:root{
  --bg1:#0b0b18;
  --bg2:#15152c;
  --card:#1a1a36;
  --border:#2e2e58;
  --text:#e9e9f4;
  --title:#f2f2ff;
  --accent:#7c5cff;
  --accent2:#9d7cff;
  --link:#a99bff;
}
html[data-theme="light"]{
  --bg1:#f6f8ff;
  --bg2:#eef2fb;
  --card:#ffffff;
  --border:rgba(40,62,100,.13);
  --text:#142033;
  --title:#0d0820;
  --accent:#6c4df6;
  --accent2:#1fb9d6;
  --link:#5a3ee0;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:linear-gradient(180deg,var(--bg1) 0%,var(--bg2) 100%);
  color:var(--text);
  line-height:1.7;
  min-height:100vh;
  transition:background .3s,color .3s;
}
a{color:var(--link);text-decoration:none;transition:color .2s;}
a:hover{color:var(--accent2);text-decoration:underline;}
img{display:block;max-width:100%;height:auto;}
h1,h2,h3{color:var(--title);line-height:1.3;}

/* 阅读进度条 */
#progress-bar{
  position:fixed;top:0;left:0;height:3px;width:0%;
  background:linear-gradient(90deg,var(--accent),var(--accent2));
  z-index:9999;transition:width .1s linear;
}

/* 导航 */
header.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(11,11,24,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:box-shadow .3s,border-color .3s,background .3s;
}
html[data-theme="light"] header.site-header{
  background:rgba(246,248,255,.82);
}
header.site-header.scrolled{
  border-bottom:1px solid var(--border);
  box-shadow:0 6px 24px rgba(0,0,0,.35);
}
html[data-theme="light"] header.site-header.scrolled{
  box-shadow:0 6px 24px rgba(40,62,100,.12);
}
.nav-wrap{
  max-width:1280px;margin:0 auto;padding:0 20px;
  height:66px;display:flex;align-items:center;gap:18px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:800;color:var(--title);
  white-space:nowrap;flex-shrink:0;
}
.logo:hover{text-decoration:none;color:var(--accent2);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:900;color:#fff;flex-shrink:0;
}
nav.main-nav{display:flex;gap:4px;margin-left:8px;flex:1;}
nav.main-nav a{
  color:var(--text);font-size:14px;padding:8px 11px;border-radius:8px;
  white-space:nowrap;transition:background .2s,color .2s;
}
nav.main-nav a:hover{background:rgba(124,92,255,.18);color:var(--accent2);text-decoration:none;}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:6px;
  background:var(--card);border:1px solid var(--border);
  border-radius:10px;padding:6px 10px;
}
.search-box input{
  background:transparent;border:none;outline:none;
  color:var(--text);font-size:13px;width:130px;
  font-family:inherit;
}
.search-box input::placeholder{color:var(--text);opacity:.55;}
.search-box button{
  background:transparent;border:none;cursor:pointer;
  color:var(--accent2);font-size:14px;font-family:inherit;
}
.btn{
  display:inline-block;border:none;cursor:pointer;
  font-family:inherit;font-size:14px;font-weight:600;
  padding:9px 18px;border-radius:10px;
  transition:transform .2s,box-shadow .2s,background .2s,color .2s;
  text-align:center;
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;box-shadow:0 6px 18px rgba(124,92,255,.35);
}
.btn-primary:hover{color:#fff;box-shadow:0 10px 26px rgba(124,92,255,.5);}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid var(--border);
}
.btn-ghost:hover{color:var(--accent2);border-color:var(--accent2);}
.theme-toggle{
  width:38px;height:38px;border-radius:10px;cursor:pointer;
  background:var(--card);border:1px solid var(--border);
  color:var(--text);font-size:16px;display:flex;
  align-items:center;justify-content:center;
  transition:border-color .2s,color .2s;
}
.theme-toggle:hover{border-color:var(--accent2);color:var(--accent2);}
.hamburger{
  display:none;width:40px;height:40px;border-radius:10px;
  background:var(--card);border:1px solid var(--border);
  cursor:pointer;flex-direction:column;justify-content:center;
  align-items:center;gap:5px;
}
.hamburger span{
  display:block;width:18px;height:2px;background:var(--text);
  border-radius:2px;transition:transform .3s,opacity .3s;
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.active span:nth-child(2){opacity:0;}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-menu{
  display:none;flex-direction:column;gap:2px;
  padding:10px 20px 20px;border-top:1px solid var(--border);
  background:rgba(11,11,24,.96);
}
html[data-theme="light"] .mobile-menu{background:rgba(246,248,255,.98);}
.mobile-menu.open{display:flex;}
.mobile-menu a{
  color:var(--text);padding:11px 12px;border-radius:8px;font-size:15px;
}
.mobile-menu a:hover{background:rgba(124,92,255,.18);color:var(--accent2);text-decoration:none;}

