/* roulang page: index */
:root{
  --bg-0:#05080F;
  --bg-1:#0A111E;
  --surface:rgba(255,255,255,.045);
  --surface-2:#0E1626;
  --line:rgba(255,255,255,.09);
  --primary:#21D4B4;
  --primary-2:#3BA9FF;
  --accent:#FF6A2B;
  --text-1:#EAF1FB;
  --text-2:#A7B5C9;
  --text-3:#6F7F96;
  --success:#35D07F;
  --danger:#FF6B6B;
  --radius-card:18px;
  --radius-media:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 12px 40px rgba(33,212,180,.18);
  --dur:220ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --container:1200px;
}
*,*::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:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;background-color:transparent;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:16px;}
h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dd,dt,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3,h4{font-weight:800;letter-spacing:.015em;line-height:1.32;color:var(--text-1);}
strong{font-weight:700;color:var(--text-1);}
::selection{background:rgba(33,212,180,.3);color:#fff;}
.skip-link{position:absolute;left:-9999px;top:0;z-index:999;background:var(--surface-2);color:var(--text-1);padding:12px 20px;border-radius:0 0 var(--radius-sm) 0;}
.skip-link:focus{left:0;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ================= 顶部导航 ================= */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(5,8,15,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.55),rgba(33,212,180,.12) 45%,transparent 90%);
  pointer-events:none;
}
.site-header.is-scrolled{background:rgba(5,8,15,.93);box-shadow:0 10px 30px rgba(0,0,0,.5);}
.header-inner{
  height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
@media (min-width:641px){.header-inner{height:64px;}}
@media (min-width:1024px){.header-inner{height:72px;}}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(33,212,180,.9),rgba(59,169,255,.85));
  box-shadow:0 6px 20px rgba(33,212,180,.28);
}
.brand-mark svg{width:20px;height:20px;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.02em;color:var(--text-1);}
.brand-sub{font-size:10px;letter-spacing:.22em;color:var(--text-3);text-transform:uppercase;}
.main-nav{display:none;align-items:center;gap:4px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--text-2);transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:16px;height:2px;border-radius:2px;
  transform:translateX(-50%) scaleX(0);transform-origin:center;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  box-shadow:0 0 10px rgba(33,212,180,.7);
  transition:transform 250ms var(--ease);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{color:var(--text-1);background:rgba(33,212,180,.12);}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.header-cta{display:none;}
@media (min-width:1024px){.header-cta{display:inline-flex;}}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-toggle span{display:block;width:19px;height:2px;border-radius:2px;background:var(--text-2);transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);}
.nav-toggle:hover{border-color:rgba(33,212,180,.5);background:rgba(33,212,180,.08);}
.nav-toggle:hover span{background:var(--primary);}
@media (min-width:1024px){.nav-toggle{display:none;}}

/* 移动端抽屉 */
.nav-drawer{
  position:fixed;inset:0;z-index:200;pointer-events:none;
}
.drawer-mask{
  position:absolute;inset:0;background:rgba(3,5,10,.72);opacity:0;transition:opacity var(--dur) var(--ease);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(88vw,360px);
  background:linear-gradient(180deg,rgba(14,22,38,.96),rgba(5,8,15,.98));
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid rgba(255,255,255,.09);
  padding:22px 22px 28px;display:flex;flex-direction:column;gap:22px;
  transform:translateX(100%);transition:transform 300ms var(--ease);
}
.nav-drawer.is-open{pointer-events:auto;}
.nav-drawer.is-open .drawer-mask{opacity:1;}
.nav-drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-title{font-size:16px;font-weight:800;color:var(--text-1);}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:22px;line-height:1;color:var(--text-2);transition:all var(--dur) var(--ease);
}
.drawer-close:hover{color:var(--primary);border-color:rgba(33,212,180,.5);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  padding:12px 4px;font-size:20px;font-weight:700;color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);padding-left:10px;}
.drawer-cta{margin-top:auto;}
@media (min-width:1024px){.nav-drawer{display:none;}}

/* ================= 按钮 ================= */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap;overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn svg{width:17px;height:17px;flex:0 0 auto;}
.btn-primary{
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  color:#04121A;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12),0 10px 30px rgba(33,212,180,.35);
}
.btn-primary::after{
  content:"";position:absolute;inset:0;transform:translateX(-120%);
  background:linear-gradient(100deg,transparent 32%,rgba(255,255,255,.42) 50%,transparent 68%);
  transition:transform .6s var(--ease);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.2),0 16px 42px rgba(33,212,180,.48);}
.btn-primary:hover::after{transform:translateX(120%);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-accent{
  background:linear-gradient(100deg,#FF8B52,var(--accent));
  color:#1B0A02;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16),0 10px 30px rgba(255,106,43,.34);
}
.btn-accent::after{
  content:"";position:absolute;inset:0;transform:translateX(-120%);
  background:linear-gradient(100deg,transparent 32%,rgba(255,255,255,.45) 50%,transparent 68%);
  transition:transform .6s var(--ease);
}
.btn-accent:hover{transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.22),0 16px 42px rgba(255,106,43,.46);}
.btn-accent:hover::after{transform:translateX(120%);}
.btn-accent:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(33,212,180,.08);color:var(--text-1);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,212,180,.28);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--primary);
  transition:color var(--dur) var(--ease);
}
.btn-link svg{width:15px;height:15px;transition:transform var(--dur) var(--ease);}
.btn-link:hover svg{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ================= 通用板块 ================= */
.section{position:relative;padding:56px 0;}
@media (min-width:641px){.section{padding:72px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--bg-1);}
.section-hairline{border-top:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.12em;color:var(--primary);background:rgba(33,212,180,.1);border:1px solid rgba(33,212,180,.24);
  margin-bottom:14px;text-transform:uppercase;font-weight:700;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(33,212,180,.9);}
h2.section-title{font-size:clamp(22px,3vw,34px);line-height:1.3;}
h3{font-size:20px;line-height:1.4;}
.section-sub{margin-top:12px;color:var(--text-2);font-size:16px;}
.lead{color:var(--text-2);font-size:16.5px;}
.grid-gap-y{margin-bottom:-24px;}
.grid-gap-y > .cell{margin-bottom:24px;}
.text-muted{color:var(--text-3);font-size:13px;}
.hairline{height:1px;background:var(--line);border:0;margin:0;}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:12px;line-height:1;font-weight:700;letter-spacing:.02em;border:1px solid transparent;
}
.badge-cyan{background:rgba(33,212,180,.12);color:var(--primary);border-color:rgba(33,212,180,.26);}
.badge-blue{background:rgba(59,169,255,.12);color:var(--primary-2);border-color:rgba(59,169,255,.26);}
.badge-orange{background:rgba(255,106,43,.12);color:var(--accent);border-color:rgba(255,106,43,.3);}
.badge-plain{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line);}

/* ================= Hero ================= */
.hero{
  position:relative;overflow:hidden;
  padding:104px 0 60px;
  background-image:linear-gradient(180deg,rgba(5,8,15,.84),rgba(5,8,15,.96) 72%,var(--bg-0)),
                   url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
@media (min-width:641px){.hero{padding:120px 0 76px;}}
@media (min-width:1024px){.hero{padding:150px 0 96px;}}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-80px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(33,212,180,.2),transparent 68%);pointer-events:none;
}
.hero-copy{position:relative;z-index:2;}
.hero h1{font-size:clamp(28px,5vw,50px);line-height:1.22;letter-spacing:.015em;}
.hero h1 .accent-text{color:var(--primary);}
.hero-sub{margin-top:16px;font-size:clamp(16px,1.6vw,19px);color:var(--text-1);font-weight:600;}
.hero-desc{margin-top:16px;color:var(--text-2);font-size:16px;max-width:560px;}
.hero-actions{display:flex;flex-direction:column;gap:12px;margin-top:28px;}
@media (min-width:520px){.hero-actions{flex-direction:row;flex-wrap:wrap;}}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:26px;
  font-size:13px;color:var(--text-3);font-family:var(--font-num);
}
.hero-meta span{padding:0 14px;line-height:1.6;position:relative;}
.hero-meta span:first-child{padding-left:0;}
.hero-meta span + span::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:12px;background:var(--line);
}
.hero-visual{position:relative;z-index:2;margin-top:40px;}
@media (min-width:1024px){.hero-visual{margin-top:0;}}
.device-frame{
  position:relative;border-radius:24px;overflow:hidden;background:var(--surface-2);
  border:1px solid rgba(33,212,180,.24);
  box-shadow:0 24px 60px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,255,255,.12);
}
.device-frame img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.device-frame .device-bar{
  display:flex;align-items:center;gap:6px;padding:10px 14px;background:rgba(5,8,15,.85);border-bottom:1px solid var(--line);
}
.device-bar i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.16);display:block;}
.device-bar i:first-child{background:rgba(33,212,180,.75);}
.device-bar span{margin-left:8px;font-size:11px;color:var(--text-3);font-family:var(--font-num);letter-spacing:.06em;}
.float-card{
  position:absolute;right:-8px;bottom:-22px;width:min(240px,72vw);padding:16px 18px;border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(255,255,255,.09),rgba(255,255,255,.035));
  -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.1);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 18px 40px rgba(0,0,0,.5);
}
@media (min-width:1024px){.float-card{right:-24px;}}
.float-card .fc-label{font-size:12px;color:var(--text-3);}
.float-card .fc-value{margin-top:4px;font-size:20px;font-weight:800;color:var(--primary);font-family:var(--font-num);}
.float-card .fc-note{margin-top:6px;font-size:12.5px;color:var(--text-2);line-height:1.6;}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .float-card,.review-card,.download-shell{background:var(--surface-2);}
}

