/* 异次元 - 二次元漫画与番剧 */
:root{
  --violet:#1653E8;
  --violet-2:#0F3FC0;
  --violet-soft:#E6EEFF;
  --violet-pale:#F1F6FF;
  --lime:#22D3EE;
  --ink:#0C1A33;
  --gray:#66748F;
  --line:#D7E4FA;
  --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:#5A6A85;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:#5BE6F8}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(108deg,#F1F6FF 0%,#F1F6FF 58%,#1653E8 58%,#1350D8 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:#2B3A57;margin:12px 0 14px}
.desc{font-size:15px;color:#5A6A85;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:#DCE9FF;line-height:1.6;margin:4px 0 2px}
.strip-side p small{color:#A9C4E8;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:#B9D2F5}
.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:#5A6A85}

/* 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 #B9D2F5;
}
.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:#2B3A57}
.gnote{
  margin-top:18px;font-size:13px;color:#2B3A57;
  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:#5A6A85;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:#2B3A57;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%,#0B2C7A 72%,#2B7BFF 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:#CFE3FF;max-width:40em}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:4px 0 8px}
.chips span{
  font-size:12px;color:#DCE9FF;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:#5BE6F8}

/* footer */
.ft{background:#E6EEFF;color:#5A6A85;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 #C9DBF5;border-bottom:1px solid #C9DBF5}
.ft-nav a:hover{color:var(--violet-2)}
.ft-c{color:#7C8CA6;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,#F1F6FF 0%,#E9F1FF 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}

/* 平行世界AI - 深海军蓝 + 青色科技风 */
:root{
  --navy:#071224;
  --navy-2:#0B1B3A;
  --cyan:#22D3EE;
  --cyan-soft:#8FE7FF;
}
body{background:#F1F6FF}

/* header dark */
.hd{background:rgba(7,18,36,.94);border-bottom:1px solid rgba(120,190,255,.18)}
.hd-brand b{color:var(--cyan-soft)}
.hd-brand small{color:#8FA6C4}
.nav a{color:#B7C9E4}
.nav a:hover{background:rgba(34,211,238,.12);color:var(--cyan-soft)}
.cta{background:var(--cyan);color:#06213A;box-shadow:0 8px 18px rgba(34,211,238,.28)}
.cta:hover{background:#5BE6F8}

/* hero */
.hero{
  padding:78px 0 92px;
  background:
    radial-gradient(900px 430px at 80% 14%,rgba(34,211,238,.20),transparent 62%),
    radial-gradient(720px 400px at 8% 88%,rgba(22,83,232,.42),transparent 66%),
    var(--navy);
}
.hero-in{grid-template-columns:.98fr 1.02fr;gap:40px}
.kick{background:rgba(34,211,238,.10);border-color:rgba(34,211,238,.32);color:var(--cyan-soft)}
h1{color:#F2F8FF}
h1 span{color:var(--cyan);z-index:0}
h1 span::after{height:7px;bottom:2px;background:linear-gradient(90deg,var(--cyan),rgba(34,211,238,0))}
.lead{color:#CFE3FF}
.desc{color:#9FB4D2}
.btn{background:var(--cyan);color:#06213A;box-shadow:0 12px 28px rgba(34,211,238,.26)}
.btn:hover{background:#5BE6F8;transform:translateY(-2px)}
.ghost{color:var(--cyan-soft);border-bottom-color:rgba(143,231,255,.5)}
.ghost:hover{color:var(--cyan)}
.facts li{background:rgba(255,255,255,.05);border-color:rgba(120,190,255,.22)}
.facts b{color:var(--cyan-soft)}
.facts span{color:#8FA6C4}

/* hero stage */
.stage{position:relative;height:520px}
.sline{position:absolute;left:0;right:0;top:46%;height:1px;background:linear-gradient(90deg,transparent,rgba(34,211,238,.55),transparent)}
.ph{position:absolute;border-radius:20px;overflow:hidden;border:6px solid rgba(255,255,255,.92);box-shadow:0 34px 70px rgba(0,0,0,.55)}
.ph img{width:100%;height:100%;object-fit:cover;object-position:top center}
.ph-a{width:252px;height:470px;right:2%;top:0;transform:rotate(3.6deg)}
.ph-b{width:172px;height:330px;left:4%;bottom:-8px;transform:rotate(-7deg);border-color:rgba(34,211,238,.85);box-shadow:0 26px 54px rgba(0,0,0,.5)}
.sbadge{
  position:absolute;left:2%;top:20px;font-size:12px;letter-spacing:.18em;color:var(--cyan-soft);
  border:1px solid rgba(34,211,238,.38);background:rgba(6,20,45,.72);
  border-radius:999px;padding:6px 14px;
}

/* sections */
.sec{background:#F1F6FF}
.sec.violet{background:#E6EEFF}
.sh h2::after{background:var(--cyan)}
.eyebrow{color:#0F3FC0}

/* bento features */
.tiles{grid-template-columns:repeat(4,1fr);gap:16px}
.tile{border-radius:16px;padding:24px 22px;box-shadow:0 10px 26px rgba(12,26,51,.05);transition:.22s}
.tile:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(12,26,51,.12);border-color:#B9D2F5}
.tile:nth-child(1),.tile:nth-child(2){grid-column:span 2;padding:26px 24px}
.tile:nth-child(1){background:linear-gradient(140deg,#E8FAFF 0%,#FFFFFF 70%)}
.tile:nth-child(2){background:linear-gradient(140deg,#EDF3FF 0%,#FFFFFF 70%)}
.ti{background:var(--navy);color:var(--cyan);border-radius:12px;width:44px;height:44px;margin-bottom:14px}
.tile h4{font-size:17px}
.tile p{font-size:13.5px;color:#5A6A85}

