/* 异次元 - 二次元漫画与番剧 */
:root{
  --violet:#C9F24D;
  --violet-2:#B4DB35;
  --violet-soft:#1E1C24;
  --violet-pale:#17161B;
  --lime:#17161B;
  --ink:#17161B;
  --gray:#A19DA8;
  --line:#34313C;
  --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:#B6B2BC;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:#D9FF7A}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(108deg,#17161B 0%,#17161B 58%,#C9F24D 58%,#B4DB35 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:#DED9CE;margin:12px 0 14px}
.desc{font-size:15px;color:#B6B2BC;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:#D8D3C9;line-height:1.6;margin:4px 0 2px}
.strip-side p small{color:#8E8A96;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:#3A3744}
.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:#B6B2BC}

/* 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 #3A3744;
}
.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:#DED9CE}
.gnote{
  margin-top:18px;font-size:13px;color:#DED9CE;
  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:#B6B2BC;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:#DED9CE;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%,#8FB020 72%,#C9F24D 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:#C4BFB4;max-width:40em}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:4px 0 8px}
.chips span{
  font-size:12px;color:#D8D3C9;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:#D9FF7A}

/* footer */
.ft{background:#1E1C24;color:#B6B2BC;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 #3A3744;border-bottom:1px solid #3A3744}
.ft-nav a:hover{color:var(--violet-2)}
.ft-c{color:#6F6B77;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,#17161B 0%,#221F29 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}

/* Linky - 炭黑 · 荧光黄绿 · 连接感版式 */
:root{
  --coal:#17161B;
  --coal2:#1E1C24;
  --bone:#F1EEE6;
  --ink:#17161B;
  --lime:#C9F24D;
  --lime2:#B4DB35;
  --muted:#A19DA8;
  --line:#34313C;
  --line2:#E0DACC;
}
body{background:var(--coal);color:var(--bone)}

/* header */
.hd{background:rgba(23,22,27,.94);border-bottom:1px solid var(--line);box-shadow:none}
.hd-brand img{border-radius:50%}
.hd-brand b{color:var(--bone);letter-spacing:.02em}
.hd-brand small{color:var(--muted);letter-spacing:.14em}
.nav a{color:var(--muted);border-radius:2px}
.nav a:hover{background:#26242D;color:var(--lime)}
.cta{background:var(--lime);color:var(--ink);border-radius:999px;box-shadow:none;font-weight:700}
.cta:hover{background:#D9FF7A;color:var(--ink);transform:none}

/* hero */
.hero{position:relative;overflow:hidden;padding:64px 0 56px;background:
  radial-gradient(620px 380px at 88% 8%,rgba(201,242,77,.10),transparent 68%),var(--coal)}
.hero-in{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center}
.hero-copy{max-width:590px}
.kick{
  display:inline-flex;align-items:center;gap:8px;font-family:"Courier New",monospace;font-size:10px;letter-spacing:.28em;
  color:var(--lime);border:1px solid #3C3A44;border-radius:999px;padding:6px 13px;margin-bottom:18px;
}
.kick::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime)}
h1{font-size:clamp(44px,6vw,74px);line-height:1.04;letter-spacing:-.02em;font-weight:800;color:var(--bone);text-align:left}
h1 span{color:var(--lime);position:relative}
h1 span::after{display:none}
h1 i{font-style:normal;color:var(--lime)}
.lead{font-size:17.5px;color:#DAD6DE;font-weight:600;margin:16px 0 10px}
.desc{color:var(--muted);font-size:14.4px;line-height:1.95;max-width:38em}
.acts{display:flex;gap:14px;margin:26px 0 22px;flex-wrap:wrap;align-items:center}
.btn{background:var(--lime);color:var(--ink);border-radius:999px;box-shadow:none;font-weight:700}
.btn:hover{background:#D9FF7A;transform:none}
.ghost{color:var(--bone);border-bottom:1px dashed #4A4753}
.ghost:hover{color:var(--lime)}
.facts{display:flex;gap:22px;flex-wrap:wrap}
.facts li{display:flex;align-items:baseline;gap:7px;background:transparent;border:0;padding:0;min-width:0}
.facts li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);flex:0 0 auto}
.facts b{color:var(--bone);font-size:12.8px}
.facts span{color:var(--muted);font-size:11.5px}

