/* roulang page: index */
:root{
  --bg:#07111F;
  --bg-2:#0B1F33;
  --glass:rgba(12,32,54,.58);
  --glass-strong:rgba(10,26,44,.86);
  --primary:#2DE2C5;
  --primary-2:#4D7CFE;
  --accent:#FF7A45;
  --accent-2:#8B5CF6;
  --text:#EAF4FF;
  --muted:#9FB3C8;
  --line:rgba(82,225,255,.16);
  --line-strong:rgba(82,225,255,.34);
  --danger:#FF5C7A;
  --radius:20px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow:0 18px 50px rgba(0,0,0,.38);
  --shadow-soft:0 10px 30px rgba(0,0,0,.26);
  --glow:0 0 24px rgba(45,226,197,.28);
  --maxw:1240px;
  --t:.24s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(82,225,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(82,225,255,.045) 1px,transparent 1px);
  background-size:68px 68px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--text);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.site-header,.site-main,.site-footer{position:relative;z-index:2;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.row{max-width:var(--maxw);}
.section{padding:96px 0;position:relative;}
.section-sm{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.4px;color:var(--primary);
  background:rgba(45,226,197,.08);
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:18px;
  text-transform:uppercase;
}
.section-tag i{font-size:12px;}
.section-title{font-size:34px;line-height:1.3;font-weight:750;margin-bottom:16px;}
.section-title strong{color:var(--primary);font-weight:750;}
.section-desc{color:var(--muted);font-size:16.5px;line-height:1.9;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:12px;
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-2) 100%);
  color:#031420;box-shadow:0 8px 26px rgba(45,226,197,.26);
}
.btn-primary:hover{transform:translateY(-2px);color:#031420;box-shadow:0 12px 34px rgba(45,226,197,.42);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  background:rgba(255,255,255,.035);border-color:var(--line);color:var(--text);
}
.btn-ghost:hover{background:rgba(45,226,197,.1);border-color:var(--line-strong);color:var(--primary);transform:translateY(-2px);}
.btn-round{border-radius:999px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);
}
.link-more i{font-size:12px;transition:transform var(--t);}
.link-more:hover i{transform:translateX(4px);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(7,17,31,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 24px;height:70px;
  display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);font-weight:800;font-size:17.5px;letter-spacing:.4px;flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(140deg,var(--primary),var(--primary-2));
  display:grid;place-items:center;color:#03131f;font-weight:900;font-size:17px;
  box-shadow:0 0 20px rgba(45,226,197,.4);
}
.brand-text span{color:var(--primary);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:10px;}
.nav-links a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--radius-xs);
  font-size:15px;color:var(--muted);font-weight:500;
}
.nav-links a:hover{color:var(--text);background:rgba(82,225,255,.08);}
.nav-links a.active{color:var(--primary);background:rgba(45,226,197,.1);box-shadow:inset 0 0 0 1px rgba(45,226,197,.18);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-search{position:relative;width:270px;}
.nav-search i.search-ico{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:13.5px;pointer-events:none;}
.nav-search input{
  width:100%;height:42px;margin:0;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text);font-size:14px;padding:0 58px 0 38px;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.nav-search input::placeholder{color:rgba(159,179,200,.72);}
.nav-search input:focus{
  outline:none;border-color:rgba(45,226,197,.55);
  background:rgba(45,226,197,.05);box-shadow:0 0 0 3px rgba(45,226,197,.12);
}
.nav-search kbd{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-family:inherit;font-size:11px;color:var(--muted);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;line-height:1.5;
  background:rgba(255,255,255,.03);
}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--muted);
  cursor:pointer;transition:all var(--t);
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong);box-shadow:0 0 16px rgba(45,226,197,.2);}
.menu-toggle{display:none;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,9,17,.66);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:95;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(88vw,360px);z-index:96;
  background:var(--glass-strong);backdrop-filter:blur(20px);
  border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:22px 22px 26px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;flex:1;overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 14px;border-radius:12px;color:var(--muted);font-size:15.5px;
  border:1px solid transparent;min-height:48px;
}
.drawer-nav a:hover{color:var(--text);background:rgba(82,225,255,.07);}
.drawer-nav a.active{color:var(--primary);background:rgba(45,226,197,.1);border-color:rgba(45,226,197,.22);}
.drawer-search{position:relative;margin-bottom:18px;}
.drawer-search input{
  width:100%;height:44px;margin:0;border-radius:12px;padding:0 16px 0 38px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);font-size:14.5px;
}
.drawer-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(45,226,197,.14);}
.drawer-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:13px;}
.drawer-foot{padding-top:18px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}

/* ============ Hero ============ */
.hero{position:relative;padding:104px 0 92px;overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.42;
}
.hero-overlay{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 480px at 78% 18%,rgba(77,124,254,.22),transparent 66%),
    radial-gradient(700px 420px at 12% 78%,rgba(45,226,197,.14),transparent 68%),
    linear-gradient(180deg,rgba(7,17,31,.82) 0%,rgba(7,17,31,.93) 62%,var(--bg) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13.5px;color:var(--primary);
  background:rgba(45,226,197,.08);border:1px solid var(--line);
  border-radius:999px;padding:6px 15px;margin-bottom:22px;
}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 0 rgba(45,226,197,.6);animation:pulse 2.1s infinite;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(45,226,197,.55);}
  70%{box-shadow:0 0 0 12px rgba(45,226,197,0);}
  100%{box-shadow:0 0 0 0 rgba(45,226,197,0);}
}
.hero h1{
  font-size:50px;line-height:1.18;font-weight:800;letter-spacing:.4px;margin-bottom:22px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--primary) 0%,var(--primary-2) 62%,var(--accent-2) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:var(--muted);font-size:18px;line-height:1.9;max-width:600px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13.5px;color:var(--muted);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;
}
.chip i{color:var(--primary);font-size:12px;}

.hero-panel{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:24px;
  padding:28px;
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(16px);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.panel-title{font-size:16px;font-weight:700;display:flex;align-items:center;gap:9px;}
.panel-title i{color:var(--primary);}
.panel-status{font-size:12.5px;color:var(--primary);background:rgba(45,226,197,.1);border-radius:999px;padding:3px 11px;border:1px solid rgba(45,226,197,.22);}
.panel-rows{display:flex;flex-direction:column;gap:2px;margin-bottom:20px;}
.panel-row{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-bottom:1px dashed rgba(82,225,255,.13);}
.panel-row:last-child{border-bottom:0;}
.panel-row .k{color:var(--muted);font-size:14.5px;display:flex;align-items:center;gap:9px;}
.panel-row .k i{color:var(--primary-2);font-size:13px;width:16px;text-align:center;}
.panel-row .v{font-size:16px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;}
.panel-row .v.warm{color:var(--accent);}
.panel-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;margin-top:6px;}
.panel-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--primary-2));}
.panel-cta{display:flex;gap:10px;}
.panel-cta .btn{flex:1;}

/* ============ 痛点 ============ */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.pain-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;transition:all var(--t);position:relative;overflow:hidden;
  backdrop-filter:blur(12px);
}
.pain-card::after{
  content:"";position:absolute;left:0;top:0;height:100%;width:3px;
  background:linear-gradient(180deg,var(--primary),transparent);
  opacity:0;transition:opacity var(--t);
}
.pain-card:hover{border-color:var(--line-strong);transform:translateY(-5px);box-shadow:var(--shadow);}
.pain-card:hover::after{opacity:1;}
.pain-ico{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(45,226,197,.16),rgba(77,124,254,.14));
  color:var(--primary);font-size:19px;margin-bottom:18px;border:1px solid var(--line);
}
.pain-card h3{font-size:18.5px;line-height:1.5;margin-bottom:10px;}
.pain-card p{color:var(--muted);font-size:14.5px;line-height:1.8;}

/* ============ 方案 ============ */
.solution-layout{display:grid;grid-template-columns:330px 1fr;gap:52px;align-items:start;}
.solution-side{position:sticky;top:104px;}
.solution-side .section-title{font-size:30px;}
.solution-side p{color:var(--muted);font-size:15.5px;margin:14px 0 26px;}
.side-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;}
.side-list li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--muted);}
.side-list i{color:var(--primary);font-size:13px;}
.solution-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.sol-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;transition:all var(--t);backdrop-filter:blur(12px);display:flex;flex-direction:column;
}
.sol-card:hover{border-color:var(--line-strong);transform:translateY(-5px);box-shadow:var(--shadow);}
.sol-card.offset{transform:translateY(30px);}
.sol-card.offset:hover{transform:translateY(25px);}
.sol-card.wide{grid-column:span 2;}
.sol-card.wide.offset{transform:translateY(30px);}
.sol-card.wide:hover{transform:translateY(-5px);}
.sol-card.wide.offset:hover{transform:translateY(25px);}
.sol-top{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.sol-ico{
  width:48px;height:48px;border-radius:15px;display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(140deg,rgba(45,226,197,.18),rgba(139,92,246,.16));
  color:var(--primary);font-size:20px;border:1px solid var(--line);
}
.sol-card h3{font-size:20px;}
.sol-card p{color:var(--muted);font-size:14.8px;line-height:1.85;margin-bottom:18px;}
.sol-media{
  border-radius:16px;overflow:hidden;margin-bottom:18px;border:1px solid var(--line);
  aspect-ratio:16/9;position:relative;background:var(--bg-2);
}
.sol-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.sol-card:hover .sol-media img{transform:scale(1.04);}
.sol-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,31,.1),rgba(7,17,31,.55));}
.sol-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.sol-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:12.5px;color:var(--muted);background:rgba(255,255,255,.045);
  border:1px solid var(--line);border-radius:999px;padding:3px 11px;
}

/* ============ 数据 ============ */
.stats-wrap{
  background:linear-gradient(120deg,rgba(11,31,51,.9),rgba(8,20,36,.72));
  border:1px solid var(--line);border-radius:26px;padding:44px 36px;
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
}
.stat-col{padding:8px 12px;}
.stat-item{text-align:left;padding:12px 6px;border-left:2px solid rgba(82,225,255,.2);padding-left:20px;}
.stat-num{
  font-size:42px;font-weight:800;line-height:1.1;letter-spacing:.5px;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-num .unit{font-size:20px;font-weight:700;}
.stat-item.warm .stat-num{background:linear-gradient(120deg,var(--accent),#FFB86B);-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat-label{font-size:14.5px;color:var(--muted);margin-top:6px;}

/* ============ 资讯列表 ============ */
.news-list{display:flex;flex-direction:column;gap:18px;}
.news-item{
  display:grid;grid-template-columns:280px 1fr;gap:24px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;transition:all var(--t);backdrop-filter:blur(12px);align-items:center;
}
.news-item:hover{border-color:var(--line-strong);transform:translateX(5px);box-shadow:var(--shadow-soft);}
.news-thumb{
  position:relative;border-radius:15px;overflow:hidden;aspect-ratio:16/10;display:block;background:var(--bg-2);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.news-item:hover .news-thumb img{transform:scale(1.05);}
.news-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,31,.05),rgba(7,17,31,.5));}
.news-body{display:flex;flex-direction:column;gap:10px;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--muted);}
.news-meta .cat{color:var(--primary);background:rgba(45,226,197,.09);border:1px solid rgba(45,226,197,.2);border-radius:999px;padding:2px 11px;}
.news-meta i{font-size:12px;margin-right:5px;}
.news-title{font-size:19px;line-height:1.55;font-weight:650;}
.news-title a{color:var(--text);}
.news-title a:hover{color:var(--primary);}
.news-summary{color:var(--muted);font-size:14.5px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-empty{
  text-align:center;padding:64px 24px;border:1px dashed var(--line);
  border-radius:var(--radius);background:rgba(12,32,54,.36);
}
.news-empty i{font-size:30px;color:var(--muted);margin-bottom:14px;display:block;}
.news-empty p{color:var(--muted);font-size:15px;}
.news-more{margin-top:34px;display:flex;justify-content:center;}

/* ============ CTA 条 ============ */
.cta-band{
  background:linear-gradient(120deg,rgba(45,226,197,.12),rgba(77,124,254,.14) 55%,rgba(139,92,246,.12));
  border:1px solid var(--line-strong);border-radius:26px;
  padding:46px 48px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;box-shadow:var(--shadow);
}
.cta-band h2{font-size:28px;line-height:1.4;margin-bottom:10px;}
.cta-band p{color:var(--muted);font-size:15.5px;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item.open{border-color:var(--line-strong);box-shadow:var(--shadow-soft);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:17px;font-weight:650;line-height:1.6;
}
.faq-q:hover{color:var(--primary);}
.faq-q i{color:var(--primary);font-size:14px;transition:transform var(--t);flex-shrink:0;}
.faq-item.open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s cubic-bezier(.4,0,.2,1);}
.faq-a-inner{padding:0 24px 22px;color:var(--muted);font-size:15px;line-height:1.9;border-top:1px dashed rgba(82,225,255,.13);padding-top:16px;margin:0 0 0;}

