/* roulang page: index */
:root{
  --bg-deep:#070A1C;
  --bg-night:#0D1130;
  --bg-nebula:#151B45;
  --glass:rgba(21,27,69,.52);
  --glass-strong:rgba(21,27,69,.78);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#46DFC8;
  --primary-deep:#1FA893;
  --accent:#FFC46B;
  --violet:#6E5BFF;
  --danger:#FF9A8B;
  --txt-1:#EAF0FF;
  --txt-2:#A7B2D6;
  --txt-3:#6C789F;
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --r-badge:8px;
  --r-pill:999px;
  --sh-1:0 10px 30px -18px rgba(0,0,0,.75);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.85);
  --grad-line:linear-gradient(90deg,transparent,rgba(70,223,200,.55),transparent);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Barlow","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  background:var(--bg-deep);
  color:var(--txt-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.55) .7px,transparent .9px);
  background-size:68px 68px;opacity:.05;
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(680px 520px at 88% 4%,rgba(70,223,200,.08),transparent 66%),
    radial-gradient(760px 620px at 6% 62%,rgba(110,91,255,.06),transparent 68%);
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--primary)}
h1,h2,h3,h4,h5{margin:0;color:var(--txt-1);font-weight:650;line-height:1.32}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(70,223,200,.65);outline-offset:2px;border-radius:6px}
::selection{background:rgba(70,223,200,.28);color:#fff}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
@media (min-width:1440px){.shell{max-width:1360px}}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#05081a}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--primary-deep),#123f52);border-radius:999px;border:2px solid #05081a}

/* ============ Header / Nav ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:72px;display:flex;align-items:center;
  background:rgba(7,10,28,.74);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  border-bottom:1px solid var(--line);
  transition:height .22s var(--ease),background .22s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:var(--grad-line);opacity:.65;pointer-events:none;
}
.site-header.is-scrolled{height:60px;background:rgba(7,10,28,.94)}
.nav-wrap{display:flex;align-items:center;gap:20px;width:100%}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;color:var(--txt-1);text-decoration:none}
.brand:hover{color:var(--txt-1)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 34px;position:relative;
  background:radial-gradient(circle at 32% 28%,#7BF3E0,rgba(31,168,147,.35) 62%,rgba(13,17,48,.9));
  box-shadow:0 0 0 1px rgba(70,223,200,.4),0 8px 20px -10px rgba(70,223,200,.7);
}
.brand-mark::after{
  content:"";position:absolute;width:6px;height:6px;border-radius:50%;
  background:var(--accent);right:5px;bottom:5px;box-shadow:0 0 10px rgba(255,196,107,.9);
}
.brand-text strong{display:block;font-size:16px;font-weight:700;letter-spacing:.02em;line-height:1.2}
.brand-text small{display:block;font-size:11px;color:var(--txt-3);letter-spacing:.1em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--txt-2);text-decoration:none;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:3px;width:60%;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%) scaleX(0);
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--txt-1);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--txt-1);font-weight:600}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;cursor:pointer;
  border:1px solid var(--line-strong);background:rgba(21,27,69,.55);
  padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--txt-1);transition:transform .2s var(--ease)}
.nav-toggle:hover{border-color:rgba(70,223,200,.5)}

/* Drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(3,5,15,.66);opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);z-index:1100}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;width:min(86vw,360px);height:100%;z-index:1200;
  background:var(--glass-strong);backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  border-left:1px solid var(--line-strong);
  transform:translateX(102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-head strong{color:var(--txt-1);font-size:16px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);background:rgba(13,17,48,.6);color:var(--txt-1);cursor:pointer;font-size:18px;line-height:1}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:block;padding:14px 6px;font-size:17px;color:var(--txt-2);
  border-bottom:1px solid var(--line);text-decoration:none;
}
.drawer-nav a:hover{color:var(--txt-1)}
.drawer-nav a.is-active{color:var(--primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line)}
.drawer-foot p{font-size:13px;color:var(--txt-3);margin:0 0 12px}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);
  color:#04121A;
  box-shadow:0 10px 30px -10px rgba(70,223,200,.55),0 0 0 1px rgba(70,223,200,.35);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 16px 40px -12px rgba(70,223,200,.75),0 0 0 1px rgba(70,223,200,.6);color:#04121A}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--txt-1)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(70,223,200,.08);transform:translateY(-2px);color:var(--txt-1)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;text-decoration:none}
.link-arrow::after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(-45deg);transition:transform .2s var(--ease)}
.link-arrow:hover::after{transform:rotate(-45deg) translateX(3px)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}

/* ============ Hero ============ */
.hero{position:relative;display:flex;align-items:center;min-height:78vh;padding:140px 0 96px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;z-index:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.32}
.hero::before{
  content:"";position:absolute;width:760px;height:760px;right:-200px;top:-180px;z-index:1;pointer-events:none;
  background:radial-gradient(circle,rgba(70,223,200,.15),transparent 62%);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,10,28,.88) 0%,rgba(7,10,28,.68) 46%,rgba(7,10,28,.97) 100%);
}
.hero .shell{z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.18em;color:var(--primary);
  padding:6px 14px;border:1px solid rgba(70,223,200,.3);border-radius:var(--r-pill);
  background:rgba(70,223,200,.07);margin-bottom:20px;text-transform:uppercase;
}
.hero h1{font-size:clamp(2rem,4.6vw,3.4rem);font-weight:700;line-height:1.22;letter-spacing:-.01em;margin-bottom:18px}
.hero-sub{font-size:clamp(1rem,1.4vw,1.125rem);color:var(--txt-2);max-width:620px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badges li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--txt-2);
  padding:8px 14px;border:1px solid var(--line-strong);border-radius:var(--r-pill);
  background:rgba(21,27,69,.42);
}
.hero-badges .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(70,223,200,.9);flex:0 0 6px}
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
}
.glass-strong{background:var(--glass-strong)}
.hero-card{padding:26px}
.hero-card-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.hero-card-head h2{font-size:17px;font-weight:650}
.hero-card-head span{font-size:12px;color:var(--txt-3);letter-spacing:.08em}
.hero-list{margin:16px 0}
.hero-list li{display:flex;gap:12px;padding:12px 0}
.hero-list li+li{border-top:1px dashed rgba(255,255,255,.09)}
.hero-list b{display:block;font-size:15px;color:var(--txt-1);font-weight:600;margin-bottom:2px}
.hero-list span{font-size:13px;color:var(--txt-3);line-height:1.7;display:block}
.hero-list .no{
  flex:0 0 30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:13px;color:var(--accent);
  background:rgba(255,196,107,.1);border:1px solid rgba(255,196,107,.25);
}
.hero-card-foot{padding-top:6px;display:flex;justify-content:flex-end}

/* ============ Section basics ============ */
.section{padding:112px 0;position:relative}
.section-alt{background:var(--bg-night);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:38px}
.sec-head.row-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;flex-wrap:wrap}
.sec-title{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:650;margin-bottom:12px}
.sec-sub{font-size:16px;color:var(--txt-2);margin:0;max-width:640px}

/* ============ Guide steps ============ */
.guide-main{position:relative}
.card-x{
  background:var(--bg-nebula);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card-x:hover{transform:translateY(-4px);border-color:rgba(70,223,200,.35);box-shadow:var(--sh-2)}
.thumb{overflow:hidden;border-radius:var(--r-img);background:#0a0e26}
.thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s var(--ease)}
.card-x:hover .thumb img{transform:scale(1.03)}
.card-body-x{padding:26px}
.guide-main .card-body-x{padding:28px 30px 30px}
.guide-main h3{font-size:1.25rem;margin:16px 0 12px}
.guide-main p{color:var(--txt-2);font-size:15px;margin-bottom:18px}
.step-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.step-card{
  padding:20px;border-radius:var(--r-card);border:1px solid var(--line);
  background:rgba(21,27,69,.5);box-shadow:var(--sh-1);position:relative;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(70,223,200,.35)}
.step-card .num{
  font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--accent);
  text-shadow:0 0 18px rgba(255,196,107,.4);display:block;margin-bottom:10px;
}
.step-card strong{display:block;color:var(--txt-1);font-size:16px;font-weight:600;margin-bottom:6px}
.step-card p{margin:0;font-size:13.5px;color:var(--txt-3);line-height:1.75}
.step-card::after{
  content:"";position:absolute;top:34px;right:-9px;width:16px;height:1px;
  background:repeating-linear-gradient(90deg,rgba(70,223,200,.6) 0 4px,transparent 4px 8px);
}
.step-card:nth-child(2n)::after{display:none}

/* ============ Stats band ============ */
.stats-band{background:#05081a;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:64px 0;position:relative}
.stats-band::before{content:"";position:absolute;inset:0;background:radial-gradient(560px 300px at 50% 0%,rgba(70,223,200,.07),transparent 70%);pointer-events:none}
.stat{position:relative;padding-top:16px}
.stat::before{content:"";position:absolute;top:0;left:0;width:34px;height:1px;background:var(--primary);opacity:.7}
.stat-num{
  font-family:var(--font-num);font-size:clamp(2rem,4vw,2.8rem);font-weight:700;line-height:1;
  color:var(--accent);text-shadow:0 0 26px rgba(255,196,107,.35);
}
.stat-num small{font-size:14px;font-family:var(--font-cn);color:var(--txt-2);margin-left:4px;text-shadow:none}
.stat-label{margin-top:10px;font-size:14px;color:var(--txt-2)}

/* ============ Scenes ============ */
.scene-card{display:flex;flex-direction:column;height:100%}
.scene-card .thumb{margin:14px 14px 0}
.badge-x{
  display:inline-block;font-size:12px;letter-spacing:.08em;font-weight:500;
  padding:4px 10px;border-radius:var(--r-badge);
  color:var(--primary);background:rgba(70,223,200,.1);border:1px solid rgba(70,223,200,.28);
}
.badge-x.amber{color:var(--accent);background:rgba(255,196,107,.1);border-color:rgba(255,196,107,.3)}
.scene-card h3{font-size:1.05rem;margin:14px 0 10px}
.scene-card p{font-size:14px;color:var(--txt-2);margin-bottom:16px}
.scene-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto}
.offset-col{margin-top:0}
@media (min-width:992px){.offset-col{margin-top:34px}}

/* ============ Solutions tabs ============ */
.tab-list{display:flex;flex-direction:column;gap:10px}
.tab-btn{
  position:relative;text-align:left;padding:15px 18px;border-radius:var(--r-sm);cursor:pointer;
  border:1px solid var(--line);background:rgba(21,27,69,.45);color:var(--txt-2);
  font-size:15px;font-weight:500;transition:all .2s var(--ease);
}
.tab-btn:hover{color:var(--txt-1);border-color:var(--line-strong)}
.tab-btn.is-active{background:rgba(70,223,200,.12);color:var(--txt-1);border-color:rgba(70,223,200,.35);font-weight:600}
.tab-btn.is-active::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;background:var(--primary)}
.tab-panel{display:none}
.tab-panel.is-active{display:block;animation:fade .24s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.panel-card{padding:26px}
.panel-card h3{font-size:1.2rem;margin-bottom:12px}
.panel-card p{font-size:15px;color:var(--txt-2)}
.check-list li{position:relative;padding-left:22px;margin-bottom:10px;font-size:14.5px;color:var(--txt-2)}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px rgba(70,223,200,.7);
}