/* dark screens */
.sec.navy{background:var(--navy-2)}
.sec.navy .sh h2{color:#F2F8FF}
.sec.navy .sh p{color:#93A9C7}
.sec.navy .eyebrow{background:rgba(34,211,238,.14);color:var(--cyan-soft)}
.cols{gap:26px;align-items:start}
.col{background:rgba(255,255,255,.055);border:1px solid rgba(120,190,255,.2);border-radius:16px;padding:12px 12px 16px;box-shadow:none;position:relative}
.col:nth-child(1){margin-top:0}
.col:nth-child(2){margin-top:38px}
.col:nth-child(3){margin-top:16px}
.col img{height:320px;border-radius:10px}
.col .num{
  position:absolute;top:-13px;left:14px;z-index:2;
  background:var(--cyan);color:#06213A;font-size:11px;font-weight:800;letter-spacing:.1em;
  border-radius:6px;padding:3px 9px;
}
.col figcaption{color:#93A9C7;margin-top:12px}
.col figcaption b{display:inline;color:var(--cyan-soft);font-size:14px;margin-right:6px}

/* guide */
.steps{border-left:0;padding-left:0;gap:12px}
.steps li{grid-template-columns:62px 1fr;border-radius:14px;padding:18px 22px;border:1px solid #D7E4FA}
.steps li::before{display:none}
.steps li:nth-child(odd){background:#fff}
.steps li:nth-child(even){background:#E9F1FF;border-color:#CFE0FA}
.steps b{width:auto;height:auto;background:none;color:#A6BEDA;font-size:27px;letter-spacing:-.03em;text-align:left}
.steps span{color:#2B3A57}
.gnote{border-left:0;border-top:2px solid var(--cyan);background:#fff}

/* faq rows */
.qa{grid-template-columns:1fr;gap:0;background:#fff;border:1px solid #D7E4FA;border-radius:16px;overflow:hidden}
.q{display:grid;grid-template-columns:.92fr 1.08fr;gap:26px;align-items:start;border:0;border-radius:0;border-top:1px solid #E4EDFB;padding:20px 24px}
.q:first-child{border-top:0}
.q:nth-child(even){background:#F6FAFF}
.q h3{font-size:16px;color:#0C1A33}
.q h3::before{background:var(--navy);color:var(--cyan);border-radius:50%}
.q p{padding-left:0;margin-top:0;font-size:13.8px;color:#5A6A85}

/* reviews */
.bub{background:#fff;border:1px solid #D7E4FA;border-top:0;border-radius:14px;padding:0;overflow:hidden;box-shadow:0 12px 26px rgba(12,26,51,.06)}
.bub blockquote{padding:20px 20px 16px;color:#2B3A57}
.bub blockquote::before{
  content:"\201C";display:block;font-family:Georgia,serif;
  font-size:46px;line-height:.8;color:var(--cyan);margin-bottom:6px;
}
.who{padding:12px 20px;background:#F4F9FF;border-top:1px solid #E4EDFB}
.who i{background:var(--navy);color:var(--cyan);border-radius:50%}

/* download */
.get{
  background:
    radial-gradient(620px 320px at 50% 0%,rgba(34,211,238,.24),transparent 66%),
    var(--navy);
}
.get h2 em{color:var(--cyan)}
.get .btn{background:var(--cyan);color:#06213A}
.get .btn:hover{background:#5BE6F8}
.chips span{border-color:rgba(143,231,255,.35);color:#CFE3FF}

/* footer */
.ft{background:#E9F1FF;color:#5A6A85}
.ft-l{color:#1653E8}
.ft-nav{border-color:#D2E1F7}
.ft-c{color:#7C8CA6}
.backtop{background:var(--navy)}
.backtop:hover{background:#0F3FC0}

@media (max-width:960px){
  .hero{padding:56px 0 62px}
  .hero-in{grid-template-columns:1fr;gap:34px}
  .stage{height:450px;max-width:430px;margin:0 auto;width:100%}
  .ph-a{width:196px;height:350px;right:0}
  .ph-b{width:134px;height:252px;left:0}
  .tiles{grid-template-columns:1fr 1fr}
  .tile:nth-child(1),.tile:nth-child(2){grid-column:span 2}
  .cols{grid-template-columns:1fr 1fr}
  .col:nth-child(2){margin-top:26px}
  .col:nth-child(3){margin-top:0}
  .qa{grid-template-columns:1fr}
  .bubbles{grid-template-columns:1fr}
  .nav{background:#0A1730;border-bottom:1px solid rgba(120,190,255,.2)}
  .nav a{color:#B7C9E4}
}
@media (max-width:600px){
  .sec{padding:52px 0}
  .tiles{grid-template-columns:1fr}
  .tile:nth-child(1),.tile:nth-child(2){grid-column:auto}
  .cols{grid-template-columns:1fr;gap:34px}
  .col:nth-child(2),.col:nth-child(3){margin-top:0}
  .col img{height:340px}
  .q{grid-template-columns:1fr;gap:8px;padding:18px}
  .q p{padding-left:27px}
  .stage{height:400px}
  .ph-a{width:170px;height:300px}
  .ph-b{width:118px;height:220px}
}

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