/* roulang page: index */
:root{
  --bg-900:#0F0D1A;
  --bg-800:#17142A;
  --bg-700:#201C38;
  --bg-input:#1B1830;
  --line:rgba(147,130,255,.18);
  --primary:#6D4AFF;
  --primary-hover:#5636E8;
  --accent:#C8FF3D;
  --accent-2:#FF5C39;
  --text-100:#F4F2FF;
  --text-70:#B9B3D6;
  --text-45:#7D7898;
  --light-bg:#F6F5FB;
  --light-text:#1A1730;
  --light-text-2:#5B5678;
  --ok:#24D07E;
  --warn:#FFB020;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 1px 0 var(--line), 0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-hover:0 1px 0 rgba(109,74,255,.4), 0 26px 52px -24px rgba(0,0,0,.85);
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text-100);
  background:var(--bg-900);
  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 .18s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0 0 14px;color:var(--text-100);font-weight:700;line-height:1.25}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:1.2em}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto}
@media (min-width:768px){.grid-container{padding-left:32px;padding-right:32px}}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-margin-x>.cell{padding-left:12px;padding-right:12px}

/* ---------- 顶栏 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  transition:background .25s ease, box-shadow .25s ease, height .25s ease;
  background:transparent;
}
.site-header.is-stuck{
  background:rgba(15,13,26,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 12px 34px -22px rgba(0,0,0,.9);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;height:76px;
}
.site-header.is-stuck .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;flex:0 0 auto}
.brand-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(140deg,var(--primary) 0%,#9B7BFF 55%,var(--accent) 130%);
  box-shadow:0 0 0 1px rgba(200,255,61,.28), 0 8px 20px -10px rgba(109,74,255,.9);
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) rotate(0deg);
  width:10px;height:10px;border-radius:3px;background:#0F0D1A;opacity:.85;
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.2px;color:var(--text-100)}
.brand:hover .brand-text{color:var(--accent)}
.main-nav{
  display:flex;align-items:center;gap:6px;
  padding:5px;border-radius:999px;
  background:rgba(32,28,56,.5);
  border:1px solid var(--line);
}
.main-nav .nav-link{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:40px;padding:0 16px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--text-70);
  transition:background .18s ease,color .18s ease;
  white-space:nowrap;
}
.main-nav .nav-link:hover{background:rgba(109,74,255,.16);color:var(--text-100)}
.main-nav .nav-link.is-active{background:var(--primary);color:#fff}
.main-nav .nav-link.is-active:hover{background:var(--primary-hover);color:#fff}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.drawer-cta{display:none}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:12px;
  border:1px solid var(--line);background:rgba(32,28,56,.6);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--text-100);transition:transform .2s ease,opacity .2s ease}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;letter-spacing:.3px;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
  border:1.5px solid transparent;text-align:center;
}
.btn-primary{background:var(--accent);color:#12102A;border-color:var(--accent)}
.btn-primary:hover{background:#D6FF66;color:#12102A;transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(200,255,61,.5)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text-100);border-color:rgba(244,242,255,.28)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(109,74,255,.14);color:#fff}
.btn-purple{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-purple:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(109,74,255,.7)}
.btn-capsule{border-radius:999px}
.btn-sm{min-height:40px;padding:0 16px;font-size:14.5px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary)}
.link-more .arrow{transition:transform .18s ease}
.link-more:hover .arrow{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.2px;
  background:rgba(109,74,255,.16);color:#B9A6FF;
}
.badge-accent{background:rgba(200,255,61,.14);color:var(--accent)}
.badge-warn{background:rgba(255,176,32,.14);color:var(--warn)}
.badge-ok{background:rgba(36,208,126,.14);color:var(--ok)}
.dot{color:var(--text-45);margin:0 2px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:150px 0 84px;
  background-color:var(--bg-900);
  background-image:linear-gradient(180deg,rgba(15,13,26,.72) 0%,rgba(15,13,26,.9) 62%,var(--bg-900) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(200,255,61,.22) 1px,transparent 1px);
  background-size:26px 26px;opacity:.16;pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.hero-kicker{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
  background:rgba(32,28,56,.72);border:1px solid var(--line);
  font-size:13px;color:var(--text-70);
}
.hero-kicker .pulse{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(200,255,61,.16)}
.hero h1{
  font-size:48px;font-weight:800;letter-spacing:-.5px;line-height:1.15;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--accent);position:relative}
.hero-sub{font-size:17.5px;color:var(--text-70);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px}
.stat{
  min-width:150px;padding:14px 18px;border-radius:14px;
  background:rgba(32,28,56,.72);border:1px solid var(--line);
  box-shadow:0 1px 0 var(--line);
}
.stat .k{font-size:12px;color:var(--text-45);letter-spacing:.4px;display:block;margin-bottom:2px}
.stat .v{font-family:var(--mono);font-size:18px;font-weight:700;color:var(--accent)}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:flex-end}
.hero-visual .glass{
  position:relative;border-radius:22px;padding:12px;
  background:linear-gradient(160deg,rgba(109,74,255,.22),rgba(32,28,56,.6));
  border:1px solid rgba(147,130,255,.28);
  box-shadow:0 40px 80px -40px rgba(0,0,0,.95);
}
.hero-visual img{border-radius:var(--radius-img);width:100%;height:auto}
.hero-visual .float-card{
  position:absolute;left:-8px;bottom:26px;
  padding:12px 16px;border-radius:14px;
  background:rgba(15,13,26,.92);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  font-size:13px;color:var(--text-70);min-width:150px;
}
.hero-visual .float-card strong{display:block;font-family:var(--mono);color:var(--accent);font-size:16px}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:36px;flex-wrap:wrap;
}
.section-head h2{font-size:34px;font-weight:700;margin-bottom:8px}
.section-sub{color:var(--text-70);font-size:15.5px;margin:0;max-width:660px}
.section-tag{display:inline-block;margin-bottom:12px;font-size:12.5px;letter-spacing:1.4px;color:var(--accent);font-weight:700}

/* ---------- 价值点 ---------- */
.value-main{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:34px;box-shadow:var(--shadow-card);height:100%;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.value-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(109,74,255,.5)}
.value-icon{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(109,74,255,.18);color:#B9A6FF;font-size:21px;margin-bottom:18px;
}
.value-main h3{font-size:22px;font-weight:600}
.value-main p{color:var(--text-70);font-size:15.5px;line-height:1.8;margin-bottom:18px}
.value-main .shots{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:auto}
.value-main .shots img{border-radius:12px;border:1px solid var(--line)}
.value-strip{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.value-strip:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(109,74,255,.5)}
.value-strip + .value-strip{margin-top:20px}
.value-strip .value-icon{margin-bottom:0;flex:0 0 auto;width:46px;height:46px;font-size:19px}
.value-strip h3{font-size:18.5px;margin-bottom:6px}
.value-strip p{color:var(--text-70);font-size:15px;margin:0;line-height:1.75}
.value-strip.is-light{background:var(--light-bg);border-color:rgba(26,23,48,.08)}
.value-strip.is-light h3{color:var(--light-text)}
.value-strip.is-light p{color:var(--light-text-2)}
.value-strip.is-light .value-icon{background:rgba(109,74,255,.14);color:var(--primary-hover)}
.value-strip.is-light .mini-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.value-strip.is-light .mini-tags span{
  font-size:12px;font-weight:600;color:var(--primary-hover);
  background:rgba(109,74,255,.1);padding:3px 10px;border-radius:999px;
}

/* ---------- 截图轮播 ---------- */
.shots-wrap{position:relative}
.shots-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:thin;
}
.shots-track::-webkit-scrollbar{height:6px}
.shots-track::-webkit-scrollbar-thumb{background:rgba(109,74,255,.5);border-radius:999px}
.shot{
  flex:0 0 300px;scroll-snap-align:start;
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.shot:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(109,74,255,.5)}
.shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot .cap{padding:14px 18px 18px}
.shot .cap h3{font-size:16.5px;margin-bottom:4px}
.shot .cap p{font-size:13.5px;color:var(--text-45);margin:0}
.shots-nav{display:flex;gap:10px;justify-content:flex-end;margin-bottom:8px}
.shots-nav button{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(32,28,56,.6);color:var(--text-100);display:flex;align-items:center;justify-content:center;
  transition:background .18s ease,border-color .18s ease;
}
.shots-nav button:hover{background:rgba(109,74,255,.2);border-color:var(--primary)}

/* ---------- 系统要求（浅色面板） ---------- */
.spec-panel{
  background:var(--light-bg);border-radius:22px;padding:44px;
  color:var(--light-text);box-shadow:0 26px 60px -40px rgba(0,0,0,.9);
}
.spec-panel h2{color:var(--light-text);font-size:32px}
.spec-panel .section-sub{color:var(--light-text-2)}
.spec-block h3{
  font-size:18px;color:var(--light-text);margin-bottom:16px;
  display:flex;align-items:center;gap:10px;
}
.spec-block h3 i{color:var(--primary-hover)}
.spec-list{margin:0;padding:0}
.spec-row{
  display:flex;justify-content:space-between;gap:18px;
  padding:13px 0;border-bottom:1px dashed rgba(26,23,48,.12);
}
.spec-row:last-child{border-bottom:0}
.spec-row dt{color:var(--light-text-2);font-size:14.5px;margin:0}
.spec-row dd{margin:0;font-family:var(--mono);font-size:14.5px;font-weight:600;color:var(--light-text);text-align:right}
.spec-note{margin-top:22px;font-size:13.5px;color:var(--light-text-2);background:rgba(109,74,255,.08);border-left:3px solid var(--primary);padding:12px 16px;border-radius:0 10px 10px 0}

/* ---------- 评价墙 ---------- */
.review{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);height:100%;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.review:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(109,74,255,.5)}
.review.offset{margin-top:24px}
.review .stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin-bottom:12px}
.review p{font-size:15px;color:var(--text-70);line-height:1.8;margin-bottom:18px}
.review .who{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;color:#12102A;background:linear-gradient(140deg,var(--accent),#9B7BFF);
  flex:0 0 auto;
}
.review .who .name{font-size:14.5px;font-weight:600;color:var(--text-100);display:block}
.review .who .time{font-size:12.5px;color:var(--text-45)}

/* ---------- 下载收口 ---------- */
.download-band{
  position:relative;border-radius:24px;padding:52px 44px;overflow:hidden;
  background:linear-gradient(135deg,#2A1F5C 0%,#160F33 55%,#0F0D1A 100%);
  border:1px solid rgba(147,130,255,.32);
  box-shadow:0 30px 70px -40px rgba(109,74,255,.9);
}
.download-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,255,61,.22),transparent 68%);
}
.download-band h2{font-size:32px;margin-bottom:10px;position:relative;z-index:2}
.download-band p.lead{color:var(--text-70);max-width:620px;position:relative;z-index:2}
.download-grid{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;position:relative;z-index:2}
.download-item{flex:1 1 260px;max-width:340px}
.download-item .hint{display:block;margin-top:10px;font-size:12.5px;color:var(--text-45);line-height:1.6}
.download-item .btn{width:100%}