/* 通用容器 */
.container{max-width:1280px;margin:0 auto;padding:0 20px;}
section{padding:64px 0;}
.section-head{margin-bottom:34px;}
.section-head h2{
  font-size:26px;font-weight:800;display:flex;align-items:center;gap:12px;
}
.section-head h2::before{
  content:"";width:6px;height:26px;border-radius:3px;
  background:linear-gradient(180deg,var(--accent),var(--accent2));
}
.section-head p{margin-top:8px;font-size:14px;opacity:.85;}

/* Hero */
.hero{
  min-height:78vh;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;
  padding:120px 20px 60px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,92,255,.28),transparent 70%);
  top:-140px;right:-140px;pointer-events:none;
}
.hero-logo{
  width:200px;height:200px;border-radius:44px;object-fit:cover;
  border:2px solid var(--border);
  box-shadow:0 20px 50px rgba(124,92,255,.35);
  margin-bottom:26px;
}
.hero h1{
  font-size:clamp(24px,4vw,42px);font-weight:900;
  max-width:900px;margin-bottom:16px;
  background:linear-gradient(120deg,var(--title),var(--accent2));
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero .slogan{
  font-size:clamp(15px,2vw,19px);color:var(--accent2);
  font-weight:600;margin-bottom:16px;
}
.hero .hero-desc{
  max-width:720px;font-size:15px;opacity:.92;margin-bottom:30px;
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:48px;}
.hero-stats{
  display:flex;gap:48px;flex-wrap:wrap;justify-content:center;
}
.hero-stats .stat{text-align:center;}
.hero-stats .stat b{
  display:block;font-size:28px;font-weight:900;color:var(--accent2);
}
.hero-stats .stat span{font-size:13px;opacity:.85;}

/* 网格 */
.grid-cards{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
}
.card{
  background:var(--card);border:1px solid var(--border);
  border-radius:16px;overflow:hidden;
  transition:transform .25s,border-color .25s,box-shadow .25s;
  display:flex;flex-direction:column;
}
.card:hover{
  transform:translateY(-6px);
  border-color:var(--accent2);
  box-shadow:0 16px 34px rgba(124,92,255,.25);
}
.card-cover{position:relative;}
.card-cover img{width:100%;height:auto;aspect-ratio:220/310;object-fit:cover;}
.badge{
  position:absolute;top:10px;left:10px;
  font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px;
  color:#fff;background:var(--accent);
}
.badge.done{background:#3a9d6e;}
.badge-views{
  position:absolute;top:10px;right:10px;
  font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px;
  color:#fff;background:rgba(11,11,24,.72);
}
.card-body{padding:14px;display:flex;flex-direction:column;gap:6px;flex:1;}
.card-body h3{font-size:15px;font-weight:800;}
.card-meta{font-size:12px;opacity:.85;line-height:1.6;}
.card-meta b{color:var(--accent2);font-weight:600;}

/* 精品推荐 */
.feature-list{display:flex;flex-direction:column;gap:22px;}
.feature-card{
  display:flex;gap:22px;background:var(--card);
  border:1px solid var(--border);border-radius:16px;
  padding:18px;transition:border-color .25s,transform .25s;
}
.feature-card:hover{border-color:var(--accent2);transform:translateY(-4px);}
.feature-card img{
  width:300px;height:200px;object-fit:cover;
  border-radius:12px;flex-shrink:0;
}
.feature-info{flex:1;display:flex;flex-direction:column;gap:8px;}
.feature-info h3{font-size:19px;font-weight:800;}
.feature-info p{font-size:14px;opacity:.9;}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;}
.tag{
  font-size:12px;padding:3px 10px;border-radius:20px;
  background:rgba(124,92,255,.16);color:var(--accent2);
  border:1px solid rgba(124,92,255,.3);
}
.feature-meta{font-size:13px;opacity:.85;}

