/* 繁花漫画 - ethjghq.cn - 分镜画廊骨架，直角硬阴影，四色 #181818/#FFF/#E8456C/#F5B838 */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#181818;--paper:#FFFFFF;--brand:#E8456C;--contra:#F5B838;
  --mist-r:#FFF5F8;--mist-y:#FFF9EC;--dark:#1A1A1A;--darker:#0E0E0E;
  --line:#181818;
}
html{scroll-behavior:smooth;overflow-x:hidden;width:100%}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;width:100%;max-width:100vw}
img{display:block;max-width:100%;height:auto;margin:0 auto}
a{color:inherit;text-decoration:none}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.fade{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.fade{opacity:1;transform:none;transition:none}}

/* ===== 顶栏 ===== */
.mast{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:2px solid var(--ink)}
.mast-bar{display:flex;align-items:center;gap:18px;height:64px}
.mast-brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:20px}
.mast-brand img{width:36px;height:36px;object-fit:cover;border:2px solid var(--ink)}
.mast-links{display:flex;gap:20px;margin-left:auto;font-size:14px;font-weight:600}
.mast-links a{padding:6px 2px;border-bottom:2px solid transparent;transition:border-color .2s}
.mast-links a:hover{border-bottom-color:var(--brand)}
.mast-tap{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;background:var(--brand);color:#fff;font-weight:700;font-size:14px;border:2px solid var(--ink);box-shadow:2px 2px 0 var(--ink)}
.mast-tap:hover{background:var(--ink)}
.mast-burger{display:none;width:42px;height:42px;background:none;border:2px solid var(--ink);flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer}
.mast-burger span{display:block;width:20px;height:2px;background:var(--ink)}
.mast-strip{display:flex;height:6px}
.mast-strip i{flex:1}
.mast-strip .g{background:var(--brand)}
.mast-strip .p{background:var(--contra)}
.mast-strip .k{background:var(--ink)}

/* ===== 英雄区 漫画分镜画廊 ===== */
.hero{background:var(--mist-r);padding:56px 0 64px;border-bottom:1px solid var(--ink)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.04em}
.eyebrow i{display:inline-block;width:10px;height:10px;background:var(--contra)}
.hero-text h1{font-size:54px;line-height:1.05;font-weight:900;margin:14px 0 16px;letter-spacing:-.01em}
.lead{font-size:16px;color:#3a3a3a;max-width:520px;margin-bottom:20px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.tags span{padding:5px 11px;font-size:12.5px;font-weight:600;border:1.5px solid var(--ink)}
.tag-a{background:var(--brand);color:#fff}
.tag-b{background:var(--contra);color:#181818}
.tag-c{background:var(--ink);color:#fff}
.action{display:flex;gap:14px;margin-bottom:26px}
.btn-primary{display:inline-flex;align-items:center;gap:6px;padding:14px 30px;background:var(--brand);color:#fff;font-weight:800;font-size:16px;border:2px solid var(--ink);box-shadow:4px 4px 0 var(--ink)}
.btn-primary:hover{background:var(--ink)}
.btn-ghost{display:inline-flex;align-items:center;padding:14px 22px;background:transparent;color:var(--ink);font-weight:700;font-size:15px;border:2px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.metrics{display:flex;gap:28px;border-top:2px solid var(--ink);padding-top:18px}
.metrics div{display:flex;flex-direction:column}
.metrics b{font-size:26px;font-weight:900;color:var(--ink)}
.metrics span{font-size:12px;color:#666}