/* ---------- 资讯列表 ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);color:var(--text-100);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(109,74,255,.5);color:var(--text-100)}
.news-thumb{position:relative;overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-45);margin-bottom:12px;flex-wrap:wrap}
.news-title{
  font-size:18px;font-weight:600;line-height:1.45;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  font-size:14.5px;color:var(--text-70);line-height:1.75;margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{margin-top:auto;font-size:13px;color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.news-card:hover .news-foot .arrow{transform:translateX(3px)}
.news-foot .arrow{transition:transform .18s ease}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:rgba(32,28,56,.4);
}
.empty-icon{
  display:inline-flex;width:44px;height:44px;border-radius:14px;align-items:center;justify-content:center;
  background:rgba(109,74,255,.18);color:#B9A6FF;font-weight:700;margin-bottom:14px;
}
.empty-state p{margin:0;color:var(--text-70)}

/* ---------- FAQ ---------- */
.faq-item{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(109,74,255,.5);box-shadow:0 1px 0 rgba(109,74,255,.3),0 20px 40px -30px rgba(0,0,0,.9)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:16px 22px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text-100);
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  position:relative;width:20px;height:20px;flex:0 0 auto;transition:transform .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--accent);border-radius:2px;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:opacity .18s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{margin:0;padding:0 22px 22px;font-size:15.5px;line-height:1.8;color:var(--text-70)}

/* ---------- 结尾 CTA ---------- */
.final-cta{
  padding:76px 0;background:linear-gradient(180deg,var(--bg-900),#120F22);
  border-top:1px solid var(--line);text-align:center;
}
.final-cta h2{font-size:32px;margin-bottom:12px}
.final-cta p{color:var(--text-70);max-width:600px;margin:0 auto 28px}
.final-cta .actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{padding-bottom:40px}
.footer-slogan{color:var(--text-70);font-size:14.5px;margin:16px 0 0;max-width:280px}
.footer-title{font-size:14px;letter-spacing:1.2px;color:var(--text-45);font-weight:700;margin-bottom:16px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--text-70);font-size:14.5px;transition:color .18s ease,transform .18s ease;display:inline-block}
.footer-links a:hover{color:var(--accent);transform:translateX(4px)}
.footer-notes p{color:var(--text-45);font-size:13.5px;margin-bottom:10px;line-height:1.75}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--text-45)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav{
    position:fixed;left:0;right:0;top:0;bottom:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;padding:96px 20px 28px;border-radius:0;border:0;
    background:rgba(15,13,26,.98);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    transform:translateY(-10px);opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;
  }
  .main-nav.is-open{opacity:1;transform:none;pointer-events:auto}
  .main-nav .nav-link{
    justify-content:flex-start;min-height:54px;border-radius:12px;padding:0 16px;
    border-bottom:1px solid var(--line);font-size:17px;
  }
  .main-nav .nav-link.is-active{background:rgba(109,74,255,.22);color:var(--accent)}
  .drawer-cta{display:flex;margin-top:auto;padding-top:20px}
  .drawer-cta .btn{width:100%}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .hero{padding:118px 0 64px}
  .hero h1{font-size:36px}
  .section{padding:72px 0}
  .section-head h2{font-size:27px}
  .spec-panel{padding:32px}
  .download-band{padding:38px 26px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .hero{padding:104px 0 54px}
  .hero h1{font-size:30px;line-height:1.25}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:10px}
  .stat{flex:1 1 100%;min-width:0}
  .hero-visual{margin-top:38px}
  .hero-visual .float-card{left:0;bottom:10px}
  .section{padding:56px 0}
  .section-head{margin-bottom:26px}
  .section-head h2{font-size:24px}
  .spec-panel{padding:24px 20px;border-radius:18px}
  .spec-panel h2{font-size:24px}
  .spec-row{flex-direction:column;gap:4px}
  .spec-row dd{text-align:left}
  .download-band{padding:30px 20px;border-radius:18px}
  .download-band h2{font-size:24px}
  .download-item{max-width:none}
  .value-main{padding:24px}
  .value-main .shots{grid-template-columns:1fr}
  .value-strip{flex-direction:column;gap:12px}
  .review.offset{margin-top:0}
  .faq-q{font-size:15.5px;padding:14px 18px;min-height:54px}
  .faq-a p{padding:0 18px 18px}
  .final-cta h2{font-size:24px}
  .final-cta .actions .btn{width:100%}
  .footer-bottom{flex-direction:column}
  .shot{flex:0 0 82%}
}

/* roulang page: category1 */
:root{
  --bg-900:#0F0D1A;
  --bg-800:#17142A;
  --bg-700:#201C38;
  --bg-input:#1B1830;
  --line:rgba(147,130,255,.18);
  --line-strong:rgba(147,130,255,.34);
  --primary:#6D4AFF;
  --primary-hover:#5636E8;
  --accent:#C8FF3D;
  --accent-2:#FF5C39;
  --ok:#24D07E;
  --warn:#FFB020;
  --text-100:#F4F2FF;
  --text-70:#B9B3D6;
  --text-45:#7D7898;
  --panel-light:#F6F5FB;
  --panel-light-text:#1A1730;
  --panel-light-sub:#5B5678;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 1px 0 var(--line),0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-hover:0 1px 0 var(--line-strong),0 26px 52px -24px rgba(0,0,0,.85);
  --container:1200px;
  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent);}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--text-100);letter-spacing:-.02em;}
h1{font-size:48px;line-height:1.15;font-weight:800;letter-spacing:-.5px;}
h2{font-size:34px;line-height:1.25;font-weight:700;}
h3{font-size:22px;line-height:1.35;font-weight:600;}
ul,ol{margin:0 0 1em;padding-left:1.1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.grid-container{max-width:var(--container);padding-left:32px;padding-right:32px;margin-left:auto;margin-right:auto;}
@media screen and (max-width:640px){
  .grid-container{padding-left:20px;padding-right:20px;}
}
::selection{background:rgba(109,74,255,.45);color:#fff;}

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease,backdrop-filter .25s ease,border-color .25s ease,height .25s ease;
}
.site-header .header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-stuck{
  background:rgba(15,13,26,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header.is-stuck .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-100);font-weight:800;font-size:18px;letter-spacing:-.3px;}
.brand:hover{color:var(--text-100);}
.brand-mark{
  width:26px;height:26px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary) 0%,#9A7BFF 45%,var(--accent) 100%);
  box-shadow:0 0 0 1px rgba(200,255,61,.25),0 8px 18px -10px rgba(109,74,255,.9);
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 6px;
  border-radius:2px;background:var(--bg-900);opacity:.85;
}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;
  height:38px;padding:0 16px;border-radius:999px;
  color:var(--text-70);font-size:15px;font-weight:600;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:rgba(109,74,255,.14);color:var(--text-100);}
.nav-link.is-active{background:var(--primary);color:#fff;}
.nav-link.is-active:hover{background:var(--primary-hover);color:#fff;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.drawer-cta{display:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  background:rgba(109,74,255,.14);
  border:1px solid var(--line);
  cursor:pointer;
  padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-100);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.3px;
  border:1.5px solid transparent;
  cursor:pointer;
  text-align:center;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--accent);color:#141127;border-color:var(--accent);box-shadow:0 12px 28px -18px rgba(200,255,61,.8);}
.btn-primary:hover{background:#D6FF66;color:#141127;transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(200,255,61,.5);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:transparent;color:var(--text-100);border-color:rgba(244,242,255,.28);}
.btn-secondary:hover{background:rgba(109,74,255,.12);border-color:var(--primary);color:var(--text-100);}
.btn-ghost{background:rgba(109,74,255,.14);color:var(--text-100);border-color:transparent;}
.btn-ghost:hover{background:rgba(109,74,255,.26);color:#fff;}
.btn-capsule{border-radius:999px;padding-left:24px;padding-right:24px;}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

/* ---------- Generic pieces ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:rgba(109,74,255,.16);
  color:#BDA9FF;font-size:12px;font-weight:600;letter-spacing:.2px;
}
.badge-accent{background:rgba(200,255,61,.14);color:var(--accent);}
.badge-hot{background:rgba(255,92,57,.16);color:#FF8464;}
.badge-ok{background:rgba(36,208,126,.14);color:var(--ok);}
.meta-dot{color:var(--text-45);}
.section{padding:96px 0;position:relative;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.6px;
  color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.lead{font-size:17px;color:var(--text-70);line-height:1.85;margin:0;}
.card{
  background:var(--bg-700);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);}
.card-body{padding:24px;}
.card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.thumb{border-radius:var(--radius-img);overflow:hidden;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;}
.text-link .arrow{transition:transform .18s ease;display:inline-block;}
.text-link:hover .arrow{transform:translateX(3px);}
.divider{height:1px;background:var(--line);border:0;margin:0;}
.mono{font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:150px 0 84px;
  background-image:linear-gradient(180deg,rgba(15,13,26,.82) 0%,rgba(15,13,26,.94) 62%,var(--bg-900) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(147,130,255,.22) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.25;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.hero-copy h1{margin-bottom:18px;}
.hero-copy .lead{max-width:640px;font-size:17.5px;color:var(--text-70);}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 26px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}
.data-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;
  background:rgba(32,28,56,.85);
  border:1px solid var(--line);
  font-size:13.5px;color:var(--text-70);
}
.data-chip strong{color:var(--text-100);font-family:var(--font-mono);font-size:13.5px;font-weight:600;}
.hero-visual{position:relative;}
.hero-visual .phone-frame{
  border-radius:24px;
  border:1px solid var(--line-strong);
  overflow:hidden;
  box-shadow:0 40px 80px -40px rgba(0,0,0,.95),0 0 0 1px rgba(200,255,61,.08);
  background:var(--bg-800);
}
.hero-visual .phone-frame img{width:100%;aspect-ratio:4/5;object-fit:cover;}
.hero-visual .float-tag{
  position:absolute;bottom:-16px;left:-16px;
  background:var(--accent);color:#141127;
  font-size:13px;font-weight:800;letter-spacing:.4px;
  padding:10px 16px;border-radius:999px;
  box-shadow:0 16px 32px -18px rgba(200,255,61,.9);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-45);margin-bottom:22px;}
.crumb a{color:var(--text-70);font-weight:500;}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:var(--text-45);}
.crumb .current{color:var(--accent);font-weight:600;}

/* ---------- Steps timeline ---------- */
.steps-band{
  margin-top:64px;
  background:rgba(23,20,42,.72);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 26px;
  position:relative;
}
.steps-track{display:flex;gap:18px;flex-wrap:wrap;}
.step-item{
  flex:1 1 200px;min-width:180px;
  padding:18px 16px;
  border-radius:14px;
  background:rgba(32,28,56,.72);
  border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.step-item:hover{border-color:var(--line-strong);transform:translateY(-4px);}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:10px;
  background:rgba(200,255,61,.14);color:var(--accent);
  font-family:var(--font-mono);font-size:14px;font-weight:700;
  margin-bottom:12px;
}
.step-item h3{font-size:16.5px;margin-bottom:6px;}
.step-item p{font-size:14px;color:var(--text-70);margin:0;line-height:1.7;}