/* ============ News / CMS ============ */
.post-feature{display:block;text-decoration:none;overflow:hidden;height:100%}
.post-feature .thumb{margin:14px 14px 0}
.post-feature h3{font-size:1.2rem;margin:14px 0 10px;color:var(--txt-1);transition:color .2s var(--ease)}
.post-feature:hover h3{color:var(--primary)}
.post-feature p{font-size:14px;color:var(--txt-2);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.post-meta time{font-size:13px;color:var(--txt-3)}
.post-list{display:flex;flex-direction:column;gap:14px}
.post-row{
  display:flex;gap:16px;align-items:flex-start;padding:16px;text-decoration:none;
  border:1px solid var(--line);border-radius:var(--r-card);background:rgba(21,27,69,.42);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.post-row:hover{transform:translateY(-2px);border-color:rgba(70,223,200,.35);background:rgba(21,27,69,.62)}
.post-date{
  flex:0 0 58px;width:58px;height:58px;border-radius:12px;padding:6px;
  background:rgba(70,223,200,.1);border:1px solid rgba(70,223,200,.22);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-family:var(--font-num);font-size:12px;line-height:1.25;color:var(--primary);
  word-break:break-all;overflow:hidden;
}
.post-main{min-width:0;flex:1}
.post-main strong{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;color:var(--txt-1);font-size:16px;font-weight:600;margin-bottom:6px}
.post-main em{font-style:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--txt-2);font-size:14px;line-height:1.7}
.post-tags{margin-top:8px}
.empty-state{
  padding:48px 28px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:rgba(21,27,69,.32);
}
.empty-state strong{display:block;color:var(--txt-1);font-size:17px;margin-bottom:8px}
.empty-state p{color:var(--txt-3);font-size:14px;margin-bottom:18px}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line)}
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq .accordion-button{
  background:transparent;box-shadow:none;border:0;border-radius:0;
  color:var(--txt-1);font-size:17px;font-weight:600;
  padding:22px 46px 22px 18px;position:relative;
}
.faq .accordion-button:not(.collapsed){color:var(--txt-1);background:transparent}
.faq .accordion-button::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:2px;
  background:transparent;transition:background .2s var(--ease);
}
.faq .accordion-button:not(.collapsed)::before{background:var(--primary)}
.faq .accordion-button:focus{box-shadow:none;outline:none}
.faq .accordion-button:focus-visible{outline:3px solid rgba(70,223,200,.6);outline-offset:-3px}
.faq .accordion-button::after{
  width:14px;height:14px;background-image:linear-gradient(var(--primary),var(--primary)),linear-gradient(var(--primary),var(--primary));
  background-size:14px 2px,2px 14px;background-position:center;background-repeat:no-repeat;
  transition:transform .22s var(--ease),background-size .22s var(--ease);
}
.faq .accordion-button:not(.collapsed)::after{background-size:14px 2px,0 2px;transform:rotate(180deg)}
.faq .accordion-body{padding:0 18px 24px 18px;color:var(--txt-2);font-size:15px}

/* ============ Contact ============ */
.contact-info li{padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.09)}
.contact-info li:last-child{border-bottom:0}
.contact-info b{display:block;font-size:13px;letter-spacing:.1em;color:var(--txt-3);font-weight:500;margin-bottom:4px}
.contact-info span{color:var(--txt-1);font-size:15px}
.form-card{padding:28px}
.form-label{font-size:14px;color:var(--txt-2);margin-bottom:8px;display:block}
.form-control,.form-select{
  background:rgba(13,17,48,.72);border:1px solid var(--line-strong);color:var(--txt-1);
  height:48px;border-radius:var(--r-sm);padding:10px 14px;font-size:15px;width:100%;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.form-control::placeholder{color:var(--txt-3)}
.form-control:focus,.form-select:focus{
  background:rgba(13,17,48,.92);border-color:var(--primary);color:var(--txt-1);
  box-shadow:0 0 0 3px rgba(70,223,200,.18);outline:none;
}
textarea.form-control{min-height:132px;height:auto;resize:vertical}
.form-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2346DFC8' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;appearance:none;padding-right:42px}
.form-select option{background:#0D1130;color:var(--txt-1)}
.was-validated .form-control:invalid,.was-validated .form-select:invalid{border-color:rgba(255,120,110,.75)}
.was-validated .form-control:invalid:focus,.was-validated .form-select:invalid:focus{box-shadow:0 0 0 3px rgba(255,120,110,.18)}
.invalid-feedback{color:var(--danger);font-size:13px;display:none}
.was-validated .form-control:invalid~.invalid-feedback,.was-validated .form-select:invalid~.invalid-feedback{display:block}
.form-check{display:flex;align-items:flex-start;gap:10px}
.form-check-input{width:18px;height:18px;margin:3px 0 0;flex:0 0 18px;background-color:rgba(13,17,48,.85);border:1px solid var(--line-strong);border-radius:5px;appearance:none;cursor:pointer;transition:.2s var(--ease)}
.form-check-input:checked{background-color:var(--primary);border-color:var(--primary);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='10' viewBox='0 0 12 10'%3E%3Cpath d='M1 5l3.5 3.5L11 1.5' fill='none' stroke='%2304121A' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(70,223,200,.2);outline:none}
.form-check-label{font-size:13.5px;color:var(--txt-3);line-height:1.7}
.form-tip{margin-top:16px;padding:12px 16px;border-radius:var(--r-sm);font-size:14px;display:none;
  color:var(--primary);background:rgba(70,223,200,.1);border:1px solid rgba(70,223,200,.3)}
.form-tip.is-show{display:block}

/* ============ CTA strip ============ */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:32px 34px;position:relative;overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) .6px,transparent .9px);background-size:44px 44px;opacity:.05;
}
.cta-strip h2{font-size:clamp(1.25rem,2vw,1.6rem);margin-bottom:6px;position:relative}
.cta-strip p{margin:0;font-size:15px;color:var(--txt-2);position:relative}

/* ============ Footer ============ */
.site-footer{
  background:#05081a;border-top:1px solid var(--line);position:relative;z-index:1;
  padding:72px 0 0;margin-top:0;
}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:var(--grad-line)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand strong{font-size:16px;color:var(--txt-1);line-height:1.2}
.footer-brand small{display:block;font-size:11px;color:var(--txt-3);letter-spacing:.1em}
.footer-about{font-size:14px;color:var(--txt-3);max-width:330px;line-height:1.85}
.footer-col h3{font-size:15px;color:var(--txt-1);margin-bottom:16px;font-weight:650}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--txt-2);font-size:14px;text-decoration:none}
.footer-col a:hover{color:var(--primary)}
.footer-col .txt{font-size:14px;color:var(--txt-2)}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--txt-3);
}
.footer-bottom a{color:var(--txt-3);text-decoration:none}
.footer-bottom a:hover{color:var(--primary)}

/* ============ Responsive ============ */
@media (max-width:1199px){
  .nav-link{padding:10px 11px;font-size:14px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .section{padding:80px 0}
  .hero{padding:124px 0 76px;min-height:68vh;text-align:center}
  .hero-sub{margin-left:auto;margin-right:auto}
  .hero-actions,.hero-badges{justify-content:center}
  .hero-card{margin-top:8px;text-align:left}
  .stats-band{padding:52px 0}
  .tab-list{flex-direction:row;overflow-x:auto;padding-bottom:6px;gap:8px;scrollbar-width:none}
  .tab-list::-webkit-scrollbar{display:none}
  .tab-btn{white-space:nowrap;flex:0 0 auto}
}
@media (max-width:767px){
  .step-list{grid-template-columns:1fr}
  .step-card::after{display:none}
  .sec-head{margin-bottom:28px}
  .card-body-x{padding:20px}
  .guide-main .card-body-x{padding:20px}
  .form-card{padding:22px}
  .cta-strip{padding:24px}
}
@media (max-width:575px){
  .shell{padding:0 16px}
  .section{padding:60px 0}
  .hero{padding:112px 0 60px}
  .hero h1{font-size:1.85rem}
  .hero-actions .btn{width:100%}
  .post-row{flex-direction:row;gap:12px;padding:14px}
  .post-date{flex:0 0 52px;width:52px;height:52px;font-size:11px}
  .cta-strip{flex-direction:column;align-items:flex-start}
  .cta-strip .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg-deep:#070A1C;
  --bg-night:#0D1130;
  --bg-nebula:#151B45;
  --glass:rgba(21,27,69,.52);
  --glass-strong:rgba(21,27,69,.88);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#46DFC8;
  --primary-deep:#1FA893;
  --accent:#FFC46B;
  --violet:#6E5BFF;
  --txt-1:#EAF0FF;
  --txt-2:#A7B2D6;
  --txt-3:#6C789F;
  --grad-line:linear-gradient(90deg,transparent,rgba(70,223,200,.55),transparent);
  --sh-1:0 10px 30px -18px rgba(0,0,0,.75);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.85);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sec:104px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:72px;
  background:var(--bg-deep);
  color:var(--txt-2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(760px 520px at 12% -6%,rgba(70,223,200,.10),transparent 62%),
    radial-gradient(680px 480px at 92% 4%,rgba(110,91,255,.12),transparent 66%),
    radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:auto,auto,26px 26px;
}
h1,h2,h3,h4{margin:0;color:var(--txt-1);line-height:1.3}
p{margin:0 0 1em}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--primary)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
::selection{background:rgba(70,223,200,.3);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#05081a}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--primary-deep),rgba(70,223,200,.35));border-radius:8px;border:2px solid #05081a}
:focus-visible{outline:3px solid rgba(70,223,200,.5);outline-offset:2px;border-radius:6px}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:2}
.shell.narrow{max-width:820px}
@media(min-width:1400px){.shell{max-width:1360px}}
@media(max-width:575.98px){.shell{padding:0 16px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-pill);
  font-weight:600;font-size:15px;line-height:1.2;padding:12px 26px;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-sm{font-size:14px;padding:9px 18px}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04121A;
  box-shadow:0 10px 30px -10px rgba(70,223,200,.55),0 0 0 1px rgba(70,223,200,.35);
}
.btn-primary:hover{color:#04121A;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 16px 40px -12px rgba(70,223,200,.72),0 0 0 1px rgba(70,223,200,.5)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--txt-1)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(70,223,200,.08);color:var(--txt-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(7,10,28,.72);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  transition:background-color .24s var(--ease);
}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--grad-line);opacity:.75}
.site-header.is-scrolled{background:rgba(7,10,28,.94)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;position:relative;
  background:radial-gradient(circle at 30% 25%,#8bf6e6,rgba(70,223,200,.45) 46%,rgba(110,91,255,.75));
  box-shadow:0 0 24px -6px rgba(70,223,200,.8),inset 0 0 0 1px rgba(255,255,255,.18);
}
.brand-mark::after{content:"";position:absolute;inset:9px;border-radius:50%;background:rgba(7,10,28,.88)}
.brand-text strong{display:block;font-size:17px;font-weight:700;color:var(--txt-1);letter-spacing:.02em;line-height:1.2}
.brand-text small{display:block;font-size:11px;letter-spacing:.14em;color:var(--txt-3);line-height:1.6}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 15px;
  font-size:15px;color:var(--txt-2);text-decoration:none;border-radius:var(--r-pill);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--txt-1);background:rgba(255,255,255,.045)}
.nav-link.is-active{color:var(--txt-1);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:20%;width:60%;bottom:5px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;cursor:pointer;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.03);
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--primary);background:rgba(70,223,200,.08)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--txt-1);transition:transform .22s var(--ease),opacity .22s var(--ease)}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-cta-mobile{display:none}
@media(max-width:991.98px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:1100;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:2px;
    padding:92px 24px 36px;overflow-y:auto;
    background:var(--glass-strong);
    backdrop-filter:blur(18px) saturate(120%);
    -webkit-backdrop-filter:blur(18px) saturate(120%);
    border-left:1px solid var(--line);
    transform:translateX(105%);
    transition:transform .24s var(--ease);
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav .nav-link{height:52px;font-size:17px;padding:0 10px;border-radius:12px}
  .nav-link.is-active::after{left:10px;width:34px;bottom:12px;background:linear-gradient(90deg,var(--primary),transparent)}
  .nav-cta-mobile{display:inline-flex;margin-top:auto;width:100%}
}
@media(max-width:575.98px){
  .nav-actions .btn{display:none}
  .brand-text strong{font-size:15.5px}
  .brand-text small{font-size:10px;letter-spacing:.1em}
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:30px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3)}
.crumbs a{color:var(--txt-3);text-decoration:none}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:rgba(255,255,255,.22)}
.crumbs .cur{color:var(--txt-2);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-head{padding:28px 0 0}
.badge-cat{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;letter-spacing:.08em;
  padding:6px 13px;border-radius:8px;color:var(--primary);
  background:rgba(70,223,200,.1);border:1px solid rgba(70,223,200,.32);
}
.badge-cat i{font-size:11px}
.article-title{
  font-size:clamp(1.75rem,3.6vw,2.75rem);
  font-weight:700;letter-spacing:-.01em;line-height:1.32;
  margin:18px 0 22px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13.5px;color:var(--txt-3);
  padding-bottom:24px;border-bottom:1px solid var(--line);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--primary);opacity:.85;font-size:12px}

