/* roulang page: index */
:root{
  --grad:linear-gradient(135deg,#F2416B 0%,#FF7A4D 55%,#FFB05A 100%);
  --pink:#E8325D;--mint:#0FA98C;--dark:#2A1620;
  --bg:#FFF8F3;--soft:#FFF0E8;--white:#fff;
  --ink:#2B2024;--muted:#75636A;--line:#F1DCD3;
  --r-lg:28px;--r-md:20px;--r-sm:16px;
  --sh:0 16px 40px rgba(120,40,40,.08);
  --sh-h:0 24px 56px rgba(242,65,107,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
h1,h2,h3,p,ul,li,figure{margin:0;padding:0}
ul{list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--dark);outline-offset:3px;border-radius:4px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sec{padding:96px 0}
.sec.alt{background:var(--white)}

/* ---------- buttons / tags ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:700;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(242,65,107,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(242,65,107,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:#F5C7B6;color:var(--ink)}
.btn-ghost:hover{background:var(--soft)}
.tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--soft);color:var(--pink);font-size:13px;font-weight:700}
.tag::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--grad)}
.pill{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;background:var(--soft);font-size:12px;color:var(--muted);font-weight:600}
.pill::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--grad);flex:none}
.pill b{color:var(--ink);font-size:13px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--pink)}
.text-link:hover{gap:10px}

/* ---------- header ---------- */
.hd{position:sticky;top:0;z-index:60;padding:16px 0;background:rgba(255,248,243,.96);transition:padding .25s,box-shadow .25s}
.hd.scrolled{padding:8px 0;box-shadow:0 1px 0 var(--line);background:#FFF8F3}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.01em}
.logo svg{width:32px;height:32px;flex:none}
.nav-links{display:flex;align-items:center;gap:28px;font-size:15px;font-weight:600;color:var(--muted)}
.nav-links a{position:relative;padding:6px 0;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px;background:var(--grad);opacity:0;transform:scaleX(.4);transition:.2s}
.nav-links a:hover{color:var(--ink)}
.nav-links a.on{color:var(--ink)}
.nav-links a.on::after,.nav-links a:hover::after{opacity:1;transform:scaleX(1)}
.nav-act{display:flex;align-items:center;gap:18px}
.nav-act .ghost-link{font-size:15px;font-weight:600;color:var(--muted)}
.nav-act .ghost-link:hover{color:var(--pink)}
.burger{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:12px;border:1px solid var(--line);background:#fff}
.burger span{width:18px;height:2px;border-radius:2px;background:var(--ink)}
.mnav{display:none;background:#fff;border-top:1px solid var(--line);box-shadow:0 20px 40px rgba(120,40,40,.08)}
.mnav.open{display:block}
.mnav a{display:flex;align-items:center;min-height:48px;padding:0 24px;font-size:16px;font-weight:600;border-bottom:1px solid #F9EDE7}
.mnav .btn{margin:14px 24px 20px;height:48px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:56px 0 88px;background:
  radial-gradient(900px 460px at 88% -12%,#FFD9C2 0%,rgba(255,217,194,0) 65%),
  radial-gradient(680px 420px at 0% 6%,#FFE3E8 0%,rgba(255,227,232,0) 62%),
  linear-gradient(180deg,#FFF3EC 0%,#FFF8F3 72%)}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.7;background-image:
  radial-gradient(circle at 14% 24%,rgba(242,65,107,.12) 0 9px,transparent 10px),
  radial-gradient(circle at 82% 70%,rgba(255,122,77,.12) 0 7px,transparent 8px);
  background-size:360px 360px,440px 440px}
.hero-grid{position:relative;display:grid;grid-template-columns:1.28fr 1fr;gap:56px;align-items:center}
.hero-copy h1{font-size:clamp(34px,4.8vw,58px);font-weight:800;line-height:1.1;letter-spacing:-.02em;margin:18px 0 18px}
.hero-sub{font-size:17px;color:var(--muted);max-width:520px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.trust{display:flex;flex-wrap:wrap;gap:12px 26px;font-size:14px;color:var(--muted);font-weight:600}
.trust li{display:flex;align-items:center;gap:7px}
.trust li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--grad);flex:none}
.hero-preview{position:relative}
.preview-card{position:relative;padding:10px;border-radius:var(--r-lg);background:var(--grad);box-shadow:0 26px 60px rgba(242,65,107,.24)}
.preview-inner{position:relative;border-radius:22px;overflow:hidden;background:#141014;aspect-ratio:16/9}
.preview-inner img{width:100%;height:100%;object-fit:cover}
.play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:60px;height:60px;border-radius:50%;background:rgba(255,255,255,.94);box-shadow:0 10px 26px rgba(0,0,0,.22);display:flex;align-items:center;justify-content:center;transition:transform .2s}
.play::after{content:"";width:0;height:0;margin-left:4px;border-left:16px solid var(--pink);border-top:10px solid transparent;border-bottom:10px solid transparent}
.play:hover{transform:translate(-50%,-50%) scale(1.06)}
.bar{position:absolute;left:14px;right:14px;bottom:12px;height:5px;border-radius:99px;background:rgba(255,255,255,.34);overflow:hidden}
.bar span{display:block;width:62%;height:100%;border-radius:99px;background:var(--grad)}
.badge-float{position:absolute;display:flex;align-items:center;gap:8px;padding:8px 13px;border-radius:999px;background:#fff;box-shadow:0 12px 28px rgba(120,40,40,.14);font-size:12px;font-weight:600;color:var(--muted)}
.badge-float::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--grad);flex:none}
.badge-float b{color:var(--ink);font-size:14px}
.bf1{top:-14px;left:-14px}
.bf2{bottom:52px;right:-16px}
.device-mini{position:absolute;left:-20px;bottom:-22px;display:flex;align-items:center;gap:10px;padding:9px 14px;border-radius:14px;background:#fff;box-shadow:0 16px 34px rgba(120,40,40,.14);font-size:12px;font-weight:700}
.device-mini i{display:block;width:22px;height:30px;border-radius:6px;border:2px solid var(--pink)}