/* ============ 弹层 ============ */
.modal-mask{
  position:fixed;inset:0;background:rgba(3,9,17,.76);backdrop-filter:blur(4px);
  z-index:120;display:flex;align-items:center;justify-content:center;padding:20px;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.modal-mask.open{opacity:1;visibility:visible;}
.modal{
  width:100%;max-width:540px;max-height:88vh;overflow-y:auto;
  background:var(--glass-strong);border:1px solid var(--line-strong);
  border-radius:24px;padding:30px;box-shadow:var(--shadow);
  transform:translateY(16px) scale(.98);transition:transform .3s cubic-bezier(.4,0,.2,1);
}
.modal-mask.open .modal{transform:translateY(0) scale(1);}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:8px;}
.modal-head h3{font-size:22px;}
.modal-head p{color:var(--muted);font-size:14px;margin-top:8px;}
.modal-close{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted);cursor:pointer;transition:all var(--t);
}
.modal-close:hover{color:var(--danger);border-color:rgba(255,92,122,.5);}
.form-field{margin-top:16px;}
.form-field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:8px;}
.form-field label .req{color:var(--danger);margin-left:3px;}
.form-field input,.form-field select,.form-field textarea{
  width:100%;margin:0;border-radius:12px;padding:12px 14px;font-size:14.5px;
  background:rgba(255,255,255,.045);border:1px solid var(--line);color:var(--text);
  transition:border-color var(--t),box-shadow var(--t);
}
.form-field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(45,226,197,.14);
}
.form-field select option{background:var(--bg-2);color:var(--text);}
.form-field.error input,.form-field.error select,.form-field.error textarea{border-color:var(--danger);}
.form-err{color:var(--danger);font-size:12.5px;margin-top:6px;display:none;}
.form-field.error .form-err{display:block;}
.check-line{display:flex;align-items:flex-start;gap:10px;margin-top:18px;font-size:13.5px;color:var(--muted);line-height:1.7;}
.check-line input{width:16px;height:16px;margin:4px 0 0;flex-shrink:0;accent-color:var(--primary);}
.check-line a{color:var(--primary);}
.modal-submit{width:100%;margin-top:20px;}
.privacy-fold{margin-top:16px;border-top:1px dashed rgba(82,225,255,.14);padding-top:14px;}
.privacy-toggle{
  background:transparent;border:0;color:var(--muted);font-size:13px;cursor:pointer;
  display:flex;align-items:center;gap:7px;padding:0;
}
.privacy-toggle:hover{color:var(--primary);}
.privacy-toggle i{font-size:11px;transition:transform var(--t);}
.privacy-fold.open .privacy-toggle i{transform:rotate(180deg);}
.privacy-body{max-height:0;overflow:hidden;transition:max-height .3s ease;font-size:12.5px;color:var(--muted);line-height:1.8;}
.privacy-fold.open .privacy-body{max-height:280px;}
.privacy-body p{padding-top:10px;}
.form-success{display:none;text-align:center;padding:26px 10px;}
.form-success i{font-size:38px;color:var(--primary);margin-bottom:14px;display:block;}
.form-success h4{font-size:19px;margin-bottom:8px;}
.form-success p{color:var(--muted);font-size:14.5px;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(7,17,31,.4),rgba(6,14,25,.95));
  padding:72px 0 0;margin-top:20px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--muted);font-size:14.5px;line-height:1.9;max-width:340px;}
.footer-title{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--text);}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:var(--muted);font-size:14.5px;}
.footer-links a:hover{color:var(--primary);padding-left:4px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:var(--muted);font-size:14.5px;margin-bottom:13px;line-height:1.7;}
.footer-contact i{color:var(--primary);font-size:13px;margin-top:7px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;
  align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{color:var(--muted);font-size:13px;line-height:1.8;}
.footer-bottom .policy{display:flex;gap:20px;}
.footer-bottom .policy a{color:var(--muted);font-size:13px;}
.footer-bottom .policy a:hover{color:var(--primary);}
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;z-index:80;cursor:pointer;
  background:var(--glass-strong);border:1px solid var(--line-strong);color:var(--primary);
  opacity:0;visibility:hidden;transform:translateY(12px);transition:all var(--t);
  backdrop-filter:blur(12px);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{box-shadow:var(--glow);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .nav-search{width:220px;}
  .hero h1{font-size:44px;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-search{display:none;}
  .menu-toggle{display:grid;}
  .nav-right{gap:8px;}
  .hero{padding:76px 0 68px;}
  .hero-inner{grid-template-columns:1fr;gap:42px;}
  .hero h1{font-size:38px;}
  .hero-sub{font-size:17px;}
  .pain-grid{grid-template-columns:repeat(2,1fr);}
  .solution-layout{grid-template-columns:1fr;gap:34px;}
  .solution-side{position:static;}
  .sol-card.offset,.sol-card.wide.offset{transform:none;}
  .sol-card.offset:hover,.sol-card.wide.offset:hover{transform:translateY(-5px);}
  .section{padding:76px 0;}
  .section-title{font-size:29px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .nav-inner{padding:0 18px;height:64px;}
  .brand{font-size:16px;}
  .brand-mark{width:32px;height:32px;font-size:15px;}
  .hero h1{font-size:31px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{flex:1;min-width:140px;}
  .pain-grid{grid-template-columns:1fr;}
  .solution-cards{grid-template-columns:1fr;}
  .sol-card.wide{grid-column:span 1;}
  .stats-wrap{padding:32px 22px;}
  .stat-num{font-size:34px;}
  .news-item{grid-template-columns:1fr;gap:16px;}
  .news-thumb{aspect-ratio:16/9;}
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .faq-q{font-size:15.5px;padding:17px 18px;}
  .faq-a-inner{padding:0 18px 18px;padding-top:14px;}
  .modal{padding:24px 20px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:38px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .hero{padding:60px 0 56px;}
  .hero h1{font-size:27px;}
  .section{padding:58px 0;}
  .section-title{font-size:24px;}
  .section-desc{font-size:15px;}
  .sol-card{padding:22px;}
  .pain-card{padding:22px 20px;}
  .stat-num{font-size:30px;}
  .panel-cta{flex-direction:column;}
  .to-top{right:16px;bottom:18px;}
}

/* roulang page: article */
/* ===================== 设计变量 ===================== */
:root{
  --bg:#07111F;
  --bg-2:#0B1F33;
  --glass:rgba(12,32,54,.58);
  --panel:rgba(10,26,44,.86);
  --primary:#2DE2C5;
  --primary-2:#4D7CFE;
  --accent:#FF7A45;
  --accent-2:#8B5CF6;
  --text:#EAF4FF;
  --muted:#9FB3C8;
  --line:rgba(82,225,255,.16);
  --line-strong:rgba(82,225,255,.42);
  --danger:#FF5C7A;
  --radius:20px;
  --radius-sm:12px;
  --shadow:0 18px 50px rgba(0,0,0,.38);
  --shadow-glow:0 14px 36px rgba(45,226,197,.26);
  --max:1240px;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  overflow-x:hidden;
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.78;
  background:
    radial-gradient(880px 520px at 12% -10%, rgba(77,124,254,.16), transparent 62%),
    radial-gradient(760px 460px at 94% 2%, rgba(45,226,197,.12), transparent 60%),
    linear-gradient(180deg,#07111F 0%,#081624 44%,#07111F 100%);
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(82,225,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(82,225,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 76%);
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 76%);
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.24;letter-spacing:.2px}
p{margin:0}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(45,226,197,.32);color:#04121C}
.site-header,.site-main,.site-footer{position:relative;z-index:1}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.row{max-width:none;margin-left:-12px;margin-right:-12px}
.row .columns{padding-left:12px;padding-right:12px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#04121C;padding:10px 16px;border-radius:0 0 12px 0;z-index:99}
.skip-link:focus{left:0}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.3px;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,#2DE2C5 0%,#4D7CFE 100%);
  color:#04141F;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 42px rgba(45,226,197,.38);filter:brightness(1.06)}
.btn-ghost{background:rgba(12,32,54,.5);border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:rgba(45,226,197,.12);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn:active{transform:translateY(0);filter:brightness(.94)}

/* ===================== 导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,17,31,.72);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:22px;height:70px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#2DE2C5,#4D7CFE);
  color:#04141F;font-weight:800;font-size:19px;letter-spacing:0;
  box-shadow:0 0 0 1px rgba(45,226,197,.35),0 10px 24px rgba(45,226,197,.22);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap}
.brand-text span{color:var(--muted);font-weight:500;margin-left:3px;font-size:15px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-links a{
  padding:9px 13px;border-radius:10px;font-size:14.5px;color:var(--muted);
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;white-space:nowrap;
}
.nav-links a:hover{color:var(--text);background:rgba(45,226,197,.08)}
.nav-links a.active{color:var(--text);background:rgba(45,226,197,.13);box-shadow:inset 0 0 0 1px var(--line)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-search{
  display:flex;align-items:center;gap:9px;width:280px;height:42px;padding:0 12px;
  border-radius:12px;background:rgba(12,32,54,.62);border:1px solid var(--line);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.nav-search:focus-within{border-color:rgba(45,226,197,.62);box-shadow:0 0 0 3px rgba(45,226,197,.14)}
.nav-search i{color:var(--muted);font-size:14px}
.nav-search input{flex:1;min-width:0;background:none;border:0;outline:none;color:var(--text);font-size:14px}
.nav-search input::placeholder{color:#7D93AA}
.nav-search kbd{
  font-family:inherit;font-size:11px;color:var(--muted);
  border:1px solid var(--line);border-radius:6px;padding:2px 6px;background:rgba(255,255,255,.03);
}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  color:var(--muted);background:rgba(12,32,54,.5);border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.icon-btn:hover{color:var(--text);border-color:rgba(45,226,197,.48);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;place-items:center;
  background:rgba(12,32,54,.6);border:1px solid var(--line);color:var(--text);font-size:17px;
}
.drawer{position:fixed;inset:0;z-index:90;background:rgba(3,10,19,.66);display:none}
.drawer.open{display:block}
.drawer-panel{
  position:absolute;top:0;right:0;width:86%;max-width:340px;height:100%;
  background:rgba(10,26,44,.96);border-left:1px solid var(--line);
  padding:22px;display:flex;flex-direction:column;gap:18px;
  box-shadow:-20px 0 60px rgba(0,0,0,.5);
}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-title{font-size:15px;color:var(--muted);letter-spacing:1px}
.drawer-close{width:38px;height:38px;border-radius:10px;background:rgba(12,32,54,.7);border:1px solid var(--line);color:var(--text)}
.drawer-search{display:flex;align-items:center;gap:9px;height:46px;padding:0 14px;border-radius:12px;background:rgba(12,32,54,.7);border:1px solid var(--line)}
.drawer-search input{flex:1;min-width:0;background:none;border:0;outline:none;color:var(--text);font-size:14.5px}
.drawer-links{display:flex;flex-direction:column;gap:6px}
.drawer-links a{padding:13px 14px;border-radius:12px;color:var(--muted);font-size:15px;min-height:44px;display:flex;align-items:center}
.drawer-links a:hover,.drawer-links a.active{color:var(--text);background:rgba(45,226,197,.12)}
.no-scroll{overflow:hidden}

/* ===================== 面包屑 ===================== */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);padding:20px 0 0}
.crumb a{color:var(--muted);transition:color .2s}
.crumb a:hover{color:var(--primary)}
.crumb i{font-size:10px;opacity:.7}
.crumb .current{color:var(--text);max-width:min(560px,70vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===================== 文章头部 ===================== */
.article-hero{
  position:relative;
  padding:26px 0 52px;
  background-image:linear-gradient(180deg,rgba(7,17,31,.88),rgba(7,17,31,.96)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  color:#9BF3E2;background:rgba(45,226,197,.1);border:1px solid var(--line-strong);
}
.hero-badge i{font-size:11px}
.article-title{
  font-size:clamp(28px,3.4vw,46px);
  font-weight:800;line-height:1.22;margin:20px 0 0;max-width:960px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;font-size:14px;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center;gap:8px}
.article-meta i{color:var(--primary);font-size:13px}
.hero-divider{height:1px;background:linear-gradient(90deg,var(--line-strong),transparent);margin-top:28px}

/* ===================== 通用板块 ===================== */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:38px}
.section-eyebrow{font-size:13px;letter-spacing:2px;color:var(--primary);text-transform:uppercase;margin-bottom:10px;display:block}
.section-title{font-size:clamp(24px,2.6vw,34px);font-weight:700}
.section-desc{color:var(--muted);font-size:15px;max-width:640px;margin-top:12px}

