/* 异次元 - 二次元漫画与番剧 */
:root{
  --violet:#E4BE7F;
  --violet-2:#C9A05C;
  --violet-soft:#0B1222;
  --violet-pale:#0E1526;
  --lime:#E4BE7F;
  --ink:#E8EDF7;
  --gray:#96A1B8;
  --line:#27314C;
  --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:#AEB9CE;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:#F0CF95}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(108deg,#0E1526 0%,#0E1526 58%,#E4BE7F 58%,#C9A05C 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:#D5DCEA;margin:12px 0 14px}
.desc{font-size:15px;color:#AEB9CE;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:#C9D4E8;line-height:1.6;margin:4px 0 2px}
.strip-side p small{color:#8C9AB4;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:#3A4666}
.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:#AEB9CE}

/* 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 #3A4666;
}
.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:#D5DCEA}
.gnote{
  margin-top:18px;font-size:13px;color:#D5DCEA;
  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:#AEB9CE;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:#D5DCEA;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%,#B0894C 72%,#E4BE7F 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:#AEBAD2;max-width:40em}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:4px 0 8px}
.chips span{
  font-size:12px;color:#C9D4E8;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:#F0CF95}

/* footer */
.ft{background:#0B1222;color:#AEB9CE;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 #26314B;border-bottom:1px solid #26314B}
.ft-nav a:hover{color:var(--violet-2)}
.ft-c{color:#6E7A93;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,#0E1526 0%,#162034 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}

/* 筑梦岛 - 夜蓝 · 月金 · 三幕分栏与档案式展示 */
:root{
  --night:#0E1526;
  --night2:#0B1222;
  --panel:#141E36;
  --paper:#F2F4FA;
  --gold:#E4BE7F;
  --gold2:#C9A05C;
  --ink:#E8EDF7;
  --gray:#96A1B8;
  --line:#27314C;
}
body{background:var(--night);color:var(--ink)}

/* header */
.hd{background:rgba(14,21,38,.92);border-bottom:1px solid rgba(255,255,255,.09);box-shadow:none}
.hd-brand img{border-radius:12px}
.hd-brand b{color:var(--paper);letter-spacing:.06em}
.hd-brand small{color:var(--gray);letter-spacing:.14em}
.nav a{color:#AEB9CE;border-radius:2px}
.nav a:hover{background:rgba(228,190,127,.1);color:var(--gold)}
.cta{background:var(--gold);color:#121926;border-radius:2px;box-shadow:0 8px 20px rgba(228,190,127,.16)}
.cta:hover{background:#F0CF95;color:#121926;transform:none}

/* hero */
.hero{
  position:relative;overflow:hidden;text-align:center;padding:62px 0 16px;
  background:
    radial-gradient(820px 460px at 50% -6%,rgba(228,190,127,.13),transparent 64%),
    radial-gradient(600px 380px at 92% 76%,rgba(94,138,255,.08),transparent 70%),
    var(--night);
}
.hero-in{display:block}
.hero-copy{max-width:790px;margin:0 auto}
.kick{
  display:inline-block;font-family:"Courier New",monospace;font-size:10.5px;letter-spacing:.3em;
  color:var(--gold);background:transparent;border:1px solid rgba(228,190,127,.38);border-radius:2px;padding:6px 13px;margin-bottom:20px;
}
h1{font-size:clamp(46px,7.2vw,88px);font-weight:800;letter-spacing:.07em;color:var(--paper);line-height:1.06}
h1 span{color:var(--gold);position:relative}
h1 span::after{display:none}
.lead{color:#DDE5F3;font-size:19px;font-weight:600;margin:14px 0 14px}
.desc{color:var(--gray);font-size:14.6px;line-height:1.95;max-width:41em;margin:0 auto;text-align:left}
.acts{display:flex;align-items:center;justify-content:center;gap:20px;margin:26px 0 22px}
.btn{background:var(--gold);color:#121926;border-radius:2px;box-shadow:none}
.btn:hover{background:#F0CF95;transform:none}
.ghost{color:var(--gold);border-bottom:1px dashed rgba(228,190,127,.55)}
.ghost:hover{color:#F0CF95}
.facts{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.facts li{background:transparent;border:1px solid rgba(255,255,255,.1);border-radius:2px;padding:9px 16px;min-width:0}
.facts b{color:var(--gold);font-size:13px;letter-spacing:.05em}
.facts span{color:var(--gray);font-size:11.5px}