/* ---------- 正文阅读区 ---------- */
.article-section{padding:40px 0 0}
.article-body{max-width:780px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--txt-2)}
.article-body h2{
  position:relative;font-size:clamp(1.28rem,2.1vw,1.5rem);font-weight:650;
  color:var(--txt-1);line-height:1.45;margin:2.2em 0 .9em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.article-body h3{font-size:1.18rem;font-weight:600;color:var(--txt-1);margin:1.8em 0 .7em}
.article-body h4{font-size:1.04rem;font-weight:600;color:var(--txt-1);margin:1.5em 0 .6em}
.article-body p{margin:0 0 1.15em}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(70,223,200,.35)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body strong{color:var(--txt-1);font-weight:600}
.article-body ul,.article-body ol{padding-left:1.2em;margin:0 0 1.2em}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:.5em}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.78em;width:6px;height:6px;border-radius:50%;background:var(--primary);opacity:.85}
.article-body ol li{margin-bottom:.5em;padding-left:.2em}
.article-body ol li::marker{color:var(--primary);font-weight:600}
.article-body blockquote{
  margin:1.7em 0;padding:16px 22px;border-left:3px solid var(--primary);
  background:rgba(70,223,200,.06);border-radius:0 12px 12px 0;color:var(--txt-1);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;border:1px solid var(--line);margin:1.6em auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--txt-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;
  background:rgba(21,27,69,.5);border:1px solid var(--line);border-radius:12px;
  font-size:15px;margin:1.6em 0;
}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.article-body th{color:var(--txt-1);font-weight:600;background:rgba(255,255,255,.035);white-space:nowrap}
.article-body tr:last-child td{border-bottom:0}
.article-body pre{
  background:rgba(5,8,26,.8);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;font-size:14px;color:var(--txt-1);margin:1.6em 0;
}
.article-body code{
  font-family:ui-monospace,Menlo,Consolas,"Courier New",monospace;font-size:.9em;
  color:var(--primary);background:rgba(70,223,200,.09);padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;color:inherit;padding:0;font-size:inherit}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.4em 0}

.empty-state{
  max-width:780px;margin:0 auto;padding:64px 28px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--r-lg);
  background:rgba(21,27,69,.4);
}
.empty-state h2{font-size:1.4rem;margin-bottom:12px}
.empty-state p{margin-bottom:24px;color:var(--txt-3)}

/* ---------- 文末标签 / 分享 ---------- */
.article-foot{
  max-width:780px;margin:52px auto 0;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  font-size:12.5px;letter-spacing:.04em;padding:6px 14px;border-radius:var(--r-pill);
  color:var(--txt-2);border:1px solid var(--line-strong);background:rgba(255,255,255,.02);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{border-color:rgba(70,223,200,.45);color:var(--txt-1)}
.share-row{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--txt-3)}
.copy-tip{font-size:13px;color:var(--primary);opacity:0;transition:opacity .24s var(--ease)}
.copy-tip.is-on{opacity:1}

/* ---------- 通用区块 ---------- */
.section{padding:var(--sec) 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-title{font-size:clamp(1.4rem,2.5vw,2rem);font-weight:650}
.section-sub{font-size:14.5px;color:var(--txt-3);margin-top:10px}

/* ---------- 相关推荐 ---------- */
.reco-list{display:grid;grid-template-columns:1fr;gap:16px}
.reco-card{
  display:grid;grid-template-columns:210px 1fr;gap:22px;align-items:center;
  padding:16px;border-radius:var(--r-lg);text-decoration:none;
  background:var(--bg-nebula);border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.reco-card:hover{transform:translateY(-4px);border-color:rgba(70,223,200,.35);box-shadow:var(--sh-2)}
.reco-thumb{position:relative;overflow:hidden;border-radius:var(--r-md);aspect-ratio:16/10;background:#0b0f28}
.reco-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.reco-card:hover .reco-thumb img{transform:scale(1.04)}
.reco-body h3{font-size:17px;font-weight:600;margin-bottom:8px;color:var(--txt-1)}
.reco-body p{
  font-size:14px;color:var(--txt-3);margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.reco-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--txt-3);flex-wrap:wrap}
.reco-meta i{color:var(--primary);font-size:12px;margin-right:6px}
.reco-more{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--primary)}
.reco-more i{transition:transform .22s var(--ease)}
.reco-more:hover i{transform:translateX(4px)}

/* ---------- 返回入口 & CTA 条 ---------- */
.back-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;padding:56px 0 0}
.cta-band{padding:var(--sec) 0}
.cta-inner{
  position:relative;overflow:hidden;border-radius:22px;padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--glass);border:1px solid var(--line-strong);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
}
.cta-inner::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.7;
  background:radial-gradient(320px 180px at 8% 10%,rgba(70,223,200,.14),transparent 70%),
             radial-gradient(280px 160px at 94% 90%,rgba(110,91,255,.16),transparent 70%);
}
.cta-inner > *{position:relative;z-index:1}
.cta-copy h2{font-size:clamp(1.25rem,2.2vw,1.7rem);margin-bottom:10px}
.cta-copy p{margin:0;font-size:15px;color:var(--txt-3);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:var(--sec);
  background:var(--bg-night);border-top:1px solid var(--line);
  padding:64px 0 0;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-line);opacity:.8}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:32px;height:32px}
.footer-brand strong{display:block;font-size:16px;color:var(--txt-1);line-height:1.3}
.footer-brand small{display:block;font-size:11px;color:var(--txt-3);letter-spacing:.12em;line-height:1.6}
.footer-about{font-size:14px;color:var(--txt-3);line-height:1.85;max-width:400px;margin:0}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--txt-1)}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:11px}
.footer-col a,.footer-col .txt{font-size:14px;color:var(--txt-3);text-decoration:none;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:52px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--txt-3);
}
.footer-bottom span{line-height:1.8}

/* ---------- 响应式 ---------- */
@media(max-width:1199.98px){
  :root{--sec:88px}
}
@media(max-width:991.98px){
  :root{--sec:80px}
  body{padding-top:72px}
  .reco-card{grid-template-columns:180px 1fr;gap:18px}
}
@media(max-width:767.98px){
  .reco-card{grid-template-columns:1fr}
  .reco-thumb{aspect-ratio:16/9}
  .cta-inner{padding:30px 24px}
  .crumbs .cur{max-width:70vw}
}
@media(max-width:575.98px){
  :root{--sec:60px}
  .article-body{font-size:16.5px}
  .article-foot{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .back-row .btn{width:100%}
  .meta-row{gap:8px 16px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --bg-deep:#070A1C;
  --bg-night:#0D1130;
  --bg-nebula:#151B45;
  --glass:rgba(21,27,69,.52);
  --glass-strong:rgba(21,27,69,.78);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#46DFC8;
  --primary-deep:#1FA893;
  --accent:#FFC46B;
  --violet:#6E5BFF;
  --txt-1:#EAF0FF;
  --txt-2:#A7B2D6;
  --txt-3:#6C789F;
  --grad-line:linear-gradient(90deg,transparent,rgba(70,223,200,.55),transparent);
  --sh-1:0 10px 30px -18px rgba(0,0,0,.75);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.85);
  --r-card:18px;
  --r-sm:12px;
  --r-pill:999px;
  --r-img:14px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--txt-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(760px 520px at 12% -6%, rgba(70,223,200,.09), transparent 62%),
    radial-gradient(680px 480px at 92% 8%, rgba(110,91,255,.07), transparent 64%),
    radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:auto,auto,26px 26px;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:#7BEFDC}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--txt-1);line-height:1.3}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(70,223,200,.65);outline-offset:2px;border-radius:6px}
::selection{background:rgba(70,223,200,.3);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080B20}
::-webkit-scrollbar-thumb{background:rgba(70,223,200,.35);border-radius:999px;border:2px solid #080B20}
::-webkit-scrollbar-thumb:hover{background:rgba(70,223,200,.55)}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
@media (min-width:1440px){.shell{max-width:1360px}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,10,28,.74);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--grad-line)}
.site-header.is-scrolled{background:rgba(5,7,20,.92);box-shadow:0 18px 40px -30px rgba(0,0,0,.95)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;transition:height .22s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--txt-1)}
.brand:hover{color:var(--txt-1)}
.brand-mark{
  width:32px;height:32px;border-radius:10px;flex:none;position:relative;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:0 0 0 1px rgba(70,223,200,.35),0 10px 24px -12px rgba(70,223,200,.9);
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:50%;
  background:var(--bg-deep);box-shadow:inset 0 0 0 2px rgba(255,196,107,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:1.0625rem;font-weight:700;letter-spacing:.01em}
.brand-text small{font-size:.6875rem;color:var(--txt-3);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 14px;border-radius:var(--r-sm);
  color:var(--txt-2);font-size:.9375rem;font-weight:500;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:20%;right:20%;bottom:4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--txt-1);background:rgba(255,255,255,.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--txt-1);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line-strong);border-radius:12px;
  background:rgba(255,255,255,.03);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--txt-1);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-overlay{
  position:fixed;inset:0;background:rgba(4,6,18,.66);z-index:1035;
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.nav-overlay.show{opacity:1;pointer-events:auto}
.nav-drawer-foot{display:none}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);font-size:.9375rem;font-weight:600;
  border:1px solid transparent;cursor:pointer;letter-spacing:.01em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-sm{padding:9px 18px;font-size:.875rem}
.btn-primary,.btn-primary:focus{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04121A;border-color:transparent;
  box-shadow:0 10px 30px -10px rgba(70,223,200,.55),0 0 0 1px rgba(70,223,200,.35);
}
.btn-primary:hover,.btn-primary:active{
  background:linear-gradient(135deg,#5BEBd5,#25BCA4);
  color:#04121A;transform:translateY(-2px);
  box-shadow:0 16px 42px -12px rgba(70,223,200,.75),0 0 0 1px rgba(70,223,200,.5);
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--txt-1)}
.btn-ghost:hover{background:rgba(70,223,200,.08);border-color:var(--primary);color:var(--txt-1);transform:translateY(-2px)}
.btn-lg{padding:15px 30px;font-size:1rem}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:.9375rem}
.link-arrow i{transition:transform .2s var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ badges / chips ============ */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:.75rem;letter-spacing:.08em;font-weight:500;
  border:1px solid rgba(70,223,200,.32);background:rgba(70,223,200,.08);color:var(--primary);
}
.chip-accent{border-color:rgba(255,196,107,.35);background:rgba(255,196,107,.09);color:var(--accent)}
.chip-muted{border-color:var(--line-strong);background:rgba(255,255,255,.04);color:var(--txt-2)}