/* ===================== 文章主体 ===================== */
.article-wrap{padding:64px 0 80px}
.article-main{max-width:860px}
.article-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:clamp(24px,3vw,46px);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.article-content{font-size:17px;line-height:1.95;color:#DCE9F7}
.article-content p{margin:0 0 1.1em}
.article-content h2{
  font-size:clamp(21px,2.2vw,26px);margin:44px 0 16px;padding-left:14px;
  border-left:3px solid var(--primary);line-height:1.4;
}
.article-content h3{font-size:20px;margin:32px 0 12px;color:#F2FAFF}
.article-content strong{color:#FFFFFF}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:#8BFFE9}
.article-content ul,.article-content ol{padding-left:24px;margin:0 0 1.2em}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin-bottom:8px}
.article-content img{border-radius:16px;margin:26px 0;border:1px solid var(--line)}
.article-content figure{margin:26px 0}
.article-content figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-content blockquote{
  margin:26px 0;padding:18px 24px;border-radius:0 14px 14px 0;
  border-left:3px solid var(--accent);background:rgba(12,32,54,.55);color:#C8DCF0;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content hr{border:0;height:1px;background:var(--line);margin:38px 0}
.article-content code{
  background:rgba(45,226,197,.1);color:#9BF3E2;padding:2px 7px;border-radius:6px;font-size:14px;
}
.article-content pre{
  background:rgba(3,12,22,.9);border:1px solid var(--line);border-radius:14px;
  padding:18px;overflow:auto;margin:24px 0;font-size:14px;line-height:1.7;
}
.article-content pre code{background:none;padding:0;color:#BFE9DF}
.article-content table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px}
.article-content th,.article-content td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-content th{background:rgba(45,226,197,.08);color:#EAF4FF;font-weight:600}

.empty-state{
  text-align:center;padding:60px 20px;
  display:flex;flex-direction:column;align-items:center;gap:16px;
}
.empty-state i{font-size:38px;color:var(--primary)}
.empty-state h2{font-size:22px}
.empty-state p{color:var(--muted);max-width:460px;font-size:15px}

/* ===================== 侧栏 ===================== */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{
  background:var(--glass);border:1px solid var(--line);border-radius:18px;
  padding:22px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:0 12px 34px rgba(0,0,0,.26);
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:9px}
.side-card h3 i{color:var(--primary);font-size:14px}
.side-list{display:flex;flex-direction:column;gap:4px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--muted);
  transition:background .2s ease,color .2s ease,padding-left .2s ease;
}
.side-list a:hover{background:rgba(45,226,197,.1);color:var(--text);padding-left:16px}
.side-list a i{font-size:11px;opacity:.7}
.side-cta{
  background:linear-gradient(150deg,rgba(45,226,197,.16),rgba(77,124,254,.14));
  border:1px solid var(--line-strong);
}
.side-cta p{font-size:14px;color:#C9DCEE;margin:10px 0 16px}

/* ===================== 相关推荐 ===================== */
.rp-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rp-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);transition:transform .26s ease,border-color .26s ease;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.rp-card:hover{transform:translateY(-6px);border-color:var(--line-strong)}
.rp-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.rp-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.rp-card:hover .rp-thumb img{transform:scale(1.06)}
.rp-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,31,.1),rgba(7,17,31,.72))}
.rp-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rp-tag{
  align-self:flex-start;font-size:12px;padding:3px 10px;border-radius:999px;
  color:#9BF3E2;background:rgba(45,226,197,.1);border:1px solid var(--line);
}
.rp-body h3{font-size:18px;line-height:1.45}
.rp-body p{font-size:14.5px;color:var(--muted);flex:1}
.rp-more{font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:7px}
.rp-more i{transition:transform .22s ease}
.rp-card:hover .rp-more i{transform:translateX(4px)}

/* ===================== CTA 条 ===================== */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  padding:clamp(30px,4vw,52px);
  background-image:linear-gradient(120deg,rgba(9,24,42,.94),rgba(11,31,51,.86)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);max-width:640px}
.cta-band p{color:var(--muted);margin-top:12px;max-width:620px;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ===================== 页脚 ===================== */
.site-footer{
  margin-top:20px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(7,17,31,.4),rgba(4,10,18,.92));
  padding:66px 0 30px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:38px}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:18px;max-width:330px;line-height:1.8}
.footer-title{font-size:15px;margin-bottom:18px;color:#F2FAFF;letter-spacing:.5px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--muted);font-size:14px;transition:color .2s ease,padding-left .2s ease}
.footer-links a:hover{color:var(--primary);padding-left:5px}
.footer-contact{display:flex;flex-direction:column;gap:13px}
.footer-contact li{display:flex;gap:10px;color:var(--muted);font-size:14px;line-height:1.7}
.footer-contact i{color:var(--primary);margin-top:4px;font-size:13px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.footer-bottom p{color:#7D93AA;font-size:13px}
.policy{display:flex;flex-wrap:wrap;gap:18px}
.policy a{color:#7D93AA;font-size:13px;transition:color .2s}
.policy a:hover{color:var(--primary)}

/* ===================== 返回顶部 ===================== */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:70;
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(12,32,54,.86);border:1px solid var(--line-strong);color:var(--text);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(45,226,197,.2)}

/* ===================== 响应式 ===================== */
@media screen and (max-width:1200px){
  .nav-search{width:220px}
  .nav-links a{padding:9px 10px;font-size:14px}
}
@media screen and (max-width:1024px){
  .nav-links,.nav-search,.nav-actions .icon-btn{display:none}
  .nav-toggle{display:grid;margin-left:auto}
  .article-side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .rp-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:72px 0}
}
@media screen and (max-width:768px){
  .container{padding:0 18px}
  .article-hero{padding:18px 0 40px}
  .article-meta{gap:10px 16px;font-size:13.5px}
  .article-wrap{padding:44px 0 56px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .rp-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:520px){
  .brand-text{font-size:15px}
  .brand-text span{font-size:13px}
  .article-title{font-size:26px}
  .article-card{padding:22px 18px}
  .article-content{font-size:16px}
  .btn{padding:11px 20px;font-size:14.5px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .to-top{right:14px;bottom:18px}
}

/* roulang page: category1 */
:root{
    --bg:#07111F;
    --bg-2:#0B1F33;
    --glass:rgba(12,32,54,.58);
    --glass-strong:rgba(10,26,44,.86);
    --primary:#2DE2C5;
    --primary-2:#4D7CFE;
    --accent:#FF7A45;
    --accent-2:#8B5CF6;
    --text:#EAF4FF;
    --muted:#9FB3C8;
    --line:rgba(82,225,255,.16);
    --line-soft:rgba(82,225,255,.08);
    --danger:#FF5C7A;
    --radius-lg:24px;
    --radius:18px;
    --radius-sm:12px;
    --shadow:0 18px 50px rgba(0,0,0,.38);
    --shadow-soft:0 10px 30px rgba(0,0,0,.26);
    --container:1240px;
    --gap:28px;
    --t:.28s cubic-bezier(.4,0,.2,1);
  }

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

  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--text);
    background:var(--bg);
    background-image:
      radial-gradient(900px 520px at 12% -8%, rgba(77,124,254,.20), transparent 62%),
      radial-gradient(760px 460px at 92% 4%, rgba(45,226,197,.14), transparent 60%),
      linear-gradient(180deg,#07111F 0%,#081726 46%,#07111F 100%);
    background-attachment:fixed;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }

  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:
      linear-gradient(rgba(82,225,255,.045) 1px,transparent 1px),
      linear-gradient(90deg,rgba(82,225,255,.045) 1px,transparent 1px);
    background-size:64px 64px;
    mask-image:radial-gradient(circle at 50% 12%,rgba(0,0,0,.7),transparent 78%);
    -webkit-mask-image:radial-gradient(circle at 50% 12%,rgba(0,0,0,.7),transparent 78%);
  }

  img{max-width:100%;height:auto;display:block;border:0;}
  a{color:var(--primary);text-decoration:none;transition:color var(--t),opacity var(--t);}
  a:hover{color:#7ff3de;}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 24px;
    position:relative;
    z-index:1;
  }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:120;
    background:rgba(7,17,31,.72);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 0 rgba(45,226,197,.10),0 14px 40px rgba(0,0,0,.34);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:24px;
    min-height:68px;
    padding:10px 24px;
    max-width:var(--container);
    margin:0 auto;
    width:100%;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    color:var(--text);
    font-weight:700;
    letter-spacing:.4px;
    white-space:nowrap;
    flex-shrink:0;
  }
  .brand:hover{color:var(--text);}
  .brand-mark{
    width:36px;height:36px;
    display:grid;place-items:center;
    border-radius:12px;
    font-size:18px;
    font-weight:800;
    color:#04141c;
    background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
    box-shadow:0 8px 22px rgba(45,226,197,.32);
    flex-shrink:0;
  }
  .brand-text{font-size:17px;line-height:1.2;}
  .brand-text span{color:var(--primary);font-weight:600;margin-left:2px;}

  .nav-links{
    display:flex;
    align-items:center;
    gap:4px;
    margin-left:8px;
    flex-wrap:nowrap;
  }
  .nav-links a{
    display:inline-block;
    padding:9px 14px;
    border-radius:999px;
    font-size:14.5px;
    color:var(--muted);
    white-space:nowrap;
    transition:color var(--t),background var(--t),box-shadow var(--t);
  }
  .nav-links a:hover{
    color:var(--text);
    background:rgba(45,226,197,.08);
  }
  .nav-links a.active{
    color:#04141c;
    font-weight:600;
    background:linear-gradient(135deg,rgba(45,226,197,.92),rgba(77,124,254,.92));
    box-shadow:0 10px 26px rgba(45,226,197,.26);
  }

  .header-actions{
    display:flex;
    align-items:center;
    gap:12px;
    margin-left:auto;
  }
  .command-search{
    display:flex;
    align-items:center;
    gap:10px;
    width:288px;
    height:42px;
    padding:0 12px;
    border-radius:var(--radius-sm);
    background:rgba(9,24,40,.78);
    border:1px solid var(--line);
    transition:border-color var(--t),box-shadow var(--t),background var(--t);
  }
  .command-search i{color:var(--muted);font-size:13px;}
  .command-search input{
    flex:1;
    min-width:0;
    background:transparent;
    border:0;
    color:var(--text);
    font-size:14px;
    outline:none;
  }
  .command-search input::placeholder{color:rgba(159,179,200,.7);}
  .command-search kbd{
    font-family:inherit;
    font-size:11px;
    color:var(--muted);
    padding:2px 7px;
    border-radius:7px;
    background:rgba(82,225,255,.08);
    border:1px solid var(--line);
    white-space:nowrap;
  }
  .command-search:focus-within{
    border-color:rgba(45,226,197,.6);
    box-shadow:0 0 0 3px rgba(45,226,197,.14);
  }
  .icon-btn{
    width:40px;height:40px;
    display:grid;place-items:center;
    border-radius:var(--radius-sm);
    background:rgba(9,24,40,.7);
    border:1px solid var(--line);
    color:var(--muted);
    cursor:pointer;
    transition:all var(--t);
  }
  .icon-btn:hover{
    color:var(--text);
    border-color:rgba(45,226,197,.45);
    background:rgba(45,226,197,.1);
  }
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:12px 26px;
    border-radius:999px;
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    white-space:nowrap;
    transition:transform var(--t),box-shadow var(--t),filter var(--t),background var(--t),border-color var(--t),color var(--t);
  }
  .btn-primary{
    color:#04141c;
    background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
    box-shadow:0 12px 30px rgba(45,226,197,.30);
  }
  .btn-primary:hover{
    color:#04141c;
    transform:translateY(-2px);
    filter:brightness(1.08);
    box-shadow:0 18px 40px rgba(45,226,197,.42);
  }
  .btn-primary:active{transform:translateY(0);filter:brightness(.94);}
  .btn-ghost{
    color:var(--text);
    background:rgba(12,32,54,.5);
    border-color:var(--line);
    -webkit-backdrop-filter:blur(10px);
    backdrop-filter:blur(10px);
  }
  .btn-ghost:hover{
    color:var(--text);
    background:rgba(45,226,197,.10);
    border-color:rgba(45,226,197,.5);
    transform:translateY(-2px);
  }
  .btn-sm{padding:10px 20px;font-size:14px;}
  .btn-lg{padding:15px 34px;font-size:16px;}

  .nav-toggle{
    display:none;
    width:44px;height:44px;
    place-items:center;
    border-radius:var(--radius-sm);
    background:rgba(9,24,40,.7);
    border:1px solid var(--line);
    color:var(--text);
    cursor:pointer;
    font-size:17px;
  }

  .mobile-drawer{
    display:none;
    background:var(--glass-strong);
    border-bottom:1px solid var(--line);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    padding:18px 24px 26px;
  }
  .mobile-drawer.open{display:block;}
  .mobile-drawer .command-search{width:100%;margin-bottom:16px;}
  .mobile-drawer nav{display:grid;gap:6px;margin-bottom:18px;}
  .mobile-drawer nav a{
    padding:13px 16px;
    border-radius:var(--radius-sm);
    color:var(--muted);
    font-size:15px;
    background:rgba(9,24,40,.5);
    border:1px solid var(--line-soft);
    min-height:44px;
    display:flex;
    align-items:center;
  }
  .mobile-drawer nav a.active{
    color:#04141c;
    font-weight:600;
    background:linear-gradient(135deg,rgba(45,226,197,.92),rgba(77,124,254,.92));
  }
  .mobile-drawer .btn{width:100%;}

  /* ---------- 面包屑 ---------- */
  .crumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:9px;
    font-size:13.5px;
    color:var(--muted);
    padding:26px 0 6px;
  }
  .crumb a{color:var(--muted);}
  .crumb a:hover{color:var(--primary);}
  .crumb i{font-size:9px;opacity:.7;}

