/* 异次元 - 二次元漫画与番剧 */
:root{
  --violet:#0E7C6B;
  --violet-2:#0A6659;
  --violet-soft:#F1F6F5;
  --violet-pale:#EEF2F8;
  --lime:#10141F;
  --ink:#10141F;
  --gray:#5B6478;
  --line:#D8DFEA;
  --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:#465063;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:#23D6BE}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(108deg,#EEF2F8 0%,#EEF2F8 58%,#0E7C6B 58%,#0A6659 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:#2A3242;margin:12px 0 14px}
.desc{font-size:15px;color:#465063;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:#D3E2EC;line-height:1.6;margin:4px 0 2px}
.strip-side p small{color:#9FB0C4;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:#B9C6D9}
.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:#465063}

/* 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 #B9C6D9;
}
.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:#2A3242}
.gnote{
  margin-top:18px;font-size:13px;color:#2A3242;
  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:#465063;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:#2A3242;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%,#085A4F 72%,#37A99A 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:#C3D2E4;max-width:40em}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:4px 0 8px}
.chips span{
  font-size:12px;color:#D3E2EC;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:#23D6BE}

/* footer */
.ft{background:#F1F6F5;color:#465063;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 #DCE4EE;border-bottom:1px solid #DCE4EE}
.ft-nav a:hover{color:var(--violet-2)}
.ft-c{color:#7C8798;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,#EEF2F8 0%,#F6F8FB 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}

/* rochat - 冷雾蓝白 · 青绿 · 社区广场版式 */
:root{
  --bg:#EEF2F8;
  --white:#FFFFFF;
  --ink:#10141F;
  --ink2:#2A3242;
  --teal:#0E7C6B;
  --teal2:#0A6659;
  --mint:#BFE9E2;
  --mint2:#E6F4F1;
  --gray:#5B6478;
  --line:#D8DFEA;
}
body{background:var(--bg);color:var(--ink)}

/* header */
.hd{background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);box-shadow:none}
.hd-brand img{border-radius:11px}
.hd-brand b{color:var(--ink);letter-spacing:.02em}
.hd-brand small{color:var(--gray);letter-spacing:.12em}
.nav a{color:var(--gray);border-radius:8px}
.nav a:hover{background:var(--mint2);color:var(--teal2)}
.cta{background:var(--ink);color:#fff;border-radius:8px;box-shadow:0 6px 16px rgba(16,20,31,.16)}
.cta:hover{background:var(--teal);color:#fff;transform:none}

/* hero */
.hero{
  position:relative;overflow:hidden;padding:66px 0 46px;background:
    radial-gradient(720px 420px at 6% -8%,rgba(14,124,107,.13),transparent 66%),
    radial-gradient(560px 380px at 96% 10%,rgba(191,233,226,.5),transparent 70%),
    var(--bg);
}
.hero-in{display:grid;grid-template-columns:1.06fr .94fr;gap:44px;align-items:center}
.hero-copy{max-width:600px}
.kick{
  display:inline-flex;align-items:center;gap:8px;font-family:"Courier New",monospace;font-size:10px;letter-spacing:.26em;
  color:var(--teal2);background:var(--white);border:1px solid var(--line);border-radius:999px;padding:6px 13px;margin-bottom:18px;
}
.kick::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
h1{font-size:clamp(42px,5.4vw,66px);line-height:1.08;letter-spacing:-.01em;font-weight:800;color:var(--ink);text-align:left}
h1 span{color:var(--teal);position:relative}
h1 span::after{display:none}
.lead{font-size:17px;color:var(--ink2);font-weight:600;margin:16px 0 10px}
.desc{color:var(--gray);font-size:14.4px;line-height:1.95;max-width:39em}
.acts{display:flex;gap:12px;margin:24px 0 20px;flex-wrap:wrap}
.btn{background:var(--ink);color:#fff;border-radius:8px;box-shadow:none}
.btn:hover{background:var(--teal);transform:none}
.ghost{color:var(--teal2);border-bottom:1px dashed rgba(14,124,107,.5)}
.ghost:hover{color:var(--teal)}
.facts{display:flex;gap:8px;flex-wrap:wrap}
.facts li{display:flex;align-items:center;gap:7px;background:var(--white);border:1px solid var(--line);border-radius:999px;padding:7px 13px;min-width:0}
.facts li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--teal)}
.facts b{color:var(--ink);font-size:12.5px;font-weight:700}
.facts span{color:var(--gray);font-size:11.5px}