/* ============ sections ============ */
.section{padding:104px 0;position:relative}
.section-alt{background:var(--bg-night);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:650;margin-top:14px}
.sec-head p{margin-top:14px;color:var(--txt-2)}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}

/* ============ hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:88px 0 84px;
  background-image:linear-gradient(180deg,rgba(7,10,28,.86),rgba(7,10,28,.94)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero .shell{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:48px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:.8125rem;color:var(--txt-3);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--txt-3)}
.crumb a:hover{color:var(--primary)}
.crumb span.sep{opacity:.6}
.crumb .current{color:var(--txt-2)}
.page-hero h1{font-size:clamp(2rem,4.2vw,3.2rem);font-weight:700;letter-spacing:-.01em;line-height:1.22}
.page-hero .lead{margin-top:20px;font-size:1.0625rem;color:var(--txt-2);max-width:640px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.glass-card{
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line-strong);border-radius:var(--r-card);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.07);
  padding:28px;
}
.glass-card h3{font-size:1.0625rem;font-weight:650;display:flex;align-items:center;gap:8px}
.glass-card h3 i{color:var(--primary);font-size:.9rem}
.quick-list{margin-top:18px;display:flex;flex-direction:column;gap:14px}
.quick-list li{display:flex;align-items:flex-start;gap:12px;font-size:.9375rem;color:var(--txt-2)}
.quick-list .k{color:var(--txt-3);min-width:74px;font-size:.875rem}
.quick-list .v{color:var(--txt-1);font-weight:600}
.glass-card hr{border:0;border-top:1px solid var(--line);margin:20px 0}

/* ============ filter chips ============ */
.filter-bar{display:flex;gap:12px;flex-wrap:wrap;align-items:center;padding:22px 0 0}
.filter-bar .label{font-size:.8125rem;color:var(--txt-3);letter-spacing:.08em;margin-right:4px}
.filter-link{
  padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--line-strong);
  color:var(--txt-2);font-size:.875rem;background:rgba(255,255,255,.02);
  transition:all .2s var(--ease);
}
.filter-link:hover{border-color:var(--primary);color:var(--txt-1);background:rgba(70,223,200,.1);transform:translateY(-1px)}

/* ============ timeline ============ */
.timeline{position:relative;display:flex;flex-direction:column;gap:26px}
.timeline::before{
  content:"";position:absolute;left:27px;top:16px;bottom:16px;
  border-left:1px dashed rgba(70,223,200,.35);
}
.tl-item{position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);gap:24px;align-items:start}
.tl-dot{
  position:relative;z-index:1;width:56px;height:56px;border-radius:16px;
  display:grid;place-items:center;
  font-family:"Barlow","DIN Alternate",ui-monospace,monospace;
  font-size:1.0625rem;font-weight:700;color:var(--accent);
  background:linear-gradient(150deg,var(--bg-nebula),#0A0E28);
  border:1px solid rgba(70,223,200,.3);
  box-shadow:0 12px 26px -18px rgba(0,0,0,.9);
  letter-spacing:.04em;
}
.tl-card{
  background:var(--bg-nebula);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(70,223,200,.35);box-shadow:var(--sh-2)}
.tl-inner{display:grid;grid-template-columns:250px minmax(0,1fr)}
.tl-media{overflow:hidden;height:100%;min-height:200px}
.tl-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.tl-card:hover .tl-media img{transform:scale(1.03)}
.tl-body{padding:28px}
.tl-body h3{font-size:1.25rem;font-weight:600;margin-top:12px}
.tl-body p{margin-top:12px;color:var(--txt-2)}
.dot-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.dot-list li{position:relative;padding-left:18px;font-size:.9375rem;color:var(--txt-2)}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 3px rgba(70,223,200,.14);
}
.tl-tip{
  margin-top:18px;display:flex;gap:10px;align-items:flex-start;
  padding:12px 16px;border-radius:var(--r-sm);
  background:rgba(255,196,107,.07);border:1px solid rgba(255,196,107,.22);
  font-size:.875rem;color:var(--txt-2);
}
.tl-tip i{color:var(--accent);margin-top:5px;font-size:.85rem}

/* ============ summary glass ============ */
.summary-glass{
  margin-top:34px;padding:32px;border-radius:var(--r-card);
  background:var(--glass-strong);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line-strong);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.07);
}
.summary-glass h3{font-size:1.25rem;font-weight:650}
.summary-glass > p{margin-top:12px;color:var(--txt-2);max-width:840px}
.summary-grid{margin-top:24px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.summary-grid .cell{padding:18px;border-radius:var(--r-sm);background:rgba(255,255,255,.03);border:1px solid var(--line)}
.summary-grid .cell strong{display:block;font-size:.9375rem;color:var(--txt-1)}
.summary-grid .cell span{display:block;margin-top:8px;font-size:.875rem;color:var(--txt-3)}
.summary-glass .acts{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap}

/* ============ related cards ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--bg-nebula);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);color:var(--txt-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(70,223,200,.35);box-shadow:var(--sh-2);color:var(--txt-1)}
.rel-media{overflow:hidden;aspect-ratio:16/9}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.rel-card:hover .rel-media img{transform:scale(1.03)}
.rel-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.rel-body h3{font-size:1.0625rem;font-weight:600}
.rel-body p{font-size:.9375rem;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body .more{margin-top:auto;font-size:.875rem;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.rel-card:hover .more i{transform:translateX(3px)}
.rel-body .more i{transition:transform .2s var(--ease)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:48px;align-items:start}
.faq-side h2{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:650;margin-top:14px}
.faq-side p{margin-top:14px;color:var(--txt-2)}
.faq-side .side-note{margin-top:22px;padding:18px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(255,255,255,.03);font-size:.875rem;color:var(--txt-3)}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-btn{
  width:100%;text-align:left;position:relative;background:transparent;border:0;
  color:var(--txt-1);font-size:1.0625rem;font-weight:600;
  padding:20px 46px 20px 18px;cursor:pointer;line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-btn::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--primary);
  transition:height .22s var(--ease);
}
.faq-btn::after{
  content:"+";position:absolute;right:14px;top:50%;transform:translateY(-50%);
  color:var(--primary);font-size:1.25rem;line-height:1;font-weight:400;
  transition:transform .22s var(--ease);
}
.faq-btn[aria-expanded="true"]{color:var(--primary)}
.faq-btn[aria-expanded="true"]::before{height:58%}
.faq-btn[aria-expanded="true"]::after{content:"–"}
.faq-body{padding:0 46px 22px 18px;font-size:.9375rem;color:var(--txt-2)}

/* ============ CTA band ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-card);border:1px solid var(--line-strong);
  background:linear-gradient(120deg,rgba(21,27,69,.9),rgba(13,17,48,.88)),
             url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  box-shadow:var(--sh-2);
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:24px 24px;opacity:.7;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:clamp(1.35rem,2.2vw,1.85rem);font-weight:650}
.cta-band p{margin-top:10px;color:var(--txt-2);max-width:640px}
.cta-acts{display:flex;gap:14px;flex-wrap:wrap}

/* ============ pager ============ */
.pager{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:46px}
.pager .pg{
  min-width:44px;height:44px;padding:0 14px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--txt-2);font-size:.9375rem;
  background:rgba(255,255,255,.02);transition:all .2s var(--ease);
}
.pager .pg:hover{border-color:var(--primary);color:var(--txt-1);background:rgba(70,223,200,.1)}
.pager .pg.is-current{background:var(--primary);border-color:var(--primary);color:#04121A;font-weight:700}
.pager .pg.disabled{opacity:.45;pointer-events:none}

/* ============ contact strip ============ */
.contact-strip{
  margin-top:26px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
}
.contact-strip .item{
  padding:22px;border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--bg-nebula);box-shadow:var(--sh-1);
}
.contact-strip .item i{color:var(--primary);font-size:1rem}
.contact-strip .item strong{display:block;margin-top:12px;font-size:.9375rem}
.contact-strip .item span{display:block;margin-top:6px;font-size:.875rem;color:var(--txt-3);word-break:break-all}

/* ============ footer ============ */
.site-footer{
  position:relative;background:#05071A;border-top:1px solid var(--line);
  padding:64px 0 0;margin-top:0;
}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:var(--grad-line)}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand strong{display:block;font-size:1.0625rem;color:var(--txt-1)}
.footer-brand small{display:block;font-size:.6875rem;color:var(--txt-3);letter-spacing:.14em}
.footer-about{margin-top:18px;font-size:.9375rem;color:var(--txt-2);max-width:340px}
.footer-col h3{font-size:.9375rem;font-weight:650;margin-bottom:18px;color:var(--txt-1)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:var(--txt-2);font-size:.9375rem}
.footer-col a:hover{color:var(--primary)}
.footer-col .txt{color:var(--txt-2);font-size:.9375rem;word-break:break-all}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8125rem;color:var(--txt-3);
}

/* ============ responsive ============ */
@media (max-width:1199.98px){
  .tl-inner{grid-template-columns:210px minmax(0,1fr)}
}
@media (max-width:991.98px){
  .section{padding:80px 0}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;
    background:var(--glass-strong);
    -webkit-backdrop-filter:blur(20px) saturate(120%);
    backdrop-filter:blur(20px) saturate(120%);
    border-left:1px solid var(--line);
    padding:88px 22px 32px;margin-left:0;
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    transform:translateX(102%);transition:transform .24s var(--ease);
    z-index:1040;overflow-y:auto;box-shadow:-24px 0 60px -30px rgba(0,0,0,.95);
  }
  .main-nav.open{transform:translateX(0)}
  .nav-link{font-size:1.0625rem;padding:15px 6px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--primary)}
  .nav-toggle{display:flex}
  .nav-drawer-foot{display:block;margin-top:24px}
  .nav-drawer-foot .btn{width:100%}
  .nav-drawer-foot .info{margin-top:16px;font-size:.8125rem;color:var(--txt-3);line-height:1.9}
  .page-hero .shell{grid-template-columns:1fr;gap:32px}
  .page-hero{padding:64px 0 60px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .summary-grid{grid-template-columns:1fr}
  .contact-strip{grid-template-columns:1fr}
}
@media (max-width:767.98px){
  .tl-inner{grid-template-columns:1fr}
  .tl-media{min-height:0;aspect-ratio:16/9}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:28px;flex-direction:column;align-items:flex-start}
  .cta-acts{width:100%}
  .cta-acts .btn{width:100%}
}
@media (max-width:575.98px){
  .shell{padding:0 16px}
  .section{padding:60px 0}
  body{font-size:15.5px}
  .nav-wrap{height:64px;gap:12px}
  .brand-text small{display:none}
  .timeline::before{left:19px}
  .tl-item{grid-template-columns:40px minmax(0,1fr);gap:16px}
  .tl-dot{width:40px;height:40px;border-radius:12px;font-size:.875rem}
  .tl-body{padding:20px}
  .summary-glass{padding:22px}
  .hero-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --bg-deep:#070A1C;
  --bg-night:#0D1130;
  --bg-nebula:#151B45;
  --glass:rgba(21,27,69,.52);
  --glass-strong:rgba(21,27,69,.78);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#46DFC8;
  --primary-deep:#1FA893;
  --accent:#FFC46B;
  --violet:#6E5BFF;
  --txt-1:#EAF0FF;
  --txt-2:#A7B2D6;
  --txt-3:#6C789F;
  --sh-1:0 10px 30px -18px rgba(0,0,0,.75);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.85);
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --r-pill:999px;
  --grad-line:linear-gradient(90deg,transparent,rgba(70,223,200,.55),transparent);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec-pc:112px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--txt-2);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(circle at 12% 6%, rgba(70,223,200,.09), transparent 42%),
    radial-gradient(circle at 88% 2%, rgba(110,91,255,.07), transparent 40%),
    radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:auto,auto,26px 26px;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#7DF0DE}
h1,h2,h3,h4{color:var(--txt-1);margin:0;font-weight:650;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(70,223,200,.7);outline-offset:2px;border-radius:6px}

