  .hero{padding-top:132px;}
  h1{font-size:34px;}
}
@media (max-width:991.98px){
  .phone{height:auto;aspect-ratio:9/16;max-width:300px;transform:none;}
  .phone-wrap{margin-top:44px;}
  .hero-strip{height:104px;}
  .strip-card{width:126px;height:190px;}
}
@media (max-width:575.98px){
  .hero{padding-top:112px;}
  h1{font-size:28px;line-height:1.3;}
  .hero-sub{font-size:16px;}
  .hero-metrics{gap:22px;}
  .metric-num{font-size:24px;}
  .hero-strip{height:88px;}
  .strip-card{width:112px;height:168px;}
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-deep);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:28px;}
.section-title{font-size:28px;line-height:1.35;font-weight:600;margin:0 0 10px;letter-spacing:-.01em;}
.section-desc{font-size:15px;color:var(--text-2);margin:0;max-width:46em;}
.text-link{font-size:14px;color:var(--primary);white-space:nowrap;border-bottom:1px solid transparent;}
.text-link:hover{color:var(--primary);border-bottom-color:var(--primary);}
.divider-grad{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(15,224,192,.4),transparent);}
.badge-cat{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:.04em;padding:3px 12px;
  border-radius:var(--r-pill);border:1px solid rgba(15,224,192,.35);background:rgba(15,224,192,.1);color:var(--primary);
}
.badge-hot{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:.04em;padding:3px 12px;
  border-radius:var(--r-pill);border:1px solid rgba(255,106,61,.45);background:rgba(255,106,61,.12);color:var(--accent);
}
.chip{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:.04em;padding:4px 11px;
  border-radius:10px;border:1px solid var(--glass-line);background:rgba(255,255,255,.04);color:var(--text-2);
}
@media (max-width:1199.98px){.section{padding:72px 0;}}
@media (max-width:575.98px){.section{padding:56px 0;}.section-title{font-size:22px;}}

/* ============ 信任条 ============ */
.trust-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);
  background:var(--bg-base);
}
.trust-item{padding:26px 20px;text-align:center;border-right:1px solid var(--hair);}
.trust-item:last-child{border-right:0;}
.trust-num{font-size:32px;font-weight:700;color:var(--primary);line-height:1.2;letter-spacing:-.01em;}
.trust-label{font-size:14px;color:var(--text-2);margin-top:6px;}
@media (max-width:767.98px){
  .trust-bar{grid-template-columns:repeat(2,1fr);}
  .trust-item:nth-child(2){border-right:0;}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-bottom:1px solid var(--hair);}
  .trust-num{font-size:26px;}
}

/* ============ 横滑片段 ============ */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 24px 22px;margin:0 -24px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.clip-card{
  flex:0 0 auto;width:240px;aspect-ratio:9/16;border-radius:var(--r-lg);overflow:hidden;
  position:relative;scroll-snap-align:start;border:1px solid var(--glass-line);
  background:var(--glass);backdrop-filter:blur(12px);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.14);
  transition:transform 240ms var(--ease),border-color 240ms var(--ease);
}
.clip-card:hover{transform:translateY(-4px);border-color:rgba(15,224,192,.45);}
.clip-card img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.clip-card:hover img{transform:scale(1.04);}
.clip-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.55) 0%,transparent 30%,transparent 48%,rgba(5,8,15,.92) 100%);}
.clip-time{position:absolute;top:12px;left:12px;font-size:12px;color:var(--accent);background:rgba(0,0,0,.55);padding:3px 10px;border-radius:var(--r-pill);}
.clip-hot{position:absolute;top:12px;right:12px;font-size:12px;color:var(--primary);border:1px solid rgba(15,224,192,.45);background:rgba(15,224,192,.12);padding:3px 10px;border-radius:var(--r-pill);}
.clip-body{position:absolute;left:14px;right:14px;bottom:14px;}
.clip-title{font-size:15px;font-weight:600;line-height:1.5;margin:0 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clip-meta{font-size:12px;color:var(--text-3);}
.rail-hint{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.rail-hint .line{width:52px;height:1px;background:linear-gradient(90deg,transparent,rgba(15,224,192,.6));}
@media (max-width:575.98px){.clip-card{width:78vw;}}

/* ============ 清单 + 跟买卡 ============ */
.checklist{list-style:none;margin:0;padding:0;border-top:1px solid var(--hair);}
.check-row{
  display:flex;align-items:center;gap:20px;padding:18px 12px;min-height:104px;
  border-bottom:1px solid var(--hair);transition:background 240ms var(--ease);
}
.check-row:hover{background:rgba(255,255,255,.04);}
.check-row:hover .check-num{text-shadow:0 0 14px rgba(15,224,192,.85);}
.check-num{font-size:30px;font-weight:700;color:var(--primary);width:44px;flex:0 0 auto;line-height:1;text-align:center;}
.check-thumb{width:96px;height:96px;flex:0 0 auto;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--glass-line);}
.check-thumb img{width:100%;height:100%;object-fit:cover;}
.check-body{flex:1 1 auto;min-width:0;}
.check-title{font-size:18px;font-weight:600;margin:0 0 8px;line-height:1.4;}
.check-chips{display:flex;flex-wrap:wrap;gap:8px;}
.sticky-card{
  position:sticky;top:96px;border-radius:var(--r-lg);padding:26px;
  background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(16px);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.14);
}
.sticky-card h3{font-size:20px;font-weight:600;margin:0 0 12px;}
.sticky-card p{font-size:14px;color:var(--text-2);margin:0 0 18px;line-height:1.8;}
.assure{list-style:none;margin:0 0 22px;padding:0;font-size:14px;color:var(--text-2);}
.assure li{display:flex;gap:10px;align-items:flex-start;padding:7px 0;line-height:1.7;}
.assure svg{flex:0 0 auto;margin-top:5px;}
@media (max-width:991.98px){
  .check-row{flex-wrap:wrap;gap:14px;}
  .check-thumb{width:72px;height:72px;}
  .check-body{flex:1 1 180px;}
  .check-row .btn-mini{width:100%;justify-content:center;margin-top:6px;}
  .sticky-card{position:static;margin-top:24px;}
}

