/* roulang page: index */
:root{
  --bg:#120B1F;
  --panel:#1B1230;
  --raised:#241A3D;
  --line:rgba(255,255,255,.08);
  --cyan:#22E3B8;
  --coral:#FF6B3D;
  --violet:#A56BFF;
  --text:#F2EEFF;
  --text2:#B6AECB;
  --text3:#7E7794;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --shadow-card:0 20px 48px -24px rgba(0,0,0,.75);
  --shadow-cyan:0 16px 36px -18px rgba(34,227,184,.45);
  --shadow-coral:0 16px 36px -18px rgba(255,107,61,.4);
  --container:1200px;
  --page-pad:96px;
  --font:"HarmonyOS Sans SC","PingFang SC","MiSans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg);
  background-image:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);
  background-size:52px 52px;
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--cyan);}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.28;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
.container-wide{width:100%;max-width:1320px;margin:0 auto;padding:0 20px;}
.section{padding:var(--page-pad) 0;position:relative;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--cyan);text-transform:uppercase;margin-bottom:14px;}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--cyan);border-radius:2px;}
.section-head h2{font-size:clamp(24px,3.4vw,34px);margin-bottom:14px;}
.section-head p{color:var(--text2);font-size:16px;}

/* 顶部信息条 */
.topbar{
  background:#0C0716;
  border-bottom:1px solid var(--line);
  font-size:14px;
  color:var(--text3);
}
.topbar-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:10px;white-space:nowrap;}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
.topbar-mid{color:var(--text2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar-right{display:flex;align-items:center;gap:16px;white-space:nowrap;}
.topbar-right a{color:var(--text2);font-size:13px;}
.topbar-right a:hover{color:var(--cyan);}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:1030;}
.mainnav{
  background:rgba(18,11,31,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  padding:0;
}
.mainnav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
  display:flex;align-items:center;justify-content:center;
  color:#0C0716;font-size:16px;
  box-shadow:var(--shadow-cyan);
  flex:0 0 auto;
}
.brand-text small{display:block;font-size:11px;font-weight:500;color:var(--text3);letter-spacing:.06em;margin-top:-2px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;
  display:block;
  padding:24px 14px;
  font-size:15px;
  color:var(--text2);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;
  background:var(--cyan);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--text);font-weight:700;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--cyan);color:#07160F;font-weight:700;font-size:15px;
  padding:11px 24px;border-radius:999px;border:0;
  box-shadow:var(--shadow-cyan);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
  cursor:pointer;white-space:nowrap;
}
.btn-neon:hover{filter:brightness(1.08);transform:translateY(-2px);color:#07160F;box-shadow:0 20px 42px -16px rgba(34,227,184,.6);}
.btn-neon:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--cyan);font-weight:700;font-size:15px;
  padding:10px 22px;border-radius:999px;border:1px solid rgba(34,227,184,.5);
  transition:background .2s ease,transform .2s ease,border-color .2s ease;
  cursor:pointer;white-space:nowrap;
}
.btn-ghost:hover{background:rgba(34,227,184,.1);border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px);}
.btn-coral{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--coral);color:#1A0A03;font-weight:700;font-size:15px;
  padding:11px 24px;border-radius:999px;border:0;
  box-shadow:var(--shadow-coral);
  transition:transform .2s ease,filter .2s ease;cursor:pointer;white-space:nowrap;
}
.btn-coral:hover{filter:brightness(1.08);transform:translateY(-2px);color:#1A0A03;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-weight:600;font-size:15px;border-bottom:1px solid transparent;transition:border-color .2s ease,gap .2s ease;}
.btn-text:hover{border-color:var(--cyan);gap:10px;color:var(--cyan);}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--panel);color:var(--text);align-items:center;justify-content:center;font-size:17px;cursor:pointer;
}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);}
.mobile-drawer{background:#150D26;color:var(--text);border-left:1px solid var(--line);}
.mobile-drawer .offcanvas-title{font-weight:800;font-size:17px;}
.mobile-drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.6);}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 4px;border-bottom:1px solid var(--line);
  font-size:16px;color:var(--text2);font-weight:600;
}
.drawer-links a.active{color:var(--cyan);}
.drawer-links a i{font-size:12px;color:var(--text3);}

/* Hero */
.hero{position:relative;padding:72px 0 88px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(18,11,31,.72),rgba(18,11,31,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.55;z-index:0;
}
.hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-160px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(165,107,255,.28),transparent 68%);z-index:0;
}
.hero .container-x{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:5fr 6fr;gap:48px;align-items:center;}
.hero-copy h1{font-size:clamp(28px,5vw,50px);margin-bottom:18px;}
.hero-copy h1 em{font-style:normal;color:var(--cyan);}
.hero-sub{font-size:clamp(16px,1.6vw,19px);color:var(--text2);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.trust-badges{display:flex;flex-wrap:wrap;gap:10px;}
.trust-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--panel);border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;font-size:13px;color:var(--text2);
}
.trust-badge i{color:var(--cyan);font-size:12px;}

.hero-visual{position:relative;}
.stage{position:relative;height:580px;}
.phone-card{
  position:absolute;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease;
}
.phone-card:hover{transform:translateY(-4px);border-color:rgba(34,227,184,.35);}
.phone-card.main{width:300px;left:50%;transform:translateX(-50%);top:0;z-index:3;}
.phone-card.main:hover{transform:translateX(-50%) translateY(-4px);}
.phone-card.side-a{width:170px;left:0;top:118px;z-index:2;}
.phone-card.side-b{width:158px;right:4px;top:300px;z-index:2;}
.phone-media{position:relative;aspect-ratio:9/13;overflow:hidden;background:#0F0A1C;}
.phone-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.phone-card:hover .phone-media img{transform:scale(1.04);}
.phone-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(10,6,20,.9));}
.pill-time,.play-dot{
  position:absolute;z-index:2;
}
.pill-time{
  right:10px;top:10px;background:rgba(12,7,22,.78);border:1px solid var(--line);
  border-radius:999px;padding:3px 10px;font-size:12px;color:var(--text2);
}
.play-dot{
  left:50%;top:44%;transform:translate(-50%,-50%);
  width:46px;height:46px;border-radius:50%;
  background:rgba(34,227,184,.92);color:#07160F;
  display:flex;align-items:center;justify-content:center;font-size:15px;
  box-shadow:0 0 0 8px rgba(34,227,184,.16);
}
.phone-card.side-a .play-dot,.phone-card.side-b .play-dot{width:34px;height:34px;font-size:12px;}
.phone-cap{padding:12px 14px 16px;position:relative;z-index:2;margin-top:-42px;}
.phone-cap h3{font-size:15px;margin-bottom:8px;line-height:1.45;}
.phone-card.main .phone-cap h3{font-size:16px;}
.phone-cap p{font-size:12px;color:var(--text3);margin:0 0 10px;}
.bar{height:4px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden;}
.bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--cyan),var(--violet));}

/* 横滑卡 */
.snap-row{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.snap-row::-webkit-scrollbar{height:6px;}
.snap-row::-webkit-scrollbar-track{background:rgba(255,255,255,.04);border-radius:999px;}
.snap-row::-webkit-scrollbar-thumb{background:rgba(34,227,184,.4);border-radius:999px;}
.snap-card{
  scroll-snap-align:start;flex:0 0 auto;width:238px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease;
}
.snap-card:hover{transform:translateY(-4px);border-color:rgba(34,227,184,.35);}
.snap-media{position:relative;aspect-ratio:9/14;overflow:hidden;background:#0F0A1C;}
.snap-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.snap-card:hover .snap-media img{transform:scale(1.05);}
.snap-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(10,6,20,.92));}
.badge-cat{
  position:absolute;left:10px;top:10px;z-index:2;
  background:rgba(34,227,184,.14);border:1px solid rgba(34,227,184,.4);
  color:var(--cyan);font-size:12px;font-weight:700;border-radius:999px;padding:3px 10px;
}
.snap-body{padding:14px 16px 18px;}
.snap-body h3{font-size:16px;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.snap-body p{font-size:13px;color:var(--text3);margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.snap-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text3);}
.snap-foot a{color:var(--cyan);font-weight:600;}

/* 种草清单 */
.check-list{display:grid;gap:18px;}
.check-item{
  display:grid;grid-template-columns:88px 1fr;gap:22px;align-items:start;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;transition:border-color .25s ease,transform .25s ease;
}
.check-item:hover{border-color:rgba(34,227,184,.35);transform:translateY(-3px);}
.check-num{
  font-size:40px;font-weight:800;line-height:1;color:transparent;
  -webkit-text-stroke:1.5px rgba(34,227,184,.65);
  text-shadow:0 0 28px rgba(34,227,184,.25);
}
.check-body h3{font-size:19px;margin-bottom:8px;}
.check-body p{color:var(--text2);font-size:15px;margin:0 0 12px;}
.check-body a{font-size:14px;color:var(--cyan);font-weight:600;display:inline-flex;align-items:center;gap:6px;}

/* 跑马灯 */
.marquee-wrap{display:grid;gap:16px;overflow:hidden;padding:8px 0 4px;}
.marquee{display:flex;gap:16px;width:max-content;animation:slide-left 42s linear infinite;}
.marquee.reverse{animation-direction:reverse;}
.marquee-wrap:hover .marquee{animation-play-state:paused;}
@keyframes slide-left{from{transform:translateX(0);}to{transform:translateX(-50%);}}
.quote-card{
  width:300px;flex:0 0 auto;
  background:var(--raised);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;
}
.quote-top{display:flex;align-items:center;gap:12px;margin-bottom:10px;}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#0C0716;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
}
.quote-name{font-size:14px;font-weight:700;}
.stars{color:var(--coral);font-size:12px;letter-spacing:2px;}
.quote-card p{font-size:14px;color:var(--text2);margin:0;}

/* CTA 带 */
.cta-band{
  position:relative;border-radius:24px;overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(34,227,184,.9),rgba(255,107,61,.88));
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.12;mix-blend-mode:overlay;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(10,6,20,.12) 0 12px,transparent 12px 26px);
  opacity:.5;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{font-size:clamp(22px,3vw,30px);color:#0B0714;margin-bottom:10px;}
.cta-band p{color:rgba(11,7,20,.78);font-size:15px;margin:0;max-width:520px;}
.cta-band .btn-dark-solid{
  background:#0C0716;color:var(--text);border:0;border-radius:999px;
  padding:13px 28px;font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:8px;
  transition:transform .2s ease,filter .2s ease;cursor:pointer;white-space:nowrap;
}
.cta-band .btn-dark-solid:hover{transform:translateY(-2px);filter:brightness(1.15);color:var(--text);}

/* 最新信息列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow-card);transition:transform .28s ease,border-color .28s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(34,227,184,.35);}
.news-thumb{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#0F0A1C;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-card:hover .news-thumb img{transform:scale(1.05);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:18px;margin-bottom:10px;}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--cyan);}
.news-body p{font-size:14px;color:var(--text2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 16px;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text3);}
.meta-link{color:var(--cyan);font-weight:600;}
.news-empty{
  grid-column:1/-1;text-align:center;padding:64px 24px;
  background:var(--panel);border:1px dashed var(--line);border-radius:var(--r-card);
}
.news-empty i{font-size:30px;color:var(--text3);margin-bottom:14px;display:block;}
.news-empty p{color:var(--text2);margin-bottom:18px;}