/* ---------- Channel block ---------- */
.channel-main{
  display:flex;flex-direction:column;
  background:linear-gradient(160deg,rgba(109,74,255,.22),rgba(32,28,56,.9) 55%);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  height:100%;
}
.channel-main .thumb img{aspect-ratio:16/9;}
.channel-main .card-body{padding:28px;display:flex;flex-direction:column;gap:14px;flex:1;}
.channel-main h3{font-size:24px;margin:0;}
.channel-main p{color:var(--text-70);font-size:15px;margin:0;}
.channel-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;}
.channel-side{
  display:flex;gap:16px;align-items:flex-start;
  padding:22px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--bg-700);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  margin-bottom:18px;
}
.channel-side:last-child{margin-bottom:0;}
.channel-side:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover);}
.channel-side .icon-box{
  flex:0 0 auto;width:46px;height:46px;border-radius:14px;
  background:rgba(109,74,255,.16);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-size:19px;
}
.channel-side h3{font-size:18px;margin-bottom:6px;}
.channel-side p{font-size:14.5px;color:var(--text-70);margin:0 0 10px;}

/* ---------- Light panel ---------- */
.light-panel{
  background:var(--panel-light);
  color:var(--panel-light-text);
  border-radius:24px;
  padding:52px 48px;
  box-shadow:0 30px 60px -34px rgba(0,0,0,.9);
}
.light-panel h2,.light-panel h3{color:var(--panel-light-text);}
.light-panel .eyebrow{color:#5A3BE0;}
.light-panel .eyebrow::before{background:#5A3BE0;}
.light-panel p{color:var(--panel-light-sub);}
.def-list{display:grid;gap:14px;margin-top:8px;}
.def-row{
  display:flex;flex-wrap:wrap;gap:12px;align-items:baseline;
  padding:14px 0;
  border-bottom:1px dashed rgba(26,23,48,.14);
}
.def-row:last-child{border-bottom:0;}
.def-key{
  flex:0 0 132px;
  font-size:13px;font-weight:700;letter-spacing:.6px;
  color:#5A3BE0;
}
.def-val{font-size:15.5px;color:#2A2540;flex:1 1 200px;}
.def-val .mono{color:#1A1730;background:rgba(109,74,255,.1);padding:2px 8px;border-radius:8px;}

/* ---------- Mixed list ---------- */
.mix-list{display:grid;gap:16px;}
.mix-item{
  display:flex;gap:18px;align-items:flex-start;
  padding:20px 22px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(32,28,56,.55);
  transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.mix-item:hover{background:rgba(109,74,255,.08);transform:translateX(6px);border-color:var(--line-strong);}
.mix-item .num{
  font-family:var(--font-mono);font-size:15px;font-weight:700;
  color:var(--accent);min-width:34px;
}
.mix-item h3{font-size:17px;margin-bottom:6px;}
.mix-item p{font-size:14.5px;color:var(--text-70);margin:0;}

/* ---------- Feedback ---------- */
.feedback-grid{display:grid;gap:18px;}
.feedback-card{
  background:var(--bg-700);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease;
}
.feedback-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.feedback-card:nth-child(even){margin-top:24px;}
.stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin-bottom:10px;}
.feedback-card p{font-size:15px;color:var(--text-70);margin:0 0 16px;line-height:1.75;}
.who{display:flex;align-items:center;gap:10px;}
.avatar{
  width:36px;height:36px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(109,74,255,.22);color:#C9BAFF;
  font-weight:700;font-size:15px;
}
.who .name{font-size:14px;font-weight:600;color:var(--text-100);}
.who .time{font-size:12.5px;color:var(--text-45);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--bg-700);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.is-open{border-color:var(--line-strong);background:rgba(32,28,56,.95);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;
  padding:16px 22px;
  background:transparent;border:0;
  color:var(--text-100);
  font-size:16px;font-weight:600;text-align:left;
  cursor:pointer;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(109,74,255,.18);color:var(--accent);
  font-size:16px;line-height:1;
  transition:transform .18s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease,padding .28s ease;
  padding:0 22px;
}
.faq-item.is-open .faq-a{max-height:460px;padding:0 22px 20px;}
.faq-a p{margin:0;font-size:15.5px;line-height:1.8;color:var(--text-70);}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;
  border-radius:26px;
  padding:56px 48px;
  background-image:linear-gradient(135deg,rgba(109,74,255,.42) 0%,rgba(15,13,26,.92) 62%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border:1px solid var(--line-strong);
  box-shadow:0 0 0 1px rgba(200,255,61,.07),0 40px 80px -50px rgba(109,74,255,.9);
  overflow:hidden;
}
.cta-band h2{margin-bottom:14px;}
.cta-band p{color:var(--text-70);max-width:620px;font-size:16px;}
.cta-buttons{display:flex;flex-wrap:wrap;gap:16px;margin-top:26px;}
.cta-cell{display:flex;flex-direction:column;gap:8px;}
.cta-note{font-size:12.5px;color:var(--text-45);}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:96px;
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-grid{row-gap:34px;}
.site-footer .brand{margin-bottom:14px;}
.footer-slogan{font-size:14px;color:var(--text-70);max-width:280px;line-height:1.75;}
.footer-title{font-size:14px;font-weight:700;color:var(--text-100);letter-spacing:.6px;margin-bottom:14px;}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:var(--text-70);font-size:14.5px;display:inline-block;transition:color .18s ease,transform .18s ease;}
.footer-links a:hover{color:var(--accent);transform:translateX(4px);}
.footer-notes p{font-size:14px;color:var(--text-70);margin-bottom:10px;line-height:1.75;}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--text-45);}

/* ---------- Responsive ---------- */
@media screen and (max-width:1023px){
  h1{font-size:38px;}
  h2{font-size:28px;}
  .main-nav{
    position:fixed;
    top:0;left:0;right:0;bottom:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:96px 24px 32px;
    background:rgba(15,13,26,.98);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    overflow-y:auto;
    margin-left:0;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{
    height:auto;min-height:48px;border-radius:14px;
    justify-content:flex-start;padding:0 18px;font-size:16px;
  }
  .drawer-cta{display:block;margin-top:18px;}
  .drawer-cta .btn{width:100%;}
  .header-actions .btn-capsule{display:none;}
  .nav-toggle{display:flex;}
  .page-hero{padding:126px 0 64px;}
  .section{padding:72px 0;}
  .light-panel{padding:38px 28px;}
  .cta-band{padding:42px 28px;border-radius:20px;}
}
@media screen and (max-width:767px){
  h1{font-size:32px;}
  h2{font-size:25px;}
  h3{font-size:19px;}
  .hero-visual{margin-top:36px;}
  .hero-visual .float-tag{left:12px;bottom:-14px;}
  .feedback-card:nth-child(even){margin-top:0;}
  .steps-band{padding:22px 18px;margin-top:44px;}
  .step-item{flex:1 1 100%;}
}
@media screen and (max-width:520px){
  h1{font-size:28px;line-height:1.28;}
  h2{font-size:22px;}
  .brand-text{font-size:16px;}
  .page-hero{padding:112px 0 52px;}
  .section{padding:56px 0;}
  .light-panel{padding:28px 20px;border-radius:18px;}
  .cta-buttons .cta-cell,.cta-buttons .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: article */
:root{
  --bg-900:#0F0D1A;
  --bg-800:#17142A;
  --bg-700:#201C38;
  --bg-750:#1B1830;
  --line:rgba(147,130,255,.18);
  --line-strong:rgba(147,130,255,.34);
  --primary:#6D4AFF;
  --primary-hover:#5636E8;
  --accent:#C8FF3D;
  --accent-2:#FF5C39;
  --ok:#24D07E;
  --warn:#FFB020;
  --text-100:#F4F2FF;
  --text-70:#B9B3D6;
  --text-45:#7D7898;
  --light-bg:#F6F5FB;
  --light-text:#1A1730;
  --light-text-2:#5B5678;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 1px 0 var(--line), 0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-hover:0 1px 0 var(--line-strong), 0 26px 52px -26px rgba(0,0,0,.85);
  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img)}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,border-color .18s ease}
a:hover{color:var(--accent)}
button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(200,255,61,.3);color:#0F0D1A}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;margin-left:auto;margin-right:auto}
@media (max-width:767px){.grid-container{padding-left:20px;padding-right:20px}}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:76px;display:flex;align-items:center;
  background:transparent;
  transition:height .22s ease,background .22s ease,box-shadow .22s ease,border-color .22s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  height:64px;
  background:rgba(15,13,26,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
  box-shadow:0 20px 44px -32px rgba(0,0,0,.95);
}
.header-inner{width:100%;display:flex;align-items:center;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-100);font-weight:800;letter-spacing:-.3px;flex:0 0 auto}
.brand:hover{color:var(--text-100)}
.brand-mark{
  position:relative;width:26px;height:26px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),#9B7BFF 58%,var(--accent));
  box-shadow:0 0 0 1px rgba(200,255,61,.32),0 0 20px -6px rgba(200,255,61,.55);
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;width:8px;height:8px;border-radius:2px;
  transform:translate(-50%,-50%) rotate(45deg);background:var(--bg-900);
}
.brand-text{font-size:18px;white-space:nowrap}
.main-nav{
  display:flex;align-items:center;gap:4px;margin-left:auto;
  padding:6px;border-radius:999px;border:1px solid var(--line);
  background:rgba(32,28,56,.55);
}
.nav-link{
  padding:9px 16px;border-radius:999px;font-size:15px;font-weight:600;
  color:var(--text-70);white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:rgba(109,74,255,.14);color:var(--text-100)}
.nav-link.is-active{background:var(--primary);color:#fff}
.nav-link.is-active:hover{background:var(--primary-hover);color:#fff}
.drawer-cta{display:none}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(32,28,56,.7);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .18s ease,background .18s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-100);transition:transform .22s ease,opacity .22s ease}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(109,74,255,.16)}
.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)}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.3px;line-height:1.2;cursor:pointer;
  text-decoration:none;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn i{font-size:14px}
.btn-primary{background:var(--accent);color:#12100F;border-color:var(--accent)}
.btn-primary:hover{background:#D8FF6B;color:#12100F;transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(200,255,61,.5)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-outline{background:transparent;color:var(--text-100);border-color:rgba(244,242,255,.28)}
.btn-outline:hover{border-color:var(--primary);background:rgba(109,74,255,.12);color:#fff;transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-hot{background:var(--accent-2);color:#fff;border-color:var(--accent-2)}
.btn-hot:hover{background:#FF7455;color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px -14px rgba(255,92,57,.65)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-lg{padding:16px 30px;font-size:16px}
.btn-block{width:100%}
.btn-capsule{border-radius:999px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ===== Badges ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.2px;
  background:rgba(109,74,255,.16);color:#BCB0FF;border:1px solid rgba(109,74,255,.3);
}
.badge-accent{background:rgba(200,255,61,.14);color:var(--accent);border-color:rgba(200,255,61,.32)}
.badge-hot{background:rgba(255,92,57,.14);color:#FF8C6D;border-color:rgba(255,92,57,.3)}