/* ---------- section head ---------- */
.shead{max-width:720px;margin-bottom:44px}
.shead.split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.shead h2{font-size:clamp(26px,3.2vw,40px);font-weight:800;line-height:1.22;margin:16px 0 12px;letter-spacing:-.01em}
.shead p{font-size:16px;color:var(--muted);max-width:640px}

/* ---------- pain ---------- */
.pain-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}
.pain-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:26px;box-shadow:var(--sh);transition:.25s}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.pain-card .ico{width:42px;height:42px;border-radius:12px;background:var(--soft);display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:14px}
.pain-card h3{font-size:19px;font-weight:700;margin-bottom:6px}
.pain-card p{font-size:14px;color:var(--muted)}
.pain-card.hot{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 22px 48px rgba(242,65,107,.28)}
.pain-card.hot .ico{background:rgba(255,255,255,.22);color:#fff}
.pain-card.hot p{color:rgba(255,255,255,.88)}

/* ---------- solution ---------- */
.solution{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.sol-left h2{font-size:clamp(26px,3.2vw,40px);font-weight:800;line-height:1.22;margin:16px 0 24px}
.sol-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--muted)}
.sol-list li::before{content:"";width:20px;height:20px;border-radius:50%;background:var(--grad);flex:none;margin-top:3px}
.sol-left .text-link{margin-top:26px}
.stack{position:relative;min-height:390px;padding:10px}
.stack-card{position:absolute;display:flex;align-items:center;gap:14px;width:min(340px,88%);padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--sh);transition:.3s}
.stack-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.stack-card .sq{width:44px;height:44px;border-radius:12px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;flex:none}
.stack-card b{display:block;font-size:15px}
.stack-card span{display:block;font-size:12px;color:var(--muted);font-weight:500}
.sc1{top:8px;left:0;z-index:3}
.sc2{top:120px;left:38px;z-index:2}
.sc3{top:232px;left:76px;z-index:1}
.stack .badge-float{top:auto;bottom:6px;left:10px;position:relative;display:inline-flex;margin-top:16px}