/* 数据信任条 */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:36px 32px;
}
.stat-item{text-align:center;border-right:1px solid var(--line);padding:6px 12px;}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-size:clamp(26px,3.4vw,38px);font-weight:800;color:var(--cyan);
  text-shadow:0 0 24px rgba(34,227,184,.35);line-height:1.1;margin-bottom:8px;
}
.stat-item span{font-size:14px;color:var(--text2);}

/* FAQ */
.faq-acc .accordion-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card)!important;
  margin-bottom:14px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:var(--panel);color:var(--text);font-weight:700;font-size:17px;
  padding:20px 24px;box-shadow:none;border:0;
}
.faq-acc .accordion-button:not(.collapsed){
  background:var(--raised);color:var(--cyan);
  border-left:3px solid var(--cyan);
}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none;}
.faq-acc .accordion-button::after{
  background-image:none;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  color:var(--cyan);font-size:14px;transition:transform .25s ease;
  display:flex;align-items:center;justify-content:center;width:26px;height:26px;
  border:1px solid rgba(34,227,184,.4);border-radius:8px;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"\f068";transform:rotate(180deg);}
.faq-acc .accordion-body{color:var(--text2);font-size:15px;padding:4px 24px 24px;line-height:1.8;}

/* 表单 */
.contact-wrap{
  display:grid;grid-template-columns:1fr 1.1fr;gap:44px;align-items:start;
  background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:48px;
}
.contact-info h2{font-size:clamp(24px,3.2vw,32px);margin-bottom:16px;}
.contact-info p{color:var(--text2);font-size:15px;}
.contact-points{margin-top:26px;display:grid;gap:14px;}
.contact-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text2);}
.contact-points i{color:var(--cyan);margin-top:5px;}
.form-grid{display:grid;gap:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--text2);}
.field input,.field select,.field textarea{
  width:100%;background:#150D26;border:1px solid var(--line);border-radius:var(--r-input);
  padding:13px 16px;color:var(--text);font-size:15px;font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 4px rgba(34,227,184,.12);
}
.field textarea{min-height:112px;resize:vertical;}
.field select option{background:#150D26;color:var(--text);}
.field.error input,.field.error select,.field.error textarea{border-color:var(--coral);}
.field .err-msg{display:none;font-size:13px;color:var(--coral);margin-top:6px;}
.field.error .err-msg{display:block;}
.form-note{font-size:13px;color:var(--text3);}
.form-ok{
  display:none;align-items:center;gap:10px;font-size:14px;color:var(--cyan);
  background:rgba(34,227,184,.08);border:1px solid rgba(34,227,184,.3);
  border-radius:var(--r-input);padding:12px 16px;
}
.form-ok.show{display:flex;}

/* 页脚 */
.site-footer{margin-top:20px;background:#0C0716;border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text2);max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text);}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:var(--text2);}
.footer-col a:hover{color:var(--cyan);}
.footer-contact li{font-size:14px;color:var(--text2);display:flex;gap:10px;align-items:flex-start;margin-bottom:11px;}
.footer-contact i{color:var(--cyan);margin-top:5px;font-size:12px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text3);
}
.footer-bottom a{color:var(--text3);}
.footer-bottom a:hover{color:var(--cyan);}

/* 吸底 CTA + 返回顶部 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;display:none;
  background:rgba(12,7,22,.96);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);padding:10px 16px;
  align-items:center;justify-content:space-between;gap:12px;
}
.mobile-bar span{font-size:13px;color:var(--text2);}
.back-top{
  position:fixed;right:22px;bottom:26px;z-index:1035;
  width:46px;height:46px;border-radius:14px;border:1px solid var(--line);
  background:var(--raised);color:var(--cyan);font-size:16px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-card);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}

/* 响应式 */
@media (max-width:1399.98px){
  .container-wide{max-width:1200px;}
}
@media (max-width:1199.98px){
  :root{--page-pad:80px;}
  .hero-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .phone-card.main{width:262px;}
  .phone-card.side-a{width:148px;top:120px;}
  .phone-card.side-b{width:140px;top:300px;}
  .stage{height:520px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:991.98px){
  :root{--page-pad:72px;}
  .nav-links,.nav-cta .btn-neon{display:none;}
  .nav-burger{display:flex;}
  .mainnav-inner{height:64px;}
  .hero{padding:52px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .stage{height:auto;display:flex;flex-wrap:wrap;gap:18px;align-items:flex-end;justify-content:center;}
  .phone-card{position:static;transform:none!important;}
  .phone-card.main:hover{transform:translateY(-4px);}
  .phone-card.main{width:min(280px,70vw);}
  .phone-card.side-a,.phone-card.side-b{width:min(168px,40vw);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .stat-bar{grid-template-columns:repeat(2,1fr);gap:26px;}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item{border-right:0;}
  .contact-wrap{grid-template-columns:1fr;padding:34px 26px;gap:30px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:38px 30px;}
  .check-item{grid-template-columns:64px 1fr;padding:22px 22px;}
  .check-num{font-size:32px;}
}
@media (max-width:767.98px){
  :root{--page-pad:56px;}
  body{font-size:16px;}
  .topbar-mid{display:none;}
  .section-head{margin-bottom:32px;}
  .snap-card{width:200px;}
  .quote-card{width:262px;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .site-footer{padding-top:48px;}
  .stat-bar{padding:26px 20px;}
  .back-top{bottom:88px;right:16px;}
}
@media (max-width:575.98px){
  .brand-text small{display:none;}
  .hero-actions{gap:10px;}
  .hero-actions .btn-neon,.hero-actions .btn-ghost{width:100%;}
  .stage{gap:12px;}
  .phone-card.main{width:min(260px,80vw);}
  .phone-card.side-a,.phone-card.side-b{width:min(140px,40vw);}
  .mobile-bar{display:flex;}
  .check-item{grid-template-columns:1fr;gap:10px;}
  .check-num{font-size:28px;}
  .cta-band{padding:30px 22px;border-radius:18px;}
  .cta-band .btn-dark-solid,.cta-band .btn-ghost{width:100%;justify-content:center;}
  .contact-wrap{padding:26px 18px;border-radius:18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .snap-row{padding-bottom:16px;}
  .snap-card{width:78vw;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg:#120B1F;
  --panel:#1B1230;
  --raise:#241A3D;
  --line:rgba(255,255,255,.08);
  --cyan:#22E3B8;
  --coral:#FF6B3D;
  --violet:#A56BFF;
  --text:#F2EEFF;
  --text-2:#B6AECB;
  --text-3:#7E7794;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --shadow:0 20px 48px -24px rgba(0,0,0,.75);
  --glow:0 16px 36px -18px rgba(34,227,184,.45);
  --max:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 480px at 10% -10%, rgba(34,227,184,.10), transparent 62%),
    radial-gradient(820px 460px at 94% 2%, rgba(165,107,255,.13), transparent 62%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","MiSans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{letter-spacing:-.01em;margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container-x{max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#0C0716;border-bottom:1px solid var(--line);font-size:13.5px;color:var(--text-3)}
.topbar-inner{max-width:var(--max);margin:0 auto;height:36px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-inner .tb-left,.topbar-inner .tb-right{display:flex;align-items:center;gap:14px;white-space:nowrap}
.topbar-inner .tb-mid{color:var(--text-2);display:inline-flex;align-items:center;gap:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-inner .tb-mid i{color:var(--cyan)}
.topbar a{color:var(--text-3)}
.topbar a:hover{color:var(--cyan)}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(18,11,31,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.mainnav-inner{max-width:var(--max);margin:0 auto;height:72px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:inline-flex;align-items:center;gap:12px;flex:none}
.brand-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--cyan),var(--violet));color:#0B1017;font-size:18px;box-shadow:0 10px 24px -12px rgba(34,227,184,.8)}
.brand-text{display:flex;flex-direction:column;line-height:1.16;font-weight:800;font-size:16px;letter-spacing:-.01em}
.brand-text small{font-size:11.5px;font-weight:500;color:var(--text-3);letter-spacing:.06em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--text-2);white-space:nowrap}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--text);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--cyan);box-shadow:0 0 12px rgba(34,227,184,.85)}
.nav-cta{display:flex;align-items:center;gap:12px;flex:none}
.btn-neon{display:inline-flex;align-items:center;gap:8px;background:var(--cyan);color:#07130F;font-weight:700;font-size:14.5px;padding:11px 20px;border-radius:999px;border:0;box-shadow:var(--glow);transition:transform .22s ease,box-shadow .22s ease,filter .22s ease}
.btn-neon:hover{filter:brightness(1.07);transform:translateY(-2px);box-shadow:0 22px 44px -18px rgba(34,227,184,.7);color:#07130F}
.btn-neon:active{transform:translateY(0)}
.btn-coral{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--coral),#FF9A5C);color:#22100A;font-weight:700;font-size:14.5px;padding:12px 22px;border-radius:999px;border:0;transition:transform .22s ease,box-shadow .22s ease}
.btn-coral:hover{transform:translateY(-2px);box-shadow:0 20px 40px -18px rgba(255,107,61,.7);color:#22100A}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(34,227,184,.55);color:var(--cyan);background:transparent;font-weight:600;font-size:14.5px;padding:11px 20px;border-radius:999px;transition:background .2s ease,transform .2s ease}
.btn-ghost:hover{background:rgba(34,227,184,.13);transform:translateY(-2px);color:var(--cyan)}
.nav-burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);font-size:17px;cursor:pointer}
.nav-burger:hover{color:var(--cyan);border-color:rgba(34,227,184,.45)}

/* ---------- 抽屉 ---------- */
.drawer{background:var(--panel)!important;color:var(--text);border-left:1px solid var(--line);width:320px!important}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer .offcanvas-title{font-size:16px;font-weight:800;color:var(--text)}
.drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.75}
.drawer .offcanvas-body{padding:16px 14px 28px;display:flex;flex-direction:column;gap:6px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:13px 14px;border-radius:12px;font-size:15px;color:var(--text-2);border:1px solid transparent}
.drawer-link:hover{background:rgba(255,255,255,.05);color:var(--text);border-color:var(--line)}
.drawer-link.active{color:var(--cyan);background:rgba(34,227,184,.09);border-color:rgba(34,227,184,.3)}
.drawer-cta{margin-top:14px}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;padding:24px 0 0;font-size:13.5px;color:var(--text-3)}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{opacity:.45}
.crumb .crumb-cat{color:var(--text-2)}
.crumb .crumb-current{color:var(--text-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(560px,60vw)}

/* ---------- 文章头部 ---------- */
.article-head{padding:22px 0 30px;border-bottom:1px solid var(--line);margin-bottom:34px}
.head-kicker{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--cyan);background:rgba(34,227,184,.1);border:1px solid rgba(34,227,184,.28);padding:6px 14px;border-radius:999px;margin-bottom:18px}
.article-head h1{font-size:clamp(26px,3.8vw,42px);line-height:1.26;font-weight:800;margin-bottom:18px;color:var(--text)}
.meta-row{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:13.5px;color:var(--text-3)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--cyan);opacity:.85}