/* ===== Page banner ===== */
.page-banner{
  position:relative;
  padding:150px 0 60px;
  background-image:linear-gradient(180deg,rgba(15,13,26,.78) 0%,rgba(15,13,26,.94) 62%,var(--bg-900) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.22;
  background-image:radial-gradient(rgba(147,130,255,.5) 1px,transparent 1px);
  background-size:22px 22px;
}
.page-banner .grid-container{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-45);margin-bottom:22px}
.crumbs a{color:var(--text-70)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:rgba(125,120,152,.7)}
.crumbs .now{color:var(--text-100);max-width:44ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-title{
  font-size:48px;line-height:1.15;font-weight:800;letter-spacing:-.5px;
  color:var(--text-100);max-width:22ch;margin-bottom:20px;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:13px;color:var(--text-45)}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(125,120,152,.7)}
.post-meta .meta-strong{color:var(--text-70)}
.post-tools{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);background:rgba(32,28,56,.6);color:var(--text-70);
  font-size:13px;font-weight:600;cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.share-btn:hover{border-color:var(--line-strong);color:var(--text-100);background:rgba(109,74,255,.16)}

/* ===== Article layout ===== */
.article-section{padding:64px 0 8px}
.article-layout{gap:0}
.content-col{padding-right:24px}
.aside-col{padding-left:24px}
.post-panel{
  background:var(--bg-800);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:40px 44px 48px;
  box-shadow:var(--shadow-card);
}
.lead-note{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 20px;border-radius:14px;margin-bottom:26px;
  background:rgba(109,74,255,.12);border:1px solid rgba(109,74,255,.26);
  font-size:14.5px;line-height:1.7;color:var(--text-70);
}
.lead-note i{color:var(--accent);margin-top:4px}
.entry{max-width:760px}
.entry p{font-size:16.5px;line-height:1.85;color:var(--text-70);margin-bottom:1.1em}
.entry > p:first-of-type{font-size:17.5px;color:#D6D1EE}
.entry h2{
  position:relative;margin:46px 0 18px;padding-left:16px;
  font-size:34px;line-height:1.25;font-weight:700;color:var(--text-100);
}
.entry h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:3px;background:var(--primary)}
.entry h3{margin:32px 0 14px;font-size:22px;line-height:1.35;font-weight:600;color:var(--text-100)}
.entry h4{margin:24px 0 12px;font-size:17px;font-weight:700;color:var(--text-100)}
.entry ul,.entry ol{margin:0 0 1.3em;padding-left:1.45em;color:var(--text-70)}
.entry ul{list-style:disc}
.entry ol{list-style:decimal}
.entry li{margin-bottom:.6em;line-height:1.8}
.entry ul li::marker{color:var(--primary)}
.entry ol li::marker{color:var(--accent);font-weight:700}
.entry blockquote{
  margin:1.6em 0;padding:20px 24px;border-radius:14px;
  background:var(--light-bg);color:var(--light-text-2);
  border-left:4px solid var(--primary);font-size:16px;line-height:1.8;
}
.entry blockquote p{color:var(--light-text-2);font-size:16px;margin-bottom:.6em}
.entry blockquote p:last-child{margin-bottom:0}
.entry img{margin:1.5em 0;border-radius:var(--radius-img);border:1px solid var(--line)}
.entry a{color:var(--accent);border-bottom:1px dashed rgba(200,255,61,.4)}
.entry a:hover{color:#fff;border-bottom-color:#fff}
.entry code{
  font-family:var(--font-mono);font-size:14px;padding:2px 7px;border-radius:8px;
  background:var(--bg-750);border:1px solid var(--line);color:var(--accent);
}
.entry pre{
  margin:1.4em 0;padding:18px 20px;border-radius:14px;overflow:auto;
  background:#141126;border:1px solid var(--line);
}
.entry pre code{background:none;border:0;padding:0;color:#CFC8F5}
.entry table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px}
.entry th,.entry td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.entry th{background:rgba(109,74,255,.1);color:var(--text-100);font-weight:600}
.entry td{color:var(--text-70)}
.entry hr{border:0;height:1px;background:var(--line);margin:2.2em 0}
.entry figure{margin:1.6em 0}
.entry figcaption{font-size:13px;color:var(--text-45);text-align:center;margin-top:10px}

.empty-state{
  padding:56px 24px;border-radius:var(--radius-card);text-align:center;
  border:1px dashed var(--line-strong);background:rgba(32,28,56,.5);
}
.empty-icon{
  width:64px;height:64px;border-radius:20px;margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(109,74,255,.16);color:#BCB0FF;font-size:24px;
}
.empty-title{font-size:22px;font-weight:700;color:var(--text-100);margin-bottom:10px}
.empty-desc{font-size:15px;color:var(--text-45);max-width:44ch;margin:0 auto 22px;line-height:1.8}

/* ===== Aside ===== */
.side-sticky{position:sticky;top:96px;display:grid;gap:20px}
.side-card{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.side-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.side-card h3{font-size:17px;font-weight:700;color:var(--text-100);margin-bottom:6px}
.side-card p{font-size:14px;line-height:1.75;color:var(--text-45)}
.side-thumb{border-radius:12px;overflow:hidden;margin-bottom:18px;border:1px solid var(--line)}
.side-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.side-facts{display:grid;gap:10px;margin:16px 0 20px}
.side-facts div{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--text-45);padding-bottom:10px;border-bottom:1px solid var(--line)}
.side-facts div:last-child{border-bottom:0;padding-bottom:0}
.side-facts strong{color:var(--text-100);font-family:var(--font-mono);font-weight:600;font-size:13.5px}
.side-links{display:grid;gap:6px;margin-top:14px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:12px;font-size:14.5px;font-weight:600;
  color:var(--text-70);border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,padding-left .18s ease;
}
.side-links a:hover{background:rgba(109,74,255,.14);color:var(--text-100);border-color:var(--line);padding-left:16px}
.side-links a i{font-size:12px;color:var(--primary)}
.side-note{font-size:12.5px;color:var(--text-45);margin-top:14px;line-height:1.7}

/* ===== Post nav + related ===== */
.post-nav{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.related-section{padding:72px 0 8px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.sec-title{font-size:34px;line-height:1.25;font-weight:700;color:var(--text-100);letter-spacing:-.3px}
.sec-sub{font-size:15px;color:var(--text-45);margin-top:10px;max-width:62ch;line-height:1.8}
.sec-more{font-size:14.5px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.sec-more i{transition:transform .18s ease}
.sec-more:hover i{transform:translateX(3px)}
.card{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(109,74,255,.5);box-shadow:var(--shadow-hover)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,13,26,0) 45%,rgba(15,13,26,.72) 100%)}
.card-media .badge{position:absolute;left:14px;top:14px;z-index:2}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:18px;line-height:1.45;font-weight:700;color:var(--text-100)}
.card-title a{color:inherit}
.card-title a:hover{color:var(--accent)}
.card-text{font-size:14.5px;line-height:1.75;color:var(--text-45)}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--text-45)}
.card-foot .go{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card:hover .card-foot .go{color:var(--accent)}
.related-grid{gap:0}

/* ===== FAQ ===== */
.faq-section{padding:76px 0 8px}
.faq-list{display:grid;gap:14px;max-width:860px}
.faq-item{
  background:var(--bg-800);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-color:rgba(109,74,255,.5);background:var(--bg-700)}
.faq-q{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 22px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-100);
}
.faq-q i{color:var(--primary);transition:transform .18s ease;flex:0 0 auto}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 22px 22px;font-size:15.5px;line-height:1.8;color:var(--text-70);margin:0}

/* ===== CTA band ===== */
.cta-band{padding:88px 0}
.cta-inner{
  position:relative;overflow:hidden;
  border-radius:24px;border:1px solid rgba(109,74,255,.45);
  background:linear-gradient(135deg,#241A55 0%,#3A1E6B 48%,#1B1140 100%);
  padding:56px 48px;text-align:center;
  box-shadow:0 1px 0 rgba(147,130,255,.3),0 40px 80px -44px rgba(0,0,0,.95);
}
.cta-inner::before{
  content:"";position:absolute;inset:0;opacity:.2;pointer-events:none;
  background-image:radial-gradient(rgba(200,255,61,.6) 1px,transparent 1px);
  background-size:26px 26px;
}
.cta-inner > *{position:relative;z-index:2}
.cta-title{font-size:36px;line-height:1.25;font-weight:800;letter-spacing:-.4px;color:#fff;margin-bottom:14px}
.cta-text{font-size:16px;line-height:1.85;color:rgba(244,242,255,.78);max-width:60ch;margin:0 auto 30px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
.cta-item{display:flex;flex-direction:column;align-items:center;gap:10px;min-width:210px}
.cta-item .hint{font-size:12.5px;color:rgba(244,242,255,.6)}

/* ===== Footer ===== */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:72px 0 28px;margin-top:24px}
.footer-grid{gap:0}
.footer-grid > [class*="cell"]{padding-left:16px;padding-right:16px;padding-bottom:28px}
.footer-slogan{margin-top:16px;font-size:14.5px;line-height:1.8;color:var(--text-45);max-width:30ch}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.4px;color:var(--text-100);margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--text-70);display:inline-block;transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:var(--accent);transform:translateX(4px)}
.footer-notes p{font-size:13.5px;line-height:1.85;color:var(--text-45);margin-bottom:10px}
.footer-bottom{
  margin-top:16px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
}
.footer-bottom p{font-size:12.5px;color:var(--text-45);margin:0}

/* ===== Responsive ===== */
@media (max-width:1279px){
  .post-title{font-size:42px}
  .entry h2,.sec-title{font-size:30px}
}
@media (max-width:1023px){
  .header-actions .btn-capsule{display:none}
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;top:0;right:0;left:auto;bottom:0;z-index:95;
    width:min(86vw,340px);height:100vh;height:100dvh;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:96px 20px 28px;margin:0;border-radius:0;
    border:0;border-left:1px solid var(--line);
    background:var(--bg-800);
    transform:translateX(105%);
    transition:transform .28s ease;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:12px;min-height:48px;display:flex;align-items:center}
  .drawer-cta{display:block;margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
  .drawer-cta .btn{width:100%}
  .content-col{padding-right:12px}
  .aside-col{padding-left:12px;margin-top:36px}
  .side-sticky{position:static}
  .post-panel{padding:30px 26px 34px}
  .entry h2{font-size:26px;margin-top:36px}
  .cta-inner{padding:44px 26px}
  .cta-title{font-size:28px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:767px){
  .site-header{height:64px}
  .site-header.is-stuck{height:60px}
  .brand-text{font-size:16px}
  .page-banner{padding:118px 0 44px}
  .post-title{font-size:30px;line-height:1.25;max-width:none}
  .post-meta{font-size:12.5px}
  .article-section{padding:44px 0 8px}
  .post-panel{padding:24px 20px 28px}
  .entry p{font-size:16px}
  .entry h2{font-size:23px}
  .entry h3{font-size:19px}
  .sec-title{font-size:24px}
  .related-section,.faq-section{padding:52px 0 8px}
  .cta-band{padding:56px 0}
  .cta-inner{padding:36px 20px;border-radius:18px}
  .cta-title{font-size:24px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-item{min-width:0}
  .cta-item .btn{width:100%}
  .post-nav{flex-direction:column}
  .post-nav .btn{width:100%}
  .site-footer{padding:52px 0 24px}
  .footer-grid > [class*="cell"]{padding-left:0;padding-right:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:380px){
  .brand-text{font-size:15px}
  .post-title{font-size:26px}
}