/* ---------- channels bento ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.ch{position:relative;display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:26px;box-shadow:var(--sh);transition:.25s;overflow:hidden}
.ch:hover{transform:translateY(-5px);box-shadow:var(--sh-h)}
.ch .sq{width:46px;height:46px;border-radius:14px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px}
.ch h3{font-size:20px;font-weight:700}
.ch p{font-size:14px;color:var(--muted)}
.ch .arw{position:absolute;right:24px;top:26px;font-size:18px;color:#D9B8AC;transition:.25s}
.ch:hover .arw{color:var(--pink);transform:translateX(4px)}
.span6{grid-column:span 6}
.span3{grid-column:span 3}
.ch.big{padding:30px;background:linear-gradient(150deg,#FFF3EC,#FFFFFF 62%)}
.ch.big h3{font-size:24px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.steps::before{content:"";position:absolute;top:28px;left:8%;right:8%;border-top:2px dashed #F8C9B5}
.step{position:relative;text-align:center;padding:0 8px}
.step .num{position:relative;width:56px;height:56px;margin:0 auto 16px;border-radius:50%;background:var(--grad);color:#fff;font-size:20px;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 26px rgba(242,65,107,.28);font-variant-numeric:tabular-nums}
.step h3{font-size:18px;font-weight:700;margin-bottom:4px}
.step p{font-size:14px;color:var(--muted)}

/* ---------- play features ---------- */
.play-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pf{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh);transition:.25s}
.pf:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.pf .sq{width:42px;height:42px;border-radius:12px;background:var(--soft);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:12px}
.pf h3{font-size:17px;font-weight:700;margin-bottom:4px}
.pf p{font-size:13px;color:var(--muted)}
.pf.big{grid-column:span 2;grid-row:span 2;background:linear-gradient(150deg,#FFF0E8,#FFFFFF 58%);display:flex;flex-direction:column;justify-content:space-between}
.pf.big .stage{position:relative;margin-top:18px;border-radius:16px;overflow:hidden;aspect-ratio:16/9;background:#1a1116}
.pf.big .stage img{width:100%;height:100%;object-fit:cover;opacity:.92}
.pf.big h3{font-size:22px}

/* ---------- data band ---------- */
.band{background:#2A1620;color:#fff;border-radius:var(--r-lg);padding:56px 40px}
.band .shead h2{color:#fff}
.band .shead p{color:#C9B4BB}
.band .tag{background:rgba(255,255,255,.1);color:#FFB9A5}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:12px}
.stat{padding:22px;border-radius:var(--r-md);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1)}
.stat .num{font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lb{display:block;font-size:15px;font-weight:700;margin-top:6px}
.stat .note{display:block;font-size:12px;color:#B79FA8;margin-top:2px}

/* ---------- features picks ---------- */
.picks{display:grid;grid-template-columns:1.42fr 1fr;gap:20px}
.pick-hero{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:340px;display:flex;align-items:flex-end;padding:30px;color:#fff;box-shadow:var(--sh)}
.pick-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.pick-hero:hover img{transform:scale(1.05)}
.pick-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(42,22,32,.08) 24%,rgba(42,22,32,.86) 100%)}
.pick-hero .inner{position:relative;z-index:2}
.pick-hero h3{font-size:24px;font-weight:800;margin:10px 0 6px}
.pick-hero p{font-size:14px;color:rgba(255,255,255,.86)}
.pick-side{display:grid;gap:20px}
.pick-card{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:16px;box-shadow:var(--sh);transition:.25s}
.pick-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.pick-card img{width:96px;height:96px;border-radius:14px;object-fit:cover;flex:none}
.pick-card h3{font-size:17px;font-weight:700;margin:6px 0 4px}
.pick-card p{font-size:13px;color:var(--muted)}

/* ---------- voices ---------- */
.voices{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:20px;align-items:start}
.voice{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:26px;box-shadow:var(--sh)}
.voice:nth-child(2){margin-top:34px}
.voice:nth-child(3){margin-top:12px}
.voice .top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--grad);flex:none}
.voice .who{font-size:14px;font-weight:700}
.voice .role{font-size:12px;color:var(--muted);font-weight:500}
.stars{color:#FF9A3D;font-size:13px;letter-spacing:2px;margin-bottom:8px}
.voice p{font-size:15px;color:#4A3B40}