.shell{width:100%;max-width:1240px;margin:0 auto;padding-inline:24px}
@media (min-width:1400px){.shell{max-width:1360px}}
@media (max-width:575px){.shell{padding-inline:16px}}

.section{padding-block:var(--sec-pc)}
.section--tight{padding-block:80px}
.section--night{background:var(--bg-night);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.15rem);line-height:1.3}
.sec-head p{color:var(--txt-3);font-size:14px;max-width:520px;margin-top:10px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--primary);font-weight:500}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--primary)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:var(--r-pill);
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
  text-align:center;white-space:nowrap;
}
.btn-sm{padding:11px 20px;font-size:14px}
.btn.btn-primary{
  --bs-btn-color:#04121A;--bs-btn-hover-color:#04121A;--bs-btn-active-color:#04121A;
  --bs-btn-bg:transparent;--bs-btn-hover-bg:transparent;--bs-btn-active-bg:transparent;
  --bs-btn-border-color:transparent;--bs-btn-hover-border-color:transparent;--bs-btn-active-border-color:transparent;
  --bs-btn-focus-shadow-rgb:70,223,200;
  color:#04121A;
  background-image:linear-gradient(135deg,#5BEBD6,#1FA893);
  box-shadow:0 10px 30px -10px rgba(70,223,200,.55),0 0 0 1px rgba(70,223,200,.35);
}
.btn.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 16px 40px -12px rgba(70,223,200,.7),0 0 0 1px rgba(70,223,200,.5)}
.btn.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;color:var(--txt-1);border:1px solid var(--line-strong);
}
.btn-ghost:hover{color:var(--txt-1);border-color:var(--primary);background:rgba(70,223,200,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:500}
.link-arrow::after{content:"";width:6px;height:6px;border-top:1.5px solid currentColor;border-right:1.5px solid currentColor;transform:rotate(45deg);transition:transform .2s var(--ease)}
.link-arrow:hover::after{transform:translateX(3px) rotate(45deg)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.08em;font-weight:500;
  padding:5px 12px;border-radius:8px;
  border:1px solid rgba(70,223,200,.32);background:rgba(70,223,200,.08);color:var(--primary);
}
.tag--amber{border-color:rgba(255,196,107,.32);background:rgba(255,196,107,.08);color:var(--accent)}
.tag--neutral{border-color:var(--line-strong);background:rgba(255,255,255,.04);color:var(--txt-2)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,10,28,.62);
  backdrop-filter:blur(18px) saturate(130%);
  -webkit-backdrop-filter:blur(18px) saturate(130%);
  border-bottom:1px solid var(--line);
  transition:background-color .24s var(--ease),border-color .24s var(--ease);
}
.site-header::after{content:"";display:block;height:1px;background:var(--grad-line);opacity:.7}
.site-header.is-scrolled{background:rgba(7,10,28,.92)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{display:flex;align-items:center;gap:12px;color:var(--txt-1)}
.brand:hover{color:var(--txt-1)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:none;
  background:
    radial-gradient(circle at 70% 30%, rgba(255,196,107,.95) 0 2px, transparent 3px),
    radial-gradient(circle at 30% 68%, rgba(255,196,107,.6) 0 1.6px, transparent 3px),
    linear-gradient(140deg,#46DFC8,#1FA893 55%,#6E5BFF);
  box-shadow:0 8px 22px -10px rgba(70,223,200,.85),inset 0 1px 0 rgba(255,255,255,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.02em}
.brand-text small{font-size:11px;color:var(--txt-3);letter-spacing:.1em;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav .nav-link{
  position:relative;color:var(--txt-2);font-size:15px;font-weight:500;
  padding:9px 14px;border-radius:var(--r-pill);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.main-nav .nav-link:hover{color:var(--txt-1);background:rgba(255,255,255,.05)}
.main-nav .nav-link.is-active{color:var(--txt-1)}
.main-nav .nav-link.is-active::after{
  content:"";position:absolute;left:22%;right:22%;bottom:1px;height:2px;
  background:var(--primary);border-radius:2px;box-shadow:0 0 12px rgba(70,223,200,.8);
}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
  padding:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--txt-1);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-mask{position:fixed;inset:0;background:rgba(4,6,18,.72);backdrop-filter:blur(3px);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:70}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- 页面横幅 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding-block:76px 68px;
  background-image:linear-gradient(180deg,rgba(7,10,28,.86),rgba(7,10,28,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 -1px 0;height:1px;background:var(--grad-line);
}
.breadcrumb-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:26px}
.breadcrumb-bar a{color:var(--txt-3)}
.breadcrumb-bar a:hover{color:var(--primary)}
.breadcrumb-bar .sep{color:rgba(255,255,255,.2)}
.breadcrumb-bar .current{color:var(--txt-2)}
.page-hero h1{font-size:clamp(2rem,4.6vw,3.1rem);line-height:1.22;font-weight:700;margin:16px 0 0;max-width:900px}
.page-hero .lede{margin-top:20px;font-size:17px;line-height:1.85;color:var(--txt-2);max-width:760px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
  color:var(--txt-2);font-size:14px;
  transition:all .2s var(--ease);
}
.chip:hover{color:var(--txt-1);border-color:rgba(70,223,200,.5);background:rgba(70,223,200,.08)}
.chip.is-current{color:#04121A;background:linear-gradient(135deg,#5BEBD6,#1FA893);border-color:transparent;font-weight:600}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:40px}
.hero-stat{min-width:120px;padding-top:12px;border-top:1px solid var(--line-strong)}
.hero-stat b{display:block;font-size:26px;color:var(--accent);font-weight:700;letter-spacing:.01em;text-shadow:0 0 22px rgba(255,196,107,.35)}
.hero-stat span{font-size:13px;color:var(--txt-3)}

/* ---------- 图文交错 ---------- */
.feature-row{
  display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center;
  padding-block:44px;border-top:1px solid var(--line);
}
.feature-row:first-of-type{border-top:0;padding-top:0}
.feature-row.is-flip .feature-media{order:2}
.feature-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-1);
  background:var(--bg-nebula);
}
.feature-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
.feature-media:hover img{transform:scale(1.03)}
.feature-media .tag{position:absolute;left:16px;top:16px;background:rgba(7,10,28,.8);backdrop-filter:blur(8px)}
.feature-body .step-no{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
  color:var(--accent);letter-spacing:.1em;
  font-family:"Barlow","DIN Alternate",ui-monospace,monospace;
}
.feature-body .step-no::after{content:"";width:44px;height:1px;background:linear-gradient(90deg,rgba(255,196,107,.6),transparent)}
.feature-body h3{font-size:1.35rem;font-weight:650;margin:16px 0 12px;line-height:1.4}
.feature-body p{color:var(--txt-2);font-size:16px;line-height:1.85}
.feature-list{margin-top:22px;display:grid;gap:10px}
.feature-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--txt-2)}
.feature-list li::before{
  content:"";width:6px;height:6px;border-radius:50%;flex:none;margin-top:9px;
  background:var(--primary);box-shadow:0 0 10px rgba(70,223,200,.9);
}
.feature-body .link-arrow{margin-top:22px}

/* ---------- 特性矩阵 ---------- */
.matrix-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
}
.matrix-table{width:100%;min-width:820px;border-collapse:collapse;font-size:14.5px}
.matrix-table thead th{
  text-align:left;padding:18px 22px;font-size:12px;letter-spacing:.1em;font-weight:600;
  color:var(--primary);background:rgba(70,223,200,.06);
  border-bottom:1px solid var(--line-strong);white-space:nowrap;
}
.matrix-table tbody td{padding:18px 22px;border-bottom:1px solid var(--line);color:var(--txt-2);vertical-align:top;line-height:1.7}
.matrix-table tbody tr:last-child td{border-bottom:0}
.matrix-table tbody tr{transition:background-color .2s var(--ease)}
.matrix-table tbody tr:hover{background:rgba(70,223,200,.05)}
.matrix-table td:first-child{font-weight:650;color:var(--txt-1);text-align:left;white-space:nowrap}
.matrix-note{margin-top:16px;font-size:13px;color:var(--txt-3)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start}
.faq-aside h2{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.3}
.faq-aside p{margin-top:16px;font-size:14px;color:var(--txt-3)}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-width:0;--bs-accordion-border-radius:0;--bs-accordion-inner-border-radius:0}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent;color:var(--txt-1);font-size:16.5px;font-weight:600;
  padding:22px 46px 22px 18px;box-shadow:none;border-radius:0;
  position:relative;transition:color .2s var(--ease),background-color .2s var(--ease);
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:3px;
  background:transparent;transition:background-color .2s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--primary);background:rgba(70,223,200,.04)}
.accordion-button:not(.collapsed)::before{background:var(--primary);box-shadow:0 0 14px rgba(70,223,200,.7)}
.accordion-button:hover{color:var(--primary)}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-button::after{
  content:"";position:absolute;right:14px;top:50%;margin:0;
  width:14px;height:14px;transform:translateY(-50%);
  background-image:linear-gradient(var(--primary),var(--primary)),linear-gradient(var(--primary),var(--primary));
  background-size:14px 2px,2px 14px;background-position:center,center;background-repeat:no-repeat;
  transition:transform .22s var(--ease),background-size .22s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(180deg);background-size:14px 2px,2px 0}
.accordion-body{padding:0 46px 26px 18px;color:var(--txt-2);font-size:15px;line-height:1.9}

/* ---------- 交叉入口卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cross-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--bg-nebula);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.cross-card:hover{transform:translateY(-4px);border-color:rgba(70,223,200,.35);box-shadow:var(--sh-2)}
.cross-card .thumb{overflow:hidden}
.cross-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
.cross-card:hover .thumb img{transform:scale(1.03)}
.cross-card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.cross-card h3{font-size:1.1rem;font-weight:650;line-height:1.45}
.cross-card p{font-size:14.5px;color:var(--txt-2);line-height:1.8}
.cross-card .body .link-arrow{margin-top:auto}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  padding:38px 40px;border-radius:var(--r-card);
  background:var(--glass-strong);backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line-strong);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.07);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px, transparent 1px);
  background-size:22px 22px;opacity:.5;
}
.cta-band h2{font-size:clamp(1.3rem,2.2vw,1.7rem);line-height:1.4;position:relative}
.cta-band p{position:relative;margin-top:10px;font-size:15px;color:var(--txt-2);max-width:640px}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:14px;position:relative}