/* 三幕 */
.three{
  list-style:none;display:grid;grid-template-columns:repeat(3,1fr);
  margin:48px auto 0;max-width:1010px;border-top:1px solid rgba(228,190,127,.28);
}
.three li{padding:20px 26px 6px;border-left:1px solid rgba(255,255,255,.08);text-align:left}
.three li:first-child{border-left:0;padding-left:0}
.three .rn{font-family:"Courier New",monospace;font-size:10.5px;letter-spacing:.26em;color:var(--gold2)}
.three b{display:block;font-size:17px;color:var(--paper);margin:7px 0 4px;font-weight:700}
.three li span:last-child{font-size:12.5px;color:var(--gray);line-height:1.8}

/* sections */
.sec{background:var(--night);padding:78px 0}
.sec.violet{background:var(--night2);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}
.sh{max-width:46em}
.eyebrow{
  display:inline-block;font-family:"Courier New",monospace;font-size:10px;letter-spacing:.28em;
  color:var(--gold);background:transparent;border:1px solid rgba(228,190,127,.35);border-radius:2px;padding:4px 11px;margin-bottom:13px;
}
.sh h2{font-size:clamp(26px,3.3vw,34px);color:var(--paper);letter-spacing:.01em}
.sh h2::after{width:42px;height:2px;background:var(--gold);margin-top:11px}
.sh p{font-size:13.8px;color:var(--gray);line-height:1.85}

/* features 星图六则 */
.tiles{
  grid-template-columns:repeat(3,1fr);gap:0;margin-top:8px;
  border-top:1px solid rgba(228,190,127,.32);
}
.tile{
  position:relative;background:transparent;border:0;border-bottom:1px solid rgba(255,255,255,.09);
  border-left:1px solid rgba(255,255,255,.07);border-radius:0;box-shadow:none;
  padding:30px 26px 28px;
}
.tile:nth-child(3n+1){border-left:0}
.tile:hover{transform:none;box-shadow:none;border-color:rgba(255,255,255,.07)}
.tile::before{
  content:attr(data-n);position:absolute;right:16px;top:6px;
  font-family:"Courier New",monospace;font-size:52px;font-weight:700;line-height:1;
  color:rgba(228,190,127,.11);
}
.ti{
  display:grid;place-items:center;width:36px;height:36px;border-radius:50%;
  background:transparent;border:1px solid rgba(228,190,127,.5);color:var(--gold);margin-bottom:13px;
}
.ti svg{width:17px;height:17px}
.tile h4{color:var(--paper);font-size:16.5px;letter-spacing:.02em}
.tile p{color:var(--gray);font-size:13.3px;line-height:1.85}