/* ---------- scenes ---------- */
.scenes{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh);transition:.25s;display:flex;flex-direction:column}
.scene:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.scene .sq{width:42px;height:42px;border-radius:12px;background:var(--soft);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:12px}
.scene h3{font-size:17px;font-weight:700;margin-bottom:4px}
.scene p{font-size:13px;color:var(--muted);flex:1}
.scene .text-link{margin-top:14px;font-size:13px}

/* ---------- creator ---------- */
.creator{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;background:linear-gradient(140deg,#FFF0E8,#FFFFFF 66%);border:1px solid var(--line);border-radius:var(--r-lg);padding:56px 44px;box-shadow:var(--sh)}
.creator h2{font-size:clamp(26px,3.2vw,38px);font-weight:800;line-height:1.22;margin:16px 0 20px}
.creator ul li{display:flex;gap:10px;font-size:15px;color:var(--muted);padding:8px 0}
.creator ul li::before{content:"✓";color:var(--mint);font-weight:800}
.creator .btn{margin-top:24px}
.dash{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:12px;box-shadow:var(--sh)}
.dash img{border-radius:14px;aspect-ratio:16/10;object-fit:cover;width:100%}
.dash .badge-float{bottom:22px;right:-14px;top:auto;left:auto;position:absolute}

/* ---------- devices ---------- */
.devices{display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-end;gap:40px;margin-top:8px}
.device{display:flex;flex-direction:column;align-items:center;gap:14px}
.device .frame{border:3px solid #E9CFC4;border-radius:20px;background:#1b1216;position:relative;overflow:hidden;box-shadow:var(--sh)}
.device .frame::after{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(242,65,107,.36),rgba(255,176,90,.22))}
.d-phone .frame{width:84px;height:150px;border-radius:18px}
.d-pad .frame{width:132px;height:106px;border-radius:14px}
.d-tv .frame{width:170px;height:98px;border-radius:12px}
.d-web .frame{width:186px;height:118px;border-radius:10px}
.device span{font-size:13px;font-weight:700;color:var(--muted)}

/* ---------- news ---------- */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ncard{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh);transition:.25s;display:flex;flex-direction:column}
.ncard:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.ncard img{width:100%;aspect-ratio:16/9;object-fit:cover}
.ncard .body{padding:22px;display:flex;flex-direction:column;flex:1}
.ncard .meta{display:flex;gap:10px;align-items:center;font-size:12px;color:var(--muted);margin-bottom:8px}
.ncard .meta .lb{background:var(--soft);color:var(--pink);padding:2px 10px;border-radius:999px;font-weight:700}
.ncard h3{font-size:18px;font-weight:700;margin-bottom:6px}
.ncard p{font-size:13px;color:var(--muted);flex:1}
.ncard .text-link{margin-top:16px;font-size:13px}

/* ---------- metrics ---------- */
.metrics{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:36px;box-shadow:var(--sh);display:grid;grid-template-columns:repeat(2,1fr);gap:26px 44px}
.metric .mhead{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;font-weight:700;margin-bottom:8px}
.metric .mhead b{font-size:18px;font-variant-numeric:tabular-nums;color:var(--pink)}
.track{height:8px;border-radius:99px;background:#FBEAE2;overflow:hidden}
.track i{display:block;height:100%;border-radius:99px;background:var(--grad)}
.mnote{grid-column:1/-1;font-size:12px;color:var(--muted);margin-top:-6px}

