/* roulang page: index */
:root{
  --bg-0:#070A12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --primary:#1FE5C0;
  --primary-deep:#0FA98C;
  --primary-soft:rgba(31,229,192,.14);
  --accent:#FFB020;
  --accent-deep:#E08A00;
  --text-1:#E9EFF8;
  --text-2:#9AA9BF;
  --text-3:#5F6E85;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(31,229,192,.38);
  --glass:rgba(255,255,255,.055);
  --glass-brd:rgba(255,255,255,.12);
  --radius-pill:999px;
  --radius-card:20px;
  --radius-inner:14px;
  --shadow-card:0 18px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 8px 30px rgba(31,229,192,.32), 0 0 0 1px rgba(31,229,192,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--text-1);
  --bs-primary:var(--primary);
  --bs-link-color:var(--primary);
  --bs-link-hover-color:var(--primary);
  --bs-border-color:var(--line);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--primary);}
p{margin:0 0 .9em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.2px;color:var(--text-1);}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.18;}
h2{font-size:clamp(23px,2.6vw,36px);line-height:1.3;}
h3{font-size:19px;line-height:1.5;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:rgba(31,229,192,.28);color:#fff;}
.num{font-family:"Barlow","Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.2px;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:88px 0;position:relative;}
.section-alt{background:var(--bg-1);}
.section-line{border-top:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.4px;color:var(--primary);
  text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(31,229,192,.8);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px;}
.sec-head p{color:var(--text-2);margin:12px 0 0;max-width:640px;font-size:15px;}
.sec-link{font-size:14px;color:var(--primary);white-space:nowrap;display:inline-flex;align-items:center;gap:6px;}
.sec-link i{transition:transform .25s var(--ease);}
.sec-link:hover i{transform:translateX(4px);}

/* ============ 悬浮胶囊导航 ============ */
.site-header{position:sticky;top:16px;z-index:1030;padding:0 20px;}
.nav-shell{
  max-width:1180px;margin:0 auto;height:60px;
  display:flex;align-items:center;gap:18px;
  padding:0 22px;border-radius:var(--radius-pill);
  background:rgba(12,18,32,.72);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border:1px solid var(--glass-brd);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.scrolled .nav-shell{background:rgba(12,18,32,.88);box-shadow:var(--shadow-card);}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:16px;white-space:nowrap;}
.brand:hover{color:var(--text-1);}
.brand-mark{width:12px;height:12px;border-radius:4px;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 0 14px rgba(31,229,192,.75);flex:0 0 auto;}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-item{
  position:relative;padding:8px 14px;font-size:15px;color:var(--text-2);border-radius:var(--radius-pill);
  white-space:nowrap;transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-item:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-item.active{color:var(--primary);}
.nav-item.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 10px rgba(31,229,192,.9);
}
.nav-cta{margin-left:12px;}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:var(--radius-pill);
  background:var(--glass);border:1px solid var(--glass-brd);color:var(--text-1);
  align-items:center;justify-content:center;font-size:16px;
}

/* ============ 按钮 ============ */
.kbtn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;text-align:center;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .28s var(--ease),background .28s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.kbtn i{transition:transform .25s var(--ease);}
.kbtn:hover i{transform:translateX(3px);}
.kbtn-solid{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04211C;box-shadow:var(--shadow-glow);
}
.kbtn-solid:hover{color:#04211C;filter:brightness(1.08);box-shadow:0 10px 40px rgba(31,229,192,.45),0 0 0 1px rgba(31,229,192,.6);transform:translateY(-2px);}
.kbtn-line{background:transparent;border-color:var(--line-strong);color:var(--primary);}
.kbtn-line:hover{background:var(--primary-soft);color:var(--primary);transform:translateY(-2px);}
.kbtn-amber{background:linear-gradient(135deg,var(--accent),var(--accent-deep));color:#2A1A00;box-shadow:0 8px 30px rgba(255,176,32,.3);}
.kbtn-amber:hover{color:#2A1A00;filter:brightness(1.06);transform:translateY(-2px);}
.kbtn-sm{padding:9px 18px;font-size:14px;}
.kbtn:focus-visible,.nav-item:focus-visible,.brand:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

/* ============ Hero ============ */
.hero{
  position:relative;margin-top:-76px;padding:168px 0 88px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(7,10,18,.72) 0%,rgba(7,10,18,.86) 55%,var(--bg-0) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  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:56px 56px;
  mask-image:linear-gradient(180deg,#000 0%,transparent 82%);
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 82%);
}
.hero .wrap{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:var(--radius-pill);
  background:var(--primary-soft);border:1px solid var(--line-strong);color:var(--primary);
  font-size:13px;margin-bottom:20px;
}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 0 rgba(31,229,192,.7);animation:pulse 2s infinite;}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(31,229,192,.6);}70%{box-shadow:0 0 0 10px rgba(31,229,192,0);}100%{box-shadow:0 0 0 0 rgba(31,229,192,0);}}
.hero h1{margin-bottom:18px;}
.hero h1 span{color:var(--primary);}
.hero-sub{color:var(--text-2);font-size:17px;max-width:540px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:26px;}
.qr-box{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:var(--radius-inner);background:var(--glass);border:1px solid var(--glass-brd);}
.qr-img{
  width:64px;height:64px;border-radius:10px;flex:0 0 auto;
  background-color:#E9EFF8;
  background-image:repeating-conic-gradient(#0C1220 0 25%,#E9EFF8 0 50%);
  background-size:11px 11px;
}
.qr-box span{font-size:12px;color:var(--text-2);line-height:1.5;}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;padding-top:22px;border-top:1px solid var(--line);}
.hero-meta div{font-size:13px;color:var(--text-3);}
.hero-meta strong{display:block;font-size:19px;color:var(--text-1);font-weight:700;}
.hero-visual{position:relative;}
.hero-card{
  border-radius:var(--radius-card);overflow:hidden;position:relative;
  background:var(--glass);border:1px solid var(--glass-brd);box-shadow:var(--shadow-card);
}
.hero-card img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-float{
  position:absolute;left:-22px;bottom:26px;padding:16px 20px;border-radius:var(--radius-inner);
  background:rgba(12,18,32,.9);border:1px solid var(--glass-brd);box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.hero-float .lbl{font-size:12px;color:var(--text-3);}
.hero-float .val{font-size:22px;font-weight:700;color:var(--primary);}
.hero-float .sub{font-size:12px;color:var(--text-2);}

