:root{
  --bg-start:#0b0b18;
  --bg-end:#15152c;
  --card:#1a1a36;
  --card-soft:#20203f;
  --border:#2e2e58;
  --border-bright:#4a4a86;
  --text:#e9e9f4;
  --title:#f2f2ff;
  --accent:#7c5cff;
  --accent-2:#9d7cff;
  --accent-soft:rgba(124,92,255,.16);
  --link:#b9a6ff;
  --link-hover:#e0d6ff;
  --good:#4fd6a4;
  --warn:#ffb45c;
  --shadow:0 10px 30px rgba(0,0,0,.45);
}
html[data-theme="light"]{
  --bg-start:#f6f8ff;
  --bg-end:#eef2fb;
  --card:#ffffff;
  --card-soft:#f2f5ff;
  --border:rgba(40,62,100,.13);
  --border-bright:rgba(108,77,246,.45);
  --text:#142033;
  --title:#0d0820;
  --accent:#6c4df6;
  --accent-2:#1fb9d6;
  --accent-soft:rgba(108,77,246,.10);
  --link:#5a3fd6;
  --link-hover:#1a0f66;
  --good:#0f9d6c;
  --warn:#b96a12;
  --shadow:0 10px 28px rgba(20,32,51,.12);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:linear-gradient(160deg,var(--bg-start),var(--bg-end));
  background-attachment:fixed;
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--link);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--link-hover);text-decoration:underline;}
h1,h2,h3,h4{color:var(--title);line-height:1.35;margin:0 0 .6em;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}

/* progress bar */
#progressBar{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  z-index:1200;transition:width .08s linear;
}

/* 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:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
html[data-theme="light"] .site-header{background:rgba(246,248,255,.82);}
.site-header.scrolled{
  border-bottom:1px solid var(--border);
  box-shadow:0 8px 24px rgba(0,0,0,.35);
}
html[data-theme="light"] .site-header.scrolled{box-shadow:0 8px 24px rgba(20,32,51,.10);}
.nav-wrap{
  display:flex;align-items:center;gap:18px;
  height:66px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-weight:800;font-size:18px;color:var(--title);
  white-space:nowrap;
}
.logo:hover{text-decoration:none;color:var(--title);}
.logo-mark{
  width:36px;height:36px;border-radius:10px;object-fit:cover;
  border:1px solid var(--border-bright);
}
.nav-links{
  display:flex;align-items:center;gap:4px;
  list-style:none;margin:0;padding:0;flex:1;
}
.nav-links a{
  display:block;padding:8px 11px;border-radius:8px;
  font-size:14.5px;color:var(--text);font-weight:500;
}
.nav-links a:hover{
  background:var(--accent-soft);color:var(--link-hover);text-decoration:none;
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.search-box{
  display:flex;align-items:center;
  background:var(--card-soft);
  border:1px solid var(--border);
  border-radius:10px;padding:4px 10px;
}
.search-box input{
  background:transparent;border:0;outline:0;color:var(--text);
  font-size:14px;width:130px;font-family:inherit;
}
.search-box input::placeholder{color:var(--text);opacity:.6;}
.search-box button{
  background:transparent;border:0;color:var(--accent-2);
  cursor:pointer;font-size:14px;font-weight:700;font-family:inherit;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border-radius:10px;font-size:14.5px;font-weight:700;
  border:1px solid transparent;cursor:pointer;font-family:inherit;
  transition:transform .18s ease,box-shadow .18s ease,background .2s ease,color .2s ease;
  text-align:center;
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn-primary{
  background:linear-gradient(120deg,var(--accent),var(--accent-2));
  color:#fff;box-shadow:0 8px 20px rgba(124,92,255,.35);
}
.btn-primary:hover{color:#fff;box-shadow:0 12px 26px rgba(124,92,255,.5);}
.btn-ghost{
  background:var(--card-soft);color:var(--text);border-color:var(--border);
}
.btn-ghost:hover{color:var(--title);border-color:var(--border-bright);}
.icon-btn{
  width:40px;height:40px;border-radius:10px;
  background:var(--card-soft);border:1px solid var(--border);
  color:var(--text);cursor:pointer;font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;
}
.icon-btn:hover{border-color:var(--border-bright);color:var(--title);}
.hamburger{display:none;}

/* mobile menu */
.mobile-menu{
  display:none;flex-direction:column;gap:4px;
  padding:12px 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{
  padding:10px 12px;border-radius:8px;color:var(--text);font-weight:500;
}
.mobile-menu a:hover{background:var(--accent-soft);text-decoration:none;color:var(--link-hover);}