/* roulang page: category3 */
:root{
  --bg-900:#0F0D1A;
  --bg-800:#17142A;
  --bg-700:#201C38;
  --bg-input:#1B1830;
  --line:rgba(147,130,255,.18);
  --primary:#6D4AFF;
  --primary-hover:#5636E8;
  --accent:#C8FF3D;
  --accent-2:#FF5C39;
  --text-100:#F4F2FF;
  --text-70:#B9B3D6;
  --text-45:#7D7898;
  --light-panel:#F6F5FB;
  --light-text:#1A1730;
  --light-text-2:#5B5678;
  --ok:#24D07E;
  --warn:#FFB020;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 1px 0 var(--line), 0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-hover:0 1px 0 rgba(109,74,255,.4), 0 26px 52px -22px rgba(0,0,0,.85);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--text-100);font-weight:700;letter-spacing:-.2px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.grid-container{max-width:var(--container);margin:0 auto;padding-left:32px;padding-right:32px;width:100%}
.grid-container.full{max-width:100%;padding-left:0;padding-right:0}

/* ============ Header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;height:76px;
  display:flex;align-items:center;
  background:transparent;
  transition:height .22s ease, background .22s ease, border-color .22s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  height:64px;background:rgba(15,13,26,.92);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:100%}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-100);font-weight:800;letter-spacing:-.3px}
.brand:hover{color:var(--text-100)}
.brand-mark{
  width:28px;height:28px;border-radius:9px;flex:0 0 28px;
  background:linear-gradient(135deg,var(--primary) 0%,#8E6BFF 45%,var(--accent) 100%);
  box-shadow:0 0 0 1px rgba(200,255,61,.35),0 8px 22px -10px rgba(109,74,255,.9);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px 8px;border-radius:3px;
  background:rgba(15,13,26,.85);
}
.brand-text{font-size:18px;white-space:nowrap}
.main-nav{
  display:flex;align-items:center;gap:4px;
  background:rgba(32,28,56,.62);
  border:1px solid var(--line);
  border-radius:999px;padding:6px;
}
.nav-link{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 16px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--text-70);
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:rgba(109,74,255,.14);color:var(--text-100)}
.nav-link.is-active{background:var(--primary);color:#fff}
.drawer-cta{display:none}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:12px;
  background:rgba(32,28,56,.7);border:1px solid var(--line);
  cursor:pointer;padding:0;position:relative;
}
.nav-toggle span{
  display:block;width:20px;height:2px;margin:4px auto;border-radius:2px;
  background:var(--text-100);transition:transform .22s ease,opacity .18s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.3px;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  text-align:center;
}
.btn-primary{background:var(--accent);color:#12101F;border-color:var(--accent)}
.btn-primary:hover{background:#D6FF66;color:#12101F;transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(200,255,61,.5)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text-100);border-color:rgba(244,242,255,.28)}
.btn-ghost:hover{background:rgba(109,74,255,.12);border-color:var(--primary);color:var(--text-100);transform:translateY(-2px)}
.btn-alt{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-alt:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(109,74,255,.9)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-capsule{border-radius:999px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:rgba(109,74,255,.16);color:#B9A6FF;
  font-size:12px;font-weight:600;letter-spacing:.2px;
}
.badge-accent{background:rgba(200,255,61,.14);color:var(--accent)}
.badge-red{background:rgba(255,92,57,.16);color:#FF8A6E}
.dot-sep{color:var(--text-45);margin:0 8px}

/* ============ Page hero ============ */
.page-hero{
  position:relative;padding:150px 0 76px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(15,13,26,.72) 0%,rgba(15,13,26,.92) 58%,var(--bg-900) 100%),
                   url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.22;
  background-image:radial-gradient(rgba(200,255,61,.5) 1px,transparent 1px);
  background-size:26px 26px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.page-hero .grid-container{position:relative;z-index:2}
.breadcrumb{margin-bottom:22px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-45)}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--text-45)}
.breadcrumb a{color:var(--text-70)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb [aria-current="page"]{color:var(--text-100)}
.page-hero h1{
  font-size:48px;line-height:1.15;font-weight:800;letter-spacing:-.5px;
  margin:18px 0 20px;max-width:14em;
}
.hero-lead{font-size:17px;line-height:1.85;color:var(--text-70);max-width:620px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px}
.hero-facts li{
  display:flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:12px;
  background:rgba(32,28,56,.7);border:1px solid var(--line);
  font-size:14px;color:var(--text-70);
}
.hero-facts strong{color:var(--accent);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700}
.hero-visual{
  margin:0;position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.hero-visual img{width:100%;height:340px;object-fit:cover}
.hero-visual figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;
  font-size:13px;color:var(--text-70);
  background:linear-gradient(180deg,rgba(15,13,26,0),rgba(15,13,26,.92));
}

/* ============ Sections ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-light{background:var(--light-panel);color:var(--light-text)}
.section-light h2,.section-light h3{color:var(--light-text)}
.section-light p{color:var(--light-text-2)}
.section-dark{background:var(--bg-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:36px}
.section-kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:2px;
  color:var(--accent);margin-bottom:14px;
}
.section-head h2{font-size:34px;line-height:1.25;font-weight:700;margin-bottom:14px}
.section-head p{color:var(--text-70);font-size:16px;margin:0}
.section-light .section-head p{color:var(--light-text-2)}
.section-light .section-kicker{color:var(--primary)}

/* ============ Magazine layout ============ */
.mag-feature{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);height:100%;
  display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mag-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(109,74,255,.5)}
.mag-feature .thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.mag-feature .thumb img{width:100%;height:100%;object-fit:cover}
.mag-feature .thumb .badge{position:absolute;top:14px;left:14px;background:rgba(15,13,26,.82);color:var(--accent)}
.mag-feature .body{padding:26px 26px 30px}
.mag-feature h3{font-size:24px;line-height:1.35;margin-bottom:12px}
.mag-feature p{color:var(--text-70);font-size:15px;line-height:1.75;margin:0 0 18px}
.mag-meta{display:flex;align-items:center;font-size:13px;color:var(--text-45)}

.mag-side{display:flex;flex-direction:column;gap:16px;height:100%}
.mag-mini{
  display:flex;gap:14px;padding:16px;
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
  flex:1;
}
.mag-mini:hover{transform:translateY(-3px);border-color:rgba(109,74,255,.5);background:#241F41}
.mag-mini .mini-thumb{flex:0 0 96px;height:76px;border-radius:12px;overflow:hidden}
.mag-mini .mini-thumb img{width:100%;height:100%;object-fit:cover}
.mag-mini h4{font-size:16px;line-height:1.45;margin-bottom:6px}
.mag-mini p{font-size:13.5px;line-height:1.65;color:var(--text-70);margin:0 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mag-mini .mag-meta{font-size:12px}

/* ============ Mixed list ============ */
.mix-panel{
  background:var(--bg-800);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px;height:100%;
}
.numbered li{
  display:flex;gap:16px;padding:18px 14px;border-radius:12px;
  border-bottom:1px solid var(--line);
  transition:background .18s ease,padding-left .18s ease;
}
.numbered li:last-child{border-bottom:none}
.numbered li:hover{background:rgba(109,74,255,.08);padding-left:22px}
.numbered .num{
  flex:0 0 34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(200,255,61,.14);color:var(--accent);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700;font-size:15px;
}
.numbered h4{font-size:17px;margin-bottom:6px}
.numbered p{font-size:14.5px;color:var(--text-70);margin:0;line-height:1.72}

.quick-card{
  background:linear-gradient(160deg,#241F41 0%,#1A1730 100%);
  border:1px solid rgba(109,74,255,.42);border-radius:var(--radius-card);
  padding:28px;height:100%;
}
.quick-card h3{font-size:20px;margin-bottom:8px}
.quick-card > p{font-size:14.5px;color:var(--text-70);margin-bottom:20px}
.dl-def{border-top:1px solid var(--line)}
.dl-def .row{
  display:flex;align-items:flex-start;gap:16px;padding:14px 0;
  border-bottom:1px dashed rgba(147,130,255,.22);
}
.dl-def .k{flex:0 0 96px;font-size:13.5px;color:var(--text-45)}
.dl-def .v{font-size:14.5px;color:var(--text-100);flex:1}
.dl-def .v em{font-style:normal;color:var(--accent)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tag{
  padding:6px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(109,74,255,.16);color:#BCA9FF;border:1px solid rgba(109,74,255,.28);
}

/* ============ Steps timeline ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step{
  position:relative;padding:26px 22px;
  background:var(--light-panel);border-radius:var(--radius-card);
  border:1px solid rgba(26,23,48,.08);
  box-shadow:0 14px 30px -26px rgba(26,23,48,.6);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:0 22px 40px -26px rgba(26,23,48,.55)}
.step .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;margin-bottom:14px;
  background:var(--primary);color:#fff;font-weight:700;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.step h3{font-size:18px;color:var(--light-text);margin-bottom:8px}
.step p{font-size:14.5px;color:var(--light-text-2);margin:0;line-height:1.72}

/* ============ Stats ============ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{
  padding:24px;border-radius:var(--radius-card);
  background:var(--bg-700);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.stat:hover{border-color:rgba(200,255,61,.42);transform:translateY(-4px)}
.stat .val{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:34px;font-weight:700;color:var(--accent);line-height:1.1;letter-spacing:-1px;
}
.stat .val small{font-size:15px;margin-left:4px;color:var(--text-70);font-family:inherit}
.stat .lab{display:block;margin-top:10px;font-size:14px;color:var(--text-70)}

/* ============ FAQ ============ */
.faq-wrap{max-width:760px;margin:0 auto}
.faq-item{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease;
}
.faq-item.is-open{border-color:rgba(109,74,255,.55)}
.faq-q{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text-100);line-height:1.5;
}
.faq-q:hover{color:var(--accent)}
.faq-q .ico{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;position:relative;
  background:rgba(109,74,255,.18);transition:transform .18s ease;
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--accent);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .ico::before{width:12px;height:2px}
.faq-q .ico::after{width:2px;height:12px;transition:opacity .18s ease}
.faq-item.is-open .faq-q .ico{transform:rotate(180deg)}
.faq-item.is-open .faq-q .ico::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a .inner{padding:0 22px 20px;font-size:15.5px;line-height:1.8;color:var(--text-70)}
.faq-a .inner p{margin:0 0 .8em}
.faq-a .inner p:last-child{margin-bottom:0}

/* ============ CTA band ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#2A1F5C 0%,#1A1730 52%,#120F26 100%);
  border-top:1px solid rgba(109,74,255,.4);border-bottom:1px solid rgba(109,74,255,.4);
  padding:78px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.2;pointer-events:none;
  background-image:radial-gradient(rgba(200,255,61,.6) 1px,transparent 1px);
  background-size:30px 30px;
}
.cta-band .grid-container{position:relative;z-index:2}
.cta-band h2{font-size:34px;line-height:1.25;margin-bottom:14px;max-width:16em}
.cta-band p{color:var(--text-70);max-width:620px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ Footer ============ */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:66px 0 28px;margin-top:0}
.footer-grid{gap:0}
.footer-grid .cell{margin-bottom:34px}
.footer-slogan{margin-top:16px;font-size:14px;color:var(--text-70);max-width:26em;line-height:1.75}
.footer-title{font-size:14px;font-weight:700;color:var(--text-100);letter-spacing:1px;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{
  display:inline-block;font-size:14.5px;color:var(--text-70);
  transition:color .18s ease,transform .18s ease;
}
.footer-links a:hover{color:var(--accent);transform:translateX(4px)}
.footer-notes p{font-size:13.5px;color:var(--text-45);line-height:1.8;margin:0 0 10px}
.footer-bottom{
  margin-top:12px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--text-45)}

