/* nimoo nimooa.cn —— 黑/白/nimoo紫/靛紫 四色 · 错落阴影 · 角色墙骨架 */
:root{
  --ink:#131417; --red:#7c5cff; --red-d:#5a3fd4; --green:#4a3aa8; --green-d:#372b80;
  --line:#e2e4e8; --muted:#5b616b; --alt:#f4f5f7;
  --num:Georgia,"Times New Roman",serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:#fff;line-height:1.7;font-size:16px;overflow-x:hidden}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* 顶栏 */
.hd{position:sticky;top:0;z-index:50;background:#fff;border-bottom:2px solid var(--ink)}
.hd-in{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand img{border:2px solid var(--ink);box-shadow:2px 2px 0 var(--ink)}
.brand-t{display:flex;flex-direction:column;line-height:1.25}
.brand-t strong{font-size:18px;font-weight:900;letter-spacing:1px}
.brand-t small{font-size:11px;color:var(--muted);letter-spacing:.5px}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{font-size:14.5px;font-weight:600;color:#3c414a;padding:4px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a.on{color:var(--red);border-color:var(--red)}
.hd-r{display:flex;align-items:center;gap:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;font-weight:800;letter-spacing:1px;border:2px solid var(--ink);transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease}
.btn-pri{background:var(--red);color:#fff;padding:10px 22px;font-size:14px}
.btn-pri:hover{background:var(--red-d)}
.btn-line{background:#fff;color:var(--ink);padding:10px 22px;font-size:14px}
.btn-line:hover{border-color:var(--green);color:var(--green)}
.btn-lg{padding:15px 34px;font-size:16px}
.burger{display:none;width:42px;height:38px;border:2px solid var(--ink);background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--ink)}

/* 区块通用 */
.sec{padding:96px 0}
.sec-alt{background:var(--alt)}
.sec-h{max-width:660px;margin-bottom:48px}
.kick{display:flex;align-items:center;gap:12px;font-size:11px;font-weight:800;letter-spacing:2px;color:var(--muted);margin-bottom:16px}
.kick i{display:grid;place-items:center;width:34px;height:24px;background:var(--red);color:#fff;font-style:normal;font-family:var(--num);font-size:12px;letter-spacing:1px}
.kick-g i{background:var(--green)}
.kick-w{color:rgba(255,255,255,.75)}
.kick-w i{background:#fff;color:var(--red)}
.sec-h h2,.shelf-l h2{font-size:38px;font-weight:900;line-height:1.3;letter-spacing:1px}
.sec-sub{margin-top:14px;font-size:15.5px;color:var(--muted)}

/* 英雄区：左文 + 右虚拟界面面板 */
.hero{position:relative;background:#fff;padding:88px 0 100px;overflow:hidden}
.hero-in{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero-l h1{font-size:64px;font-weight:900;letter-spacing:2px;line-height:1.15;margin:6px 0 20px}
.lead{font-size:15.5px;color:#40454f;max-width:520px}
.hero-acts{display:flex;gap:14px;margin:30px 0 22px;flex-wrap:wrap}
.hero-points{display:flex;gap:22px;flex-wrap:wrap}
.hero-points li{position:relative;padding-left:16px;font-size:13.5px;font-weight:700;color:#33383f}
.hero-points li::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;background:var(--green)}
.hero-points li:nth-child(2)::before{background:var(--red)}
.hero-stats{display:flex;gap:36px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.hero-stats b{display:block;font-family:var(--num);font-size:26px;font-weight:700;line-height:1.2}
.hero-stats span{font-size:12.5px;color:var(--muted)}

