/* 漫蛙 · 折页海报
   paper #F4F2FA / ink #191731 / indigo #3B2E86 / apricot #F0A03C */

:root{
  --paper:#F4F2FA;
  --white:#FFFFFF;
  --ink:#191731;
  --ink-2:#4B4866;
  --ink-3:#8B87A3;
  --indigo:#3B2E86;
  --indigo-d:#2C2268;
  --apricot:#F0A03C;
  --line:rgba(25,23,49,.14);
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --cut:12px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:15px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
::selection{background:rgba(240,160,60,.35)}

.wrap{width:100%;max-width:1140px;margin:0 auto;padding:0 20px}

/* ---------- 按钮：斜切角 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 28px 0 24px;
  font-size:15px;font-weight:700;letter-spacing:.02em;
  text-decoration:none;white-space:nowrap;
  border:1px solid transparent;
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-fill{background:var(--indigo);color:#fff}
.btn-fill:hover{background:var(--indigo-d)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(25,23,49,.35)}
.btn-ghost:hover{border-color:var(--ink);background:rgba(25,23,49,.04)}
.btn-apricot{background:var(--apricot);color:#221A05}
.btn-apricot:hover{background:#E08F27}
.btn-sm{min-height:40px;font-size:14px;padding:0 20px 0 16px;--cut:10px}
.btn:focus-visible{outline:2px solid var(--apricot);outline-offset:-5px}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
}
.bar{display:flex;align-items:center;gap:12px;min-height:66px}
.mark{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.mark img{width:34px;height:34px;border-radius:2px}
.mark span{font-size:19px;font-weight:800;letter-spacing:.02em}
.nav{display:none;flex:1 1 auto;justify-content:flex-end;gap:24px}
.nav a{
  position:relative;font-size:14px;color:var(--ink-2);text-decoration:none;padding:6px 0;
}
.nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--apricot);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{transform:scaleX(1)}
.bar-cta{margin-left:auto}
.burger{
  order:3;display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;background:transparent;color:var(--ink);
  border:1px solid rgba(25,23,49,.28);cursor:pointer;
}
.burger:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
body.nav-open .nav{
  display:flex;position:fixed;left:0;right:0;top:66px;
  flex-direction:column;align-items:flex-start;gap:0;
  padding:6px 20px 16px;background:#fff;
  border-bottom:1px solid var(--line);
}
body.nav-open .nav a{width:100%;padding:12px 0;border-bottom:1px solid var(--line);font-size:15px}
body.nav-open .nav a::after{display:none}

/* ---------- 首屏 ---------- */
.hero{background:var(--paper);padding:44px 0 54px}
.label{
  display:flex;align-items:center;gap:10px;
  margin:0 0 16px;font-size:12.5px;font-weight:700;letter-spacing:.1em;
  color:var(--indigo);text-transform:uppercase;
}
.label i{display:inline-block;width:34px;height:2px;background:var(--apricot)}
.hero h1{
  margin:0;
  font-size:70px;line-height:.98;font-weight:800;letter-spacing:-.01em;
}
.hero-text{
  margin:22px 0 0;max-width:33ch;
  font-size:15.5px;line-height:1.85;color:var(--ink-2);
}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:8px;
  margin:28px 0 0;padding:0;list-style:none;
}
.hero-facts li{
  font-size:12.5px;color:var(--ink-2);
  border:1px solid var(--line);background:#fff;
  padding:4px 10px;
}

/* 分卷索引 */
.hero-grid{display:grid;grid-template-columns:1fr;gap:30px}
.hero-index{
  border-top:2px solid var(--ink);
  padding-top:12px;
}
.index-cap{
  margin:0 0 10px;font-size:11px;letter-spacing:.16em;color:var(--ink-3);
}
.hero-index ul{margin:0;padding:0;list-style:none}
.hero-index li{
  display:grid;grid-template-columns:30px 1fr auto;align-items:baseline;gap:10px;
  padding:9px 0;border-bottom:1px solid var(--line);
  font-size:14.5px;font-weight:700;
}
.hero-index li span{
  font-size:11px;font-weight:700;color:var(--indigo);letter-spacing:.06em;
}
.hero-index li b{
  font-size:12px;font-weight:400;color:var(--ink-3);
}