/* ================= 价值区 ================= */
.value-row{display:flex;flex-direction:column;gap:26px;align-items:center;}
@media (min-width:1024px){.value-row{flex-direction:row;gap:56px;}}
.value-row + .value-row{margin-top:48px;}
@media (min-width:1024px){.value-row + .value-row{margin-top:64px;}}
.value-row .value-media{width:100%;}
.value-row .value-copy{width:100%;}
@media (min-width:1024px){
  .value-row .value-media,.value-row .value-copy{flex:1 1 0;}
  .value-row.is-reverse{flex-direction:row-reverse;}
}
.value-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-media);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.value-copy h3{font-size:clamp(20px,2.2vw,24px);}
.value-copy p{margin-top:14px;color:var(--text-2);}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text-2);font-size:15.5px;}
.check-list svg{width:18px;height:18px;flex:0 0 auto;margin-top:5px;color:var(--primary);}
.point-strip{
  margin-top:52px;display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
@media (min-width:641px){.point-strip{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.point-strip{grid-template-columns:repeat(4,1fr);margin-top:64px;}}
.point-item{background:var(--bg-0);padding:26px 22px;transition:background var(--dur) var(--ease);}
.point-item:hover{background:#0B1424;}
.point-num{font-family:var(--font-num);font-size:30px;font-weight:800;color:transparent;-webkit-text-stroke:1px rgba(33,212,180,.6);line-height:1;}
.point-item h4{margin-top:14px;font-size:17px;}
.point-item p{margin-top:8px;font-size:14.5px;color:var(--text-3);line-height:1.75;}

/* ================= 截图轮播 ================= */
.shots{position:relative;overflow:hidden;}
.shots-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 2px 22px;margin:0 -2px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.shots-track::-webkit-scrollbar{display:none;}
.shot{
  flex:0 0 78%;scroll-snap-align:start;border-radius:var(--radius-media);overflow:hidden;
  background:var(--surface-2);border:1px solid rgba(33,212,180,.18);box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
@media (min-width:641px){.shot{flex:0 0 54%;}}
@media (min-width:1024px){.shot{flex:0 0 44%;}}
.shot:hover{transform:translateY(-4px);border-color:rgba(33,212,180,.45);}
.shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.shot figcaption{padding:14px 18px;font-size:14px;color:var(--text-2);border-top:1px solid var(--line);}
.shots-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:8px;}
.dots{display:flex;gap:8px;}
.dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.18);transition:all var(--dur) var(--ease);}
.dot.is-active{width:24px;border-radius:var(--radius-pill);background:linear-gradient(90deg,var(--primary),var(--primary-2));}
.arrows{display:flex;gap:10px;}
.arrow{
  width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;
  color:var(--text-2);transition:all var(--dur) var(--ease);
}
.arrow:hover{border-color:var(--primary);color:var(--primary);background:rgba(33,212,180,.08);}
.arrow svg{width:17px;height:17px;}

/* ================= 规格卡 ================= */
.spec-card{
  position:relative;height:100%;background:var(--surface-2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px 22px 24px 28px;box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.spec-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));box-shadow:0 0 14px rgba(33,212,180,.55);
}
.spec-card:hover{transform:translateY(-4px);border-color:rgba(33,212,180,.35);box-shadow:var(--shadow-hover);}
.spec-icon{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(33,212,180,.1);border:1px solid rgba(33,212,180,.24);color:var(--primary);margin-bottom:16px;
}
.spec-icon svg{width:20px;height:20px;}
.spec-label{font-size:13px;color:var(--text-3);letter-spacing:.06em;}
.spec-value{margin-top:6px;font-size:17px;font-weight:700;color:var(--text-1);}
.spec-note{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75;}
.def-list{
  margin-top:28px;display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
@media (min-width:641px){.def-list{grid-template-columns:repeat(2,1fr);}}
.def-list > div{background:var(--bg-1);padding:18px 22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.def-list dt{font-size:14px;color:var(--text-3);}
.def-list dd{font-size:14.5px;color:var(--text-1);font-weight:600;text-align:right;}

/* ================= 评价墙 ================= */
.review-col{display:flex;flex-direction:column;gap:20px;height:100%;}
@media (min-width:641px){.review-col.is-offset{padding-top:36px;}}
.review-card{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.09);border-radius:var(--radius-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);padding:22px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.review-card:hover{transform:translateY(-4px);box-shadow:inset 0 1px 0 rgba(255,255,255,.18),var(--shadow-hover);}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(59,169,255,.35),rgba(33,212,180,.35));
  border:1px solid rgba(255,255,255,.16);font-size:15px;font-weight:800;color:var(--text-1);
}
.review-name{font-size:15px;font-weight:700;color:var(--text-1);}
.review-tag{font-size:12.5px;color:var(--text-3);}
.stars{margin-left:auto;color:var(--accent);font-size:13px;letter-spacing:2px;}
.review-text{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ================= 下载区 ================= */
.download-shell{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.1);border-radius:22px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);
  padding:28px 22px;
}
@media (min-width:1024px){.download-shell{padding:34px 36px;}}
.platform-grid{display:grid;grid-template-columns:1fr;gap:14px;}
@media (min-width:520px){.platform-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.platform-grid{grid-template-columns:repeat(3,1fr);}}
.platform-btn{
  display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:16px;
  background:rgba(5,8,15,.6);border:1px solid rgba(255,255,255,.12);
  transition:all var(--dur) var(--ease);
}
.platform-btn:hover{border-color:rgba(33,212,180,.55);background:rgba(33,212,180,.08);transform:translateY(-3px);}
.platform-btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,212,180,.28);}
.platform-btn .pb-icon{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:rgba(33,212,180,.12);border:1px solid rgba(33,212,180,.26);color:var(--primary);
}
.platform-btn .pb-icon svg{width:22px;height:22px;}
.platform-btn .pb-name{font-size:16px;font-weight:700;color:var(--text-1);}
.platform-btn .pb-ver{font-size:12.5px;color:var(--text-3);font-family:var(--font-num);}
@media (min-width:520px) and (max-width:1023px){
  .platform-btn.pb-wide{grid-column:span 2;}
}
.download-foot{
  margin-top:22px;display:flex;flex-direction:column;gap:18px;align-items:flex-start;
  padding-top:22px;border-top:1px solid var(--line);
}
@media (min-width:1024px){.download-foot{flex-direction:row;align-items:center;justify-content:space-between;}}
.qr-box{
  width:120px;height:120px;border-radius:16px;flex:0 0 auto;
  border:1px dashed rgba(33,212,180,.45);background:rgba(5,8,15,.7);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--text-3);line-height:1.6;padding:10px;
}
.download-note{font-size:13.5px;color:var(--text-3);max-width:520px;line-height:1.8;}
.download-note strong{color:var(--primary);font-weight:700;}

/* ================= 内容卡片（最新信息） ================= */
.post-card{
  display:flex;flex-direction:column;height:100%;background:var(--surface-2);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(33,212,180,.4);box-shadow:var(--shadow-hover);}
.post-thumb{display:block;overflow:hidden;background:linear-gradient(140deg,#122036,#0A111E);}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 420ms var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.post-title{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--dur) var(--ease);}
.post-card:hover .post-title{color:var(--primary);}
.post-excerpt{font-size:14.5px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;align-items:center;gap:12px;padding-top:6px;font-size:13px;color:var(--text-3);}
.post-meta time{font-family:var(--font-num);}
.post-arrow{margin-left:auto;color:var(--primary);transition:transform var(--dur) var(--ease);}
.post-card:hover .post-arrow{transform:translateX(3px);}
@media (min-width:1024px){
  .post-card.is-feature{flex-direction:row;}
  .post-card.is-feature .post-thumb{flex:0 0 46%;}
  .post-card.is-feature .post-thumb img{height:100%;aspect-ratio:auto;}
  .post-card.is-feature .post-body{padding:28px 30px;}
  .post-card.is-feature .post-title{font-size:22px;-webkit-line-clamp:2;}
  .post-card.is-feature .post-excerpt{-webkit-line-clamp:3;font-size:15px;}
}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:52px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:rgba(255,255,255,.02);text-align:center;
}
.empty-state svg{width:46px;height:46px;color:var(--text-3);opacity:.6;}
.empty-state p{color:var(--text-2);font-size:15px;}

/* ================= FAQ ================= */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  position:relative;background:var(--surface-2);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));opacity:0;transition:opacity var(--dur) var(--ease);
}
.faq-item[open]{border-color:rgba(33,212,180,.35);background:#0D1727;}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;padding:20px 22px;
  font-size:16.5px;font-weight:700;color:var(--text-1);transition:color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item summary:focus-visible{outline:none;box-shadow:inset 0 0 0 3px rgba(33,212,180,.24);}
.faq-num{font-family:var(--font-num);font-size:14px;font-weight:800;color:var(--primary-2);flex:0 0 auto;letter-spacing:.06em;}
.faq-title{flex:1 1 auto;}
.faq-toggle{
  width:28px;height:28px;border-radius:50%;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);font-size:16px;line-height:1;transition:all var(--dur) var(--ease);
}
.faq-item[open] .faq-toggle{border-color:rgba(33,212,180,.5);color:var(--primary);background:rgba(33,212,180,.1);}
.faq-body{padding:0 22px 22px 60px;color:var(--text-2);font-size:15.5px;line-height:1.85;animation:faqIn 200ms var(--ease);}
@media (max-width:639px){.faq-body{padding-left:22px;}}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* ================= CTA 条带 ================= */
.cta-band{
  display:flex;flex-direction:column;gap:22px;padding:30px 24px;border-radius:22px;
  background:linear-gradient(100deg,rgba(33,212,180,.14),rgba(59,169,255,.1) 60%,rgba(255,255,255,.03));
  border:1px solid rgba(33,212,180,.28);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12),0 18px 46px rgba(0,0,0,.45);
}
@media (min-width:1024px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:36px 40px;gap:36px;}
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);}
.cta-band p{margin-top:10px;color:var(--text-2);font-size:15.5px;max-width:620px;}
.cta-band-actions{display:flex;flex-direction:column;gap:12px;}
@media (min-width:520px){.cta-band-actions{flex-direction:row;flex-wrap:wrap;}}

/* ================= 页脚 ================= */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);position:relative;margin-top:0;}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(33,212,180,.55),transparent);
}
.footer-main{padding:52px 0 34px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14.5px;color:var(--text-2);transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);display:inline-block;}
.footer-links a:hover{color:var(--primary);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;flex-direction:column;gap:12px;
  font-size:13px;color:var(--text-3);
}
@media (min-width:1024px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:8px 18px;}
.footer-bottom-links a{color:var(--text-3);transition:color var(--dur) var(--ease);}
.footer-bottom-links a:hover{color:var(--primary);}
.social-row{display:flex;gap:10px;margin-top:16px;}
.social-row span{
  width:36px;height:36px;border-radius:11px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--text-3);font-size:12px;transition:all var(--dur) var(--ease);
}
.social-row span:hover{color:var(--primary);border-color:rgba(33,212,180,.5);background:rgba(33,212,180,.08);}