/* screens 档案式 */
.cols{display:grid;grid-template-columns:1.02fr .98fr;gap:24px;align-items:start}
.col{position:relative;background:transparent;border:0;border-radius:0;box-shadow:none;padding:0}
.col:first-child{border:1px solid rgba(228,190,127,.28);padding:11px;background:rgba(255,255,255,.02)}
.col:first-child::before{
  content:"DREAM FILE / 01";position:absolute;left:24px;top:-10px;
  font-family:"Courier New",monospace;font-size:10px;letter-spacing:.22em;color:var(--gold);
  background:var(--night2);padding:0 8px;
}
.col img{width:100%;height:560px;object-fit:cover;object-position:top center;border-radius:0}
.col.lift{margin-top:0;border:1px solid rgba(255,255,255,.1);box-shadow:none;padding:11px;background:rgba(255,255,255,.02)}
.col.lift::before{
  content:"SCENE / 02";position:absolute;left:24px;top:-10px;
  font-family:"Courier New",monospace;font-size:10px;letter-spacing:.22em;color:var(--gray);
  background:var(--night2);padding:0 8px;
}
.col.lift img{height:456px;object-position:center}
.col figcaption{font-size:12.6px;color:var(--gray);margin-top:13px;padding:12px 2px 0;border-top:1px solid rgba(255,255,255,.09);line-height:1.85}
.col figcaption b{display:block;color:var(--gold);font-size:13.5px;margin-bottom:3px;letter-spacing:.04em}

/* guide 折线五幕 */
.steps{
  list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:14px;position:relative;
  padding-left:0;border-left:0;margin-top:14px;
}
.steps::before{
  content:"";position:absolute;left:0;right:0;top:21px;height:1px;
  background:linear-gradient(90deg,rgba(228,190,127,0),rgba(228,190,127,.45),rgba(228,190,127,0));
}
.steps li{
  display:block;background:transparent;border:0;border-radius:0;padding:0 4px;position:relative;
}
.steps li::before{display:none}
.steps li:nth-child(even){margin-top:52px}
.steps b{
  width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
  background:var(--night);border:1px solid rgba(228,190,127,.55);color:var(--gold);
  font-family:"Courier New",monospace;font-size:12px;font-weight:700;margin-bottom:14px;
}
.steps strong{display:block;font-size:14.5px;color:var(--paper);margin-bottom:4px}
.steps span{display:block;font-size:12.7px;color:var(--gray);line-height:1.8}
.gnote{margin-top:30px;background:rgba(255,255,255,.02);border-left:2px solid var(--gold);border-radius:0;color:#C3CDDF;font-size:12.8px;padding:13px 17px}

/* faq 单列梦问 */
.qa{display:grid;grid-template-columns:1fr;gap:0;max-width:880px;margin:14px auto 0;border-top:1px solid rgba(228,190,127,.3);counter-reset:qq}
.q{
  display:grid;grid-template-columns:52px 1fr;gap:8px;align-items:start;
  background:transparent;border:0;border-bottom:1px solid rgba(255,255,255,.09);border-radius:0;padding:20px 2px;
}
.q::before{counter-increment:qq;content:"Q" counter(qq,decimal-leading-zero);font-family:"Courier New",monospace;font-size:11.5px;letter-spacing:.12em;color:var(--gold2);padding-top:4px}
.q h3{font-size:16px;color:var(--paper);display:block;grid-column:2}
.q h3::before{display:none}
.q p{grid-column:2;font-size:13.3px;color:var(--gray);margin-top:6px;padding-left:0;line-height:1.85}

/* reviews */
.bubbles{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:10px}
.bub{
  position:relative;background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.09);
  border-top:1px solid rgba(228,190,127,.4);border-radius:0;padding:24px 24px 18px;box-shadow:none;
}
.bub:first-child{grid-column:1/-1;padding:28px 30px 22px}
.bub blockquote{font-size:14px;color:#CFD8E8;line-height:1.9}
.bub:first-child blockquote{font-size:17px;color:#E6ECF6;max-width:44em}
.who{display:flex;align-items:center;gap:8px;margin-top:14px;padding-top:10px;border-top:1px dashed rgba(255,255,255,.12);font-size:11.5px;color:var(--gray)}
.who i{font-style:normal;width:25px;height:25px;border-radius:50%;display:grid;place-items:center;background:transparent;border:1px solid rgba(228,190,127,.5);color:var(--gold);font-size:11.5px;font-weight:700}