/* 分镜画廊 */
.hero-visual{display:flex;justify-content:center}
.panel-wall{width:100%;max-width:420px;background:#fff;border:3px solid var(--ink);box-shadow:12px 10px 0 var(--ink);padding:14px;display:grid;grid-template-columns:1fr;gap:12px}
.panel-main{position:relative;border:2px solid var(--ink);overflow:hidden}
.panel-main img{width:100%;height:360px;object-fit:cover;object-position:top}
.panel-cap{position:absolute;left:0;bottom:0;right:0;background:var(--ink);color:#fff;font-size:12.5px;font-weight:700;padding:8px 12px;border-top:2px solid var(--brand)}
.panel-side{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.panel-sub{position:relative;border:2px solid var(--ink);background:var(--mist-y);padding:16px 12px;display:flex;flex-direction:column;justify-content:space-between;min-height:96px}
.panel-s1{background:var(--mist-r)}
.panel-s2{background:var(--mist-y)}
.panel-speech{font-size:13px;font-weight:700;color:var(--ink);border:1.5px solid var(--ink);background:#fff;padding:6px 8px;display:inline-block;align-self:flex-start}
.panel-num{font-size:34px;font-weight:900;color:var(--brand);align-self:flex-end;line-height:1}
.panel-s2 .panel-num{color:var(--contra)}
.panel-bar{display:flex;align-items:center;justify-content:space-between;background:var(--ink);color:#fff;font-size:12.5px;font-weight:600;padding:8px 12px;border:2px solid var(--ink)}
.panel-dot{width:10px;height:10px;background:var(--brand);display:inline-block}

/* ===== 界面展示 画框陈列 ===== */
.shot{background:var(--paper);padding:60px 0 64px;border-bottom:1px solid var(--ink);overflow:hidden}
.shot-head{text-align:center;margin-bottom:32px}
.shot-eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--brand);border:1.5px solid var(--brand);padding:4px 12px;background:var(--mist-r)}
.shot-head h2{font-size:30px;font-weight:900;margin:14px 0 8px}
.shot-head p{font-size:14px;color:#666}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:auto auto;gap:18px}
.frame{position:relative;background:#fff;overflow:hidden}
.frame img{width:100%;height:380px;object-fit:cover;object-position:top}
.frame figcaption{padding:10px 12px;font-size:13.5px;font-weight:700;border-top:2px solid var(--ink);background:#fff;text-align:center}
.frame-a{grid-column:1;grid-row:1/span 2;border:3px solid var(--ink)}
.frame-b{grid-column:2;grid-row:1;border:5px double var(--ink)}
.frame-c{grid-column:3;grid-row:1;border-left:6px solid var(--brand);border-top:2px solid var(--ink);border-right:2px solid var(--ink);border-bottom:2px solid var(--ink)}
.frame-d{grid-column:2;grid-row:2;background:var(--mist-y);border:2px solid var(--ink)}
.frame-d figcaption{background:var(--mist-y)}
.frame-e{grid-column:3;grid-row:2;border-top:6px solid var(--contra);border-bottom:2px solid var(--ink);border-left:2px solid var(--ink);border-right:2px solid var(--ink)}

/* ===== 核心特色 3列竖卡带编号 ===== */
.feat{background:var(--mist-y);padding:60px 0 64px;border-bottom:1px solid var(--ink)}
.feat-head{text-align:center;margin-bottom:32px}
.feat-eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--ink);border:1.5px solid var(--ink);padding:4px 12px;background:#fff}
.feat-head h2{font-size:30px;font-weight:900;margin:14px 0 8px}
.feat-head p{font-size:14px;color:#5a5a5a}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat-cell{background:#fff;border:2px solid var(--ink);padding:24px 22px 22px;position:relative}
.feat-cell::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:var(--brand)}
.feat-cell:nth-child(n+4)::before{background:var(--contra)}
.feat-cell .num{font-size:30px;font-weight:900;color:var(--brand);display:block;margin-bottom:10px;line-height:1}
.feat-cell:nth-child(n+4) .num{color:var(--contra)}
.feat-cell b{display:block;font-size:17px;font-weight:800;margin-bottom:8px}
.feat-cell p{font-size:14px;color:#3a3a3a}

/* ===== 使用指南 竖向步骤卡 ===== */
.guide{background:var(--paper);padding:60px 0 64px;border-bottom:1px solid var(--ink)}
.guide-head{text-align:center;margin-bottom:32px}
.guide-eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--contra);border:1.5px solid var(--contra);padding:4px 12px;background:var(--mist-y)}
.guide-head h2{font-size:30px;font-weight:900;margin:14px 0 8px}
.guide-head p{font-size:14px;color:#5a5a5a}
.steps{list-style:none;display:grid;grid-template-columns:1fr;gap:14px;max-width:760px;margin:0 auto}
.step{display:flex;gap:18px;align-items:stretch;background:#fff;border:2px solid var(--ink)}
.step-no{flex:0 0 64px;background:var(--ink);color:#fff;font-size:32px;font-weight:900;display:flex;align-items:center;justify-content:center}
.step:nth-child(even) .step-no{background:var(--brand)}
.step:nth-child(odd) .step-no{background:var(--ink)}
.step-body{padding:18px 22px}
.step-body b{font-size:16px;font-weight:800;display:block;margin-bottom:6px}
.step-body p{font-size:14px;color:#3a3a3a}

