/* 51漫画 · 51comic2027.com.cn
   黄黑。暖白底、明黄块、纯黑字。卡片白底小圆角，斜切只用在标签上。 */

:root{
  --bg:#FFFDF6;
  --ink:#14110B;
  --body:#4C463A;
  --dim:#8C8578;
  --brand:#FFC800;
  --accent:#FF4E5B;
  --line:#EDE5D2;
  --tint:#FFF7DE;
  --sh:0 12px 30px -24px rgba(40,32,10,.55);
  --w:1140px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.7 "PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:inherit}
h1,h2,h3,p,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}

.wrap{max-width:var(--w);margin:0 auto;padding:0 32px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 14px;border-radius:8px}

/* ---------- 顶栏 ---------- */
.top{
  position:sticky;top:0;z-index:50;
  background:rgba(255,253,246,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(1.4) blur(10px);
}
.top.on{box-shadow:0 8px 24px -22px rgba(40,30,0,.6)}
.top-in{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}
.brand img{width:40px;height:40px;border-radius:10px;display:block}
.brand b{font-size:17px;font-weight:800;letter-spacing:-.01em}
.top nav{display:flex;gap:26px}
.top nav a{font-size:14px;color:var(--body);text-decoration:none;transition:color .18s}
.top nav a:hover{color:var(--ink)}
.top-cta{
  margin-left:auto;height:40px;padding:0 20px;border-radius:9px;
  background:var(--ink);color:var(--brand);
  font-size:13.5px;font-weight:700;text-decoration:none;
  transition:background .18s,transform .16s;
}
.top-cta:not([hidden]){display:inline-flex;align-items:center;justify-content:center}
.top-cta:hover{background:#000;transform:translateY(-1px)}

/* ---------- 首屏 ---------- */
.hero{padding:76px 0 66px}
.hero-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:60px;align-items:center}
.kick{margin:0;font-size:12px;font-weight:800;letter-spacing:.16em;color:#A98A00;text-transform:uppercase}
.hero h1,.sec-h h2,.shot-l h2,.faq-l h2,.dl h2{margin-top:14px;font-weight:800;letter-spacing:-.02em}
.hero h1{font-size:clamp(38px,4.4vw,54px);line-height:1.14}
.lead{margin-top:20px;font-size:15.5px;color:var(--body);line-height:1.8}
.acts{margin-top:30px;display:flex;gap:12px;flex-wrap:wrap}
.btn{
  height:52px;padding:0 28px;border-radius:10px;
  font-size:15px;font-weight:700;text-decoration:none;
  border:1px solid transparent;
  transition:background .18s,border-color .18s,transform .16s,box-shadow .18s;
}
.btn:not([hidden]){display:inline-flex;align-items:center;justify-content:center}
.btn-p{background:var(--ink);color:var(--brand);box-shadow:0 14px 26px -18px rgba(20,17,11,.9)}
.btn-p:hover{background:#000;transform:translateY(-1px)}
.btn-s{background:#fff;color:var(--ink);border-color:#E2D9C4}
.btn-s:hover{border-color:#C9BC9C;transform:translateY(-1px)}
.meta{margin-top:26px;display:flex;flex-wrap:wrap;gap:8px 16px;font-size:13px;color:var(--dim)}
.meta li{position:relative;padding-left:14px}
.meta li::before{content:"";position:absolute;left:0;top:.66em;width:5px;height:5px;background:var(--brand);border-radius:1px}

/* ---------- 截图展示：一个框，三张滑动 ---------- */
.stage{
  background:linear-gradient(158deg,#FFF4C9 0%,#FFE894 46%,#FFD963 100%);
  border-radius:20px;padding:30px 22px 24px;
}
.viewer{width:278px;margin:0 auto;position:relative}
.frame{
  background:var(--ink);border-radius:16px;padding:6px;
  box-shadow:0 24px 46px -26px rgba(50,36,0,.6);
}
.track{
  display:flex;overflow-x:auto;overscroll-behavior-x:contain;
  scroll-snap-type:x mandatory;scrollbar-width:none;
  border-radius:11px;
}
.track::-webkit-scrollbar{display:none}
.slide{flex:0 0 100%;margin:0;scroll-snap-align:center}
.slide img{display:block;width:100%;height:auto;border-radius:11px;pointer-events:none}

