@charset "utf-8";
/* ==========================================================================
   虫虫漫画 · chongchongmanga.cn
   第 4 档配色：钴蓝 #3457D5 × 琥珀橘 #FF8A2B（冷蓝主 + 暖橘辅，双色结构）
   Hero 纹理：漫画原稿纸方格 + 左下琥珀橘斜切块
   CTA：钴蓝实底 + 左上/右下双切角 + 底部琥珀橘细条
   ========================================================================== */

@font-face{
  font-family:'Nunito';
  src:url('../fonts/nunito-latin-wght-normal.woff2') format('woff2');
  font-weight:200 1000;
  font-style:normal;
  font-display:swap;
}

/* 第一条必须是 box-sizing，否则每个 .wrap 都会宽出左右内边距之和 */
*,*::before,*::after{box-sizing:border-box}

html,body,div,span,h1,h2,h3,h4,p,ul,ol,li,dl,dt,dd,figure,figcaption,blockquote,
table,thead,tbody,tr,th,td,form,fieldset,legend,header,footer,nav,section,article,aside,main{
  margin:0;padding:0
}
ul,ol{list-style:none}
table{border-collapse:collapse;border-spacing:0}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block;border:0}
b,strong{font-weight:800}
em,i{font-style:normal}

:root{
  --cobalt:#3457D5;
  --cobalt-d:#2743A8;
  --cobalt-x:#182C6E;
  --cobalt-l:#E7EDFC;
  --amber:#FF8A2B;
  --amber-d:#CF6A12;
  --amber-l:#FFF1E2;
  --gold:#FFC24B;

  --bg:#F1F5FD;
  --bg2:#F8FBFF;
  --card:#FFFFFF;
  --tx:#1B2440;
  --tx2:#4E5875;
  --tx3:#8B95AE;
  --line:#DEE5F5;

  --foot:#141C33;
  --foot-tx:#BFC9E2;

  --num:'Nunito','Segoe UI',Verdana,sans-serif;
  --r-lg:18px;
  --r-md:12px;
  --r-sm:8px;
  --sh:0 8px 24px rgba(27,36,64,.08);
}

body{
  background:var(--bg);
  color:var(--tx);
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}

.wrap{width:100%;max-width:1180px;margin:0 auto;padding-left:20px;padding-right:20px}

/* ── 头部 ───────────────────────────────────────────────── */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.95);
  border-bottom:1px solid var(--line);
}
.hdr{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-top:11px;padding-bottom:11px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand .logo-img{width:44px;height:44px;border-radius:12px;flex:none;box-shadow:0 3px 10px rgba(52,87,213,.22)}
.brand-name{display:flex;flex-direction:column;line-height:1.2}
.brand-name b{font-size:19px;letter-spacing:.6px}
.brand-name i{font-size:11.5px;color:var(--tx3);letter-spacing:.4px}

.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap;margin-left:auto}
.nav a{
  padding:7px 13px;border-radius:20px;font-size:14px;color:var(--tx2);
  white-space:nowrap;transition:background .18s,color .18s
}
.nav a:hover{background:var(--cobalt-l);color:var(--cobalt-d)}
.nav a.on{background:var(--cobalt);color:#fff}
.nav .ns{display:none}

.hdr-cta{
  flex:none;display:inline-flex;align-items:center;gap:7px;
  background:var(--cobalt);color:#fff;font-weight:800;font-size:14.5px;
  padding:10px 22px 10px 24px;
  clip-path:polygon(13px 0,100% 0,100% calc(100% - 13px),calc(100% - 13px) 100%,0 100%,0 13px);
  position:relative;transition:background .18s,transform .18s
}
.hdr-cta::after{
  content:"";position:absolute;left:0;right:13px;bottom:0;height:3px;background:var(--amber)
}
.hdr-cta:hover{background:var(--cobalt-d);transform:translateY(-2px)}