/* ============ 能力 / 服务 ============ */
.cap-card{
  border-radius:var(--r-lg);background:var(--bg-elev);border:1px solid var(--hair);
  padding:28px;height:100%;transition:transform 240ms var(--ease),border-color 240ms var(--ease);
  box-shadow:var(--sh-card);
}
.cap-card:hover{transform:translateY(-4px);border-color:rgba(15,224,192,.45);}
.cap-icon{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(15,224,192,.35);background:rgba(15,224,192,.08);margin-bottom:20px;
}
.cap-card h3{font-size:20px;font-weight:600;margin:0 0 12px;}
.cap-card p{font-size:15px;color:var(--text-2);margin:0 0 18px;line-height:1.8;}
.cap-wide{
  border-radius:var(--r-lg);background:var(--bg-elev);border:1px solid var(--hair);
  padding:0;overflow:hidden;margin-top:24px;box-shadow:var(--sh-card);
}
.cap-wide-inner{display:grid;grid-template-columns:6fr 6fr;align-items:center;gap:0;}
.cap-wide-text{padding:38px 40px;}
.cap-wide-text h3{font-size:22px;font-weight:600;margin:0 0 14px;}
.cap-wide-text p{font-size:15px;color:var(--text-2);margin:0 0 20px;line-height:1.85;}
.cap-wide-img{height:100%;min-height:280px;}
.cap-wide-img img{width:100%;height:100%;object-fit:cover;}
@media (max-width:991.98px){
  .cap-wide-inner{grid-template-columns:1fr;}
  .cap-wide-img{min-height:220px;order:-1;}
  .cap-wide-text{padding:28px 24px;}
}

/* ============ 资讯列表 ============ */
.news-card{
  border-radius:var(--r-lg);background:var(--bg-elev);border:1px solid var(--hair);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform 240ms var(--ease),border-color 240ms var(--ease);
  box-shadow:var(--sh-card);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(15,224,192,.45);}
.news-cover{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--hair);}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-body h3{font-size:18px;font-weight:600;line-height:1.5;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card.is-feature .news-body h3{font-size:22px;}
.news-sum{font-size:14px;color:var(--text-2);line-height:1.75;margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}
.empty-state{
  height:220px;border-radius:var(--r-lg);border:1px dashed var(--glass-line);background:var(--bg-elev);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:20px;
}
.empty-state p{margin:0;color:var(--text-2);font-size:15px;}

/* ============ 口碑 ============ */
.voice-card{
  flex:0 0 auto;width:300px;border-radius:var(--r-lg);padding:22px;
  background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(14px);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.14);
  scroll-snap-align:start;
}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;color:#04211C;background:linear-gradient(135deg,var(--primary),#2E6BFF);
}
.voice-name{font-size:14px;font-weight:600;}
.voice-time{font-size:12px;color:var(--text-3);}
.stars{color:var(--accent);font-size:14px;letter-spacing:2px;margin-bottom:10px;}
.voice-text{font-size:15px;line-height:1.8;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
@media (max-width:575.98px){.voice-card{width:80vw;}}

/* ============ FAQ ============ */
.faq-acc .accordion-item{
  background:var(--bg-elev);border:1px solid var(--hair);border-radius:16px;margin-bottom:14px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:transparent;color:var(--text-1);font-size:17px;font-weight:600;
  padding:20px 22px;box-shadow:none;border-radius:16px;min-height:48px;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--text-1);background:rgba(255,255,255,.03);}
.faq-acc .accordion-button::after{
  filter:invert(1) sepia(1) saturate(4) hue-rotate(120deg);opacity:.85;
  transition:transform 240ms var(--ease);
}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:-2px;}
.faq-acc .accordion-body{padding:0 22px 22px;font-size:16px;line-height:1.85;color:var(--text-2);}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--primary);background:rgba(255,255,255,.045);}

/* ============ CTA + 表单 ============ */
.cta-card{
  border-radius:var(--r-lg);padding:40px;background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(16px);box-shadow:var(--sh-float),inset 0 1px 0 rgba(255,255,255,.14);
}
.cta-card h2{font-size:26px;font-weight:600;margin:0 0 14px;line-height:1.4;}
.cta-card .lead{font-size:15px;color:var(--text-2);line-height:1.85;margin:0 0 22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;padding:13px 16px;border-radius:12px;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);color:var(--text-1);transition:all 240ms var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(15,224,192,.18);}
.field textarea{min-height:110px;resize:vertical;}
.privacy{font-size:12px;color:var(--text-3);line-height:1.7;margin:14px 0 0;}
.form-tip{
  display:none;margin-top:14px;font-size:14px;color:var(--ok);
  border:1px solid rgba(61,220,151,.35);background:rgba(61,220,151,.08);
  border-radius:12px;padding:10px 14px;
}
.form-tip.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:#04070D;border-top:1px solid var(--hair);padding:70px 0 26px;position:relative;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(15,224,192,.4),transparent);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin:0 0 18px;letter-spacing:.02em;}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.85;margin:0;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid var(--hair);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 移动端底条 ============ */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;display:none;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(5,8,15,.94);backdrop-filter:blur(18px);border-top:1px solid var(--glass-line);
}
.mobile-bar .mb-text{flex:1 1 auto;font-size:13px;color:var(--text-2);line-height:1.5;}
.mobile-bar .btn-main{padding:10px 20px;font-size:14px;}
@media (max-width:991.98px){
  body{padding-bottom:72px;}
  .mobile-bar{display:flex;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .clip-card:hover,.news-card:hover,.cap-card:hover,.btn-main:hover,.btn-ghost:hover{transform:none !important;}
  .news-card:hover .news-cover img,.clip-card:hover img{transform:none !important;}
}

