:root{
  --bg1:#0b0b18;
  --bg2:#15152c;
  --card:#1a1a36;
  --border:#2e2e58;
  --text:#e9e9f4;
  --title:#f2f2ff;
  --accent:#7c5cff;
  --accent2:#9d7cff;
  --link:#a99bff;
  --link-hover:#c9beff;
  --shadow:rgba(0,0,0,.45);
}
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:#5a3ce0;
  --link-hover:#1a0f8f;
  --shadow:rgba(30,50,90,.14);
}
*{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(160deg,var(--bg1),var(--bg2));
  color:var(--text);
  line-height:1.7;
  min-height:100vh;
  transition:background .35s ease,color .35s ease;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--link);text-decoration:none;transition:color .2s;}
a:hover{color:var(--link-hover);text-decoration:underline;}
h1,h2,h3{color:var(--title);line-height:1.3;}

/* progress bar */
#progressBar{
  position:fixed;top:0;left:0;height:3px;width:0%;
  background:linear-gradient(90deg,var(--accent),var(--accent2));
  z-index:1200;transition:width .1s linear;
}

/* header */
header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(20,20,40,.55);
  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{background:rgba(255,255,255,.72);}
header.scrolled{
  box-shadow:0 6px 24px var(--shadow);
  border-bottom:1px solid var(--border);
}
.nav-wrap{
  max-width:1280px;margin:0 auto;
  display:flex;align-items:center;gap:18px;
  padding:12px 20px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:800;color:var(--title);
  white-space:nowrap;
}
.logo:hover{text-decoration:none;color:var(--title);}
.logo-badge{
  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;color:#fff;font-weight:900;flex-shrink:0;
}
nav.main-nav{flex:1;}
nav.main-nav ul{
  display:flex;gap:6px;list-style:none;flex-wrap:wrap;
}
nav.main-nav a{
  display:block;padding:8px 12px;border-radius:9px;
  font-size:14.5px;color:var(--text);font-weight:500;
}
nav.main-nav a:hover{
  background:rgba(124,92,255,.18);color:var(--title);text-decoration:none;
}
.nav-right{display:flex;align-items:center;gap:10px;}
.search-box{
  display:flex;align-items:center;
  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:14px;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:15px;padding:2px 4px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:6px;border-radius:10px;padding:9px 18px;
  font-size:14.5px;font-weight:700;cursor:pointer;
  border:1px solid transparent;font-family:inherit;
  transition:transform .2s,box-shadow .2s,background .2s;
}
.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;border:1px solid var(--border);color:var(--text);
}
.btn-ghost:hover{color:var(--title);border-color:var(--accent2);}
.theme-btn{
  width:40px;height:40px;border-radius:10px;
  background:var(--card);border:1px solid var(--border);
  color:var(--text);font-size:17px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:border-color .2s,transform .2s;
}
.theme-btn:hover{border-color:var(--accent2);transform:translateY(-2px);}
.hamburger{
  display:none;width:42px;height:42px;border-radius:10px;
  background:var(--card);border:1px solid var(--border);
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.hamburger span{
  display:block;width:20px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .3s,opacity .3s;
}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.open span:nth-child(2){opacity:0;}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* mobile menu */
.mobile-menu{
  display:none;flex-direction:column;gap:4px;
  padding:0 20px 16px;
  border-top:1px solid var(--border);
}
.mobile-menu.open{display:flex;}
.mobile-menu a{
  padding:11px 12px;border-radius:9px;color:var(--text);font-weight:500;
}
.mobile-menu a:hover{background:rgba(124,92,255,.18);text-decoration:none;color:var(--title);}
.mobile-menu .search-box{width:100%;margin-top:8px;}
.mobile-menu .search-box input{width:100%;}

