/* 异次元 - 二次元漫画与番剧 */
:root{
  --violet:#121214;
  --violet-2:#2A2A30;
  --violet-soft:#EAE4FF;
  --violet-pale:#F7F7F4;
  --lime:#6C4DF6;
  --ink:#121214;
  --gray:#75757D;
  --line:#DBDBD6;
  --card:#FFFFFF;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  color:var(--ink);background:var(--violet-pale);line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{width:min(1100px,92%);margin:0 auto}
h1,h2,h3,h4{line-height:1.3}

/* header */
.hd{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.hd-in{display:flex;align-items:center;gap:22px;height:70px}
.hd-brand{display:flex;align-items:center;gap:11px}
.hd-brand img{border-radius:10px}
.hd-brand b{display:block;font-size:17px;letter-spacing:.04em;color:var(--violet)}
.hd-brand small{display:block;font-size:10.5px;color:var(--gray);letter-spacing:.12em}
.nav{display:flex;gap:6px;margin-left:auto}
.nav a{
  font-size:14px;color:#75757D;padding:7px 12px;border-radius:7px;transition:.2s;
}
.nav a:hover{background:var(--violet-soft);color:var(--violet)}
.nav-toggle{display:none;background:none;border:0;color:var(--violet);cursor:pointer;padding:6px}
.cta{
  background:var(--lime);color:var(--ink);font-weight:800;font-size:14px;
  padding:10px 20px;border-radius:7px;
  box-shadow:0 8px 18px rgba(108,77,246,.2);
  transition:.2s;
}
.cta:hover{transform:translateY(-2px);background:#8B6DFB}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(108deg,#F7F7F4 0%,#F7F7F4 58%,#121214 58%,#4B31C9 100%);
  padding:64px 0 78px;
}
.hero-in{position:relative;display:grid;grid-template-columns:1.04fr .96fr;gap:46px;align-items:center}
.kick{
  display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--violet);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
h1{font-size:clamp(44px,6.6vw,74px);font-weight:800;color:var(--ink);letter-spacing:.02em}
h1 span{color:var(--violet);position:relative}
h1 span::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;
  background:var(--lime);z-index:-1;
}
.lead{font-size:19px;font-weight:600;color:#2A2A30;margin:12px 0 14px}
.desc{font-size:15px;color:#75757D;max-width:33em}
.acts{display:flex;align-items:center;gap:16px;margin:26px 0 24px}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--violet);color:#fff;font-weight:700;font-size:15px;
  padding:14px 26px;border-radius:7px;
  box-shadow:0 10px 24px rgba(108,77,246,.3);
  transition:.2s;
}
.btn svg{width:18px;height:18px}
.btn:hover{transform:translateY(-2px);background:var(--violet-2)}
.ghost{font-size:14px;font-weight:600;color:var(--violet);border-bottom:1.5px dashed var(--violet);padding-bottom:2px}
.ghost:hover{color:var(--violet-2)}
.facts{list-style:none;display:flex;gap:10px;flex-wrap:wrap}
.facts li{
  background:#fff;border:1px solid var(--line);border-radius:7px;
  padding:10px 14px;min-width:112px;
}
.facts b{display:block;font-size:14px;color:var(--violet)}
.facts span{font-size:11.5px;color:var(--gray)}

/* hero strip */
.strip{position:relative;display:flex;gap:16px;justify-content:flex-end;align-items:flex-start}
.roll{
  width:58%;border-radius:14px;overflow:hidden;
  border:5px solid rgba(255,255,255,.92);
  box-shadow:0 24px 46px rgba(20,10,50,.35);
}
.roll img{width:100%;height:440px;object-fit:cover;object-position:top center}
.strip-side{display:grid;gap:10px;align-content:start;padding-top:6px}
.dot{width:7px;height:22px;border-radius:4px;background:rgba(255,255,255,.35);display:block}
.dot.on{background:var(--lime)}
.strip-side p{font-size:12px;color:#F0EDFF;line-height:1.6;margin:4px 0 2px}
.strip-side p small{color:#C9C9C4;font-size:11px}
.mini{
  width:104px;border-radius:10px;overflow:hidden;
  border:4px solid rgba(255,255,255,.92);box-shadow:0 14px 28px rgba(20,10,50,.3);
}
.tagfl{
  position:absolute;left:0;bottom:-14px;
  background:var(--lime);color:var(--ink);font-size:12px;font-weight:800;
  padding:7px 14px;border-radius:7px;
}