/* hero */
.hero{
  min-height:76vh;display:flex;align-items:center;justify-content:center;
  text-align:center;padding:130px 0 60px;position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 20% 20%,rgba(124,92,255,.22),transparent 45%),
             radial-gradient(circle at 80% 10%,rgba(31,185,214,.16),transparent 45%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto;padding:0 20px;}
.hero-logo{
  width:200px;height:200px;border-radius:34px;object-fit:cover;
  margin:0 auto 26px;border:1px solid var(--border-bright);
  box-shadow:var(--shadow);
}
.hero h1{
  font-size:clamp(26px,4.4vw,46px);letter-spacing:.5px;margin-bottom:14px;
}
.hero .slogan{
  font-size:clamp(15px,2vw,19px);color:var(--accent-2);font-weight:700;margin-bottom:16px;
}
.hero .intro{
  max-width:720px;margin:0 auto 28px;font-size:16px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:44px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:720px;margin:0 auto;
}
.stat{
  background:var(--card);border:1px solid var(--border);border-radius:16px;
  padding:18px 12px;
}
.stat b{display:block;font-size:clamp(20px,3vw,28px);color:var(--accent-2);}
.stat span{font-size:13.5px;}

/* sections */
section{padding:64px 0;}
.section-head{margin-bottom:34px;}
.section-head h2{
  font-size:clamp(21px,3vw,30px);margin-bottom:10px;
}
.section-head p{max-width:760px;margin:0;font-size:15.5px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:800;letter-spacing:1px;
  color:var(--accent-2);background:var(--accent-soft);
  padding:4px 12px;border-radius:999px;margin-bottom:12px;
}

/* comic grid */
.comic-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.comic-card{
  background:var(--card);border:1px solid var(--border);border-radius:16px;
  overflow:hidden;position:relative;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.comic-card:hover{
  transform:translateY(-6px);border-color:var(--border-bright);
  box-shadow:var(--shadow);
}
.comic-cover{width:100%;aspect-ratio:220/310;object-fit:cover;}
.comic-body{padding:14px 14px 16px;}
.comic-body h3{font-size:16px;margin-bottom:8px;}
.comic-meta{font-size:13px;line-height:1.7;margin:0;}
.comic-meta span{color:var(--accent-2);font-weight:700;}
.badge{
  position:absolute;top:10px;left:10px;z-index:3;
  font-size:12px;font-weight:800;padding:3px 9px;border-radius:999px;
  background:rgba(11,11,24,.78);color:#fff;border:1px solid rgba(255,255,255,.22);
}
.badge.done{background:rgba(79,214,164,.85);color:#04231a;border-color:transparent;}
.badge-read{
  position:absolute;top:10px;right:10px;z-index:3;
  font-size:12px;font-weight:700;padding:3px 9px;border-radius:999px;
  background:rgba(124,92,255,.85);color:#fff;
}

/* featured */
.featured-list{display:flex;flex-direction:column;gap:20px;}
.feature-card{
  display:grid;grid-template-columns:300px 1fr;gap:22px;
  background:var(--card);border:1px solid var(--border);border-radius:18px;
  padding:18px;transition:border-color .22s ease,transform .22s ease;
}
.feature-card:hover{border-color:var(--border-bright);transform:translateY(-3px);}
.feature-card img{
  width:300px;height:200px;object-fit:cover;border-radius:12px;
}
.feature-card h3{font-size:19px;margin-bottom:8px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.tag{
  font-size:12.5px;font-weight:700;padding:3px 10px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent-2);border:1px solid var(--border);
}

/* detail */
.detail-split{display:grid;grid-template-columns:280px 1fr;gap:26px;align-items:start;}
.detail-side{
  background:var(--card-soft);border:1px solid var(--border);border-radius:18px;
  padding:26px 22px;position:sticky;top:90px;
}
.detail-side .num{
  font-size:64px;font-weight:900;line-height:1;
  color:var(--accent);opacity:.85;margin-bottom:14px;
}
.detail-side p{font-size:15px;margin:0;}
.detail-main h3{margin-top:26px;font-size:18px;}
.detail-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.detail-tags .tag{padding:8px 16px;font-size:13px;}

/* characters */
.char-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.char-card{
  display:flex;gap:18px;background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:18px;transition:border-color .22s ease,transform .22s ease;
}
.char-card:hover{border-color:var(--border-bright);transform:translateY(-4px);}
.char-card img{
  width:180px;height:180px;object-fit:cover;border-radius:14px;flex:0 0 180px;
}
.char-card h3{font-size:17px;margin-bottom:6px;}
.char-role{
  display:inline-block;font-size:12.5px;font-weight:800;
  color:var(--accent-2);background:var(--accent-soft);
  padding:2px 10px;border-radius:999px;margin-bottom:10px;
}
.char-card p{font-size:14px;margin:0 0 8px;}

/* platform */
.platform-split{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;align-items:start;}
.step-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px;}
.step-list li{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:16px 18px;display:flex;gap:14px;align-items:flex-start;
}
.step-num{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(120deg,var(--accent),var(--accent-2));
  color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;
  font-size:15px;
}
.feature-squares{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:34px;
}
.square{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:16px;text-align:center;font-size:14px;font-weight:700;color:var(--title);
}
.square small{display:block;font-weight:500;font-size:12.5px;margin-top:6px;color:var(--text);}

/* device */
.device-split{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;}
.device-imgs{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;}
.device-imgs img{
  width:400px;max-width:44%;height:600px;object-fit:cover;
  border-radius:20px;border:1px solid var(--border-bright);box-shadow:var(--shadow);
}