.contact-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px;
}
.contact-item{
  padding:22px 24px;border-radius:var(--r-card);
  background:var(--bg-nebula);border:1px solid var(--line);box-shadow:var(--sh-1);
}
.contact-item strong{display:block;font-size:15px;color:var(--txt-1);font-weight:650}
.contact-item span{display:block;margin-top:8px;font-size:14px;color:var(--txt-3)}

/* ---------- 分页位 ---------- */
.pager{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;margin-top:44px}
.pager-item{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:44px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);background:transparent;
  color:var(--txt-2);font-size:14px;font-weight:500;
  transition:all .2s var(--ease);
}
.pager-item:hover{color:var(--txt-1);border-color:rgba(70,223,200,.5);background:rgba(70,223,200,.08)}
.pager-item.is-current{background:linear-gradient(135deg,#5BEBD6,#1FA893);border-color:transparent;color:#04121A;font-weight:700}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:0;
  background:var(--bg-night);border-top:1px solid var(--line);
  padding-block:64px 0;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-line)}
.footer-brand{display:flex;align-items:center;gap:12px;color:var(--txt-1);margin-bottom:18px}
.footer-brand strong{display:block;font-size:16px;font-weight:700}
.footer-brand small{display:block;font-size:11px;color:var(--txt-3);letter-spacing:.1em;margin-top:3px}
.footer-about{font-size:14px;color:var(--txt-3);line-height:1.9;max-width:360px}
.footer-col h3{font-size:14px;font-weight:650;color:var(--txt-1);letter-spacing:.06em;margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-col .txt{font-size:14px;color:var(--txt-3)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:52px;padding:22px 0 26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--txt-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-pc:88px}
}
@media (max-width:991px){
  :root{--sec-pc:80px}
  .main-nav{
    position:fixed;top:0;right:0;z-index:75;
    height:100vh;width:min(330px,86vw);
    background:var(--glass-strong);backdrop-filter:blur(18px) saturate(130%);
    border-left:1px solid var(--line-strong);
    flex-direction:column;align-items:stretch;gap:0;
    padding:92px 22px 32px;overflow-y:auto;
    transform:translateX(100%);
    transition:transform .26s var(--ease);
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav .nav-link{font-size:17px;line-height:3.2;padding:0 8px;border-radius:10px}
  .main-nav .nav-link.is-active::after{left:8px;right:auto;width:3px;height:20px;top:50%;transform:translateY(-50%);bottom:auto;border-radius:3px}
  .nav-toggle{display:flex}
  .nav-actions .btn{display:none}
  .feature-row{grid-template-columns:1fr;gap:28px;padding-block:36px}
  .feature-row.is-flip .feature-media{order:0}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .contact-strip{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  .section{padding-block:60px}
  .section--tight{padding-block:56px}
  .page-hero{padding-block:56px 48px}
  .page-hero .lede{font-size:16px}
  .hero-stats{gap:22px;margin-top:30px}
  .hero-stat b{font-size:22px}
  .cta-band{padding:28px 22px;border-radius:16px}
  .cta-band .actions{width:100%}
  .cta-band .actions .btn{width:100%}
  .footer-bottom{flex-direction:column}
}
@media (max-width:575px){
  body{font-size:15.5px}
  .card-grid{grid-template-columns:1fr}
  .contact-strip{grid-template-columns:1fr}
  .feature-body h3{font-size:1.2rem}
  .accordion-button{font-size:15.5px;padding:18px 42px 18px 14px}
  .accordion-body{padding:0 20px 22px 14px}
  .chip{font-size:13px;padding:8px 14px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms!important;animation-duration:.01ms!important;scroll-behavior:auto!important}
}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070A1C}
::-webkit-scrollbar-thumb{background:rgba(70,223,200,.35);border-radius:8px;border:2px solid #070A1C}
::-webkit-scrollbar-thumb:hover{background:rgba(70,223,200,.6)}