/* ============ Responsive ============ */
@media (max-width:1279px){
  .page-hero h1{font-size:42px}
  .section{padding:76px 0}
}
@media (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px}
  .site-header{background:rgba(15,13,26,.94);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
  .main-nav{
    position:fixed;top:0;left:0;right:0;bottom:0;z-index:55;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:6px;padding:96px 24px 32px;border-radius:0;border:0;
    background:rgba(15,13,26,.98);
    transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
    overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .nav-link{width:100%;min-height:48px;justify-content:flex-start;padding:12px 18px;border-radius:12px;font-size:16.5px}
  .nav-link.is-active{background:rgba(109,74,255,.22);color:var(--accent)}
  .drawer-cta{display:block;margin-top:18px}
  .drawer-cta .btn{width:100%}
  .header-actions{z-index:60;position:relative}
  .header-actions .btn{display:none}
  .nav-toggle{display:block}
  .page-hero{padding:126px 0 62px}
  .page-hero h1{font-size:34px;max-width:100%}
  .hero-lead{font-size:16px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .section{padding:62px 0}
  .section-head h2{font-size:27px}
  .cta-band h2{font-size:27px}
  .hero-visual img{height:280px}
}
@media (max-width:767px){
  .brand-text{font-size:16px}
  .page-hero{padding:118px 0 52px}
  .page-hero h1{font-size:30px;line-height:1.25}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:8px}
  .hero-facts li{font-size:13px;padding:8px 12px}
  .mag-mini{flex-direction:column}
  .mag-mini .mini-thumb{flex:0 0 auto;width:100%;height:150px}
  .mix-panel{padding:22px}
  .steps{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr;gap:12px}
  .stat .val{font-size:26px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .grid-container{padding-left:18px;padding-right:18px}
  .stats{grid-template-columns:1fr}
  .section-head h2{font-size:23px}
  .mag-feature .body{padding:20px}
  .mag-feature h3{font-size:20px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root{
  --bg-900:#0F0D1A;
  --bg-800:#17142A;
  --bg-700:#201C38;
  --line:rgba(147,130,255,.18);
  --primary:#6D4AFF;
  --primary-hover:#5636E8;
  --accent:#C8FF3D;
  --accent-2:#FF5C39;
  --text-100:#F4F2FF;
  --text-70:#B9B3D6;
  --text-45:#7D7898;
  --light-bg:#F6F5FB;
  --light-card:#FFFFFF;
  --light-line:#E4E1F1;
  --light-1:#1A1730;
  --light-2:#5B5678;
  --success:#24D07E;
  --warn:#FFB020;
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 1px 0 var(--line), 0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-hover:0 1px 0 rgba(147,130,255,.34), 0 26px 52px -22px rgba(0,0,0,.85);
  --shadow-light:0 14px 34px -26px rgba(26,23,48,.55);
  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --space-section:96px;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,p,ul,ol,dl,dt,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease}
button,input,textarea,select{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
::selection{background:rgba(109,74,255,.45);color:#fff}

/* ===== 容器 ===== */
.grid-container{
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:32px;
  padding-right:32px;
  width:100%;
}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(15,13,26,0);
  transition:background-color .28s ease,box-shadow .28s ease,border-color .28s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(15,13,26,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:76px;
  transition:height .28s ease;
}
.site-header.is-stuck .header-inner{height:64px}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-100);
  font-weight:800;
  font-size:17px;
  letter-spacing:-.2px;
  flex:0 0 auto;
}
.brand:hover{color:var(--text-100)}
.brand-mark{
  position:relative;
  width:26px;height:26px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:inset 0 0 0 1px rgba(200,255,61,.35);
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;inset:7px;
  border-radius:4px;
  background:var(--bg-900);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  padding:10px 16px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:600;
  color:var(--text-70);
  white-space:nowrap;
}
.nav-link:hover{background:rgba(109,74,255,.14);color:var(--text-100)}
.nav-link.is-active{background:var(--primary);color:#fff}
.nav-link.is-active:hover{background:var(--primary-hover);color:#fff}
.drawer-cta{display:none}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:46px;height:46px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(32,28,56,.7);
  padding:0;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:13px;right:13px;
  height:2px;
  background:var(--text-100);
  border-radius:2px;
  transition:transform .24s ease,opacity .24s ease,top .24s ease;
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:22px}
.nav-toggle span:nth-child(3){top:29px}
.nav-toggle.is-open span:nth-child(1){top:22px;transform:rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:22px;transform:rotate(-45deg)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--r-btn);
  font-size:15.5px;
  font-weight:600;
  letter-spacing:.3px;
  border:1px solid transparent;
  text-align:center;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn-primary{
  background:var(--accent);
  color:#14111F;
  box-shadow:0 10px 26px -18px rgba(200,255,61,.75);
}
.btn-primary:hover{
  background:#D6FF6A;
  color:#14111F;
  transform:translateY(-2px);
  box-shadow:0 12px 28px -12px rgba(200,255,61,.5);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  border:1.5px solid rgba(244,242,255,.28);
  color:var(--text-100);
}
.btn-ghost:hover{
  border-color:var(--primary);
  background:rgba(109,74,255,.12);
  color:var(--text-100);
  transform:translateY(-2px);
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-capsule{border-radius:999px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ===== 徽章与标签 ===== */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.4px;
  background:rgba(109,74,255,.16);
  color:#B9A6FF;
  border:1px solid rgba(109,74,255,.32);
}
.badge-accent{
  background:rgba(200,255,61,.14);
  color:var(--accent);
  border-color:rgba(200,255,61,.35);
}
.badge-light{
  background:#EFEBFF;
  color:var(--primary);
  border-color:#DFD7FF;
}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:1.6px;
  color:var(--accent);
  margin-bottom:14px;
}

/* ===== 通用板块 ===== */
.section{padding:var(--space-section) 0}
.section-head{max-width:780px;margin-bottom:42px}
.section-head h2{font-size:34px;line-height:1.28;font-weight:700;letter-spacing:-.3px}
.section-lead{margin-top:14px;color:var(--text-70);font-size:15.5px;line-height:1.9}
.col-gap{margin-bottom:30px}

/* ===== 内页首屏 ===== */
.page-hero{
  position:relative;
  padding:56px 0 84px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(158deg,rgba(15,13,26,.88) 0%,rgba(15,13,26,.94) 52%,rgba(23,20,42,.96) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(200,255,61,.12) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.5;
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--text-45);
  margin-bottom:22px;
}
.crumbs a{color:var(--text-70)}
.crumbs a:hover{color:var(--accent)}
.crumb-sep{color:var(--text-45)}
.page-hero h1{
  margin-top:18px;
  font-size:48px;
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.5px;
  max-width:760px;
}
.hero-lead{
  margin-top:20px;
  max-width:640px;
  color:var(--text-70);
  font-size:17px;
  line-height:1.9;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.hero-stats li{
  background:rgba(32,28,56,.82);
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px 18px;
  min-width:148px;
}
.stat-k{display:block;font-size:12px;letter-spacing:1px;color:var(--text-45)}
.stat-v{display:block;font-family:var(--font-mono);font-size:16px;color:var(--accent);margin-top:2px}
.hero-shot{
  margin:0;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-700);
  box-shadow:var(--shadow-card);
  transition:transform .24s ease,box-shadow .24s ease;
}
.hero-shot:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-shot figcaption{padding:12px 16px;font-size:13px;color:var(--text-45);border-top:1px solid var(--line)}

/* ===== 浅色反差区 ===== */
.light-zone{
  background:var(--light-bg);
  color:var(--light-1);
  padding:76px 0 88px;
}
.light-zone h2,.light-zone h3{color:var(--light-1)}
.light-zone p{color:var(--light-2)}
.light-zone .eyebrow{color:var(--primary)}

.anchor-col{position:sticky;top:104px}
.anchor-title{
  font-size:12.5px;
  font-weight:700;
  letter-spacing:1.6px;
  color:var(--light-2);
  margin-bottom:14px;
}
.anchor-list li{margin-bottom:8px}
.anchor-list a{
  display:block;
  padding:12px 16px;
  border-radius:12px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  color:var(--light-2);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.anchor-list a:hover{
  background:var(--light-card);
  color:var(--primary);
  border-color:rgba(109,74,255,.3);
}
.anchor-list a.is-active{
  background:var(--light-card);
  color:var(--primary);
  border-color:rgba(109,74,255,.36);
  box-shadow:var(--shadow-light);
}
.anchor-tip{
  margin-top:22px;
  background:var(--light-card);
  border:1px solid var(--light-line);
  border-radius:var(--r-card);
  padding:20px;
}
.anchor-tip-title{
  font-size:15px;
  font-weight:700;
  color:var(--light-1);
  margin-bottom:8px;
}
.anchor-tip p{font-size:14px;line-height:1.8;margin-bottom:16px}

.tl-group{margin-bottom:64px}
.tl-group:last-child{margin-bottom:0}
.tl-head{margin-bottom:28px}
.tl-head h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.2px}
.tl-head p{margin-top:10px;font-size:15px;line-height:1.8;max-width:640px}

.timeline{position:relative;padding-left:28px}
.timeline::before{
  content:"";
  position:absolute;
  left:6px;top:10px;bottom:12px;
  width:2px;
  background:linear-gradient(180deg,rgba(109,74,255,.55),rgba(109,74,255,.08));
  border-radius:2px;
}
.tl-item{position:relative;margin-bottom:26px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:-28px;
  top:26px;
  width:14px;height:14px;
  border-radius:50%;
  background:#fff;
  border:3px solid var(--primary);
  box-shadow:0 0 0 4px rgba(109,74,255,.12);
}
.tl-date{
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--primary);
  margin-bottom:10px;
}
.tl-card{
  background:var(--light-card);
  border:1px solid var(--light-line);
  border-radius:var(--r-card);
  padding:22px 24px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-light);
  border-color:rgba(109,74,255,.35);
}
.tl-card-head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-bottom:10px;
}
.tl-card-head h3{font-size:19px;font-weight:700;letter-spacing:-.1px}
.tl-card p{font-size:15px;line-height:1.85}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.tl-meta li{
  font-size:13px;
  color:var(--light-2);
  background:#F1EFFA;
  border-radius:999px;
  padding:4px 12px;
}
.tl-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:16px;
  font-size:14.5px;
  font-weight:600;
  color:var(--primary);
}
.tl-link .arrow{transition:transform .2s ease}
.tl-link:hover{color:var(--primary-hover)}
.tl-link:hover .arrow{transform:translateX(3px)}