/* ---------- 布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:42px;align-items:start}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow)}
.article-main{padding:34px 40px 44px;position:relative;overflow:hidden}
.article-main::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--cyan),var(--violet) 55%,var(--coral))}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17.5px;line-height:1.9;color:var(--text-2);overflow-wrap:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{font-size:clamp(21px,2.4vw,26px);line-height:1.45;font-weight:800;color:var(--text);border-left:4px solid var(--cyan);padding-left:15px;margin:2em 0 .9em}
.article-body h3{font-size:19.5px;font-weight:700;color:var(--text);margin:1.6em 0 .7em}
.article-body h4{font-size:17.5px;font-weight:700;color:var(--text);margin:1.4em 0 .6em}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.2em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em}
.article-body strong{color:var(--text);font-weight:700}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(34,227,184,.4)}
.article-body a:hover{border-bottom-color:var(--cyan)}
.article-body img{border-radius:var(--r-img);margin:1.5em auto;height:auto}
.article-body blockquote{margin:1.6em 0;padding:16px 22px;background:rgba(165,107,255,.09);border-left:3px solid var(--violet);border-radius:0 14px 14px 0;color:var(--text-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15.5px;border-radius:12px;overflow:hidden}
.article-body thead th{background:var(--raise);color:var(--text);text-align:left;padding:12px 14px;font-weight:700;white-space:nowrap}
.article-body td{padding:12px 14px;border-top:1px solid var(--line);color:var(--text-2)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025)}
.article-body pre{background:#0C0716;border:1px solid var(--line);border-radius:12px;padding:16px;overflow-x:auto;font-size:14px;color:var(--text-2)}
.article-body code{background:rgba(255,255,255,.07);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13.5px;color:var(--text-3);text-align:center;margin-top:10px}

/* ---------- 空态 ---------- */
.article-empty{text-align:center;padding:64px 20px}
.article-empty .ico{width:74px;height:74px;margin:0 auto 20px;border-radius:22px;display:grid;place-items:center;background:rgba(165,107,255,.12);border:1px solid rgba(165,107,255,.32);color:var(--violet);font-size:30px}
.article-empty h2{font-size:22px;color:var(--text);margin-bottom:12px}
.article-empty p{color:var(--text-3);font-size:15px;margin-bottom:24px}

/* ---------- 标签 ---------- */
.tags-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.tags-row .tags-label{font-size:13px;color:var(--text-3);margin-right:4px}
.tag-badge{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text-2);background:rgba(255,255,255,.045);border:1px solid var(--line);padding:7px 14px;border-radius:999px;transition:all .2s ease}
.tag-badge i{font-size:11px;opacity:.75}
.tag-badge:hover{color:var(--cyan);border-color:rgba(34,227,184,.45);background:rgba(34,227,184,.09);transform:translateY(-1px)}

/* ---------- 上下篇 ---------- */
.postnav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px}
.postnav a{display:block;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px 20px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.postnav a:hover{transform:translateY(-3px);border-color:rgba(34,227,184,.42);box-shadow:var(--shadow)}
.postnav .dir{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;letter-spacing:.06em;color:var(--cyan);margin-bottom:9px}
.postnav .ttl{font-size:15.5px;font-weight:600;color:var(--text);line-height:1.55}
.postnav .next .dir{flex-direction:row-reverse}
.postnav .next{text-align:right}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow)}
.side-card h4{font-size:15px;font-weight:800;color:var(--text);display:flex;align-items:center;gap:9px;margin-bottom:16px}
.side-card h4::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--cyan);box-shadow:0 0 10px rgba(34,227,184,.85)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:290px;overflow-y:auto}
.toc-list::-webkit-scrollbar{width:6px}
.toc-list::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:6px}
.toc-list a{display:block;font-size:14px;color:var(--text-2);padding:8px 10px;border-radius:9px;border-left:2px solid transparent;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.05);border-left-color:var(--cyan)}
.toc-empty{font-size:13.5px;color:var(--text-3);line-height:1.7}
.mini-list{display:flex;flex-direction:column;gap:6px}
.mini-item{display:flex;align-items:center;gap:12px;padding:9px;border-radius:12px;transition:background .2s ease}
.mini-item:hover{background:rgba(255,255,255,.05)}
.mini-item img{width:64px;height:48px;object-fit:cover;border-radius:10px;flex:none}
.mini-item .mini-txt{font-size:14px;color:var(--text-2);line-height:1.5}
.mini-item:hover .mini-txt{color:var(--text)}
.side-cta{background:linear-gradient(140deg,rgba(34,227,184,.16),rgba(255,107,61,.14)),var(--raise);border:1px solid rgba(34,227,184,.3)}
.side-cta p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:18px}
.side-cta .btn-neon,.side-cta .btn-ghost{width:100%;justify-content:center}

/* ---------- 区块通用 ---------- */
.section{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,3vw,30px);font-weight:800;color:var(--text)}
.section-head p{margin-top:9px;font-size:14.5px;color:var(--text-3)}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);transition:transform .24s ease,border-color .24s ease}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(34,227,184,.35)}
.rel-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--raise)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.rel-card:hover .thumb img{transform:scale(1.06)}
.badge-floating{position:absolute;top:12px;left:12px;font-size:12px;color:var(--cyan);background:rgba(12,7,22,.78);border:1px solid rgba(34,227,184,.35);padding:5px 11px;border-radius:999px;backdrop-filter:blur(6px)}
.rel-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.rel-card h3{font-size:17px;font-weight:700;color:var(--text);line-height:1.5;margin-bottom:10px}
.rel-card .body p{font-size:14px;color:var(--text-3);line-height:1.7;margin-bottom:16px;flex:1}
.link-more{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;color:var(--cyan)}
.link-more i{transition:transform .2s ease}
.rel-card:hover .link-more i{transform:translateX(4px)}

/* ---------- 返回栏目 CTA ---------- */
.back-band{position:relative;overflow:hidden;margin-top:64px;padding:38px 42px;border-radius:24px;border:1px solid var(--line);background:linear-gradient(104deg,rgba(34,227,184,.2),rgba(165,107,255,.14) 48%,rgba(255,107,61,.16)),var(--raise);display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.back-band::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 14px);opacity:.5;pointer-events:none}
.back-band .bb-txt{position:relative;z-index:1;max-width:640px}
.back-band h2{font-size:clamp(20px,2.6vw,26px);font-weight:800;color:var(--text);margin-bottom:10px}
.back-band p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.back-band .bb-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:88px;background:#0C0716;border-top:1px solid var(--line);padding:60px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px}
.footer-col h4{font-size:15px;font-weight:800;color:var(--text);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-3);line-height:1.7}
.footer-contact i{color:var(--cyan);margin-top:5px;font-size:13px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;font-size:13.5px;color:var(--text-3)}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--cyan)}

/* ---------- 返回顶部 & 吸底 ---------- */
.to-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;border:1px solid rgba(34,227,184,.4);background:rgba(27,18,48,.92);color:var(--cyan);display:grid;place-items:center;font-size:16px;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .26s ease;z-index:70;backdrop-filter:blur(8px)}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(34,227,184,.16)}
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;padding:10px 14px;background:rgba(12,7,22,.95);border-top:1px solid var(--line);backdrop-filter:blur(12px);gap:10px}
.mobile-bar a{flex:1;justify-content:center;font-size:14px;padding:11px 12px}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:30px}
  .nav-links a{padding:10px 9px;font-size:14px}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .nav-burger{display:grid;place-items:center}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static;margin-top:34px}
  .article-main{padding:28px 24px 34px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:56px 0 0}
}
@media (max-width:767.98px){
  .topbar-inner .tb-mid{display:none}
  .brand-text small{display:none}
  .article-body{font-size:16.5px;line-height:1.85}
  .back-band{padding:28px 24px}
  .postnav{grid-template-columns:minmax(0,1fr)}
  .postnav .next{text-align:left}
  .postnav .next .dir{flex-direction:row}
  .section-head{margin-bottom:22px}
}
@media (max-width:575.98px){
  .container-x{padding:0 16px}
  .mainnav-inner{padding:0 16px;height:64px}
  .brand-mark{width:36px;height:36px;font-size:16px}
  .brand-text{font-size:14.5px}
  .nav-cta .btn-neon{display:none}
  .article-head h1{font-size:24px}
  .article-main{padding:22px 18px 28px}
  .article-body{font-size:16px}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{margin-top:60px;padding:44px 0 84px}
  .mobile-bar{display:flex}
  .to-top{bottom:78px;right:16px}
  .side-card{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg:#120B1F;
  --panel:#1B1230;
  --raised:#241A3D;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --cyan:#22E3B8;
  --coral:#FF6B3D;
  --violet:#A56BFF;
  --text:#F2EEFF;
  --muted:#B6AECB;
  --dim:#7E7794;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:12px;
  --shadow-card:0 20px 48px -24px rgba(0,0,0,.75);
  --shadow-cyan:0 16px 36px -18px rgba(34,227,184,.45);
  --container:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","MiSans","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:56px 56px;
}
main,header,footer{position:relative;z-index:1}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.28}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
a{color:var(--cyan);text-decoration:none;transition:color .2s}
a:hover{color:#5BF0D0}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.container-x{max-width:var(--container);margin:0 auto;padding:0 20px;width:100%}
.section{padding:96px 0}
.section-sm{padding:72px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--cyan);text-transform:uppercase;padding:6px 14px;border:1px solid rgba(34,227,184,.32);
  border-radius:999px;background:rgba(34,227,184,.07);margin-bottom:18px;
}
.h2{font-size:clamp(24px,3.4vw,34px);margin-bottom:14px}
.lead{color:var(--muted);font-size:16.5px;max-width:760px}
.section-head{margin-bottom:44px;max-width:820px}
.text-dim{color:var(--dim)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:rgba(18,11,31,.82);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:background .3s,border-color .3s,box-shadow .3s;
}
.site-header.is-scrolled{background:rgba(14,8,24,.94);border-bottom-color:var(--line-strong);box-shadow:0 18px 40px -30px rgba(0,0,0,.9)}
.mainnav-inner{
  max-width:var(--container);margin:0 auto;padding:0 20px;height:72px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex-shrink:0}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--cyan),var(--violet));color:#0B0616;font-size:17px;
  box-shadow:0 10px 24px -14px rgba(34,227,184,.8);
}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:800;line-height:1.15}
.brand-text small{font-size:11px;font-weight:500;color:var(--dim);letter-spacing:.08em;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{
  position:relative;padding:0 12px;line-height:72px;font-size:15px;color:var(--muted);text-decoration:none;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:16px;height:2px;border-radius:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--text);font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:12px}
.btn-neon{
  display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;border:0;
  background:var(--cyan);color:#08201B;font-size:14px;font-weight:800;text-decoration:none;
  box-shadow:var(--shadow-cyan);transition:transform .22s ease,filter .22s ease,box-shadow .22s ease;white-space:nowrap;
}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-2px);color:#08201B;box-shadow:0 22px 44px -18px rgba(34,227,184,.6)}
.btn-neon:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;
  border:1px solid rgba(34,227,184,.55);background:transparent;color:var(--cyan);font-size:14px;font-weight:700;
  text-decoration:none;transition:.22s ease;white-space:nowrap;
}
.btn-ghost:hover{background:rgba(34,227,184,.1);color:var(--cyan);transform:translateY(-2px)}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14px;font-weight:700;
  border-bottom:1px solid transparent;text-decoration:none;transition:.2s;
}
.btn-line:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.nav-burger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);
  background:var(--raised);color:var(--text);font-size:16px;
}

/* ---------- drawer ---------- */
.drawer{background:var(--panel);color:var(--text);border-left:1px solid var(--line);width:308px}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer-title{font-weight:800;font-size:16px}
.drawer-close{background:transparent;border:0;color:var(--muted);font-size:20px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.drawer-nav a{
  padding:13px 16px;border-radius:12px;background:var(--raised);color:var(--muted);
  font-size:15px;font-weight:600;text-decoration:none;border:1px solid transparent;
}
.drawer-nav a:hover{color:var(--text);border-color:var(--line-strong)}
.drawer-nav a.active{color:#08201B;background:var(--cyan);font-weight:800}
.drawer-cta{width:100%;justify-content:center}