/* ============ 价值区 ============ */
.value-grid{display:grid;grid-template-columns:2fr 1fr;gap:22px;}
.glass-card{
  background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.glass-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 30px rgba(31,229,192,.16);}
.value-main{overflow:hidden;display:flex;flex-direction:column;}
.value-main img{width:100%;aspect-ratio:16/8;object-fit:cover;}
.value-main-body{padding:28px 30px 30px;}
.value-main-body h3{font-size:22px;margin-bottom:12px;}
.value-main-body p{color:var(--text-2);font-size:15px;margin:0;}
.value-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;color:var(--primary);background:var(--primary-soft);border:1px solid rgba(31,229,192,.28);
}
.tag-amber{color:var(--accent);background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.3);}
.value-list{display:flex;flex-direction:column;gap:14px;}
.value-row{
  display:flex;align-items:center;gap:14px;padding:20px 22px;
  border-radius:var(--radius-inner);background:var(--glass);border:1px solid var(--glass-brd);
  transition:transform .28s var(--ease),border-color .28s var(--ease),background .28s var(--ease);
}
.value-row:hover{transform:translateX(6px);border-color:var(--line-strong);background:rgba(31,229,192,.06);}
.value-ico{
  width:42px;height:42px;flex:0 0 auto;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-size:17px;
}
.value-row h4{font-size:15px;margin:0 0 3px;font-weight:700;}
.value-row p{font-size:13px;color:var(--text-2);margin:0;line-height:1.6;}
.value-row .arrow{margin-left:auto;color:var(--text-3);font-size:14px;transition:transform .25s var(--ease),color .25s var(--ease);}
.value-row:hover .arrow{color:var(--primary);transform:translateX(3px);}

/* ============ 截图轮播 ============ */
.shot-track{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 22px;margin:0 -4px;
  scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 auto;width:400px;scroll-snap-align:start;
  border-radius:var(--radius-card);background:var(--glass);border:1px solid var(--glass-brd);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .28s var(--ease),border-color .28s var(--ease);
}
.shot-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.shot-img{position:relative;border-bottom:1px solid var(--glass-brd);}
.shot-img img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.shot-img::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.14);border-radius:0;}
.shot-body{padding:20px 22px 24px;}
.shot-body h3{font-size:17px;margin-bottom:8px;}
.shot-body p{font-size:14px;color:var(--text-2);margin:0;}
.shot-ctrl{display:flex;align-items:center;gap:16px;margin-top:6px;}
.shot-arrow{
  width:44px;height:44px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line-strong);color:var(--primary);cursor:pointer;
  transition:box-shadow .28s var(--ease),background .28s var(--ease),transform .22s var(--ease);
}
.shot-arrow:hover{background:var(--primary-soft);box-shadow:0 0 24px rgba(31,229,192,.35);transform:translateY(-2px);}
.shot-dots{display:flex;align-items:center;gap:8px;margin-left:auto;}
.shot-dots .dot{width:28px;height:4px;border-radius:4px;background:rgba(255,255,255,.16);transition:width .3s var(--ease),background .3s var(--ease);}
.shot-dots .dot.on{width:44px;background:var(--primary);box-shadow:0 0 12px rgba(31,229,192,.7);}

/* ============ 系统要求 ============ */
.spec-shell{
  border-radius:var(--radius-card);background:var(--glass);border:1px solid var(--glass-brd);
  box-shadow:var(--shadow-card);padding:30px 34px;
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
}
.spec-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.spec-tab{
  padding:9px 20px;border-radius:var(--radius-pill);font-size:14px;cursor:pointer;
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  transition:all .25s var(--ease);
}
.spec-tab:hover{color:var(--text-1);border-color:rgba(255,255,255,.22);}
.spec-tab.active{background:var(--primary-soft);border-color:var(--line-strong);color:var(--primary);}
.spec-sum{font-size:14px;color:var(--text-2);padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:6px;}
.spec-panel{display:none;}
.spec-panel.show{display:block;}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:48px;padding:6px 0;border-bottom:1px solid var(--line);
}
.spec-row:last-child{border-bottom:0;}
.spec-row .k{font-size:14px;color:var(--text-2);}
.spec-row .v{font-size:15px;color:var(--text-1);font-weight:600;text-align:right;}

/* ============ 评价墙 ============ */
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start;}
.wall-col{display:flex;flex-direction:column;gap:22px;}
.wall-col:nth-child(2){margin-top:26px;}
.review{
  padding:24px 24px 20px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--glass-brd);box-shadow:var(--shadow-card);
  transition:transform .28s var(--ease),border-color .28s var(--ease);
}
.review:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.stars{color:var(--primary);font-size:13px;letter-spacing:2px;margin-bottom:12px;}
.review p{font-size:14px;color:var(--text-2);margin:0 0 16px;line-height:1.8;}
.review-meta{display:flex;align-items:center;gap:10px;padding-top:14px;border-top:1px solid var(--line);}
.avatar{
  width:34px;height:34px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#04211C;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
}
.review-meta .name{font-size:13px;color:var(--text-1);font-weight:600;}
.review-meta .dev{font-size:12px;color:var(--text-3);}
.review-meta .badge-dev{margin-left:auto;font-size:11px;padding:3px 10px;border-radius:var(--radius-pill);background:rgba(255,176,32,.12);color:var(--accent);border:1px solid rgba(255,176,32,.26);}

/* ============ 下载面板 ============ */
.download-panel{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--glass-brd);box-shadow:var(--shadow-card);
  padding:48px 44px;text-align:center;
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
}
.download-panel::before{
  content:"";position:absolute;left:50%;top:-140px;width:640px;height:340px;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(31,229,192,.18) 0%,rgba(31,229,192,0) 70%);pointer-events:none;
}
.download-panel h2{position:relative;margin-bottom:14px;}
.download-panel .lead{position:relative;color:var(--text-2);font-size:15px;max-width:620px;margin:0 auto 30px;}
.dl-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;position:relative;}
.dl-note{position:relative;margin-top:22px;font-size:13px;color:var(--text-3);}
.dl-note i{color:var(--primary);margin-right:6px;}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.news-card{
  border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--glass-brd);box-shadow:var(--shadow-card);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 26px rgba(31,229,192,.14);}
.news-card.lead-card{grid-column:span 2;grid-row:span 2;}
.news-thumb{position:relative;overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-card.lead-card .news-thumb img{aspect-ratio:16/9;}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-cat{
  display:inline-flex;align-self:flex-start;padding:4px 11px;border-radius:var(--radius-pill);
  font-size:11px;color:var(--primary);background:var(--primary-soft);border:1px solid rgba(31,229,192,.26);margin-bottom:12px;
}
.news-body h3{font-size:16px;line-height:1.55;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card.lead-card .news-body h3{font-size:21px;}
.news-body p{font-size:13px;color:var(--text-2);margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--text-3);}
.news-foot .more{color:var(--primary);font-size:12px;}
.empty-state{
  height:160px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  border-radius:var(--radius-card);border:1px dashed var(--line);color:var(--text-3);font-size:14px;
}
.empty-state i{font-size:26px;color:var(--text-3);}
.empty-state a{color:var(--primary);}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-btn-color:var(--text-1);--bs-accordion-active-color:var(--primary);--bs-accordion-active-bg:transparent;}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.accordion-button{
  position:relative;background:transparent;color:var(--text-1);
  font-size:17px;font-weight:600;padding:22px 52px 22px 18px;
  border-radius:0!important;box-shadow:none!important;
}
.accordion-button:not(.collapsed){color:var(--primary);background:transparent;}
.accordion-button::after{display:none!important;}
.accordion-button::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;background:var(--primary);
  box-shadow:0 0 12px rgba(31,229,192,.9);transition:height .25s var(--ease);
}
.accordion-button:not(.collapsed)::before{height:26px;}
.faq-mark{position:absolute;right:16px;top:50%;width:16px;height:16px;transform:translateY(-50%);}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--text-2);border-radius:2px;transition:transform .25s var(--ease),background .25s var(--ease);}
.faq-mark::before{left:0;top:7px;width:16px;height:2px;}
.faq-mark::after{left:7px;top:0;width:2px;height:16px;}
.accordion-button:not(.collapsed) .faq-mark::after{transform:rotate(90deg);background:var(--primary);}
.accordion-button:not(.collapsed) .faq-mark::before{background:var(--primary);}
.accordion-body{padding:0 52px 24px 18px;color:var(--text-2);font-size:15px;line-height:1.85;}