/* hero right card */
.hero-card{position:relative;justify-self:end;width:100%;max-width:392px;transform:rotate(-3deg)}
.hero-card::before{
  content:"社区广场";position:absolute;left:-14px;top:-14px;z-index:2;
  background:var(--teal);color:#fff;font-size:11.5px;letter-spacing:.08em;padding:6px 13px;border-radius:999px;
  box-shadow:0 6px 14px rgba(14,124,107,.28);
}
.hero-card .frame{
  background:var(--white);border:1px solid rgba(16,20,31,.14);border-radius:16px;padding:10px;
  box-shadow:16px 16px 0 var(--mint);
}
.hero-card img{width:100%;height:474px;object-fit:cover;object-position:top center;border-radius:10px;display:block}
.hero-card .tag{
  position:absolute;right:-10px;bottom:-14px;background:var(--white);border:1px solid var(--line);border-radius:10px;
  padding:9px 13px;font-size:11.5px;color:var(--ink2);box-shadow:0 10px 24px rgba(16,20,31,.1);
}
.hero-card .tag b{color:var(--teal2);display:block;font-size:12.5px}

/* sections */
.sec{background:var(--white);padding:76px 0}
.sec.violet{background:#F1F6F5;border-top:1px solid #E1EAE7;border-bottom:1px solid #E1EAE7}
.sh{max-width:44em}
.eyebrow{
  display:inline-block;font-family:"Courier New",monospace;font-size:10px;letter-spacing:.26em;
  color:var(--teal2);background:var(--mint2);border-radius:999px;padding:5px 12px;margin-bottom:12px;
}
.sh h2{font-size:clamp(26px,3.2vw,34px);color:var(--ink);letter-spacing:-.01em}
.sh h2::after{width:44px;height:3px;background:var(--teal);border-radius:2px;margin-top:12px}
.sh p{font-size:13.8px;color:var(--gray);line-height:1.85}

/* features 错落三列 */
.tiles{grid-template-columns:repeat(3,1fr);gap:16px;margin-top:6px;align-items:start}
.tile{
  background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:none;
  padding:26px 22px 24px;position:relative;overflow:hidden;
}
.tile:nth-child(3n+2){margin-top:40px}
.tile:nth-child(3n){margin-top:18px}
.tile:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(16,20,31,.08);border-color:var(--mint)}
.tile::before{
  content:attr(data-n);position:absolute;right:12px;bottom:-8px;
  font-family:"Courier New",monospace;font-size:58px;font-weight:700;line-height:1;color:rgba(14,124,107,.09);
}
.ti{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--mint2);color:var(--teal2);margin-bottom:14px}
.ti svg{width:18px;height:18px}
.tile h4{font-size:16px;color:var(--ink);margin-bottom:6px}
.tile p{color:var(--gray);font-size:13.2px;line-height:1.85}