/* ===== 版本速览 ===== */
.shot-card{
  margin:0;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-700);
  box-shadow:var(--shadow-card);
}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-card figcaption{
  padding:12px 16px;
  font-size:13px;
  color:var(--text-45);
  border-top:1px solid var(--line);
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
  margin-top:28px;
}
.stat-card{
  background:var(--bg-700);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 18px;
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.stat-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(109,74,255,.4);
}
.stat-card .stat-k{margin-bottom:6px}
.stat-card .stat-v{font-size:18px}
.stat-card p{font-size:13px;color:var(--text-45);margin-top:8px;line-height:1.7}

.check-list{margin-top:28px;display:grid;gap:14px}
.check-list li{
  position:relative;
  padding-left:30px;
  font-size:15px;
  color:var(--text-70);
  line-height:1.8;
  transition:padding-left .2s ease,color .2s ease;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:16px;height:16px;
  border-radius:5px;
  background:rgba(200,255,61,.16);
  border:1px solid rgba(200,255,61,.42);
}
.check-list li::after{
  content:"";
  position:absolute;
  left:5px;top:14px;
  width:6px;height:3px;
  border-left:2px solid var(--accent);
  border-bottom:2px solid var(--accent);
  transform:rotate(-45deg);
}
.check-list li:hover{color:var(--text-100);padding-left:34px}

/* ===== 系统要求面板 ===== */
.spec-panel{
  background:var(--light-bg);
  color:var(--light-1);
  border-radius:22px;
  padding:40px;
  border:1px solid rgba(147,130,255,.28);
  box-shadow:0 30px 60px -40px rgba(0,0,0,.9);
}
.spec-panel h2{font-size:30px;line-height:1.3;font-weight:700;color:var(--light-1)}
.spec-panel .section-lead{color:var(--light-2)}
.spec-col h3{
  font-size:17px;
  font-weight:700;
  color:var(--light-1);
  margin-bottom:18px;
  display:flex;
  align-items:center;
  gap:10px;
}
.spec-col h3::before{
  content:"";
  width:8px;height:8px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(109,74,255,.14);
}
.spec-row{
  display:grid;
  grid-template-columns:132px minmax(0,1fr);
  gap:16px;
  padding:14px 0;
  border-bottom:1px dashed var(--light-line);
}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-size:14px;color:var(--light-2);font-weight:600}
.spec-row dd{font-size:14.5px;color:var(--light-1);font-family:var(--font-mono)}

/* ===== 步骤流程 ===== */
.step-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.step-card{
  position:relative;
  background:var(--bg-700);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(109,74,255,.4);
}
.step-num{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:24px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:1px;
  margin-bottom:12px;
}
.step-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step-card p{font-size:14.5px;color:var(--text-70);line-height:1.8}

/* ===== FAQ ===== */
.faq-list{max-width:900px}
.faq-item{
  background:var(--bg-700);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:rgba(109,74,255,.4)}
.faq-item.is-open{
  border-color:rgba(109,74,255,.5);
  box-shadow:0 22px 44px -30px rgba(0,0,0,.9);
}
.faq-q{
  width:100%;
  min-height:60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:14px 22px;
  background:none;
  border:0;
  color:var(--text-100);
  font-size:16.5px;
  font-weight:600;
  text-align:left;
  line-height:1.6;
}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
  transition:transform .24s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--accent);
  border-radius:2px;
  transition:opacity .24s ease,transform .24s ease;
}
.faq-icon::before{left:0;right:0;top:9px;height:2px}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a-inner{
  padding:0 22px 22px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--text-70);
}

/* ===== CTA 带 ===== */
.cta-band{
  background:linear-gradient(135deg,rgba(109,74,255,.24),rgba(23,20,42,.94) 58%),var(--bg-800);
  border:1px solid rgba(109,74,255,.42);
  border-radius:24px;
  padding:48px 46px;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:44px;
  align-items:center;
}
.cta-band h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.3px;max-width:460px}
.cta-band p{margin-top:16px;color:var(--text-70);font-size:15.5px;line-height:1.9;max-width:480px}
.cta-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.cta-item{display:flex;flex-direction:column;gap:10px}
.cta-hint{font-size:12.5px;color:var(--text-45);line-height:1.6}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding-top:64px;
  margin-top:0;
}
.footer-grid{padding-bottom:40px}
.site-footer .brand{margin-bottom:18px}
.footer-slogan{
  color:var(--text-70);
  font-size:14.5px;
  line-height:1.85;
  max-width:290px;
}
.footer-title{
  font-size:12.5px;
  letter-spacing:1.5px;
  font-weight:700;
  color:var(--text-45);
  margin-bottom:16px;
}
.footer-links li{margin-bottom:10px}
.footer-links a{
  display:inline-block;
  color:var(--text-70);
  font-size:14.5px;
  transition:transform .18s ease,color .18s ease;
}
.footer-links a:hover{color:var(--accent);transform:translateX(4px)}
.footer-notes p{color:var(--text-45);font-size:13.5px;line-height:1.9;margin-bottom:10px}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  align-items:center;
}
.footer-bottom p{color:var(--text-45);font-size:13px}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .main-nav{
    position:fixed;
    left:0;right:0;
    top:64px;bottom:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:24px 20px 40px;
    background:rgba(15,13,26,.98);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
    transform:translateX(100%);
    opacity:0;
    pointer-events:none;
    transition:transform .3s ease,opacity .3s ease;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);opacity:1;pointer-events:auto}
  .nav-link{
    min-height:48px;
    padding:12px 18px;
    border-radius:14px;
    font-size:16px;
    justify-content:flex-start;
    border:1px solid var(--line);
    background:rgba(32,28,56,.6);
  }
  .nav-link.is-active{border-color:transparent}
  .drawer-cta{display:block;margin-top:12px}
  .drawer-cta .btn{width:100%}
  .header-actions > .btn{display:none}
  .nav-toggle{display:block}
  .page-hero{padding:36px 0 64px}
  .page-hero h1{font-size:34px}
  .hero-lead{font-size:16px}
  .hero-shot{margin-top:36px}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:36px 30px;gap:32px}
  .cta-actions{grid-template-columns:repeat(3,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .anchor-col{position:static;margin-bottom:36px}
  .anchor-list{display:flex;flex-wrap:wrap;gap:8px}
  .anchor-list li{margin-bottom:0}
  .anchor-list a{padding:9px 14px;font-size:14px}
  .section{padding:72px 0}
  .spec-panel{padding:32px 26px}
}

@media (max-width:767px){
  .grid-container{padding-left:20px;padding-right:20px}
  .page-hero h1{font-size:30px;line-height:1.3}
  .section-head h2,.spec-panel h2,.cta-band h2{font-size:24px}
  .section-lead,.cta-band p{font-size:15px}
  .tl-head h2{font-size:22px}
  .hero-stats li{min-width:132px;padding:10px 14px}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .step-grid{grid-template-columns:minmax(0,1fr)}
  .cta-actions{grid-template-columns:minmax(0,1fr)}
  .cta-item .btn{width:100%}
  .spec-row{grid-template-columns:minmax(0,1fr);gap:4px}
  .tl-card{padding:18px}
  .timeline{padding-left:24px}
  .tl-item::before{left:-24px;width:12px;height:12px;top:24px}
  .light-zone{padding:56px 0 64px}
  .section{padding:56px 0}
  .site-footer{padding-top:48px}
}

@media (max-width:520px){
  .header-inner{height:64px}
  .brand{font-size:15.5px}
  .brand-mark{width:22px;height:22px;border-radius:8px}
  .brand-mark::after{inset:6px}
  .stat-grid{grid-template-columns:minmax(0,1fr)}
  .hero-cta .btn{width:100%}
  .tl-meta li{font-size:12.5px}
  .faq-q{font-size:15.5px;padding:14px 18px}
  .faq-a-inner{padding:0 18px 20px;font-size:15px}
}

/* roulang page: category4 */
:root{
  --bg-900:#0F0D1A;
  --bg-800:#17142A;
  --bg-700:#201C38;
  --line:rgba(147,130,255,.18);
  --primary:#6D4AFF;
  --primary-hover:#5636E8;
  --accent:#C8FF3D;
  --accent-2:#FF5C39;
  --text-100:#F4F2FF;
  --text-70:#B9B3D6;
  --text-45:#7D7898;
  --light-bg:#F6F5FB;
  --light-100:#1A1730;
  --light-70:#5B5678;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-card:0 1px 0 var(--line), 0 18px 40px -24px rgba(0,0,0,.75);
  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(200,255,61,.3);color:#0F0D1A;}

.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;margin:0 auto;}
.grid-x{display:flex;flex-flow:row wrap;}
.cell{flex:0 0 auto;min-height:0;min-width:0;width:100%;}
.small-12{width:100%;}
@media screen and (min-width:768px){
  .medium-6{width:50%;}
}
@media screen and (min-width:1024px){
  .large-3{width:25%;}
  .large-6{width:50%;}
}
.grid-margin-x{margin-left:-16px;margin-right:-16px;}
.grid-margin-x>.cell{padding-left:16px;padding-right:16px;}

/* ====== 通用文本层级 ====== */
.h1,.page-hero h1{font-size:48px;line-height:1.15;font-weight:800;letter-spacing:-.5px;}
.section h2{font-size:34px;line-height:1.25;font-weight:700;letter-spacing:-.3px;}
.section h3{font-size:22px;line-height:1.35;font-weight:600;}
.lede{font-size:17px;line-height:1.9;color:var(--text-70);}
.muted{color:var(--text-45);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(109,74,255,.16);border:1px solid rgba(109,74,255,.35);
  color:#C8BFFF;font-size:12.5px;font-weight:600;letter-spacing:.6px;
}
.eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 3px rgba(200,255,61,.18);
}

/* ====== 按钮 ====== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;letter-spacing:.3px;
  border:1.5px solid transparent;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#12100F;box-shadow:0 14px 30px -18px rgba(200,255,61,.9);}
.btn-primary:hover{background:#DAFF70;color:#12100F;transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(200,255,61,.5);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:rgba(244,242,255,.28);color:var(--text-100);}
.btn-ghost:hover{border-color:var(--primary);background:rgba(109,74,255,.12);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-solid{background:var(--primary);color:#fff;}
.btn-solid:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px -18px rgba(109,74,255,.95);}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
.btn-lg{height:54px;padding:0 30px;font-size:16px;border-radius:999px;}
.btn-capsule{border-radius:999px;}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--primary);}
.text-link i{transition:transform .18s ease;}
.text-link:hover i{transform:translateX(3px);}