/* ---------- breadcrumb ---------- */
.crumb{padding:20px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--dim);margin:0;padding:0;list-style:none}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--cyan)}
.crumb li+li::before{content:"/";margin-right:8px;color:#4A4260}

/* ---------- hero ---------- */
.hero{padding:56px 0 80px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,227,184,.16),transparent 68%);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-220px;left:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(165,107,255,.16),transparent 68%);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:5fr 6fr;gap:56px;align-items:center;position:relative}
.hero h1{font-size:clamp(28px,5vw,52px);margin-bottom:20px}
.hero h1 .hl{
  background:linear-gradient(100deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:var(--muted);font-size:17.5px;max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.trust-badges{display:flex;flex-wrap:wrap;gap:10px}
.trust-badges span{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--muted);
  padding:8px 14px;border-radius:999px;background:var(--panel);border:1px solid var(--line);
}
.trust-badges i{color:var(--cyan);font-size:12px}

.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:420px}
.phone-card{
  position:relative;width:100%;max-width:308px;aspect-ratio:9/16;border-radius:22px;overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow-card);
  background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;
}
.phone-card img{width:100%;height:100%;object-fit:cover;border-radius:0;opacity:.92}
.phone-card::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,11,31,.12) 0%,rgba(18,11,31,.86) 100%);
}
.phone-top{position:absolute;top:14px;left:14px;right:14px;z-index:2;display:flex;justify-content:space-between;align-items:center}
.chip-live{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:#08201B;
  background:var(--cyan);padding:5px 11px;border-radius:999px;
}
.chip-time{font-size:12px;color:var(--text);background:rgba(12,7,22,.72);padding:5px 10px;border-radius:999px;border:1px solid var(--line-strong)}
.phone-bottom{position:absolute;left:16px;right:16px;bottom:16px;z-index:2}
.phone-bottom h3{font-size:17px;margin-bottom:6px;color:#fff}
.phone-bottom p{font-size:12.5px;color:var(--muted);margin:0 0 12px}
.progress-track{display:flex;gap:5px}
.progress-track i{display:block;height:4px;flex:1;border-radius:99px;background:rgba(255,255,255,.2)}
.progress-track i.on{background:var(--cyan);box-shadow:0 0 12px rgba(34,227,184,.7)}
.float-card{
  position:absolute;right:-6px;bottom:34px;width:210px;padding:16px;border-radius:16px;
  background:rgba(36,26,61,.94);border:1px solid var(--line-strong);box-shadow:var(--shadow-card);backdrop-filter:blur(8px);
}
.float-card .fc-num{font-size:24px;font-weight:800;color:var(--cyan);text-shadow:0 0 22px rgba(34,227,184,.5);line-height:1;margin-bottom:6px}
.float-card strong{display:block;font-size:14px;margin-bottom:3px}
.float-card span{font-size:12.5px;color:var(--muted);line-height:1.5;display:block}

/* ---------- steps ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:16px}
.steps::before{
  content:"";position:absolute;top:22px;left:7%;right:7%;height:2px;z-index:0;
  background:repeating-linear-gradient(90deg,rgba(34,227,184,.5) 0 8px,transparent 8px 16px);
}
.step-card{
  position:relative;margin-top:44px;padding:30px 22px 26px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(34,227,184,.42)}
.step-dot{
  position:absolute;top:-44px;left:24px;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;font-size:14px;font-weight:800;color:var(--cyan);
  background:#0F0A1C;border:2px solid var(--cyan);box-shadow:0 0 0 6px rgba(34,227,184,.09);
}
.step-card h3{font-size:19px;margin-bottom:10px}
.step-card p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.step-tip{font-size:13px;color:var(--dim);display:flex;gap:8px;align-items:flex-start}
.step-tip i{color:var(--coral);margin-top:5px;font-size:11px}

/* ---------- cards ---------- */
.card-x{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;height:100%;transition:transform .25s ease,border-color .25s ease;
}
.card-x:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .45s ease}
.card-x:hover .card-media img{transform:scale(1.04)}
.card-body-x{padding:26px 24px}
.card-body-x h3{font-size:20px;margin-bottom:10px}
.card-body-x p{font-size:15px;color:var(--muted);margin-bottom:14px}
.badge-x{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;padding:5px 12px;
  border-radius:999px;background:rgba(34,227,184,.12);color:var(--cyan);border:1px solid rgba(34,227,184,.28);
}
.badge-x.orange{background:rgba(255,107,61,.12);color:var(--coral);border-color:rgba(255,107,61,.3)}
.badge-x.violet{background:rgba(165,107,255,.14);color:#C9A6FF;border-color:rgba(165,107,255,.3)}
.mini-card{
  display:flex;gap:16px;padding:22px;background:var(--raised);border:1px solid var(--line);
  border-radius:var(--radius-card);margin-bottom:20px;transition:transform .25s ease,border-color .25s ease;
}
.mini-card:hover{transform:translateY(-3px);border-color:rgba(34,227,184,.34)}
.mini-icon{
  flex:0 0 46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:17px;
  background:rgba(34,227,184,.12);color:var(--cyan);
}
.mini-icon.violet{background:rgba(165,107,255,.14);color:#C9A6FF}
.mini-icon.orange{background:rgba(255,107,61,.14);color:var(--coral)}
.mini-card h3{font-size:17px;margin-bottom:6px}
.mini-card p{font-size:14px;color:var(--muted);margin:0}
.stagger .stack-col{margin-top:40px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--muted);margin-bottom:14px}
.check-list li:last-child{margin-bottom:0}
.check-list i{color:var(--cyan);margin-top:6px;font-size:12px}

/* ---------- prompt table ---------- */
.prompt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:12px}
.prompt-card{
  padding:26px 24px;border-radius:var(--radius-card);background:linear-gradient(160deg,var(--panel),rgba(36,26,61,.75));
  border:1px solid var(--line);position:relative;overflow:hidden;
}
.prompt-card::after{content:"";position:absolute;left:0;top:0;width:3px;height:100%;background:var(--cyan);opacity:.85}
.prompt-card.alt::after{background:var(--coral)}
.prompt-card.alt2::after{background:var(--violet)}
.prompt-card h3{font-size:17px;margin:12px 0 8px}
.prompt-card p{font-size:14.5px;color:var(--muted);margin:0}
.prompt-code{
  display:inline-block;font-size:13px;font-weight:700;color:var(--text);background:rgba(12,7,22,.7);
  border:1px dashed var(--line-strong);border-radius:10px;padding:6px 12px;
}

/* ---------- faq ---------- */
.faq-acc .accordion-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card) !important;
  margin-bottom:14px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:transparent;color:var(--text);font-size:17px;font-weight:700;padding:20px 56px 20px 24px;
  box-shadow:none;position:relative;border-radius:var(--radius-card) !important;
}
.faq-acc .accordion-button::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--cyan);opacity:0;transition:opacity .25s;
}
.faq-acc .accordion-button:not(.collapsed){background:rgba(34,227,184,.06);color:#fff}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1}
.faq-acc .accordion-button:focus{box-shadow:0 0 0 2px rgba(34,227,184,.45)}
.faq-acc .accordion-button::after{
  width:16px;height:16px;background-image:none;position:absolute;right:24px;
  background:
    linear-gradient(var(--cyan),var(--cyan)) center/100% 2px no-repeat,
    linear-gradient(var(--cyan),var(--cyan)) center/2px 100% no-repeat;
  transition:transform .25s ease,background .25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  background:linear-gradient(var(--cyan),var(--cyan)) center/100% 2px no-repeat;transform:rotate(180deg);
}
.faq-acc .accordion-body{padding:6px 24px 24px;color:var(--muted);font-size:15.5px}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  background:linear-gradient(105deg,#22E3B8 0%,#4FD9C0 42%,#FF6B3D 100%);
  padding:48px 44px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.22;
  background-image:repeating-linear-gradient(115deg,rgba(12,7,22,.5) 0 2px,transparent 2px 14px);
}
.cta-band-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#0C1320;font-size:clamp(22px,3vw,30px);margin-bottom:10px}
.cta-band p{color:rgba(12,19,32,.82);font-size:15.5px;margin:0;max-width:560px;font-weight:500}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-dark-solid{
  display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;background:#120B1F;color:#fff;
  font-weight:800;font-size:14.5px;text-decoration:none;transition:.22s;border:0;
}
.btn-dark-solid:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 34px -18px rgba(0,0,0,.7)}
.btn-clear{
  display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;background:transparent;
  border:1px solid rgba(12,19,32,.5);color:#0C1320;font-weight:800;font-size:14.5px;text-decoration:none;transition:.22s;
}
.btn-clear:hover{background:rgba(12,19,32,.12);color:#0C1320;transform:translateY(-2px)}

/* ---------- form ---------- */
.form-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:34px 32px;box-shadow:var(--shadow-card);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:var(--muted)}
.field .req{color:var(--coral);margin-left:4px}
.form-x input,.form-x select,.form-x textarea{
  width:100%;background:#150E26;border:1px solid var(--line);border-radius:var(--radius-input);
  color:var(--text);padding:13px 15px;font-size:15px;font-family:inherit;transition:border-color .2s,box-shadow .2s;
}
.form-x textarea{min-height:118px;resize:vertical}
.form-x select{
  appearance:none;-webkit-appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23B6AECB' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:18px;padding-right:42px;
}
.form-x input:focus,.form-x select:focus,.form-x textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 4px rgba(34,227,184,.14);
}
.form-x input.is-invalid,.form-x select.is-invalid{border-color:var(--coral)}
.err{display:block;font-size:13px;color:#FF8A63;margin-top:6px;min-height:18px}
.form-tip{font-size:13.5px;margin-top:16px;min-height:20px}
.form-tip.ok{color:var(--cyan)}
.form-tip.bad{color:#FF8A63}

/* ---------- footer ---------- */
.site-footer{background:#0C0716;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14.5px;color:var(--dim);max-width:340px;line-height:1.8}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text)}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:14.5px;color:var(--muted)}
.footer-col ul a:hover{color:var(--cyan)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted)}
.footer-contact i{color:var(--cyan);margin-top:5px;font-size:12px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--dim);
}
.footer-bottom a{color:var(--muted)}

