:root{
  --bg-start:#0b0b18;
  --bg-end:#15152c;
  --card:#1a1a36;
  --card-2:#20204a;
  --border:#2e2e58;
  --text:#e9e9f4;
  --title:#f2f2ff;
  --accent:#7c5cff;
  --accent-2:#9d7cff;
  --link:#b9a4ff;
  --link-hover:#d9ccff;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --radius:16px;
}
html[data-theme="light"]{
  --bg-start:#f6f8ff;
  --bg-end:#eef2fb;
  --card:#ffffff;
  --card-2:#f2f5ff;
  --border:rgba(40,62,100,.13);
  --text:#142033;
  --title:#0d0820;
  --accent:#6c4df6;
  --accent-2:#1fb9d6;
  --link:#5b3fe0;
  --link-hover:#1a0f6b;
  --shadow:0 10px 30px rgba(40,62,100,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:linear-gradient(160deg,var(--bg-start) 0%,var(--bg-end) 100%);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  transition:background .3s ease,color .3s ease;
}
a{color:var(--link);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--link-hover);text-decoration:underline}
img{max-width:100%;display:block;border-radius:10px;background:var(--card-2)}
h1,h2,h3,h4{color:var(--title);line-height:1.3;font-weight:800}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}

/* 阅读进度条 */
#progress-bar{
  position:fixed;top:0;left:0;height:3px;width:0%;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  z-index:1200;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:border-color .3s ease,box-shadow .3s ease,background .3s ease;
}
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 8px 24px rgba(0,0,0,.35);
}
html[data-theme="light"] header.site-header.scrolled{box-shadow:0 8px 24px rgba(40,62,100,.14)}
.nav-inner{
  display:flex;align-items:center;gap:18px;
  height:68px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-weight:900;font-size:17px;color:var(--title);
  white-space:nowrap;flex-shrink:0;
}
.logo:hover{text-decoration:none;color:var(--title)}
.logo .logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:18px;font-weight:900;flex-shrink:0;
}
.logo .logo-text{max-width:230px;overflow:hidden;text-overflow:ellipsis}
.nav-links{
  display:flex;align-items:center;gap:4px;
  list-style:none;margin-left:6px;flex:1;
}
.nav-links a{
  color:var(--text);font-size:14px;font-weight:600;
  padding:8px 11px;border-radius:9px;white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-links a:hover{
  background:rgba(124,92,255,.16);
  color:var(--link-hover);text-decoration:none;
}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.search-box{
  display:flex;align-items:center;
  background:var(--card);border:1px solid var(--border);
  border-radius:10px;padding:0 10px;height:38px;
}
.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(--accent-2);font-size:15px;padding:0 2px;
}
.theme-btn{
  height:38px;min-width:38px;padding:0 10px;
  border-radius:10px;cursor:pointer;
  background:var(--card);border:1px solid var(--border);
  color:var(--text);font-size:15px;font-family:inherit;
  transition:border-color .2s ease,transform .2s ease;
}
.theme-btn:hover{border-color:var(--accent);transform:translateY(-1px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:10px 20px;border-radius:11px;font-size:14px;font-weight:700;
  cursor:pointer;border:1px solid transparent;font-family:inherit;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;box-shadow:0 6px 18px rgba(124,92,255,.4);
}
.btn-primary:hover{color:#fff;box-shadow:0 10px 26px rgba(124,92,255,.55)}
.btn-ghost{
  background:var(--card);color:var(--text);border-color:var(--border);
}
.btn-ghost:hover{color:var(--link-hover);border-color:var(--accent)}
.hamburger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:38px;border-radius:10px;cursor:pointer;
  background:var(--card);border:1px solid var(--border);
}
.hamburger span{
  display:block;height:2px;width:18px;margin:0 auto;
  background:var(--text);border-radius:2px;transition:.3s ease;
}
.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;
  background:rgba(11,11,24,.97);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  padding:12px 20px 20px;
}
html[data-theme="light"] .mobile-menu{background:rgba(246,248,255,.98)}
.mobile-menu.open{display:flex}
.mobile-menu a{
  color:var(--text);font-size:15px;font-weight:600;
  padding:12px 6px;border-bottom:1px solid var(--border);
}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a:hover{color:var(--link-hover);text-decoration:none}