/* 截图条 */
.strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;margin-top:38px;align-items:end;
}
.shot{
  position:relative;margin:0;
  background:#fff;border:1px solid var(--line);
  padding:8px 8px 0;
}
.shot img{width:100%}
.shot figcaption{
  padding:10px 2px 11px;
  font-size:11.5px;line-height:1.5;color:var(--ink-2);
  letter-spacing:.02em;
}
.tape{
  position:absolute;z-index:2;
  top:-7px;left:16px;width:46px;height:13px;
  background:var(--apricot);opacity:.92;
  transform:rotate(-6deg);
}

/* ---------- 折页 ---------- */
.fold{padding:52px 0 58px;background:var(--paper)}
.fold-white{
  background:var(--white);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.head{margin-bottom:26px}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:22px;padding:0 8px;
  background:var(--indigo);color:#fff;
  font-size:11px;font-weight:700;letter-spacing:.1em;
  clip-path:polygon(0 0,100% 0,100% 100%,8px 100%,0 calc(100% - 8px));
}
.chip-light{background:var(--apricot);color:#221A05}
.head h2{
  margin:14px 0 0;
  font-size:29px;line-height:1.3;font-weight:800;letter-spacing:-.01em;
}
.sub{margin:10px 0 0;max-width:52ch;font-size:14px;line-height:1.8;color:var(--ink-2)}

/* ---------- 卡片 ---------- */
.cards{display:grid;grid-template-columns:1fr;gap:14px}
.card{
  background:#fff;border:1px solid var(--line);
  padding:18px 18px 20px;
}
.fold-white .card{background:var(--paper)}
.card b{
  display:flex;align-items:center;
  font-size:16.5px;font-weight:800;letter-spacing:.01em;
}
.card b::before{
  content:"";flex:0 0 auto;
  width:8px;height:8px;margin-right:9px;background:var(--apricot);
}
.card p{margin:9px 0 0;font-size:13.5px;line-height:1.8;color:var(--ink-2)}

.cards-2 .quote p{font-size:15.5px;line-height:1.8;color:var(--ink);margin-top:0}
.cards-2 .quote p::before{
  content:"“";display:block;
  font-size:38px;line-height:1;color:var(--apricot);margin-bottom:2px;
}
.cards-2 .quote footer{margin-top:12px;font-size:12px;color:var(--ink-3)}

/* ---------- 更新表 ---------- */
.table{border-top:2px solid var(--ink);max-width:860px}
.thead,
.row{
  display:grid;
  grid-template-columns:46px minmax(0,1fr) auto 52px;
  align-items:baseline;gap:10px;
}
.thead{
  padding:10px 2px;
  font-size:11px;letter-spacing:.14em;color:var(--ink-3);
  border-bottom:1px solid var(--line);
}
.row{
  padding:13px 2px;
  border-bottom:1px solid var(--line);
  transition:background-color .16s ease;
}
.row:hover{background:#fff}
.fold-white .row:hover{background:var(--paper)}
.vol{font-size:11.5px;color:var(--indigo);font-weight:700;letter-spacing:.04em}
.row b{font-size:15.5px;font-weight:700}
.num{font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.day{font-size:12px;color:var(--ink-3);text-align:right}
.foot-note{margin:16px 0 0;font-size:12.5px;color:var(--ink-3)}

/* ---------- 界面 + 在读卡 ---------- */
.duo{display:grid;grid-template-columns:1fr;gap:22px;justify-items:center}
.shot-lg{max-width:420px;width:100%;margin:0 auto}
.shot-lg img{max-width:100%}
.shot-lg figcaption{padding-top:11px}