/* ================= 入场动画 ================= */
html.js .reveal{opacity:0;transform:translateY(12px);transition:opacity 600ms var(--ease),transform 600ms var(--ease);}
html.js .reveal.is-visible{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --bg-0:#05080F;
  --bg-1:#0A111E;
  --surface:rgba(255,255,255,.045);
  --surface-2:#0E1626;
  --line:rgba(255,255,255,.09);
  --primary:#21D4B4;
  --primary-2:#3BA9FF;
  --accent:#FF6A2B;
  --text-1:#EAF1FB;
  --text-2:#A7B5C9;
  --text-3:#6F7F96;
  --success:#35D07F;
  --danger:#FF6B6B;
  --r-card:18px;
  --r-img:20px;
  --r-input:12px;
  --r-pill:999px;
  --shadow-1:0 8px 30px rgba(0,0,0,.45);
  --shadow-2:0 12px 40px rgba(33,212,180,.18);
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --t-slow:520ms cubic-bezier(.2,.7,.3,1);
  --section-y:56px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (min-width:640px){:root{--section-y:72px}}
@media (min-width:1024px){:root{--section-y:96px}}

*,*::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:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block;border-style:none}
a{color:inherit;text-decoration:none;background-color:transparent}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(33,212,180,.32);color:#fff}

.bg-grid{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:68px 68px;
  -webkit-mask-image:radial-gradient(1000px 640px at 50% -6%,#000 0%,transparent 78%);
  mask-image:radial-gradient(1000px 640px at 50% -6%,#000 0%,transparent 78%);
  opacity:.55;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- 按钮系统 ---------- */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
}
.btn svg{width:16px;height:16px;flex:none}
.btn-primary{
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  color:#04121A;
  font-weight:700;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12),0 10px 30px rgba(33,212,180,.35);
}
.btn-primary::after{
  content:"";
  position:absolute;
  top:-70%;
  left:-130%;
  width:55%;
  height:240%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent);
  transform:rotate(18deg);
  transition:left .6s ease;
  pointer-events:none;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.2),0 16px 42px rgba(33,212,180,.46)}
.btn-primary:hover::after{left:135%}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,212,180,.28)}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text-1);
  font-weight:600;
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(33,212,180,.08);color:var(--text-1)}
.btn-ghost:active{filter:brightness(.92)}
.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,212,180,.24)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none}

/* ---------- 标签与徽章 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  line-height:1;
  border:1px solid transparent;
  white-space:nowrap;
}
.tag-primary{color:var(--primary);background:rgba(33,212,180,.12);border-color:rgba(33,212,180,.35)}
.tag-blue{color:var(--primary-2);background:rgba(59,169,255,.12);border-color:rgba(59,169,255,.32)}
.tag-accent{color:var(--accent);background:rgba(255,106,43,.12);border-color:rgba(255,106,43,.32)}

/* ---------- 玻璃卡 ---------- */
.glass{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-1);
  border-radius:var(--r-card);
}
@supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
  .glass{background:var(--surface-2)}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,8,15,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  transition:background var(--t),box-shadow var(--t);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.55),rgba(255,255,255,.07) 55%,transparent);
}
.site-header.is-scrolled{background:rgba(5,8,15,.94);box-shadow:0 10px 30px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;gap:14px;height:60px}
@media (min-width:640px){.header-inner{height:64px}}
@media (min-width:1024px){.header-inner{height:72px;gap:20px}}

.brand{display:inline-flex;align-items:center;gap:10px;margin-right:auto;flex:none}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 6px 18px rgba(33,212,180,.35);
  flex:none;
}
.brand-mark svg{width:19px;height:19px}
.brand-text{display:flex;flex-direction:column;line-height:1.08}
.brand-name{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--text-1)}
.brand-sub{font-size:10px;letter-spacing:.24em;color:var(--text-3);margin-top:2px}
@media (min-width:1024px){
  .brand-name{font-size:17px}
  .brand-sub{font-size:11px}
}

.main-nav{display:none;align-items:center;gap:2px}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--text-2);
  transition:color var(--t),background var(--t);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:1px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(33,212,180,.85);
  transform:translateX(-50%);
  transition:width var(--t);
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{width:16px}
.nav-link.is-active{color:var(--text-1);background:rgba(33,212,180,.12)}
.nav-link.is-active::after{width:16px}
.nav-link:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,212,180,.24)}

.nav-cta{flex:none;height:40px;padding:0 18px;font-size:14px}
@media (min-width:1024px){.nav-cta{height:42px;padding:0 22px;font-size:15px}}

.nav-toggle{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  padding:0 11px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.03);
  flex:none;
  transition:border-color var(--t),background var(--t);
}
.nav-toggle span{display:block;height:2px;width:100%;border-radius:2px;background:var(--text-2);transition:transform var(--t),background var(--t),opacity var(--t)}
.nav-toggle:hover{border-color:rgba(33,212,180,.5)}
.nav-toggle:hover span{background:var(--primary)}
.nav-toggle:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,212,180,.24)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (min-width:1024px){.nav-toggle{display:none}}

@media (max-width:1023px){
  .main-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(86vw,360px);
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:22px;
    padding:96px 26px 36px;
    background:rgba(6,10,18,.97);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    transform:translateX(101%);
    transition:transform 340ms cubic-bezier(.2,.7,.3,1);
    z-index:80;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav .nav-link{
    height:auto;
    padding:0;
    font-size:20px;
    font-weight:700;
    color:var(--text-1);
  }
  .main-nav .nav-link::after{display:none}
  .main-nav .nav-link.is-active{background:none;color:var(--primary)}
}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:32px 0 34px;
  background:
    radial-gradient(880px 320px at 10% -30%,rgba(33,212,180,.14),transparent 72%),
    radial-gradient(700px 260px at 92% -10%,rgba(59,169,255,.12),transparent 70%),
    var(--bg-1);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;
  top:-120px;right:-80px;
  width:420px;height:420px;
  background:conic-gradient(from 210deg,rgba(33,212,180,.18),transparent 55%);
  border-radius:50%;
  filter:blur(40px);
  opacity:.6;
  pointer-events:none;
}
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.breadcrumbs a{color:var(--text-2);transition:color var(--t)}
.breadcrumbs a:hover{color:var(--primary)}
.breadcrumbs .sep{color:var(--text-3);opacity:.6}
.breadcrumbs .current{
  color:var(--text-3);
  max-width:62ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-title{
  font-size:clamp(26px,4.4vw,44px);
  line-height:1.34;
  font-weight:800;
  letter-spacing:.015em;
  color:var(--text-1);
  max-width:960px;
  margin-bottom:20px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-item svg{width:14px;height:14px;opacity:.7}
.meta-divider{width:1px;height:12px;background:rgba(255,255,255,.18);display:inline-block}

/* ---------- 正文区 ---------- */
.article-section{padding:var(--section-y) 0 0;position:relative;z-index:1}
.article-shell{max-width:760px;margin:0 auto}
.article-body{
  font-size:16.5px;
  line-height:1.9;
  color:#C6D3E4;
  word-wrap:break-word;
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.4vw,26px);
  font-weight:700;
  line-height:1.5;
  letter-spacing:.015em;
  color:var(--text-1);
  margin:2.2em 0 .8em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.3em;
  bottom:.3em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));
  box-shadow:0 0 12px rgba(33,212,180,.6);
}
.article-body h3{
  font-size:19px;
  font-weight:700;
  color:var(--text-1);
  margin:1.8em 0 .6em;
  line-height:1.55;
}
.article-body h4{
  font-size:17px;
  font-weight:700;
  color:var(--text-1);
  margin:1.6em 0 .5em;
}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em}
.article-body ul{list-style:none;padding-left:.2em}
.article-body ul>li{position:relative;padding-left:20px;margin:.5em 0}
.article-body ul>li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.78em;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 8px rgba(33,212,180,.7);
}
.article-body ol{list-style:decimal}
.article-body ol>li{margin:.5em 0}
.article-body ol>li::marker{color:var(--primary);font-weight:700}
.article-body a{
  color:var(--primary);
  border-bottom:1px solid rgba(33,212,180,.38);
  transition:border-color var(--t),color var(--t);
}
.article-body a:hover{border-bottom-color:var(--primary);color:#5BEFD2}
.article-body blockquote{
  margin:1.6em 0;
  padding:14px 18px;
  border-left:3px solid var(--primary);
  background:rgba(33,212,180,.06);
  border-radius:0 12px 12px 0;
  color:var(--text-1);
  font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.6em auto;width:100%}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.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 pre{
  background:#060B14;
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px 18px;
  overflow-x:auto;
  margin:1.6em 0;
}
.article-body pre code{background:none;border:0;padding:0;color:var(--text-2)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-body table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  font-size:15px;
  margin:1.6em 0;
  -webkit-overflow-scrolling:touch;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  color:var(--text-2);
  white-space:nowrap;
}
.article-body th{background:rgba(33,212,180,.08);color:var(--text-1);font-weight:700}

/* ---------- 空态 ---------- */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:16px;
  padding:56px 24px;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  background:var(--surface);
  text-align:center;
}
.empty-state .empty-icon{opacity:.6}
.empty-state .empty-icon svg{width:44px;height:44px;stroke:var(--primary-2);fill:none;stroke-width:1.5}
.empty-state p{color:var(--text-2);font-size:16px;margin:0}

/* ---------- 正文内嵌 CTA ---------- */
.inline-cta{
  margin-top:48px;
  padding:28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  position:relative;
  overflow:hidden;
}
.inline-cta::before{
  content:"";
  position:absolute;
  left:-60px;top:-60px;
  width:220px;height:220px;
  background:radial-gradient(circle,rgba(33,212,180,.22),transparent 68%);
  pointer-events:none;
}
.inline-cta-text{position:relative;z-index:1;max-width:520px}
.inline-cta-text h2{
  font-size:20px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:8px;
  letter-spacing:.015em;
}
.inline-cta-text p{font-size:14px;color:var(--text-2);margin:0;line-height:1.8}
.inline-cta .btn{position:relative;z-index:1}