/* ── 通用按钮 ───────────────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--cobalt);color:#fff;font-weight:800;font-size:16px;
  padding:15px 34px 15px 36px;position:relative;
  clip-path:polygon(15px 0,100% 0,100% calc(100% - 15px),calc(100% - 15px) 100%,0 100%,0 15px);
  transition:background .18s,transform .18s
}
.btn::after{content:"";position:absolute;left:0;right:15px;bottom:0;height:3px;background:var(--amber)}
.btn:hover{background:var(--cobalt-d);transform:translateY(-2px)}
.btn.ghost{
  background:transparent;color:var(--cobalt-d);border:2px solid var(--cobalt);
  clip-path:none;padding:13px 28px
}
.btn.ghost::after{display:none}
.btn.ghost:hover{background:var(--cobalt-l)}

/* ── Hero ───────────────────────────────────────────────── */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(158deg,#FFFFFF 0%,#F3F7FE 46%,#FDF2E7 100%);
  border-bottom:1px solid var(--line)
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(52,87,213,.075) 1px,transparent 1px),
    linear-gradient(90deg,rgba(52,87,213,.075) 1px,transparent 1px);
  background-size:26px 26px
}
.hero::after{
  content:"";position:absolute;left:-60px;bottom:-90px;width:340px;height:230px;
  background:linear-gradient(120deg,rgba(255,138,43,.30),rgba(255,194,75,.12));
  clip-path:polygon(0 34%,100% 0,100% 100%,0 100%);
  pointer-events:none
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.08fr .92fr;gap:38px;align-items:center;
  padding-top:56px;padding-bottom:62px
}
.hero-grid>*{min-width:0}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--cobalt-d);
  border:1px solid var(--line);border-radius:20px;padding:6px 15px;font-size:13px;
  margin-bottom:18px;box-shadow:0 2px 8px rgba(27,36,64,.05)
}
.hero-tag s{text-decoration:none;width:8px;height:8px;border-radius:50%;background:var(--amber)}
.hero h1{font-size:38px;line-height:1.32;letter-spacing:.5px;margin-bottom:16px}
.hero h1 em{color:var(--cobalt)}
.lead-p{font-size:16px;color:var(--tx2);max-width:600px;margin-bottom:26px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-note{font-size:13px;color:var(--tx3);margin-top:16px;display:flex;flex-wrap:wrap;gap:8px 20px}
.hero-note span{display:inline-flex;align-items:center;gap:6px}
.hero-note span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cobalt);opacity:.7}

.hero-visual{display:flex;align-items:flex-end;justify-content:center;gap:18px}
.phone{
  width:206px;flex:none;background:#fff;border-radius:26px;padding:9px;
  box-shadow:0 18px 42px rgba(24,44,110,.18),0 0 0 1px var(--line)
}
.phone .screen{border-radius:19px;overflow:hidden;background:#fff}
.phone img{width:100%;height:auto;border-radius:19px}
.phone.small{width:142px;border-radius:20px;padding:7px}
.phone.small .screen{border-radius:14px}
.phone.small img{border-radius:14px}

/* ── 数据条 ─────────────────────────────────────────────── */
.stats{background:var(--cobalt-x);color:#fff}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding-top:26px;padding-bottom:26px}
.stats .it{text-align:center;min-width:0}
.stats .it .num{
  font-family:var(--num);font-size:30px;font-weight:800;line-height:1.2;
  color:var(--gold);letter-spacing:.5px
}
.stats .it .num i{font-size:15px;margin-left:2px;color:#fff}
.stats .it .lbl{font-size:13px;color:var(--foot-tx);margin-top:4px}

/* ── 区块通用 ───────────────────────────────────────────── */
.sec{padding-top:62px;padding-bottom:62px}
.sec.alt{background:var(--bg2)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 34px}
.sec-head h2{font-size:27px;letter-spacing:.5px}
.sec-head h2 em{color:var(--cobalt)}
.sec-head-p{font-size:15px;color:var(--tx2);margin-top:10px}
.sec-rule{width:64px;height:4px;background:var(--amber);border-radius:2px;margin:16px auto 0}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cards>*{min-width:0}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 22px;transition:transform .2s,box-shadow .2s
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.card .ic{
  width:44px;height:44px;border-radius:13px;background:var(--cobalt-l);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px
}
.card .ic svg{width:22px;height:22px;fill:none;stroke:var(--cobalt-d);stroke-width:1.9;
  stroke-linecap:round;stroke-linejoin:round}
.card:nth-child(3n+2) .ic{background:var(--amber-l)}
.card:nth-child(3n+2) .ic svg{stroke:var(--amber-d)}
.card:nth-child(3n) .ic{background:#FFF7DE}
.card:nth-child(3n) .ic svg{stroke:#B98200}
.card h3{font-size:17.5px;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--tx2)}