/* ---------- faq ---------- */
.faq{max-width:900px;margin:0 auto;display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:var(--sh);overflow:hidden;transition:box-shadow .2s}
.faq-item.open{box-shadow:inset 3px 0 0 var(--pink),var(--sh)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:20px 24px;text-align:left;font-size:17px;font-weight:700}
.faq-q .sign{position:relative;width:22px;height:22px;flex:none;border-radius:50%;background:var(--soft);transition:transform .2s}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;left:50%;top:50%;background:var(--pink);border-radius:2px;transform:translate(-50%,-50%)}
.faq-q .sign::before{width:10px;height:2px}
.faq-q .sign::after{width:2px;height:10px;transition:opacity .2s}
.faq-item.open .faq-q .sign{transform:rotate(180deg)}
.faq-item.open .faq-q .sign::after{opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s ease}
.faq-a>div{overflow:hidden}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- final cta ---------- */
.final{position:relative;overflow:hidden;background:var(--grad);border-radius:var(--r-lg);padding:64px 48px;color:#fff;text-align:center;box-shadow:0 30px 70px rgba(242,65,107,.28)}
.final::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 18% 24%,rgba(255,255,255,.22) 0 8px,transparent 9px),radial-gradient(circle at 84% 76%,rgba(255,255,255,.18) 0 6px,transparent 7px);background-size:300px 300px,380px 380px;pointer-events:none}
.final h2{position:relative;font-size:clamp(26px,3.4vw,42px);font-weight:800;line-height:1.24}
.final p{position:relative;margin:14px auto 0;max-width:560px;font-size:15px;color:rgba(255,255,255,.9)}
.final .btns{position:relative;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:30px}
.final .btn-primary{background:#fff;color:var(--pink);box-shadow:0 14px 30px rgba(90,20,40,.22)}
.final .btn-primary:hover{background:#FFF3EC}
.final .btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.final .btn-ghost:hover{background:rgba(255,255,255,.14)}

/* ---------- footer ---------- */
.ft{background:#2A1620;color:#C9B4BB;padding:64px 0 28px;margin-top:96px}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.ft .flogo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:#fff;margin-bottom:14px}
.ft .flogo svg{width:28px;height:28px}
.ft p{font-size:14px;line-height:1.9}
.ft h4{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px}
.ft li a{display:block;font-size:14px;padding:5px 0;color:#C9B4BB;transition:color .2s}
.ft li a:hover{color:#FFB9A5}
.ft .bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#9C8790;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .sec{padding:72px 0}
  .hero{padding:40px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-sub{max-width:none}
  .solution,.creator{grid-template-columns:1fr;gap:36px}
  .creator{padding:40px 28px}
  .span6{grid-column:span 6}
  .span3{grid-column:span 6}
  .play-grid{grid-template-columns:repeat(2,1fr)}
  .pf.big{grid-column:span 2;grid-row:auto}
  .stats{grid-template-columns:repeat(2,1fr)}
  .picks{grid-template-columns:1fr}
  .voices{grid-template-columns:1fr 1fr}
  .voice:nth-child(2),.voice:nth-child(3){margin-top:0}
  .voices .voice:first-child{grid-column:span 2}
  .scenes{grid-template-columns:repeat(2,1fr)}
  .news{grid-template-columns:1fr 1fr}
  .ft-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .nav-act .ghost-link{display:none}
}
@media (max-width:768px){
  .sec{padding:56px 0}
  .nav-act .btn{display:none}
  .burger{display:flex}
  .shead.split{display:block}
  .shead.split .text-link{margin-top:14px}
  .pain-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:8px}
  .steps::before{display:none}
  .step{display:flex;gap:16px;text-align:left;padding:14px 0;align-items:flex-start}
  .step .num{margin:0;width:48px;height:48px;font-size:17px;flex:none}
  .stack{min-height:430px}
  .sc1,.sc2,.sc3{width:100%;left:0}
  .sc2{top:128px}
  .sc3{top:248px}
  .metrics{grid-template-columns:1fr;padding:26px}
  .band{padding:40px 24px}
  .devices{gap:28px}
  .ft{margin-top:56px}
}
@media (max-width:520px){
  .wrap{padding:0 18px}
  .hero-btns .btn{width:100%}
  .trust{gap:10px 18px;font-size:13px}
  .span6,.span3{grid-column:span 12}
  .play-grid{grid-template-columns:1fr}
  .pf.big{grid-column:span 1}
  .stats{grid-template-columns:1fr}
  .voices{grid-template-columns:1fr}
  .voices .voice:first-child{grid-column:span 1}
  .scenes{grid-template-columns:1fr}
  .news{grid-template-columns:1fr}
  .pick-card img{width:76px;height:76px}
  .final{padding:44px 22px}
  .final .btns .btn{width:100%}
  .ft-grid{grid-template-columns:1fr}
  .badge-float{font-size:11px;padding:7px 11px}
  .bf2{right:-8px}
  .device-mini{left:-8px;bottom:-16px}
  .faq-q{font-size:16px;padding:18px}
  .faq-a p{padding:0 18px 18px}
}