  /* ---------- 板块通用 ---------- */
  .section{padding:96px 0;position:relative;}
  .section-sm{padding:64px 0;}
  .section-head{max-width:760px;margin-bottom:52px;}
  .section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:12.5px;
    letter-spacing:2px;
    color:var(--primary);
    padding:6px 14px;
    border-radius:999px;
    border:1px solid var(--line);
    background:rgba(45,226,197,.07);
    margin-bottom:18px;
  }
  .section-title{
    font-size:clamp(26px,3.4vw,38px);
    font-weight:700;
    line-height:1.28;
    letter-spacing:.3px;
    margin-bottom:16px;
  }
  .section-desc{color:var(--muted);font-size:16.5px;max-width:720px;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    padding:64px 0 92px;
    overflow:hidden;
  }
  .hero-bg{
    position:absolute;
    inset:0;
    background-image:linear-gradient(100deg,rgba(7,17,31,.94) 0%,rgba(7,17,31,.78) 48%,rgba(7,17,31,.9) 100%),url("/assets/images/backpic/back-2.png");
    background-size:cover;
    background-position:center;
    z-index:0;
  }
  .hero-bg::after{
    content:"";
    position:absolute;
    inset:0;
    background:radial-gradient(620px 320px at 78% 22%,rgba(45,226,197,.16),transparent 68%);
  }
  .hero-grid{
    display:grid;
    grid-template-columns:1.05fr .95fr;
    gap:56px;
    align-items:center;
    position:relative;
    z-index:1;
  }
  .hero h1{
    font-size:clamp(30px,4.4vw,52px);
    font-weight:800;
    line-height:1.2;
    letter-spacing:.2px;
    margin-bottom:20px;
  }
  .hero h1 em{
    font-style:normal;
    background:linear-gradient(120deg,var(--primary),var(--primary-2) 62%,var(--accent-2));
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .hero-sub{
    font-size:17.5px;
    color:#C6D8EA;
    max-width:600px;
    margin-bottom:28px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
  .tag{
    font-size:13px;
    color:var(--muted);
    padding:6px 14px;
    border-radius:999px;
    border:1px solid var(--line);
    background:rgba(12,32,54,.5);
  }

  .hero-panel{
    border-radius:var(--radius-lg);
    background:var(--glass);
    border:1px solid var(--line);
    box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    padding:24px;
  }
  .hero-panel-top{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding-bottom:16px;
    border-bottom:1px solid var(--line-soft);
    margin-bottom:16px;
  }
  .hero-panel-top strong{font-size:15.5px;font-weight:650;}
  .status-dot{
    display:inline-flex;
    align-items:center;
    gap:7px;
    font-size:12.5px;
    color:var(--primary);
  }
  .status-dot::before{
    content:"";
    width:8px;height:8px;
    border-radius:50%;
    background:var(--primary);
    box-shadow:0 0 12px var(--primary);
    animation:pulse 2.2s infinite;
  }
  @keyframes pulse{
    0%,100%{opacity:1;transform:scale(1);}
    50%{opacity:.5;transform:scale(.82);}
  }
  .func-list{display:grid;gap:10px;}
  .func-row{
    display:flex;
    align-items:center;
    gap:12px;
    padding:12px 14px;
    border-radius:14px;
    background:rgba(8,22,38,.66);
    border:1px solid var(--line-soft);
    transition:border-color var(--t),transform var(--t),background var(--t);
  }
  .func-row:hover{
    border-color:rgba(45,226,197,.42);
    background:rgba(45,226,197,.07);
    transform:translateX(4px);
  }
  .func-icon{
    width:34px;height:34px;
    border-radius:11px;
    display:grid;place-items:center;
    font-size:14px;
    color:var(--primary);
    background:rgba(45,226,197,.12);
    border:1px solid var(--line);
    flex-shrink:0;
  }
  .func-row span.name{font-size:14.5px;flex:1;}
  .badge{
    font-size:11.5px;
    padding:3px 10px;
    border-radius:999px;
    border:1px solid var(--line);
    color:var(--muted);
    white-space:nowrap;
  }
  .badge.on{color:var(--primary);border-color:rgba(45,226,197,.45);background:rgba(45,226,197,.1);}
  .badge.plan{color:var(--accent);border-color:rgba(255,122,69,.42);background:rgba(255,122,69,.1);}

  /* ---------- 指标条 ---------- */
  .stats-strip{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
  }
  .stat-card{
    padding:28px 24px;
    border-radius:var(--radius);
    background:var(--glass);
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft),inset 0 1px 0 rgba(255,255,255,.05);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    transition:transform var(--t),border-color var(--t);
  }
  .stat-card:hover{transform:translateY(-6px);border-color:rgba(45,226,197,.42);}
  .stat-num{
    font-size:clamp(30px,3.6vw,44px);
    font-weight:800;
    line-height:1.1;
    letter-spacing:-.5px;
    background:linear-gradient(120deg,var(--primary),var(--primary-2));
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
    margin-bottom:8px;
  }
  .stat-label{font-size:14px;color:var(--muted);}

  /* ---------- 功能模块：左粘性 + 右交错 ---------- */
  .modules-layout{
    display:grid;
    grid-template-columns:.82fr 1.18fr;
    gap:56px;
    align-items:start;
  }
  .modules-sticky{position:sticky;top:110px;}
  .modules-sticky .section-title{font-size:clamp(24px,3vw,34px);}
  .modules-sticky p{color:var(--muted);margin-bottom:22px;font-size:16px;}
  .modules-columns{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:24px;
  }
  .module-card{
    border-radius:var(--radius);
    background:var(--glass);
    border:1px solid var(--line);
    overflow:hidden;
    box-shadow:var(--shadow-soft);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    transition:transform var(--t),border-color var(--t),box-shadow var(--t);
    display:flex;
    flex-direction:column;
  }
  .module-card:nth-child(even){transform:translateY(28px);}
  .module-card:nth-child(even):hover{transform:translateY(20px);}
  .module-card:hover{border-color:rgba(45,226,197,.45);box-shadow:0 22px 54px rgba(0,0,0,.44);}
  .module-cover{
    position:relative;
    aspect-ratio:16/9;
    overflow:hidden;
    background:#0A1A2B;
  }
  .module-cover img{
    width:100%;height:100%;
    object-fit:cover;
    transition:transform .5s ease;
  }
  .module-card:hover .module-cover img{transform:scale(1.05);}
  .module-cover::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,rgba(7,17,31,.18) 0%,rgba(7,17,31,.82) 100%);
  }
  .module-body{padding:24px 24px 26px;}
  .module-head{
    display:flex;
    align-items:center;
    gap:12px;
    margin-bottom:12px;
  }
  .module-head i{
    width:38px;height:38px;
    border-radius:12px;
    display:grid;place-items:center;
    font-size:15px;
    color:var(--primary);
    background:rgba(45,226,197,.1);
    border:1px solid var(--line);
    flex-shrink:0;
  }
  .module-head h3{font-size:19px;font-weight:650;line-height:1.4;}
  .module-body p{color:var(--muted);font-size:14.8px;margin-bottom:14px;}
  .text-link{
    display:inline-flex;
    align-items:center;
    gap:7px;
    font-size:14px;
    font-weight:600;
    color:var(--accent);
  }
  .text-link i{transition:transform var(--t);font-size:12px;}
  .text-link:hover{color:#ffa47c;}
  .text-link:hover i{transform:translateX(5px);}

  /* ---------- 接入流程 ---------- */
  .steps{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:22px;
    position:relative;
  }
  .step{
    padding:28px 24px;
    border-radius:var(--radius);
    background:linear-gradient(180deg,rgba(12,32,54,.66),rgba(9,22,38,.5));
    border:1px solid var(--line);
    position:relative;
    transition:transform var(--t),border-color var(--t);
  }
  .step:hover{transform:translateY(-6px);border-color:rgba(77,124,254,.45);}
  .step-num{
    font-size:13px;
    font-weight:700;
    letter-spacing:2px;
    color:var(--primary-2);
    margin-bottom:14px;
    display:block;
  }
  .step h3{font-size:18px;font-weight:650;margin-bottom:10px;}
  .step p{font-size:14.5px;color:var(--muted);}

  /* ---------- 场景卡 ---------- */
  .scene-grid{
    display:grid;
    grid-template-columns:1.25fr .75fr .75fr;
    gap:22px;
  }
  .scene-card{
    border-radius:var(--radius-lg);
    border:1px solid var(--line);
    background:var(--glass);
    overflow:hidden;
    display:flex;
    flex-direction:column;
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    box-shadow:var(--shadow-soft);
    transition:transform var(--t),border-color var(--t);
  }
  .scene-card:hover{transform:translateY(-6px);border-color:rgba(45,226,197,.42);}
  .scene-card.feature{background:linear-gradient(150deg,rgba(45,226,197,.12),rgba(12,32,54,.7) 58%);}
  .scene-body{padding:28px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .scene-body h3{font-size:20px;font-weight:650;}
  .scene-body p{font-size:14.8px;color:var(--muted);}
  .scene-list{display:grid;gap:9px;margin-top:4px;}
  .scene-list li{
    display:flex;
    gap:10px;
    font-size:14.5px;
    color:#C6D8EA;
    align-items:flex-start;
  }
  .scene-list i{color:var(--primary);font-size:12px;margin-top:7px;flex-shrink:0;}
  .scene-media{aspect-ratio:16/10;overflow:hidden;position:relative;background:#0A1A2B;}
  .scene-media img{width:100%;height:100%;object-fit:cover;}
  .scene-media::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(7,17,31,.1),rgba(7,17,31,.7));
  }

  /* ---------- FAQ ---------- */
  .faq-wrap{
    max-width:900px;
    margin:0 auto;
    display:grid;
    gap:14px;
  }
  .faq-item{
    border-radius:var(--radius);
    border:1px solid var(--line);
    background:var(--glass);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    overflow:hidden;
    transition:border-color var(--t),background var(--t);
  }
  .faq-item:hover{border-color:rgba(45,226,197,.4);}
  .faq-item.open{background:rgba(12,32,54,.78);border-color:rgba(45,226,197,.45);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:20px 24px;
    background:transparent;
    border:0;
    cursor:pointer;
    text-align:left;
    color:var(--text);
    font-size:16.5px;
    font-weight:650;
    line-height:1.6;
  }
  .faq-q i{
    color:var(--primary);
    font-size:14px;
    transition:transform var(--t);
    flex-shrink:0;
  }
  .faq-item.open .faq-q i{transform:rotate(180deg);}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .36s ease;
  }
  .faq-a p{
    padding:0 24px 22px;
    color:var(--muted);
    font-size:15px;
    border-top:1px solid var(--line-soft);
    padding-top:18px;
    margin-top:2px;
  }

  /* ---------- CTA 条 ---------- */
  .cta-band{
    border-radius:var(--radius-lg);
    padding:48px;
    background:
      radial-gradient(520px 240px at 88% 12%,rgba(139,92,246,.28),transparent 66%),
      linear-gradient(120deg,rgba(45,226,197,.14),rgba(12,32,54,.78) 58%);
    border:1px solid rgba(45,226,197,.28);
    box-shadow:var(--shadow);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    flex-wrap:wrap;
  }
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:10px;}
  .cta-band p{color:#C6D8EA;font-size:15.5px;max-width:560px;}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

  /* ---------- 相关分类 ---------- */
  .rel-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:22px;
  }
  .rel-card{
    display:flex;
    flex-direction:column;
    gap:12px;
    padding:26px;
    border-radius:var(--radius);
    background:rgba(12,32,54,.5);
    border:1px solid var(--line);
    color:var(--text);
    transition:transform var(--t),border-color var(--t),background var(--t);
  }
  .rel-card:hover{
    color:var(--text);
    transform:translateY(-5px);
    border-color:rgba(77,124,254,.5);
    background:rgba(20,44,72,.6);
  }
  .rel-card i{font-size:18px;color:var(--primary-2);}
  .rel-card strong{font-size:17px;font-weight:650;}
  .rel-card span{font-size:14px;color:var(--muted);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:40px;
    padding:72px 0 30px;
    background:linear-gradient(180deg,rgba(8,20,34,.4),rgba(5,13,24,.94));
    border-top:1px solid var(--line);
    position:relative;
    z-index:1;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:44px;
    border-bottom:1px solid var(--line-soft);
  }
  .footer-brand p{
    color:var(--muted);
    font-size:14.5px;
    margin-top:18px;
    max-width:340px;
  }
  .footer-title{
    font-size:15px;
    font-weight:650;
    color:var(--text);
    margin-bottom:18px;
    letter-spacing:.6px;
  }
  .footer-links{display:grid;gap:11px;}
  .footer-links a{color:var(--muted);font-size:14.5px;}
  .footer-links a:hover{color:var(--primary);}
  .footer-contact{display:grid;gap:13px;}
  .footer-contact li{
    display:flex;
    gap:11px;
    font-size:14.5px;
    color:var(--muted);
    align-items:flex-start;
  }
  .footer-contact i{color:var(--primary);font-size:14px;margin-top:5px;flex-shrink:0;}
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    flex-wrap:wrap;
    padding-top:24px;
    font-size:13.5px;
    color:var(--muted);
  }
  .footer-bottom .policy{display:flex;gap:20px;flex-wrap:wrap;}
  .footer-bottom .policy a{color:var(--muted);}
  .footer-bottom .policy a:hover{color:var(--primary);}
  .to-top{
    position:fixed;
    right:24px;
    bottom:28px;
    width:46px;height:46px;
    border-radius:14px;
    display:grid;
    place-items:center;
    color:var(--text);
    background:var(--glass-strong);
    border:1px solid var(--line);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    box-shadow:var(--shadow-soft);
    cursor:pointer;
    opacity:0;
    pointer-events:none;
    transition:opacity var(--t),transform var(--t);
    z-index:100;
  }
  .to-top.show{opacity:1;pointer-events:auto;}
  .to-top:hover{transform:translateY(-4px);border-color:rgba(45,226,197,.5);color:var(--primary);}