/* roulang page: article */
:root{
  --bg-deep:#05080F;
  --bg-base:#0A0F1B;
  --bg-elev:#101827;
  --glass:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  --glass-line:rgba(140,190,255,.14);
  --primary:#0FE0C0;
  --primary-deep:#08B99E;
  --accent:#FF6A3D;
  --grad-tech:linear-gradient(120deg,#0FE0C0 0%,#2E6BFF 55%,#7C5CFF 100%);
  --text-1:#EAF2FF;
  --text-2:#A7B6CE;
  --text-3:#6B7A93;
  --line:rgba(255,255,255,.08);
  --success:#3DDC97;
  --warn:#FFB020;
  --radius-lg:18px;
  --radius-sm:14px;
  --radius-xs:12px;
  --radius-pill:999px;
  --shadow-card:0 18px 44px rgba(2,7,18,.55);
  --shadow-float:0 24px 60px rgba(0,0,0,.6);
  --ease:240ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
a:hover{color:var(--primary)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{max-width:1180px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
@media (min-width:1400px){.container{max-width:1240px}}
@media (max-width:575.98px){.container{padding-left:18px;padding-right:18px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(6,10,20,.35);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 6px 24px rgba(0,0,0,.25);
  transition:background var(--ease),box-shadow var(--ease),height var(--ease),border-color var(--ease);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px;transition:height var(--ease)}
.site-header.is-scrolled{background:rgba(5,8,15,.94);box-shadow:0 8px 30px rgba(0,0,0,.45);border-bottom-color:rgba(140,190,255,.14)}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{flex:0 0 auto;filter:drop-shadow(0 0 10px rgba(15,224,192,.35))}
.nav-links{align-items:center;gap:30px}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0}
.nav-links a:hover{color:var(--text-1)}
.nav-links a.active{color:var(--text-1)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(15,224,192,.75);
}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-pill);border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text-2);transition:all var(--ease)
}
.icon-btn:hover{color:var(--primary);border-color:rgba(15,224,192,.5);background:rgba(15,224,192,.08)}
.search-panel{
  position:absolute;left:0;right:0;top:100%;padding:0 24px;max-height:0;overflow:hidden;
  background:rgba(5,8,15,.96);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;transition:max-height var(--ease),padding var(--ease),border-color var(--ease)
}
.search-panel.open{max-height:120px;padding:18px 24px;border-bottom-color:var(--glass-line)}
.search-inner{max-width:1180px;margin:0 auto;display:flex;gap:12px}
.search-inner input{
  flex:1;height:46px;border-radius:var(--radius-xs);background:rgba(255,255,255,.04);
  border:1px solid var(--glass-line);color:var(--text-1);padding:0 16px;font-size:15px
}
.search-inner input::placeholder{color:var(--text-3)}
.search-inner input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(15,224,192,.18)}
.burger{
  width:42px;height:42px;display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  align-items:center;border-radius:var(--radius-xs);border:1px solid var(--line);background:rgba(255,255,255,.03)
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform var(--ease),opacity var(--ease)}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:1050;
  background:rgba(5,8,15,.96);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-left:1px solid var(--glass-line);
  transform:translateX(102%);transition:transform var(--ease);
  padding:26px 24px 40px;display:flex;flex-direction:column;gap:10px;overflow-y:auto
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:38px;height:38px;border-radius:var(--radius-pill);border:1px solid var(--line);color:var(--text-2);display:inline-flex;align-items:center;justify-content:center}
.mobile-drawer a.drawer-link{display:flex;align-items:center;height:56px;font-size:18px;font-weight:500;color:var(--text-1);border-bottom:1px solid var(--line)}
.mobile-drawer a.drawer-link.active{color:var(--primary)}
.drawer-search{height:48px;border-radius:var(--radius-xs);background:rgba(255,255,255,.04);border:1px solid var(--glass-line);color:var(--text-1);padding:0 16px;font-size:15px;margin:18px 0 12px}
.drawer-search::placeholder{color:var(--text-3)}
body.drawer-open{overflow:hidden}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;white-space:nowrap;transition:all var(--ease)
}
.btn-main{
  background:var(--primary);color:#04211C;
  box-shadow:0 0 0 1px rgba(15,224,192,.35),0 10px 30px -8px rgba(15,224,192,.55)
}
.btn-main:hover{color:#04211C;filter:brightness(108%);transform:translateY(-2px)}
.btn-main:active{background:var(--primary-deep);transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)
}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--primary);color:var(--text-1)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- badges / chips / tags ---------- */
.badge-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.04em;color:var(--primary);
  background:rgba(15,224,192,.12);border:1px solid rgba(15,224,192,.35)
}
.badge-hot{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.04em;color:var(--accent);
  background:rgba(255,106,61,.12);border:1px solid rgba(255,106,61,.35)
}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:10px;
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.03);border:1px solid var(--line);
  transition:all var(--ease)
}
.chip:hover,.chip.is-on{color:var(--primary);border-color:rgba(15,224,192,.45);background:rgba(15,224,192,.08)}

/* ---------- page hero / breadcrumb ---------- */
.page-hero{position:relative;padding:126px 0 30px;background:radial-gradient(1200px 520px at 12% -20%,rgba(15,224,192,.16),transparent 70%),linear-gradient(180deg,#070C17 0%,#0A0F1B 100%);overflow:hidden}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent)
}
.breadcrumb-line{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3)}
.breadcrumb-line a{color:var(--text-3)}
.breadcrumb-line a:hover{color:var(--primary)}
.breadcrumb-line .sep{color:rgba(167,182,206,.45)}
.breadcrumb-line .current{color:var(--text-2);max-width:min(520px,70vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article ---------- */
.section{padding:56px 0 72px}
.article-card{
  background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);padding:32px;
}
@media (max-width:767.98px){.article-card{padding:22px 18px}}
.article-head{display:flex;flex-direction:column;gap:16px;padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:28px}
.article-head h1{
  font-size:40px;line-height:1.2;font-weight:700;letter-spacing:-.02em;
  max-width:24em;word-break:break-word
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--text-2)}
.meta-row .dot{color:rgba(167,182,206,.5)}
.meta-row .badge-cat{margin-right:4px}

.article-body{max-width:744px;font-size:16px;line-height:28px;color:var(--text-1)}
.article-body p{margin:0 0 18px;color:var(--text-2);max-width:42em}
.article-body strong{color:var(--text-1)}
.article-body h2{
  font-size:28px;line-height:1.3;font-weight:600;color:var(--text-1);
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--primary);max-width:24em
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--text-1);margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-1);margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;color:var(--text-2)}
.article-body ul li{list-style:disc;margin-bottom:8px;line-height:1.8}
.article-body ol li{list-style:decimal;margin-bottom:8px;line-height:1.8}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-body a:hover{color:#6df0da}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;border-left:3px solid var(--primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  background:var(--glass);border-top:1px solid var(--glass-line);border-right:1px solid var(--glass-line);border-bottom:1px solid var(--glass-line);
  color:var(--text-2)
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-sm);margin:20px auto}
.article-body figcaption,.article-body .caption{
  text-align:center;font-size:13px;color:var(--text-3);margin:8px 0 22px
}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;margin:22px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden
}
.article-body th{background:rgba(15,224,192,.08);color:var(--text-1);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--text-2)}
.article-body tr:last-child td{border-bottom:0}
.article-body hr{border:0;height:1px;background:linear-gradient(90deg,transparent,rgba(15,224,192,.4),transparent);margin:32px 0}