/* roulang page: index */
:root{
  --pink:#E8436B;
  --purple:#7A2E8E;
  --ink:#241A33;
  --bg:#FFF6F2;
  --bg2:#FFE9E2;
  --card:#FFFFFF;
  --mint:#16C7A3;
  --text:#1D1526;
  --muted:#6B6076;
  --line:#F0DFD9;
  --grad:linear-gradient(135deg,#FF7A94 0%,#E8436B 48%,#7A2E8E 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:16px;
  --r-xs:14px;
  --sh:0 10px 28px rgba(232,67,107,.10);
  --sh-h:0 18px 40px rgba(232,67,107,.20);
  --sh-d:0 12px 32px rgba(36,26,51,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1{font-size:50px;line-height:1.25;font-weight:800}
h2{font-size:36px;line-height:1.35;font-weight:800}
h3{font-size:21px;line-height:1.5;font-weight:700}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.sec{padding:96px 0}
.sec-tint{background:var(--bg2)}
.sec-head{max-width:780px;margin-bottom:44px}
.sec-head p{margin-top:16px;color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--purple);
  background:var(--bg2);border-radius:999px;padding:6px 16px;margin-bottom:20px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background-position .2s ease;
}
.btn-main{background:var(--grad);background-size:160% 160%;color:#fff;box-shadow:0 10px 24px rgba(232,67,107,.28)}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(232,67,107,.36);background-position:20% 50%}
.btn-ghost{background:#fff;color:var(--pink);border-color:rgba(232,67,107,.45)}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--sh)}
.btn-white{background:#fff;color:var(--pink);box-shadow:0 12px 28px rgba(36,26,51,.20)}
.btn-white:hover{transform:translateY(-2px)}
.btn:focus-visible{outline:2px solid var(--pink);outline-offset:3px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--pink);transition:gap .18s ease}
.link-more:hover{gap:11px}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:60;background:rgba(255,246,242,.94);backdrop-filter:blur(6px);transition:box-shadow .2s ease,border-color .2s ease;border-bottom:1px solid transparent}
.site-head.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 18px rgba(232,67,107,.08)}
.head-inner{display:flex;align-items:center;gap:36px;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink);flex:0 0 auto}
.brand-mark{width:30px;height:30px;border-radius:10px;border:1.5px solid var(--pink);display:grid;place-items:center;color:var(--pink);font-size:13px}
.nav{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav a{position:relative;font-size:15px;color:var(--muted);padding:6px 0;transition:color .18s ease}
.nav a:hover,.nav a.active{color:var(--ink)}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;border-radius:999px;background:var(--grad)}
.head-cta{min-height:44px;padding:0 22px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;margin-left:auto;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 1 hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 96px}
.hero::before{
  content:"";position:absolute;top:-260px;left:-220px;width:760px;height:760px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,148,.34) 0%,rgba(232,67,107,.16) 45%,rgba(255,246,242,0) 72%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-copy h1{margin-bottom:18px}
.hero-sub{font-size:18px;font-weight:600;color:var(--purple);margin-bottom:16px}
.hero-desc{color:var(--muted);max-width:560px;margin-bottom:28px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.trust{display:flex;flex-wrap:wrap;gap:12px 28px}
.trust li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.trust i{color:var(--mint);font-size:13px}
.hero-visual{position:relative}
.hero-shot{border-radius:var(--r-lg);overflow:hidden;box-shadow:0 24px 60px rgba(232,67,107,.26)}
.hero-shot img{width:100%;aspect-ratio:4/3;object-fit:cover}
.badge{
  position:absolute;z-index:3;display:inline-flex;align-items:baseline;gap:5px;
  padding:12px 18px 12px 28px;border-radius:999px;border:1px solid transparent;
  background-image:linear-gradient(rgba(255,255,255,.92),rgba(255,255,255,.92)),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 10px 28px rgba(232,67,107,.18);white-space:nowrap;font-size:12px;color:var(--muted);
}
.badge::before{content:"";position:absolute;left:13px;top:50%;width:7px;height:7px;border-radius:50%;background:var(--mint);transform:translateY(-50%)}
.badge b{font-size:26px;font-weight:700;line-height:1;color:var(--ink);font-family:Oswald,"DIN Alternate",system-ui,sans-serif}
.badge i,.badge em{font-style:normal;font-size:12px;color:var(--muted)}
.badge-a{top:-16px;left:-22px;transform:rotate(-4deg)}
.badge-b{bottom:54px;right:-18px;transform:rotate(3deg)}
.badge-c{bottom:-18px;left:14%;transform:rotate(-2deg)}