/* 英雄区右：虚拟界面面板 */
.hero-r{display:flex;justify-content:flex-end}
.hv{position:relative;width:min(100%,540px)}
.hv-wm{position:absolute;right:-22px;bottom:-56px;z-index:0;font-size:116px;font-weight:900;letter-spacing:6px;color:transparent;-webkit-text-stroke:2px rgba(19,20,23,.09);user-select:none;pointer-events:none}
.hv-back{position:absolute;top:16px;right:-16px;bottom:-16px;left:30px;z-index:1;background:var(--green);border:2px solid var(--ink)}
.hv-panel{position:relative;z-index:2;background:#fff;border:2px solid var(--ink);box-shadow:16px 16px 0 var(--red)}
.hv-rings{position:absolute;top:-15px;left:28px;right:160px;z-index:3;display:flex;justify-content:space-between}
.hv-rings i{width:12px;height:30px;border:3px solid var(--ink);border-radius:7px;background:#fff}
.hv-top{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--red);color:#fff;font-size:11px;font-weight:800;letter-spacing:2px;padding:12px 16px;margin-top:16px}
.hv-body{display:grid;grid-template-columns:96px 1fr 148px;gap:18px;padding:24px 22px 26px;align-items:start}
.hv-ver small,.hv-list small{display:block;font-size:9px;font-weight:800;letter-spacing:2px;color:var(--muted);margin-bottom:6px}
.hv-ver b{display:block;font-family:var(--num);font-size:54px;font-weight:700;line-height:1;color:var(--green)}
.hv-tag{display:inline-block;margin-top:10px;background:var(--red);color:#fff;font-size:10px;font-weight:800;letter-spacing:1px;padding:3px 8px}
.hv-shot{border:2px solid var(--ink)}
.hv-shot img{width:100%;height:196px;object-fit:cover;object-position:top}
.hv-list ul li{position:relative;font-size:12.5px;font-weight:600;padding:8px 0 8px 14px;border-bottom:1px solid var(--line)}
.hv-list ul li:last-child{border-bottom:none}
.hv-list ul li::before{content:"";position:absolute;left:0;top:14px;width:6px;height:6px;background:var(--red)}
.hv-list ul li:nth-child(2)::before{background:var(--green)}
.hv-foot{display:flex;align-items:center;gap:14px;border-top:1px solid var(--line);padding:0 16px 0 0;font-size:12.5px;color:var(--muted);letter-spacing:.5px;min-height:50px}
.hv-next{display:grid;place-items:center;flex:none;width:76px;height:50px;background:var(--ink);color:#fff;font-size:10px;font-weight:800;letter-spacing:1px}
.hv-seal{position:absolute;right:18px;bottom:18px;z-index:3;width:66px;height:66px;border-radius:50%;border:2px solid var(--ink);background:#fff;display:grid;place-items:center}
.hv-seal img{width:48px;height:48px;border-radius:50%}
.hv-seal span{position:absolute;bottom:-5px;right:-10px;background:var(--red);color:#fff;font-size:9px;font-weight:800;letter-spacing:1px;padding:2px 6px}
.hv-badge{position:absolute;top:-30px;right:-12px;z-index:4;background:var(--ink);color:#fff;font-size:12px;font-weight:800;letter-spacing:2px;padding:8px 14px}
.hv-stat{position:absolute;left:-22px;bottom:-26px;z-index:4;background:var(--green);color:#fff;border:2px solid var(--ink);padding:15px 20px;box-shadow:6px 6px 0 var(--ink)}
.hv-stat b{display:block;font-size:25px;font-weight:900;line-height:1.2}
.hv-stat span{font-size:12px;color:rgba(255,255,255,.85)}

/* 01 书脊墙 */
.spines{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:16px;padding:22px;background:#fff;border:2px solid var(--ink);box-shadow:-12px 12px 0 var(--green)}
.spines::before{content:"";position:absolute;top:-2px;left:-2px;width:30%;height:10px;background:var(--green)}
.spines::after{content:"";position:absolute;bottom:-2px;right:-2px;width:45%;height:10px;background:var(--red)}
.spine{display:flex;flex-direction:column;align-items:center;gap:14px;min-height:300px;padding:24px 12px 18px;background:#fff;border:1px solid var(--line);border-left:6px solid var(--red);transition:transform .2s ease,background .2s ease}
.spine:nth-child(even){border-left-color:var(--green)}
.spine:hover{transform:translateY(-8px);background:#fff8f8}
.spine:nth-child(even):hover{background:#f3faf7}
.spine h3{writing-mode:vertical-rl;letter-spacing:10px;font-size:23px;font-weight:900}
.spine p{font-size:12.5px;color:var(--muted);letter-spacing:2px}
.spine span{margin-top:auto;font-family:var(--num);font-size:11.5px;color:var(--red);font-weight:700}
.spine:nth-child(even) span{color:var(--green)}

/* 02 书屋功能：深色区 顶绿边/底红边 */
.shelf{background:var(--ink);border-top:6px solid var(--green);border-bottom:6px solid var(--red);padding:96px 0}
.shelf-in{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:start}
.shelf-l{position:sticky;top:110px}
.shelf-l h2{color:#fff}
.shelf-l .sec-sub{color:#9aa0ab}
.shelf-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.sf{background:#1b1d23;border:1px solid #2b2e37;padding:26px 24px;transition:border-color .2s ease}
.sf:hover{border-color:var(--red)}
.sf b{display:block;font-family:var(--num);font-size:20px;color:var(--green);margin-bottom:12px}
.sf:nth-child(even) b{color:var(--red)}
.sf h3{color:#fff;font-size:19px;font-weight:800;margin-bottom:10px}
.sf p{font-size:14px;color:#9aa0ab}