/* ====== Header ====== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:transparent;transition:background .25s ease;
}
.site-header.is-stuck{background:rgba(15,13,26,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);}
.site-header.is-stuck::after{background:var(--line);}
.header-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:88px;transition:height .25s ease;
}
.site-header.is-stuck .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-100);position:relative;z-index:3;}
.brand:hover{color:var(--text-100);}
.brand-mark{
  position:relative;flex:0 0 auto;width:28px;height:28px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),#9A7BFF);
  box-shadow:inset 0 0 0 1px rgba(200,255,61,.35);
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;width:9px;height:9px;border-radius:3px;
  background:var(--accent);transform:translate(-50%,-50%);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.2px;white-space:nowrap;}
.main-nav{
  display:flex;align-items:center;gap:4px;
  padding:6px;border:1px solid var(--line);border-radius:999px;
  background:rgba(255,255,255,.035);backdrop-filter:blur(8px);
}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:var(--text-70);
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:rgba(109,74,255,.14);color:var(--text-100);}
.nav-link.is-active,.nav-link[aria-current="page"]{background:var(--primary);color:#fff;}
.nav-link.is-active:hover,.nav-link[aria-current="page"]:hover{background:var(--primary-hover);color:#fff;}
.drawer-cta{display:none;}
.header-actions{display:flex;align-items:center;gap:12px;position:relative;z-index:3;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:background .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:rgba(109,74,255,.16);border-color:rgba(109,74,255,.5);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-100);transition:transform .22s ease,opacity .22s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ====== Hero ====== */
.page-hero{
  position:relative;overflow:hidden;
  padding:170px 0 80px;
  background-image:linear-gradient(180deg,rgba(15,13,26,.86) 0%,rgba(15,13,26,.94) 55%,rgba(15,13,26,.99) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(200,255,61,.35) 1px,transparent 1px);
  background-size:26px 26px;opacity:.16;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line);
}
.hero-inner{position:relative;z-index:2;max-width:820px;margin:0 auto;text-align:center;}
.hero-inner h1{margin:20px 0 18px;}
.hero-inner h1 .hl{color:var(--accent);}
.hero-inner .lede{max-width:700px;margin:0 auto;}
.hero-meta{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px 28px;
  margin-top:30px;font-size:13.5px;color:var(--text-45);
}
.hero-meta li{display:inline-flex;align-items:center;gap:8px;}
.hero-meta li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.85;}
.hero-meta li:first-child::before{background:var(--accent-2);}
.hero-visual{
  position:relative;z-index:2;max-width:660px;margin:46px auto 0;
  border:1px solid var(--line);border-radius:18px;overflow:hidden;
  box-shadow:0 34px 70px -34px rgba(0,0,0,.9);
}
.hero-visual img{width:100%;display:block;}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-45);margin-bottom:22px;justify-content:center;
}
.crumbs a{color:var(--text-70);}
.crumbs a:hover{color:var(--accent);}
.crumbs span[aria-current]{color:var(--text-100);}

/* ====== 板块 ====== */
.section{padding:92px 0;}
.section--tight{padding:72px 0;}
.section-head{max-width:740px;margin:0 auto 44px;text-align:center;}
.section-head h2{margin:16px 0 14px;}
.section-head p{color:var(--text-70);font-size:16px;line-height:1.9;}
.section-head--left{margin-left:0;text-align:left;}

/* ====== 快速定位 ====== */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.quick-card{
  display:flex;flex-direction:column;gap:12px;
  padding:24px 22px 26px;border-radius:var(--radius-card);
  background:var(--bg-700);border:1px solid var(--line);
  box-shadow:var(--shadow-card);color:var(--text-100);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.quick-card:hover{
  transform:translateY(-4px);color:var(--text-100);
  border-color:rgba(109,74,255,.55);
  box-shadow:0 1px 0 var(--line),0 26px 46px -26px rgba(0,0,0,.9);
}
.quick-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:rgba(109,74,255,.18);border:1px solid rgba(109,74,255,.4);
  color:#C8BFFF;font-size:17px;
}
.quick-card h3{font-size:17px;font-weight:700;line-height:1.4;}
.quick-card p{font-size:14px;line-height:1.75;color:var(--text-70);}
.quick-card .quick-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:6px;}

/* ====== 排查流程 ====== */
.flow-panel{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--bg-800);border:1px solid var(--line);border-radius:20px;
  padding:40px 36px;
  box-shadow:0 1px 0 var(--line),0 30px 60px -40px rgba(0,0,0,.9);
}
.flow-item{padding:0 30px;border-left:1px solid var(--line);}
.flow-item:first-child{border-left:0;padding-left:0;}
.flow-item:last-child{padding-right:0;}
.flow-item .flow-num{
  font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:1px;
  color:var(--accent);display:block;margin-bottom:12px;
}
.flow-item h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.flow-item p{font-size:14.5px;line-height:1.85;color:var(--text-70);}

/* ====== FAQ ====== */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(147,130,255,.34);}
.faq-item.is-open{border-color:rgba(109,74,255,.6);box-shadow:0 1px 0 var(--line),0 22px 44px -30px rgba(0,0,0,.9);}
.faq-toggle{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:14px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text-100);
  transition:color .18s ease;
}
.faq-toggle:hover{color:#fff;}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid rgba(147,130,255,.4);
  transition:transform .22s ease,background .2s ease,border-color .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-70);border-radius:2px;
  transform:translate(-50%,-50%);transition:background .2s ease,opacity .2s ease;
}
.faq-icon::before{width:9px;height:1.5px;}
.faq-icon::after{width:1.5px;height:9px;}
.faq-item.is-open .faq-icon{background:var(--accent);border-color:var(--accent);transform:rotate(180deg);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#151221;}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{display:none;}
.faq-item.is-open .faq-a{display:block;}
.faq-a-inner{padding:2px 22px 24px;color:var(--text-70);font-size:15.5px;line-height:1.85;}
.faq-a-inner p+p{margin-top:12px;}
.faq-a-inner ul{margin:12px 0 0;}
.faq-a-inner li{position:relative;padding-left:18px;margin-bottom:8px;}
.faq-a-inner li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
  background:var(--accent);opacity:.85;
}
.faq-a-inner strong{color:var(--text-100);font-weight:600;}
.faq-tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  background:rgba(109,74,255,.18);color:#C8BFFF;font-size:12px;font-weight:600;
  margin-bottom:10px;
}

/* ====== 提交表单（浅色反差） ====== */
.contact-section{
  background:var(--light-bg);color:var(--light-100);
  padding:92px 0;position:relative;
}
.contact-section::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:rgba(26,23,48,.08);
}
.contact-head{max-width:700px;margin:0 auto 40px;text-align:center;}
.contact-head h2{color:var(--light-100);font-size:34px;line-height:1.25;font-weight:700;}
.contact-head p{margin-top:14px;color:var(--light-70);font-size:16px;line-height:1.85;}
.form-card{
  max-width:760px;margin:0 auto;background:#FFFFFF;border:1px solid rgba(26,23,48,.08);
  border-radius:20px;padding:38px 36px;
  box-shadow:0 30px 70px -40px rgba(26,23,48,.5);
}
.field{margin-bottom:20px;}
.field:last-of-type{margin-bottom:26px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--light-100);margin-bottom:9px;}
.field label .req{color:#D8391A;margin-left:4px;}
.input{
  width:100%;height:50px;padding:0 16px;border-radius:12px;
  border:1px solid rgba(26,23,48,.16);background:#FBFAFF;color:var(--light-100);
  font-size:15px;line-height:1.6;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
textarea.input{height:auto;min-height:132px;padding:14px 16px;line-height:1.75;resize:vertical;}
.input::placeholder{color:#9A95B4;}
.input:hover{border-color:rgba(109,74,255,.4);}
.input:focus{
  outline:none;background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(109,74,255,.25);
}
.input.has-error{border-color:var(--accent-2);box-shadow:0 0 0 3px rgba(255,92,57,.18);}
.field-error{display:none;margin-top:7px;font-size:13px;color:#D8391A;}
.field-error.is-show{display:block;}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-tip{
  display:none;margin-top:20px;padding:14px 18px;border-radius:12px;
  background:rgba(36,208,126,.12);border:1px solid rgba(36,208,126,.4);
  color:#12744A;font-size:14.5px;
}
.form-tip.is-show{display:block;}
.form-note{margin-top:16px;font-size:13px;color:var(--light-70);}

/* ====== CTA 带 ====== */
.cta-band{padding:0 0 92px;}
.cta-inner{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:46px 44px;border-radius:24px;
  background:linear-gradient(135deg,#2B2159 0%,#191533 55%,#141126 100%);
  border:1px solid rgba(109,74,255,.4);
  box-shadow:0 1px 0 var(--line),0 40px 80px -46px rgba(109,74,255,.75);
}
.cta-inner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(200,255,61,.4) 1px,transparent 1px);
  background-size:22px 22px;opacity:.14;
}
.cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-copy h2{font-size:32px;line-height:1.3;font-weight:700;}
.cta-copy p{margin-top:14px;color:var(--text-70);font-size:15.5px;line-height:1.85;}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;}

/* ====== Footer ====== */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:66px 0 0;}
.footer-grid{row-gap:34px;}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.4px;color:var(--text-100);margin-bottom:16px;}
.footer-slogan{color:var(--text-45);font-size:14px;line-height:1.85;margin-top:16px;max-width:290px;}
.footer-links li+li{margin-top:10px;}
.footer-links a{color:var(--text-70);font-size:14.5px;display:inline-block;transition:color .18s ease,transform .18s ease;}
.footer-links a:hover{color:var(--accent);transform:translateX(4px);}
.footer-notes p{color:var(--text-45);font-size:13.5px;line-height:1.9;}
.footer-notes p+p{margin-top:10px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line);padding:22px 0 26px;
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-45);
}
.footer-bottom a{color:var(--text-45);}
.footer-bottom a:hover{color:var(--accent);}

/* ====== 响应式 ====== */
@media (max-width:1279px){
  .nav-link{padding:0 12px;font-size:13.5px;}
  .brand-text{font-size:16px;}
  .h1,.page-hero h1{font-size:42px;}
}
@media (max-width:1023px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{height:70px;}
  .site-header.is-stuck .header-inner{height:62px;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:0;left:0;right:0;bottom:0;
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:6px;padding:96px 20px 34px;overflow-y:auto;
    background:rgba(15,13,26,.98);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    border:0;border-radius:0;
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-14px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .main-nav.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);}
  .nav-link{min-height:48px;height:auto;padding:0 18px;font-size:16px;border-radius:12px;}
  .drawer-cta{display:block;margin-top:18px;}
  .drawer-cta .btn{width:100%;height:52px;}
  .page-hero{padding:132px 0 60px;}
  .section{padding:64px 0;}
  .section--tight{padding:56px 0;}
  .h1,.page-hero h1{font-size:34px;}
  .section h2,.contact-head h2,.cta-copy h2{font-size:26px;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .flow-panel{grid-template-columns:1fr;padding:32px 26px;gap:0;}
  .flow-item{padding:24px 0 0;border-left:0;border-top:1px solid var(--line);}
  .flow-item:first-child{padding-top:0;border-top:0;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .cta-actions{width:100%;}
  .form-card{padding:28px 22px;}
}
@media (max-width:767px){
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .page-hero{padding:118px 0 52px;}
  .h1,.page-hero h1{font-size:29px;line-height:1.3;}
  .section h2,.contact-head h2,.cta-copy h2{font-size:23px;}
  .hero-meta{flex-direction:column;align-items:center;gap:8px;}
  .quick-grid{grid-template-columns:1fr;}
  .faq-toggle{font-size:15px;padding:14px 18px;gap:12px;}
  .faq-a-inner{padding:2px 18px 20px;font-size:15px;}
  .btn{height:46px;padding:0 20px;font-size:15px;}
  .btn-lg{height:50px;padding:0 22px;}
  .cta-actions .btn{width:100%;}
  .form-actions .btn{width:100%;}
}