/* ============ CTA 条 ============ */
.cta-bar{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--glass-brd);box-shadow:var(--shadow-card);
  padding:34px 40px;display:flex;align-items:center;justify-content:space-between;gap:26px;
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
}
.cta-bar::before{
  content:"";position:absolute;right:-80px;top:-80px;width:360px;height:300px;
  background:radial-gradient(circle,rgba(31,229,192,.16) 0%,rgba(31,229,192,0) 70%);pointer-events:none;
}
.cta-bar h3{font-size:22px;margin-bottom:6px;}
.cta-bar p{margin:0;color:var(--text-2);font-size:14px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid transparent;position:relative;padding:64px 0 0;margin-top:20px;}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,229,192,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:46px;}
.footer-brand .brand{margin-bottom:14px;font-size:17px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:300px;}
.footer-col h4{font-size:14px;color:var(--primary);margin-bottom:16px;font-weight:700;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:transform .22s var(--ease),color .22s var(--ease);}
.footer-col a:hover{color:var(--text-1);transform:translateX(2px);}
.footer-note{font-size:13px;color:var(--text-3);line-height:1.8;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .news-grid{grid-template-columns:repeat(3,1fr);}
  .shot-card{width:360px;}
}
@media (max-width:992px){
  .section{padding:64px 0;}
  .hero{padding:150px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-float{left:12px;}
  .value-grid{grid-template-columns:1fr;}
  .wall{grid-template-columns:repeat(2,1fr);}
  .wall-col:nth-child(2){margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    position:absolute;left:20px;right:20px;top:74px;flex-direction:column;align-items:stretch;gap:6px;
    background:rgba(12,18,32,.96);border:1px solid var(--glass-brd);border-radius:var(--radius-card);
    padding:16px;box-shadow:var(--shadow-card);margin-left:0;
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    display:none;
  }
  .nav-menu.open{display:flex;}
  .nav-item.active::after{display:none;}
  .nav-item.active{background:var(--primary-soft);}
  .nav-cta{margin-left:0;margin-top:8px;width:100%;}
}
@media (max-width:768px){
  .section{padding:44px 0;}
  .wrap{padding:0 20px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .news-grid{grid-template-columns:1fr;}
  .news-card.lead-card{grid-column:span 1;grid-row:span 1;}
  .news-card.lead-card .news-body h3{font-size:18px;}
  .wall{grid-template-columns:1fr;}
  .shot-card{width:300px;}
  .spec-shell{padding:22px 20px;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:2px;padding:10px 0;}
  .spec-row .v{text-align:left;}
  .download-panel{padding:34px 22px;}
  .dl-btns{flex-direction:column;}
  .dl-btns .kbtn{width:100%;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .kbtn{width:100%;}
  .qr-box{justify-content:center;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px;}
  .cta-bar .kbtn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .accordion-button{font-size:16px;padding:18px 46px 18px 16px;}
  .accordion-body{padding:0 46px 20px 16px;}
  .shot-ctrl{flex-wrap:wrap;}
  .shot-dots{margin-left:0;}
}
@media (max-width:520px){
  .hero{padding:138px 0 52px;}
  .hero-meta{gap:18px;}
  .hero-meta strong{font-size:17px;}
  .brand{font-size:15px;}
  .shot-card{width:262px;}
}

/* roulang page: article */
:root{
  --bg-0:#070A12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --primary:#1FE5C0;
  --primary-deep:#0FA98C;
  --primary-soft:rgba(31,229,192,.14);
  --accent:#FFB020;
  --accent-deep:#E08A00;
  --text-1:#E9EFF8;
  --text-2:#9AA9BF;
  --text-3:#5F6E85;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(31,229,192,.38);
  --glass:rgba(255,255,255,.055);
  --glass-brd:rgba(255,255,255,.12);
  --radius-pill:999px;
  --radius-card:20px;
  --radius-inner:14px;
  --shadow-card:0 18px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 8px 30px rgba(31,229,192,.32), 0 0 0 1px rgba(31,229,192,.55);
  --bs-body-bg:#070A12;
  --bs-body-color:#E9EFF8;
  --bs-primary:#1FE5C0;
  --bs-link-color:#1FE5C0;
  --bs-link-hover-color:#0FA98C;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 72%);
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-deep)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
::selection{background:rgba(31,229,192,.28)}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px;position:relative;z-index:1}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:1030;padding:0 20px}
.nav-shell{
  position:relative;max-width:1180px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 14px 0 22px;
  border-radius:var(--radius-pill);
  background:rgba(12,18,32,.72);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  backdrop-filter:blur(16px) saturate(130%);
  border:1px solid var(--glass-brd);
  transition:background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled .nav-shell{background:rgba(12,18,32,.9);box-shadow:var(--shadow-card)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);text-decoration:none;flex:none}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:26px;height:26px;border-radius:9px;position:relative;flex:none;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 0 1px rgba(31,229,192,.5),0 6px 18px rgba(31,229,192,.35);
}
.brand-mark::after{content:"";position:absolute;inset:9px;border-radius:3px;background:#070A12}
.brand-text{font-weight:700;font-size:16px;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-item{
  position:relative;padding:8px 12px;border-radius:var(--radius-pill);
  color:var(--text-2);font-size:15px;text-decoration:none;white-space:nowrap;
  transition:color .25s ease, background .25s ease;
}
.nav-item:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-item.active{color:var(--primary)}
.nav-item.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(31,229,192,.7);
}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.06);border:1px solid var(--glass-brd);
  color:var(--text-1);font-size:17px;cursor:pointer;transition:.25s;
}
.nav-toggle:hover{background:var(--primary-soft);color:var(--primary)}
.nav-cta{margin-left:8px}

/* ============ 按钮 ============ */
.kbtn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);font-weight:600;font-size:15px;
  padding:13px 26px;border:1px solid transparent;cursor:pointer;
  transition:transform .28s cubic-bezier(.2,.7,.3,1), box-shadow .28s ease, background .28s ease, color .28s ease, filter .28s ease;
}
.kbtn i{transition:transform .28s ease}
.kbtn:hover i{transform:translateX(3px)}
.kbtn-solid{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#04120E;box-shadow:var(--shadow-glow)}
.kbtn-solid:hover{color:#04120E;filter:brightness(1.08);box-shadow:0 8px 40px rgba(31,229,192,.5);transform:translateY(-2px)}
.kbtn-ghost{background:transparent;color:var(--primary);border-color:rgba(31,229,192,.5)}
.kbtn-ghost:hover{background:var(--primary-soft);color:var(--primary)}
.kbtn-sm{padding:9px 18px;font-size:14px}
.kbtn:focus-visible,.nav-item:focus-visible,.nav-toggle:focus-visible,a:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;
}