/* ---------- float utils ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;border:1px solid var(--line-strong);
  background:var(--raised);color:var(--text);display:grid;place-items:center;z-index:1040;opacity:0;visibility:hidden;
  transform:translateY(10px);transition:.28s;cursor:pointer;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--cyan);color:var(--cyan)}
.mobile-cta{display:none}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .nav-links a{padding:0 9px;font-size:14.5px}
}
@media (max-width:992px){
  .nav-links{display:none}
  .nav-burger{display:grid;place-items:center}
  .hero{padding:36px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{min-height:auto;justify-content:flex-start}
  .float-card{right:auto;left:246px;bottom:-18px}
  .section{padding:72px 0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps::before{display:none}
  .prompt-grid{grid-template-columns:1fr}
  .stagger .stack-col{margin-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .hero h1{font-size:clamp(26px,7vw,36px)}
  .steps{grid-template-columns:1fr;gap:26px}
  .step-card{margin-top:0;padding-top:64px}
  .step-dot{top:18px;left:22px}
  .cta-band{padding:36px 24px;border-radius:20px}
  .cta-band-inner{flex-direction:column;align-items:flex-start}
  .form-panel{padding:26px 20px}
  .section{padding:56px 0}
}
@media (max-width:576px){
  .mainnav-inner{height:64px}
  .brand-text{font-size:14.5px}
  .brand-text small{display:none}
  .nav-cta .btn-neon{display:none}
  .hero-visual{justify-content:center}
  .phone-card{max-width:262px}
  .float-card{left:auto;right:-4px;width:186px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  body{padding-bottom:70px}
  .mobile-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1050;padding:12px 16px;
    background:rgba(12,7,22,.94);border-top:1px solid var(--line-strong);backdrop-filter:blur(10px);
  }
  .mobile-cta a{
    flex:1;justify-content:center;display:inline-flex;align-items:center;gap:8px;padding:13px 18px;border-radius:999px;
    background:var(--cyan);color:#08201B;font-weight:800;font-size:15px;text-decoration:none;
  }
  .to-top{bottom:88px;right:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg:#120B1F;
  --panel:#1B1230;
  --panel-2:#241A3D;
  --deep:#0C0716;
  --line:rgba(255,255,255,.08);
  --cyan:#22E3B8;
  --orange:#FF6B3D;
  --purple:#A56BFF;
  --text:#F2EEFF;
  --text-2:#B6AECB;
  --text-3:#7E7794;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --shadow-card:0 20px 48px -24px rgba(0,0,0,.75);
  --shadow-btn:0 16px 36px -18px rgba(34,227,184,.45);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","MiSans","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s,background-color .25s,border-color .25s,transform .25s,box-shadow .25s}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.muted{color:var(--text-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--cyan);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--purple));border-radius:2px}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,3.4vw,34px);margin:14px 0 14px}
.sec-head p{color:var(--text-2);font-size:16px}

/* ---------- top bar ---------- */
.topbar{background:var(--deep);border-bottom:1px solid var(--line);font-size:13px;color:var(--text-3)}
.topbar-inner{max-width:var(--container);margin:0 auto;padding:0 24px;height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.tb-mid{display:flex;align-items:center;gap:8px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tb-mid i{color:var(--cyan)}
.tb-right{display:flex;align-items:center;gap:16px;white-space:nowrap}
.tb-right a{color:var(--text-2)}
.tb-right a:hover{color:var(--cyan)}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:1030}
.mainnav{background:rgba(18,11,31,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .3s,background-color .3s}
.mainnav.is-scrolled{box-shadow:0 18px 40px -28px rgba(0,0,0,.9);background:rgba(18,11,31,.94)}
.mainnav-inner{max-width:var(--container);margin:0 auto;padding:0 24px;height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,var(--cyan),var(--purple));color:#0C0716;font-size:18px;box-shadow:0 12px 26px -14px rgba(34,227,184,.7)}
.brand-text{display:flex;flex-direction:column;font-weight:800;font-size:17px;line-height:1.2;color:var(--text)}
.brand-text small{font-size:11px;font-weight:600;letter-spacing:.16em;color:var(--cyan);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{position:relative;padding:10px 14px;font-size:15px;color:var(--text-2);border-radius:10px}
.nav-links a::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:#fff}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:12px;flex:none}
.btn-neon{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;border:1px solid transparent;background:var(--cyan);color:#08221C;font-weight:800;font-size:15px;box-shadow:var(--shadow-btn);cursor:pointer}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 22px 40px -16px rgba(34,227,184,.6);color:#08221C}
.btn-neon:active{transform:translateY(0)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;border:1px solid rgba(34,227,184,.55);background:transparent;color:var(--cyan);font-weight:700;font-size:15px;cursor:pointer}
.btn-ghost:hover{background:rgba(34,227,184,.1);transform:translateY(-2px);color:var(--cyan)}
.btn-plain{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--cyan);border-bottom:1px solid transparent;padding-bottom:2px}
.btn-plain:hover{border-bottom-color:var(--cyan);color:var(--cyan)}
.nav-burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--text);cursor:pointer}
.nav-burger:hover{border-color:rgba(34,227,184,.5);color:var(--cyan)}

/* ---------- breadcrumb ---------- */
.crumb{padding:26px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.crumb li{display:flex;align-items:center;gap:10px}
.crumb li+li::before{content:"/";color:var(--line)}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--cyan)}
.crumb li[aria-current]{color:var(--cyan);font-weight:700}

/* ---------- hero ---------- */
.hero-cat{position:relative;padding:64px 0 88px;overflow:hidden}
.hero-cat::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.28}
.hero-cat::after{content:"";position:absolute;inset:0;background:
  radial-gradient(760px 420px at 12% 18%,rgba(34,227,184,.18),transparent 68%),
  radial-gradient(620px 420px at 88% 82%,rgba(165,107,255,.2),transparent 70%),
  linear-gradient(180deg,rgba(18,11,31,.55),var(--bg) 88%)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero-copy h1{font-size:clamp(28px,4.4vw,46px);margin:18px 0 20px}
.hero-copy h1 em{font-style:normal;color:var(--cyan);text-shadow:0 0 28px rgba(34,227,184,.5)}
.hero-sub{font-size:17px;color:var(--text-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 28px}
.trust-badges{display:flex;flex-wrap:wrap;gap:10px}
.badge-x{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line);font-size:13px;color:var(--text-2)}
.badge-x i{color:var(--cyan)}
.hero-visual{position:relative;display:flex;justify-content:center}
.phone-card{width:min(320px,100%);border-radius:22px;background:var(--panel);border:1px solid var(--line);padding:14px;box-shadow:var(--shadow-card);position:relative}
.phone-card .shot{position:relative;border-radius:16px;overflow:hidden;aspect-ratio:9/16;background:var(--panel-2)}
.phone-card .shot img{width:100%;height:100%;object-fit:cover}
.phone-card .shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,7,22,.1) 30%,rgba(12,7,22,.9))}
.shot-tag{position:absolute;top:12px;left:12px;z-index:2;padding:5px 12px;border-radius:999px;background:rgba(12,7,22,.7);border:1px solid rgba(34,227,184,.4);font-size:12px;color:var(--cyan);font-weight:700}
.shot-dur{position:absolute;right:12px;bottom:14px;z-index:2;padding:3px 9px;border-radius:8px;background:rgba(12,7,22,.75);font-size:12px;color:#fff}
.shot-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:rgba(34,227,184,.9);color:#08221C;font-size:18px;box-shadow:0 14px 30px -12px rgba(34,227,184,.8)}
.shot-bar{position:absolute;left:14px;right:14px;bottom:14px;height:4px;border-radius:4px;background:rgba(255,255,255,.16);z-index:2}
.shot-bar i{display:block;height:100%;width:64%;border-radius:4px;background:linear-gradient(90deg,var(--cyan),var(--orange))}
.float-card{position:absolute;border-radius:16px;background:var(--panel-2);border:1px solid var(--line);box-shadow:var(--shadow-card);padding:14px 18px}
.float-card b{display:block;font-size:24px;color:var(--cyan);text-shadow:0 0 22px rgba(34,227,184,.45)}
.float-card span{font-size:12px;color:var(--text-2)}
.float-a{top:6%;right:-6px}
.float-b{bottom:8%;left:-10px}
.float-b b{color:var(--orange);text-shadow:0 0 22px rgba(255,107,61,.45)}

/* ---------- layout with sticky side ---------- */
.cat-layout{display:grid;grid-template-columns:256px 1fr;gap:44px;align-items:start}
.cat-side{position:sticky;top:104px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-card)}
.cat-side h3{font-size:14px;letter-spacing:.1em;color:var(--text-3);margin-bottom:14px;font-weight:700}
.cat-side ul li+li{margin-top:4px}
.cat-side a{display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--text-2);border-left:2px solid transparent}
.cat-side a:hover{background:rgba(255,255,255,.05);color:var(--text)}
.cat-side a.is-active{background:rgba(34,227,184,.1);color:var(--cyan);border-left-color:var(--cyan);font-weight:700}
.side-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}

/* ---------- content blocks ---------- */
.block + .block{margin-top:56px}
.block h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;padding-left:14px;position:relative}
.block h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--cyan),var(--purple))}
.block > p{color:var(--text-2);max-width:820px}
.media-list{margin-top:28px;display:grid;gap:18px}
.media-row{display:grid;grid-template-columns:212px 1fr;gap:22px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:16px;box-shadow:var(--shadow-card);transition:transform .3s,border-color .3s}
.media-row:hover{transform:translateY(-4px);border-color:rgba(34,227,184,.35)}
.media-row img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img)}
.media-row h3{font-size:19px;margin-bottom:8px}
.media-row p{font-size:15px;color:var(--text-2)}
.media-row .row-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tag-y{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700;color:var(--cyan);background:rgba(34,227,184,.1);border:1px solid rgba(34,227,184,.28)}
.tag-o{color:var(--orange);background:rgba(255,107,61,.1);border-color:rgba(255,107,61,.28)}

.point-list{margin-top:26px;display:grid;gap:14px}
.point-list li{display:flex;gap:14px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.point-list i{color:var(--cyan);font-size:17px;margin-top:4px}
.point-list b{display:block;font-size:16px;margin-bottom:4px}
.point-list span{font-size:14.5px;color:var(--text-2)}

/* ---------- risk cards ---------- */
.risk-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px}
.risk-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-card);position:relative;overflow:hidden;transition:transform .3s,border-color .3s}
.risk-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:linear-gradient(90deg,var(--cyan),var(--purple));opacity:.8}
.risk-card:hover{transform:translateY(-4px);border-color:rgba(34,227,184,.4)}
.risk-card .rc-ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(255,107,61,.12);color:var(--orange);font-size:17px;margin-bottom:14px}
.risk-card h3{font-size:17px;margin-bottom:8px}
.risk-card p{font-size:14.5px;color:var(--text-2)}
.risk-card .rc-step{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);font-size:13px;color:var(--text-3)}

/* ---------- faq ---------- */
.faq-acc .accordion-item{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-bottom:14px}
.faq-acc .accordion-item:last-child{margin-bottom:0}
.faq-acc .accordion-button{background:transparent;color:var(--text);font-weight:700;font-size:16px;padding:18px 20px;box-shadow:none;border-radius:16px}
.faq-acc .accordion-button:not(.collapsed){background:var(--panel-2);color:var(--cyan);border-left:3px solid var(--cyan)}
.faq-acc .accordion-button:focus{box-shadow:none}
.faq-acc .accordion-button:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
.faq-acc .accordion-button::after{
  content:"";width:22px;height:22px;flex:none;background-image:linear-gradient(var(--cyan),var(--cyan)),linear-gradient(var(--cyan),var(--cyan));
  background-size:12px 2px,2px 12px;background-position:center,center;background-repeat:no-repeat;border-radius:6px;transition:transform .3s
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq-acc .accordion-body{color:var(--text-2);font-size:15px;padding:4px 22px 22px;line-height:1.85}

/* ---------- stats ---------- */
.stats-band{background:linear-gradient(135deg,rgba(34,227,184,.12),rgba(165,107,255,.14));border:1px solid var(--line);border-radius:24px;padding:40px 32px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat b{display:block;font-size:clamp(26px,3.4vw,38px);color:var(--cyan);text-shadow:0 0 26px rgba(34,227,184,.4);font-weight:800}
.stat:nth-child(2) b{color:var(--orange);text-shadow:0 0 26px rgba(255,107,61,.4)}
.stat:nth-child(3) b{color:var(--purple);text-shadow:0 0 26px rgba(165,107,255,.4)}
.stat span{font-size:14px;color:var(--text-2)}