/* layout */
main{max-width:1280px;margin:0 auto;padding:0 20px;}
section{padding:56px 0;}
.section-head{margin-bottom:28px;}
.section-head h2{
  font-size:26px;font-weight:800;margin-bottom:8px;
  display:flex;align-items:center;gap:10px;
}
.section-head h2::before{
  content:"";width:6px;height:24px;border-radius:4px;
  background:linear-gradient(180deg,var(--accent),var(--accent2));
}
.section-head p{font-size:14.5px;opacity:.85;}

/* hero */
.hero{
  min-height:76vh;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;
  padding:130px 20px 60px;
}
.hero-logo{
  width:200px;height:200px;border-radius:36px;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:14px;
  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:700;margin-bottom:16px;
}
.hero .intro{
  max-width:760px;font-size:15px;opacity:.9;margin-bottom:30px;
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:44px;}
.hero-stats{
  display:flex;gap:44px;flex-wrap:wrap;justify-content:center;
}
.hero-stats .stat{text-align:center;}
.hero-stats .num{
  font-size:28px;font-weight:900;color:var(--accent2);
}
.hero-stats .lbl{font-size:13.5px;opacity:.85;}

/* comic grid */
.comic-grid{
  display:grid;gap:20px;
  grid-template-columns:repeat(4,1fr);
}
.comic-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:16px;overflow:hidden;position:relative;
  transition:transform .28s,box-shadow .28s,border-color .28s;
}
.comic-card:hover{
  transform:translateY(-8px);
  border-color:var(--accent2);
  box-shadow:0 16px 36px var(--shadow);
}
.comic-cover{position:relative;}
.comic-cover img{width:100%;height:auto;aspect-ratio:220/310;object-fit:cover;}
.badge{
  position:absolute;top:10px;padding:3px 10px;border-radius:20px;
  font-size:11.5px;font-weight:700;color:#fff;
}
.badge-status{left:10px;background:linear-gradient(135deg,#ff5c8a,#ff8a5c);}
.badge-status.done{background:linear-gradient(135deg,#3aa0ff,#1fb9d6);}
.badge-read{right:10px;background:rgba(11,11,24,.72);border:1px solid var(--border);}
.comic-info{padding:14px;}
.comic-info h3{font-size:15.5px;font-weight:800;margin-bottom:8px;}
.comic-meta{font-size:12.8px;opacity:.88;line-height:1.9;}
.comic-meta b{color:var(--accent2);font-weight:700;}

/* featured */
.featured-list{display:flex;flex-direction:column;gap:20px;}
.featured-card{
  display:flex;gap:20px;background:var(--card);
  border:1px solid var(--border);border-radius:18px;
  padding:18px;transition:transform .28s,border-color .28s,box-shadow .28s;
}
.featured-card:hover{
  transform:translateY(-5px);border-color:var(--accent2);
  box-shadow:0 14px 32px var(--shadow);
}
.featured-card img{
  width:300px;height:200px;border-radius:12px;object-fit:cover;flex-shrink:0;
}
.featured-body h3{font-size:19px;font-weight:800;margin-bottom:10px;}
.featured-body p{font-size:14px;opacity:.9;margin-bottom:12px;}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;}
.tag{
  font-size:12px;padding:3px 11px;border-radius:20px;
  background:rgba(124,92,255,.16);color:var(--accent2);
  border:1px solid var(--border);font-weight:600;
}

/* detail split */
.detail-split{display:grid;grid-template-columns:320px 1fr;gap:0;border-radius:20px;overflow:hidden;border:1px solid var(--border);}
.detail-side{
  background:linear-gradient(160deg,rgba(124,92,255,.22),rgba(31,185,214,.14));
  padding:36px 28px;display:flex;flex-direction:column;justify-content:center;
}
.detail-side .num{
  font-size:76px;font-weight:900;color:var(--accent2);line-height:1;
  margin-bottom:16px;
}
.detail-side p{font-size:15px;font-weight:600;opacity:.95;}
.detail-body{
  background:var(--card);padding:34px 32px;font-size:15px;
}
.detail-body h3{font-size:18px;margin:22px 0 10px;}
.detail-body h3:first-child{margin-top:0;}
.detail-body p{margin-bottom:14px;opacity:.92;}
.detail-tags{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px;}
.detail-tags span{
  padding:6px 16px;border-radius:20px;font-size:13px;font-weight:700;
  background:rgba(124,92,255,.16);border:1px solid var(--border);color:var(--accent2);
}