/* ---------- 2 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;padding-bottom:24px}
.pain-card{display:flex;gap:20px;background:var(--card);border-radius:var(--r-md);padding:28px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease}
.pain-card:nth-child(2n){transform:translateY(24px)}
.pain-card:hover{transform:translateY(-6px);box-shadow:var(--sh-h)}
.pain-card:nth-child(2n):hover{transform:translateY(18px)}
.ico{flex:0 0 auto;width:48px;height:48px;border-radius:var(--r-xs);display:grid;place-items:center;background:var(--bg2);color:var(--pink);font-size:18px}
.pain-card h3{margin-bottom:6px;font-size:19px}
.pain-card p{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- 3 方案 ---------- */
.sol-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.card{position:relative;background:var(--card);border-radius:var(--r-md);box-shadow:var(--sh);padding:28px;transition:transform .2s ease,box-shadow .2s ease;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);opacity:0;transition:opacity .2s ease}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-h)}
.card:hover::before{opacity:1}
.sol-wide{padding:32px}
.sol-wide h3{margin:18px 0 12px;font-size:22px}
.sol-wide p{color:var(--muted);font-size:15px;margin-bottom:16px;max-width:440px}
.sol-narrow{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:32px}
.sol-mini h3{font-size:19px;margin:16px 0 8px}
.sol-mini p{font-size:14px;color:var(--muted)}

/* ---------- 4 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative}
.steps::before{content:"";position:absolute;top:28px;left:8%;right:8%;border-top:2px dashed rgba(232,67,107,.3)}
.step{position:relative;z-index:1}
.step-no{
  width:56px;height:56px;border-radius:999px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:18px;
  box-shadow:0 8px 20px rgba(232,67,107,.28),0 0 0 8px var(--bg);
  margin-bottom:20px;font-family:Oswald,"DIN Alternate",system-ui,sans-serif;
}
.step h3{font-size:20px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}

/* ---------- 5 数据 ---------- */
.stats{background:var(--ink);color:#fff;padding:96px 0;position:relative;overflow:hidden}
.stats::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,67,107,.30) 0%,rgba(122,46,142,.16) 55%,rgba(36,26,51,0) 76%);
}
.stats .sec-head p{color:rgba(255,255,255,.68)}
.stats .eyebrow{background:rgba(255,255,255,.12);color:#FFB3C4}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;z-index:2}
.stat{background:rgba(255,255,255,.94);border-radius:var(--r-md);padding:26px 28px;box-shadow:var(--sh-d)}
.stat b{display:block;font-size:42px;line-height:1.1;font-weight:700;color:var(--ink);font-family:Oswald,"DIN Alternate",system-ui,sans-serif}
.stat b span{font-size:14px;color:var(--muted);font-weight:600;margin-left:4px}
.stat em{display:flex;align-items:center;gap:8px;font-style:normal;font-size:13px;color:var(--muted);margin-top:8px}
.stat em::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--mint)}