/* ---------- cta + form ---------- */
.cta-form{display:grid;grid-template-columns:1fr 1fr;gap:36px;background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:40px;box-shadow:var(--shadow-card);position:relative;overflow:hidden}
.cta-form::before{content:"";position:absolute;right:-90px;top:-90px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(34,227,184,.22),transparent 70%)}
.cta-left{position:relative;z-index:2}
.cta-left h2{font-size:clamp(22px,2.8vw,32px);margin:14px 0 16px}
.cta-left p{color:var(--text-2);font-size:15.5px}
.cta-left ul{margin-top:22px;display:grid;gap:10px}
.cta-left li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.cta-left li i{color:var(--cyan);margin-top:5px}
.form-card{position:relative;z-index:2;background:var(--panel-2);border:1px solid var(--line);border-radius:18px;padding:24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:8px;color:var(--text-2)}
.field .control{width:100%;padding:12px 14px;border-radius:var(--r-input);background:rgba(12,7,22,.7);border:1px solid var(--line);color:var(--text);transition:border-color .25s,box-shadow .25s}
.field .control::placeholder{color:var(--text-3)}
.field .control:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,227,184,.16)}
textarea.control{min-height:104px;resize:vertical}
.field .err{display:none;margin-top:7px;font-size:13px;color:#FF7A6B}
.field.has-error .control{border-color:#FF7A6B}
.field.has-error .err{display:block}
.form-ok{display:none;margin-top:14px;padding:12px 14px;border-radius:12px;background:rgba(34,227,184,.12);border:1px solid rgba(34,227,184,.35);color:var(--cyan);font-size:14px;font-weight:700}
.form-ok.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--deep);border-top:1px solid var(--line);padding:64px 0 26px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{margin-top:16px;font-size:14.5px;color:var(--text-3);max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{font-size:14.5px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--cyan)}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.footer-contact i{color:var(--cyan);margin-top:5px}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13.5px;color:var(--text-3)}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--cyan)}

/* ---------- misc ui ---------- */
.to-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;border:1px solid rgba(34,227,184,.4);background:rgba(27,18,48,.92);color:var(--cyan);display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:.3s;z-index:1040}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-cta{display:none}
.drawer-nav a{display:block;padding:14px 4px;border-bottom:1px solid var(--line);font-size:15.5px;color:var(--text-2)}
.drawer-nav a.active{color:var(--cyan);font-weight:700}
.drawer-cta{margin-top:22px;display:grid;gap:12px}
.offcanvas{background:var(--panel);color:var(--text);border-left:1px solid var(--line)}
.btn-close{filter:invert(1) grayscale(1) brightness(2)}

@media (max-width:1200px){
  .nav-links a{padding:10px 10px;font-size:14.5px}
  .risk-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .nav-links{display:none}
  .nav-burger{display:grid;place-items:center}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-cat{padding:44px 0 68px}
  .cat-layout{grid-template-columns:1fr;gap:30px}
  .cat-side{position:static;padding:16px}
  .cat-side h3{margin-bottom:10px}
  .cat-side ul{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px}
  .cat-side ul li+li{margin-top:0}
  .cat-side a{white-space:nowrap;border-left:none;border-bottom:2px solid transparent;border-radius:10px}
  .cat-side a.is-active{border-left:none;border-bottom-color:var(--cyan)}
  .side-note{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .cta-form{grid-template-columns:1fr;padding:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .media-row{grid-template-columns:1fr}
  .media-row img{aspect-ratio:16/9}
  .float-card{display:none}
  .topbar-inner{height:34px}
  .tb-mid{display:none}
}
@media (max-width:576px){
  .section{padding:56px 0}
  .container-x{padding:0 18px}
  .mainnav-inner{height:62px;padding:0 18px}
  .brand-text{font-size:15px}
  .brand-text small{display:none}
  .brand-mark{width:38px;height:38px;border-radius:11px}
  .nav-cta .btn-neon{display:none}
  .risk-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .cta-form{padding:22px}
  .form-card{padding:18px}
  .footer-grid{grid-template-columns:1fr}
  .mobile-cta{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1050;padding:10px 14px;gap:10px;background:rgba(12,7,22,.94);border-top:1px solid var(--line);backdrop-filter:blur(10px)}
  .mobile-cta .btn-neon,.mobile-cta .btn-ghost{flex:1;justify-content:center;padding:11px 14px;font-size:14.5px}
  .to-top{bottom:82px;right:16px;width:42px;height:42px}
  .site-footer{padding-bottom:96px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg:#120B1F;
  --bg-deep:#0C0716;
  --panel:#1B1230;
  --panel-2:#241A3D;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(34,227,184,.35);
  --primary:#22E3B8;
  --accent:#FF6B3D;
  --violet:#A56BFF;
  --text:#F2EEFF;
  --text-2:#B6AECB;
  --text-3:#7E7794;
  --card-r:18px;
  --img-r:14px;
  --input-r:12px;
  --shadow-card:0 20px 48px -24px rgba(0,0,0,.75);
  --shadow-neon:0 16px 36px -18px rgba(34,227,184,.45);
  --shadow-orange:0 16px 36px -18px rgba(255,107,61,.45);
  --gap:22px;
  --container:1200px;
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","MiSans","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.28}
p{margin:0}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:var(--sec-pad) 0;position:relative}
.section-alt{background:linear-gradient(180deg,rgba(27,18,48,.75),rgba(18,11,31,0) 60%)}

/* ============ 顶部信息条 ============ */
.site-topbar{height:36px;background:var(--bg-deep);border-bottom:1px solid var(--line);font-size:13px;color:var(--text-3)}
.topbar-inner{max-width:var(--container);height:100%;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-left{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden}
.topbar-left i{color:var(--primary)}
.topbar-mid{color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:18px;white-space:nowrap}
.topbar-right a{color:var(--text-3);transition:color .2s ease}
.topbar-right a:hover{color:var(--primary)}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.mainnav{
  height:72px;
  background:rgba(18,11,31,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.mainnav-inner{
  max-width:var(--container);height:100%;margin:0 auto;padding:0 20px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  color:#0B0716;font-size:18px;
  box-shadow:0 10px 24px -14px rgba(34,227,184,.9);
}
.brand-text{display:flex;flex-direction:column;font-weight:800;font-size:16px;line-height:1.2;letter-spacing:-.01em}
.brand-text small{font-size:11px;font-weight:500;color:var(--text-3);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:8px 13px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;box-shadow:0 0 10px rgba(34,227,184,.8);
}
.nav-cta{display:flex;align-items:center;gap:12px}
.btn-neon{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;
  background:var(--primary);color:#08211B;font-weight:700;font-size:15px;
  box-shadow:var(--shadow-neon);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 20px 42px -18px rgba(34,227,184,.65);color:#08211B}
.btn-neon:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 21px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--primary);font-weight:600;font-size:15px;
  background:transparent;transition:background .2s ease,transform .2s ease,color .2s ease;
}
.btn-ghost:hover{background:rgba(34,227,184,.1);transform:translateY(-2px);color:var(--primary)}
.btn-orange{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;
  background:var(--accent);color:#2A0C03;font-weight:700;font-size:15px;
  box-shadow:var(--shadow-orange);
  transition:transform .2s ease,filter .2s ease;
}
.btn-orange:hover{filter:brightness(1.06);transform:translateY(-2px);color:#2A0C03}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--primary);position:relative;padding-bottom:2px}
.btn-text::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--primary);transition:width .25s ease}
.btn-text:hover::after{width:100%}
.nav-burger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);color:var(--text);font-size:17px;
  place-items:center;background:rgba(255,255,255,.03);
}
.offcanvas.drawer{background:var(--panel);color:var(--text);border-right:1px solid var(--line);width:300px}
.drawer .offcanvas-header{border-bottom:1px solid var(--line)}
.drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.6)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;padding-top:8px}
.drawer-nav a{padding:13px 14px;border-radius:12px;color:var(--text-2);background:rgba(255,255,255,.02);border:1px solid transparent}
.drawer-nav a:hover{color:var(--text);border-color:var(--line)}
.drawer-nav a.active{color:var(--primary);border-color:var(--line-strong);background:rgba(34,227,184,.08)}

/* ============ Hero ============ */
.hero{position:relative;padding:76px 0 84px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.28;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(18,11,31,.92) 15%,rgba(18,11,31,.72) 55%,rgba(18,11,31,.95));
}
.hero-grid-lines{
  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:64px 64px;
  mask-image:radial-gradient(circle at 70% 30%,#000 10%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 70% 30%,#000 10%,transparent 72%);
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:5fr 6fr;gap:56px;align-items:center}
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb-x a{color:var(--text-3);transition:color .2s ease}
.breadcrumb-x a:hover{color:var(--primary)}
.breadcrumb-x i{font-size:9px;opacity:.7}
.breadcrumb-x .current{color:var(--text-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line-strong);background:rgba(34,227,184,.08);
  color:var(--primary);font-size:13px;font-weight:600;letter-spacing:.04em;
  margin-bottom:20px;
}
.hero h1{font-size:clamp(28px,5vw,52px);margin-bottom:18px}
.hero h1 span{color:var(--primary);text-shadow:0 0 24px rgba(34,227,184,.45)}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px}
.hero-badges li{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  background:var(--panel-2);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.hero-badges i{color:var(--accent);font-size:12px}

.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:420px}
.phone-card{
  position:relative;width:280px;border-radius:26px;overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  background:var(--panel);
  box-shadow:0 34px 70px -30px rgba(0,0,0,.9);
  transform:rotate(-2deg);
  transition:transform .35s ease;
}
.phone-card:hover{transform:rotate(0deg) translateY(-6px)}
.phone-card img{width:100%;height:430px;object-fit:cover}
.phone-card .duration{
  position:absolute;top:14px;right:14px;
  padding:4px 10px;border-radius:999px;
  background:rgba(12,7,22,.78);font-size:12px;color:var(--text-2);border:1px solid var(--line);
}
.phone-card .play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(34,227,184,.9);color:#08211B;font-size:18px;
  box-shadow:0 0 0 12px rgba(34,227,184,.14);
}
.phone-card .bar{position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(255,255,255,.14)}
.phone-card .bar span{display:block;height:100%;width:62%;background:linear-gradient(90deg,var(--primary),var(--violet))}
.mini-card{
  position:absolute;width:150px;border-radius:18px;overflow:hidden;
  border:1px solid var(--line);background:var(--panel-2);
  box-shadow:var(--shadow-card);
}
.mini-card img{width:100%;height:120px;object-fit:cover}
.mini-card p{padding:10px 12px;font-size:12px;color:var(--text-2);line-height:1.5}
.mini-a{left:0;top:34px;transform:rotate(-6deg)}
.mini-b{right:0;bottom:26px;transform:rotate(5deg)}

/* ============ 数据信任条 ============ */
.trustbar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-deep)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{padding:30px 22px;text-align:center;border-right:1px solid var(--line)}
.trust-item:last-child{border-right:0}
.trust-num{font-size:clamp(24px,3vw,34px);font-weight:800;color:var(--primary);text-shadow:0 0 22px rgba(34,227,184,.4);line-height:1.2}
.trust-label{font-size:13px;color:var(--text-3);margin-top:4px}

/* ============ 通用区块标题 ============ */
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head .tagline{color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.14em;margin-bottom:12px;display:block}
.sec-head h2{font-size:clamp(24px,3.4vw,34px);margin-bottom:14px}
.sec-head p{color:var(--text-2);font-size:16px}

/* ============ 标签筛选条 ============ */
.chipbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.chip{
  padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--panel);
  font-size:14px;color:var(--text-2);
  transition:all .22s ease;
}
.chip:hover{border-color:var(--line-strong);color:var(--text)}
.chip.is-active{
  background:var(--primary);color:#08211B;border-color:var(--primary);font-weight:700;
  box-shadow:var(--shadow-neon);
}