/* ============ 文章页头 ============ */
.article-hero{
  position:relative;margin-top:24px;padding:52px 0 46px;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,18,.86) 0%,rgba(7,10,18,.93) 52%,var(--bg-0) 100%);
}
.article-hero .wrap{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--text-2);margin-bottom:20px}
.crumbs a{color:var(--text-2);text-decoration:none;transition:color .22s ease}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--text-3)}
.crumbs .cur{color:var(--text-3)}
.article-hero h1{
  font-size:clamp(26px,3.6vw,42px);line-height:1.28;
  max-width:900px;margin-bottom:18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:var(--text-2);font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--primary);opacity:.8}
.article-meta .chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:var(--primary-soft);border:1px solid var(--line-strong);
  color:var(--primary);font-size:13px;
}
.hero-rule{margin-top:24px;height:1px;background:linear-gradient(90deg,var(--primary),rgba(31,229,192,0));max-width:520px}

/* ============ 正文 ============ */
.article-main{padding:56px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:28px}
.article-panel{
  max-width:760px;margin:0 auto;width:100%;
}
.article-body{font-size:17px;line-height:1.9;color:var(--text-1)}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  position:relative;padding-left:16px;
  font-size:clamp(20px,2.1vw,27px);line-height:1.36;
  margin:42px 0 16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(31,229,192,.7);
}
.article-body h3{font-size:19px;color:var(--primary);margin:28px 0 10px;line-height:1.5}
.article-body h4{font-size:17px;color:var(--text-1);margin:22px 0 8px}
.article-body a{color:var(--primary);text-decoration:underline;text-decoration-style:dashed;text-underline-offset:3px}
.article-body a:hover{text-decoration-style:solid}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 1.1em}
.article-body li{margin:.42em 0;line-height:1.82}
.article-body ul li::marker{color:var(--primary)}
.article-body ol li::marker{color:var(--primary);font-variant-numeric:tabular-nums}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  border-left:3px solid var(--accent);
  background:rgba(31,229,192,.08);
  border-radius:0 var(--radius-inner) var(--radius-inner) 0;
  color:var(--text-1);font-style:normal;
}
.article-body img{border-radius:var(--radius-inner);border:1px solid var(--glass-brd);margin:22px 0}
.article-body figure{margin:24px 0}
.article-body figure img{margin:0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;font-variant-numeric:tabular-nums}
.article-body th,.article-body td{padding:12px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{color:var(--primary);font-weight:600;background:rgba(255,255,255,.03)}
.article-body code{
  background:rgba(255,255,255,.07);border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;font-size:14px;color:var(--primary);
}
.article-body hr{border:0;height:1px;background:var(--line);margin:34px 0}
.article-body>*:first-child{margin-top:0}

.article-foot{margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--glass);border:1px solid var(--glass-brd);
  color:var(--text-2);font-size:12.5px;transition:.25s ease;
}
.tag:hover{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}
.source-line{font-size:13.5px;color:var(--text-3);margin-bottom:24px;line-height:1.7}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px}

.empty-state{
  text-align:center;padding:76px 24px;
  border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--glass-brd);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.empty-state i{font-size:34px;color:var(--primary);opacity:.85;margin-bottom:16px;display:block}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px}
.empty-state .kbtn{margin-top:0}

/* ============ 相关阅读 ============ */
.rel-section{padding:72px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:26px}
.sec-head h2{font-size:clamp(21px,2.3vw,30px);line-height:1.32}
.sec-head .sub{color:var(--text-2);font-size:14.5px;margin-top:8px}
.sec-head .more{font-size:14.5px;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.sec-head .more i{transition:transform .25s ease}
.sec-head .more:hover i{transform:translateX(4px)}
.rel-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.rel-card{
  display:flex;gap:14px;align-items:center;padding:14px;
  border-radius:var(--radius-inner);
  background:var(--glass);border:1px solid var(--glass-brd);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  color:var(--text-1);text-decoration:none;
  transition:transform .28s cubic-bezier(.2,.7,.3,1), border-color .28s ease, box-shadow .28s ease;
}
.rel-card:hover{
  transform:translateY(-4px);color:var(--text-1);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-card),0 0 26px rgba(31,229,192,.18);
}
.rel-card img{width:96px;height:72px;object-fit:cover;border-radius:10px;flex:none;border:1px solid var(--glass-brd)}
.rel-card .rel-body{min-width:0}
.rel-card h3{
  font-size:15.5px;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card .rel-meta{font-size:12.5px;color:var(--text-3);display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums}
.rel-card .rel-meta .badge-soft{
  padding:2px 9px;border-radius:var(--radius-pill);
  background:var(--primary-soft);color:var(--primary);font-size:12px;
}

/* ============ CTA ============ */
.cta-section{padding:72px 0 88px}
.cta-bar{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:34px 36px;border-radius:var(--radius-card);
  background:linear-gradient(120deg,rgba(31,229,192,.12),rgba(255,176,32,.07));
  border:1px solid var(--glass-brd);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.cta-bar::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,229,192,.28),transparent 68%);
}
.cta-bar .cta-copy{position:relative;z-index:1;max-width:640px}
.cta-bar h2{font-size:clamp(20px,2.2vw,28px);line-height:1.4;margin-bottom:8px}
.cta-bar p{color:var(--text-2);font-size:14.5px}
.cta-bar .kbtn{position:relative;z-index:1}

/* ============ 页脚 ============ */
.site-footer{position:relative;margin-top:20px;background:var(--bg-1);padding:56px 0 26px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:.7;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:14px;max-width:330px;line-height:1.8}
.footer-col h4{font-size:14px;color:var(--primary);letter-spacing:.04em;margin-bottom:14px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--text-2);font-size:14px;display:inline-block;transition:color .22s ease, transform .22s ease}
.footer-col a:hover{color:var(--text-1);transform:translateX(2px)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  color:var(--text-3);font-size:13px;line-height:1.7;
}