/* 03 界面卷轴：1 大 + 2 小 */
#shots{border-bottom:12px solid var(--red)}
.scroll-x{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:18px;padding:18px;background:#fff;border:2px solid var(--ink);box-shadow:14px 14px 0 var(--ink)}
.sx{border:1px solid var(--line);background:#fff}
.sx-h{display:flex;justify-content:space-between;padding:9px 13px;border-bottom:4px solid var(--red);font-family:var(--num);font-size:10.5px;font-weight:700;letter-spacing:1.5px}
.sx-col{display:grid;gap:18px;grid-template-rows:1fr 1fr}
.sx-col .sx-h{border-bottom-color:var(--green)}
.sx img{width:auto;max-width:309px;object-fit:cover;object-position:top;margin:0 auto;display:block}
.sx-a img{height:598px}
.sx-col .sx img{height:236px}
.sx figcaption{padding:12px 14px;font-size:13px;font-weight:700;letter-spacing:.5px}

/* 04 FAQ：错位色块三层（绿块左上 + 红块右下 + 白卡承载） */
.fq-wrap{position:relative;max-width:780px;margin:0 auto}
.fq-wrap::before{content:"";position:absolute;top:-16px;left:-16px;width:45%;height:56%;background:var(--green);z-index:0}
.fq-wrap::after{content:"";position:absolute;right:-16px;bottom:-16px;width:38%;height:46%;background:var(--red);z-index:0}
.fq-list{position:relative;z-index:2;background:#fff;border:2px solid var(--ink)}
.fq{border-top:1px solid var(--line)}
.fq:first-child{border-top:none}
.fq summary{display:flex;align-items:center;gap:14px;padding:18px 22px;cursor:pointer;font-size:15.5px;font-weight:700;list-style:none}
.fq summary::-webkit-details-marker{display:none}
.fq summary b{flex:none;font-family:var(--num);font-size:15px;color:var(--red)}
.fq:nth-child(even) summary b{color:var(--green)}
.fq-i{position:relative;flex:none;width:16px;height:16px;margin-left:auto}
.fq-i::before,.fq-i::after{content:"";position:absolute;background:var(--ink);transition:transform .2s ease}
.fq-i::before{left:0;top:7px;width:16px;height:2px}
.fq-i::after{left:7px;top:0;width:2px;height:16px}
.fq[open]{background:#fdf4f4}
.fq[open] .fq-i::after{transform:rotate(90deg)}
.fq-a{padding:0 22px 20px 60px}
.fq-a p{font-size:14.5px;color:#40454f}

/* 05 书友便签：双行阶梯 + 左色条 */
.vc-wall{position:relative;padding:26px;background:#fff;border:2px solid var(--ink);box-shadow:-12px -12px 0 var(--green)}
.vc-wall::before{content:"";position:absolute;top:-2px;left:-2px;width:40%;height:10px;background:var(--red)}
.vc-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.vc-row2{margin:16px 0 0 56px}
.vc{background:#fff;border:1px solid var(--line);border-left:4px solid var(--red);padding:20px 18px 16px}
.vc-row2 .vc{border-left-color:var(--green)}
.vc-q{display:block;font-family:var(--num);font-size:46px;line-height:.6;color:var(--red);margin-bottom:14px}
.vc-row2 .vc-q{color:var(--green)}
.vc p{font-size:13.5px;color:#33383f}
.vc footer{display:flex;justify-content:space-between;align-items:center;margin-top:14px;padding-top:10px;border-top:1px dashed var(--line);font-size:12px;color:var(--muted)}
.vc footer b{color:var(--ink)}
.vc footer time{font-family:var(--num)}

/* 06 下载区：红面板 + 绿错位板 */
.get{padding:96px 0}
.get-panel{position:relative;isolation:isolate;display:flex;align-items:center;justify-content:space-between;gap:36px;background:var(--red);color:#fff;border:2px solid var(--ink);padding:54px 56px}
.get-panel::before{content:"";position:absolute;inset:18px -18px -18px 18px;background:var(--green);border:2px solid var(--ink);z-index:-1}
.get-l h2{font-size:42px;font-weight:900;letter-spacing:2px;margin:6px 0 12px}
.get-l p{font-size:15px;color:rgba(255,255,255,.88)}
.get-r{flex:none;text-align:center}
.btn-get{background:#fff;color:var(--ink);padding:17px 44px;font-size:17px;box-shadow:6px 6px 0 var(--ink)}
.btn-get:hover{transform:translate(3px,3px);box-shadow:3px 3px 0 var(--ink)}
.get-note{display:block;margin-top:14px;font-size:12.5px;color:rgba(255,255,255,.8);letter-spacing:1px}