.nav{
  position:absolute;top:50%;transform:translateY(-50%);z-index:2;
  width:30px;height:30px;border-radius:50%;padding:0;
  background:var(--ink);border:0;color:var(--brand);
  font-size:15px;line-height:1;cursor:pointer;
  box-shadow:0 8px 16px -8px rgba(50,36,0,.7);
}
.nav:not([hidden]){display:flex;align-items:center;justify-content:center}
.nav.prev{left:-40px}
.nav.next{right:-40px}
.nav[disabled]{opacity:.28;cursor:default}

.bar{margin-top:15px;text-align:center}
.dots{display:flex;justify-content:center;gap:7px}
.dots button{
  width:7px;height:7px;padding:0;border:0;border-radius:2px;
  background:#D8C79A;cursor:pointer;transition:background .2s,width .2s;
}
.dots button[aria-current="true"]{width:18px;background:var(--ink)}
.now{margin-top:8px;font-size:12.5px;color:#6E5E2C;letter-spacing:.01em}
.now b{color:var(--ink);font-weight:700}

/* ---------- 区块通用 ---------- */
.sec{padding:86px 0}
.sec-tint{background:var(--tint)}
.sec-h{max-width:34em;margin:0 auto 44px;text-align:center}
.sec-h h2{font-size:clamp(26px,2.7vw,36px);line-height:1.28}
.sub{margin-top:14px;font-size:15px;color:var(--body);line-height:1.8}

/* ---------- 功能六宫格 ---------- */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat li{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:30px 26px 26px;box-shadow:var(--sh);
}
.ico{
  display:flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:#FFF1BE;margin-bottom:16px;
}
.ico svg{width:20px;height:20px;fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.feat b{display:block;font-size:16px;font-weight:800}
.feat p{margin-top:8px;font-size:14px;color:var(--body);line-height:1.72}

/* ---------- 分类墙 ---------- */
.tags{
  display:grid;grid-template-columns:repeat(6,1fr);gap:10px;
  max-width:720px;margin:0 auto;
}
.tags li{
  font-size:14px;font-weight:600;color:var(--ink);text-align:center;
  background:#fff;border:1px solid #EADFBF;border-radius:999px;
  padding:10px 0;box-shadow:0 8px 20px -18px rgba(40,30,0,.8);
}
.tags li.on{background:var(--ink);color:var(--brand);border-color:var(--ink)}

.trio{
  margin-top:60px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:0 48px;
}
.trio > div{padding-top:22px;border-top:2px solid #E7D9AE}
.trio b{display:block;font-size:16px;font-weight:800}
.trio p{margin-top:9px;font-size:14px;color:var(--body);line-height:1.75}

/* ---------- 下载区 ---------- */
.dl{background:var(--brand);color:var(--ink);padding:88px 0}
.dl-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,520px);gap:56px;align-items:center}
.dl h2{font-size:clamp(26px,2.8vw,36px);line-height:1.24}
.dl-p{margin-top:14px;max-width:30em;font-size:15px;color:#3E3410}
.stores{margin-top:26px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.store{
  background:var(--ink);color:#fff;border-radius:12px;
  padding:12px 16px;text-decoration:none;
  transition:background .18s,transform .16s;
}
.store:not([hidden]){display:flex;align-items:center;gap:12px}
.store svg{width:22px;height:22px;flex:0 0 auto;fill:none;stroke:var(--brand);stroke-width:1.7;stroke-linejoin:round;stroke-linecap:round}
.store b{display:block;font-size:14.5px;font-weight:700}
.store i{display:block;margin-top:1px;font-size:11.5px;font-style:normal;color:#A79D80}
.store:hover{background:#000;transform:translateY(-1px)}
.dl-alt{margin-top:14px;font-size:13.5px;color:#3E3410;text-decoration:none}
.dl-alt:not([hidden]){display:inline-flex;align-items:center;gap:7px}
.dl-alt svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.dl-alt:hover{color:var(--ink)}
.checks{margin-top:22px}
.checks li{position:relative;padding-left:22px;margin-top:9px;font-size:13.5px;color:#3E3410}
.checks li::before{
  content:"";position:absolute;left:0;top:.5em;
  width:11px;height:11px;border-radius:3px;background:rgba(20,17,11,.2);
}
/* 三个入口全被隐藏时，整块下载区没有存在意义，一起收起 */
.dl:not(:has(.store:not([hidden]))){display:none}
/* 顶栏那个「立即下载」此时也没有落点，由 JS 打 class 一并收起 */
.no-dl .top-cta{display:none}