/* inline cta */
.inline-cta{
  max-width:744px;margin:32px 0 8px;padding:20px 22px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap
}
.inline-cta h3{font-size:17px;font-weight:600;margin-bottom:6px}
.inline-cta p{font-size:14px;color:var(--text-2);line-height:1.7}
.ensure-list{display:flex;flex-direction:column;gap:10px;margin:22px 0 0}
.ensure-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2)}
.ensure-list svg{flex:0 0 auto;margin-top:4px}

/* empty state */
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;color:var(--text-2)
}
.empty-state p{color:var(--text-2);font-size:15px}

/* related */
.block-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:48px 0 18px}
.block-title h2{font-size:28px;font-weight:600}
.block-title p{font-size:14px;color:var(--text-2);margin-top:6px}
.slide-hint{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.slide-hint .bar{display:inline-block;width:34px;height:1px;background:linear-gradient(90deg,rgba(15,224,192,.1),rgba(15,224,192,.8))}
.related-track{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 16px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch
}
.related-track::-webkit-scrollbar{height:6px}
.related-track::-webkit-scrollbar-thumb{background:rgba(140,190,255,.2);border-radius:999px}
.clip-card{
  flex:0 0 260px;scroll-snap-align:start;border-radius:var(--radius-lg);overflow:hidden;
  background:var(--bg-elev);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease)
}
.clip-card:hover{transform:translateY(-4px);border-color:rgba(15,224,192,.45)}
.clip-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.clip-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.clip-card:hover .clip-thumb img{transform:scale(1.04)}
.clip-thumb .badge-hot{position:absolute;left:12px;top:12px}
.clip-body{padding:16px 18px 18px}
.clip-body h3{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:48px}
.clip-body .time{display:block;margin-top:10px;font-size:12px;color:var(--text-3)}

/* back nav */
.back-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
.back-card{
  display:flex;flex-direction:column;gap:8px;padding:20px 22px;border-radius:var(--radius-lg);
  background:var(--bg-elev);border:1px solid var(--line);transition:all var(--ease)
}
.back-card:hover{transform:translateY(-4px);border-color:rgba(15,224,192,.45)}
.back-card .dir{font-size:12px;letter-spacing:.04em;color:var(--text-3)}
.back-card .ttl{font-size:16px;font-weight:600;color:var(--text-1);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media (max-width:575.98px){.back-nav{grid-template-columns:1fr}}

/* sidebar */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px 22px;box-shadow:var(--shadow-card)}
.side-card h3{font-size:16px;font-weight:600;margin-bottom:14px}
.side-toc li{margin-bottom:10px}
.side-toc a{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:8px}
.side-toc a::before{content:"";width:5px;height:5px;border-radius:50%;background:rgba(15,224,192,.6)}
.side-toc a:hover{color:var(--primary)}
.side-news li{padding:12px 0;border-bottom:1px solid var(--line)}
.side-news li:last-child{border-bottom:0;padding-bottom:0}
.side-news a{display:block}
.side-news .t{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:14.5px;line-height:1.6;color:var(--text-1)}
.side-news a:hover .t{color:var(--primary)}
.side-news .d{display:block;margin-top:6px;font-size:12px;color:var(--text-3)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- footer ---------- */
.site-footer{background:#04070D;border-top:1px solid transparent;padding:64px 0 26px;position:relative}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(15,224,192,.45),transparent)
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text-1)}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3)
}