/* ===== FAQ 左列表+右面板 ===== */
.faq{background:var(--mist-r);padding:60px 0 64px;border-bottom:1px solid var(--ink)}
.faq-head{text-align:center;margin-bottom:32px}
.faq-eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--brand);border:1.5px solid var(--brand);padding:4px 12px;background:#fff}
.faq-head h2{font-size:30px;font-weight:900;margin:14px 0 8px}
.faq-head p{font-size:14px;color:#5a5a5a}
.faq-pair{display:grid;grid-template-columns:1fr 1.4fr;gap:24px;background:#fff;border:2px solid var(--ink);box-shadow:-10px 8px 0 var(--ink)}
.faq-q{list-style:none;border-right:2px solid var(--ink)}
.faq-q li{border-bottom:1px solid #eee}
.faq-q li:last-child{border-bottom:none}
.faq-q button{display:block;width:100%;text-align:left;padding:14px 18px;background:none;border:none;font-size:14px;font-weight:600;color:#444;cursor:pointer;font-family:inherit;border-left:4px solid transparent;transition:background .15s,color .15s,border-color .15s}
.faq-q button:hover{background:var(--mist-r)}
.faq-q button.active{background:var(--mist-r);color:var(--ink);border-left-color:var(--brand);font-weight:800}
.faq-a{padding:24px 26px}
.faq-a p{font-size:14.5px;color:#2a2a2a;line-height:1.85}

/* ===== 用户评价 竖向单列长条 ===== */
.rv{background:var(--paper);padding:60px 0 64px;border-bottom:1px solid var(--ink)}
.rv-head{text-align:center;margin-bottom:32px}
.rv-eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--contra);border:1.5px solid var(--contra);padding:4px 12px;background:var(--mist-y)}
.rv-head h2{font-size:30px;font-weight:900;margin:14px 0 8px}
.rv-head p{font-size:14px;color:#5a5a5a}
.rv-list{display:grid;grid-template-columns:1fr;gap:14px;max-width:820px;margin:0 auto}
.rv-row{display:grid;grid-template-columns:60px 1fr;gap:16px;background:var(--mist-r);border:2px solid var(--ink)}
.rv-mark{font-size:64px;font-weight:900;color:var(--brand);line-height:1;text-align:center;padding-top:8px;font-family:Georgia,serif}
.rv-main{padding:16px 18px 16px 0}
.rv-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.rv-head b{font-size:15px;font-weight:800}
.rv-stars{color:var(--contra);font-size:14px;letter-spacing:1px}
.rv-head time{margin-left:auto;font-size:12px;color:#888;font-weight:600}
.rv-body{font-size:14px;color:#2a2a2a;line-height:1.8}

/* ===== 下载条 左文右按钮+印章 ===== */
.dl{background:var(--dark);padding:48px 0 52px;border-top:2px solid var(--ink)}
.dl-bar{display:grid;grid-template-columns:1fr auto auto;gap:24px;align-items:center;background:#fff;border:2px solid var(--ink);box-shadow:8px -8px 0 var(--brand);padding:22px 26px}
.dl-text b{display:block;font-size:20px;font-weight:900;color:var(--ink)}
.dl-text p{font-size:14px;color:#5a5a5a;margin-top:4px}
.dl-btn{display:inline-flex;align-items:center;padding:14px 30px;background:var(--brand);color:#fff;font-weight:800;font-size:16px;border:2px solid var(--ink);box-shadow:4px 4px 0 var(--ink)}
.dl-btn:hover{background:var(--ink)}
.dl-seal{width:64px;height:64px;border:2px solid var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--contra);color:var(--ink);font-weight:900;font-size:13px;line-height:1.1}
.dl-seal span{display:block}