/* sections */
.sec{padding:76px 0;background:var(--violet-pale)}
.sec.violet{background:var(--violet-soft)}
.sh{margin-bottom:38px;max-width:44em}
.eyebrow{
  display:inline-block;font-size:11px;letter-spacing:.24em;
  color:var(--violet-2);background:#fff;border-radius:999px;padding:4px 12px;margin-bottom:12px;
}
.sec.violet .eyebrow{background:#fff}
.sh h2{font-size:clamp(25px,3.3vw,33px);color:var(--ink);font-weight:800}
.sh h2::after{content:"";display:block;width:44px;height:3px;background:var(--lime);margin-top:10px}
.sh p{font-size:14px;color:var(--gray);margin-top:10px}

/* features */
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tile{
  background:var(--card);border-radius:12px;padding:22px 20px;
  border:1px solid var(--line);
  box-shadow:0 8px 22px rgba(36,28,61,.05);
  transition:.22s;
}
.tile:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(36,28,61,.11);border-color:#D7D7D2}
.ti{
  display:grid;place-items:center;width:42px;height:42px;border-radius:9px;
  background:var(--lime);color:var(--ink);margin-bottom:12px;
}
.ti svg{width:20px;height:20px}
.tile h4{font-size:16.5px;color:var(--ink);margin-bottom:6px}
.tile p{font-size:13.5px;color:#75757D}

/* screens */
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.col{
  background:#fff;border-radius:14px;padding:10px 10px 14px;
  box-shadow:0 14px 30px rgba(36,28,61,.1);
}
.col img{width:100%;height:300px;object-fit:cover;object-position:top center;border-radius:8px}
.col.lift{margin-top:-22px;box-shadow:0 20px 38px rgba(36,28,61,.18);border:2px solid var(--lime)}
.col.lift img{height:340px}
.col figcaption{font-size:12.5px;color:var(--gray);margin-top:10px;padding:0 4px}
.col figcaption b{display:block;color:var(--violet);font-size:14px;margin-bottom:2px}

/* guide */
.steps{
  list-style:none;display:grid;gap:14px;position:relative;
  padding-left:26px;border-left:2px dashed #D7D7D2;
}
.steps li{
  position:relative;display:grid;grid-template-columns:46px 1fr;gap:12px;align-items:center;
  background:#fff;border-radius:10px;padding:14px 18px;
  border:1px solid var(--line);
}
.steps li::before{
  content:"";position:absolute;left:-33px;top:50%;width:12px;height:12px;
  margin-top:-6px;border-radius:50%;background:var(--lime);border:2px solid #fff;
}
.steps b{
  font-size:13px;font-weight:800;color:var(--violet);
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:var(--violet-soft);
}
.steps span{font-size:14.5px;color:#2A2A30}
.gnote{
  margin-top:18px;font-size:13px;color:#2A2A30;
  background:#fff;border-radius:8px;padding:12px 16px;
  border-left:3px solid var(--violet);
}

/* faq */
.qa{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.q{
  background:#fff;border-radius:10px;padding:18px 20px;
  border:1px solid var(--line);
}
.q h3{
  font-size:15.5px;color:var(--ink);display:flex;gap:9px;align-items:baseline;
}
.q h3::before{
  content:"?";color:var(--ink);background:var(--lime);font-weight:800;font-size:12px;
  width:18px;height:18px;border-radius:5px;display:grid;place-items:center;flex:0 0 auto;
  line-height:1;
}
.q p{font-size:13.5px;color:#75757D;margin-top:7px;padding-left:27px}