/* mobile buy bar */
.buy-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;display:none;
  height:64px;padding:0 16px calc(env(safe-area-inset-bottom,0px) / 2 + 8px);
  align-items:center;justify-content:space-between;gap:14px;
  background:rgba(5,8,15,.94);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-top:1px solid var(--glass-line)
}
.buy-bar .tip{font-size:13px;color:var(--text-2)}
@media (max-width:991.98px){
  .buy-bar{display:flex}
  body{padding-bottom:72px}
}
@media (max-width:991.98px){
  .article-head h1{font-size:30px;line-height:1.28}
  .article-body h2{font-size:23px}
}
@media (max-width:575.98px){
  .article-head h1{font-size:28px;line-height:1.3}
  .article-body{font-size:16px;line-height:1.75}
  .section{padding:40px 0 56px}
  .page-hero{padding:110px 0 24px}
  .inline-cta{flex-direction:column;align-items:flex-start}
  .btn-main,.btn-ghost{height:42px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg-deep:#05080F;
  --bg-base:#0A0F1B;
  --bg-elev:#101827;
  --glass:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  --glass-line:rgba(140,190,255,.14);
  --primary:#0FE0C0;
  --primary-deep:#08B99E;
  --accent:#FF6A3D;
  --grad-tech:linear-gradient(120deg,#0FE0C0 0%,#2E6BFF 55%,#7C5CFF 100%);
  --text-1:#EAF2FF;
  --text-2:#A7B6CE;
  --text-3:#6B7A93;
  --r-lg:18px;
  --r-md:14px;
  --r-pill:999px;
  --shadow-card:0 18px 44px rgba(2,7,18,.55);
  --shadow-float:0 24px 60px rgba(0,0,0,.6);
  --ease:240ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul{list-style:none;margin:0;padding:0}
::selection{background:rgba(15,224,192,.28)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{
  width:100%;
  max-width:1180px;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}
@media (min-width:1400px){.container{max-width:1240px}}
@media (max-width:575.98px){.container{padding-left:18px;padding-right:18px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:absolute;
  top:0;left:0;right:0;
  z-index:1040;
  height:76px;
  background:rgba(6,10,20,.35);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 6px 24px rgba(0,0,0,.25);
  transition:height var(--ease),background var(--ease),box-shadow var(--ease);
}
.site-header.is-stuck{
  position:fixed;
  height:64px;
  background:rgba(5,8,15,.94);
  box-shadow:0 8px 30px rgba(0,0,0,.45);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:100%}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand svg{display:block}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.01em;color:#fff;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  padding:6px 0;
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a.active{color:#fff}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(15,224,192,.85);
}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-line);
  cursor:pointer;
  transition:background var(--ease),border-color var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.1);border-color:rgba(15,224,192,.5)}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border:0;border-radius:var(--r-pill);
  background:var(--primary);color:#04211C;font-size:15px;font-weight:700;
  cursor:pointer;white-space:nowrap;
  box-shadow:0 0 0 1px rgba(15,224,192,.35),0 10px 30px -8px rgba(15,224,192,.55);
  transition:transform var(--ease),filter var(--ease),background var(--ease);
}
.btn-main:hover{filter:brightness(1.08);transform:translateY(-2px);color:#04211C}
.btn-main:active{background:var(--primary-deep);transform:translateY(1px)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);
  background:transparent;border:1px solid var(--glass-line);color:var(--text-1);
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background var(--ease),border-color var(--ease),transform var(--ease);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.menu-toggle{
  width:40px;height:40px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--glass-line);
  display:none;align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px;
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
@media (max-width:991.98px){
  .menu-toggle{display:inline-flex}
}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(2,6,14,.6);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);z-index:1080;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:1090;
  background:rgba(5,8,15,.96);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-left:1px solid var(--glass-line);
  transform:translateX(100%);
  transition:transform 300ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:22px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-pill);background:rgba(255,255,255,.06);
  border:1px solid var(--glass-line);cursor:pointer;font-size:18px;line-height:1;color:var(--text-1);
}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{
  font-size:18px;line-height:56px;color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.drawer nav a.active{color:var(--primary)}
.drawer .btn-main{margin-top:24px;width:100%}
.search-box{
  display:flex;align-items:center;gap:10px;margin-top:20px;
  background:rgba(255,255,255,.04);border:1px solid var(--glass-line);
  border-radius:var(--r-md);padding:10px 14px;
}
.search-box input{background:transparent;border:0;outline:none;width:100%;font-size:15px}
.search-box input::placeholder{color:var(--text-3)}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:152px 0 80px;
  background:var(--bg-deep);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;top:-260px;left:50%;transform:translateX(-50%);
  width:1200px;height:760px;
  background:radial-gradient(circle,rgba(15,224,192,.18),transparent 68%);
  pointer-events:none;
}
.page-hero .grid-layer{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 82%);
  mask-image:linear-gradient(180deg,#000,transparent 82%);
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb-line{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:18px;
}
.breadcrumb-line a{color:var(--text-3)}
.breadcrumb-line a:hover{color:var(--primary)}
.breadcrumb-line span.sep{color:rgba(255,255,255,.2)}
.breadcrumb-line .cur{color:var(--text-2)}
.page-hero h1{
  font-size:40px;line-height:1.2;font-weight:700;letter-spacing:-.02em;
  max-width:24em;margin-bottom:18px;
}
.page-hero .lead{
  font-size:17px;line-height:1.85;color:var(--text-2);max-width:42em;margin-bottom:26px;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 15px;border-radius:var(--r-pill);
  border:1px solid var(--glass-line);background:rgba(255,255,255,.04);
  color:var(--text-2);font-size:13px;letter-spacing:.04em;
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.chip:hover{border-color:rgba(15,224,192,.45);color:var(--text-1)}
.chip.on{border-color:rgba(15,224,192,.5);background:rgba(15,224,192,.12);color:var(--primary)}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--glass-line);box-shadow:var(--shadow-card);
}
.hero-visual img{width:100%;aspect-ratio:5/6;object-fit:cover}
.hero-visual .visual-tag{
  position:absolute;left:16px;top:16px;
  padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(4,8,16,.7);border:1px solid var(--glass-line);
  font-size:12px;letter-spacing:.04em;color:var(--text-1);
}
.hero-visual .visual-foot{
  position:absolute;left:0;right:0;bottom:0;padding:18px;
  background:linear-gradient(to top,rgba(5,8,15,.92),rgba(5,8,15,0));
  font-size:14px;color:var(--text-1);
}
@media (max-width:991.98px){
  .page-hero{padding:132px 0 64px}
  .page-hero h1{font-size:32px}
  .hero-visual{margin-top:8px}
  .hero-visual img{aspect-ratio:16/11}
}
@media (max-width:575.98px){
  .page-hero{padding:118px 0 52px}
  .page-hero h1{font-size:28px;line-height:1.29}
  .page-hero .lead{font-size:16px}
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative}
@media (max-width:991.98px){.section{padding:72px 0}}
@media (max-width:575.98px){.section{padding:56px 0}}
.section-head{max-width:48em;margin-bottom:40px}
.section-head h2{
  font-size:28px;line-height:1.3;font-weight:600;letter-spacing:-.01em;margin-bottom:12px;
}
.section-head p{color:var(--text-2);font-size:16px;line-height:1.8}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);display:inline-block}
.grad-underline{
  background-image:var(--grad-tech);
  background-repeat:no-repeat;background-size:100% 3px;background-position:0 100%;
  padding-bottom:4px;
}
.divider-grad{
  height:1px;border:0;
  background:linear-gradient(90deg,transparent,rgba(15,224,192,.4),transparent);
  margin:0;
}

/* ---------- 卡片栅格 ---------- */
.card-info{
  display:flex;flex-direction:column;height:100%;
  background:var(--bg-elev);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.card-info:hover{transform:translateY(-4px);border-color:rgba(15,224,192,.45);box-shadow:var(--shadow-card)}
.card-thumb{overflow:hidden;aspect-ratio:16/9;background:#0c1320}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.card-info:hover .card-thumb img{transform:scale(1.04)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge-chip{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;
  border:1px solid rgba(15,224,192,.35);
  background:rgba(15,224,192,.12);
  color:var(--primary);
  align-self:flex-start;
}
.badge-chip.hot{
  border-color:rgba(255,106,61,.4);
  background:rgba(255,106,61,.13);
  color:var(--accent);
}
.badge-chip.neutral{
  border-color:var(--glass-line);
  background:rgba(255,255,255,.05);
  color:var(--text-2);
}
.card-body h3{font-size:18px;line-height:1.5;font-weight:600}
.card-body p{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.card-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- 图文双栏 ---------- */
.split-block{align-items:center}
.split-copy h2{font-size:28px;line-height:1.32;font-weight:600;letter-spacing:-.01em;margin-bottom:16px}
.split-copy p{color:var(--text-2);font-size:16px;line-height:1.85;margin-bottom:16px}
.tick-list{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.tick-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.tick-list li b{color:var(--text-1);font-weight:600}
.tick-list .tick{
  flex-shrink:0;width:20px;height:20px;margin-top:4px;border-radius:var(--r-pill);
  border:1px solid rgba(15,224,192,.5);background:rgba(15,224,192,.12);
  display:inline-flex;align-items:center;justify-content:center;
}
.split-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-line);box-shadow:var(--shadow-card)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
@media (max-width:991.98px){
  .split-copy h2{font-size:24px}
  .split-media{margin-top:28px}
}