/* Hero */
.hero{
  min-height:76vh;display:flex;align-items:center;justify-content:center;
  text-align:center;padding:130px 20px 70px;position:relative;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);
  width:760px;height:760px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,92,255,.28),transparent 65%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:880px;margin:0 auto}
.hero-logo{
  width:200px;height:200px;border-radius:44px;margin:0 auto 26px;
  box-shadow:0 20px 50px rgba(124,92,255,.45);
  border:2px solid var(--border);
}
.hero h1{
  font-size:clamp(26px,4.4vw,46px);
  letter-spacing:1px;margin-bottom:16px;
}
.hero .slogan{
  font-size:clamp(15px,2vw,19px);color:var(--accent-2);
  font-weight:700;margin-bottom:18px;letter-spacing:.5px;
}
.hero p.desc{
  font-size:15px;max-width:720px;margin:0 auto 30px;
  color:var(--text);opacity:.92;
}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:46px}
.hero-stats{
  display:flex;gap:16px;justify-content:center;flex-wrap:wrap;
}
.stat{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:16px 30px;min-width:150px;
  transition:transform .25s ease,border-color .25s ease;
}
.stat:hover{transform:translateY(-4px);border-color:var(--accent)}
.stat .num{
  font-size:26px;font-weight:900;color:var(--accent-2);
  display:block;line-height:1.2;
}
.stat .lbl{font-size:13px;opacity:.85}

/* 通用区块 */
section.block{padding:64px 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(21px,3vw,30px);position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:5px;
  border-radius:4px;background:linear-gradient(180deg,var(--accent),var(--accent-2));
}
.section-head .sub{font-size:14px;opacity:.82}

/* 热门漫画网格 */
.grid-comics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
}
.comic-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;position:relative;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.comic-card:hover{
  transform:translateY(-8px);border-color:var(--accent);
  box-shadow:var(--shadow);
}
.comic-cover{position:relative;overflow:hidden}
.comic-cover img{
  width:100%;height:auto;aspect-ratio:220/310;object-fit:cover;
  border-radius:0;transition:transform .4s ease;
}
.comic-card:hover .comic-cover img{transform:scale(1.06)}
.badge{
  position:absolute;font-size:11px;font-weight:800;
  padding:4px 9px;border-radius:8px;color:#fff;letter-spacing:.4px;
}
.badge-status{top:10px;left:10px;background:linear-gradient(135deg,#7c5cff,#9d7cff)}
.badge-status.done{background:linear-gradient(135deg,#1fb9d6,#3d8bff)}
.badge-read{
  bottom:10px;right:10px;background:rgba(11,11,24,.78);
  border:1px solid var(--border);color:#e9e9f4;
}
.comic-info{padding:14px 14px 16px}
.comic-info h3{font-size:15px;margin-bottom:9px}
.comic-meta{font-size:12.5px;line-height:1.85;opacity:.9}
.comic-meta span{display:block}
.comic-meta b{color:var(--accent-2);font-weight:700}
.tag-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.tag{
  font-size:11px;padding:3px 9px;border-radius:20px;
  background:rgba(124,92,255,.16);color:var(--link);
  border:1px solid rgba(124,92,255,.3);font-weight:600;
}

/* 精品推荐 */
.feature-list{display:flex;flex-direction:column;gap:22px}
.feature-card{
  display:grid;grid-template-columns:300px 1fr;gap:24px;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:20px;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.feature-card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:var(--shadow)}
.feature-card img{width:300px;height:200px;object-fit:cover}
.feature-body h3{font-size:19px;margin-bottom:10px}
.feature-body p{font-size:14px;margin-bottom:12px;opacity:.93}
.feature-info{font-size:13px;display:flex;gap:18px;flex-wrap:wrap;margin-bottom:12px;opacity:.9}
.feature-info b{color:var(--accent-2)}

/* 漫画详细介绍 */
.detail-wrap{
  display:grid;grid-template-columns:300px 1fr;gap:30px;
  align-items:start;
}
.detail-side{
  background:linear-gradient(160deg,var(--card-2),var(--card));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 26px;position:sticky;top:96px;
}
.detail-side .big-num{
  font-size:74px;font-weight:900;line-height:1;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:14px;
}
.detail-side .summary{font-size:15px;font-weight:700;color:var(--title);margin-bottom:16px}
.detail-side .mini{font-size:13px;opacity:.88;line-height:2}
.detail-body h2{font-size:26px;margin-bottom:18px}
.detail-body h3{font-size:17px;margin:24px 0 10px}
.detail-body p{font-size:14.5px;margin-bottom:14px;opacity:.94}
.detail-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.detail-tags .tag{font-size:12.5px;padding:6px 14px}