/* ── 截图墙 ─────────────────────────────────────────────── */
.shots{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.shots>*{min-width:0}
.shot{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:9px 9px 12px;transition:transform .2s,box-shadow .2s
}
.shot:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.shot img{width:100%;height:auto;border-radius:12px;background:#fff}
.shot figcaption{font-size:13px;color:var(--tx2);text-align:center;margin-top:10px}
.shot figcaption b{display:block;color:var(--tx);font-size:14px;margin-bottom:2px}

/* ── 深度内容入口 ───────────────────────────────────────── */
.entries{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.entries>*{min-width:0}
.entry{
  display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-left:5px solid var(--cobalt);border-radius:var(--r-lg);padding:22px;
  transition:transform .2s,box-shadow .2s
}
.entry:nth-child(2){border-left-color:var(--amber)}
.entry:nth-child(3){border-left-color:var(--gold)}
.entry:nth-child(4){border-left-color:#6C7BE0}
.entry:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.entry .txt{display:block;flex:1 1 auto;min-width:0}
.entry .no{
  font-family:var(--num);font-size:26px;font-weight:800;color:var(--cobalt-l);
  line-height:1;flex:none;width:46px
}
.entry:nth-child(2) .no{color:#FFE3C9}
.entry:nth-child(3) .no{color:#FFF0C8}
.entry:nth-child(4) .no{color:#E2E6FA}
.entry h3{font-size:17px;margin-bottom:7px}
.entry p{font-size:14px;color:var(--tx2);margin-bottom:9px}
.entry .more{display:block;font-size:13.5px;color:var(--cobalt);font-weight:700;margin-top:2px}

/* ── 评价 ───────────────────────────────────────────────── */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.reviews>*{min-width:0}
.review{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;
  display:flex;flex-direction:column
}
.review .stars{color:var(--gold);font-size:15px;letter-spacing:2px;margin-bottom:10px}
.review p{font-size:14.5px;color:var(--tx2);flex:1}
.review .who{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;
  border-top:1px solid var(--line)}
.review .av{width:34px;height:34px;border-radius:50%;background:var(--cobalt-l);color:var(--cobalt-d);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex:none}
.review .who b{font-size:14px;display:block}
.review .who i{font-size:12px;color:var(--tx3)}

/* ── FAQ ────────────────────────────────────────────────── */
.faq details,.faq-list details,.prose details{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:10px;overflow:hidden
}
.faq details summary,.faq-list details summary,.prose details summary{
  cursor:pointer;padding:15px 46px 15px 18px;font-size:15.5px;font-weight:700;
  position:relative;list-style:none
}
.faq details summary::-webkit-details-marker,.faq-list details summary::-webkit-details-marker,
.prose details summary::-webkit-details-marker{display:none}
.faq details summary::after,.faq-list details summary::after,.prose details summary::after{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  color:var(--cobalt);font-size:20px;font-weight:400;line-height:1
}
.faq details[open] summary::after,.faq-list details[open] summary::after,
.prose details[open] summary::after{content:"–"}
.faq details[open] summary,.faq-list details[open] summary,.prose details[open] summary{
  color:var(--cobalt-d)
}
.faq details .ans,.faq-list details .ans,.prose details .ans{
  padding:0 18px 16px;font-size:14.5px;color:var(--tx2)
}
.faq details .ans p+p,.prose details .ans p+p{margin-top:9px}

.faq-cols{display:grid;grid-template-columns:repeat(2,1fr);gap:0 18px}
.faq-cols>*{min-width:0}

/* ── 底部下载条 ─────────────────────────────────────────── */
.band{background:linear-gradient(120deg,var(--cobalt-x),var(--cobalt-d) 58%,var(--cobalt))}
.band .wrap{
  display:grid;grid-template-columns:1fr auto;gap:8px 24px;align-items:center;
  padding-top:38px;padding-bottom:38px
}
.band h2{font-size:24px;color:#fff;grid-column:1;grid-row:1}
.band .btn{grid-column:2;grid-row:1;justify-self:end;background:var(--amber)}
.band .btn:hover{background:var(--amber-d)}
.band .btn::after{background:#fff;opacity:.55}
.band-txt{grid-column:1/-1;grid-row:2;color:#C9D3EF;font-size:14.5px}