/* ---------- 三步核对 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-card{
  position:relative;padding:26px 24px;
  background:var(--bg-elev);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r-lg);
  transition:transform var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(15,224,192,.4)}
.step-num{
  font-size:32px;font-weight:700;line-height:1;color:transparent;
  -webkit-text-stroke:1px rgba(15,224,192,.75);
  margin-bottom:16px;letter-spacing:.02em;
}
.step-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.step-card p{font-size:14px;line-height:1.75;color:var(--text-2)}
@media (max-width:991.98px){.steps{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq .accordion-item{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-lg) !important;
  margin-bottom:14px;overflow:hidden;
}
.faq .accordion-button{
  background:transparent;color:var(--text-1);
  font-size:17px;font-weight:600;line-height:1.6;
  padding:20px 22px;box-shadow:none;
}
.faq .accordion-button:not(.collapsed){
  color:var(--primary);background:rgba(15,224,192,.07);
}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:-2px}
.faq .accordion-button::after{
  content:"+";background-image:none;
  width:24px;height:24px;font-size:20px;font-weight:400;line-height:1;
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  transform:none;transition:transform var(--ease),color var(--ease);
}
.faq .accordion-button:not(.collapsed)::after{content:"–";transform:rotate(180deg)}
.faq .accordion-body{padding:0 22px 22px;color:var(--text-2);font-size:16px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  background:
    linear-gradient(150deg,rgba(15,224,192,.13),rgba(124,92,255,.1) 58%,rgba(255,255,255,0) 100%),
    var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.14);
  padding:44px;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.cta-band h2{font-size:26px;line-height:1.35;font-weight:600;margin-bottom:12px}
.cta-band p{color:var(--text-2);font-size:16px;line-height:1.8;max-width:40em}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-top:20px}
.cta-points li{display:flex;gap:10px;align-items:center;font-size:15px;color:var(--text-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
@media (max-width:767.98px){
  .cta-band{padding:28px 22px}
  .cta-band h2{font-size:22px}
  .cta-actions .btn-main,.cta-actions .btn-ghost{flex:1 1 auto}
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:#04070D;padding:64px 0 0;margin-top:24px;
  border-top:1px solid rgba(255,255,255,.08);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(15,224,192,.45),transparent);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand span{color:#fff}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.footer-col p{color:var(--text-3);font-size:14px;line-height:1.8;margin-top:14px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(255,255,255,.08);
  color:var(--text-3);font-size:12.5px;
}
@media (max-width:991.98px){.footer-bottom{margin-top:32px}}

/* ---------- 移动端底部条 ---------- */
.buy-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;
  display:none;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 18px calc(10px + env(safe-area-inset-bottom));
  background:rgba(5,8,15,.96);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid rgba(255,255,255,.08);
}
.buy-bar .buy-text{font-size:13px;color:var(--text-2);line-height:1.4}
.buy-bar .btn-main{padding:10px 20px;font-size:14px}
@media (max-width:991.98px){
  .buy-bar{display:flex}
  body{padding-bottom:74px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-deep:#05080F;
  --bg-base:#0A0F1B;
  --bg-elev:#101827;
  --glass:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  --glass-line:rgba(140,190,255,.14);
  --primary:#0FE0C0;
  --primary-deep:#08B99E;
  --accent:#FF6A3D;
  --grad-tech:linear-gradient(120deg,#0FE0C0 0%,#2E6BFF 55%,#7C5CFF 100%);
  --text-1:#EAF2FF;
  --text-2:#A7B6CE;
  --text-3:#6B7A93;
  --success:#3DDC97;
  --warning:#FFB020;
  --line:rgba(255,255,255,.08);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-card:0 18px 44px rgba(2,7,18,.55);
  --shadow-float:0 24px 60px rgba(0,0,0,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-1);text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;color:var(--text-1);}
h1{font-size:clamp(28px,4.2vw,40px);line-height:1.2;font-weight:700;max-width:24em;}
h2{font-size:clamp(22px,2.6vw,28px);line-height:1.28;font-weight:600;}
h3{font-size:clamp(18px,1.9vw,20px);line-height:1.35;font-weight:600;}
p{margin:0 0 16px;color:var(--text-2);max-width:42em;}
p:last-child{margin-bottom:0;}
ul{padding-left:0;list-style:none;margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media(min-width:1400px){.container{max-width:1240px;}}
.section{padding:96px 0;}
.section-head{margin-bottom:36px;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--primary);text-transform:uppercase;margin-bottom:12px;}
.section-head .eyebrow::before{content:"";width:18px;height:2px;background:var(--primary);border-radius:2px;}
.section-desc{max-width:42em;color:var(--text-2);font-size:15px;line-height:1.8;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.text-link{color:var(--primary);font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:color .24s var(--ease);}
.text-link:hover{color:var(--text-1);text-decoration:underline;text-underline-offset:4px;}
.divider-grad{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(15,224,192,.4),transparent);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(6,10,20,.35);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 6px 24px rgba(0,0,0,.25);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(5,8,15,.94);box-shadow:0 8px 30px rgba(0,0,0,.45);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;transition:height .24s var(--ease);}
.site-header.is-scrolled .nav-inner{height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo span{font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:-.01em;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{position:relative;color:var(--text-2);font-size:15px;font-weight:500;padding:8px 0;transition:color .24s var(--ease);white-space:nowrap;}
.nav-links a:hover{color:var(--text-1);}
.nav-links a.active{color:var(--text-1);}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(15,224,192,.85);}
.nav-right{display:flex;align-items:center;gap:12px;}
.icon-btn{width:40px;height:40px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--glass-line);background:rgba(255,255,255,.04);color:var(--text-2);cursor:pointer;transition:all .24s var(--ease);}
.icon-btn:hover{color:var(--primary);border-color:rgba(15,224,192,.45);}
.btn-main{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;border:0;background:var(--primary);color:#04211C;font-size:15px;font-weight:700;letter-spacing:.01em;cursor:pointer;box-shadow:0 0 0 1px rgba(15,224,192,.35),0 10px 30px -8px rgba(15,224,192,.55);transition:transform .24s var(--ease),filter .24s var(--ease),background .24s var(--ease);}
.btn-main:hover{filter:brightness(1.08);transform:translateY(-2px);color:#04211C;}
.btn-main:active{transform:translateY(1px);background:var(--primary-deep);}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:999px;background:transparent;border:1px solid var(--glass-line);color:var(--text-1);font-size:15px;font-weight:600;cursor:pointer;transition:all .24s var(--ease);}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--primary);color:var(--text-1);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.nav-cta{padding:10px 20px;font-size:14px;}
.hamburger{display:none;}
.search-pop{position:absolute;top:calc(100% + 10px);right:24px;width:min(420px,calc(100% - 48px));padding:14px;border-radius:var(--r-lg);background:rgba(8,13,24,.96);border:1px solid var(--glass-line);box-shadow:var(--shadow-float);opacity:0;visibility:hidden;transform:translateY(-8px);transition:all .24s var(--ease);}
.search-pop.open{opacity:1;visibility:visible;transform:translateY(0);}
.search-pop form{display:flex;gap:10px;}
.search-pop input{flex:1;background:rgba(255,255,255,.04);border:1px solid var(--glass-line);border-radius:12px;padding:11px 14px;color:var(--text-1);}
.search-pop input::placeholder{color:var(--text-3);}
.search-pop input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(15,224,192,.18);}
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,12,.6);opacity:0;visibility:hidden;transition:all .24s var(--ease);z-index:1040;}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(360px,88vw);z-index:1050;background:rgba(5,8,15,.96);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-left:1px solid var(--glass-line);transform:translateX(100%);transition:transform .3s var(--ease);display:flex;flex-direction:column;padding:22px;overflow-y:auto;}
.drawer.open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-links{display:flex;flex-direction:column;margin-bottom:24px;}
.drawer-links a{font-size:18px;line-height:56px;color:var(--text-2);border-bottom:1px solid var(--line);transition:color .24s var(--ease);}
.drawer-links a.active,.drawer-links a:hover{color:var(--primary);}
.drawer .search-box{display:flex;gap:10px;margin-bottom:20px;}
.drawer .search-box input{flex:1;background:rgba(255,255,255,.04);border:1px solid var(--glass-line);border-radius:12px;padding:12px 14px;color:var(--text-1);}
.drawer .search-box input:focus{outline:none;border-color:var(--primary);}