/* 详细介绍 */
.detail-layout{display:grid;grid-template-columns:280px 1fr;gap:30px;}
.detail-side{
  background:var(--card);border:1px solid var(--border);
  border-radius:18px;padding:30px 24px;
  display:flex;flex-direction:column;gap:16px;
  align-self:start;position:sticky;top:90px;
}
.detail-side .big-num{
  font-size:76px;font-weight:900;line-height:1;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.detail-side .summary{font-size:14px;opacity:.9;}
.detail-side img{border-radius:12px;width:100%;height:auto;}
.detail-main h2{margin-bottom:18px;font-size:24px;}
.detail-main h3{margin:22px 0 10px;font-size:17px;}
.detail-main p{font-size:15px;margin-bottom:12px;opacity:.94;}
.detail-features{
  display:flex;gap:14px;flex-wrap:wrap;margin-top:26px;
}
.detail-features span{
  font-size:13px;font-weight:600;padding:8px 18px;border-radius:10px;
  background:rgba(124,92,255,.14);border:1px solid rgba(124,92,255,.32);
  color:var(--accent2);
}

/* 角色 */
.char-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.char-card{
  display:flex;gap:18px;background:var(--card);
  border:1px solid var(--border);border-radius:16px;padding:18px;
  transition:border-color .25s,transform .25s;
}
.char-card:hover{border-color:var(--accent2);transform:translateY(-4px);}
.char-card img{
  width:180px;height:180px;object-fit:cover;border-radius:14px;flex-shrink:0;
}
.char-info{display:flex;flex-direction:column;gap:6px;}
.char-info h3{font-size:17px;font-weight:800;}
.char-role{
  display:inline-block;font-size:12px;font-weight:700;
  padding:2px 10px;border-radius:20px;width:fit-content;
  background:rgba(124,92,255,.18);color:var(--accent2);
}
.char-info p{font-size:13.5px;opacity:.9;}
.char-info p b{color:var(--accent2);font-weight:600;}

/* 平台介绍 */
.platform-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:34px;}
.platform-main p{font-size:15px;margin-bottom:14px;opacity:.94;}
.platform-side{
  background:var(--card);border:1px solid var(--border);
  border-radius:18px;padding:26px;align-self:start;
}
.platform-side h3{font-size:17px;margin-bottom:16px;}
.step{display:flex;gap:12px;margin-bottom:16px;}
.step-num{
  width:30px;height:30px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;font-weight:800;font-size:14px;
  display:flex;align-items:center;justify-content:center;
}
.step p{font-size:13.5px;opacity:.92;}
.platform-feats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px;
}
.feat-box{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:18px;text-align:center;
  transition:border-color .25s,transform .25s;
}
.feat-box:hover{border-color:var(--accent2);transform:translateY(-4px);}
.feat-box b{display:block;font-size:15px;color:var(--accent2);margin-bottom:6px;}
.feat-box span{font-size:13px;opacity:.88;}

/* 多端同步 */
.sync-layout{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;}
.sync-text p{font-size:15px;margin-bottom:14px;opacity:.94;}
.sync-imgs{display:flex;gap:20px;justify-content:center;}
.sync-imgs img{
  width:400px;max-width:100%;height:auto;border-radius:18px;
  border:1px solid var(--border);
  box-shadow:0 16px 40px rgba(124,92,255,.2);
}

/* 公告 */
.notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.notice-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:20px;
  transition:border-color .25s,transform .25s;
}
.notice-card:hover{border-color:var(--accent2);transform:translateY(-4px);}
.notice-date{font-size:12px;color:var(--accent2);font-weight:700;margin-bottom:8px;}
.notice-card h3{font-size:15px;margin-bottom:8px;}
.notice-card p{font-size:13.5px;opacity:.9;}

/* 阅读指南 */
.guide-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:34px;}
.guide-text p{font-size:15px;margin-bottom:14px;opacity:.94;}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:14px 16px;
}
.check-item .ck{
  color:var(--accent2);font-weight:900;font-size:16px;flex-shrink:0;
}
.check-item p{font-size:13.5px;opacity:.92;}

/* APP下载 */
.app-section{text-align:center;}
.app-section p{max-width:720px;margin:0 auto 28px;font-size:15px;opacity:.94;}
.app-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* 评论 */
.comment-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.comment-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:18px;
  transition:border-color .25s,transform .25s;
}
.comment-card:hover{border-color:var(--accent2);transform:translateY(-4px);}
.comment-head{
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:10px;gap:10px;flex-wrap:wrap;
}
.comment-user{font-size:14px;font-weight:700;color:var(--accent2);}
.comment-time{font-size:12px;opacity:.75;}
.comment-card p{font-size:13.5px;opacity:.92;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;overflow:hidden;transition:border-color .25s;
}
.faq-item.active{border-color:var(--accent2);}
.faq-q{
  width:100%;text-align:left;cursor:pointer;
  background:transparent;border:none;font-family:inherit;
  color:var(--title);font-size:15px;font-weight:700;
  padding:18px 20px;display:flex;justify-content:space-between;
  align-items:center;gap:14px;
}
.faq-q .arrow{
  transition:transform .3s;color:var(--accent2);font-size:14px;flex-shrink:0;
}
.faq-item.active .faq-q .arrow{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-a p{padding:0 20px 18px;font-size:14px;opacity:.92;}