/* ── 页脚 ───────────────────────────────────────────────── */
.site-foot{background:var(--foot);color:var(--foot-tx);font-size:14px}
.site-foot .wrap{padding-top:44px;padding-bottom:26px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:30px}
.foot-grid>*{min-width:0}
.site-foot h3{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.5px}
.site-foot p{color:var(--foot-tx);line-height:1.85}
.site-foot .foot-links li{margin-bottom:8px}
.site-foot .foot-links a{color:var(--foot-tx);transition:color .18s}
.site-foot .foot-links a:hover{color:var(--gold)}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand img{width:36px;height:36px;border-radius:10px;flex:none}
.foot-brand b{color:#fff;font-size:17px;letter-spacing:.5px}
.foot-dl{display:inline-block;margin-top:14px;background:var(--amber);color:#3A1B00;
  font-weight:800;padding:11px 24px;font-size:14.5px;border-radius:6px}
.foot-bottom{
  border-top:1px solid rgba(191,201,226,.22);margin-top:30px;padding-top:18px;
  font-size:13px;color:#8B96B4;line-height:1.85
}

/* ── 内页 ───────────────────────────────────────────────── */
.page-hero{background:linear-gradient(158deg,#FFFFFF,#F2F6FE 60%,#FDF3E9);
  border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(52,87,213,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(52,87,213,.06) 1px,transparent 1px);
  background-size:26px 26px
}
.page-hero .wrap{position:relative;z-index:1;padding-top:44px;padding-bottom:44px}
.crumb{font-size:13px;color:var(--tx3);margin-bottom:12px}
.crumb a{color:var(--cobalt)}
.page-hero h1{font-size:30px;line-height:1.38;letter-spacing:.4px}

.prose{
  width:100%;max-width:900px;min-width:0;margin:0 auto;
  padding:54px 22px 64px
}
.prose>*{min-width:0}
.prose h2{font-size:23px;margin:42px 0 14px;padding-left:14px;border-left:5px solid var(--cobalt);
  line-height:1.42}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:17.5px;margin:24px 0 8px;color:var(--cobalt-d)}
.prose p{font-size:15.5px;color:var(--tx2);margin-bottom:14px}
.prose p strong{color:var(--tx)}
.prose a{color:var(--cobalt);border-bottom:1px solid rgba(52,87,213,.35)}
.prose a:hover{color:var(--cobalt-d);border-bottom-color:var(--cobalt-d)}
.prose ul,.prose ol{margin:0 0 16px}
.prose ul>li{position:relative;padding-left:20px;font-size:15.5px;color:var(--tx2);margin-bottom:9px}
.prose ul>li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--amber)
}
.prose ol{counter-reset:st;padding-left:0}
.prose .steps{margin:0 0 20px}
.prose .steps>li{
  counter-increment:st;position:relative;padding:0 0 0 52px;margin-bottom:16px;
  font-size:15.5px;color:var(--tx2)
}
.prose .steps>li::before{
  content:counter(st);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:11px;
  background:var(--cobalt-l);color:var(--cobalt-d);font-family:var(--num);font-weight:800;
  font-size:16px;display:flex;align-items:center;justify-content:center
}
.prose .steps>li b{display:block;color:var(--tx);font-size:16px;margin-bottom:4px}
.prose .steps>li ul{margin-top:8px;padding-left:0}
.prose .steps>li ul>li{padding-left:16px;font-size:14.5px}
.prose .steps>li ul>li::before{width:5px;height:5px;top:.75em;left:2px}

.tbl-scroll{overflow-x:auto;margin:0 0 20px;border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff}
.tbl{width:100%;min-width:540px;font-size:14.5px}
.tbl th,.tbl td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);
  vertical-align:top;color:var(--tx2)}
.tbl th{background:var(--cobalt-l);color:var(--cobalt-d);font-weight:800;white-space:nowrap}
.tbl tr:last-child td{border-bottom:0}
.tbl td strong{color:var(--tx)}
.prose .tbl-cap,.prose .tbl-note{
  font-size:13.5px;color:var(--tx3);margin:0 0 9px;padding-left:0;border-left:0
}
.prose .tbl-note{margin:9px 0 20px}