/* ---------- 相关推荐 ---------- */
.related{padding:var(--section-y) 0 0;position:relative;z-index:1}
.related-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:26px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.related-head h2{
  font-size:clamp(20px,2.6vw,28px);
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.015em;
  line-height:1.4;
}
.related-head .more-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--text-2);
  transition:color var(--t);
}
.related-head .more-link svg{width:15px;height:15px;transition:transform var(--t)}
.related-head .more-link:hover{color:var(--primary)}
.related-head .more-link:hover svg{transform:translateX(3px)}

.post-card{
  display:flex;
  flex-direction:column;
  height:100%;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--surface-2);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(33,212,180,.45);box-shadow:var(--shadow-2)}
.post-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,#0E1626,#0A111E);
}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,0) 40%,rgba(5,8,15,.72));
}
.post-card .card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card h3{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  color:var(--text-1);
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color var(--t);
}
.post-card:hover h3{color:var(--primary)}
.post-card p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin:0;
}
.post-card .card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding-top:6px;
}
.post-card .card-foot .date{font-size:13px;color:var(--text-3)}
.post-card .card-foot .arrow{color:var(--primary);transition:transform var(--t)}
.post-card .card-foot .arrow svg{width:16px;height:16px}
.post-card:hover .card-foot .arrow{transform:translateX(3px)}

/* ---------- 文章底部导航 ---------- */
.article-foot{
  padding:var(--section-y) 0;
  position:relative;
  z-index:1;
}
.article-foot .foot-box{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:26px 28px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-1);
}
.article-foot .foot-box h2{
  font-size:18px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:6px;
}
.article-foot .foot-box p{font-size:14px;color:var(--text-3);margin:0}
.article-foot .foot-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:20px;
  bottom:24px;
  width:46px;height:46px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:rgba(14,22,38,.92);
  border:1px solid var(--line);
  color:var(--text-1);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity var(--t),transform var(--t),visibility var(--t),border-color var(--t),color var(--t);
  z-index:55;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.to-top svg{width:18px;height:18px}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--primary);color:var(--primary);box-shadow:0 0 0 3px rgba(33,212,180,.16)}
.to-top:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,212,180,.28)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  margin-top:var(--section-y);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.5),rgba(59,169,255,.2) 45%,transparent 75%);
}
.footer-main{padding:56px 0 30px}
.footer-brand p{
  font-size:14px;
  color:var(--text-3);
  line-height:1.85;
  margin:16px 0 16px;
  max-width:36ch;
}
.social-row{display:flex;flex-wrap:wrap;gap:8px}
.social-row span{
  font-size:12px;
  color:var(--text-3);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:3px 11px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14px;
  color:var(--text-3);
  transition:color var(--t),transform var(--t);
}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 32px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom-links a{color:var(--text-3);transition:color var(--t)}
.footer-bottom-links a:hover{color:var(--primary)}
.grid-gap-y > .cell{margin-bottom:26px}
@media (min-width:1024px){.grid-gap-y > .cell{margin-bottom:0}}

/* ---------- 入场动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity var(--t-slow),transform var(--t-slow)}
.js .reveal.in-view{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
}
@media (max-width:639px){
  .article-hero{padding:26px 0 28px}
  .inline-cta{padding:22px}
  .article-foot .foot-box{padding:22px}
  .inline-cta .btn,.article-foot .foot-actions .btn{width:100%}
  .article-foot .foot-actions{width:100%}
}

/* roulang page: category1 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A111E;
  --surface:rgba(255,255,255,.045);
  --surface-2:#0E1626;
  --line:rgba(255,255,255,.09);
  --primary:#21D4B4;
  --primary-2:#3BA9FF;
  --accent:#FF6A2B;
  --text-1:#EAF1FB;
  --text-2:#A7B5C9;
  --text-3:#6F7F96;
  --success:#35D07F;
  --danger:#FF6B6B;
  --radius-card:18px;
  --radius-media:20px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 12px 40px rgba(33,212,180,.18);
  --ease:220ms cubic-bezier(.2,.7,.3,1);
  --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-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,rgba(0,0,0,.85),transparent 68%);
  mask-image:radial-gradient(ellipse at 50% 0%,rgba(0,0,0,.85),transparent 68%);
}

body.is-locked{overflow:hidden;}

h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;background-color:transparent;transition:color var(--ease);}
a:hover{color:var(--primary);}
button{font-family:inherit;}
svg{display:block;}

::selection{background:rgba(33,212,180,.3);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}

.section{
  position:relative;
  padding:var(--sec-pad) 0;
  z-index:1;
}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

section[id],div[id]{scroll-margin-top:96px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  background:rgba(5,8,15,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.75),rgba(33,212,180,.08) 55%,transparent);
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.95);
  box-shadow:0 12px 34px rgba(0,0,0,.5);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:72px;
}

.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 8px 20px rgba(33,212,180,.32);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:800;color:var(--text-1);letter-spacing:.015em;}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.18em;}

.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--radius-pill);
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;left:50%;bottom:3px;
  height:2px;width:0;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 8px rgba(33,212,180,.85);
  transform:translateX(-50%);
  transition:width .25s ease;
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{width:16px;}
.nav-link.is-active{color:var(--text-1);background:rgba(33,212,180,.12);}
.nav-link.is-active::after{width:16px;}

.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.04);
  cursor:pointer;
  padding:0;
  place-items:center;
  transition:border-color var(--ease),background var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-2);border-radius:2px;margin:3px auto;transition:background var(--ease);}
.nav-toggle:hover{border-color:var(--primary);background:rgba(33,212,180,.08);}
.nav-toggle:hover span{background:var(--primary);}

.mobile-drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(330px,86vw);
  z-index:130;
  display:flex;
  flex-direction:column;
  padding:20px 20px 26px;
  background:rgba(6,10,18,.97);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-left:1px solid var(--line);
  transform:translateX(103%);
  transition:transform .32s cubic-bezier(.2,.7,.3,1);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:transparent;
  color:var(--text-2);
  font-size:18px;
  cursor:pointer;
  transition:color var(--ease),border-color var(--ease);
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1;}
.drawer-nav a{
  padding:14px 6px;
  font-size:19px;
  font-weight:600;
  color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:color var(--ease),transform var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);transform:translateX(3px);}
.drawer-foot{margin-top:22px;}
.drawer-mask{
  position:fixed;inset:0;z-index:120;
  background:rgba(2,5,10,.65);
  opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- buttons ---------- */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  cursor:pointer;
  text-align:center;
  overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  color:#04121A;
  font-weight:700;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12),0 10px 30px rgba(33,212,180,.35);
}
.btn-primary::after{
  content:"";
  position:absolute;top:-10%;left:-65%;
  width:42%;height:130%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);
  transform:skewX(-18deg);
  transition:left .6s ease;
}
.btn-primary:hover{color:#04121A;transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.18),0 16px 42px rgba(33,212,180,.46);}
.btn-primary:hover::after{left:125%;}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}

.btn-accent{
  background:linear-gradient(100deg,var(--accent),#FF9350);
  color:#210B00;
  font-weight:700;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16),0 10px 30px rgba(255,106,43,.32);
}
.btn-accent:hover{color:#210B00;transform:translateY(-2px);box-shadow:0 16px 40px rgba(255,106,43,.42);}
.btn-accent:active{transform:translateY(0);filter:brightness(.95);}

.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text-1);
}
.btn-ghost:hover{
  border-color:var(--primary);
  background:rgba(33,212,180,.08);
  color:var(--text-1);
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,212,180,.28);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:15px 30px;font-size:16px;}
.btn-block{width:100%;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
}
.link-arrow i{transition:transform var(--ease);}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- shared bits ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  margin-bottom:18px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--primary);
  background:rgba(33,212,180,.1);
  border:1px solid rgba(33,212,180,.28);
  border-radius:var(--radius-pill);
}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;
  padding:0 12px;
  font-size:12px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(33,212,180,.3);
  background:rgba(33,212,180,.12);
  color:var(--primary);
  white-space:nowrap;
}
.badge--blue{border-color:rgba(59,169,255,.3);background:rgba(59,169,255,.12);color:var(--primary-2);}
.badge--accent{border-color:rgba(255,106,43,.32);background:rgba(255,106,43,.12);color:var(--accent);}

.glass{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);
}

.section-head{max-width:740px;margin-bottom:44px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{
  font-size:clamp(22px,3vw,34px);
  font-weight:800;
  letter-spacing:.015em;
  line-height:1.42;
  color:var(--text-1);
}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-2);}

.bar-mark{
  display:inline-block;
  width:34px;height:3px;
  border-radius:2px;
  margin-bottom:16px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  box-shadow:0 0 12px rgba(33,212,180,.6);
}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:126px 0 84px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.36;
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(60% 70% at 12% 10%,rgba(33,212,180,.16),transparent 62%),
    linear-gradient(180deg,rgba(5,8,15,.86),rgba(5,8,15,.95) 58%,var(--bg-0));
}
.hero .container{position:relative;z-index:2;}

.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--text-2);}
.breadcrumb span{color:var(--text-3);}

.hero-grid{align-items:center;}
.hero-copy h1{
  font-size:clamp(28px,5vw,50px);
  font-weight:800;
  letter-spacing:.015em;
  line-height:1.24;
  color:var(--text-1);
}
.hero-sub{
  margin-top:18px;
  max-width:560px;
  font-size:17px;
  color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:10px 16px;
  margin-top:30px;
  font-size:13px;
  color:var(--text-3);
}
.meta-bar li{display:inline-flex;align-items:center;gap:8px;}
.meta-bar li+li::before{
  content:"";
  width:1px;height:12px;
  background:rgba(255,255,255,.18);
  margin-right:14px;
}