/* 侧边栏布局 */
.sidebar-layout{display:grid;grid-template-columns:1fr 320px;gap:34px;align-items:start;}
.sidebar{display:flex;flex-direction:column;gap:22px;position:sticky;top:90px;}
.side-box{
  background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:20px;
}
.side-box h3{
  font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-box h3::before{
  content:"";width:4px;height:16px;border-radius:2px;
  background:linear-gradient(180deg,var(--accent),var(--accent2));
}
.rank-item{
  display:flex;gap:12px;align-items:center;
  padding:9px 0;border-bottom:1px dashed var(--border);
  font-size:13.5px;
}
.rank-item:last-child{border-bottom:none;}
.rank-num{
  width:24px;height:24px;border-radius:7px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;
  background:rgba(124,92,255,.16);color:var(--accent2);
}
.rank-num.top{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;}
.rank-name{flex:1;color:var(--text);}
.rank-val{font-size:12px;color:var(--accent2);font-weight:700;}
.stat-list{display:flex;flex-direction:column;gap:12px;}
.stat-row{
  display:flex;justify-content:space-between;font-size:13.5px;
  padding-bottom:10px;border-bottom:1px dashed var(--border);
}
.stat-row:last-child{border-bottom:none;padding-bottom:0;}
.stat-row b{color:var(--accent2);font-weight:800;}

/* 底部 */
footer.site-footer{
  background:rgba(11,11,24,.6);border-top:1px solid var(--border);
  padding:54px 0 26px;margin-top:40px;
}
html[data-theme="light"] footer.site-footer{background:rgba(255,255,255,.7);}
.footer-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:36px;
}
.footer-col h3{font-size:15px;margin-bottom:14px;}
.footer-col a{
  display:block;font-size:13.5px;padding:5px 0;color:var(--text);
  opacity:.88;
}
.footer-col a:hover{color:var(--accent2);text-decoration:underline;opacity:1;}
.friend-links{
  padding:18px 0;border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);margin-bottom:20px;
  font-size:13px;display:flex;gap:16px;flex-wrap:wrap;align-items:center;
}
.friend-links b{color:var(--title);}
.copyright{font-size:12.5px;opacity:.85;line-height:1.9;}
.copyright a{font-size:12.5px;}

/* 返回顶部 */
#back-top{
  position:fixed;right:24px;bottom:24px;z-index:900;
  width:46px;height:46px;border-radius:14px;cursor:pointer;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;border:none;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(16px);
  transition:opacity .3s,transform .3s,visibility .3s;
  box-shadow:0 10px 26px rgba(124,92,255,.45);
}
#back-top.show{opacity:1;visibility:visible;transform:translateY(0);}

/* 响应式 */
@media(max-width:1080px){
  .grid-cards{grid-template-columns:repeat(3,1fr);}
  .sidebar-layout{grid-template-columns:1fr;}
  .sidebar{position:static;}
  nav.main-nav{display:none;}
  .hamburger{display:flex;}
  .search-box{display:none;}
  .detail-layout{grid-template-columns:1fr;}
  .detail-side{position:static;}
  .platform-layout,.sync-layout,.guide-layout{grid-template-columns:1fr;}
  .platform-feats{grid-template-columns:repeat(2,1fr);}
  .notice-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:760px){
  .grid-cards{grid-template-columns:repeat(2,1fr);gap:14px;}
  .char-grid,.comment-grid{grid-template-columns:1fr;}
  .feature-card{flex-direction:column;}
  .feature-card img{width:100%;height:auto;aspect-ratio:300/200;}
  .char-card{flex-direction:column;align-items:flex-start;}
  .notice-grid{grid-template-columns:1fr;}
  .platform-feats{grid-template-columns:1fr;}
  .hero-stats{gap:26px;}
  .hero-logo{width:150px;height:150px;border-radius:34px;}
  .sync-imgs{flex-direction:column;align-items:center;}
  .footer-grid{grid-template-columns:1fr;}
  .nav-right .btn-primary{display:none;}
  section{padding:48px 0;}
}