/* reviews */
.bubbles{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.bub{
  background:#fff;border-radius:10px;padding:20px;
  border-top:3px solid var(--violet);
  box-shadow:0 12px 26px rgba(36,28,61,.08);
}
.bub blockquote{font-size:13.8px;color:#2A2A30;line-height:1.8}
.who{
  display:flex;align-items:center;gap:8px;margin-top:14px;
  padding-top:10px;border-top:1px dashed var(--line);
  font-size:11.5px;color:var(--gray);
}
.who i{
  font-style:normal;width:26px;height:26px;border-radius:7px;
  display:grid;place-items:center;background:var(--lime);color:var(--ink);
  font-size:12px;font-weight:700;
}

/* get */
.get{
  background:linear-gradient(150deg,var(--violet) 0%,#2A2A30 72%,#6C4DF6 100%);
  color:#fff;padding:66px 0 74px;
}
.get-in{display:grid;justify-items:center;text-align:center;gap:13px}
.get img{border-radius:12px;background:#fff;padding:3px}
.get h2{font-size:clamp(25px,3.5vw,34px);font-weight:800}
.get h2 em{font-style:normal;color:var(--lime)}
.get p{font-size:14.5px;color:#E3E3DE;max-width:40em}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:4px 0 8px}
.chips span{
  font-size:12px;color:#F0EDFF;border:1px solid rgba(255,255,255,.35);
  border-radius:5px;padding:5px 12px;
}
.get .btn{background:var(--lime);color:var(--ink);box-shadow:0 12px 26px rgba(0,0,0,.18)}
.get .btn:hover{background:#8B6DFB}

/* footer */
.ft{background:#EAE4FF;color:#75757D;padding:42px 0 28px;font-size:13px}
.ft-in{display:grid;gap:14px}
.ft-l{display:flex;align-items:center;gap:10px;color:var(--violet);font-size:16px}
.ft-l img{border-radius:8px}
.ft p{max-width:52em;line-height:1.8}
.ft-nav{display:flex;gap:18px;flex-wrap:wrap;padding:12px 0;border-top:1px solid #D7D7D2;border-bottom:1px solid #D7D7D2}
.ft-nav a:hover{color:var(--violet-2)}
.ft-c{color:#8A8A90;font-size:12px;line-height:1.9}

/* backtop */
.backtop{
  position:fixed;right:22px;bottom:86px;z-index:50;width:42px;height:42px;
  display:grid;place-items:center;border:0;border-radius:9px;
  background:var(--violet);color:#fff;cursor:pointer;
  box-shadow:0 10px 22px rgba(108,77,246,.3);
  opacity:0;pointer-events:none;transition:.25s;
}
.backtop.show{opacity:1;pointer-events:auto}

@media (max-width:960px){
  .hero{background:linear-gradient(170deg,#F7F7F4 0%,#FCFCFA 100%)}
  .hero-in{grid-template-columns:1fr;gap:36px}
  .strip{justify-content:center}
  .roll img{height:400px}
  .tiles{grid-template-columns:1fr 1fr}
  .cols{grid-template-columns:1fr 1fr}
  .col.lift{margin-top:0}
  .col.lift img{height:300px}
  .qa{grid-template-columns:1fr}
  .bubbles{grid-template-columns:1fr}
  .nav{
    position:fixed;left:0;right:0;top:70px;
    background:#fff;flex-direction:column;gap:0;
    padding:8px 0 14px;border-bottom:1px solid var(--line);
    display:none;
  }
  .nav.open{display:flex}
  .nav a{border-radius:0;padding:12px 6%}
  .nav-toggle{display:block;margin-left:auto}
  .cta{padding:9px 16px;font-size:13px}
}
@media (max-width:600px){
  .hero{padding:44px 0 58px}
  .sec{padding:52px 0}
  .tiles{grid-template-columns:1fr}
  .cols{grid-template-columns:1fr}
  .roll{width:64%}
  .roll img{height:330px}
  .facts li{min-width:calc(50% - 5px)}
  h1{font-size:clamp(38px,11vw,52px)}
}
.mini img{height:190px;object-fit:cover;object-position:top center}