.hero-media{padding-left:0;}
.hero-card{
  position:relative;
  border-radius:var(--radius-media);
  padding:14px;
  overflow:hidden;
}
.hero-card img{
  width:100%;
  height:300px;
  object-fit:cover;
  border-radius:14px;
  background:linear-gradient(140deg,#0E1626,#123043);
}
.hero-float{
  position:absolute;
  left:28px;right:28px;bottom:28px;
  display:flex;align-items:center;gap:12px;
  padding:12px 16px;
  border-radius:14px;
  background:rgba(6,11,20,.86);
  border:1px solid rgba(33,212,180,.28);
  box-shadow:0 12px 30px rgba(0,0,0,.5);
}
.hero-float .dot{
  width:9px;height:9px;flex:0 0 9px;
  border-radius:50%;
  background:var(--success);
  box-shadow:0 0 0 4px rgba(53,208,127,.18);
}
.hero-float strong{display:block;font-size:14px;color:var(--text-1);line-height:1.5;}
.hero-float span{display:block;font-size:12.5px;color:var(--text-3);line-height:1.5;}

/* ---------- platform cards ---------- */
.platform-card{
  height:100%;
  display:flex;
  flex-direction:column;
  padding:28px 24px 24px;
  border-radius:var(--radius-card);
  background:var(--surface-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.platform-card::before{
  content:"";
  position:absolute;left:0;top:22px;bottom:22px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(33,212,180,0));
  opacity:.75;
}
.platform-card:hover{transform:translateY(-4px);border-color:rgba(33,212,180,.4);box-shadow:var(--shadow-hover);}
.platform-icon{
  width:48px;height:48px;
  display:grid;place-items:center;
  border-radius:14px;
  font-size:22px;
  color:var(--primary);
  background:rgba(33,212,180,.1);
  border:1px solid rgba(33,212,180,.24);
  margin-bottom:18px;
}
.platform-icon--blue{color:var(--primary-2);background:rgba(59,169,255,.1);border-color:rgba(59,169,255,.24);}
.platform-card h3{font-size:20px;font-weight:700;color:var(--text-1);}
.platform-card .platform-note{margin-top:8px;font-size:14.5px;color:var(--text-2);}
.spec-rows{margin:22px 0 24px;border-top:1px solid var(--line);}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;
  padding:11px 0;
  border-bottom:1px dashed rgba(255,255,255,.07);
  font-size:14px;
}
.spec-row span{color:var(--text-3);}
.spec-row strong{color:var(--text-1);font-weight:600;}
.platform-card .btn{margin-top:auto;}

/* ---------- compare ---------- */
.compare-card{
  height:100%;
  padding:30px 26px;
  border-radius:var(--radius-card);
  background:var(--surface-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.compare-card:hover{transform:translateY(-4px);border-color:rgba(33,212,180,.35);box-shadow:var(--shadow-hover);}
.compare-head{
  display:flex;align-items:center;gap:14px;
  padding-bottom:18px;
  margin-bottom:8px;
  border-bottom:1px solid var(--line);
}
.compare-head .platform-icon{margin-bottom:0;}
.compare-head h3{font-size:19px;font-weight:700;color:var(--text-1);}
.compare-head p{font-size:13px;color:var(--text-3);}
.compare-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:13px 0;
  border-bottom:1px dashed rgba(255,255,255,.07);
  font-size:14.5px;
}
.compare-list li:last-child{border-bottom:0;}
.compare-list i{color:var(--primary);font-size:13px;margin-top:7px;}
.compare-list .k{color:var(--text-3);}
.compare-list .v{margin-left:auto;text-align:right;color:var(--text-1);font-weight:600;}

/* ---------- env spec cards ---------- */
.env-card{
  height:100%;
  padding:26px 22px;
  border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.env-card:hover{transform:translateY(-4px);border-color:rgba(59,169,255,.35);box-shadow:0 12px 40px rgba(59,169,255,.14);}
.env-card .env-label{font-size:12.5px;letter-spacing:.08em;color:var(--primary-2);}
.env-card h3{margin:10px 0 16px;font-size:18px;font-weight:700;color:var(--text-1);}
.env-card ul li{
  display:flex;align-items:flex-start;gap:10px;
  padding:9px 0;
  font-size:14.5px;
  color:var(--text-2);
  border-bottom:1px dashed rgba(255,255,255,.06);
}
.env-card ul li:last-child{border-bottom:0;}
.env-card ul li strong{margin-left:auto;color:var(--text-1);font-weight:600;white-space:nowrap;}

/* ---------- download band ---------- */
.dl-band{
  border-radius:var(--radius-media);
  padding:34px 30px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.dl-buttons{display:flex;flex-wrap:wrap;gap:14px;flex:1 1 420px;}
.dl-btn{
  flex:1 1 190px;
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;
  border-radius:14px;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.12);
  color:var(--text-1);
  transition:transform var(--ease),border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.dl-btn i{font-size:20px;color:var(--primary);}
.dl-btn strong{display:block;font-size:15px;font-weight:700;line-height:1.5;}
.dl-btn span{display:block;font-size:12.5px;color:var(--text-3);line-height:1.5;}
.dl-btn:hover{color:var(--text-1);transform:translateY(-3px);border-color:rgba(33,212,180,.45);background:rgba(33,212,180,.08);box-shadow:0 12px 30px rgba(33,212,180,.16);}
.dl-qr{
  flex:0 0 auto;
  display:flex;align-items:center;gap:16px;
}
.qr-box{
  width:120px;height:120px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.16);
  background:
    repeating-linear-gradient(90deg,rgba(234,241,251,.9) 0 6px,rgba(5,8,15,0) 6px 12px),
    repeating-linear-gradient(0deg,rgba(234,241,251,.9) 0 6px,rgba(5,8,15,0) 6px 12px),
    #0C1424;
  background-size:100% 100%;
  display:grid;place-items:center;
  position:relative;
  overflow:hidden;
}
.qr-box::before{
  content:"";
  position:absolute;inset:12px;
  border-radius:8px;
  background:rgba(6,11,20,.92);
  border:1px solid rgba(33,212,180,.28);
}
.qr-box i{position:relative;z-index:2;font-size:22px;color:var(--primary);}
.qr-note{max-width:190px;font-size:13px;color:var(--text-3);}
.qr-note strong{display:block;color:var(--text-1);font-size:14.5px;margin-bottom:6px;font-weight:600;}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  position:relative;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--surface-2);
  box-shadow:var(--shadow-card);
  transition:border-color var(--ease),box-shadow var(--ease);
  overflow:hidden;
}
.faq-item::before{
  content:"";
  position:absolute;left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(33,212,180,0));
  opacity:0;
  transition:opacity var(--ease);
}
.faq-item:hover{border-color:rgba(33,212,180,.3);}
.faq-item.is-open{border-color:rgba(33,212,180,.42);box-shadow:var(--shadow-hover);}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;
  display:flex;align-items:center;gap:16px;
  padding:20px 22px;
  background:transparent;
  border:0;
  text-align:left;
  cursor:pointer;
  color:var(--text-1);
}
.faq-index{
  font-family:"Inter",system-ui,sans-serif;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--primary-2);
  min-width:26px;
}
.faq-text{flex:1;font-size:16.5px;font-weight:600;color:var(--text-1);transition:color var(--ease);}
.faq-q:hover .faq-text{color:var(--primary);}
.faq-icon{
  position:relative;
  width:26px;height:26px;flex:0 0 26px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.2);
  transition:border-color var(--ease),background var(--ease),transform var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;left:50%;top:50%;
  background:var(--text-2);
  transform:translate(-50%,-50%);
  transition:background var(--ease),opacity var(--ease);
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;}
.faq-item.is-open .faq-icon{border-color:var(--primary);background:rgba(33,212,180,.12);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--primary);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .3s cubic-bezier(.2,.7,.3,1);
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{
  padding:0 54px 22px 64px;
  font-size:15px;
  color:var(--text-2);
}

/* ---------- cta band ---------- */
.cta-band{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  padding:36px 32px;
  border-radius:var(--radius-media);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:800;color:var(--text-1);letter-spacing:.015em;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  z-index:1;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:72px 0 0;
}
.site-footer::before{
  content:"";
  position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.7),rgba(33,212,180,.06) 60%,transparent);
}
.grid-gap-y{row-gap:36px;}
.footer-brand p{margin-top:18px;font-size:14.5px;color:var(--text-2);max-width:340px;}
.social-row{display:flex;gap:10px;margin-top:20px;}
.social-row span{
  padding:6px 12px;
  font-size:12px;
  color:var(--text-3);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-pill);
}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14.5px;
  color:var(--text-2);
  transition:color var(--ease),transform var(--ease);
}
.footer-links a:hover{color:var(--primary);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;
  padding:22px 0;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom-links a{color:var(--text-3);font-size:13px;}
.footer-bottom-links a:hover{color:var(--primary);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease;}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero-media{margin-top:44px;}
  .hero-card img{height:270px;}
}

@media (max-width:1023px){
  :root{--sec-pad:72px;}
  .header-inner{height:64px;}
  .main-nav{display:none;}
  .nav-toggle{display:grid;}
  .header-actions .btn{display:none;}
  .hero{padding:112px 0 72px;}
  .cta-band{padding:30px 26px;}
  .dl-band{padding:28px 24px;}
}

@media (max-width:639px){
  :root{--sec-pad:56px;}
  .container{padding:0 20px;}
  .header-inner{height:60px;}
  .brand-mark{width:32px;height:32px;flex-basis:32px;border-radius:11px;}
  .brand-name{font-size:16px;}
  .hero{padding:100px 0 60px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;min-height:48px;}
  .hero-card img{height:220px;}
  .hero-float{left:18px;right:18px;bottom:18px;padding:10px 14px;}
  .meta-bar{gap:8px 10px;}
  .meta-bar li+li::before{margin-right:8px;}
  .section-head{margin-bottom:32px;}
  .platform-card,.compare-card,.env-card{padding:24px 20px;}
  .faq-q{padding:17px 18px;gap:12px;}
  .faq-text{font-size:15.5px;}
  .faq-a-inner p{padding:0 20px 20px 56px;font-size:14.5px;}
  .dl-btn{flex:1 1 100%;}
  .dl-qr{width:100%;justify-content:flex-start;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:379px){
  .brand-sub{display:none;}
  .meta-bar li+li::before{display:none;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#05080F;
  --bg-1:#0A111E;
  --surface:rgba(255,255,255,.045);
  --surface-2:#0E1626;
  --line:rgba(255,255,255,.09);
  --primary:#21D4B4;
  --primary-2:#3BA9FF;
  --accent:#FF6A2B;
  --text-1:#EAF1FB;
  --text-2:#A7B5C9;
  --text-3:#6F7F96;
  --success:#35D07F;
  --danger:#FF6B6B;
  --radius-card:18px;
  --radius-media:20px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 12px 40px rgba(33,212,180,.18);
  --space-section:96px;
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --t:220ms cubic-bezier(.2,.7,.3,1);
}