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .nav-links{display:none;}
    .nav-toggle{display:grid;}
    .header-actions .command-search{display:none;}
    .hero-grid{grid-template-columns:1fr;gap:40px;}
    .hero{padding:44px 0 72px;}
    .modules-layout{grid-template-columns:1fr;gap:36px;}
    .modules-sticky{position:static;}
    .steps{grid-template-columns:repeat(2,1fr);}
    .scene-grid{grid-template-columns:1fr 1fr;}
    .scene-card.feature{grid-column:1 / -1;}
    .stats-strip{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .rel-grid{grid-template-columns:1fr;max-width:520px;}
    .section{padding:76px 0;}
  }
  @media (max-width:768px){
    .container,.header-inner{padding-left:18px;padding-right:18px;}
    .modules-columns{grid-template-columns:1fr;}
    .module-card:nth-child(even){transform:none;}
    .module-card:nth-child(even):hover{transform:translateY(-6px);}
    .cta-band{padding:34px 24px;}
    .hero-panel{padding:20px;}
    .section-head{margin-bottom:38px;}
  }
  @media (max-width:640px){
    body{font-size:15.5px;line-height:1.78;}
    .brand-text{font-size:15.5px;}
    .header-actions .icon-btn{display:none;}
    .stats-strip{grid-template-columns:1fr;}
    .steps{grid-template-columns:1fr;}
    .scene-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .hero-actions .btn{width:100%;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
    .section{padding:58px 0;}
    .to-top{right:16px;bottom:18px;}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  }

/* roulang page: category2 */
:root{
  --bg:#07111F;
  --bg-2:#0B1F33;
  --bg-3:#0E2740;
  --glass:rgba(12,32,54,0.58);
  --glass-strong:rgba(10,26,44,0.86);
  --primary:#2DE2C5;
  --primary-2:#4D7CFE;
  --accent:#FF7A45;
  --accent-2:#8B5CF6;
  --text:#EAF4FF;
  --muted:#9FB3C8;
  --line:rgba(82,225,255,0.16);
  --line-strong:rgba(82,225,255,0.34);
  --danger:#FF5C7A;
  --radius-s:12px;
  --radius-m:18px;
  --radius-l:24px;
  --radius-pill:999px;
  --shadow:0 18px 50px rgba(0,0,0,0.38);
  --shadow-soft:0 10px 30px rgba(2,10,20,0.32);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:72px;
  --space-7:104px;
  --maxw:1240px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(45,226,197,0.16), transparent 62%),
    radial-gradient(760px 460px at 88% 4%, rgba(77,124,254,0.18), transparent 60%),
    linear-gradient(180deg,#07111F 0%,#081624 46%,#07111F 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:hover{color:#7CF3DE;}
h1,h2,h3,h4{margin:0 0 var(--space-2);line-height:1.25;font-weight:750;letter-spacing:.2px;}
h1{font-size:clamp(28px,4vw,54px);font-weight:800;}
h2{font-size:clamp(24px,2.8vw,38px);}
h3{font-size:clamp(19px,1.7vw,24px);font-weight:700;}
h4{font-size:17px;font-weight:700;}
p{margin:0 0 var(--space-2);color:var(--muted);}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(45,226,197,0.28);}

/* Foundation 覆盖 */
.row{max-width:100%;margin-left:0;margin-right:0;}
.column,.columns{padding-left:0;padding-right:0;float:none;}
.button,button.button{background:none;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:var(--space-6) 0;position:relative;}
.section-tight{padding:var(--space-5) 0;}
.section-head{max-width:760px;margin-bottom:var(--space-4);}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--primary);font-weight:700;
  padding:6px 14px;border:1px solid var(--line);border-radius:var(--radius-pill);
  background:rgba(45,226,197,0.06);margin-bottom:16px;
}
.lead{font-size:18px;color:#C6D8EA;max-width:720px;}
.muted{color:var(--muted);font-size:14.5px;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,17,31,0.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(45,226,197,0.08),0 14px 34px rgba(2,8,18,0.42);
}
.nav-bar{
  display:flex;align-items:center;gap:22px;
  min-height:70px;padding:10px 0;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-weight:800;font-size:19px;color:#04141C;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
  box-shadow:0 8px 24px rgba(45,226,197,0.32);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.4px;white-space:nowrap;}
.brand-text span{color:var(--muted);font-weight:600;font-size:13px;margin-left:6px;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-links a{
  color:#B9CCDF;font-size:15px;font-weight:600;
  padding:9px 14px;border-radius:var(--radius-s);
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.nav-links a:hover{color:var(--text);background:rgba(45,226,197,0.08);border-color:var(--line);}
.nav-links a.active{
  color:var(--primary);background:rgba(45,226,197,0.12);
  border-color:var(--line-strong);box-shadow:inset 0 0 18px rgba(45,226,197,0.12);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.command-search{
  display:flex;align-items:center;gap:10px;
  width:280px;height:42px;padding:0 12px;
  border-radius:var(--radius-s);
  background:rgba(9,22,38,0.86);
  border:1px solid var(--line);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.command-search:focus-within{border-color:var(--line-strong);box-shadow:0 0 0 3px rgba(45,226,197,0.14);}
.command-search i{color:var(--muted);font-size:13px;}
.command-search input{
  flex:1;background:none;border:0;outline:none;color:var(--text);font-size:14.5px;
}
.command-search input::placeholder{color:#6E849A;}
.command-search kbd{
  font-family:var(--font);font-size:11px;color:#8FA6BC;
  border:1px solid var(--line);border-radius:6px;padding:2px 7px;background:rgba(12,32,54,0.7);
}
.icon-btn{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(12,32,54,0.6);color:#B9CCDF;
  transition:all .22s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(45,226,197,0.1);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-s);border:1px solid transparent;
  font-weight:700;font-size:15.5px;line-height:1.2;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#04141C;
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-2) 100%);
  box-shadow:0 12px 32px rgba(45,226,197,0.3),0 0 0 1px rgba(45,226,197,0.24) inset;
}
.btn-primary:hover{transform:translateY(-2px);color:#04141C;box-shadow:0 18px 42px rgba(45,226,197,0.42);}
.btn-ghost{
  color:var(--text);background:rgba(12,32,54,0.6);border-color:var(--line);
}
.btn-ghost:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(45,226,197,0.1);transform:translateY(-2px);}
.btn-accent{
  color:#210C04;background:linear-gradient(120deg,var(--accent) 0%,#FFB27A 100%);
  box-shadow:0 12px 30px rgba(255,122,69,0.28);
}
.btn-accent:hover{transform:translateY(-2px);color:#210C04;}
.btn-sm{padding:9px 18px;font-size:14.5px;border-radius:11px;}
.btn-pill{border-radius:var(--radius-pill);}
.nav-cta{margin-left:2px;padding:11px 22px;border-radius:var(--radius-pill);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:rgba(12,32,54,0.7);color:var(--text);align-items:center;justify-content:center;}
.nav-toggle:hover{color:var(--primary);}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;inset:70px 0 auto 0;z-index:79;
  background:var(--glass-strong);backdrop-filter:blur(20px);
  border-bottom:1px solid var(--line);
  padding:18px 24px 26px;display:none;
  box-shadow:0 24px 50px rgba(2,8,18,0.6);
}
.nav-drawer.open{display:block;animation:drawerIn .24s ease both;}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}
.nav-drawer .drawer-links{display:grid;gap:8px;margin-bottom:16px;}
.nav-drawer .drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 16px;border-radius:var(--radius-s);
  border:1px solid var(--line);background:rgba(12,32,54,0.55);
  color:#C6D8EA;font-weight:600;
}
.nav-drawer .drawer-links a.active{color:var(--primary);border-color:var(--line-strong);background:rgba(45,226,197,0.12);}
.nav-drawer .command-search{width:100%;margin-bottom:14px;}
.nav-drawer .btn{width:100%;}

/* 面包屑 */
.breadcrumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:14px;color:var(--muted);margin-bottom:22px;}
.breadcrumb a{color:#A9C0D6;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#4E6680;}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  padding:68px 0 72px;
  background-image:linear-gradient(115deg,rgba(5,14,26,0.94) 0%,rgba(7,20,36,0.86) 46%,rgba(8,24,42,0.72) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(82,225,255,0.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(82,225,255,0.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,0.7),transparent 88%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;}
.hero h1{margin-bottom:18px;}
.hero h1 .h1-sub{display:block;font-size:15px;font-weight:700;letter-spacing:.24em;color:var(--primary);margin-bottom:14px;text-transform:uppercase;}
.hero h1 .h1-accent{
  background:linear-gradient(120deg,var(--primary) 0%,#7FC8FF 55%,var(--accent-2) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lead{margin-bottom:26px;max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:#B9CCDF;
  padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(12,32,54,0.6);
}
.tag i{color:var(--primary);font-size:12px;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:var(--radius-l);overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;filter:saturate(1.05);}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,14,26,0.1) 0%,rgba(5,14,26,0.78) 100%);
}
.hero-card{
  position:absolute;left:-20px;bottom:-26px;width:min(300px,88%);
  padding:20px 22px;border-radius:var(--radius-m);
  background:var(--glass);backdrop-filter:blur(16px);
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.hero-card .num{font-size:34px;font-weight:800;color:var(--primary);line-height:1.1;letter-spacing:.5px;}
.hero-card p{margin:6px 0 0;font-size:13.5px;line-height:1.7;}

/* 指标条 */
.metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
}
.metric{
  padding:24px;border-radius:var(--radius-m);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-soft);backdrop-filter:blur(12px);
  transition:border-color .24s ease,transform .24s ease;
}
.metric:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.metric .value{font-size:40px;font-weight:800;line-height:1.05;color:var(--primary);letter-spacing:.5px;}
.metric .value small{font-size:16px;font-weight:700;margin-left:4px;color:#8FE9DA;}
.metric .label{margin-top:8px;font-size:14px;color:var(--muted);}

/* 标签切换 */
.tab-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tab-btn{
  padding:11px 22px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(12,32,54,0.55);
  color:#B9CCDF;font-weight:650;font-size:15px;transition:all .22s ease;
}
.tab-btn:hover{color:var(--primary);border-color:var(--line-strong);}
.tab-btn.active{
  color:#04141C;background:linear-gradient(120deg,var(--primary),var(--primary-2));
  border-color:transparent;box-shadow:0 10px 26px rgba(45,226,197,0.26);
}
.tab-panel{display:none;}
.tab-panel.active{display:block;animation:panelIn .3s ease both;}
@keyframes panelIn{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:translateY(0);}}
.h-list{display:grid;gap:18px;}
.h-card{
  display:grid;grid-template-columns:96px 1fr auto;gap:22px;align-items:center;
  padding:24px 26px;border-radius:var(--radius-m);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-soft);backdrop-filter:blur(12px);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.h-card:hover{border-color:var(--line-strong);transform:translateX(4px);box-shadow:0 16px 40px rgba(2,10,20,0.5);}
.h-icon{
  width:64px;height:64px;border-radius:18px;display:grid;place-items:center;
  font-size:24px;color:var(--primary);
  background:linear-gradient(140deg,rgba(45,226,197,0.18),rgba(77,124,254,0.18));
  border:1px solid var(--line-strong);
}
.h-card h3{margin-bottom:6px;font-size:20px;}
.h-card p{margin:0;font-size:15px;line-height:1.75;}
.h-card .h-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.h-card .h-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.h-card .h-side .mini{font-size:13px;color:#8FA6BC;white-space:nowrap;}

/* 方案矩阵 */
.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.plan-card{
  position:relative;display:flex;flex-direction:column;
  padding:0 0 26px;border-radius:var(--radius-l);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow);backdrop-filter:blur(12px);
  transition:border-color .26s ease,transform .26s ease;
}
.plan-card:hover{border-color:var(--line-strong);transform:translateY(-5px);}
.plan-card.featured{border-color:rgba(255,122,69,0.42);}
.plan-card.featured::before{
  content:"使用最广";position:absolute;right:16px;top:16px;z-index:3;
  font-size:12px;font-weight:700;color:#2A0F04;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:linear-gradient(120deg,var(--accent),#FFC08F);
}
.plan-cover{position:relative;height:150px;overflow:hidden;}
.plan-cover img{width:100%;height:100%;object-fit:cover;}
.plan-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,31,0.18) 0%,rgba(7,17,31,0.92) 100%);}
.plan-body{padding:22px 26px 0;}
.plan-name{font-size:21px;font-weight:750;margin-bottom:4px;}
.plan-for{font-size:14px;color:var(--muted);margin-bottom:16px;}
.plan-list{display:grid;gap:10px;margin-bottom:20px;}
.plan-list li{display:flex;gap:10px;font-size:15px;color:#C6D8EA;line-height:1.7;}
.plan-list li i{color:var(--primary);font-size:12px;margin-top:7px;flex:0 0 auto;}
.plan-foot{margin-top:auto;padding:18px 26px 0;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;}
.plan-foot .price{font-size:15px;font-weight:700;color:var(--accent);}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;position:relative;}
.flow-step{
  padding:26px 22px;border-radius:var(--radius-m);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
}
.flow-step .step-no{
  display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;
  font-weight:800;color:#04141C;margin-bottom:14px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 10px 24px rgba(45,226,197,0.24);
}
.flow-step h3{font-size:18px;margin-bottom:8px;}
.flow-step p{font-size:14.5px;margin:0;line-height:1.72;}