.note-box{
  background:var(--amber-l);border-left:5px solid var(--amber);border-radius:0 var(--r-md) var(--r-md) 0;
  padding:16px 20px;margin:0 0 20px;font-size:14.5px;color:#7A3F05
}
.note-box strong{color:#5E2F02}

.cols{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-bottom:20px}
.cols>*{min-width:0}
.cols h3{margin-top:0}

.prose .shot{max-width:368px;margin:0 auto 22px}

.rel-links{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;
  margin-top:40px}
.rel-links h2{margin-top:0;border-left:0;padding-left:0;font-size:19px}
.rel-links ul{margin:0}
.rel-links ul>li{padding-left:18px}
.rel-links ul>li::before{background:var(--cobalt)}

/* ── 渐显（只用于首页） ─────────────────────────────────── */
.reveal{transition:opacity .6s ease,transform .6s ease}
.js .reveal{opacity:0;transform:translateY(18px)}
.js .reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  .js .reveal,.reveal{opacity:1;transform:none}
  *{transition:none !important}
}

/* ── ≤980px ─────────────────────────────────────────────── */
@media (max-width:980px){
  body{font-size:15.5px}
  .hero-grid{grid-template-columns:1fr;gap:30px;padding-top:44px;padding-bottom:48px}
  .hero h1{font-size:32px}
  .hero-visual{order:2}
  .cards,.reviews{grid-template-columns:repeat(2,1fr)}
  .shots{grid-template-columns:repeat(3,1fr)}
  .entries{grid-template-columns:1fr}
  .stats .wrap{grid-template-columns:repeat(2,1fr);gap:22px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .faq-cols{grid-template-columns:1fr}
  .brand-name i{display:none}
}

/* ── ≤620px ─────────────────────────────────────────────── */
@media (max-width:620px){
  .wrap{padding-left:14px;padding-right:14px}
  .site-header{position:static}
  .hdr{gap:8px;padding-top:10px;padding-bottom:8px}
  .hdr-cta{display:none}
  .brand .logo-img{width:38px;height:38px}
  .brand-name b{font-size:17px}
  .nav{width:100%;margin-left:0;justify-content:space-between;gap:0}
  .nav a{flex:1 1 auto;text-align:center;padding:6px 4px;font-size:13px;letter-spacing:-.2px}
  .nav .nl{display:none}
  .nav .ns{display:inline}

  .hero-grid{padding-top:32px;padding-bottom:38px}
  .hero h1{font-size:26px}
  .lead-p{font-size:15px}
  .hero-visual{gap:12px}
  .phone{width:44vw;max-width:196px;padding:7px;border-radius:20px}
  .phone .screen{border-radius:14px}
  .phone img{border-radius:14px}
  .phone.small{width:30vw;max-width:132px;padding:5px;border-radius:16px}
  .phone.small .screen{border-radius:11px}
  .phone.small img{border-radius:11px}
  .btn{font-size:15px;padding:13px 26px 13px 28px}

  .sec{padding-top:44px;padding-bottom:44px}
  .sec-head h2{font-size:22px}
  .cards,.reviews,.shots{grid-template-columns:1fr}
  .shots{grid-template-columns:repeat(2,1fr)}
  .stats .it .num{font-size:24px}
  .band .wrap{grid-template-columns:1fr;padding-top:30px;padding-bottom:30px}
  .band h2{font-size:20px;grid-column:1;grid-row:1}
  .band .btn{grid-column:1;grid-row:2;justify-self:start;margin-top:12px}
  .band-txt{grid-row:3}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .page-hero h1{font-size:23px}
  .page-hero .wrap{padding-top:32px;padding-bottom:32px}
  .prose{padding:34px 14px 44px}
  .prose h2{font-size:19.5px}
  .prose p,.prose ul>li,.prose .steps>li{font-size:15px}
  .prose .steps>li{padding-left:46px}
  .prose .steps>li::before{width:32px;height:32px;font-size:15px;border-radius:10px}
  .cols{grid-template-columns:1fr}
  .prose .shot{max-width:100%}
}