/* 灵境ai - 黑白印刷 · 电光紫 · 硬边直角 · 规格表 */
:root{
  --paper:#F7F7F4;
  --black:#121214;
  --ink:#121214;
  --violet:#6C4DF6;
  --violet2:#4B31C9;
  --lav:#EAE4FF;
  --gray:#75757D;
  --line:#DBDBD6;
}
body{background:var(--paper);color:var(--ink)}

/* header */
.hd{background:#fff;border-bottom:2px solid var(--black);box-shadow:none}
.hd-brand img{border-radius:0}
.hd-brand b{color:var(--black);letter-spacing:.01em}
.hd-brand small{color:var(--gray);letter-spacing:.1em}
.nav a{color:#2A2A30;font-weight:600;border-radius:0;padding:7px 12px}
.nav a:hover{background:var(--lav);color:var(--violet)}
.cta{background:var(--black);color:#fff;border-radius:0;padding:11px 19px;box-shadow:none}
.cta:hover{background:var(--violet);color:#fff;transform:none}

/* hero：左文右版 + 巨型水印字 */
.hero{
  position:relative;overflow:hidden;padding:66px 0 84px;
  background:
    linear-gradient(90deg,rgba(18,18,20,.045) 1px,transparent 1px) 0 0/80px 80px,
    linear-gradient(0deg,rgba(18,18,20,.045) 1px,transparent 1px) 0 0/80px 80px,
    var(--paper);
}
.hero::after{
  content:"境";position:absolute;right:-2%;top:-52px;font-size:440px;line-height:1;font-weight:900;
  color:transparent;-webkit-text-stroke:1px rgba(18,18,20,.07);pointer-events:none;
}
.hero-in{position:relative;z-index:1;display:grid;grid-template-columns:1.04fr .96fr;gap:50px;align-items:center}
.kick{
  display:inline-block;background:var(--black);color:#fff;border-radius:0;
  font-size:10.5px;letter-spacing:.24em;padding:7px 13px;margin-bottom:20px;
}
h1{font-size:clamp(54px,7.6vw,88px);font-weight:900;color:var(--black);letter-spacing:-.02em;margin:0 0 10px}
h1 em{font-style:normal;display:inline-block;position:relative;color:var(--violet)}
h1 em::after{content:"";position:absolute;left:0;right:0;bottom:8px;height:12px;background:var(--violet);opacity:.22;z-index:-1}
.lead{font-size:19px;font-weight:700;color:#2A2A30;margin:6px 0 14px}
.desc{font-size:14.8px;color:var(--gray);max-width:34em;line-height:1.95}
.acts{margin:26px 0 24px;display:flex;align-items:center;gap:22px}
.btn{background:var(--black);color:#fff;border-radius:0;padding:14px 26px;box-shadow:none;font-weight:700}
.btn:hover{background:var(--violet);transform:none;box-shadow:none}
.ghost{color:var(--violet);border-bottom:1px solid var(--violet);font-weight:700;padding-bottom:2px}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid var(--black);max-width:520px;margin-top:4px}
.facts li{border:0;background:transparent;border-left:1px solid var(--line);border-radius:0;padding:12px 0 0 14px;min-width:0}
.facts li:first-child{border-left:0;padding-left:0}
.facts b{display:block;color:var(--black);font-size:14px}
.facts span{display:block;color:var(--gray);font-size:11.5px;margin-top:2px}

.plate{position:relative;border:2px solid var(--black);background:#fff;padding:10px;box-shadow:14px 14px 0 var(--lav)}
.plabel{position:absolute;left:-2px;top:-2px;z-index:2;background:var(--black);color:#fff;font-size:10px;letter-spacing:.18em;padding:7px 12px}
.pimg{margin:0;overflow:hidden;background:#0F1024}
.pimg img{width:100%;height:560px;object-fit:cover;object-position:top center}
.pside{position:absolute;right:-28px;top:80px;writing-mode:vertical-rl;font-size:10px;letter-spacing:.32em;color:#A4A4AC}