/* ============ 响应式 ============ */
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;padding:14px;
    border-radius:var(--radius-card);
    background:rgba(12,18,32,.96);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    border:1px solid var(--glass-brd);box-shadow:var(--shadow-card);
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-item{padding:12px 14px}
  .nav-item.active::after{left:14px;right:auto;width:22px}
  .nav-cta{margin:6px 0 0;width:100%}
  .article-hero{padding:42px 0 36px}
  .rel-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767.98px){
  .site-header{top:10px;padding:0 14px}
  .nav-shell{height:56px;padding:0 12px 0 16px}
  .brand-text{font-size:15px}
  .article-main{padding:40px 0 0}
  .article-body{font-size:16.5px;line-height:1.88}
  .article-body h2{margin-top:34px}
  .rel-list{grid-template-columns:minmax(0,1fr)}
  .cta-bar{padding:26px 22px}
  .cta-bar .kbtn{width:100%}
  .foot-actions .kbtn{width:100%}
  .cta-section{padding:56px 0 68px}
  .rel-section{padding:58px 0 0}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .rel-card{flex-direction:row}
  .rel-card img{width:82px;height:64px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --bg-0:#070A12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --primary:#1FE5C0;
  --primary-deep:#0FA98C;
  --primary-soft:rgba(31,229,192,.14);
  --accent:#FFB020;
  --accent-deep:#E08A00;
  --text-1:#E9EFF8;
  --text-2:#9AA9BF;
  --text-3:#5F6E85;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(31,229,192,.38);
  --glass:rgba(255,255,255,.055);
  --glass-brd:rgba(255,255,255,.12);
  --radius-pill:999px;
  --radius-card:20px;
  --radius-inner:14px;
  --shadow-card:0 18px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 8px 30px rgba(31,229,192,.32), 0 0 0 1px rgba(31,229,192,.55);
  --bs-body-bg:#070A12;
  --bs-body-color:#E9EFF8;
  --bs-primary:#1FE5C0;
  --bs-link-color:#1FE5C0;
  --bs-link-hover-color:#0FA98C;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:120px}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  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:64px 64px, 64px 64px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--primary-deep)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.3;font-weight:700}
p{margin:0 0 .9em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.num{font-family:"Barlow","Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:16px;z-index:1030;padding:16px 20px 0}
.nav-shell{
  position:relative;
  max-width:1180px;
  margin:0 auto;
  min-height:60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:0 22px;
  border-radius:var(--radius-pill);
  background:rgba(12,18,32,.72);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  backdrop-filter:blur(16px) saturate(120%);
  border:1px solid var(--glass-brd);
  transition:background .3s ease, box-shadow .3s ease;
}
.nav-shell.is-scrolled{background:rgba(12,18,32,.9);box-shadow:var(--shadow-card)}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:17px;letter-spacing:.2px}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:22px;height:22px;border-radius:7px;flex:none;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 0 1px rgba(31,229,192,.5), 0 6px 16px rgba(31,229,192,.35);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px 6px 6px 7px;border-radius:2px;
  background:rgba(4,20,15,.85);
}
.brand-text{white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-item{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--radius-pill);
  color:var(--text-2);
  font-size:15px;
  transition:color .25s ease, background .25s ease;
}
.nav-item:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-item.active{color:var(--primary)}
.nav-item.active::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:20px;height:3px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 10px var(--primary);
}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;
  width:42px;height:42px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--glass-brd);border-radius:12px;
  color:var(--text-1);font-size:16px;cursor:pointer;transition:.25s;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--primary)}

/* ---------- 按钮 ---------- */
.kbtn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border:1px solid transparent;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;cursor:pointer;text-align:center;
  transition:transform .28s cubic-bezier(.2,.7,.3,1), box-shadow .28s ease, background .28s ease, color .28s ease, filter .28s ease;
}
.kbtn i{transition:transform .28s cubic-bezier(.2,.7,.3,1)}
.kbtn-solid{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140F;
  box-shadow:var(--shadow-glow);
}
.kbtn-solid:hover{color:#04140F;filter:brightness(1.08);box-shadow:0 10px 40px rgba(31,229,192,.5)}
.kbtn-solid:hover i{transform:translateX(3px)}
.kbtn-ghost{border-color:var(--line-strong);color:var(--primary);background:transparent}
.kbtn-ghost:hover{background:var(--primary-soft);color:var(--primary)}
.kbtn-ghost:hover i{transform:translateX(3px)}
.kbtn-sm{padding:9px 18px;font-size:14px}
.kbtn:focus-visible,.nav-item:focus-visible,.nav-toggle:focus-visible,.acc-btn:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;
}

/* ---------- 页头带 ---------- */
.page-hero{
  position:relative;
  margin-top:28px;
  border-radius:28px;
  overflow:hidden;
  border:1px solid var(--glass-brd);
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  min-height:300px;
  display:flex;
  align-items:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(7,10,18,.94) 12%, rgba(7,10,18,.72) 58%, rgba(7,10,18,.55) 100%);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:42%;
  background:linear-gradient(180deg, rgba(7,10,18,0) 0%, var(--bg-0) 100%);
}
.page-hero .wrap{position:relative;z-index:2;padding-top:52px;padding-bottom:52px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-2);margin-bottom:16px;flex-wrap:wrap}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--text-3)}
.crumbs .now{color:var(--text-3)}
.page-hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.18;
  letter-spacing:.4px;
  max-width:16em;
}
.page-hero .lead{
  margin-top:16px;
  max-width:44em;
  color:var(--text-2);
  font-size:16.5px;
  line-height:1.8;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;
  margin-top:22px;font-size:14px;color:var(--text-2);
}
.hero-meta b{color:var(--primary);font-weight:600}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.anchor-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.anchor-pills a{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--glass-brd);color:var(--text-2);
  font-size:13.5px;background:rgba(255,255,255,.04);
  transition:.25s ease;
}
.anchor-pills a:hover{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section.tight{padding-top:64px}
.section-head{max-width:720px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.6px;color:var(--primary);
  text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--primary)}
.section-head h2{font-size:clamp(23px,2.6vw,36px);line-height:1.3}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.85}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line) 22%,var(--line) 78%,transparent)}

/* ---------- 功能卡片网格 ---------- */
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ccard{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--glass-brd);
  border-radius:var(--radius-card);
  overflow:hidden;
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
  transition:transform .28s cubic-bezier(.2,.7,.3,1), border-color .28s ease, box-shadow .28s ease;
}
.ccard:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 22px 52px rgba(0,0,0,.5), 0 0 26px rgba(31,229,192,.18);
}
.ccard-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.ccard-media img{width:100%;height:100%;object-fit:cover;transition:transform .55s cubic-bezier(.2,.7,.3,1)}
.ccard:hover .ccard-media img{transform:scale(1.05)}
.ccard-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,18,0) 40%,rgba(7,10,18,.72) 100%);
}
.ctag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;color:var(--primary);
  background:var(--primary-soft);border:1px solid rgba(31,229,192,.3);
}
.ccard-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.ccard-body h3{font-size:19px;line-height:1.45}
.ccard-body p{color:var(--text-2);font-size:14.5px;line-height:1.8;margin:0}
.ccard-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--text-3);
}
.ccard-foot .link{color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.ccard-foot .link:hover{gap:10px}

/* ---------- 规格面板 ---------- */
.specs-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.spec-panel{
  background:var(--bg-1);
  border:1px solid var(--glass-brd);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-card);
}
.spec-panel h3{font-size:20px;display:flex;align-items:center;gap:10px}
.spec-panel h3 i{color:var(--primary)}
.spec-panel .hint{margin-top:10px;color:var(--text-2);font-size:14px;line-height:1.8}
.spec-list{margin-top:20px}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:48px;border-bottom:1px solid var(--line);
  font-size:14.5px;
}
.spec-list .spec-row:last-child{border-bottom:0}
.spec-row .k{color:var(--text-2)}
.spec-row .v{color:var(--text-1);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
.spec-row .v.small{font-size:13px;color:var(--text-2);font-weight:500}
.spec-summary{
  margin-top:22px;display:inline-flex;align-items:center;gap:10px;
  padding:10px 16px;border-radius:var(--radius-pill);
  background:var(--primary-soft);border:1px solid rgba(31,229,192,.28);
  font-size:13.5px;color:var(--primary);
}