/* roulang page: category3 */
:root{
  --bg-deep:#070A1C;
  --bg-night:#0D1130;
  --bg-nebula:#151B45;
  --glass:rgba(21,27,69,.52);
  --glass-strong:rgba(21,27,69,.78);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#46DFC8;
  --primary-deep:#1FA893;
  --accent:#FFC46B;
  --violet:#6E5BFF;
  --txt-1:#EAF0FF;
  --txt-2:#A7B2D6;
  --txt-3:#6C789F;
  --sh-1:0 10px 30px -18px rgba(0,0,0,.75);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.85);
  --r-card:18px;
  --r-sm:12px;
  --r-pill:999px;
  --r-img:14px;
  --r-badge:8px;
  --grad-line:linear-gradient(90deg,transparent,rgba(70,223,200,.55),transparent);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--txt-2);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(58rem 58rem at 84% -12%,rgba(70,223,200,.09),transparent 62%),
    radial-gradient(48rem 48rem at 4% 14%,rgba(110,91,255,.08),transparent 64%),
    radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:auto,auto,30px 30px;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#7BEFDC}
h1,h2,h3,h4{margin:0;color:var(--txt-1);font-weight:650;line-height:1.3;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.6vw,3.4rem);line-height:1.22;font-weight:700}
h2{font-size:clamp(1.5rem,2.6vw,2.15rem)}
h3{font-size:1.25rem;font-weight:600}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button{font:inherit}
:focus-visible{outline:3px solid rgba(70,223,200,.6);outline-offset:2px;border-radius:6px}
::selection{background:rgba(70,223,200,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080B1E}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--primary),var(--primary-deep));border-radius:999px;border:2px solid #080B1E}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.shell{max-width:1360px}}
@media (max-width:575.98px){.shell{padding:0 16px}}
.section{padding:104px 0}
@media (max-width:991.98px){.section{padding:80px 0}}
@media (max-width:575.98px){.section{padding:60px 0}}
.section-head{max-width:780px;margin-bottom:40px}
.section-head h2{margin:14px 0 12px}
.section-head p{margin:0;font-size:16px;color:var(--txt-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--primary);font-weight:500}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--grad-line)}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(7,10,28,.72);
  -webkit-backdrop-filter:blur(18px) saturate(130%);
  backdrop-filter:blur(18px) saturate(130%);
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--grad-line);opacity:.75}
.site-header.is-scrolled{background:rgba(6,9,24,.94);box-shadow:0 14px 34px -24px rgba(0,0,0,.95)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;transition:height .22s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--txt-1)}
.brand:hover{color:var(--txt-1)}
.brand-mark{
  position:relative;width:36px;height:36px;border-radius:11px;flex:0 0 36px;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:0 0 0 1px rgba(70,223,200,.35),0 10px 26px -14px rgba(70,223,200,.9);
  transition:transform .22s var(--ease);
}
.brand-mark::after{content:"";position:absolute;inset:9px;border-radius:50%;background:#080B1E;box-shadow:inset 0 0 0 2px rgba(255,196,107,.85)}
.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.04)}
.brand-text strong{display:block;font-size:16px;line-height:1.25;letter-spacing:.01em}
.brand-text small{display:block;font-size:12px;line-height:1.5;color:var(--txt-3);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;padding:9px 13px;font-size:15px;color:var(--txt-2);border-radius:9px;transition:color .2s var(--ease),background .2s var(--ease)}
.nav-link:hover{color:var(--txt-1);background:rgba(255,255,255,.045)}
.nav-link.is-active{color:var(--txt-1)}
.nav-link.is-active::after{content:"";position:absolute;left:50%;bottom:0;width:60%;height:2px;border-radius:2px;background:var(--primary);transform:translateX(-50%);box-shadow:0 0 12px rgba(70,223,200,.85)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:10px}
.nav-mask{position:fixed;inset:0;background:rgba(4,6,18,.62);opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);z-index:75}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;flex:0 0 44px;
  border-radius:12px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.03);cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--primary);background:rgba(70,223,200,.08)}
.nav-toggle span{position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--txt-1);transition:transform .22s var(--ease),opacity .22s var(--ease),top .22s var(--ease)}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){top:21px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){top:21px;transform:rotate(-45deg)}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border:1px solid transparent;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;text-align:center;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#04121A;box-shadow:0 10px 30px -10px rgba(70,223,200,.55),0 0 0 1px rgba(70,223,200,.35)}
.btn-primary:hover{color:#04121A;transform:translateY(-2px);filter:brightness(1.07);box-shadow:0 14px 40px -10px rgba(70,223,200,.72),0 0 0 1px rgba(70,223,200,.5)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:rgba(255,255,255,.02);border-color:var(--line-strong);color:var(--txt-1)}
.btn-ghost:hover{color:var(--txt-1);border-color:var(--primary);background:rgba(70,223,200,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary)}
.link-more::after{content:"";width:7px;height:7px;border-right:1.5px solid currentColor;border-top:1.5px solid currentColor;transform:rotate(45deg);transition:transform .2s var(--ease)}
.link-more:hover::after{transform:rotate(45deg) translate(3px,-3px)}
/* ---------- badges ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(70,223,200,.3);background:rgba(70,223,200,.08);
  color:var(--primary);font-size:12px;font-weight:500;letter-spacing:.08em;
}
.tag{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--r-badge);
  border:1px solid rgba(70,223,200,.26);background:rgba(70,223,200,.07);
  color:var(--primary);font-size:12px;letter-spacing:.06em;white-space:nowrap;
}
.tag-warm{border-color:rgba(255,196,107,.3);background:rgba(255,196,107,.08);color:var(--accent)}
/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:64px 0 84px;border-bottom:1px solid var(--line)}
.page-hero .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.22}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,28,.5) 0%,rgba(7,10,28,.92) 66%,var(--bg-deep) 100%)}
.page-hero .shell{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:24px}
.crumb a{color:var(--txt-3)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.5}
.crumb .current{color:var(--txt-2)}
.page-hero h1{margin:18px 0 16px;max-width:900px}
.hero-lead{max-width:720px;font-size:17px;line-height:1.9;color:var(--txt-2);margin:0}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.fact{display:inline-flex;align-items:center;gap:9px;padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(255,255,255,.025);font-size:13px;color:var(--txt-2)}
.fact i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(255,196,107,.9)}
/* ---------- chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;padding:26px 0 0}
.chip{padding:9px 18px;border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(255,255,255,.02);color:var(--txt-2);font-size:14px;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease)}
.chip:hover{color:var(--txt-1);border-color:var(--line-strong);transform:translateY(-1px)}
.chip.is-on{background:rgba(70,223,200,.13);border-color:rgba(70,223,200,.45);color:var(--primary)}
/* ---------- doc list ---------- */
.doc-list{border-top:1px solid var(--line)}
.doc-row{
  display:grid;grid-template-columns:64px minmax(0,1fr) auto 40px;
  gap:22px;align-items:center;padding:24px 16px;border-bottom:1px solid var(--line);
  color:inherit;transition:background .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.doc-row:hover{background:rgba(255,255,255,.038);transform:translateX(4px);color:inherit}
.doc-no{font-family:"Barlow","DIN Alternate",ui-monospace,monospace;font-size:20px;font-weight:700;letter-spacing:.05em;color:var(--accent);text-shadow:0 0 18px rgba(255,196,107,.35)}
.doc-main strong{display:block;font-size:17px;font-weight:600;color:var(--txt-1);margin-bottom:6px}
.doc-main em{display:-webkit-box;font-style:normal;font-size:14px;line-height:1.72;color:var(--txt-2);-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.doc-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}
.doc-arrow{position:relative;width:30px;height:30px;justify-self:end;border-radius:50%;border:1px solid var(--line-strong);transition:border-color .2s var(--ease),background .2s var(--ease)}
.doc-arrow::after{content:"";position:absolute;left:10px;top:10px;width:7px;height:7px;border-right:1.5px solid var(--primary);border-bottom:1.5px solid var(--primary);transform:rotate(-45deg)}
.doc-row:hover .doc-arrow{border-color:var(--primary);background:rgba(70,223,200,.1)}
.doc-note{margin-top:22px;font-size:13px;color:var(--txt-3)}
/* ---------- guard block ---------- */
.guard{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:44px;align-items:center}
.guard-media{position:relative;overflow:hidden;border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--sh-2);aspect-ratio:16/10}
.guard-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.guard-media:hover img{transform:scale(1.03)}
.guard-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,28,.05),rgba(7,10,28,.55))}
.point-list{display:grid;gap:14px}
.point{display:flex;gap:16px;padding:18px 20px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(255,255,255,.022);transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease)}
.point:hover{border-color:rgba(70,223,200,.35);background:rgba(70,223,200,.055);transform:translateY(-3px)}
.point-k{flex:0 0 34px;height:34px;display:grid;place-items:center;border-radius:10px;border:1px solid rgba(255,196,107,.28);background:rgba(255,196,107,.1);color:var(--accent);font-family:"Barlow",ui-monospace,monospace;font-size:14px;font-weight:700}
.point h3{font-size:16px;margin-bottom:4px}
.point p{margin:0;font-size:14px;line-height:1.72;color:var(--txt-2)}
/* ---------- stat band ---------- */
.stat-band{padding:64px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(7,10,28,.65),rgba(13,17,48,.92))}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.stat{padding-top:16px;border-top:1px solid var(--line-strong)}
.stat b{display:block;font-family:"Barlow","DIN Alternate",ui-monospace,monospace;font-size:clamp(1.9rem,3.4vw,2.9rem);line-height:1.12;color:var(--accent);text-shadow:0 0 26px rgba(255,196,107,.32)}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--txt-2)}
/* ---------- badge wall ---------- */
.badge-wall{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.badge-item{display:inline-flex;align-items:center;gap:9px;padding:10px 18px;border-radius:var(--r-badge);border:1px solid var(--line);background:rgba(255,255,255,.022);font-size:13px;color:var(--txt-2);transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease)}
.badge-item::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(70,223,200,.9)}
.badge-item:hover{border-color:rgba(70,223,200,.38);color:var(--txt-1);transform:translateY(-2px)}
/* ---------- cross entries ---------- */
.cross-list{display:grid;gap:12px}
.cross-row{display:flex;align-items:center;gap:18px;padding:16px 20px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(255,255,255,.022);color:var(--txt-1);transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease)}
.cross-row:hover{color:var(--txt-1);border-color:rgba(70,223,200,.4);background:rgba(70,223,200,.055);transform:translateX(4px)}
.cross-row img{width:56px;height:56px;flex:0 0 56px;border-radius:12px;object-fit:cover}
.cross-row .cross-main{min-width:0}
.cross-row strong{display:block;font-size:16px;font-weight:600;margin-bottom:2px}
.cross-row small{display:block;font-size:13px;color:var(--txt-3);line-height:1.6}
.cross-row .cross-go{margin-left:auto;font-size:13px;color:var(--primary);white-space:nowrap}
/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:minmax(0,.74fr) minmax(0,1.26fr);gap:52px;align-items:start}
.faq-aside p{font-size:15px;color:var(--txt-2);margin-top:14px}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-item:first-child{border-top:1px solid var(--line)}
.accordion-button{position:relative;background:transparent;border:0;box-shadow:none!important;color:var(--txt-1);font-size:1.05rem;font-weight:600;padding:20px 52px 20px 18px;border-radius:0}
.accordion-button::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:transparent;transition:background .22s var(--ease)}
.accordion-button::after{content:"";position:absolute;right:18px;top:50%;width:12px;height:12px;margin:0;background:none;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-70%) rotate(45deg);transition:transform .22s var(--ease),opacity .22s var(--ease);opacity:.7}
.accordion-button:not(.collapsed){color:var(--primary);background:transparent}
.accordion-button:not(.collapsed)::before{background:var(--primary)}
.accordion-button:not(.collapsed)::after{transform:translateY(-25%) rotate(-135deg);opacity:1}
.accordion-button:hover{color:var(--primary)}
.accordion-body{padding:0 52px 22px 18px;font-size:15px;line-height:1.85;color:var(--txt-2)}
/* ---------- cta ---------- */
.cta-card{
  position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:34px;align-items:center;padding:42px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.07);
}
.cta-card::before{content:"";position:absolute;inset:0;background:
  radial-gradient(24rem 24rem at 92% -30%,rgba(70,223,200,.16),transparent 60%),
  radial-gradient(20rem 20rem at 4% 130%,rgba(110,91,255,.16),transparent 62%);pointer-events:none}
.cta-card > *{position:relative;z-index:2}
.cta-card h2{margin-bottom:12px}
.cta-block{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-meta{display:grid;gap:8px;font-size:14px;color:var(--txt-2)}
.cta-meta span{display:flex;gap:10px;align-items:center}
.cta-meta b{color:var(--txt-1);font-weight:600}
/* ---------- pager ---------- */
.pager-wrap{padding:0 0 96px}
.pager-label{text-align:center;font-size:13px;color:var(--txt-3);margin-bottom:16px}
.pager{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.pager a,.pager span{min-width:46px;height:46px;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--line);color:var(--txt-2);font-size:14px;line-height:1;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease)}
.pager a:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.pager .is-current{background:var(--primary);border-color:var(--primary);color:#04121A;font-weight:700}
/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--bg-night);padding:72px 0 0;margin-top:0}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-line)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;color:var(--txt-1)}
.footer-brand strong{display:block;font-size:16px;line-height:1.25}
.footer-brand small{display:block;font-size:12px;color:var(--txt-3);letter-spacing:.06em}
.footer-about{font-size:14px;line-height:1.85;color:var(--txt-2);max-width:380px}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--txt-1);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--txt-2)}
.footer-col a:hover{color:var(--primary)}
.footer-col .txt{font-size:14px;color:var(--txt-3)}
.footer-bottom{margin-top:56px;padding:22px 0;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:var(--txt-3)}
/* ---------- responsive ---------- */
@media (max-width:991.98px){
  .nav-actions .btn{display:none}
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:80;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:96px 20px 32px;overflow-y:auto;
    background:rgba(13,17,48,.95);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    transform:translateX(103%);transition:transform .26s var(--ease);
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav .nav-link{padding:17px 14px;font-size:17px;border-bottom:1px solid var(--line);border-radius:0;line-height:1.4}
  .main-nav .nav-link.is-active::after{left:0;top:50%;bottom:auto;width:3px;height:20px;transform:translateY(-50%)}
  .guard{grid-template-columns:1fr;gap:30px}
  .faq-grid{grid-template-columns:1fr;gap:30px}
  .cta-card{grid-template-columns:1fr;padding:32px}
}
@media (max-width:767.98px){
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .doc-row{grid-template-columns:44px minmax(0,1fr);gap:16px;padding:20px 12px}
  .doc-tags{grid-column:2;justify-content:flex-start}
  .doc-arrow{display:none}
  .cross-row img{width:48px;height:48px;flex:0 0 48px}
  .cross-row .cross-go{display:none}
}
@media (max-width:575.98px){
  .page-hero{padding:44px 0 60px}
  .brand-text small{display:none}
  .hero-cta .btn{width:100%}
  .cta-card{padding:24px}
  .cta-block .btn{width:100%}
  .accordion-button{padding:18px 44px 18px 14px;font-size:1rem}
  .accordion-body{padding:0 20px 20px 14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --bg-deep:#070A1C;
  --bg-night:#0D1130;
  --bg-nebula:#151B45;
  --glass:rgba(21,27,69,.52);
  --glass-strong:rgba(21,27,69,.78);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#46DFC8;
  --primary-deep:#1FA893;
  --accent:#FFC46B;
  --violet:#6E5BFF;
  --txt-1:#EAF0FF;
  --txt-2:#A7B2D6;
  --txt-3:#6C789F;
  --grad-line:linear-gradient(90deg,transparent,rgba(70,223,200,.55),transparent);
  --r-card:18px;
  --r-sm:12px;
  --r-pill:999px;
  --r-img:14px;
  --r-badge:8px;
  --sh-1:0 10px 30px -18px rgba(0,0,0,.75);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.85);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec-pad:104px;
}

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

html{scroll-behavior:smooth}

body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--txt-2);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(circle at 18% 4%, rgba(70,223,200,.10), transparent 42%),
    radial-gradient(circle at 82% 0%, rgba(110,91,255,.09), transparent 46%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px, transparent 1.4px);
  background-size:170px 170px;
  opacity:.05;
}

img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease),opacity .18s var(--ease)}
a:hover{color:#6FEFDB}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--txt-1);margin:0;font-weight:650;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

::selection{background:rgba(70,223,200,.3);color:#fff}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A0E22}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,rgba(70,223,200,.6),rgba(31,168,147,.6));border-radius:999px;border:2px solid #0A0E22}

.shell{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

@media (min-width:1400px){.shell{max-width:1360px}}

.section{padding-top:var(--sec-pad);padding-bottom:var(--sec-pad);position:relative;z-index:1}
.section--tight{padding-top:64px;padding-bottom:64px}
.section--band{background:var(--bg-night);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.section-head{margin-bottom:40px;max-width:760px}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;font-weight:500;
  color:var(--primary);
  border:1px solid rgba(70,223,200,.28);
  background:rgba(70,223,200,.07);
  border-radius:var(--r-badge);
  padding:5px 12px;
  margin-bottom:16px;
}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.15rem);line-height:1.3;margin-bottom:12px}
.section-head p{font-size:15px;color:var(--txt-2);max-width:640px}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,10,28,.74);
  backdrop-filter:blur(18px) saturate(130%);
  -webkit-backdrop-filter:blur(18px) saturate(130%);
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:var(--grad-line);opacity:.6;
}
.site-header.is-scrolled{background:rgba(6,9,24,.92);box-shadow:0 18px 40px -30px rgba(0,0,0,.95)}
.site-header.is-scrolled .nav-wrap{height:60px}

.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .22s var(--ease)}

.brand{display:flex;align-items:center;gap:12px;color:var(--txt-1);flex-shrink:0}
.brand:hover{color:var(--txt-1)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex-shrink:0;
  background:radial-gradient(circle at 32% 28%, #7DF3E1 0%, rgba(70,223,200,.85) 32%, rgba(110,91,255,.62) 100%);
  box-shadow:0 0 0 1px rgba(70,223,200,.35), 0 0 20px -6px rgba(70,223,200,.8);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:4px;
  background:radial-gradient(circle at 50% 50%, rgba(255,255,255,.95), rgba(255,255,255,0) 70%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.01em}
.brand-text small{font-size:11.5px;color:var(--txt-3);letter-spacing:.06em}

.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 14px;
  font-size:15px;color:var(--txt-2);
  border-radius:var(--r-pill);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link:hover{color:var(--txt-1);background:rgba(255,255,255,.05)}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:0;height:2px;border-radius:2px;
  background:var(--primary);
  transform:translateX(-50%);
  transition:width .22s var(--ease);
}
.nav-link.is-active{color:var(--txt-1);font-weight:600;background:rgba(70,223,200,.06)}
.nav-link.is-active::after{width:60%}