/* ============ 基础 reset ============ */
*,*::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:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-media);object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t),transform var(--t);}
a:hover,a:focus{color:var(--primary);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid rgba(33,212,180,.6);outline-offset:2px;border-radius:6px;}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background var(--t),box-shadow var(--t);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.55),rgba(59,169,255,.18) 45%,rgba(255,255,255,.02));
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.94);
  box-shadow:0 10px 30px rgba(0,0,0,.55);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:72px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;
  border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 6px 18px rgba(33,212,180,.28);
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.015em;color:var(--text-1);}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.22em;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--radius-pill);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:2px;
  transform:translateX(-50%) scaleX(0);
  width:16px;height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(33,212,180,.8);
  transition:transform var(--t);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{
  color:var(--text-1);
  background:rgba(33,212,180,.12);
}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-cta{
  margin-left:12px;
  padding:11px 22px;
  font-size:15px;
  font-weight:700;
  color:#04121A;
  border-radius:var(--radius-pill);
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12),0 10px 30px rgba(33,212,180,.35);
  white-space:nowrap;
}
.nav-cta:hover{color:#04121A;transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.18),0 14px 34px rgba(33,212,180,.45);}
.nav-cta:active{transform:translateY(0);filter:brightness(.94);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:none;
  background:transparent;
  cursor:pointer;
  padding:0;
  align-items:center;justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;width:22px;height:2px;border-radius:2px;
  background:var(--text-2);
  transition:background var(--t),transform var(--t);
}
.nav-toggle:hover span{background:var(--primary);}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;
  inset:0 0 0 auto;
  width:min(88vw,380px);
  background:rgba(8,13,24,.96);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid var(--line);
  z-index:90;
  transform:translateX(102%);
  transition:transform 320ms cubic-bezier(.2,.7,.3,1);
  display:flex;
  flex-direction:column;
  padding:20px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);
  background:transparent;color:var(--text-2);
  cursor:pointer;font-size:18px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:color var(--t),border-color var(--t),background var(--t);
}
.drawer-close:hover{color:var(--primary);border-color:rgba(33,212,180,.5);background:rgba(33,212,180,.08);}
.drawer-nav{display:flex;flex-direction:column;gap:28px;flex:1;}
.drawer-nav a{font-size:20px;color:var(--text-2);}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);}
.drawer-foot{margin-top:20px;}
.drawer-foot .nav-cta{display:block;text-align:center;margin:0;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(2,5,10,.7);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
  z-index:85;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  font-size:15px;
  font-weight:700;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  cursor:pointer;
  position:relative;
  overflow:hidden;
  white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),color var(--t),filter var(--t);
}
.btn-primary{
  color:#04121A;
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12),0 10px 30px rgba(33,212,180,.35);
}
.btn-primary::after{
  content:"";
  position:absolute;top:0;left:-120%;
  width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);
  transform:skewX(-18deg);
  transition:left 600ms cubic-bezier(.2,.7,.3,1);
}
.btn-primary:hover{color:#04121A;transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.2),0 16px 38px rgba(33,212,180,.45);}
.btn-primary:hover::after{left:130%;}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  color:var(--text-1);
  background:transparent;
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{color:var(--text-1);border-color:rgba(33,212,180,.6);background:rgba(33,212,180,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-accent{
  color:#160800;
  background:linear-gradient(100deg,var(--accent),#FF8B4D);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16),0 10px 30px rgba(255,106,43,.32);
}
.btn-accent:hover{color:#160800;transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.24),0 16px 38px rgba(255,106,43,.42);}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--primary);
  background:none;border:none;padding:6px 0;cursor:pointer;
}
.btn-text i{transition:transform var(--t);font-size:13px;}
.btn-text:hover{color:var(--primary-2);}
.btn-text:hover i{transform:translateX(3px);}
.btn:disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;filter:none;}
.btn-block{width:100%;}

/* ============ 通用标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  font-size:12px;line-height:1;
  border-radius:var(--radius-pill);
  border:1px solid rgba(33,212,180,.35);
  background:rgba(33,212,180,.12);
  color:var(--primary);
  white-space:nowrap;
}
.tag-blue{border-color:rgba(59,169,255,.35);background:rgba(59,169,255,.12);color:var(--primary-2);}
.tag-orange{border-color:rgba(255,106,43,.4);background:rgba(255,106,43,.14);color:#FF9B6B;}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:76px 0 84px;
  background:var(--bg-1);
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center;
  opacity:.32;
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,8,15,.86),rgba(5,8,15,.95)),
    radial-gradient(900px 420px at 12% 0%,rgba(33,212,180,.16),transparent 60%);
}
.hero-grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  opacity:.5;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{opacity:.6;}
.breadcrumb .current{color:var(--text-2);}
.hero-top{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,.95fr);gap:40px;align-items:center;}
.page-hero h1{
  font-size:clamp(28px,5vw,50px);
  font-weight:800;
  letter-spacing:.015em;
  line-height:1.28;
  margin:16px 0 0;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:18px;
  font-size:17px;
  color:var(--text-2);
  max-width:640px;
}
.hero-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  margin-top:22px;
  font-size:13px;color:var(--text-3);
}
.hero-meta .divider{width:1px;height:14px;background:var(--line);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-quick{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;
}
.hero-quick a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;
  font-size:14px;color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.03);
}
.hero-quick a:hover{color:var(--primary);border-color:rgba(33,212,180,.45);background:rgba(33,212,180,.08);}
.hero-side{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);
  border-radius:var(--radius-card);
  padding:24px;
}
.hero-side h2{
  font-size:16px;font-weight:700;color:var(--text-1);
  margin-bottom:16px;
}
.hero-side-list li{
  display:flex;align-items:center;gap:12px;
  padding:12px 0;
  border-bottom:1px dashed rgba(255,255,255,.08);
  font-size:14px;color:var(--text-2);
}
.hero-side-list li:last-child{border-bottom:none;padding-bottom:0;}
.hero-side-list .num{
  font-size:13px;font-weight:700;color:var(--primary-2);
  font-variant-numeric:tabular-nums;
  min-width:26px;
}
.hero-side-note{
  margin-top:18px;padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 板块通用 ============ */
.section{padding:var(--space-section) 0;position:relative;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:52px;}
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.22em;
  color:var(--primary);text-transform:uppercase;
  margin-bottom:14px;
}
.section-label::before{content:"";width:22px;height:1px;background:var(--primary);box-shadow:0 0 8px rgba(33,212,180,.8);}
.section-head h2{
  font-size:clamp(22px,3vw,34px);
  font-weight:800;
  letter-spacing:.015em;
  line-height:1.35;
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;}

/* ============ 步骤时间线 ============ */
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.steps::before{
  content:"";
  position:absolute;
  top:28px;left:6%;right:6%;
  height:1px;
  background-image:linear-gradient(90deg,rgba(33,212,180,.55) 50%,transparent 50%);
  background-size:14px 1px;
  z-index:0;
}
.step-card{
  position:relative;
  z-index:1;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 22px 24px;
  box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(33,212,180,.4);box-shadow:var(--shadow-hover);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:56px;height:56px;
  border-radius:50%;
  font-size:18px;font-weight:800;
  font-variant-numeric:tabular-nums;
  color:#04121A;
  background:linear-gradient(140deg,var(--primary),var(--primary-2));
  box-shadow:0 8px 22px rgba(33,212,180,.28);
  margin-bottom:18px;
}
.step-card h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--text-2);}
.step-card .step-foot{
  margin-top:16px;padding-top:14px;border-top:1px dashed rgba(255,255,255,.09);
  font-size:13px;color:var(--text-3);
}

/* ============ 功能截图轮播 ============ */
.gallery{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:36px;align-items:center;}
.gallery-stage{
  position:relative;
  border-radius:var(--radius-media);
  border:1px solid rgba(33,212,180,.25);
  background:var(--bg-0);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.gallery-slide{display:none;position:relative;}
.gallery-slide.is-active{display:block;animation:fadeUp 380ms cubic-bezier(.2,.7,.3,1);}
.gallery-slide img{width:100%;aspect-ratio:16/10;border-radius:0;}
.gallery-caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:18px 20px;
  background:linear-gradient(180deg,transparent,rgba(5,8,15,.92));
  font-size:14px;color:var(--text-1);
}
.gallery-caption span{display:block;font-size:13px;color:var(--text-3);margin-top:4px;}
.gallery-nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);
  background:rgba(5,8,15,.7);
  color:var(--text-1);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:color var(--t),border-color var(--t),background var(--t);
}
.gallery-nav:hover{color:var(--primary);border-color:rgba(33,212,180,.55);background:rgba(33,212,180,.14);}
.gallery-nav.prev{left:12px;}
.gallery-nav.next{right:12px;}
.gallery-info h3{font-size:22px;font-weight:700;margin-bottom:12px;}
.gallery-info p{font-size:15px;color:var(--text-2);margin-bottom:22px;}
.gallery-thumbs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;}
.thumb{
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  background:var(--surface-2);
  cursor:pointer;
  padding:0;
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.thumb img{width:100%;aspect-ratio:1/1;border-radius:0;}
.thumb:hover{transform:translateY(-3px);border-color:rgba(33,212,180,.45);}
.thumb.is-active{border-color:var(--primary);box-shadow:0 0 0 2px rgba(33,212,180,.22);}
.gallery-dots{display:flex;gap:8px;margin-top:18px;}
.gallery-dots button{
  width:26px;height:4px;border-radius:99px;border:none;padding:0;
  background:rgba(255,255,255,.16);cursor:pointer;transition:background var(--t),width var(--t);
}
.gallery-dots button.is-active{background:var(--primary);width:38px;box-shadow:0 0 10px rgba(33,212,180,.6);}