/* ============ 瀑布流卡片 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);grid-auto-flow:dense}
.flow-item{display:flex}
.flow-item.is-hidden{display:none}
.flow-card{
  width:100%;display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--card-r);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.flow-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 26px 56px -26px rgba(34,227,184,.35)}
.flow-cover{position:relative;overflow:hidden}
.flow-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.flow-card:hover .flow-cover img{transform:scale(1.06)}
.h-a .flow-cover{height:216px}
.h-b .flow-cover{height:292px}
.h-c .flow-cover{height:252px}
.flow-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,7,22,0) 40%,rgba(12,7,22,.72))}
.flow-badge{
  position:absolute;top:12px;left:12px;z-index:2;
  padding:4px 12px;border-radius:999px;
  background:rgba(34,227,184,.92);color:#08211B;font-size:12px;font-weight:700;
}
.flow-tag{
  position:absolute;top:12px;right:12px;z-index:2;
  padding:4px 10px;border-radius:999px;font-size:12px;
  background:rgba(12,7,22,.8);border:1px solid var(--line);color:var(--text-2);
}
.flow-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.flow-body h3{font-size:19px}
.flow-body p{color:var(--text-2);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.flow-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:8px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.flow-foot a{color:var(--primary);font-weight:600}
.flow-foot a:hover{text-decoration:underline}
.flow-empty{
  display:none;text-align:center;padding:60px 24px;border:1px dashed var(--line);border-radius:var(--card-r);
  background:var(--panel);color:var(--text-2);
}
.flow-empty.show{display:block}
.flow-empty i{font-size:26px;color:var(--violet);display:block;margin-bottom:14px}

/* ============ 功能区图文 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media{position:relative;border-radius:var(--card-r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.split-media img{width:100%;height:420px;object-fit:cover}
.split-media .float-note{
  position:absolute;left:18px;bottom:18px;right:18px;
  padding:14px 16px;border-radius:14px;
  background:rgba(12,7,22,.78);backdrop-filter:blur(8px);
  border:1px solid var(--line);font-size:13.5px;color:var(--text-2);
}
.split-media .float-note strong{color:var(--primary);display:block;font-size:15px;margin-bottom:2px}
.feature-list{display:flex;flex-direction:column;gap:16px;margin-top:26px}
.feature-list li{
  display:flex;gap:14px;padding:18px 20px;border-radius:16px;
  background:var(--panel);border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.feature-list li:hover{border-color:var(--line-strong);transform:translateX(4px)}
.feature-list i{
  flex-shrink:0;width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:rgba(165,107,255,.14);color:var(--violet);font-size:15px;
}
.feature-list h4{font-size:16px;margin-bottom:4px}
.feature-list p{font-size:14px;color:var(--text-2)}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.scene-card{
  padding:28px 24px;border-radius:var(--card-r);
  background:linear-gradient(160deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease;
}
.scene-card:hover{transform:translateY(-6px);border-color:var(--line-strong)}
.scene-card .num{
  font-size:28px;font-weight:800;color:transparent;
  -webkit-text-stroke:1px rgba(34,227,184,.7);
  margin-bottom:14px;display:block;
}
.scene-card h3{font-size:19px;margin-bottom:10px}
.scene-card p{color:var(--text-2);font-size:14.5px;margin-bottom:16px}
.scene-card ul{display:flex;flex-direction:column;gap:8px}
.scene-card ul li{display:flex;gap:8px;font-size:14px;color:var(--text-2)}
.scene-card ul li i{color:var(--primary);font-size:12px;margin-top:7px}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  background:var(--panel);border:1px solid var(--line)!important;
  border-radius:16px!important;margin-bottom:14px;overflow:hidden;
}
.accordion-button{
  background:transparent!important;color:var(--text)!important;
  font-weight:700;font-size:16.5px;padding:20px 22px;box-shadow:none!important;
  border-left:3px solid transparent;transition:all .25s ease;
}
.accordion-button:not(.collapsed){color:var(--primary)!important;background:rgba(34,227,184,.06)!important;border-left-color:var(--primary)}
.accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  width:auto;height:auto;font-size:14px;color:var(--text-3);transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{content:"\f068";color:var(--primary)}
.accordion-body{padding:0 22px 22px;color:var(--text-2);font-size:15px}

/* ============ CTA ============ */
.cta-band{
  position:relative;border-radius:24px;overflow:hidden;
  background:linear-gradient(100deg,rgba(34,227,184,.92),rgba(255,107,61,.9));
  padding:52px 48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.14) 0 2px,transparent 2px 18px);
  opacity:.5;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:center}
.cta-inner h2{color:#0A1F1A;font-size:clamp(22px,3vw,32px);margin-bottom:12px}
.cta-inner p{color:rgba(10,31,26,.82);font-size:15.5px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.btn-dark{
  display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;
  background:#12101F;color:var(--text);font-weight:700;font-size:15px;
  transition:transform .2s ease,background .2s ease;
}
.btn-dark:hover{transform:translateY(-2px);background:#1B1230;color:var(--text)}
.btn-light{
  display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:999px;
  background:rgba(255,255,255,.9);color:#123;font-weight:700;font-size:15px;
  transition:transform .2s ease;
}
.btn-light:hover{transform:translateY(-2px);color:#123}

/* ============ 表单 ============ */
.form-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--card-r);
  padding:34px;box-shadow:var(--shadow-card);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;color:var(--text-2);font-weight:600}
.field input,.field select,.field textarea{
  background:#150E26;border:1px solid var(--line);border-radius:var(--input-r);
  padding:12px 14px;color:var(--text);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(34,227,184,.14);
}
.field textarea{resize:vertical;min-height:110px}
.field .hint{font-size:13px;color:var(--text-3)}
.field .err{font-size:13px;color:var(--accent);display:none}
.field.has-error input,.field.has-error select{border-color:var(--accent)}
.field.has-error .err{display:block}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:6px}
.form-ok{
  display:none;margin-top:16px;padding:14px 16px;border-radius:12px;
  background:rgba(34,227,184,.1);border:1px solid var(--line-strong);color:var(--primary);font-size:14px;
}
.form-ok.show{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:18px;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{color:var(--text-2);font-size:14px;transition:color .2s ease}
.footer-col ul a:hover{color:var(--primary)}
.footer-contact li{display:flex;gap:10px;color:var(--text-2);font-size:14px;align-items:flex-start}
.footer-contact i{color:var(--primary);margin-top:5px;font-size:13px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 26px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ============ 浮动控件 ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:1040;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--panel-2);border:1px solid var(--line-strong);color:var(--primary);
  opacity:0;visibility:hidden;transition:all .25s ease;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:rgba(34,227,184,.14);transform:translateY(-3px)}
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1035;
  display:none;gap:12px;align-items:center;justify-content:space-between;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(12,7,22,.94);backdrop-filter:blur(12px);border-top:1px solid var(--line);
}
.mobile-cta span{font-size:13px;color:var(--text-2)}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  :root{--sec-pad:84px}
  .nav-links a{padding:8px 10px;font-size:14px}
}
@media (max-width:1024px){
  :root{--sec-pad:72px}
  .nav-links{display:none}
  .nav-burger{display:grid}
  .nav-cta .btn-neon{display:none}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-sub{max-width:none}
  .split{grid-template-columns:1fr;gap:34px}
  .split-media img{height:340px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:1fr 1fr}
  .trust-grid{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(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:768px){
  :root{--sec-pad:56px;--gap:18px}
  .site-topbar{font-size:12px}
  .topbar-mid{display:none}
  .mainnav,.mainnav-inner{height:64px}
  .brand-text small{display:none}
  .hero{padding:48px 0 56px}
  .hero-visual{min-height:360px}
  .phone-card{width:220px}
  .phone-card img{height:340px}
  .mini-card{width:120px}
  .mini-card img{height:92px}
  .flow-grid{grid-template-columns:1fr}
  .h-a .flow-cover,.h-b .flow-cover,.h-c .flow-cover{height:220px}
  .scene-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .cta-band{padding:36px 24px;border-radius:20px}
  .form-panel{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-cta{display:flex}
  body{padding-bottom:70px}
  .to-top{bottom:88px;right:16px}
}
@media (max-width:520px){
  .hero h1{font-size:27px}
  .hero-actions .btn-neon,.hero-actions .btn-ghost{width:100%;justify-content:center}
  .trust-item{padding:22px 12px}
  .trust-num{font-size:24px}
  .flow-body{padding:18px 16px 20px}
  .cta-actions .btn-dark,.cta-actions .btn-light{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --bg:#120B1F;
  --panel:#1B1230;
  --raise:#241A3D;
  --deep:#0C0716;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#22E3B8;
  --coral:#FF6B3D;
  --violet:#A56BFF;
  --text:#F2EEFF;
  --text-2:#B6AECB;
  --text-3:#7E7794;
  --card-r:18px;
  --img-r:14px;
  --input-r:12px;
  --shadow-card:0 20px 48px -24px rgba(0,0,0,.75);
  --shadow-neon:0 16px 36px -18px rgba(34,227,184,.45);
  --container:1200px;
  --wide:1320px;
  --font:"HarmonyOS Sans SC","PingFang SC","MiSans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(58% 40% at 8% 0%, rgba(34,227,184,.10), transparent 62%),
    radial-gradient(52% 42% at 92% 4%, rgba(165,107,255,.13), transparent 64%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  background-size:auto,auto,100% 44px,44px 100%;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--neon);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:#5cf0cd;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px;}

.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
.container-wide{width:100%;max-width:var(--wide);margin:0 auto;padding:0 20px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1035;
  background:rgba(18,11,31,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.mainnav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;max-width:var(--wide);margin:0 auto;padding:0 20px;
}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;display:grid;place-items:center;
  border-radius:12px;color:var(--deep);font-size:17px;
  background:linear-gradient(135deg,var(--neon),#18b995);
  box-shadow:0 10px 24px -12px rgba(34,227,184,.8);
}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.01em;line-height:1.2;display:flex;flex-direction:column;}
.brand-text small{font-size:11.5px;font-weight:400;color:var(--text-3);letter-spacing:.06em;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;padding:8px 12px;font-size:14.5px;color:var(--text-2);
  border-radius:10px;transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-links a.active{color:var(--text);font-weight:700;}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--neon);border-radius:2px;box-shadow:0 0 12px rgba(34,227,184,.8);
}
.nav-cta{display:flex;align-items:center;gap:12px;}
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border:0;border-radius:999px;cursor:pointer;
  font-size:14.5px;font-weight:700;color:#0C0716;
  background:linear-gradient(135deg,var(--neon),#1ecfa6);
  box-shadow:var(--shadow-neon);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.btn-neon:hover{color:#0C0716;filter:brightness(1.07);transform:translateY(-2px);box-shadow:0 22px 44px -18px rgba(34,227,184,.62);}
.btn-neon:active{transform:translateY(0);filter:brightness(.98);}
.btn-neon.btn-sm{padding:10px 18px;font-size:13.5px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;cursor:pointer;
  border:1px solid rgba(34,227,184,.45);background:transparent;
  color:var(--neon);font-size:14.5px;font-weight:600;
  transition:background .22s ease,transform .22s ease,border-color .22s ease;
}
.btn-ghost:hover{background:rgba(34,227,184,.10);color:var(--neon);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;color:var(--text-2);
  font-size:14px;border-bottom:1px solid transparent;padding-bottom:2px;
}
.btn-line:hover{color:var(--neon);border-bottom-color:rgba(34,227,184,.55);}
.nav-burger{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text);font-size:16px;cursor:pointer;
}
.nav-burger:hover{background:rgba(34,227,184,.12);color:var(--neon);}