/* get */
.get{
  position:relative;overflow:hidden;text-align:center;padding:78px 0 84px;color:var(--paper);
  background:
    radial-gradient(640px 340px at 50% 12%,rgba(228,190,127,.16),transparent 66%),
    linear-gradient(180deg,#101A30 0%,#0A1120 100%);
}
.get::after{
  content:"DREAM";position:absolute;left:50%;top:52%;transform:translate(-50%,-50%);
  font-family:"Courier New",monospace;font-size:clamp(140px,22vw,260px);letter-spacing:.08em;
  color:transparent;-webkit-text-stroke:1px rgba(228,190,127,.08);pointer-events:none;
}
.get-in{position:relative;z-index:1;justify-items:center;gap:13px}
.get img{border-radius:50%;background:transparent;padding:0;box-shadow:0 0 0 1px rgba(228,190,127,.4),0 0 30px rgba(228,190,127,.18)}
.get h2{color:var(--paper);font-size:clamp(26px,3.6vw,36px)}
.get h2 em{color:var(--gold);font-style:normal}
.get p{color:#A9B5CB;max-width:40em;font-size:14px;line-height:1.9}
.chips span{background:transparent;border:1px solid rgba(255,255,255,.2);color:#C6D0E2;border-radius:2px;font-size:11.5px}
.get .btn{background:var(--gold);color:#121926;box-shadow:none}
.get .btn:hover{background:#F0CF95}

/* footer */
.ft{background:var(--night2);border-top:1px solid rgba(255,255,255,.08);color:var(--gray);padding:44px 0 30px}
.ft-l{color:var(--paper);letter-spacing:.08em}
.ft-l img{border-radius:10px}
.ft p{color:var(--gray)}
.ft-nav{border-color:rgba(255,255,255,.1)}
.ft-nav a{color:#C6D0E2}
.ft-nav a:hover{color:var(--gold)}
.ft-c{color:#6E7A93}
.backtop{background:var(--gold);color:#121926;border-radius:2px;box-shadow:none}

@media (max-width:960px){
  .hero{padding:52px 0 10px}
  .tiles{grid-template-columns:1fr 1fr}
  .tile:nth-child(3n+1){border-left:1px solid rgba(255,255,255,.07)}
  .tile:nth-child(2n+1){border-left:0}
  .cols{grid-template-columns:1fr;gap:34px}
  .col img{height:480px}
  .col.lift img{height:400px}
  .steps{grid-template-columns:1fr 1fr 1fr;row-gap:34px}
  .steps::before{display:none}
  .steps li:nth-child(even){margin-top:0}
  .steps li{border-left:1px solid rgba(255,255,255,.1);padding-left:16px}
  .steps li:nth-child(3n+1){border-left:0;padding-left:4px}
  .bubbles{grid-template-columns:1fr}
  .bub:first-child{grid-column:auto}
  .nav{background:var(--night2);border-bottom:1px solid rgba(255,255,255,.1)}
  .nav a{color:#AEB9CE}
  .get{padding:66px 0 72px}
}
@media (max-width:760px){
  .sec{padding:54px 0}
  h1{font-size:clamp(44px,13vw,64px)}
  .three{grid-template-columns:1fr;margin-top:36px}
  .three li{border-left:0;border-top:1px solid rgba(255,255,255,.08);padding:16px 0 4px}
  .three li:first-child{border-top:0}
  .facts li{min-width:calc(50% - 6px)}
  .tiles{grid-template-columns:1fr}
  .tile{border-left:0;padding:24px 14px}
  .col img{height:430px}
  .col.lift img{height:340px}
  .steps{grid-template-columns:1fr;row-gap:26px}
  .steps li{border-left:0;padding-left:0;display:grid;grid-template-columns:52px 1fr;gap:0 12px;align-items:start}
  .steps b{grid-row:1/3;margin-bottom:0}
  .steps strong{margin-top:2px}
  .q{grid-template-columns:44px 1fr}
  .desc{text-align:left}
  .get{padding:58px 0 64px}
  .get::after{font-size:130px}
}

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