/* ============ 图文交替 ============ */
.split{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:44px;
  align-items:center;
}
.split + .split{margin-top:72px;}
.split-media{
  border-radius:var(--radius-media);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:var(--bg-0);
}
.split-media img{width:100%;aspect-ratio:16/11;transition:transform 420ms cubic-bezier(.2,.7,.3,1);}
.split-media:hover img{transform:scale(1.04);}
.split-body h3{font-size:clamp(20px,2.4vw,26px);font-weight:700;margin:14px 0 14px;}
.split-body p{color:var(--text-2);margin-bottom:14px;}
.split-list{margin:20px 0 24px;display:flex;flex-direction:column;gap:10px;}
.split-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2);}
.split-list i{color:var(--primary);font-size:13px;margin-top:7px;}
.split-reverse .split-media{order:2;}
.split-reverse .split-body{order:1;}

/* ============ 要点清单 ============ */
.check-panel{
  display:grid;
  grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);
  gap:40px;
  align-items:start;
}
.check-list{display:grid;gap:14px;}
.check-list li{
  display:flex;gap:14px;
  padding:18px 20px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-left:3px solid rgba(33,212,180,.5);
  border-radius:14px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.check-list li:hover{transform:translateY(-3px);border-color:rgba(33,212,180,.4);border-left-color:var(--primary);box-shadow:var(--shadow-hover);}
.check-list i{color:var(--primary);margin-top:6px;font-size:15px;}
.check-list strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px;}
.check-list span{font-size:14.5px;color:var(--text-2);}
.check-aside{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  border-radius:var(--radius-card);
  padding:26px;
}
.check-aside h3{font-size:19px;font-weight:700;margin-bottom:14px;}
.check-aside p{font-size:14.5px;color:var(--text-2);margin-bottom:18px;}
.check-aside .mini-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.09);
  font-size:14px;color:var(--text-2);
}
.check-aside .mini-row:last-of-type{border-bottom:none;}
.check-aside .mini-row b{color:var(--primary);font-weight:700;}

/* ============ FAQ 手风琴 ============ */
.faq-wrap{max-width:880px;}
.faq-wrap .accordion{
  background:transparent;
  border:none;
  margin:0;
}
.faq-wrap .accordion .accordion-item{
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-wrap .accordion .accordion-item:hover{border-color:rgba(33,212,180,.3);}
.faq-wrap .accordion .accordion-item.is-active{border-color:rgba(33,212,180,.45);box-shadow:var(--shadow-hover);}
.faq-wrap .accordion .accordion-title{
  position:relative;
  display:flex;align-items:center;gap:16px;
  padding:20px 56px 20px 22px;
  font-size:16.5px;font-weight:600;color:var(--text-1);
  border:none;background:transparent;
}
.faq-wrap .accordion .accordion-title::before{
  content:"\f067";
  font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;color:var(--primary);
  border:1px solid rgba(33,212,180,.4);
  background:rgba(33,212,180,.1);
  transition:transform var(--t),background var(--t);
}
.faq-wrap .accordion .accordion-item.is-active .accordion-title::before{
  content:"\f068";background:rgba(33,212,180,.2);
}
.faq-wrap .accordion .accordion-title .idx{
  font-size:14px;font-weight:700;color:var(--primary-2);
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}
.faq-wrap .accordion .accordion-title:hover{color:var(--text-1);background:rgba(33,212,180,.04);}
.faq-wrap .accordion .accordion-content{
  padding:0 22px 22px 62px;
  border:none;background:transparent;
  color:var(--text-2);font-size:15px;
  animation:fadeUp 200ms cubic-bezier(.2,.7,.3,1);
}
.faq-wrap .accordion .accordion-item.is-active::before{content:"";}

/* ============ CTA 条带 ============ */
.cta-band{
  position:relative;
  padding:34px 34px;
  border-radius:24px;
  border:1px solid rgba(255,255,255,.1);
  background:linear-gradient(100deg,rgba(33,212,180,.14),rgba(59,169,255,.1) 55%,rgba(255,255,255,.03));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);font-weight:800;letter-spacing:.015em;}
.cta-band p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding-top:72px;
  margin-top:0;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.6),rgba(59,169,255,.2) 40%,transparent);
}
.grid-gap-y{row-gap:34px;}
.footer-brand p{font-size:14px;color:var(--text-2);margin-top:16px;max-width:340px;}
.social-row{display:flex;gap:10px;margin-top:18px;font-size:12px;color:var(--text-3);}
.social-row span{
  padding:5px 12px;border:1px solid var(--line);border-radius:var(--radius-pill);
  background:rgba(255,255,255,.03);
}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text-1);margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--primary);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;
  padding:22px 0 30px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom-links a{color:var(--text-3);}
.footer-bottom-links a:hover{color:var(--primary);}

/* ============ 动效 ============ */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(12px);}
  to{opacity:1;transform:translateY(0);}
}
.reveal{opacity:0;transform:translateY(12px);transition:opacity 620ms cubic-bezier(.2,.7,.3,1),transform 620ms cubic-bezier(.2,.7,.3,1);}
.reveal.is-visible{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  :root{--space-section:80px;}
  .hero-top{grid-template-columns:1fr;gap:32px;}
}
@media screen and (max-width:1023px){
  :root{--space-section:72px;}
  .main-nav,.header-inner > .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:64px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps::before{display:none;}
  .gallery{grid-template-columns:1fr;gap:28px;}
  .check-panel{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:26px;}
  .split-reverse .split-media{order:1;}
  .split-reverse .split-body{order:2;}
  .split + .split{margin-top:56px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .header-inner{height:60px;}
  .page-hero{padding:52px 0 60px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:639px){
  :root{--space-section:56px;}
  .steps{grid-template-columns:1fr;}
  .gallery-thumbs{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;}
  .section-head{margin-bottom:34px;}
  .cta-band{padding:26px 20px;border-radius:18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-wrap .accordion .accordion-content{padding-left:22px;}
}
@media screen and (max-width:480px){
  .brand-name{font-size:15px;}
  .brand-sub{font-size:10px;letter-spacing:.16em;}
  .page-hero h1{font-size:27px;}
  .hero-meta{font-size:12px;gap:8px;}
  .step-card{padding:22px 18px;}
}

/* roulang page: category3 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A111E;
  --surface:rgba(255,255,255,.045);
  --surface-2:#0E1626;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --primary:#21D4B4;
  --primary-2:#3BA9FF;
  --accent:#FF6A2B;
  --text-1:#EAF1FB;
  --text-2:#A7B5C9;
  --text-3:#6F7F96;
  --success:#35D07F;
  --danger:#FF6B6B;
  --radius-card:18px;
  --radius-img:20px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 12px 40px rgba(33,212,180,.18);
  --space-block:96px;
  --dur:220ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SFMono-Regular",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img);object-fit:cover;}
a{color:var(--text-1);text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
a:hover{color:var(--primary);}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.015em;color:var(--text-1);line-height:1.35;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,212,180,.28);border-radius:8px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
.grid-gap-y{row-gap:28px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:80;
  height:60px;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.7),rgba(33,212,180,.12) 45%,rgba(255,255,255,0) 90%);
  pointer-events:none;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.92);
  box-shadow:0 10px 30px rgba(0,0,0,.5);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:60px;
  gap:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;
  border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 6px 18px rgba(33,212,180,.32);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.04em;color:var(--text-1);}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.16em;}
.brand:hover .brand-name{color:var(--primary);}

.main-nav{display:none;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:8px 14px;
  border-radius:var(--radius-pill);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(33,212,180,.8);
  transform:translateX(-50%);
  transition:width 250ms var(--ease);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{width:16px;}
.nav-link.is-active{
  color:var(--text-1);
  background:rgba(33,212,180,.12);
}
.nav-link.is-active::after{width:16px;}

.nav-cta{display:none;}
.nav-toggle{
  width:44px;height:44px;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border-radius:12px;
  border:1px solid var(--line);
}
.nav-toggle span{
  display:block;
  width:20px;height:2px;
  border-radius:2px;
  background:var(--text-1);
  transition:background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.nav-toggle:hover span{background:var(--primary);}