.nav-actions{display:flex;align-items:center;gap:12px}

.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.03);
  cursor:pointer;
  padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--txt-1);transition:transform .22s var(--ease),opacity .18s var(--ease)}
.nav-toggle:hover{border-color:rgba(70,223,200,.5);background:rgba(70,223,200,.08)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 移动抽屉 ---------- */
.nav-mask{
  position:fixed;inset:0;z-index:70;
  background:rgba(4,6,18,.66);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;
  width:min(340px,88vw);
  background:var(--glass-strong);
  backdrop-filter:blur(20px) saturate(130%);
  -webkit-backdrop-filter:blur(20px) saturate(130%);
  border-left:1px solid var(--line-strong);
  transform:translateX(102%);
  transition:transform .26s var(--ease);
  display:flex;flex-direction:column;
  padding:22px 22px 26px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:14px}
.drawer-head strong{color:var(--txt-1);font-size:15px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line-strong);
  background:transparent;color:var(--txt-2);font-size:18px;line-height:1;cursor:pointer;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.drawer-close:hover{color:var(--txt-1);border-color:rgba(70,223,200,.5)}
.drawer-nav{display:flex;flex-direction:column;flex:1}
.drawer-nav a{
  font-size:17px;color:var(--txt-2);padding:16px 4px;
  border-bottom:1px solid var(--line);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.drawer-nav a:hover{color:var(--txt-1);padding-left:10px}
.drawer-nav a.is-active{color:var(--primary);font-weight:600}
.drawer-foot{border-top:1px solid var(--line);padding-top:18px;margin-top:18px;display:flex;flex-direction:column;gap:12px}
.drawer-foot .meta{font-size:13px;color:var(--txt-3);line-height:1.7}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn-lg{min-height:54px;padding:0 32px;font-size:16px}
.btn-primary,.btn-primary:focus{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04121A;
  border-color:rgba(70,223,200,.35);
  box-shadow:0 10px 30px -10px rgba(70,223,200,.55),0 0 0 1px rgba(70,223,200,.35);
}
.btn-primary:hover{
  color:#04121A;
  transform:translateY(-2px);
  background:linear-gradient(135deg,#5EEBD6,#25B9A2);
  box-shadow:0 16px 42px -12px rgba(70,223,200,.72),0 0 0 1px rgba(70,223,200,.5);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 22px -12px rgba(70,223,200,.6)}
.btn-ghost{
  background:transparent;color:var(--txt-1);border-color:var(--line-strong);
}
.btn-ghost:hover{color:var(--txt-1);border-color:rgba(70,223,200,.6);background:rgba(70,223,200,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn:focus-visible,.nav-toggle:focus-visible,.drawer-close:focus-visible,a:focus-visible,.qa-card:focus-visible{
  outline:3px solid rgba(70,223,200,.75);outline-offset:2px;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
}
.link-arrow::after{
  content:"";width:7px;height:7px;border-top:1.6px solid currentColor;border-right:1.6px solid currentColor;
  transform:rotate(45deg);transition:transform .18s var(--ease);
}
.link-arrow:hover::after{transform:rotate(45deg) translate(3px,-3px)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding-top:26px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3)}
.crumb a{color:var(--txt-3)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.55}
.crumb .current{color:var(--txt-2)}

/* ---------- 分类头 ---------- */
.cat-hero{
  position:relative;
  margin-top:22px;
  padding:56px 40px 50px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(7,10,28,.82),rgba(7,10,28,.94)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-line);
}
.cat-hero h1{
  font-size:clamp(2rem,4vw,2.9rem);
  line-height:1.24;
  margin-bottom:14px;
  max-width:820px;
}
.cat-hero .lead{font-size:16px;color:var(--txt-2);max-width:720px}
.cat-hero .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

.chip{
  display:inline-flex;align-items:center;gap:8px;
  min-height:38px;padding:0 16px;
  font-size:13px;letter-spacing:.03em;
  color:var(--txt-2);
  background:rgba(255,255,255,.03);
  border:1px solid var(--line-strong);
  border-radius:var(--r-pill);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
a.chip:hover{color:var(--txt-1);border-color:rgba(70,223,200,.55);background:rgba(70,223,200,.09);transform:translateY(-2px)}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(255,196,107,.8)}

.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}

/* ---------- 搜索 ---------- */
.search-panel{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  padding:22px 24px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-1), inset 0 1px 0 rgba(255,255,255,.06);
}
.search-field{position:relative;flex:1 1 320px;min-width:240px}
.search-field svg{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:17px;height:17px;stroke:var(--txt-3);fill:none;stroke-width:1.8}
.search-field input{
  width:100%;height:52px;
  padding:0 18px 0 48px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-strong);
  background:rgba(7,10,28,.6);
  color:var(--txt-1);
  font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-field input::placeholder{color:var(--txt-3)}
.search-field input:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(70,223,200,.22);
}
.search-hint{font-size:13px;color:var(--txt-3);flex:1 1 220px}
.hot-tags{display:flex;flex-wrap:wrap;gap:8px;width:100%;padding-top:4px}
.hot-tags span{font-size:12px;color:var(--txt-3);letter-spacing:.06em;align-self:center}
.hot-tags button{
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--txt-2);font-size:12.5px;padding:6px 12px;border-radius:var(--r-badge);
  cursor:pointer;transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.hot-tags button:hover{color:var(--txt-1);border-color:rgba(70,223,200,.5);background:rgba(70,223,200,.08)}

/* ---------- 问答卡 ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.qa-card{
  display:flex;flex-direction:column;gap:12px;
  padding:26px 26px 24px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-nebula);
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.qa-card:hover{transform:translateY(-4px);border-color:rgba(70,223,200,.35);box-shadow:var(--sh-2)}
.qa-card h3{font-size:1.12rem;line-height:1.5;display:flex;gap:12px;align-items:flex-start}
.qa-card h3 .idx{
  font-family:"Barlow","DIN Alternate",ui-monospace,monospace;
  font-size:12px;color:var(--accent);letter-spacing:.06em;
  border:1px solid rgba(255,196,107,.3);
  background:rgba(255,196,107,.08);
  border-radius:var(--r-badge);
  padding:3px 8px;flex-shrink:0;margin-top:3px;
}
.qa-card p{font-size:14.5px;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.qa-card .qa-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);margin-top:auto}

/* ---------- 手风琴 FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:48px;align-items:start}
.faq-aside h2{font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.32;margin-bottom:14px}
.faq-aside p{font-size:14.5px;color:var(--txt-2);margin-bottom:22px}
.faq-aside .stat{
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(255,255,255,.03);
  padding:16px 18px;margin-bottom:12px;
}
.faq-aside .stat strong{display:block;font-size:22px;color:var(--accent);font-family:"Barlow","DIN Alternate",ui-monospace,monospace;letter-spacing:.02em}
.faq-aside .stat span{font-size:13px;color:var(--txt-3)}

.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-width:0;--bs-accordion-border-radius:0;--bs-accordion-inner-border-radius:0;--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-body-padding-x:0}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-item:first-child{border-top:1px solid var(--line)}
.accordion-button{
  position:relative;
  background:transparent;
  color:var(--txt-1);
  font-size:16px;font-weight:600;line-height:1.6;
  padding:22px 44px 22px 20px;
  box-shadow:none;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:50%;
  width:3px;height:0;border-radius:2px;background:var(--primary);
  transform:translateY(-50%);
  transition:height .22s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--txt-1);background:rgba(70,223,200,.045)}
.accordion-button:not(.collapsed)::before{height:58%}
.accordion-button:hover{background:rgba(255,255,255,.035)}
.accordion-button::after{
  content:"+";
  background-image:none !important;
  width:auto;height:auto;
  font-size:20px;font-weight:400;line-height:1;
  color:var(--primary);
  position:absolute;right:16px;top:50%;
  transform:translateY(-50%);
  transition:transform .22s var(--ease),color .18s var(--ease);
}
.accordion-button:not(.collapsed)::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.accordion-body{
  padding:0 44px 24px 20px;
  font-size:15px;color:var(--txt-2);line-height:1.9;
}
.accordion-body ul{display:flex;flex-direction:column;gap:8px}
.accordion-body li{position:relative;padding-left:16px}
.accordion-body li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:5px;height:5px;border-radius:50%;background:var(--primary);opacity:.85;
}

/* ---------- 交叉入口 ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.cross-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-nebula);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cross-card:hover{transform:translateY(-4px);border-color:rgba(70,223,200,.35);box-shadow:var(--sh-2)}
.cross-card .thumb{aspect-ratio:16/9;overflow:hidden;border-radius:0}
.cross-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s var(--ease)}
.cross-card:hover .thumb img{transform:scale(1.03)}
.cross-card .body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.cross-card h3{font-size:1.06rem}
.cross-card p{font-size:14px;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.badge-soft{
  display:inline-flex;align-items:center;
  font-size:12px;letter-spacing:.08em;
  color:var(--primary);
  background:rgba(70,223,200,.1);
  border:1px solid rgba(70,223,200,.26);
  border-radius:var(--r-badge);
  padding:4px 10px;
}
.badge-neutral{
  display:inline-flex;align-items:center;
  font-size:12px;letter-spacing:.06em;
  color:var(--txt-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-badge);
  padding:4px 10px;
}
.badge-accent{
  display:inline-flex;align-items:center;
  font-size:12px;letter-spacing:.06em;
  color:var(--accent);
  background:rgba(255,196,107,.09);
  border:1px solid rgba(255,196,107,.26);
  border-radius:var(--r-badge);
  padding:4px 10px;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:38px 40px;
  border-radius:var(--r-card);
  border:1px solid var(--line-strong);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-2), inset 0 1px 0 rgba(255,255,255,.07);
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-line);
}
.cta-band h2{font-size:clamp(1.4rem,2.2vw,1.8rem);margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--txt-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}

/* ---------- 分页 ---------- */
.pager{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:44px;flex-wrap:wrap}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:44px;padding:0 14px;
  border-radius:var(--r-pill);
  font-size:14px;color:var(--txt-2);
  border:1px solid var(--line-strong);
  background:transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.pager a:hover{color:var(--txt-1);border-color:rgba(70,223,200,.5);background:rgba(70,223,200,.08);transform:translateY(-2px)}
.pager .is-current{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04121A;border-color:rgba(70,223,200,.4);font-weight:700;
  box-shadow:0 10px 26px -12px rgba(70,223,200,.7);
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:var(--sec-pad);
  background:#05081A;
  border-top:1px solid var(--line);
  padding-top:64px;
  z-index:1;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;background:var(--grad-line);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand strong{display:block;color:var(--txt-1);font-size:16px}
.footer-brand small{display:block;font-size:11.5px;color:var(--txt-3);letter-spacing:.06em}
.footer-about{font-size:14px;color:var(--txt-2);max-width:340px}
.footer-col h3{font-size:14px;font-weight:600;color:var(--txt-1);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col .txt{font-size:14px;color:var(--txt-2)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:52px;
  padding:22px 0 28px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--txt-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-pad:88px}
}

@media (max-width:991px){
  :root{--sec-pad:80px}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-primary{display:none}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .cross-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .qa-grid{grid-template-columns:minmax(0,1fr)}
  .cat-hero{padding:44px 28px 40px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 28px}
}

@media (max-width:767px){
  .section-head--split{flex-direction:column;align-items:flex-start}
  .cross-grid{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:575px){
  :root{--sec-pad:60px}
  .shell{padding:0 16px}
  body{font-size:15.5px}
  .cat-hero{padding:34px 20px 32px;border-radius:16px}
  .cat-hero h1{font-size:1.72rem}
  .search-panel{padding:18px}
  .qa-card{padding:20px}
  .accordion-button{padding:18px 38px 18px 16px;font-size:15px}
  .accordion-body{padding:0 16px 20px 16px}
  .cta-band{padding:26px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:6px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}