/* 异次元 - 二次元漫画与番剧 */
:root{
  --violet:#1E2A32;
  --violet-2:#2C3D45;
  --violet-soft:#FBEEE4;
  --violet-pale:#FFF9F1;
  --lime:#D9553F;
  --ink:#20232A;
  --gray:#7C7F86;
  --line:#EEDCCD;
  --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:#7C7F86;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:#E8705B}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(108deg,#FFF9F1 0%,#FFF9F1 58%,#1E2A32 58%,#B8432F 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:#354249;margin:12px 0 14px}
.desc{font-size:15px;color:#7C7F86;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:#F6E9DE;line-height:1.6;margin:4px 0 2px}
.strip-side p small{color:#D9C3B4;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:#EBD6C8}
.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:#7C7F86}

/* 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 #EBD6C8;
}
.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:#354249}
.gnote{
  margin-top:18px;font-size:13px;color:#354249;
  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:#7C7F86;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:#354249;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%,#2C3D45 72%,#C0503B 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:#F1E0D3;max-width:40em}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:4px 0 8px}
.chips span{
  font-size:12px;color:#F6E9DE;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:#E8705B}

/* footer */
.ft{background:#FBEEE4;color:#7C7F86;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 #E5D2C4;border-bottom:1px solid #E5D2C4}
.ft-nav a:hover{color:var(--violet-2)}
.ft-c{color:#8C8A90;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,#FFF9F1 0%,#FFFBF5 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}

/* 鲸岛AI - 奶油橘 · 居中hero · 岛屿明信片 · 中轴五步 */
:root{
  --cream:#FFF9F1;
  --peach:#FBEEE4;
  --coral:#D9553F;
  --coral2:#B8432F;
  --deep:#1E2A32;
  --ink:#20232A;
  --ink2:#33424A;
  --muted:#7C7F86;
  --line:#EEDCCD;
  --amber:#E8A33D;
}
body{background:var(--cream);color:var(--ink)}

/* header */
.hd{background:rgba(255,249,241,.95);border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(217,85,63,.1)}
.hd-brand img{border-radius:50%;box-shadow:0 0 0 1px var(--line),0 6px 14px rgba(217,85,63,.14)}
.hd-brand b{color:var(--ink);letter-spacing:.01em}
.hd-brand small{color:var(--muted);letter-spacing:.1em}
.nav a{color:var(--ink2);font-weight:600;border-radius:0;padding:7px 10px;position:relative}
.nav a::after{content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;background:var(--coral);transform:scaleX(0);transform-origin:left;transition:.2s}
.nav a:hover{background:transparent;color:var(--coral2)}
.nav a:hover::after{transform:scaleX(1)}
.cta{background:var(--coral);color:#fff;border-radius:999px;box-shadow:0 10px 20px rgba(217,85,63,.24)}
.cta:hover{background:var(--coral2);color:#fff;transform:translateY(-1px)}

/* hero：居中 · 明信片相框 */
.hero{
  position:relative;overflow:hidden;padding:62px 0 88px;text-align:center;
  background:
    radial-gradient(720px 420px at 50% -8%,#FCE3CF 0,transparent 68%),
    radial-gradient(520px 420px at 90% 46%,rgba(217,85,63,.09),transparent 72%),
    var(--cream);
}
.hero-in{display:block}
.kick{
  display:inline-block;font-size:11px;letter-spacing:.3em;color:var(--coral2);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 16px;margin-bottom:18px;
}
h1{font-size:clamp(56px,9vw,104px);font-weight:800;color:var(--ink);letter-spacing:-.03em;margin:4px 0 8px}
h1 em{
  font-style:normal;display:inline-block;background:var(--coral);color:#fff;border-radius:18px;
  padding:0 .13em;transform:rotate(-2deg);font-size:.9em;line-height:.96;box-shadow:6px 8px 0 rgba(30,42,50,.08);
}
.lead{font-size:21px;font-weight:700;color:var(--ink2);margin:12px 0 14px;letter-spacing:.01em}
.desc{font-size:15px;color:var(--muted);max-width:44em;margin:0 auto;line-height:1.95}
.acts{justify-content:center;margin:28px 0 22px}
.btn{background:var(--deep);color:#fff;border-radius:999px;padding:14px 30px;box-shadow:0 14px 26px rgba(30,42,50,.18)}
.btn:hover{background:#2C3D45;transform:translateY(-1px)}
.ghost{color:var(--coral2);border-bottom:1.5px dashed rgba(217,85,63,.55);font-weight:700}
.facts{justify-content:center;gap:0;border-top:1px solid var(--line);padding-top:16px;max-width:560px;margin:0 auto;flex-wrap:nowrap}
.facts li{padding:0 22px;border:0;background:transparent;border-left:1px solid var(--line);border-radius:0;min-width:0;text-align:left}
.facts li:first-child{padding-left:0;border-left:0}
.facts b{color:var(--ink);font-size:13.5px;display:block}
.facts span{color:var(--muted);font-size:11.5px;display:block;margin-top:2px}
.stage{position:relative;max-width:640px;margin:46px auto 0}
.halo{
  position:absolute;left:50%;top:50%;width:560px;height:560px;margin:-280px 0 0 -280px;border-radius:50%;
  background:radial-gradient(circle,rgba(217,85,63,.15),transparent 66%);
}
.stage::before{
  content:"";position:absolute;inset:18px -14px -14px 18px;border:2px solid rgba(217,85,63,.5);
  border-radius:26px;transform:rotate(1.6deg);
}
.isle{
  position:relative;z-index:1;margin:0;border:8px solid #fff;border-radius:22px;overflow:hidden;
  box-shadow:0 30px 60px rgba(90,60,45,.18);transform:rotate(-1.4deg);
}
.isle img{width:100%;height:430px;object-fit:cover;object-position:center 55%}
.tag{
  position:absolute;z-index:2;background:#fff;border:1px solid var(--line);border-radius:999px;
  font-size:11.5px;font-weight:700;color:var(--ink2);padding:8px 15px;
  box-shadow:0 12px 24px rgba(90,60,45,.14);
}
.ta{left:-14px;top:44px}
.tb{right:-10px;bottom:58px}