/* ---------- 安装流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.flow-card{
  position:relative;
  padding:26px 22px 24px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-brd);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  transition:transform .28s cubic-bezier(.2,.7,.3,1), border-color .28s ease;
}
.flow-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,rgba(31,229,192,.22),rgba(31,229,192,.06));
  border:1px solid rgba(31,229,192,.35);
  color:var(--primary);font-weight:700;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.flow-card h3{font-size:17.5px;margin-bottom:8px}
.flow-card p{color:var(--text-2);font-size:14.5px;line-height:1.8;margin:0}

/* ---------- 保障区 ---------- */
.assure-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:stretch}
.assure-main{
  position:relative;overflow:hidden;
  padding:34px;
  border-radius:var(--radius-card);
  border:1px solid var(--glass-brd);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.assure-main::before{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(7,10,18,.94),rgba(7,10,18,.78))}
.assure-main > *{position:relative;z-index:2}
.assure-main h2{font-size:clamp(22px,2.4vw,32px)}
.assure-main p{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:34em}
.assure-main .stamp{
  display:inline-flex;align-items:center;gap:10px;margin-top:22px;
  padding:9px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);color:var(--primary);font-size:13.5px;
  background:rgba(31,229,192,.08);
}
.assure-list{display:flex;flex-direction:column;gap:14px}
.assure-row{
  display:flex;align-items:flex-start;gap:16px;
  padding:20px 22px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--glass-brd);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  transition:transform .28s cubic-bezier(.2,.7,.3,1), border-color .28s ease, background .28s ease;
}
.assure-row:hover{transform:translateX(6px);border-color:var(--line-strong);background:rgba(31,229,192,.07)}
.assure-row i{color:var(--primary);font-size:18px;margin-top:6px}
.assure-row h3{font-size:16.5px;margin-bottom:6px}
.assure-row p{color:var(--text-2);font-size:14px;line-height:1.75;margin:0}

/* ---------- 下载面板 ---------- */
.dl-panel{
  position:relative;overflow:hidden;
  padding:44px 40px;
  border-radius:28px;
  border:1px solid var(--glass-brd);
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-card);
}
.dl-panel::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,10,18,.95) 20%,rgba(7,10,18,.7) 100%)}
.dl-panel::after{
  content:"";position:absolute;left:-60px;top:-80px;width:420px;height:320px;
  background:radial-gradient(circle,rgba(31,229,192,.20),transparent 68%);
}
.dl-inner{position:relative;z-index:2}
.dl-panel h2{font-size:clamp(23px,2.6vw,34px);max-width:20em}
.dl-panel .sub{margin-top:14px;color:var(--text-2);font-size:15px;max-width:40em}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.dl-note{
  margin-top:24px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:8px 22px;
}
.dl-note b{color:var(--text-2);font-weight:600}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-list .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);
}
.faq-list .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-list .accordion-header{margin:0}
.faq-list .accordion-button{
  position:relative;
  background:transparent;color:var(--text-1);
  font-size:17px;font-weight:600;line-height:1.6;
  padding:22px 56px 22px 20px;
  border-radius:0;box-shadow:none;
  transition:color .25s ease,background .25s ease;
}
.faq-list .accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px var(--primary);opacity:0;transition:opacity .25s ease;
}
.faq-list .accordion-button:not(.collapsed){color:var(--primary);background:transparent;box-shadow:none}
.faq-list .accordion-button:not(.collapsed)::before{opacity:1}
.faq-list .accordion-button:hover{color:var(--primary)}
.faq-list .accordion-button::after{
  content:"+";
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;margin:0;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:50%;
  background-image:none;background-color:transparent;
  color:var(--primary);font-size:16px;line-height:1;font-weight:500;
  transition:transform .25s ease,background .25s ease;
}
.faq-list .accordion-button:not(.collapsed)::after{
  content:"−";transform:translateY(-50%) rotate(180deg);
  background:var(--primary-soft);
}
.faq-list .accordion-body{
  padding:0 56px 24px 20px;
  color:var(--text-2);font-size:15px;line-height:1.9;
}
.faq-list .accordion-body strong{color:var(--text-1);font-weight:600}

/* ---------- 收尾 CTA ---------- */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:26px;
  padding:32px 36px;border-radius:var(--radius-card);
  border:1px solid var(--glass-brd);
  background:
    radial-gradient(520px 200px at 10% 50%, rgba(31,229,192,.14), transparent 72%),
    var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.cta-strip h2{font-size:clamp(20px,2.1vw,27px)}
.cta-strip p{margin-top:10px;color:var(--text-2);font-size:14.5px}
.cta-strip .actions{display:flex;gap:12px;flex-wrap:wrap;flex:none}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;
  background:var(--bg-1);
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,rgba(31,229,192,.55),transparent) 1;
  padding:66px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer-brand .brand{font-size:17.5px}
.footer-brand p{margin-top:16px;color:var(--text-2);font-size:14px;line-height:1.85;max-width:26em}
.footer-col h4{font-size:14px;color:var(--primary);letter-spacing:.6px;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--text-2);font-size:14px;display:inline-block;transition:color .25s ease,transform .25s ease}
.footer-col a:hover{color:var(--text-1);transform:translateX(2px)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between;
  color:var(--text-3);font-size:13px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .section{padding:76px 0}
  .cards-grid{gap:18px}
  .flow-grid{gap:18px}
}
@media (max-width:991px){
  .site-header{padding:12px 16px 0;top:10px}
  .nav-shell{padding:0 16px;min-height:56px}
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:14px;border-radius:22px;
    background:rgba(12,18,32,.96);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border:1px solid var(--glass-brd);
    box-shadow:var(--shadow-card);
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-item{padding:11px 14px;border-radius:14px}
  .nav-item.active::after{left:14px;transform:none;bottom:8px;width:16px}
  .nav-cta{margin:8px 0 0;width:100%}
  .cards-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .specs-grid{grid-template-columns:1fr}
  .assure-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .page-hero{border-radius:22px;min-height:auto}
  .page-hero .wrap{padding-top:40px;padding-bottom:40px}
  .dl-panel{padding:34px 26px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .section.tight{padding-top:44px}
  .section-head{margin-bottom:28px}
  .cards-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .kbtn{width:100%}
  .dl-actions{flex-direction:column;align-items:stretch}
  .dl-actions .kbtn{width:100%}
  .cta-strip{flex-direction:column;align-items:stretch;padding:26px 22px}
  .cta-strip .actions{flex-direction:column}
  .cta-strip .actions .kbtn{width:100%}
  .spec-panel,.assure-main{padding:24px 20px}
  .spec-row{flex-direction:column;align-items:flex-start;gap:4px;padding:12px 0;min-height:auto}
  .spec-row .v{text-align:left}
  .faq-list .accordion-button{font-size:15.5px;padding:18px 48px 18px 16px}
  .faq-list .accordion-body{padding:0 30px 20px 16px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .brand-text{font-size:15px}
  .page-hero h1{font-size:26px}
  .anchor-pills a{font-size:12.5px;padding:7px 12px}
}