/* 移动端抽屉 */
.drawer{background:var(--panel);color:var(--text);border-left:1px solid var(--line);width:290px;}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.drawer-title{font-size:15px;font-weight:800;}
.btn-close-x{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);color:var(--text);cursor:pointer;
}
.btn-close-x:hover{color:var(--neon);}
.drawer .offcanvas-body{padding:16px 20px 28px;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border-radius:12px;color:var(--text-2);
  font-size:15px;border:1px solid transparent;
}
.drawer-link:hover{background:var(--raise);color:var(--text);border-color:var(--line);}
.drawer-link.active{color:var(--neon);background:rgba(34,227,184,.09);border-color:rgba(34,227,184,.28);}
.drawer-cta{margin-top:18px;display:block;text-align:center;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative;}
.section.tight{padding:76px 0;}
.section-alt{background:linear-gradient(180deg,rgba(27,18,48,.72),rgba(18,11,31,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--neon);font-weight:700;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--neon);border-radius:2px;}
h1{font-size:clamp(28px,5vw,52px);font-weight:800;line-height:1.16;letter-spacing:-.01em;}
h2{font-size:clamp(24px,3.4vw,34px);font-weight:800;line-height:1.25;letter-spacing:-.01em;}
h3{font-size:20px;font-weight:700;line-height:1.4;}
.lead{color:var(--text-2);font-size:16.5px;margin-top:16px;}
.muted{color:var(--text-3);font-size:13.5px;}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(34,227,184,.12);color:var(--neon);border:1px solid rgba(34,227,184,.3);
}
.tag.tag-coral{background:rgba(255,107,61,.13);color:#ff9268;border-color:rgba(255,107,61,.32);}
.tag.tag-violet{background:rgba(165,107,255,.14);color:#c2a0ff;border-color:rgba(165,107,255,.32);}
.tag.tag-plain{background:rgba(255,255,255,.06);color:var(--text-2);border-color:var(--line-strong);}

.card-x{
  background:linear-gradient(180deg,var(--panel),#170F29);
  border:1px solid var(--line);border-radius:var(--card-r);
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.card-x:hover{transform:translateY(-4px);border-color:rgba(34,227,184,.32);}

/* ============ Hero ============ */
.page-hero{padding:72px 0 84px;position:relative;}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.16;mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
}
.page-hero > *{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:5fr 6fr;gap:56px;align-items:center;}
.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);}
.crumb a:hover{color:var(--neon);}
.crumb i{font-size:10px;color:var(--text-3);}
.hero-copy h1 span{color:var(--neon);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.badge-x{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;
  border-radius:999px;background:rgba(255,255,255,.045);
  border:1px solid var(--line);font-size:13px;color:var(--text-2);
}
.badge-x i{color:var(--neon);}
.hero-visual{position:relative;min-height:420px;display:flex;justify-content:center;align-items:center;}
.phone-card{
  position:relative;width:min(360px,86%);aspect-ratio:4/5;
  border-radius:22px;overflow:hidden;border:1px solid var(--line-strong);
  background:var(--panel);box-shadow:0 30px 70px -30px rgba(0,0,0,.9);
}
.phone-card img{width:100%;height:100%;object-fit:cover;}
.phone-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,7,22,.15),rgba(12,7,22,.82));
}
.phone-tag{position:absolute;top:16px;left:16px;z-index:2;}
.phone-bar{position:absolute;left:16px;right:16px;bottom:18px;z-index:2;}
.phone-bar span{display:block;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--neon),var(--coral));width:68%;}
.phone-bar small{display:block;margin-top:8px;font-size:12.5px;color:var(--text-2);}
.float-card{
  position:absolute;display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:14px;font-size:13px;color:var(--text-2);
  background:rgba(36,26,61,.94);border:1px solid var(--line-strong);
  box-shadow:0 18px 40px -22px rgba(0,0,0,.9);
}
.float-card b{color:var(--text);font-weight:700;}
.float-card i{color:var(--neon);}
.float-a{top:12%;left:-4%;}
.float-b{bottom:14%;right:-4%;}
.float-b i{color:var(--violet);}

/* ============ 对比卡 ============ */
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.compare-card{padding:28px 24px;display:flex;flex-direction:column;gap:18px;}
.compare-card.hl{border-color:rgba(34,227,184,.45);box-shadow:0 24px 56px -26px rgba(34,227,184,.4);}
.compare-head h3{font-size:21px;margin-top:12px;}
.compare-head p{color:var(--text-2);font-size:14px;margin-top:8px;}
.compare-facts{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line);}
.compare-facts > div{padding:12px 0;border-bottom:1px solid var(--line);}
.compare-facts dt{font-size:12.5px;color:var(--text-3);letter-spacing:.04em;margin-bottom:4px;}
.compare-facts dd{font-size:14.5px;color:var(--text);line-height:1.7;}
.compare-card .btn-ghost{margin-top:auto;width:100%;}

/* ============ 榜单 ============ */
.rank-list{display:flex;flex-direction:column;gap:16px;counter-reset:rank;}
.rank-item{
  display:grid;grid-template-columns:96px 1fr;gap:24px;align-items:start;
  padding:26px 26px;border-radius:var(--card-r);
  background:linear-gradient(180deg,var(--panel),#170F29);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease;
}
.rank-item:hover{transform:translateX(4px);border-color:rgba(165,107,255,.36);}
.rank-num{
  font-size:38px;font-weight:800;line-height:1;letter-spacing:-.02em;
  color:transparent;-webkit-text-stroke:1px rgba(34,227,184,.7);
  text-shadow:0 0 22px rgba(34,227,184,.28);
}
.rank-item:nth-child(2n) .rank-num{-webkit-text-stroke-color:rgba(165,107,255,.75);text-shadow:0 0 22px rgba(165,107,255,.3);}
.rank-item:nth-child(3n) .rank-num{-webkit-text-stroke-color:rgba(255,107,61,.75);text-shadow:0 0 22px rgba(255,107,61,.28);}
.rank-body h3{font-size:19px;}
.rank-body p{color:var(--text-2);font-size:15px;margin-top:8px;}
.rank-body .btn-line{margin-top:12px;}

/* ============ 图文建议 ============ */
.split{display:grid;grid-template-columns:5fr 6fr;gap:48px;align-items:center;}
.split-media{border-radius:var(--card-r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.check-list{display:flex;flex-direction:column;gap:20px;margin-top:28px;}
.check-list li{display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:start;}
.check-ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(34,227,184,.12);border:1px solid rgba(34,227,184,.26);color:var(--neon);font-size:16px;
}
.check-list li:nth-child(2) .check-ico{background:rgba(165,107,255,.14);border-color:rgba(165,107,255,.3);color:#c2a0ff;}
.check-list li:nth-child(3) .check-ico{background:rgba(255,107,61,.13);border-color:rgba(255,107,61,.3);color:#ff9268;}
.check-list h3{font-size:17px;}
.check-list p{color:var(--text-2);font-size:14.5px;margin-top:6px;}

/* ============ FAQ ============ */
.faq{max-width:920px;}
.faq .accordion-item{
  background:linear-gradient(180deg,var(--panel),#170F29);
  border:1px solid var(--line);border-radius:16px;margin-bottom:14px;overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq .accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(34,227,184,.45);background:linear-gradient(180deg,#221741,#180F2C);}
.faq .accordion-button{
  background:transparent;color:var(--text);font-size:16.5px;font-weight:700;
  padding:20px 22px;box-shadow:none;border-radius:16px;
}
.faq .accordion-button:not(.collapsed){color:var(--neon);box-shadow:none;}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid rgba(34,227,184,.5);outline-offset:-2px;}
.faq .accordion-button::after{
  content:"+";background-image:none;width:28px;height:28px;flex:0 0 28px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:50%;
  color:var(--neon);font-size:17px;font-weight:700;transform:none;
}
.faq .accordion-button:not(.collapsed)::after{content:"–";border-color:rgba(34,227,184,.55);color:var(--neon);}
.faq .accordion-body{padding:0 22px 22px;color:var(--text-2);font-size:15px;line-height:1.85;border-left:3px solid rgba(34,227,184,.55);margin-left:22px;padding-left:18px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  padding:52px 48px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  background:linear-gradient(120deg,rgba(34,227,184,.92),rgba(165,107,255,.86) 52%,rgba(255,107,61,.9));
  box-shadow:0 30px 70px -34px rgba(34,227,184,.6);
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.24;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(12,7,22,.28) 0 2px,transparent 2px 14px);
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{color:#0C0716;font-size:clamp(22px,2.8vw,30px);}
.cta-band p{color:rgba(12,7,22,.78);font-size:15.5px;margin-top:10px;max-width:620px;}
.cta-band .btn-neon{background:#0C0716;color:var(--neon);box-shadow:0 18px 40px -20px rgba(0,0,0,.85);}
.cta-band .btn-neon:hover{color:var(--neon);}
.cta-band .btn-ghost{border-color:rgba(12,7,22,.5);color:#0C0716;}
.cta-band .btn-ghost:hover{background:rgba(12,7,22,.14);color:#0C0716;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 表单 ============ */
.form-panel{display:grid;grid-template-columns:5fr 6fr;gap:48px;align-items:start;}
.check-form{padding:30px 28px;border-radius:var(--card-r);background:linear-gradient(180deg,var(--panel),#170F29);border:1px solid var(--line);box-shadow:var(--shadow-card);}
.form-row{margin-bottom:20px;}
.form-row label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;}
.check-form select,.check-form textarea{
  width:100%;padding:13px 15px;border-radius:var(--input-r);
  background:rgba(12,7,22,.72);border:1px solid var(--line-strong);
  color:var(--text);font-size:15px;font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.check-form select:focus,.check-form textarea:focus{
  outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(34,227,184,.16);
}
.check-form textarea{resize:vertical;min-height:96px;}
.form-hint{margin-top:14px;font-size:13.5px;color:var(--neon);}
.form-err{color:#ff8b6b;}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);border-top:1px solid var(--line);padding:72px 0 28px;margin-top:16px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--text-2);font-size:14.5px;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:var(--text-2);font-size:14.5px;}
.footer-col a:hover{color:var(--neon);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:var(--text-2);font-size:14.5px;}
.footer-contact i{color:var(--neon);margin-top:5px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--text-3);font-size:13.5px;
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--neon);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-links a{padding:8px 9px;font-size:13.5px;}
  .hero-grid{gap:40px;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .section.tight{padding:60px 0;}
  .nav-links{display:none;}
  .nav-burger{display:inline-flex;align-items:center;justify-content:center;}
  .nav-cta .btn-neon{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:48px;}
  .page-hero{padding:52px 0 64px;}
  .hero-visual{min-height:auto;}
  .float-a{left:0;}
  .float-b{right:0;}
  .compare-grid{grid-template-columns:1fr;gap:18px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .form-panel{grid-template-columns:1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:575.98px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .brand-text{font-size:15px;}
  .brand-text small{display:none;}
  .mainnav-inner{height:64px;}
  .rank-item{grid-template-columns:1fr;gap:14px;padding:22px 20px;}
  .rank-num{font-size:30px;}
  .float-card{padding:8px 12px;font-size:12px;}
  .float-a{top:6%;}
  .float-b{bottom:6%;}
  .cta-band{padding:32px 22px;border-radius:20px;}
  .cta-actions{width:100%;}
  .cta-actions a{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:10px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}