/* sections */
.sec{background:var(--cream);padding:78px 0}
.scrsec{background:var(--peach)}
.sh{max-width:44em}
.eyebrow{
  display:inline-block;background:transparent;border:1px solid var(--coral);color:var(--coral2);
  border-radius:999px;padding:4px 12px;font-size:10.5px;letter-spacing:.22em;font-weight:800;margin-bottom:12px;
}
.sh h2{font-size:clamp(26px,3.4vw,34px);color:var(--ink);letter-spacing:-.01em}
.sh h2::after{width:46px;height:3px;background:var(--coral);border-radius:3px;margin-top:11px}
.sh p{color:var(--muted);font-size:14px;line-height:1.85}

/* features：双列大编号 */
.fwrap{display:grid;grid-template-columns:1fr 1fr;gap:0 44px;border-top:1px solid var(--line)}
.frow{display:grid;grid-template-columns:64px 1fr;gap:14px;padding:26px 0 24px;border-bottom:1px dashed var(--line);align-items:start}
.fn{
  font-family:Georgia,"Times New Roman",serif;font-size:36px;line-height:.9;
  color:transparent;-webkit-text-stroke:1px rgba(217,85,63,.7);
}
.fc h4{font-size:17px;color:var(--ink)}
.fc p{font-size:13.6px;color:var(--muted);margin-top:7px;line-height:1.85}

/* screens：错落双卡 */
.scr{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
.scard{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;
  box-shadow:0 18px 36px rgba(90,60,45,.08);
}
.scard:nth-child(2){margin-top:38px}
.scard figure{margin:0;border-radius:11px;overflow:hidden;background:var(--peach)}
.scard img{width:100%;height:400px;object-fit:cover;object-position:top center}
.sno{
  display:inline-block;margin:2px 0 10px 2px;background:var(--coral);color:#fff;
  font-size:10.5px;font-weight:800;letter-spacing:.1em;border-radius:999px;padding:5px 11px;
}
.scap{padding:16px 6px 8px;border-top:1px dashed var(--line);margin-top:12px}
.scap b{display:block;font-size:16.5px;color:var(--ink)}
.scap p{font-size:13.4px;color:var(--muted);margin-top:6px;line-height:1.85}

/* guide：中轴麻将式五步 */
.path{list-style:none;max-width:880px;margin:0 auto;padding:8px 0 0;position:relative}
.path::before{
  content:"";position:absolute;left:50%;top:24px;bottom:24px;width:1px;
  background:repeating-linear-gradient(180deg,rgba(217,85,63,.5) 0 6px,transparent 6px 13px);
}
.path li{position:relative;display:grid;grid-template-columns:1fr 54px 1fr;align-items:center;margin-bottom:16px}
.pn{
  grid-column:2;width:38px;height:38px;border-radius:50%;background:#fff;border:1px solid var(--line);
  color:var(--coral2);font-family:Georgia,serif;font-size:13px;display:grid;place-items:center;
  margin:0 auto;position:relative;z-index:1;box-shadow:0 8px 16px rgba(90,60,45,.08);
}
.pc{
  grid-column:1;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 20px;
  text-align:right;box-shadow:0 12px 26px rgba(90,60,45,.05);
}
.path li:nth-child(even) .pc{grid-column:3;text-align:left}
.pc b{display:block;font-size:15.5px;color:var(--ink)}
.pc span{display:block;font-size:13px;color:var(--muted);line-height:1.8;margin-top:5px}
.gnote{
  margin:30px auto 0;max-width:880px;background:var(--peach);border-left:3px solid var(--coral);
  color:var(--ink2);padding:14px 20px;border-radius:0 10px 10px 0;font-size:13px;
}

/* faq：单列编号行 */
.flist{max-width:880px;margin:0 auto;border-top:1px solid var(--line)}
.fq{display:grid;grid-template-columns:52px 1fr;gap:16px;padding:22px 2px;border-bottom:1px solid var(--line);align-items:start}
.fqn{
  width:30px;height:30px;display:grid;place-items:center;background:var(--deep);color:#fff;
  border-radius:9px;font-size:11.5px;font-weight:800;margin-top:2px;
}
.fq h3{font-size:16px;color:var(--ink);display:block}
.fq p{font-size:13.4px;color:var(--muted);margin-top:7px;line-height:1.85}