/* 页脚 */
.ft{background:var(--ink);color:#fff;border-top:10px solid var(--green)}
.ft-in{display:grid;grid-template-columns:1.4fr 1fr .6fr;gap:44px;padding:56px 24px 40px}
.ft-brand p{margin-top:16px;font-size:13.5px;color:#9aa0ab;max-width:340px}
.ft .brand-t small{color:#9aa0ab}
.ft-nav{display:flex;flex-direction:column;gap:10px}
.ft-nav a,.ft-links a{font-size:13.5px;color:#c8ccd4}
.ft-nav a:hover,.ft-links a:hover{color:var(--red)}
.ft-links{display:flex;flex-direction:column;gap:10px}
.ft-icp{padding:0 24px 10px;font-size:12.5px;color:#7c828d}
.ft-icp a{color:#7c828d}
.ft-icp a:hover{color:#fff}
.ft-c{padding:0 24px 30px;font-size:12.5px;color:#7c828d}

/* 返回顶部 */
.backtop{position:fixed;right:26px;bottom:26px;z-index:60;width:46px;height:46px;background:var(--red);color:#fff;border:2px solid var(--ink);font-size:20px;font-weight:900;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .2s ease,transform .2s ease,visibility .2s}
.backtop.on{opacity:1;visibility:visible;transform:none}

/* 入场动画 */
.rv{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* 响应式 */
@media (max-width:1024px){
  .hero-l h1{font-size:52px}
  .hv{width:min(100%,470px)}
  .hv-body{grid-template-columns:86px 1fr 132px}
  .hv-shot img{height:168px}
  .hv-ver b{font-size:44px}
  .shelf-in{grid-template-columns:1fr;gap:36px}
  .shelf-l{position:static}
  .sx-a img{height:480px}
  .sx-col .sx img{height:197px}
  .get-panel{padding:44px 36px}
}
@media (max-width:760px){
  .sec{padding:64px 0}
  .sec-h h2,.shelf-l h2{font-size:28px}
  .hd-in{height:64px;gap:14px}
  .nav{position:fixed;top:64px;right:0;z-index:49;display:none;flex-direction:column;gap:0;background:#fff;border:2px solid var(--ink);border-right:none;padding:8px 0}
  .nav.open{display:flex}
  .nav a{padding:12px 28px;border-bottom:1px solid var(--line)}
  .burger{display:flex}
  .hd-cta{padding:8px 16px;font-size:13px}
  .hero{padding:44px 0 80px}
  .hero-in{grid-template-columns:1fr;gap:64px}
  .hero-l h1{font-size:40px}
  .hero-stats{gap:24px}
  .hero-r{justify-content:center}
  .hv{width:min(100%,330px)}
  .hv-panel{box-shadow:10px 10px 0 var(--red)}
  .hv-back{top:10px;right:-8px;bottom:-8px;left:16px}
  .hv-wm{font-size:52px;right:-4px;bottom:-28px;letter-spacing:2px}
  .hv-body{grid-template-columns:76px 1fr;gap:12px;padding:16px 14px 18px}
  .hv-list{grid-column:1/-1}
  .hv-list ul li{display:inline-block;border:none;padding:4px 10px 4px 14px;margin-right:6px}
  .hv-list ul li::before{top:11px}
  .hv-ver b{font-size:34px}
  .hv-shot img{height:126px}
  .hv-rings{top:-12px;left:18px;right:118px}
  .hv-rings i{width:9px;height:22px;border-width:2.5px}
  .hv-badge{top:-22px;right:-4px}
  .hv-seal{width:50px;height:50px;right:12px;bottom:12px}
  .hv-seal img{width:34px;height:34px}
  .hv-stat{left:-6px;bottom:-20px;padding:10px 14px}
  .hv-stat b{font-size:19px}
  .spines{grid-template-columns:repeat(2,1fr);box-shadow:none;padding:16px}
  .spine{min-height:250px}
  .shelf{padding:64px 0}
  .shelf-grid{grid-template-columns:1fr}
  .scroll-x{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;box-shadow:none;padding:14px;gap:12px}
  .sx{flex:0 0 78%;scroll-snap-align:start}
  .sx-col{display:contents}
  .sx-a img,.sx-col .sx img{height:390px}
  .fq-wrap::before{top:-10px;left:-10px}
  .fq-wrap::after{right:-10px;bottom:-10px}
  .fq-a{padding:0 18px 18px 52px}
  .vc-wall{box-shadow:none;padding:16px}
  .vc-row{grid-template-columns:1fr}
  .vc-row2{margin:16px 0 0 0}
  .get-panel{flex-direction:column;text-align:center;padding:44px 26px}
  .get-panel::before{inset:10px -10px -10px 10px}
  .get-l h2{font-size:30px}
  .ft-in{grid-template-columns:1fr;gap:28px;padding:44px 24px 28px}
}