/* 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:transform .28s,border-color .28s;
}
.char-card:hover{transform:translateY(-5px);border-color:var(--accent2);}
.char-card img{
  width:180px;height:180px;border-radius:14px;object-fit:cover;flex-shrink:0;
}
.char-body h3{font-size:17px;font-weight:800;margin-bottom:6px;}
.char-role{
  display:inline-block;font-size:12px;font-weight:700;
  padding:2px 10px;border-radius:20px;margin-bottom:10px;
  background:rgba(31,185,214,.16);color:var(--accent2);border:1px solid var(--border);
}
.char-body p{font-size:13.8px;opacity:.9;margin-bottom:6px;}

/* platform */
.platform-split{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;}
.platform-text{font-size:15px;}
.platform-text p{margin-bottom:14px;opacity:.92;}
.step-list{display:flex;flex-direction:column;gap:14px;}
.step-item{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:16px;
}
.step-num{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;font-weight:900;font-size:15px;
  display:flex;align-items:center;justify-content:center;
}
.step-item h3{font-size:15px;margin-bottom:4px;}
.step-item p{font-size:13.5px;opacity:.9;}
.feature-squares{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px;
}
.square{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:18px;text-align:center;
  transition:transform .25s,border-color .25s;
}
.square:hover{transform:translateY(-5px);border-color:var(--accent2);}
.square .ico{font-size:24px;margin-bottom:8px;}
.square h3{font-size:14.5px;margin-bottom:5px;}
.square p{font-size:12.8px;opacity:.88;}

/* sync */
.sync-split{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;}
.sync-split img{width:100%;border-radius:18px;border:1px solid var(--border);}
.sync-text p{font-size:15px;margin-bottom:14px;opacity:.92;}

/* notice */
.notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.notice-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:20px;transition:transform .25s,border-color .25s;
}
.notice-card:hover{transform:translateY(-5px);border-color:var(--accent2);}
.notice-date{font-size:12.5px;color:var(--accent2);font-weight:700;margin-bottom:8px;}
.notice-card h3{font-size:15.5px;margin-bottom:8px;}
.notice-card p{font-size:13.5px;opacity:.9;}

/* guide */
.guide-split{display:grid;grid-template-columns:1.3fr 1fr;gap:32px;}
.guide-split p{font-size:15px;margin-bottom:14px;opacity:.92;}
.check-list{display:flex;flex-direction:column;gap:12px;}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:15px;
}
.check-item .tick{
  width:24px;height:24px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;font-size:13px;font-weight:900;
  display:flex;align-items:center;justify-content:center;
}
.check-item p{font-size:13.8px;margin:0;opacity:.92;}

/* app download */
.app-section{text-align:center;}
.app-section p.app-intro{
  max-width:720px;margin:0 auto 28px;font-size:15px;opacity:.92;
}
.app-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* 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;transition:border-color .25s;
}
.comment-card:hover{border-color:var(--accent2);}
.comment-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;gap:10px;}
.comment-user{font-size:14.5px;font-weight:800;color:var(--title);}
.comment-time{font-size:12.5px;opacity:.7;}
.comment-card p{font-size:13.8px;opacity:.92;}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;overflow:hidden;transition:border-color .25s;
}
.faq-item.open{border-color:var(--accent2);}
.faq-q{
  width:100%;text-align:left;background:transparent;border:none;
  padding:18px 20px;font-size:15.5px;font-weight:700;color:var(--title);
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;
  gap:14px;font-family:inherit;
}
.faq-q .arrow{transition:transform .3s;color:var(--accent2);font-size:14px;}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;
  padding:0 20px;font-size:14px;opacity:.92;
}
.faq-item.open .faq-a{padding:0 20px 18px;max-height:400px;}