/* ===== 页脚 ===== */
.foot{background:var(--ink);color:#bbb;padding:40px 0 28px;border-top:6px solid var(--brand)}
.foot-inner{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.foot-brand{display:flex;align-items:center;gap:12px}
.foot-brand img{width:40px;height:40px;border:2px solid #fff}
.foot-brand b{display:block;color:#fff;font-size:18px;font-weight:900}
.foot-brand span{font-size:12px;color:#888}
.foot-nav{display:flex;flex-wrap:wrap;gap:14px;justify-self:end;align-self:start;font-size:13px;font-weight:600}
.foot-nav a{color:#ccc;border-bottom:1px solid transparent;padding-bottom:2px}
.foot-nav a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.foot-legal{grid-column:1/-1;border-top:1px solid #333;padding-top:18px;font-size:12px;color:#888;line-height:1.9}
.foot-legal p{margin-bottom:4px}

/* ===== 返回顶部 ===== */
.back-top{position:fixed;right:20px;bottom:20px;width:44px;height:44px;background:var(--ink);color:#fff;border:2px solid var(--brand);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .25s;z-index:60;box-shadow:2px 2px 0 var(--brand)}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{background:var(--brand)}
.back-top svg{width:22px;height:22px}

/* ===== 响应式 ===== */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-text{order:1}
  .hero-visual{order:2}
  .hero-text h1{font-size:42px}
  .gallery{grid-template-columns:1fr 1fr}
  .frame-a{grid-column:1;grid-row:auto}
  .frame-b{grid-column:2;grid-row:auto}
  .frame-c{grid-column:1;grid-row:auto}
  .frame-d{grid-column:2;grid-row:auto}
  .frame-e{grid-column:1/span 2;grid-row:auto}
  .feat-grid{grid-template-columns:1fr 1fr}
  .faq-pair{grid-template-columns:1fr;gap:0}
  .faq-q{border-right:none;border-bottom:2px solid var(--ink);display:flex;flex-wrap:wrap}
  .faq-q li{flex:1 1 50%;border-bottom:1px solid #eee}
  .dl-bar{grid-template-columns:1fr;gap:16px;text-align:center;justify-items:center}
}
@media (max-width:768px){
  .mast-links{display:none}
  .mast-burger{display:flex}
  .mast-links.open{display:flex;flex-direction:column;position:absolute;top:70px;left:0;right:0;background:#fff;border:2px solid var(--ink);padding:14px 18px;gap:12px;box-shadow:4px 4px 0 var(--ink)}
}
@media (max-width:600px){
  .wrap{padding:0 16px}
  .hero{padding:40px 0 44px}
  .hero-text h1{font-size:34px}
  .lead{font-size:14.5px}
  .metrics{gap:18px;flex-wrap:wrap}
  .metrics b{font-size:22px}
  .panel-wall{padding:10px;max-width:300px;box-shadow:8px 6px 0 var(--ink)}
  .panel-main img{height:300px}
  .panel-sub{min-height:80px}
  .shot,.feat,.guide,.faq,.rv{padding:44px 0 48px}
  .shot-head h2,.feat-head h2,.guide-head h2,.faq-head h2,.rv-head h2{font-size:23px}
  /* 界面展示移动端横滑 */
  .gallery{display:flex;overflow-x:auto;width:100%;max-width:100%;min-width:0;gap:14px;scroll-snap-type:x mandatory;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .frame{flex:0 0 260px;scroll-snap-align:start}
  .frame img{max-width:280px;aspect-ratio:9/16;height:auto;width:100%}
  .frame-a,.frame-b,.frame-c,.frame-d,.frame-e{grid-column:auto;grid-row:auto}
  .feat-grid{grid-template-columns:1fr}
  .step{flex-direction:column}
  .step-no{flex:none;padding:10px;font-size:24px}
  .faq-q{flex-direction:column}
  .faq-q li{flex:none}
  .rv-row{grid-template-columns:48px 1fr;gap:10px}
  .rv-mark{font-size:48px}
  .rv-main{padding:12px 14px 12px 0}
  .rv-head time{margin-left:0;font-size:11px}
  .dl-text b{font-size:17px}
}