/* sections */
.sec{padding:80px 0;background:var(--paper)}
.scrsec{background:#fff;border-top:2px solid var(--black);border-bottom:2px solid var(--black)}
.sh{max-width:46em}
.eyebrow{
  display:inline-block;background:var(--black);color:#fff;border:0;border-radius:0;
  padding:5px 11px;font-size:10px;letter-spacing:.24em;font-weight:800;margin-bottom:13px;
}
.sh h2{font-size:clamp(26px,3.4vw,34px);color:var(--black);letter-spacing:-.02em}
.sh h2::after{width:56px;height:4px;background:var(--violet);border-radius:0;margin-top:12px}
.sh p{font-size:13.8px;color:var(--gray);line-height:1.85}

/* features：规格表行 */
.specs{border-top:2px solid var(--black)}
.spec{
  display:grid;grid-template-columns:78px 190px 1fr;gap:20px;align-items:baseline;
  padding:22px 4px;border-bottom:1px solid var(--line);transition:background .16s ease;
}
.spec:hover{background:#fff}
.sn{font-family:"Courier New",monospace;font-size:13px;font-weight:700;color:var(--violet);letter-spacing:.1em}
.spec h4{font-size:18px;color:var(--black)}
.spec p{font-size:13.6px;color:var(--gray);line-height:1.85}

/* screens：黑框胶片版 */
.plates{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.pcard{border:2px solid var(--black);background:var(--paper)}
.pcard:nth-child(2){margin-top:-26px}
.pbar{display:flex;align-items:center;gap:12px;background:var(--black);color:#fff;padding:9px 14px}
.pbar span{font-family:"Courier New",monospace;font-size:10px;letter-spacing:.14em;color:#B9B9C4}
.pbar b{font-size:13px;font-weight:700}
.pcard figure{margin:0;overflow:hidden;background:#0F1024}
.pcard img{width:100%;height:420px;object-fit:cover;object-position:top center}
.pcard p{padding:16px 18px 20px;font-size:13.2px;color:var(--gray);line-height:1.85;border-top:1px solid var(--line)}

/* guide：章次表 */
.chapters{list-style:none;border-top:2px solid var(--black)}
.chapters li{display:grid;grid-template-columns:90px 200px 1fr;gap:22px;align-items:baseline;padding:20px 4px;border-bottom:1px solid var(--line)}
.cn{font-family:Georgia,serif;font-size:30px;color:var(--violet);line-height:1}
.chapters b{font-size:16.5px;color:var(--black)}
.chapters li>span:last-child{font-size:13.4px;color:var(--gray);line-height:1.85}
.gnote{margin-top:26px;background:var(--lav);border-left:4px solid var(--violet);color:#3A3550;padding:14px 18px;font-size:13px}

/* faq：双列横线格 */
.qgrid{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.qi{border-top:2px solid var(--black);padding:18px 0 22px}
.qi:last-child{grid-column:1/-1}
.qn{font-family:"Courier New",monospace;font-size:11px;font-weight:700;color:var(--violet);letter-spacing:.12em}
.qi h3{font-size:16px;margin:6px 0 7px;color:var(--black)}
.qi p{font-size:13.3px;color:var(--gray);line-height:1.85}

/* reviews：三栏分格 */
.sec.band{background:var(--paper)}
.trios{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--black)}
.trio{padding:24px 22px 18px;border-left:1px solid var(--line)}
.trio:first-child{border-left:0;padding-left:0}
.tq{font-family:Georgia,serif;font-size:46px;line-height:.8;color:var(--violet);display:block}
.trio blockquote{font-size:13.8px;color:#2A2A30;line-height:1.9;margin-top:6px}
.who{display:flex;align-items:center;gap:8px;margin-top:14px;border-top:1px dashed var(--line);padding-top:10px;font-size:11.5px;color:var(--gray)}
.who i{width:24px;height:24px;display:grid;place-items:center;background:var(--black);color:#fff;border-radius:0;font-size:11px;font-style:normal;font-weight:700}