/* roulang page: category2 */
:root{
  --bg-0:#070A12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --primary:#1FE5C0;
  --primary-deep:#0FA98C;
  --primary-soft:rgba(31,229,192,.14);
  --accent:#FFB020;
  --accent-deep:#E08A00;
  --text-1:#E9EFF8;
  --text-2:#9AA9BF;
  --text-3:#5F6E85;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(31,229,192,.38);
  --glass:rgba(255,255,255,.055);
  --glass-brd:rgba(255,255,255,.12);
  --radius-pill:999px;
  --radius-card:20px;
  --radius-inner:14px;
  --shadow-card:0 18px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 8px 30px rgba(31,229,192,.32), 0 0 0 1px rgba(31,229,192,.55);
  --wrap:1180px;

  --bs-body-bg:#070A12;
  --bs-body-color:#E9EFF8;
  --bs-primary:#1FE5C0;
  --bs-link-color:#1FE5C0;
  --bs-link-hover-color:#0FA98C;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-border-radius:14px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  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:64px 64px;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:focus-visible,button:focus-visible,.kbtn:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{color:var(--text-1);font-weight:700;letter-spacing:.01em;margin:0;}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.18;}
h2{font-size:clamp(23px,2.6vw,36px);line-height:1.3;}
h3{font-size:clamp(18px,1.6vw,22px);line-height:1.42;}
p{margin:0 0 .9em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:var(--primary);color:#04211C;}
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}

/* ---------- 顶部胶囊导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  padding:16px 20px 0;
}
.nav-shell{
  max-width:var(--wrap);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:14px;
  min-height:64px;
  padding:8px 22px;
  border-radius:var(--radius-pill);
  background:rgba(12,18,32,.72);
  backdrop-filter:blur(16px) saturate(130%);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  border:1px solid var(--glass-brd);
  transition:background .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled .nav-shell{
  background:rgba(12,18,32,.92);
  box-shadow:var(--shadow-card);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-right:auto;
  flex:0 0 auto;
}
.brand-mark{
  width:26px;
  height:26px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 0 1px rgba(31,229,192,.5),0 6px 18px rgba(31,229,192,.3);
  position:relative;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:8px;
  border-radius:3px;
  background:var(--bg-0);
}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--text-1);
  white-space:nowrap;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-item{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--radius-pill);
  white-space:nowrap;
  transition:color .22s ease,background .22s ease;
}
.nav-item:hover{
  color:var(--text-1);
  background:rgba(255,255,255,.05);
}
.nav-item.active{
  color:var(--primary);
}
.nav-item.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  transform:translateX(-50%);
  width:22px;
  height:3px;
  border-radius:999px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(31,229,192,.6);
}
.nav-toggle{
  display:none;
  width:42px;
  height:38px;
  border-radius:12px;
  border:1px solid var(--glass-brd);
  background:rgba(255,255,255,.05);
  color:var(--text-1);
  font-size:17px;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:background .22s ease,border-color .22s ease;
}
.nav-toggle:hover{background:var(--primary-soft);border-color:var(--line-strong);}
.nav-cta{margin-left:8px;}

/* ---------- 按钮 ---------- */
.kbtn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:13px 26px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease,background .24s ease,color .24s ease,border-color .24s ease;
}
.kbtn i{transition:transform .24s ease;}
.kbtn-sm{padding:9px 20px;font-size:14px;}
.kbtn-solid{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04211C;
  box-shadow:var(--shadow-glow);
}
.kbtn-solid:hover{
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 12px 40px rgba(31,229,192,.4),0 0 0 1px rgba(31,229,192,.6);
}
.kbtn-solid:hover i{transform:translateX(3px);}
.kbtn-ghost{
  background:transparent;
  color:var(--primary);
  border-color:var(--line-strong);
}
.kbtn-ghost:hover{
  background:var(--primary-soft);
  transform:translateY(-2px);
}
.kbtn-accent{
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:#241500;
  box-shadow:0 8px 26px rgba(255,176,32,.28);
}
.kbtn-accent:hover{transform:translateY(-2px);filter:brightness(1.06);}
.kbtn:disabled{opacity:.4;cursor:not-allowed;transform:none;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  margin:26px auto 0;
  max-width:var(--wrap);
  border-radius:28px;
  overflow:hidden;
  padding:76px 56px 60px;
  background-color:var(--bg-2);
  background-image:linear-gradient(180deg,rgba(7,10,18,.74),rgba(7,10,18,.9)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border:1px solid var(--glass-brd);
  box-shadow:var(--shadow-card);
}
.hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:130px;
  background:linear-gradient(180deg,transparent,var(--bg-0));
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:760px;}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:20px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--text-3);}
.crumb .now{color:var(--text-3);}
.hero h1{margin-bottom:16px;}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{
  font-size:17px;
  color:var(--text-2);
  max-width:640px;
  margin-bottom:26px;
}
.pill-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:30px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  font-size:13.5px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.04);
  transition:color .22s ease,border-color .22s ease,background .22s ease,transform .22s ease;
}
.pill i{color:var(--primary);font-size:12px;}
.pill:hover{
  color:var(--text-1);
  border-color:var(--line-strong);
  background:var(--primary-soft);
  transform:translateY(-2px);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-note{
  margin-top:22px;
  font-size:13.5px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;position:relative;}
.section--alt{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:44px;
}
.sec-head .sec-title{max-width:660px;}
.sec-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:12px;
}
.sec-eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(31,229,192,.7);
}
.sec-head p{color:var(--text-2);font-size:15.5px;margin:14px 0 0;max-width:620px;}
.sec-link{
  font-size:14.5px;
  color:var(--primary);
  white-space:nowrap;
  padding-bottom:4px;
  border-bottom:1px dashed rgba(31,229,192,.45);
}
.sec-link:hover{border-bottom-style:solid;}

/* ---------- 能力矩阵（交替图文行） ---------- */
.feat-list{display:flex;flex-direction:column;}
.feat-row{
  display:grid;
  grid-template-columns:1.02fr 1fr;
  gap:46px;
  align-items:center;
  padding:38px 0;
  border-bottom:1px solid var(--line);
}
.feat-row:first-child{padding-top:0;}
.feat-row:last-child{border-bottom:0;padding-bottom:0;}
.feat-row.rev .feat-media{order:2;}
.feat-row.rev .feat-body{order:1;}
.feat-media{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--glass-brd);
  box-shadow:var(--shadow-card);
  background:var(--bg-2);
}
.feat-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .5s cubic-bezier(.2,.7,.3,1);
}
.feat-row:hover .feat-media img{transform:scale(1.04);}
.feat-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,10,18,.05),rgba(7,10,18,.55));
  pointer-events:none;
}
.feat-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);
  color:var(--primary);
  background:var(--primary-soft);
  margin-bottom:16px;
}
.feat-body h3{margin-bottom:12px;}
.feat-body > p{color:var(--text-2);font-size:15.5px;}
.feat-points{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.feat-points li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  color:var(--text-2);
}
.feat-points li::before{
  content:"";
  position:absolute;
  left:2px;
  top:11px;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(31,229,192,.6);
}
.feat-points li strong{color:var(--text-1);font-weight:600;}