/* ---------- page hero ---------- */
.page-hero{position:relative;padding:152px 0 76px;overflow:hidden;background:var(--bg-deep);}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(ellipse at 30% 0%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 30% 0%,#000 0%,transparent 72%);
}
.page-hero::after{
  content:"";position:absolute;top:-360px;left:42%;transform:translateX(-50%);
  width:1200px;height:900px;pointer-events:none;
  background:radial-gradient(circle,rgba(15,224,192,.18),transparent 65%);
}
.page-hero .container{position:relative;z-index:1;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap;}
.crumb a{color:var(--text-3);transition:color .24s var(--ease);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:rgba(255,255,255,.2);}
.crumb .current{color:var(--text-2);}
.hero-lead{font-size:16px;line-height:1.85;color:var(--text-2);max-width:42em;margin-top:18px;}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;font-size:12px;letter-spacing:.04em;color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--glass-line);}
.chip.hot{color:var(--accent);border-color:rgba(255,106,61,.4);background:rgba(255,106,61,.1);}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-line);box-shadow:var(--shadow-card);aspect-ratio:4/3;}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual .glow{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.1),rgba(5,8,15,.75));}
.hero-visual .badge-float{position:absolute;left:18px;bottom:18px;padding:8px 14px;border-radius:999px;font-size:12px;letter-spacing:.04em;color:var(--text-1);background:rgba(5,8,15,.6);border:1px solid var(--glass-line);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

/* ---------- glass ---------- */
.glass{background:var(--glass);border:1px solid var(--glass-line);-webkit-backdrop-filter:blur(16px) saturate(150%);backdrop-filter:blur(16px) saturate(150%);box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.14);border-radius:var(--r-lg);}

/* ---------- clip track ---------- */
.track-wrap{position:relative;}
.track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 24px 24px;margin:0 -24px;scrollbar-width:none;-ms-overflow-style:none;}
.track::-webkit-scrollbar{display:none;}
.clip-card{position:relative;flex:0 0 240px;aspect-ratio:9/16;border-radius:var(--r-lg);overflow:hidden;scroll-snap-align:start;border:1px solid var(--glass-line);box-shadow:var(--shadow-card);transition:transform .24s var(--ease),border-color .24s var(--ease);background:var(--bg-elev);}
.clip-card:hover{transform:translateY(-4px);border-color:rgba(15,224,192,.45);}
.clip-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.clip-card:hover img{transform:scale(1.04);}
.clip-card .shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.35) 0%,rgba(5,8,15,.05) 38%,rgba(5,8,15,.88) 100%);}
.clip-time{position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:999px;font-size:12px;color:var(--accent);background:rgba(5,8,15,.62);border:1px solid rgba(255,106,61,.35);letter-spacing:.04em;}
.clip-hot{position:absolute;right:12px;top:12px;padding:4px 10px;border-radius:999px;font-size:12px;color:var(--primary);background:rgba(15,224,192,.12);border:1px solid rgba(15,224,192,.45);letter-spacing:.04em;}
.clip-body{position:absolute;left:0;right:0;bottom:0;padding:16px;}
.clip-body h3{font-size:16px;line-height:1.45;color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clip-body .meta{font-size:12px;color:var(--text-2);margin-top:8px;}
.track-hint{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-top:4px;}
.track-hint .line{width:40px;height:1px;background:linear-gradient(90deg,rgba(15,224,192,.6),transparent);}