/* screens 横向卡片 */
.cols{display:flex;align-items:flex-end;gap:18px;margin-top:12px}
.col{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:none;flex:0 0 auto}
.col:first-child{width:34%}
.col.lift{width:40%;margin-top:0;padding:10px;border-color:var(--line);box-shadow:none}
.col img{width:100%;height:440px;object-fit:cover;object-position:top center;border-radius:9px;display:block}
.col.lift img{height:322px;object-position:center}
.col figcaption{font-size:12.4px;color:var(--gray);margin-top:10px;line-height:1.8}
.col figcaption b{display:block;color:var(--ink);font-size:13.2px;margin-bottom:3px}
.col-note{
  flex:1;align-self:stretch;border-radius:14px;background:var(--teal);color:#fff;padding:24px 22px;
  display:flex;flex-direction:column;justify-content:space-between;min-height:280px;
}
.col-note b{font-size:15px;letter-spacing:.02em}
.col-note p{font-size:12.6px;line-height:1.85;color:rgba(255,255,255,.82)}
.col-note span{font-family:"Courier New",monospace;font-size:10.5px;letter-spacing:.24em;color:rgba(255,255,255,.6)}

/* guide 药丸带 */
.steps{display:flex;align-items:flex-start;gap:10px;padding-left:0;border-left:0;margin-top:12px;flex-wrap:nowrap}
.steps li{
  display:block;flex:1;background:var(--white);border:1px solid var(--line);border-radius:12px;
  padding:16px 14px;position:relative;
}
.steps li::before{display:none}
.steps li:not(:last-child)::after{
  content:"→";position:absolute;right:-14px;top:26px;color:var(--teal);font-size:14px;z-index:2;
}
.steps b{
  display:inline-grid;place-items:center;width:30px;height:30px;border-radius:8px;
  background:var(--ink);color:#fff;font-family:"Courier New",monospace;font-size:11px;margin-bottom:10px;
}
.steps strong{display:block;font-size:13.8px;color:var(--ink);margin-bottom:4px}
.steps span{display:block;font-size:12.2px;color:var(--gray);line-height:1.75}
.gnote{margin-top:26px;background:var(--mint2);border-left:3px solid var(--teal);border-radius:0 8px 8px 0;color:#2F6E64;font-size:12.7px;padding:12px 16px}

/* faq 左题右问 */
.qa-wrap{display:grid;grid-template-columns:330px 1fr;gap:46px;align-items:start}
.qa-side{position:sticky;top:96px}
.qa-side .eyebrow{margin-bottom:12px}
.qa-side h2{font-size:clamp(25px,3vw,32px);color:var(--ink)}
.qa-side h2::after{width:44px;height:3px;background:var(--teal);border-radius:2px;margin-top:12px}
.qa-side p{font-size:13.6px;color:var(--gray);line-height:1.85;margin-top:12px}
.qa{display:block;margin:0;border-top:0;counter-reset:qq}
.q{
  display:grid;grid-template-columns:44px 1fr;gap:6px 10px;background:transparent;border:0;border-bottom:1px solid var(--line);
  border-radius:0;padding:18px 0;
}
.q:first-child{border-top:1px solid var(--line)}
.q::before{counter-increment:qq;content:"0" counter(qq);font-family:"Courier New",monospace;font-size:12px;color:var(--teal);letter-spacing:.06em;padding-top:4px}
.q h3{font-size:15.5px;color:var(--ink);display:block;grid-column:2}
.q h3::before{display:none}
.q p{grid-column:2;font-size:13.2px;color:var(--gray);margin-top:5px;padding-left:0;line-height:1.85}

/* reviews 左大右双 */
.bubbles{display:grid;grid-template-columns:1.08fr .92fr;gap:16px;margin-top:8px;align-items:stretch}
.bub{
  position:relative;background:var(--white);border:1px solid var(--line);border-radius:14px;padding:24px;
  box-shadow:none;border-top:3px solid var(--teal);
}
.bub:first-child{grid-row:1/3;display:flex;flex-direction:column;justify-content:space-between;padding:30px}
.bub blockquote{font-size:13.6px;color:var(--ink2);line-height:1.9}
.bub:first-child blockquote{font-size:17.5px;line-height:1.85;color:var(--ink)}
.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:8px;display:grid;place-items:center;background:var(--mint2);color:var(--teal2);font-size:11.5px;font-weight:700}