/* ---------- 横向滚动场景带 ---------- */
.scroll-band{
  display:flex;
  gap:22px;
  overflow-x:auto;
  padding:6px 4px 18px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.scroll-band::-webkit-scrollbar{height:6px;}
.scroll-band::-webkit-scrollbar-track{background:var(--line);border-radius:999px;}
.scroll-band::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:999px;}
.band-card{
  flex:0 0 350px;
  scroll-snap-align:start;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-brd);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  overflow:hidden;
  transition:transform .28s cubic-bezier(.2,.7,.3,1),border-color .28s ease,box-shadow .28s ease;
}
.band-card:hover{
  transform:translateY(-6px);
  border-color:var(--line-strong);
  box-shadow:0 22px 52px rgba(0,0,0,.5),0 0 0 1px rgba(31,229,192,.28);
}
.band-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-bottom:1px solid var(--line);
}
.band-body{padding:20px 22px 24px;}
.band-body h3{font-size:17px;margin-bottom:10px;}
.band-body p{font-size:14.5px;color:var(--text-2);margin:0;}
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  background:rgba(255,176,32,.14);
  color:var(--accent);
  border:1px solid rgba(255,176,32,.32);
  margin-bottom:12px;
}

/* ---------- 数据看板 ---------- */
.board{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:22px;
}
.board-panel{
  border-radius:var(--radius-card);
  border:1px solid var(--glass-brd);
  background:linear-gradient(180deg,rgba(18,26,43,.92),rgba(12,18,32,.92));
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.stat-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1px;
  background:var(--line);
}
.stat-cell{
  background:var(--bg-1);
  padding:28px 26px;
}
.stat-num{
  font-family:"Barlow","Inter",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:30px;
  font-weight:700;
  color:var(--primary);
  line-height:1.15;
  letter-spacing:.01em;
}
.stat-label{font-size:14.5px;color:var(--text-1);margin-top:6px;}
.stat-desc{font-size:13px;color:var(--text-3);margin-top:6px;line-height:1.7;}
.dim-list{padding:10px 26px 18px;}
.dim-item{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  transition:transform .24s ease;
}
.dim-item:last-child{border-bottom:0;}
.dim-item:hover{transform:translateX(4px);}
.dim-icon{
  flex:0 0 auto;
  width:36px;
  height:36px;
  border-radius:11px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--primary-soft);
  color:var(--primary);
  border:1px solid var(--line-strong);
  font-size:14px;
}
.dim-item h3{font-size:15.5px;margin-bottom:4px;}
.dim-item p{font-size:13.5px;color:var(--text-2);margin:0;line-height:1.7;}

/* ---------- 流程时间线 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
  position:relative;
}
.step{
  position:relative;
  padding:26px 22px 24px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-brd);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:transform .28s cubic-bezier(.2,.7,.3,1),border-color .28s ease,box-shadow .28s ease;
}
.step:hover{
  transform:translateY(-6px);
  border-color:var(--line-strong);
  box-shadow:0 20px 46px rgba(0,0,0,.45),0 0 0 1px rgba(31,229,192,.25);
}
.step-num{
  font-family:"Barlow","Inter",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--accent);
  margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:10px;}
.step p{font-size:14px;color:var(--text-2);margin:0;}

/* ---------- FAQ ---------- */
.faq{
  max-width:900px;
  margin:0 auto;
}
.faq .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
}
.faq .accordion-item:first-child{border-top:1px solid var(--line);}
.faq .accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:16.5px;
  font-weight:600;
  padding:24px 48px 24px 20px;
  box-shadow:none;
  border-radius:0;
  transition:color .24s ease,background .24s ease;
}
.faq .accordion-button::after{
  display:none;
}
.faq .accordion-button::before{
  content:"+";
  position:absolute;
  right:18px;
  top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--text-3);
  transition:transform .25s ease,color .25s ease;
}
.faq .accordion-button:not(.collapsed){
  color:var(--primary);
  background:transparent;
  box-shadow:inset 3px 0 0 var(--primary),0 0 26px rgba(31,229,192,.06);
}
.faq .accordion-button:not(.collapsed)::before{
  content:"−";
  color:var(--primary);
  transform:translateY(-50%) rotate(180deg);
}
.faq .accordion-button:hover{color:var(--primary);}
.faq .accordion-button:focus{
  box-shadow:inset 0 0 0 2px rgba(31,229,192,.5);
  border-radius:6px;
}
.faq .accordion-body{
  padding:0 56px 26px 20px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.9;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  padding:36px 40px;
  border-radius:26px;
  border:1px solid var(--glass-brd);
  background:radial-gradient(120% 150% at 10% 0%,rgba(31,229,192,.16),transparent 62%),var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(120deg,rgba(255,255,255,.03) 0 12%,transparent 12% 100%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2vw,27px);margin-bottom:8px;position:relative;}
.cta-band p{font-size:14.5px;color:var(--text-2);margin:0;position:relative;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;}
.back-row{
  margin-top:34px;
  display:flex;
  justify-content:center;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:0;
  background:var(--bg-1);
  padding:66px 0 28px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,229,192,.65),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:34px;
  padding-bottom:42px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{
  font-size:14px;
  color:var(--text-2);
  margin-top:16px;
  max-width:320px;
  line-height:1.8;
}
.footer-col h4{
  font-size:14px;
  color:var(--primary);
  letter-spacing:.04em;
  margin-bottom:16px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color .22s ease,transform .22s ease;
}
.footer-col a:hover{
  color:var(--text-1);
  transform:translateX(3px);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding-top:24px;
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero{padding:64px 42px 52px;}
  .band-card{flex:0 0 320px;}
}
@media (max-width:991.98px){
  .site-header{padding:12px 16px 0;}
  .nav-shell{flex-wrap:wrap;padding:8px 16px;border-radius:26px;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:12px 0 8px;
    margin-top:6px;
    border-top:1px solid var(--line);
  }
  .nav-menu.is-open{display:flex;}
  .nav-item{padding:12px 14px;border-radius:14px;}
  .nav-item.active::after{display:none;}
  .nav-item.active{background:var(--primary-soft);}
  .nav-cta{margin:10px 0 4px;width:100%;}
  .hero{padding:52px 28px 46px;border-radius:24px;}
  .section{padding:64px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:34px;}
  .feat-row{grid-template-columns:1fr;gap:24px;padding:30px 0;}
  .feat-row.rev .feat-media{order:1;}
  .feat-row.rev .feat-body{order:2;}
  .board{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .faq .accordion-body{padding-right:24px;}
}
@media (max-width:767.98px){
  .section{padding:44px 0;}
  .hero-lead{font-size:15.5px;}
  .hero-actions{width:100%;}
  .hero-actions .kbtn{flex:1 1 100%;}
  .stat-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:stretch;padding:28px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .kbtn{flex:1 1 100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:519.98px){
  .band-card{flex:0 0 280px;}
  .brand-text{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .feat-media img{aspect-ratio:4/3;}
}