.mobile-drawer{
  position:fixed;
  inset:0 0 0 auto;
  width:min(88vw,380px);
  background:rgba(8,13,23,.96);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform 320ms var(--ease);
  z-index:100;
  display:flex;
  flex-direction:column;
  padding:22px 24px 28px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;
}
.drawer-close:hover{color:var(--primary);border-color:rgba(33,212,180,.5);}
.drawer-nav{display:flex;flex-direction:column;gap:22px;}
.drawer-nav a{font-size:19px;color:var(--text-2);padding-left:2px;}
.drawer-nav a.is-active{color:var(--primary);}
.drawer-foot{margin-top:auto;padding-top:26px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;justify-content:center;}
.drawer-backdrop{
  position:fixed;inset:0;
  background:rgba(3,6,12,.6);
  opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
  z-index:90;
}
.drawer-backdrop.is-open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
  position:relative;
  overflow:hidden;
}
.btn-primary{
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  color:#04121A;
  box-shadow:0 10px 30px rgba(33,212,180,.35),inset 0 0 0 1px rgba(255,255,255,.12);
}
.btn-primary::before{
  content:"";
  position:absolute;
  top:0;left:-60%;
  width:45%;height:100%;
  background:linear-gradient(100deg,rgba(255,255,255,0),rgba(255,255,255,.5),rgba(255,255,255,0));
  transform:skewX(-18deg);
  opacity:0;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 16px 40px rgba(33,212,180,.45),inset 0 0 0 1px rgba(255,255,255,.18);
  color:#04121A;
}
.btn-primary:hover::before{opacity:1;animation:sweep .6s var(--ease);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-1);
}
.btn-ghost:hover{
  border-color:rgba(33,212,180,.6);
  background:rgba(33,212,180,.08);
  color:var(--text-1);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-weight:600;
  font-size:15px;
}
.btn-link i{transition:transform var(--dur) var(--ease);}
.btn-link:hover i{transform:translateX(3px);}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none;}
@keyframes sweep{from{left:-60%;}to{left:120%;}}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  line-height:1;
  border:1px solid rgba(33,212,180,.32);
  background:rgba(33,212,180,.12);
  color:var(--primary);
}
.badge-blue{border-color:rgba(59,169,255,.32);background:rgba(59,169,255,.12);color:var(--primary-2);}
.badge-accent{border-color:rgba(255,106,43,.34);background:rgba(255,106,43,.12);color:var(--accent);}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;
  padding:120px 0 78px;
  background-image:linear-gradient(180deg,rgba(5,8,15,.86),rgba(5,8,15,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.5;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  max-width:820px;
  margin:0 auto;
  text-align:center;
}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--surface);
  font-size:13px;
  color:var(--text-2);
  margin-bottom:22px;
}
.status-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--success);
  box-shadow:0 0 10px rgba(53,208,127,.9);
}
.page-hero h1{
  font-size:clamp(28px,5vw,48px);
  font-weight:800;
  letter-spacing:.02em;
  margin-bottom:18px;
}
.page-hero .hero-sub{
  color:var(--text-2);
  font-size:clamp(15px,2vw,17px);
  max-width:640px;
  margin:0 auto 30px;
}
.search-box{
  display:flex;
  align-items:center;
  gap:10px;
  width:100%;
  max-width:560px;
  margin:0 auto;
  padding:8px 8px 8px 20px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);
  background:rgba(10,17,30,.82);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.search-box:focus-within{
  border-color:rgba(33,212,180,.6);
  box-shadow:0 0 0 3px rgba(33,212,180,.18),var(--shadow-card);
}
.search-box i{color:var(--text-3);font-size:15px;}
.search-box input{
  flex:1 1 auto;
  min-width:0;
  background:transparent;
  border:0;
  color:var(--text-1);
  font-size:15px;
  padding:10px 0;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{outline:none;box-shadow:none;}
.search-box .btn{min-height:44px;padding:0 22px;}

.hero-meta{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:8px 18px;
  margin-top:26px;
  font-size:13px;
  color:var(--text-3);
}
.hero-meta li{display:inline-flex;align-items:center;gap:8px;}
.hero-meta li+li::before{
  content:"";
  width:1px;height:11px;
  background:var(--line-strong);
  margin-right:10px;
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--space-block) 0;position:relative;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:42px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  font-size:clamp(22px,3vw,34px);
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:16px;margin:0;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.22em;
  color:var(--primary);
  margin-bottom:12px;
  text-transform:uppercase;
}

/* ---------- 筛选胶囊 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:10px;
  margin-bottom:36px;
}
.filter-chip{
  height:38px;
  padding:0 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--text-2);
  font-size:14px;
  transition:all var(--dur) var(--ease);
}
.filter-chip:hover{color:var(--text-1);border-color:rgba(33,212,180,.45);}
.filter-chip.is-active{
  background:rgba(33,212,180,.14);
  border-color:rgba(33,212,180,.55);
  color:var(--primary);
  box-shadow:0 0 0 1px rgba(33,212,180,.18);
}
.filter-count{
  text-align:center;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:30px;
}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:56px;}
.faq-group:last-child{margin-bottom:0;}
.group-title{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:clamp(19px,2.4vw,22px);
  margin-bottom:22px;
}
.group-title .group-line{
  flex:1 1 auto;
  height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.45),rgba(255,255,255,0));
}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  position:relative;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--surface-2);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-item[hidden]{display:none !important;}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));
  box-shadow:0 0 14px rgba(33,212,180,.7);
  opacity:0;
  transition:opacity var(--dur) var(--ease);
}
.faq-item:hover{border-color:rgba(33,212,180,.35);}
.faq-item.is-open{
  border-color:rgba(33,212,180,.5);
  box-shadow:var(--shadow-hover);
}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  display:flex;
  align-items:center;
  gap:16px;
  width:100%;
  padding:20px 22px;
  text-align:left;
  color:var(--text-1);
  font-size:16px;
  font-weight:600;
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-num{
  flex:0 0 auto;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--primary-2);
}
.faq-text{flex:1 1 auto;}
.faq-icon{
  flex:0 0 28px;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  position:relative;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--text-2);
  transform:translate(-50%,-50%);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;}
.is-open .faq-icon{
  border-color:rgba(33,212,180,.6);
  background:rgba(33,212,180,.14);
}
.is-open .faq-icon::before{background:var(--primary);}
.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);background:var(--primary);}
.faq-a{
  padding:0 22px 22px 60px;
  color:var(--text-2);
  font-size:15px;
  animation:fadeUp 200ms var(--ease);
}
.faq-a p{margin:0;}
.faq-a p+p{margin-top:10px;}
@keyframes fadeUp{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:translateY(0);}}

/* ---------- 自助排查（图文） ---------- */
.route-block{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:center;
}
.route-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  position:relative;
}
.route-media img{width:100%;height:100%;min-height:220px;transition:transform 420ms var(--ease);}
.route-media:hover img{transform:scale(1.04);}
.route-list{display:flex;flex-direction:column;gap:18px;margin-top:26px;}
.route-list li{
  display:flex;
  gap:14px;
  padding:16px 18px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--surface);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.route-list li:hover{border-color:rgba(33,212,180,.4);transform:translateY(-2px);}
.route-list i{color:var(--primary);font-size:16px;margin-top:5px;}
.route-list strong{display:block;font-size:16px;margin-bottom:4px;}
.route-list span{color:var(--text-2);font-size:14px;}

/* ---------- 反馈表单 ---------- */
.feedback-wrap{
  max-width:820px;
  margin:0 auto;
  padding:36px 28px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.14);
}
.form-field{margin-bottom:22px;}
.form-field label{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:8px;
  letter-spacing:.04em;
}
.form-field .req{color:var(--accent);margin-left:4px;}
.form-input,.form-textarea{
  width:100%;
  background:#0C1424;
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-input);
  color:var(--text-1);
  padding:13px 16px;
  font-size:15px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.form-textarea{min-height:132px;resize:vertical;line-height:1.8;}
.form-input::placeholder,.form-textarea::placeholder{color:var(--text-3);}
.form-input:focus,.form-textarea:focus{
  outline:none;
  border-color:rgba(33,212,180,.7);
  box-shadow:0 0 0 3px rgba(33,212,180,.18);
}
.form-input.has-error,.form-textarea.has-error{
  border-color:var(--danger);
  box-shadow:0 0 0 3px rgba(255,107,107,.16);
}
.field-hint{font-size:12px;color:var(--text-3);margin-top:6px;}
.form-alert{
  display:none;
  align-items:flex-start;
  gap:10px;
  padding:14px 16px;
  border-radius:var(--radius-input);
  font-size:14px;
  margin-bottom:20px;
  border:1px solid transparent;
}
.form-alert.is-visible{display:flex;}
.form-alert.is-ok{border-color:rgba(53,208,127,.4);background:rgba(53,208,127,.1);color:var(--success);}
.form-alert.is-err{border-color:rgba(255,107,107,.4);background:rgba(255,107,107,.1);color:var(--danger);}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:8px;}
.form-foot .btn{min-width:160px;}
.form-foot span{font-size:13px;color:var(--text-3);}

/* ---------- CTA 条带 ---------- */
.cta-band{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(33,212,180,.12),rgba(59,169,255,.08) 60%,rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
  padding:32px 28px;
  display:flex;
  flex-direction:column;
  gap:22px;
  align-items:flex-start;
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:10px;}
.cta-band p{color:var(--text-2);margin:0;font-size:15px;}
.cta-band .btn{min-width:190px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  position:relative;
  padding-top:64px;
  margin-top:0;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(33,212,180,.7),rgba(33,212,180,.12) 40%,rgba(255,255,255,0) 90%);
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--text-2);font-size:14px;max-width:320px;}
.social-row{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;}
.social-row span{
  height:26px;
  display:inline-flex;
  align-items:center;
  padding:0 12px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--surface);
  font-size:12px;
  color:var(--text-3);
}
.footer-col h4{font-size:15px;margin-bottom:18px;letter-spacing:.06em;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-links a:hover{color:var(--primary);transform:translateX(2px);}
.footer-main{padding-bottom:44px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  flex-direction:column;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:8px 18px;}
.footer-bottom-links a{color:var(--text-3);}
.footer-bottom-links a:hover{color:var(--primary);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-visible{opacity:1;transform:translateY(0);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .container{padding-left:26px;padding-right:26px;}
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:36px 40px;}
  .cta-band > div{max-width:620px;}
}
@media (min-width:1024px){
  :root{--space-block:96px;}
  .container{padding-left:32px;padding-right:32px;}
  .site-header{height:72px;}
  .header-inner{height:72px;}
  .nav-toggle{display:none;}
  .main-nav{display:flex;align-items:center;gap:4px;}
  .nav-cta{display:inline-flex;min-height:42px;padding:0 22px;}
  .page-hero{padding:150px 0 96px;}
  .route-block{grid-template-columns:1.05fr .95fr;gap:48px;}
  .faq-q{padding:22px 26px;}
  .faq-a{padding:0 26px 24px 66px;}
  .feedback-wrap{padding:44px 48px;}
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}
@media (min-width:1200px){
  .container{max-width:1200px;}
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}
@media (max-width:1023px){
  :root{--space-block:72px;}
}
@media (max-width:639px){
  :root{--space-block:56px;}
  .page-hero{padding:100px 0 64px;}
  .search-box{padding:6px 6px 6px 16px;}
  .search-box .btn{padding:0 18px;font-size:14px;}
  .hero-meta{font-size:12px;gap:6px 12px;}
  .hero-meta li+li::before{margin-right:6px;}
  .faq-q{padding:16px 16px;font-size:15px;gap:12px;}
  .faq-a{padding:0 16px 18px 16px;}
  .feedback-wrap{padding:26px 20px;}
  .form-foot .btn{width:100%;}
  .footer-bottom{text-align:left;}
}
@media (max-width:480px){
  .brand-sub{display:none;}
  .hero-kicker{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}