/* 清单 + 面板 */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start;}
.check-list{display:grid;gap:14px;}
.check-list li{
  display:flex;gap:14px;padding:18px 20px;border-radius:var(--radius-m);
  background:rgba(12,32,54,0.5);border:1px solid var(--line);
  transition:border-color .24s ease,background .24s ease;
}
.check-list li:hover{border-color:var(--line-strong);background:rgba(14,39,64,0.7);}
.check-list i{color:var(--primary);font-size:16px;margin-top:5px;}
.check-list strong{display:block;font-size:16.5px;margin-bottom:4px;color:var(--text);}
.check-list span{font-size:14.5px;color:var(--muted);line-height:1.72;}
.panel{
  padding:30px;border-radius:var(--radius-l);
  background:var(--glass-strong);border:1px solid var(--line-strong);
  box-shadow:var(--shadow);backdrop-filter:blur(14px);
}
.panel h3{margin-bottom:14px;}
.panel .stat-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0;}
.panel .stat{padding:16px;border-radius:var(--radius-m);background:rgba(9,22,38,0.7);border:1px solid var(--line);}
.panel .stat b{display:block;font-size:26px;color:var(--primary);font-weight:800;line-height:1.1;}
.panel .stat span{font-size:13.5px;color:var(--muted);}

/* FAQ */
.faq{display:grid;gap:14px;}
.faq details{
  border-radius:var(--radius-m);border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(12px);
  padding:0 24px;transition:border-color .24s ease,background .24s ease;
}
.faq details[open]{border-color:var(--line-strong);background:rgba(12,32,54,0.72);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:17px;font-weight:700;color:var(--text);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;
  color:var(--primary);transition:transform .26s ease;flex:0 0 auto;
}
.faq details[open] summary::after{transform:rotate(180deg);}
.faq .answer{padding:0 0 22px;font-size:15.5px;color:var(--muted);line-height:1.85;max-width:900px;}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-l);border:1px solid var(--line-strong);
  padding:52px 46px;
  background-image:linear-gradient(110deg,rgba(6,16,30,0.94) 0%,rgba(9,26,46,0.86) 52%,rgba(12,32,54,0.78) 100%),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,226,197,0.26),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr auto;gap:32px;align-items:center;}
.cta-inner h2{margin-bottom:10px;}
.cta-inner p{margin:0;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 相关分类 */
.related{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-card{
  display:flex;flex-direction:column;gap:10px;
  padding:26px;border-radius:var(--radius-m);
  background:var(--glass);border:1px solid var(--line);
  transition:border-color .24s ease,transform .24s ease;
}
.rel-card:hover{border-color:var(--line-strong);transform:translateY(-4px);}
.rel-card .rel-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;color:var(--primary);font-size:18px;background:rgba(45,226,197,0.12);border:1px solid var(--line-strong);}
.rel-card h3{font-size:18px;margin:0;}
.rel-card p{font-size:14.5px;margin:0;}
.rel-card .more{font-size:14.5px;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:6px;}
.rel-card .more:hover{gap:10px;}

/* 页脚 */
.site-footer{
  margin-top:var(--space-6);padding:64px 0 28px;
  background:linear-gradient(180deg,rgba(7,17,31,0.2),rgba(6,14,26,0.95));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand p{font-size:14.5px;line-height:1.8;margin-top:16px;max-width:360px;}
.footer-title{font-size:15px;font-weight:750;color:var(--text);margin-bottom:16px;letter-spacing:.4px;}
.footer-links{display:grid;gap:11px;}
.footer-links a{color:var(--muted);font-size:14.5px;}
.footer-links a:hover{color:var(--primary);}
.footer-contact{display:grid;gap:12px;}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);line-height:1.7;}
.footer-contact i{color:var(--primary);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.footer-bottom p{margin:0;font-size:13.5px;color:#7E93A8;}
.footer-bottom .policy{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom .policy a{font-size:13.5px;color:#8FA6BC;}
.footer-bottom .policy a:hover{color:var(--primary);}

/* 返回顶部 */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:70;
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  border:1px solid var(--line-strong);background:var(--glass-strong);color:var(--primary);
  opacity:0;pointer-events:none;transition:opacity .26s ease,transform .26s ease;
  backdrop-filter:blur(12px);
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-3px);}

/* 响应式 */
@media screen and (max-width:1024px){
  .nav-links{display:none;}
  .command-search{width:200px;}
  .hero-inner{grid-template-columns:1fr;gap:56px;}
  .hero-visual{max-width:560px;}
  .hero-card{left:0;}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  .matrix{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:1fr;gap:28px;}
  .related{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-inner{grid-template-columns:1fr;gap:24px;}
}
@media screen and (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .container{padding:0 18px;}
  .command-search{display:none;}
  .nav-actions .icon-btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .hero{padding:44px 0 56px;}
  .hero-card{position:relative;left:0;bottom:0;width:100%;margin-top:-40px;}
  .hero-figure img{aspect-ratio:16/11;}
  .metrics{grid-template-columns:1fr 1fr;}
  .metric .value{font-size:32px;}
  .matrix{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .related{grid-template-columns:1fr;}
  .h-card{grid-template-columns:1fr;gap:16px;}
  .h-card .h-side{align-items:flex-start;}
  .cta-band{padding:34px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .panel .stat-row{grid-template-columns:1fr;}
}
@media screen and (max-width:520px){
  .metrics{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .btn{padding:12px 20px;}
  .breadcrumb{font-size:13px;}
  .brand-text{font-size:15.5px;}
  .brand-text span{display:block;margin:2px 0 0;font-size:12px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --bg:#07111F;
  --bg-2:#0B1F33;
  --panel:rgba(12,32,54,.58);
  --panel-strong:rgba(10,26,44,.86);
  --primary:#2DE2C5;
  --primary-2:#4D7CFE;
  --accent:#FF7A45;
  --accent-2:#8B5CF6;
  --text:#EAF4FF;
  --muted:#9FB3C8;
  --line:rgba(82,225,255,.16);
  --line-strong:rgba(82,225,255,.34);
  --danger:#FF5C7A;
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow:0 18px 50px rgba(0,0,0,.38);
  --maxw:1240px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle at 14% 10%, rgba(77,124,254,.18), transparent 46%),
    radial-gradient(circle at 86% 4%, rgba(45,226,197,.13), transparent 44%),
    linear-gradient(rgba(82,225,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(82,225,255,.045) 1px, transparent 1px);
  background-size:auto,auto,68px 68px,68px 68px;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:#7ff3e2;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;line-height:1.28;font-weight:700;color:var(--text);}
p{margin:0;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
.section{padding:92px 0;position:relative;z-index:1;}
.section-tight{padding:64px 0;position:relative;z-index:1;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,17,31,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--text);
  text-decoration:none;
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;
  border-radius:11px;
  display:grid;place-items:center;
  font-size:17px;font-weight:800;
  color:#04121f;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 0 20px rgba(45,226,197,.45);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap;}
.brand-text span{font-size:12px;font-weight:500;color:var(--muted);margin-left:3px;letter-spacing:0;}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:9px 13px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--muted);
  white-space:nowrap;
  transition:background .22s ease,color .22s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(45,226,197,.08);}
.nav-links a.active{
  color:var(--text);
  background:rgba(45,226,197,.13);
  box-shadow:inset 0 0 0 1px var(--line-strong);
}

.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:272px;height:42px;
  padding:0 12px;
  border-radius:12px;
  background:rgba(12,32,54,.7);
  border:1px solid var(--line);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(45,226,197,.15);}
.cmd-search i{color:var(--muted);font-size:13px;}
.cmd-search input{
  flex:1;min-width:0;
  background:none;border:0;outline:none;
  color:var(--text);font-size:14px;
}
.cmd-search input::placeholder{color:#6c8299;}
.cmd-search kbd{
  font-size:11px;line-height:1;
  padding:4px 6px;border-radius:6px;
  color:var(--muted);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  border:1px solid var(--line);
  background:rgba(12,32,54,.6);
  color:var(--muted);
  cursor:pointer;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.icon-btn:hover{color:var(--text);background:rgba(45,226,197,.12);border-color:var(--line-strong);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;
  border-radius:12px;
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  text-decoration:none;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,filter .2s ease,color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#04121f;
  box-shadow:0 10px 28px rgba(45,226,197,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(45,226,197,.42);filter:brightness(1.06);color:#04121f;}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  background:rgba(12,32,54,.55);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{background:rgba(45,226,197,.12);transform:translateY(-2px);color:var(--text);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

.nav-toggle{display:none;}

.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--panel-strong);
  padding:18px 0 24px;
}
.drawer.open{display:block;}
.drawer nav{display:flex;flex-direction:column;gap:4px;}
.drawer nav a{
  display:flex;align-items:center;
  min-height:46px;
  padding:10px 14px;
  border-radius:12px;
  color:var(--muted);
  font-size:15px;
  border:1px solid transparent;
}
.drawer nav a.active{color:var(--text);background:rgba(45,226,197,.12);border-color:var(--line-strong);}
.drawer-search{display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;margin-bottom:14px;border-radius:12px;border:1px solid var(--line);background:rgba(12,32,54,.7);}
.drawer-search input{flex:1;min-width:0;background:none;border:0;outline:none;color:var(--text);font-size:15px;}
.drawer-search i{color:var(--muted);}
.drawer-cta{margin-top:16px;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:56px 0 78px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.page-hero .hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(7,17,31,.86) 0%,rgba(7,17,31,.94) 100%),
    radial-gradient(circle at 80% 22%, rgba(77,124,254,.30), transparent 56%);
}
.page-hero .container{position:relative;z-index:2;}

.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13.5px;
  color:var(--muted);
  margin-bottom:26px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb i{font-size:10px;opacity:.6;}

.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;
  border-radius:999px;
  font-size:13px;
  color:var(--primary);
  border:1px solid var(--line-strong);
  background:rgba(45,226,197,.08);
  margin-bottom:20px;
}
.hero-tag i{font-size:11px;}

.page-hero h1{
  font-size:clamp(28px,4.4vw,50px);
  font-weight:800;
  letter-spacing:-.4px;
  line-height:1.2;
  max-width:16em;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--primary),var(--primary-2) 70%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin-top:20px;
  max-width:44em;
  font-size:17px;
  color:#C7D8EA;
}

.hero-search{
  display:flex;align-items:center;gap:12px;
  max-width:660px;
  margin-top:34px;
  padding:8px 8px 8px 20px;
  border-radius:999px;
  background:var(--panel-strong);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.hero-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(45,226,197,.14),var(--shadow);}
.hero-search i{color:var(--muted);font-size:15px;}
.hero-search input{
  flex:1;min-width:0;
  background:none;border:0;outline:none;
  color:var(--text);font-size:15.5px;
  padding:8px 0;
}
.hero-search input::placeholder{color:#6c8299;}

.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-tags .tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--muted);
  background:rgba(12,32,54,.6);
  border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.hero-tags .tag:hover{color:var(--text);border-color:var(--line-strong);background:rgba(45,226,197,.1);}

/* ---------- section head ---------- */
.sec-head{max-width:760px;margin-bottom:46px;}
.sec-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1px;
  color:var(--primary);
  margin-bottom:14px;
}
.sec-label::before{
  content:"";
  width:26px;height:1px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.sec-head h2{font-size:clamp(24px,3vw,36px);letter-spacing:-.3px;}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15.5px;}

.glass{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}

/* ---------- help grid ---------- */
.help-grid{margin-top:-16px;}
.help-grid .column{margin-top:16px;}
.help-card{
  height:100%;
  padding:28px 26px;
  display:flex;flex-direction:column;
  transition:border-color .28s ease,transform .28s ease,box-shadow .28s ease;
}
.help-card:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:0 24px 56px rgba(0,0,0,.46);}
.help-icon{
  width:48px;height:48px;
  border-radius:14px;
  display:grid;place-items:center;
  font-size:18px;
  color:var(--primary);
  background:rgba(45,226,197,.1);
  border:1px solid var(--line-strong);
  margin-bottom:18px;
}
.help-card h3{font-size:20px;margin-bottom:10px;}
.help-card p{color:var(--muted);font-size:14.5px;flex:1;}
.text-link{
  display:inline-flex;align-items:center;gap:7px;
  margin-top:18px;
  font-size:14px;font-weight:600;
  color:var(--accent);
}
.text-link i{font-size:11px;transition:transform .24s ease;}
.text-link:hover{color:#ff9a6f;}
.text-link:hover i{transform:translateX(4px);}