/* get：黑场 + 虚线存根 */
.get{background:var(--black);color:#fff;padding:0}
.get-in{display:grid;grid-template-columns:1.2fr .8fr;gap:44px;align-items:stretch;padding:64px 0 60px;text-align:left;justify-items:stretch}
.gk{display:inline-block;font-family:"Courier New",monospace;font-size:10px;letter-spacing:.24em;color:#A996FF;border:1px solid rgba(108,77,246,.55);padding:5px 10px}
.get h2{color:#fff;font-size:clamp(26px,3.6vw,38px);margin-top:16px}
.get h2 em{font-style:normal;color:#B7A6FF}
.get p{color:#A9A9B4;font-size:14px;line-height:1.9;margin-top:12px;max-width:34em}
.chips{justify-content:flex-start;margin:22px 0 0}
.chips span{border:1px solid rgba(255,255,255,.24);color:#D8D8DE;border-radius:0;font-size:11.5px;padding:5px 11px;background:transparent}
.stub{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:14px;border-left:1px dashed rgba(255,255,255,.28);padding-left:40px}
.stub img{border-radius:0}
.get .btn{background:var(--violet);color:#fff;border-radius:0;box-shadow:none}
.get .btn:hover{background:var(--violet2)}
.stub small{font-size:11px;color:#8C8C98}

/* footer */
.ft{background:var(--paper);border-top:2px solid var(--black);color:var(--gray);padding:44px 0 30px}
.ft-l{color:var(--black)}
.ft-l img{border-radius:0}
.ft-nav{border-color:var(--line)}
.ft-nav a{color:#2A2A30;font-weight:600}
.ft-c{color:#9A9AA0}
.backtop{background:var(--black);color:#fff;border-radius:0}

@media (max-width:960px){
  .hero{padding:52px 0 70px}
  .hero::after{font-size:320px;top:-24px;right:-6%}
  .hero-in{grid-template-columns:1fr;gap:34px}
  .plate{max-width:470px;margin:0 auto;width:100%}
  .pimg img{height:470px}
  .pside{right:-22px;top:60px}
  .spec{grid-template-columns:64px 160px 1fr;gap:16px}
  .chapters li{grid-template-columns:70px 170px 1fr;gap:16px}
  .plates{gap:20px}
  .pcard img{height:360px}
  .trios{grid-template-columns:1fr}
  .trio{border-left:0;border-top:1px solid var(--line);padding:20px 0 16px}
  .trio:first-child{border-top:0}
  .get-in{grid-template-columns:1fr;gap:30px;padding:50px 0 48px}
  .stub{border-left:0;border-top:1px dashed rgba(255,255,255,.28);padding-left:0;padding-top:26px}
  .nav{background:#fff}
  .nav a{color:#2A2A30}
}
@media (max-width:760px){
  .sec{padding:54px 0}
  .hero::after{display:none}
  h1{font-size:clamp(50px,15vw,68px)}
  .facts{grid-template-columns:1fr}
  .facts li{border-left:0;padding:10px 0 0}
  .plate{box-shadow:8px 8px 0 var(--lav)}
  .pimg img{height:400px}
  .pside{display:none}
  .spec{grid-template-columns:52px 1fr;gap:6px 12px;padding:18px 0}
  .sn{font-size:12px}
  .spec p{grid-column:2}
  .plates{grid-template-columns:1fr;gap:24px}
  .pcard:nth-child(2){margin-top:0}
  .pcard img{height:380px}
  .chapters li{grid-template-columns:52px 1fr;gap:6px 12px;padding:16px 0}
  .cn{font-size:24px}
  .chapters li>span:last-child{grid-column:2}
  .qgrid{grid-template-columns:1fr}
  .qi:last-child{grid-column:auto}
  .get-in{padding:44px 0}
  .get h2{font-size:27px}
}

/* backtop 修复：JS 加 on 类 */
.backtop.on{opacity:1;pointer-events:auto}