.read-card{
  margin-top:26px;
  display:grid;grid-template-columns:1fr;gap:16px;
  background:var(--ink);color:#fff;padding:22px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}
.read-card .cover{
  width:100%;max-width:190px;border:1px solid rgba(255,255,255,.18);
  object-fit:cover;object-position:50% 18%;
}
.read-body b{display:block;margin-top:8px;font-size:19px;font-weight:800;letter-spacing:.02em}
.meta{display:block;margin-top:2px;font-size:12.5px;color:rgba(255,255,255,.62)}
.track{
  display:block;height:4px;margin:14px 0 0;
  background:rgba(255,255,255,.2);overflow:hidden;
}
.track i{display:block;width:70%;height:100%;background:var(--apricot)}
.read-body p{margin:14px 0 0;font-size:12.5px;line-height:1.75;color:rgba(255,255,255,.7)}
.card-side{
  display:none;margin:0;padding:0;list-style:none;
  border-left:1px solid rgba(255,255,255,.16);padding-left:26px;
}
.card-side li{
  position:relative;
  font-size:13px;line-height:1.7;color:rgba(255,255,255,.8);
  padding-left:16px;margin-bottom:10px;
}
.card-side li::before{
  content:"";position:absolute;left:0;top:.6em;
  width:7px;height:7px;background:var(--apricot);
}
.tag{
  display:inline-block;font-size:10.5px;letter-spacing:.14em;color:var(--apricot);
  border:1px solid rgba(240,160,60,.5);padding:0 6px;
}

/* ---------- 问答 ---------- */
.qa details{border-top:1px solid var(--line)}
.qa summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 2px;cursor:pointer;list-style:none;
  font-size:15px;font-weight:700;
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{
  content:"+";flex:0 0 auto;
  width:22px;height:22px;line-height:19px;text-align:center;
  font-size:15px;font-weight:700;color:var(--indigo);
  border:1px solid var(--line);background:#fff;
}
details[open] summary::after{content:"−"}
.qa details p{
  margin:0;padding:0 34px 18px 2px;
  font-size:13.5px;line-height:1.8;color:var(--ink-2);
}

/* ---------- 下载 ---------- */
.download{
  background:var(--indigo);color:#fff;
  padding:56px 0 60px;
}
.dl-inner{display:grid;grid-template-columns:1fr;gap:26px}
.dl-inner h2{
  margin:14px 0 0;font-size:29px;line-height:1.32;font-weight:800;letter-spacing:-.01em;
}
.dl-inner p{margin:12px 0 0;max-width:42ch;font-size:14px;line-height:1.8;color:rgba(255,255,255,.76)}
.dl-side{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.dl-meta{font-size:12.5px;color:rgba(255,255,255,.6)}

/* ---------- 页脚 ---------- */
.foot{background:var(--paper);padding:26px 0 34px;border-top:1px solid var(--line)}
.foot-inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px}
.foot-mark{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:800}
.foot-mark img{width:22px;height:22px}
.foot-note{margin:0;font-size:12.5px;color:var(--ink-3)}
.foot-copy{margin:0 0 0 auto;font-size:12px;color:var(--ink-3)}

/* ---------- 600 ---------- */
@media (min-width:600px){
  .wrap{padding:0 28px}
  .hero{padding:56px 0 64px}
  .hero h1{font-size:84px}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fold{padding:60px 0 66px}
  .head h2{font-size:32px}
  .read-card{grid-template-columns:190px minmax(0,1fr);align-items:center}
  .read-card .cover{width:190px;height:190px;max-width:none}
  .duo{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .shot-lg{max-width:330px}
  .row{grid-template-columns:62px minmax(0,1fr) auto 60px}
}

/* ---------- 900 ---------- */
@media (min-width:900px){
  .nav{display:flex}
  .burger{display:none}
  .mark span{font-size:20px}
  .hero-grid{grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
  .hero h1{font-size:96px}
  .strip{gap:20px}
  .shot figcaption{font-size:12px;padding:11px 2px 12px}
  .cards{gap:18px}
  .cards-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .duo{gap:28px;align-items:end}
  .shot-lg{max-width:370px;width:100%;margin:0}
  .shot-lg img{max-height:none;width:100%}
  .read-card{grid-template-columns:190px minmax(0,1fr) minmax(0,260px)}
  .card-side{display:block}
  .dl-inner{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:40px}
  .dl-side{align-items:flex-end}
  .dl-inner h2{font-size:34px}
}

/* ---------- 1100 ---------- */
@media (min-width:1100px){
  .cards{gap:20px}
  .card{padding:22px 24px 24px}
  .cards-3{grid-template-columns:repeat(3,minmax(0,1fr))}
}