/* notice */
.notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.notice-card{
  background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;
  transition:border-color .22s ease,transform .22s ease;
}
.notice-card:hover{border-color:var(--border-bright);transform:translateY(-4px);}
.notice-date{font-size:12.5px;font-weight:800;color:var(--accent-2);margin-bottom:8px;}
.notice-card h3{font-size:16px;margin-bottom:8px;}
.notice-card p{font-size:14px;margin:0;}

/* guide */
.guide-split{display:grid;grid-template-columns:1.3fr 1fr;gap:30px;align-items:start;}
.check-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.check-list li{
  background:var(--card);border:1px solid var(--border);border-radius:12px;
  padding:14px 16px;font-size:14.5px;display:flex;gap:10px;align-items:flex-start;
}
.check-list li::before{
  content:"✓";color:var(--good);font-weight:900;flex:0 0 auto;
}

/* app download */
.app-download{
  text-align:center;background:var(--card);border:1px solid var(--border);
  border-radius:22px;padding:52px 26px;
}
.app-download p{max-width:720px;margin:0 auto 26px;}
.app-cta{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* comments */
.comment-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.comment-card{
  background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;
}
.comment-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;}
.comment-user{font-weight:800;color:var(--title);font-size:15px;}
.comment-time{font-size:12.5px;opacity:.85;}
.comment-card p{margin:0;font-size:14.5px;}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:14px;overflow:hidden;
}
.faq-q{
  width:100%;text-align:left;background:transparent;border:0;cursor:pointer;
  color:var(--title);font-size:15.5px;font-weight:700;font-family:inherit;
  padding:16px 18px;display:flex;justify-content:space-between;gap:14px;align-items:center;
}
.faq-q:hover{color:var(--accent-2);}
.faq-q .arrow{transition:transform .25s ease;color:var(--accent-2);font-size:14px;}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  padding:0 18px;
}
.faq-item.open .faq-a{max-height:320px;padding-bottom:16px;}
.faq-a p{margin:0;font-size:14.5px;}

/* layout with sidebar */
.layout-with-sidebar{display:grid;grid-template-columns:1fr 320px;gap:30px;align-items:start;}
.sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:90px;}
.side-card{
  background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;
}
.side-card h3{font-size:16px;margin-bottom:14px;}
.rank-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.rank-list li{display:flex;gap:12px;align-items:center;font-size:14.5px;}
.rank-num{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;background:var(--accent-soft);color:var(--accent-2);
}
.rank-num.top{background:linear-gradient(120deg,var(--accent),var(--accent-2));color:#fff;}
.stat-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.stat-list li{display:flex;justify-content:space-between;font-size:14.5px;gap:10px;}
.stat-list b{color:var(--accent-2);}

/* footer */
.site-footer{
  border-top:1px solid var(--border);background:rgba(11,11,24,.55);
  padding:56px 0 26px;margin-top:20px;
}
html[data-theme="light"] .site-footer{background:rgba(238,242,251,.7);}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;}
.footer-grid h3{font-size:16px;margin-bottom:14px;}
.footer-grid ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;}
.footer-grid a{font-size:14px;}
.friend-links{
  margin-top:34px;padding-top:22px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:10px 18px;font-size:14px;
}
.footer-bottom{
  margin-top:22px;padding-top:20px;border-top:1px solid var(--border);
  font-size:13.5px;display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
}
.footer-bottom .legal{display:flex;flex-wrap:wrap;gap:10px 18px;}

/* back to top */
#backTop{
  position:fixed;right:22px;bottom:26px;z-index:900;
  width:46px;height:46px;border-radius:14px;border:1px solid var(--border-bright);
  background:linear-gradient(120deg,var(--accent),var(--accent-2));color:#fff;
  font-size:18px;cursor:pointer;display:none;align-items:center;justify-content:center;
  box-shadow:var(--shadow);
}
#backTop.show{display:flex;}

/* responsive */
@media (max-width:1080px){
  .nav-links{display:none;}
  .hamburger{display:inline-flex;}
  .search-box{display:none;}
  .comic-grid{grid-template-columns:repeat(3,1fr);}
  .layout-with-sidebar{grid-template-columns:1fr;}
  .sidebar{position:static;}
  .char-grid{grid-template-columns:1fr;}
  .notice-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:820px){
  .feature-card{grid-template-columns:1fr;}
  .feature-card img{width:100%;height:200px;}
  .detail-split{grid-template-columns:1fr;}
  .detail-side{position:static;}
  .platform-split,.guide-split,.device-split{grid-template-columns:1fr;}
  .device-imgs img{max-width:100%;width:100%;height:auto;}
  .comment-grid{grid-template-columns:1fr;}
  .feature-squares{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:640px){
  .comic-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .comic-body{padding:12px;}
  .comic-body h3{font-size:14.5px;}
  .comic-meta{font-size:12px;}
  .hero{padding-top:110px;min-height:auto;}
  .hero-logo{width:150px;height:150px;}
  .hero-stats{grid-template-columns:1fr;}
  .notice-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .char-card{flex-direction:column;}
  .char-card img{width:100%;height:auto;flex:0 0 auto;}
  section{padding:46px 0;}
  .btn{padding:9px 15px;font-size:14px;}
}