/* get */
.get{
  position:relative;overflow:hidden;padding:76px 0 84px;text-align:center;
  background:linear-gradient(120deg,#0E7C6B 0%,#0A6659 55%,#123B47 100%);color:#fff;
}
.get::after{
  content:"R";position:absolute;right:2%;bottom:-70px;font-family:Georgia,serif;font-weight:700;
  font-size:clamp(220px,32vw,380px);line-height:1;color:rgba(255,255,255,.06);pointer-events:none;
}
.get-in{position:relative;z-index:1;justify-items:center;gap:0}
.get-card{
  background:rgba(255,255,255,.06);border:1px dashed rgba(255,255,255,.4);border-radius:18px;
  padding:30px 34px;max-width:620px;margin:0 auto;display:grid;justify-items:center;gap:12px;
}
.get img{border-radius:14px;background:transparent;padding:0;box-shadow:0 0 0 1px rgba(255,255,255,.3)}
.get h2{color:#fff;font-size:clamp(25px,3.4vw,34px)}
.get h2 em{font-style:normal;color:#BFF3EA}
.get p{color:rgba(255,255,255,.82);max-width:36em;font-size:13.6px;line-height:1.9}
.chips span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.24);color:#EAF6F4;border-radius:999px;font-size:11.5px}
.get .btn{background:#fff;color:var(--ink);box-shadow:none}
.get .btn:hover{background:#EAF6F4}
.get small{color:rgba(255,255,255,.6);font-size:11.5px}

/* footer */
.ft{background:#0F1A24;border-top:0;color:#93A3B2;padding:44px 0 30px}
.ft-l{color:#fff}
.ft-l img{border-radius:9px}
.ft p{color:#93A3B2}
.ft-nav{border-color:rgba(255,255,255,.12)}
.ft-nav a{color:#C9D6DF}
.ft-nav a:hover{color:#BFF3EA}
.ft-c{color:#6C7B8A}
.backtop{background:#fff;color:var(--ink);border-radius:10px;box-shadow:0 8px 20px rgba(16,20,31,.18)}

@media (max-width:960px){
  .hero{padding:52px 0 38px}
  .hero-in{grid-template-columns:1fr;gap:38px}
  .hero-card{max-width:440px;justify-self:start;transform:rotate(-2deg)}
  .hero-card img{height:420px}
  .tiles{grid-template-columns:1fr 1fr}
  .tile:nth-child(3n+2),.tile:nth-child(3n){margin-top:0}
  .tile:nth-child(2n){margin-top:34px}
  .cols{flex-wrap:wrap}
  .col:first-child{width:44%}
  .col.lift{width:52%}
  .col-note{flex:1 0 100%;min-height:0;flex-direction:row;align-items:center;gap:18px}
  .steps{flex-wrap:wrap}
  .steps li{flex:1 0 44%}
  .steps li:not(:last-child)::after{display:none}
  .qa-wrap{grid-template-columns:1fr;gap:26px}
  .qa-side{position:static}
  .bubbles{grid-template-columns:1fr}
  .bub:first-child{grid-row:auto}
  .nav{background:#fff;border-bottom:1px solid var(--line)}
  .nav a{color:var(--gray)}
}
@media (max-width:760px){
  .sec{padding:54px 0}
  h1{font-size:clamp(40px,12vw,56px)}
  .hero-card{max-width:100%}
  .hero-card::before{left:0;top:-13px}
  .hero-card img{height:380px}
  .facts li{padding:6px 10px}
  .tiles{grid-template-columns:1fr}
  .tile:nth-child(2n){margin-top:0}
  .col:first-child,.col.lift{width:100%}
  .col img{height:400px}
  .col.lift img{height:300px}
  .col-note{flex-direction:column;align-items:flex-start;min-height:0}
  .steps{display:grid;grid-template-columns:1fr;gap:10px}
  .steps li{width:100%}
  .q{grid-template-columns:38px 1fr}
  .get{padding:60px 0 68px}
  .get-card{padding:24px 20px}
  .get::after{font-size:200px;right:-6%}
}

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