.dl-kick{margin:0 0 16px;font-size:12px;font-weight:800;letter-spacing:.12em;color:#6A5508}
.dl-r .checks{margin:0}
.dl-r .checks li{
  margin:0;padding:15px 0 15px 26px;font-size:14px;line-height:1.7;
  color:#3A300E;border-bottom:1px solid rgba(20,17,11,.18);
}
.dl-r .checks li:first-child{padding-top:0}
.dl-r .checks li:last-child{border-bottom:0}
.dl-r .checks li::before{top:1.35em;background:rgba(20,17,11,.28)}
.dl-r .checks li:first-child::before{top:.55em}

.steps{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0 44px;
}
.steps li{padding-top:22px;border-top:2px solid var(--brand)}
.steps span{display:block;font-size:12px;font-weight:800;color:#B49B33;letter-spacing:.1em}
.steps b{display:block;margin-top:10px;font-size:16px;font-weight:800}
.steps p{margin-top:8px;font-size:14px;color:var(--body);line-height:1.75}

/* ---------- 问答 ---------- */
.faq-in{display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:60px;align-items:start}
.faq-l h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3}
details{border-top:1px solid var(--line);padding:20px 0}
details:last-child{border-bottom:1px solid var(--line)}
summary{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-size:15.5px;font-weight:700;cursor:pointer;list-style:none;
}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--dim);font-weight:400;font-size:18px;line-height:1}
details[open] summary::after{content:"−"}
details p{margin-top:12px;font-size:14px;color:var(--body);line-height:1.8;max-width:40em}

/* ---------- 页脚 ---------- */
.foot{background:var(--ink);color:#B8B1A0;padding:62px 0 26px}
.foot-in{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px}
.foot .brand b{color:#fff}
.foot-b p{margin-top:14px;max-width:26em;font-size:13.5px;line-height:1.75}
.foot-c b{display:block;margin-bottom:12px;color:#fff;font-size:13px;letter-spacing:.05em}
.foot-c a{display:block;margin-top:9px;font-size:13.5px;color:#B8B1A0;text-decoration:none;transition:color .18s}
.foot-c a:hover{color:var(--brand)}
.foot-bt{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid #2B251A;
  font-size:12.5px;color:#7C7565;
}

/* ---------- 404 ---------- */
.nf-page .top-cta{margin-left:auto}
.nf{padding:96px 0 104px;min-height:56vh;display:flex;align-items:center}
.nf-in{width:100%;max-width:640px;margin:0 auto;text-align:center}
.nf h1{margin-top:14px;font-size:clamp(30px,3.6vw,42px);line-height:1.24;font-weight:800}
.nf .lead{margin:18px auto 0;max-width:30em}
.nf-acts{margin-top:30px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---------- 窄屏 ---------- */
@media (max-width:960px){
  .wrap{padding:0 22px}
  .top nav{display:none}
  .top-in{height:62px}
  .hero{padding:40px 0 52px}
  /* 窄屏列窄，硬换行会把词拆开，改回自然断行 */
  .lead br,.feat p br,.sub br,.trio p br{display:none}
  .hero-in{grid-template-columns:1fr;gap:38px}
  .acts .btn{flex:1 1 140px}
  .sec{padding:60px 0}
  .feat{grid-template-columns:repeat(2,1fr);gap:14px}
  .feat li{padding:20px 18px}
  .dl{padding:56px 0}
  .dl-in{grid-template-columns:1fr;gap:34px}
  .faq-in{grid-template-columns:1fr;gap:28px}
  .trio{grid-template-columns:1fr;gap:26px}
  .steps{grid-template-columns:1fr;gap:26px}
  .tags{max-width:none}
  .foot-in{grid-template-columns:1fr 1fr;gap:28px}
  .foot-b{grid-column:1 / -1}
  .viewer{width:236px}
  .nav:not([hidden]){display:none}
}

@media (max-width:560px){
  .hero h1{font-size:clamp(32px,8.4vw,40px)}
  .feat{grid-template-columns:1fr}
  .stores{grid-template-columns:1fr}
  .stage{padding:20px 16px 16px;border-radius:18px}
  .viewer{width:224px}
  .foot-in{grid-template-columns:1fr 1fr}
  .foot-bt{flex-direction:column;gap:8px}
}