/* reviews：左引号横排 */
.sec.band{background:var(--peach)}
.quotes{max-width:900px;margin:0 auto}
.qq{display:grid;grid-template-columns:46px 1fr;gap:18px;padding:24px 0;border-bottom:1px dashed rgba(217,85,63,.32);align-items:start}
.qq:last-child{border-bottom:0;padding-bottom:0}
.qm{font-family:Georgia,serif;font-size:46px;line-height:.8;color:rgba(217,85,63,.38)}
.qq blockquote{font-size:14.5px;color:var(--ink2);line-height:1.9}
.who{display:flex;align-items:center;gap:8px;margin-top:10px;padding:0;border:0;font-size:11.5px;color:var(--muted)}
.who i{width:24px;height:24px;border-radius:50%;background:var(--coral);color:#fff;font-size:11px;display:grid;place-items:center;font-style:normal;font-weight:700}

/* get：明信片下载卡 */
.get{position:relative;background:var(--cream);padding:88px 0}
.dlcard{
  position:relative;max-width:760px;margin:0 auto;background:#fff;border:2px solid var(--ink);
  border-radius:26px;padding:52px 34px 40px;text-align:center;box-shadow:14px 14px 0 rgba(217,85,63,.22);
}
.rib{
  position:absolute;left:50%;top:-14px;transform:translateX(-50%) rotate(-2deg);background:var(--coral);
  color:#fff;font-size:10.5px;font-weight:800;letter-spacing:.28em;padding:7px 16px;border-radius:999px;
}
.dlcard img{margin:0 auto 14px;border-radius:50%}
.get h2{font-size:clamp(26px,3.6vw,36px);color:var(--ink)}
.get h2 em{font-style:normal;color:var(--coral)}
.dlcard p{font-size:14.5px;color:var(--muted);line-height:1.9;margin:12px auto 0;max-width:36em}
.chips{justify-content:center;gap:8px;margin:22px 0 24px}
.chips span{background:var(--peach);border:1px solid var(--line);color:var(--ink2);font-size:12px;border-radius:999px;padding:6px 14px}
.get .btn{background:var(--coral);box-shadow:0 14px 28px rgba(217,85,63,.28)}
.get .btn:hover{background:var(--coral2)}
.dlcard small{display:block;margin-top:14px;font-size:11.5px;color:var(--muted)}

/* footer */
.ft{background:#fff;color:var(--muted);border-top:1px solid var(--line);padding:44px 0 30px}
.ft-l{color:var(--ink)}
.ft-l img{border-radius:50%}
.ft-nav{border-color:var(--line)}
.ft-nav a{color:var(--ink2);font-weight:600}
.ft-c{color:#9A9A9A}
.backtop{background:var(--coral);color:#fff;border-radius:50%}

@media (max-width:960px){
  .hero{
    padding:48px 0 66px;
    background:radial-gradient(560px 380px at 50% 0,#FCE3CF,transparent 70%),var(--cream);
  }
  .stage{max-width:560px}
  .isle img{height:380px}
  .fwrap{grid-template-columns:1fr 1fr;gap:0 30px}
  .scr{grid-template-columns:1fr 1fr;gap:18px}
  .scard img{height:330px}
  .path{max-width:100%}
  .nav{background:var(--cream)}
  .nav a{color:var(--ink2)}
  .nav a::after{display:none}
}
@media (max-width:760px){
  .sec{padding:54px 0}
  .fwrap{grid-template-columns:1fr}
  .frow{grid-template-columns:52px 1fr;padding:22px 0 20px}
  .fn{font-size:30px}
  .scr{grid-template-columns:1fr}
  .scard:nth-child(2){margin-top:0}
  .scard img{height:360px}
  .path::before{left:19px}
  .path li{display:block;padding-left:56px;margin-bottom:12px}
  .pn{position:absolute;left:0;top:16px;margin:0}
  .pc{grid-column:1!important;text-align:left!important}
  .facts{display:grid;grid-template-columns:1fr 1fr;gap:10px;border-top:0;padding-top:0;max-width:100%}
  .facts li{border-left:0;padding:0;min-width:0}
  .facts li:last-child{grid-column:1/-1}
  .fq{grid-template-columns:44px 1fr;gap:12px}
  .qq{grid-template-columns:30px 1fr;gap:12px}
  .qm{font-size:34px}
  .dlcard{padding:44px 20px 32px;box-shadow:8px 8px 0 rgba(217,85,63,.2)}
  .get{padding:64px 0}
  .stage{margin-top:34px}
  .stage::before{inset:12px -8px -10px 12px}
  .tag{font-size:10.5px;padding:6px 11px}
  .ta{left:-4px}
  .tb{right:-2px;bottom:38px}
  .isle{transform:none}
  .isle img{height:320px}
  .hero .facts{max-width:420px;margin:0 auto}
}

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