/* ---------- metrics ---------- */
.metric-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--line);
}
.metric{
  padding:32px 26px;
  background:rgba(9,23,40,.86);
  transition:background .28s ease;
}
.metric:hover{background:rgba(14,38,62,.9);}
.metric .num{
  font-size:clamp(30px,3.6vw,44px);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-1px;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.metric .num small{font-size:.44em;font-weight:700;margin-left:2px;letter-spacing:0;}
.metric .label{margin-top:12px;font-size:14px;color:var(--muted);}
.metric .hint{margin-top:6px;font-size:12.5px;color:#6f8499;}

/* ---------- flow steps ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:step;
}
.flow-item{
  position:relative;
  padding:30px 24px 26px;
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(12,32,54,.66),rgba(9,23,40,.72));
  border:1px solid var(--line);
  transition:border-color .28s ease,transform .28s ease;
}
.flow-item:hover{border-color:var(--line-strong);transform:translateY(-4px);}
.flow-item .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;
  border-radius:12px;
  font-size:15px;font-weight:800;
  color:#04121f;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  margin-bottom:18px;
}
.flow-item h3{font-size:18px;margin-bottom:9px;}
.flow-item p{font-size:14px;color:var(--muted);}
.flow-item::after{
  content:"";
  position:absolute;top:49px;right:-13px;
  width:14px;height:1px;
  background:linear-gradient(90deg,var(--line-strong),transparent);
}
.flow-item:last-child::after{display:none;}

/* ---------- safety split ---------- */
.split{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.split-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:16/11;
}
.split-figure img{width:100%;height:100%;object-fit:cover;}
.split-figure::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(7,17,31,.10) 0%,rgba(7,17,31,.78) 100%);
}
.split-figure figcaption{
  position:absolute;left:22px;right:22px;bottom:20px;
  z-index:2;
  font-size:13px;
  color:#C7D8EA;
  display:flex;align-items:center;gap:9px;
}
.split-figure figcaption i{color:var(--primary);}

.check-list{margin-top:26px;display:grid;gap:14px;}
.check-list li{
  display:flex;gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:#CBDDEC;
}
.check-list li i{
  margin-top:6px;
  font-size:12px;
  color:var(--primary);
  flex-shrink:0;
}
.check-list li strong{color:var(--text);font-weight:600;}

/* ---------- topic list ---------- */
.topic-list{
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  overflow:hidden;
  background:rgba(9,23,40,.6);
}
.topic-row{
  display:flex;align-items:center;gap:20px;
  padding:22px 26px;
  border-bottom:1px solid var(--line);
  transition:background .24s ease,padding-left .24s ease;
}
.topic-row:last-child{border-bottom:0;}
.topic-row:hover{background:rgba(45,226,197,.06);padding-left:30px;}
.topic-row .topic-title{flex:1;min-width:0;font-size:15.5px;}
.topic-row .chip{
  flex-shrink:0;
  font-size:12px;
  padding:5px 12px;
  border-radius:999px;
  color:var(--muted);
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
}
.chip-orange{color:var(--accent);border-color:rgba(255,122,69,.34);background:rgba(255,122,69,.08);}
.chip-purple{color:#C3B0FA;border-color:rgba(139,92,246,.36);background:rgba(139,92,246,.1);}
.topic-row .go{
  flex-shrink:0;
  font-size:13px;
  color:var(--muted);
  display:inline-flex;align-items:center;gap:6px;
}
.topic-row:hover .go{color:var(--primary);}

/* ---------- faq ---------- */
.faq-wrap{display:grid;gap:14px;}
.faq-item{
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:rgba(12,32,54,.55);
  overflow:hidden;
  transition:border-color .26s ease,background .26s ease;
}
.faq-item[open]{border-color:var(--line-strong);background:rgba(13,35,58,.72);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary h3{font-size:16.5px;font-weight:600;margin:0;}
.faq-item .chev{
  flex-shrink:0;
  width:28px;height:28px;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:11px;
  color:var(--primary);
  border:1px solid var(--line-strong);
  background:rgba(45,226,197,.08);
  transition:transform .28s ease;
}
.faq-item[open] .chev{transform:rotate(180deg);}
.faq-body{padding:0 24px 22px;color:var(--muted);font-size:14.5px;}
.faq-body p+p{margin-top:10px;}

/* ---------- contact CTA ---------- */
.cta-panel{
  position:relative;
  border-radius:26px;
  padding:56px 48px;
  overflow:hidden;
  border:1px solid var(--line-strong);
  background:
    radial-gradient(circle at 88% 10%, rgba(77,124,254,.28), transparent 52%),
    radial-gradient(circle at 6% 92%, rgba(45,226,197,.20), transparent 50%),
    linear-gradient(140deg, rgba(11,28,48,.96), rgba(7,17,31,.98));
  box-shadow:var(--shadow);
}
.cta-panel h2{font-size:clamp(22px,2.8vw,32px);}
.cta-panel .lead{margin-top:14px;color:#C7D8EA;max-width:42em;font-size:15.5px;}
.cta-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  margin-top:36px;
}
.cta-box{
  padding:24px 22px;
  border-radius:var(--radius-md);
  background:rgba(7,20,36,.66);
  border:1px solid var(--line);
  transition:border-color .26s ease,transform .26s ease;
}
.cta-box:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.cta-box i{font-size:18px;color:var(--primary);}
.cta-box h3{font-size:16px;margin:14px 0 8px;}
.cta-box p{font-size:13.8px;color:var(--muted);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.related-card{
  display:flex;flex-direction:column;
  padding:28px 26px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:rgba(12,32,54,.5);
  color:var(--text);
  transition:border-color .26s ease,transform .26s ease,background .26s ease;
}
.related-card:hover{color:var(--text);border-color:var(--line-strong);transform:translateY(-4px);background:rgba(14,38,62,.7);}
.related-card .rc-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.related-card .rc-ico{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  font-size:16px;color:var(--primary-2);
  background:rgba(77,124,254,.12);
  border:1px solid rgba(77,124,254,.28);
}
.related-card h3{font-size:17.5px;}
.related-card p{font-size:14px;color:var(--muted);flex:1;}
.related-card .rc-link{margin-top:18px;font-size:13.5px;color:var(--accent);display:inline-flex;align-items:center;gap:7px;}
.related-card .rc-link i{font-size:11px;transition:transform .24s ease;}
.related-card:hover .rc-link i{transform:translateX(4px);}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:20px;
  padding:70px 0 28px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(7,17,31,.5),rgba(6,14,26,.96));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--muted);font-size:14px;max-width:30em;}
.footer-title{font-size:15px;margin-bottom:18px;letter-spacing:.4px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:var(--muted);font-size:14px;}
.footer-links a:hover{color:var(--primary);}
.footer-contact{display:flex;flex-direction:column;gap:13px;}
.footer-contact li{display:flex;gap:11px;font-size:14px;color:var(--muted);align-items:flex-start;}
.footer-contact li i{margin-top:6px;color:var(--primary);font-size:13px;flex-shrink:0;}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:#7d92a8;}
.policy{display:flex;gap:20px;flex-wrap:wrap;}
.policy a{font-size:13px;color:#7d92a8;}
.policy a:hover{color:var(--primary);}

.back-top{
  position:fixed;
  right:22px;bottom:24px;
  width:46px;height:46px;
  border-radius:14px;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);
  background:var(--panel-strong);
  color:var(--primary);
  cursor:pointer;
  z-index:70;
  backdrop-filter:blur(12px);
  transition:transform .24s ease,box-shadow .24s ease,color .24s ease;
}
.back-top:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(45,226,197,.28);color:#7ff3e2;}

/* ---------- responsive ---------- */
@media screen and (max-width:1199px){
  .cmd-search{width:210px;}
  .nav-links a{padding:9px 10px;font-size:14px;}
}
@media screen and (max-width:1023px){
  .nav-links,.nav-tools .cmd-search,.nav-tools .icon-btn{display:none;}
  .nav-toggle{display:grid;}
  .nav-tools{margin-left:auto;}
  .section{padding:70px 0;}
  .section-tight{padding:52px 0;}
  .metric-strip{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);}
  .flow-item::after{display:none;}
  .split{grid-template-columns:1fr;gap:34px;}
  .cta-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media screen and (max-width:639px){
  .container{padding:0 18px;}
  .page-hero{padding:36px 0 56px;}
  .hero-sub{font-size:15.5px;}
  .hero-search{
    flex-wrap:wrap;
    border-radius:18px;
    padding:14px;
    gap:10px;
  }
  .hero-search .btn{width:100%;}
  .section{padding:56px 0;}
  .section-tight{padding:42px 0;}
  .metric-strip{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .help-card{padding:24px 20px;}
  .topic-row{padding:18px 18px;gap:12px;}
  .topic-row .chip{display:none;}
  .topic-row .go span{display:none;}
  .faq-item summary{padding:17px 18px;}
  .faq-body{padding:0 18px 18px;}
  .cta-panel{padding:34px 22px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .back-top{right:14px;bottom:16px;}
}

/* roulang page: category4 */
:root{
  --bg:#07111F;
  --bg-2:#0B1F33;
  --glass:rgba(12,32,54,.58);
  --glass-strong:rgba(10,26,44,.86);
  --primary:#2DE2C5;
  --primary-2:#4D7CFE;
  --accent:#FF7A45;
  --accent-2:#8B5CF6;
  --text:#EAF4FF;
  --muted:#9FB3C8;
  --line:rgba(82,225,255,.16);
  --line-strong:rgba(82,225,255,.34);
  --danger:#FF5C7A;
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow:0 18px 50px rgba(0,0,0,.38);
  --shadow-soft:0 10px 28px rgba(0,0,0,.26);
  --container:1220px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(82,225,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(82,225,255,.035) 1px,transparent 1px);
  background-size:72px 72px;
  opacity:.9;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
p{margin:0 0 1rem}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0 0 .6rem;font-weight:700;line-height:1.24;color:var(--text);letter-spacing:.2px}
h1{font-size:46px;font-weight:800;line-height:1.18}
h2{font-size:34px;font-weight:700}
h3{font-size:23px;font-weight:650}
h4{font-size:17px;font-weight:650}
button,input,select,textarea{font-family:inherit;font-size:16px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
main{position:relative;z-index:1}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--primary);font-weight:600;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(45,226,197,.06);
  margin-bottom:16px;
}
.section-head p{color:var(--muted);font-size:17px;margin:0}
.lead{color:var(--muted);font-size:17.5px;line-height:1.85}

/* Foundation 网格定制 */
.section .row,.page-hero .row{max-width:none;margin-left:-12px;margin-right:-12px}
.section .column,.section .columns,.page-hero .column,.page-hero .columns{padding-left:12px;padding-right:12px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(7,17,31,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,197,.55),rgba(77,124,254,.4),transparent);
  pointer-events:none;
}
.header-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  height:68px;
  display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  display:grid;place-items:center;
  font-weight:800;font-size:17px;color:#04222a;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 0 0 1px rgba(45,226,197,.5),0 8px 22px rgba(45,226,197,.24);
}
.brand-text{font-size:16.5px;font-weight:750;letter-spacing:.4px;white-space:nowrap}
.brand-text span{color:var(--primary);font-weight:600;margin-left:2px}
.brand:hover .brand-text{color:#fff}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:14px}
.nav-links a{
  display:block;
  padding:9px 14px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--muted);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(82,225,255,.08)}
.nav-links a.active{
  color:var(--text);
  background:rgba(45,226,197,.12);
  box-shadow:inset 0 0 0 1px rgba(45,226,197,.28);
}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.command-search{
  position:relative;display:flex;align-items:center;
  width:300px;height:42px;
  padding:0 12px 0 38px;
  border-radius:12px;
  background:rgba(12,32,54,.62);
  border:1px solid var(--line);
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.command-search i{position:absolute;left:13px;font-size:14px;color:var(--muted)}
.command-search input{
  width:100%;border:0;background:transparent;color:var(--text);
  font-size:14px;outline:none;
}
.command-search input::placeholder{color:rgba(159,179,200,.75)}
.command-search kbd{
  font-size:11px;color:var(--muted);
  border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;background:rgba(7,17,31,.6);white-space:nowrap;
}
.command-search:focus-within{
  border-color:rgba(45,226,197,.7);
  box-shadow:0 0 0 3px rgba(45,226,197,.14);
  background:rgba(12,32,54,.85);
}
.quick-actions{display:flex;gap:8px}
.icon-btn{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  color:var(--muted);
  background:rgba(12,32,54,.55);
  border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,transform .2s ease,background .2s ease;
}
.icon-btn:hover{color:var(--text);border-color:var(--line-strong);transform:translateY(-1px);background:rgba(12,32,54,.85)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;
  border-radius:12px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,filter .2s ease,background .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#032027;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:0 10px 28px rgba(45,226,197,.28);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 16px 36px rgba(45,226,197,.38)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{
  color:var(--text);
  background:rgba(12,32,54,.45);
  border-color:var(--line);
}
.btn-ghost:hover{background:rgba(12,32,54,.85);border-color:var(--line-strong);transform:translateY(-2px)}
.btn-cta{padding:11px 22px;border-radius:999px}
.btn-sm{padding:9px 18px;font-size:14px}
.link-more{
  display:inline-flex;align-items:center;gap:7px;
  color:var(--primary);font-size:14.5px;font-weight:600;
}
.link-more i{transition:transform .22s ease}
.link-more:hover i{transform:translateX(4px)}
.link-more:hover{text-decoration:underline;text-underline-offset:4px}