/* mosaic */
.mosaic{display:grid;grid-template-columns:1.18fr .82fr;grid-template-rows:172px 172px;gap:12px}
.mosaic .m1{grid-row:1/3;border-radius:16px;overflow:hidden;border:1px solid #2E2B35;background:#221F29}
.mosaic .m1 img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block}
.mosaic .m2{border-radius:16px;overflow:hidden;border:1px solid #2E2B35;background:#221F29}
.mosaic .m2 img{width:100%;height:100%;object-fit:cover;object-position:center;display:block}
.mosaic .m3{background:var(--lime);color:var(--ink);border-radius:16px;padding:16px 16px 14px;display:flex;flex-direction:column;justify-content:space-between}
.mosaic .m3 b{display:block;font-size:30px;line-height:1;font-family:"Courier New",monospace;letter-spacing:-.02em;margin-bottom:4px}
.mosaic .m3 span{font-size:11.5px;color:#3E4A14;line-height:1.6}
.mosaic .m3 em{font-style:normal;font-size:10.5px;letter-spacing:.22em;font-family:"Courier New",monospace;color:#54631C}

/* sections */
.sec{background:var(--coal);padding:74px 0}
.sec.bone{background:var(--bone);color:var(--ink);border-top:1px solid #E4DED1;border-bottom:1px solid #E4DED1}
.sh{max-width:44em}
.eyebrow{
  display:inline-block;font-family:"Courier New",monospace;font-size:10px;letter-spacing:.26em;
  color:var(--lime);border:1px solid #3C3A44;border-radius:999px;padding:5px 12px;margin-bottom:12px;
}
.sh h2{font-size:clamp(26px,3.2vw,34px);color:var(--bone);letter-spacing:-.01em}
.sh h2::after{width:40px;height:3px;background:var(--lime);border-radius:2px;margin-top:12px}
.sh p{font-size:13.8px;color:var(--muted);line-height:1.85}
.sec.bone .eyebrow{color:#5E6E1C;border-color:#CFC9B8;background:#E9E4D7}
.sec.bone .sh h2{color:var(--ink)}
.sec.bone .sh p{color:#6A665C}

/* features rows */
.rows{border-top:1px solid var(--line);margin-top:6px}
.row{
  display:grid;grid-template-columns:56px 220px 1fr 26px;gap:18px;align-items:start;
  padding:21px 6px;border-bottom:1px solid var(--line);
}
.row .no{font-family:"Courier New",monospace;font-size:12px;letter-spacing:.1em;color:var(--lime);padding-top:4px}
.row h4{font-size:17px;color:var(--bone);letter-spacing:.01em;padding-top:1px}
.row p{font-size:13.4px;color:var(--muted);line-height:1.85}
.row .ar{justify-self:end;color:#4A4753;padding-top:4px}
.row:hover{background:#1D1B24}
.row:hover .ar{color:var(--lime)}

/* screens overlap */
.stack{display:grid;grid-template-columns:1fr 360px;gap:44px;align-items:center;margin-top:10px}
.stage{position:relative;padding-bottom:54px}
.stage .big{width:100%;height:512px;object-fit:cover;object-position:top center;border-radius:18px;border:1px solid #DCD6C8;display:block}
.stage .small{position:absolute;right:-20px;bottom:0;width:47%;height:252px;object-fit:cover;object-position:center;border-radius:14px;border:7px solid var(--bone);box-shadow:0 20px 44px rgba(23,22,27,.2)}
.cap h4{font-size:18px;color:var(--ink);margin-bottom:8px}
.cap p{font-size:13.2px;color:#6A665C;line-height:1.9;margin-bottom:14px}
.cap ul{list-style:none;border-top:1px solid #DCD6C8}
.cap li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid #DCD6C8;font-size:12.6px;color:#4E4A41}
.cap li b{color:var(--ink);font-weight:700;font-size:12.6px;letter-spacing:.02em}
.cap li span{color:#7A7568}

/* guide 3+2 */
.gcards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px}
.gc{position:relative;background:var(--coal2);border:1px solid var(--line);border-radius:14px;padding:22px 20px 20px}
.gc .gn{position:absolute;right:16px;top:12px;font-family:"Courier New",monospace;font-size:11px;color:#55525E;letter-spacing:.1em}
.gc::before{content:"";position:absolute;left:20px;top:-1px;width:26px;height:2px;background:var(--lime)}
.gc strong{display:block;font-size:15.5px;color:var(--bone);margin-bottom:5px}
.gc span{display:block;font-size:12.6px;color:var(--muted);line-height:1.8}
.gnote{margin-top:24px;border-left:2px solid var(--lime);background:#1E1C24;color:#C9C5CE;font-size:12.7px;padding:12px 16px;border-radius:0 8px 8px 0}