/* 角色 */
.role-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.role-card{
  display:grid;grid-template-columns:180px 1fr;gap:20px;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.role-card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:var(--shadow)}
.role-card img{width:180px;height:180px;object-fit:cover;border-radius:14px}
.role-body h3{font-size:17px;margin-bottom:8px}
.role-role{
  display:inline-block;font-size:12px;font-weight:700;
  padding:3px 11px;border-radius:20px;margin-bottom:10px;
  background:rgba(31,185,214,.16);color:var(--accent-2);
  border:1px solid rgba(31,185,214,.35);
}
.role-body p{font-size:13.5px;opacity:.93;margin-bottom:8px}
.role-body p b{color:var(--accent-2)}

/* 平台介绍 */
.platform-wrap{display:grid;grid-template-columns:1.35fr 1fr;gap:30px;align-items:start}
.platform-text p{font-size:14.5px;margin-bottom:14px;opacity:.94}
.step-list{display:flex;flex-direction:column;gap:16px}
.step-item{
  display:flex;gap:14px;background:var(--card);
  border:1px solid var(--border);border-radius:14px;padding:16px;
  transition:border-color .25s ease,transform .25s ease;
}
.step-item:hover{border-color:var(--accent);transform:translateX(5px)}
.step-num{
  flex-shrink:0;width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;font-weight:900;display:flex;align-items:center;justify-content:center;
  font-size:15px;
}
.step-item h3{font-size:15px;margin-bottom:5px}
.step-item p{font-size:13px;opacity:.9}
.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:13px;padding:18px;text-align:center;
  transition:transform .25s ease,border-color .25s ease;
}
.square:hover{transform:translateY(-4px);border-color:var(--accent)}
.square .ico{font-size:22px;margin-bottom:8px;display:block}
.square h3{font-size:14px;margin-bottom:5px}
.square p{font-size:12.5px;opacity:.88}

/* 多端同步 */
.sync-wrap{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.sync-text p{font-size:14.5px;margin-bottom:14px;opacity:.94}
.sync-imgs{display:flex;gap:20px;justify-content:center;align-items:flex-end;flex-wrap:wrap}
.sync-imgs img{width:400px;height:600px;object-fit:cover;max-width:100%}
.sync-imgs .phone-frame{width:210px;height:420px}
.sync-imgs .pad-frame{width:290px;height:420px}

/* 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:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.notice-card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:var(--shadow)}
.notice-date{
  font-size:12px;font-weight:700;color:var(--accent-2);margin-bottom:9px;
  display:inline-block;padding:3px 10px;border-radius:20px;
  background:rgba(124,92,255,.14);
}
.notice-card h3{font-size:15.5px;margin-bottom:9px}
.notice-card p{font-size:13px;opacity:.9}

/* 阅读指南 */
.guide-wrap{display:grid;grid-template-columns:1.3fr 1fr;gap:30px;align-items:start}
.guide-text p{font-size:14.5px;margin-bottom:14px;opacity:.94}
.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:12px;padding:14px 16px;font-size:13.5px;
  transition:border-color .25s ease;
}
.check-item:hover{border-color:var(--accent)}
.check-item .check{
  flex-shrink:0;width:22px;height:22px;border-radius:6px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;font-size:13px;font-weight:900;
  display:flex;align-items:center;justify-content:center;
}

/* APP下载 */
.app-section{text-align:center}
.app-section .app-inner{max-width:760px;margin:0 auto}
.app-section h2{font-size:clamp(22px,3vw,30px);margin-bottom:16px}
.app-section p{font-size:14.5px;opacity:.94;margin-bottom:28px}
.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:transform .25s ease,border-color .25s ease;
}
.comment-card:hover{transform:translateY(-4px);border-color:var(--accent)}
.comment-head{display:flex;align-items:center;gap:12px;margin-bottom:11px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:900;font-size:15px;
}
.comment-user{font-size:14px;font-weight:700;color:var(--title)}
.comment-time{font-size:12px;opacity:.72}
.comment-card p{font-size:13.5px;opacity:.93}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;overflow:hidden;
  transition:border-color .25s ease;
}
.faq-item.open{border-color:var(--accent)}
.faq-q{
  width:100%;text-align:left;background:transparent;border:none;
  color:var(--title);font-size:15px;font-weight:700;
  padding:18px 22px;cursor:pointer;font-family:inherit;
  display:flex;justify-content:space-between;align-items:center;gap:14px;
}
.faq-q .arrow{
  flex-shrink:0;font-size:15px;color:var(--accent-2);
  transition:transform .3s ease;
}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-a-inner{padding:0 22px 20px;font-size:13.8px;opacity:.93}