/* ---------- steps ---------- */
.steps{border-radius:var(--r-lg);border:1px solid var(--line);background:var(--bg-elev);box-shadow:var(--shadow-card);overflow:hidden;}
.step{display:flex;align-items:center;gap:20px;padding:18px 22px;border-bottom:1px solid var(--line);transition:background .24s var(--ease);}
.step:last-child{border-bottom:0;}
.step:hover{background:rgba(255,255,255,.04);}
.step:hover .step-num{text-shadow:0 0 18px rgba(15,224,192,.6);}
.step-num{flex:0 0 54px;font-size:30px;font-weight:700;color:var(--primary);line-height:1;letter-spacing:-.02em;}
.step-thumb{flex:0 0 96px;width:96px;height:96px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--glass-line);}
.step-thumb img{width:100%;height:100%;object-fit:cover;}
.step-body{flex:1 1 auto;min-width:0;}
.step-body h3{font-size:18px;margin-bottom:8px;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{font-size:12px;letter-spacing:.04em;padding:4px 10px;border-radius:999px;color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line);}
.tag.green{color:var(--primary);border-color:rgba(15,224,192,.35);background:rgba(15,224,192,.1);}
.step-cta{flex:0 0 auto;}
.step-side{position:sticky;top:104px;padding:24px;}
.step-side h3{font-size:19px;margin-bottom:12px;}
.step-side ul{display:flex;flex-direction:column;gap:12px;margin:18px 0 22px;}
.step-side li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);line-height:1.7;}
.step-side li svg{flex:0 0 18px;margin-top:3px;}
.side-note{font-size:12px;color:var(--text-3);line-height:1.7;}

/* ---------- band ---------- */
.band{margin-top:8px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-deep);padding:44px 0;}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.band-item{padding:0 26px;border-right:1px solid var(--line);}
.band-item:last-child{border-right:0;}
.band-item .icon{display:inline-flex;width:36px;height:36px;border-radius:10px;align-items:center;justify-content:center;background:rgba(15,224,192,.1);border:1px solid rgba(15,224,192,.3);margin-bottom:14px;color:var(--primary);}
.band-item h3{font-size:17px;margin-bottom:6px;}
.band-item p{font-size:14px;line-height:1.7;color:var(--text-2);}

/* ---------- bubbles ---------- */
.bubble{flex:0 0 300px;padding:22px;border-radius:var(--r-lg);scroll-snap-align:start;}
.bubble-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{width:40px;height:40px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;color:#04211C;background:var(--grad-tech);flex-shrink:0;}
.bubble-name{font-size:14px;font-weight:600;color:var(--text-1);}
.bubble-time{font-size:12px;color:var(--text-3);}
.stars{display:flex;gap:3px;margin-bottom:10px;color:var(--accent);font-size:13px;letter-spacing:2px;}
.bubble p{font-size:15px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- cta + form ---------- */
.cta-card{padding:40px;display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:start;}
.cta-points{display:flex;flex-direction:column;gap:12px;margin:24px 0 28px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.cta-points li svg{flex:0 0 20px;margin-top:3px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.field-label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.field{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--glass-line);border-radius:var(--r-sm);padding:13px 16px;color:var(--text-1);font-size:15px;transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);}
.field::placeholder{color:var(--text-3);}
.field:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(15,224,192,.18);background:rgba(255,255,255,.06);}
textarea.field{min-height:116px;resize:vertical;}
.form-row{margin-bottom:18px;}
.privacy-note{font-size:12px;color:var(--text-3);line-height:1.7;margin-top:14px;}

/* ---------- faq ---------- */
.accordion-item{background:var(--bg-elev);border:1px solid var(--line);border-radius:16px;margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-card);}
.accordion-button{background:transparent;color:var(--text-1);font-size:17px;font-weight:600;padding:20px 22px;box-shadow:none;border-radius:16px;transition:background .24s var(--ease),color .24s var(--ease);}
.accordion-button:not(.collapsed){background:rgba(15,224,192,.07);color:var(--text-1);box-shadow:inset 3px 0 0 var(--primary);}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{width:14px;height:14px;background-image:none;border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(45deg);margin-left:auto;flex-shrink:0;transition:transform .24s var(--ease);}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);}
.accordion-body{padding:0 22px 22px;color:var(--text-2);font-size:16px;line-height:1.85;}

/* ---------- footer ---------- */
.site-footer{background:#04070D;border-top:1px solid transparent;border-image:linear-gradient(90deg,transparent,rgba(15,224,192,.4),transparent) 1;padding:64px 0 26px;margin-top:0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand span{font-size:17px;font-weight:700;color:var(--text-1);}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-1);margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .24s var(--ease);}
.footer-col a:hover{color:var(--primary);}
.footer-col p{font-size:13px;line-height:1.8;color:var(--text-3);max-width:36em;}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12px;color:var(--text-3);}

/* ---------- mobile bar ---------- */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:1020;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:10px 18px calc(10px + env(safe-area-inset-bottom,0px));background:rgba(5,8,15,.95);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-top:1px solid var(--glass-line);}
.mobile-bar .txt{font-size:13px;color:var(--text-2);line-height:1.5;}
.mobile-bar .txt strong{display:block;color:var(--text-1);font-size:14px;}

/* ---------- responsive ---------- */
@media(max-width:1199.98px){
  .step-side{position:static;margin-top:24px;}
}
@media(max-width:991.98px){
  body{padding-bottom:76px;}
  .section{padding:72px 0;}
  .site-header .nav-cta,.site-header .icon-btn.search-btn{display:none;}
  .hamburger{display:inline-flex;}
  .page-hero{padding:126px 0 60px;}
  .hero-visual{aspect-ratio:16/10;margin-top:34px;}
  .cta-card{grid-template-columns:1fr;gap:28px;padding:28px;}
  .band-grid{grid-template-columns:repeat(2,1fr);gap:26px 0;}
  .band-item:nth-child(2){border-right:0;}
  .band-item:nth-child(odd){padding-left:0;}
  .track{padding-left:18px;padding-right:18px;margin-left:-18px;margin-right:-18px;}
}
@media(max-width:767.98px){
  .section{padding:56px 0;}
  .container{padding-left:18px;padding-right:18px;}
  .clip-card{flex:0 0 46vw;}
  .step{flex-wrap:wrap;padding:16px 18px;gap:14px;}
  .step-thumb{flex:0 0 72px;width:72px;height:72px;}
  .step-cta{width:100%;}
  .step-cta .btn-ghost{width:100%;}
  .bubble{flex:0 0 82vw;}
  .footer-bottom{flex-direction:column;}
}
@media(max-width:575.98px){
  .clip-card{flex:0 0 78vw;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .band-grid{grid-template-columns:1fr;}
  .band-item{border-right:0;padding:0 0 22px;border-bottom:1px solid var(--line);}
  .band-item:last-child{border-bottom:0;padding-bottom:0;}
  .step-num{flex:0 0 40px;font-size:24px;}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .clip-card:hover,.btn-main:hover{transform:none;}
}