/* faq bone */
.faqs{max-width:820px;margin:8px auto 0;display:grid;gap:10px;counter-reset:ff}
.f{
  display:grid;grid-template-columns:40px 1fr;gap:4px 14px;align-items:start;
  background:#FFFFFF;border:1px solid var(--line2);border-radius:12px;padding:17px 19px;
}
.f .qm{
  width:30px;height:30px;border-radius:9px;background:#EAF5C9;color:#4E6115;
  display:grid;place-items:center;font-family:"Courier New",monospace;font-size:13px;font-weight:700;
}
.f h3{font-size:15.5px;color:var(--ink);padding-top:3px}
.f h3::before{display:none}
.f p{grid-column:2;font-size:13.2px;color:#6A665C;line-height:1.85;margin-top:4px}

/* reviews dividers */
.words{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:8px}
.words .w{padding:2px 28px;border-left:1px solid var(--line)}
.words .w:first-child{border-left:0;padding-left:0}
.words .w:last-child{padding-right:0}
.words blockquote{font-size:13.8px;color:#D6D2DB;line-height:1.95}
.words .wm{font-family:Georgia,serif;font-size:44px;line-height:.6;color:var(--lime);display:block;margin-bottom:14px}
.words .who{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:11.5px;color:var(--muted)}
.words .who i{font-style:normal;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:#2A2732;color:var(--lime);font-size:11px;font-weight:700}

/* get */
.get{
  position:relative;overflow:hidden;padding:78px 0 92px;text-align:center;
  background:radial-gradient(560px 320px at 50% 8%,rgba(201,242,77,.14),transparent 66%),#111015;
}
.get::after{
  content:"LINKY";position:absolute;left:50%;bottom:-6px;transform:translateX(-50%);
  font-family:"Courier New",monospace;font-weight:700;font-size:clamp(120px,18vw,230px);letter-spacing:.02em;
  color:transparent;-webkit-text-stroke:1px rgba(201,242,77,.09);pointer-events:none;
}
.get-in{position:relative;z-index:1;justify-items:center;gap:12px}
.get img{border-radius:50%;background:transparent;padding:0;box-shadow:0 0 0 2px var(--lime)}
.get h2{color:var(--bone);font-size:clamp(26px,3.6vw,36px)}
.get h2 em{font-style:normal;color:var(--lime)}
.get p{color:var(--muted);max-width:38em;font-size:13.8px;line-height:1.9}
.chips span{background:transparent;border:1px solid #3C3A44;color:#CFCBD4;border-radius:999px;font-size:11.5px}
.get .btn{background:var(--lime);color:var(--ink)}
.get .btn:hover{background:#D9FF7A}
.get small{color:#6E6A76;font-size:11.5px}

/* footer */
.ft{background:#0F0E12;border-top:1px solid #232129;color:#8D8995;padding:44px 0 30px}
.ft-l{color:var(--bone)}
.ft-l img{border-radius:50%}
.ft p{color:#8D8995}
.ft-nav{border-color:#2A2732}
.ft-nav a{color:#C2BEC8}
.ft-nav a:hover{color:var(--lime)}
.ft-c{color:#6A6672}
.backtop{background:var(--lime);color:var(--ink);border-radius:50%;box-shadow:none}

@media (max-width:960px){
  .hero{padding:52px 0 42px}
  .hero-in{grid-template-columns:1fr;gap:36px}
  .mosaic{grid-template-rows:200px 200px;max-width:560px}
  .rows .row{grid-template-columns:48px 1fr 24px;gap:12px}
  .row p{grid-column:2/4}
  .stack{grid-template-columns:1fr;gap:30px}
  .stage{padding-bottom:44px}
  .stage .big{height:460px}
  .stage .small{right:-8px;height:210px}
  .gcards{grid-template-columns:1fr 1fr}
  .words{grid-template-columns:1fr}
  .words .w{border-left:0;border-top:1px solid var(--line);padding:20px 0}
  .words .w:first-child{padding-top:0;border-top:0}
  .nav{background:var(--coal2);border-bottom:1px solid var(--line)}
  .nav a{color:var(--muted)}
}
@media (max-width:760px){
  .sec{padding:54px 0}
  h1{font-size:clamp(40px,12vw,56px)}
  .mosaic{grid-template-columns:1fr 1fr;grid-template-rows:150px 150px;gap:10px}
  .mosaic .m1{grid-row:1/3}
  .mosaic .m3 b{font-size:26px}
  .row{grid-template-columns:40px 1fr;gap:6px 12px}
  .row .ar{display:none}
  .row p{grid-column:2}
  .row h4{font-size:16px}
  .stage .big{height:400px}
  .stage .small{height:170px;width:52%;right:-6px}
  .gcards{grid-template-columns:1fr}
  .f{grid-template-columns:36px 1fr;padding:15px}
  .get{padding:60px 0 72px}
  .get::after{font-size:110px;bottom:0}
}

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