/* 侧边栏布局 */
.main-with-side{display:grid;grid-template-columns:1fr 330px;gap:30px;align-items:start}
.side-col{display:flex;flex-direction:column;gap:22px}
.side-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:20px;
}
.side-card h3{
  font-size:16px;margin-bottom:14px;padding-bottom:11px;
  border-bottom:1px solid var(--border);
}
.rank-list{list-style:none;display:flex;flex-direction:column;gap:11px}
.rank-list li{display:flex;gap:11px;align-items:center;font-size:13.5px}
.rank-num{
  flex-shrink:0;width:24px;height:24px;border-radius:7px;
  background:var(--card-2);border:1px solid var(--border);
  color:var(--text);font-size:12px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.rank-list li:nth-child(1) .rank-num{background:linear-gradient(135deg,#ff8a3d,#ff5c5c);color:#fff;border-color:transparent}
.rank-list li:nth-child(2) .rank-num{background:linear-gradient(135deg,#7c5cff,#9d7cff);color:#fff;border-color:transparent}
.rank-list li:nth-child(3) .rank-num{background:linear-gradient(135deg,#1fb9d6,#3d8bff);color:#fff;border-color:transparent}
.rank-list a{color:var(--text);font-weight:600}
.rank-list a:hover{color:var(--link-hover)}
.stat-list{display:flex;flex-direction:column;gap:12px}
.stat-row{
  display:flex;justify-content:space-between;align-items:center;
  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(--accent-2);font-weight:800}

/* 返回顶部 */
#back-top{
  position:fixed;right:24px;bottom:28px;z-index:900;
  width:46px;height:46px;border-radius:14px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;border:none;cursor:pointer;font-size:19px;
  box-shadow:0 8px 24px rgba(124,92,255,.5);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:all .3s ease;
}
#back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
#back-top:hover{transform:translateY(-4px)}

/* 页脚 */
footer.site-footer{
  background:var(--card);border-top:1px solid var(--border);
  padding:56px 0 26px;margin-top:40px;
}
.footer-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:38px;
}
.footer-col h3{font-size:15px;margin-bottom:15px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.footer-col a{font-size:13.5px;color:var(--text);opacity:.9}
.footer-col a:hover{color:var(--link-hover);opacity:1}
.friend-links{
  padding:20px 0;border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);margin-bottom:22px;
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;
}
.friend-links span{font-size:13px;font-weight:700;color:var(--title)}
.friend-links a{font-size:13px}
.footer-bottom{
  text-align:center;font-size:12.8px;opacity:.88;line-height:2;
}
.footer-bottom .links a{margin:0 8px}

/* 响应式 */
@media (max-width:1080px){
  .nav-links{display:none}
  .search-box{display:none}
  .hamburger{display:flex}
  .grid-comics{grid-template-columns:repeat(3,1fr)}
  .main-with-side{grid-template-columns:1fr}
  .side-col{flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 300px}
  .detail-side{position:static}
}
@media (max-width:900px){
  .feature-card{grid-template-columns:1fr}
  .feature-card img{width:100%;height:auto;aspect-ratio:300/200}
  .detail-wrap{grid-template-columns:1fr}
  .role-grid{grid-template-columns:1fr}
  .platform-wrap{grid-template-columns:1fr}
  .sync-wrap{grid-template-columns:1fr}
  .guide-wrap{grid-template-columns:1fr}
  .notice-grid{grid-template-columns:repeat(2,1fr)}
  .comment-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .feature-squares{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .grid-comics{grid-template-columns:repeat(2,1fr);gap:14px}
  .comic-info{padding:11px 11px 13px}
  .comic-info h3{font-size:13.5px}
  .comic-meta{font-size:11.5px}
  .role-card{grid-template-columns:1fr}
  .role-card img{width:100%;height:auto;aspect-ratio:1/1}
  .notice-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .feature-squares{grid-template-columns:1fr}
  .hero-stats{gap:10px}
  .stat{padding:13px 18px;min-width:120px}
  .stat .num{font-size:21px}
  .sync-imgs .phone-frame{width:150px;height:300px}
  .sync-imgs .pad-frame{width:210px;height:300px}
  #back-top{right:14px;bottom:16px;width:42px;height:42px}
  section.block{padding:46px 0}
}