.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  background:rgba(12,32,54,.6);border:1px solid var(--line);
  color:var(--text);cursor:pointer;
}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:68px 0 0 auto;width:min(340px,88vw);
  background:var(--glass-strong);
  backdrop-filter:blur(18px);
  border-left:1px solid var(--line);
  transform:translateX(105%);
  transition:transform .32s ease;
  z-index:110;
  padding:22px;
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer .drawer-search{margin-bottom:18px}
.mobile-drawer a.drawer-link{
  display:block;padding:14px 12px;border-radius:12px;
  color:var(--muted);font-size:15.5px;border-bottom:1px solid rgba(82,225,255,.08);
}
.mobile-drawer a.drawer-link:hover,.mobile-drawer a.drawer-link.active{
  color:var(--text);background:rgba(45,226,197,.1);
}
.mobile-drawer .btn{width:100%;margin-top:20px;min-height:46px}
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(4,10,18,.6);
  opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:105;
}
.drawer-backdrop.open{opacity:1;pointer-events:auto}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:74px 0 84px;
  background-image:
    linear-gradient(180deg,rgba(7,17,31,.86),rgba(7,17,31,.96)),
    radial-gradient(1100px 460px at 82% 6%,rgba(45,226,197,.16),transparent 62%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover,cover,cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;
  width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle,rgba(139,92,246,.24),transparent 68%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;gap:9px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:10px;opacity:.7}
.breadcrumb .current{color:var(--text)}
.page-hero h1{margin-bottom:18px;max-width:14em}
.page-hero .lead{max-width:640px;color:#B9CBDE;font-size:18px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  font-size:13px;color:var(--muted);
  background:rgba(12,32,54,.6);
  border:1px solid var(--line);
}
.tag i{color:var(--primary);font-size:12px}

.hero-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:28px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
}
.hero-card h3{font-size:19px;margin-bottom:6px}
.hero-card .hint{color:var(--muted);font-size:14px;margin-bottom:20px}
.hero-metrics{display:grid;gap:16px}
.hero-metric{
  display:flex;align-items:baseline;justify-content:space-between;gap:14px;
  padding-bottom:14px;
  border-bottom:1px dashed rgba(82,225,255,.16);
}
.hero-metric:last-child{border-bottom:0;padding-bottom:0}
.hero-metric b{
  font-size:26px;font-weight:750;letter-spacing:.5px;
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-metric span{color:var(--muted);font-size:14px;text-align:right}

/* ---------- 通用卡片 ---------- */
.glass-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-soft);
  backdrop-filter:blur(12px);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.glass-card:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--shadow)}

/* 品牌介绍 */
.intro-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line)}
.intro-media img{width:100%;aspect-ratio:4/3;object-fit:cover;filter:saturate(1.05)}
.intro-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,17,31,.06),rgba(7,17,31,.72));
}
.intro-media .caption{
  position:absolute;left:20px;right:20px;bottom:18px;z-index:2;
  font-size:14px;color:#D7E7F7;
}
.intro-list{margin-top:22px;display:grid;gap:12px}
.intro-list li{display:flex;gap:12px;align-items:flex-start;color:#C5D7E8;font-size:15.5px}
.intro-list i{
  margin-top:5px;color:var(--primary);font-size:13px;
  width:20px;height:20px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(45,226,197,.12);flex-shrink:0;
}

/* 数据卡 */
.stat-card{
  padding:26px 24px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  height:100%;
  transition:border-color .25s ease,transform .25s ease;
}
.stat-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.stat-card b{
  display:block;font-size:40px;font-weight:780;line-height:1.1;letter-spacing:.5px;
  background:linear-gradient(110deg,var(--primary),var(--primary-2) 70%,var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-card .stat-label{margin-top:8px;font-size:15px;font-weight:600}
.stat-card .stat-desc{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.7}

/* 时间线 */
.timeline{position:relative;margin-top:12px;padding-left:34px}
.timeline::before{
  content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,rgba(45,226,197,.6),rgba(77,124,254,.35),transparent);
}
.timeline-item{position:relative;padding:0 0 32px 0}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-33px;top:7px;
  width:14px;height:14px;border-radius:50%;
  background:var(--bg);
  border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(45,226,197,.12);
}
.timeline-item h4{margin-bottom:6px;font-size:18px}
.timeline-item p{color:var(--muted);font-size:15px;margin:0}
.timeline-phase{
  display:inline-block;font-size:12.5px;color:var(--primary);
  letter-spacing:.08em;margin-bottom:6px;
}

/* 承诺矩阵 */
.pledge-card{
  height:100%;
  padding:26px 24px;
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(12,32,54,.72),rgba(10,26,44,.92));
  border:1px solid var(--line);
  position:relative;
  overflow:hidden;
  transition:border-color .25s ease,transform .25s ease;
}
.pledge-card::before{
  content:"";position:absolute;left:0;top:0;width:3px;height:100%;
  background:linear-gradient(180deg,var(--primary),transparent);
  opacity:.5;
  transition:opacity .25s ease;
}
.pledge-card:hover{border-color:var(--line-strong);transform:translateY(-4px)}
.pledge-card:hover::before{opacity:1}
.pledge-icon{
  width:44px;height:44px;border-radius:13px;
  display:grid;place-items:center;margin-bottom:16px;
  color:var(--primary);
  background:rgba(45,226,197,.1);
  border:1px solid rgba(45,226,197,.22);
  font-size:17px;
}
.pledge-card h3{font-size:18px;margin-bottom:8px}
.pledge-card p{color:var(--muted);font-size:14.5px;margin:0}

/* 联系区 */
.contact-panel{
  padding:34px;
  border-radius:var(--radius-lg);
  background:var(--glass-strong);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:#C6D8E9;margin-bottom:8px;font-weight:600}
.field label .req{color:var(--accent)}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(7,17,31,.62);
  border:1px solid var(--line);
  color:var(--text);
  font-size:15px;
  outline:none;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.field textarea{min-height:118px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(45,226,197,.7);
  box-shadow:0 0 0 3px rgba(45,226,197,.14);
  background:rgba(7,17,31,.86);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(159,179,200,.6)}
.field .error-text{display:none;margin-top:7px;font-size:13px;color:var(--danger)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:rgba(255,92,122,.7)}
.field.has-error .error-text{display:block}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--muted);margin:4px 0 20px}
.checkbox-row input{width:17px;height:17px;margin-top:4px;accent-color:#2DE2C5;flex-shrink:0}
.checkbox-row a{color:var(--primary)}
.checkbox-row a:hover{text-decoration:underline;text-underline-offset:3px}
.form-note{font-size:13px;color:var(--muted);margin-top:14px}
.form-result{
  display:none;margin-top:18px;padding:14px 16px;border-radius:12px;
  font-size:14.5px;border:1px solid rgba(45,226,197,.35);
  background:rgba(45,226,197,.1);color:#CFF7EF;
}
.form-result.show{display:block}

.contact-side{display:grid;gap:18px;height:100%}
.map-placeholder{
  position:relative;
  min-height:250px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(11,31,51,.72),rgba(7,17,31,.92)),
    repeating-linear-gradient(90deg,rgba(82,225,255,.09) 0 1px,transparent 1px 46px),
    repeating-linear-gradient(0deg,rgba(82,225,255,.09) 0 1px,transparent 1px 46px);
  display:grid;place-items:center;
  text-align:center;padding:28px;
  overflow:hidden;
}
.map-placeholder .pin{
  width:50px;height:50px;border-radius:50%;
  display:grid;place-items:center;margin:0 auto 14px;
  color:#032027;font-size:19px;
  background:linear-gradient(130deg,var(--primary),var(--primary-2));
  box-shadow:0 0 0 10px rgba(45,226,197,.1);
}
.map-placeholder h4{font-size:17px;margin-bottom:6px}
.map-placeholder p{color:var(--muted);font-size:14px;margin:0}
.contact-list{display:grid;gap:14px}
.contact-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--radius-md);
  background:var(--glass);border:1px solid var(--line);
}
.contact-item i{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  display:grid;place-items:center;font-size:15px;
  color:var(--primary);background:rgba(45,226,197,.1);
}
.contact-item b{display:block;font-size:15px;margin-bottom:3px}
.contact-item span{color:var(--muted);font-size:13.5px;line-height:1.65}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--glass);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-color:rgba(45,226,197,.42);background:rgba(12,32,54,.8)}
.faq-question{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;
  background:transparent;border:0;color:var(--text);
  font-size:17px;font-weight:650;text-align:left;cursor:pointer;
}
.faq-question i{
  color:var(--primary);font-size:14px;flex-shrink:0;
  transition:transform .3s ease;
}
.faq-item.is-open .faq-question i{transform:rotate(45deg)}
.faq-answer{
  max-height:0;overflow:hidden;
  transition:max-height .34s ease;
}
.faq-answer p{
  padding:0 22px 20px;margin:0;color:var(--muted);font-size:15px;line-height:1.85;
}

/* 相关分类 */
.related-card{
  display:block;height:100%;
  padding:26px 24px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease,background .25s ease;
}
.related-card:hover{border-color:var(--line-strong);transform:translateY(-4px);background:rgba(12,32,54,.8)}
.related-card .rc-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  margin-bottom:16px;font-size:16px;color:var(--accent);
  background:rgba(255,122,69,.1);border:1px solid rgba(255,122,69,.24);
}
.related-card h3{font-size:18px;margin-bottom:8px}
.related-card p{color:var(--muted);font-size:14.5px;margin:0 0 14px}

/* CTA 条 */
.cta-band{
  position:relative;
  border-radius:26px;
  padding:48px 44px;
  background:
    linear-gradient(120deg,rgba(45,226,197,.14),rgba(77,124,254,.14) 48%,rgba(139,92,246,.16)),
    var(--glass-strong);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,226,197,.26),transparent 66%);
  pointer-events:none;
}
.cta-band h2{font-size:30px;margin-bottom:12px}
.cta-band p{color:#BFD2E4;margin:0;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

/* 页脚 */
.site-footer{
  margin-top:96px;
  padding:64px 0 26px;
  background:linear-gradient(180deg,rgba(11,31,51,.5),rgba(7,17,31,.95));
  border-top:1px solid var(--line);
  position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--muted);font-size:14.5px;line-height:1.8;max-width:330px}
.footer-title{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-links{display:grid;gap:10px}
.footer-links a{color:var(--muted);font-size:14.5px}
.footer-links a:hover{color:var(--primary)}
.footer-contact{display:grid;gap:12px}
.footer-contact li{display:flex;gap:10px;color:var(--muted);font-size:14px;line-height:1.7}
.footer-contact i{color:var(--primary);margin-top:5px;font-size:13px}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(82,225,255,.12);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
}
.footer-bottom p{margin:0;color:var(--muted);font-size:13.5px}
.footer-bottom .policy{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom .policy a{color:var(--muted);font-size:13.5px}
.footer-bottom .policy a:hover{color:var(--primary)}

.to-top{
  position:fixed;right:22px;bottom:24px;z-index:100;
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  background:rgba(12,32,54,.85);border:1px solid var(--line-strong);
  color:var(--primary);cursor:pointer;
  opacity:0;pointer-events:none;
  transition:opacity .28s ease,transform .28s ease;
  backdrop-filter:blur(10px);
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px)}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .command-search{width:230px}
  h1{font-size:40px}
  h2{font-size:30px}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .command-search{display:none}
  .nav-toggle{display:grid;place-items:center}
  .header-inner{gap:14px}
  .section{padding:76px 0}
  .page-hero{padding:56px 0 66px}
  h1{font-size:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .header-inner{padding:0 18px;height:64px}
  .mobile-drawer{inset:64px 0 0 auto}
  h1{font-size:31px}
  h2{font-size:26px}
  h3{font-size:20px}
  .section{padding:60px 0}
  .page-hero{padding:46px 0 56px}
  .page-hero .lead{font-size:16.5px}
  .hero-actions .btn{width:100%}
  .contact-panel{padding:24px 20px}
  .cta-band{padding:34px 24px;border-radius:20px}
  .cta-band h2{font-size:24px}
  .stat-card b{font-size:34px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .quick-actions{display:none}
  .btn-cta{padding:10px 16px;font-size:14px}
}
@media (max-width:520px){
  h1{font-size:27px}
  h2{font-size:23px}
  .brand-text{font-size:15px}
  .hero-metric{flex-direction:column;align-items:flex-start;gap:4px}
  .hero-metric span{text-align:left}
  .faq-question{font-size:15.5px;padding:17px 18px}
  .faq-answer p{padding:0 18px 18px;font-size:14.5px}
  .section-head{margin-bottom:32px}
}