/* sidebar layout */
.content-with-side{display:grid;grid-template-columns:1fr 320px;gap:32px;}
.sidebar{display:flex;flex-direction:column;gap:22px;}
.side-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:20px;
}
.side-card h2{font-size:16.5px;margin-bottom:14px;font-weight:800;}
.rank-list{list-style:none;display:flex;flex-direction:column;gap:10px;}
.rank-list li{display:flex;gap:10px;align-items:center;font-size:14px;}
.rank-num{
  width:24px;height:24px;border-radius:8px;flex-shrink:0;
  background:rgba(124,92,255,.18);color:var(--accent2);
  font-size:12.5px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.rank-list li:nth-child(-n+3) .rank-num{
  background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;
}
.rank-list a{color:var(--text);font-weight:500;}
.rank-list a:hover{color:var(--accent2);}
.stat-list{display:flex;flex-direction:column;gap:12px;}
.stat-row{display:flex;justify-content:space-between;font-size:14px;}
.stat-row b{color:var(--accent2);font-weight:800;}

/* footer */
footer{
  border-top:1px solid var(--border);margin-top:40px;
  background:rgba(0,0,0,.14);
}
html[data-theme="light"] footer{background:rgba(255,255,255,.5);}
.footer-wrap{max-width:1280px;margin:0 auto;padding:48px 20px 20px;}
.footer-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-bottom:34px;}
.footer-col h3{font-size:15.5px;margin-bottom:14px;font-weight:800;}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:9px;}
.footer-col a{font-size:13.8px;color:var(--text);opacity:.88;}
.footer-col a:hover{opacity:1;color:var(--accent2);}
.friend-links{
  display:flex;flex-wrap:wrap;gap:10px 18px;
  padding:18px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  margin-bottom:20px;font-size:13.5px;
}
.copyright{font-size:13.2px;opacity:.82;text-align:center;line-height:2;}
.copyright a{opacity:1;}
.footer-legal{
  display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:10px;font-size:13px;
}

/* back to top */
#backTop{
  position:fixed;right:24px;bottom:28px;width:48px;height:48px;
  border-radius:14px;border:1px solid var(--border);
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;font-size:20px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(16px);
  transition:opacity .3s,transform .3s,visibility .3s;
  z-index:1100;box-shadow:0 10px 26px rgba(124,92,255,.4);
}
#backTop.show{opacity:1;visibility:visible;transform:translateY(0);}
#backTop:hover{transform:translateY(-4px);}

/* responsive */
@media(max-width:1080px){
  .comic-grid{grid-template-columns:repeat(3,1fr);}
  .content-with-side{grid-template-columns:1fr;}
  .sidebar{position:static;}
  .notice-grid{grid-template-columns:repeat(2,1fr);}
  .feature-squares{grid-template-columns:repeat(3,1fr);}
}
@media(max-width:900px){
  nav.main-nav{display:none;}
  .nav-right .search-box{display:none;}
  .nav-right .btn-primary{display:none;}
  .hamburger{display:flex;}
  .featured-card{flex-direction:column;}
  .featured-card img{width:100%;height:auto;aspect-ratio:300/200;}
  .detail-split{grid-template-columns:1fr;}
  .char-grid{grid-template-columns:1fr;}
  .platform-split,.sync-split,.guide-split{grid-template-columns:1fr;}
  .footer-cols{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:640px){
  .comic-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .comment-grid{grid-template-columns:1fr;}
  .notice-grid{grid-template-columns:1fr;}
  .feature-squares{grid-template-columns:repeat(2,1fr);}
  .char-card{flex-direction:column;align-items:center;text-align:center;}
  .hero-stats{gap:26px;}
  .footer-cols{grid-template-columns:1fr;}
  .detail-body{padding:24px 20px;}
  .detail-side{padding:28px 22px;}
  .detail-side .num{font-size:56px;}
  section{padding:42px 0;}
}