/* ---------- 6 片单 ---------- */
.grid12{display:grid;grid-template-columns:repeat(12,1fr);gap:32px}
.c8{grid-column:span 8}
.c4{grid-column:span 4}
.c6{grid-column:span 6}
.pick{background:var(--card);border-radius:var(--r-md);box-shadow:var(--sh);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;display:block}
.pick:hover{transform:translateY(-6px);box-shadow:var(--sh-h)}
.pick-img{border-radius:var(--r-sm);overflow:hidden;margin:10px}
.pick-img img{width:100%;object-fit:cover}
.pick-big .pick-img img{aspect-ratio:16/9}
.pick-tall .pick-img img{aspect-ratio:3/4}
.pick-sq .pick-img img{aspect-ratio:1/1}
.pick-body{padding:6px 22px 22px}
.tag{display:inline-block;font-size:12px;font-weight:600;color:var(--purple);background:var(--bg2);border-radius:999px;padding:3px 12px}
.pick-body h3{font-size:19px;margin:10px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick-meta{font-size:13px;color:var(--muted)}
.pick-row{display:flex;align-items:center;gap:16px;padding:18px 22px}
.pick-row .pick-img{margin:0;flex:0 0 96px}
.pick-row .pick-img img{aspect-ratio:4/3;border-radius:12px}
.pick-row h3{font-size:17px;margin:6px 0 4px}
.side-note{background:var(--bg2);border-radius:var(--r-md);padding:28px;display:flex;flex-direction:column;justify-content:center;gap:14px}
.side-note h3{font-size:19px}
.side-note p{font-size:14px;color:var(--muted)}

/* ---------- 7 场景 ---------- */
.scene-rows{display:grid;gap:24px}
.scene-row{display:grid;gap:24px}
.scene-row-a{grid-template-columns:1.25fr 1fr}
.scene-row-b{grid-template-columns:1fr 1.25fr}
.scene{display:flex;gap:20px;align-items:flex-start;background:#fff;border-radius:var(--r-md);padding:24px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease}
.scene:hover{transform:translateY(-6px);box-shadow:var(--sh-h)}
.scene .ico{background:linear-gradient(135deg,rgba(255,122,148,.16),rgba(122,46,142,.14));color:var(--purple)}
.scene h3{font-size:18px;margin-bottom:6px}
.scene p{font-size:14px;color:var(--muted)}

/* ---------- 8 证言 ---------- */
.voices{background:var(--bg2);padding:96px 0}
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;align-items:start}
.voice{background:#fff;border-radius:var(--r-md);padding:26px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease}
.voice:nth-child(2){margin-top:28px}
.voice:hover{transform:translateY(-6px);box-shadow:var(--sh-h)}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;font-size:16px}
.voice-top strong{display:block;font-size:15px}
.stars{color:#F5A623;font-size:12px;letter-spacing:2px}
.voice p{font-size:14px;color:var(--muted)}

/* ---------- 9 人群 ---------- */
.people-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.person{position:relative;background:#fff;border-radius:var(--r-md);padding:28px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease}
.person:hover{transform:translateY(-6px);box-shadow:var(--sh-h)}
.person .num{font-family:Oswald,"DIN Alternate",system-ui,sans-serif;font-size:40px;font-weight:700;color:rgba(232,67,107,.18);line-height:1;display:block;margin-bottom:8px}
.person h3{font-size:19px;margin-bottom:8px}
.person p{font-size:14px;color:var(--muted);margin-bottom:16px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:12px;font-weight:600;color:var(--purple);background:var(--bg2);border-radius:999px;padding:4px 12px}

/* ---------- 10 设备 ---------- */
.devices{background:var(--bg2);padding:96px 0}
.dev-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px}
.dev{background:transparent;text-align:center;padding:16px 12px}
.dev .ico{margin:0 auto 14px;width:56px;height:56px;border-radius:20px;background:#fff;color:var(--pink);font-size:22px;box-shadow:0 8px 20px rgba(232,67,107,.12)}
.dev strong{display:block;font-size:15px;margin-bottom:4px}
.dev span{font-size:12px;color:var(--muted)}

/* ---------- 11 专题 ---------- */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.article{background:#fff;border-radius:var(--r-md);box-shadow:var(--sh);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column}
.article:hover{transform:translateY(-6px);box-shadow:var(--sh-h)}
.article-img{margin:10px;border-radius:var(--r-sm);overflow:hidden}
.article-img img{width:100%;aspect-ratio:16/10;object-fit:cover}
.article-body{padding:8px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.article-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}
.article-body h3{font-size:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-body .link-more{margin-top:auto;font-size:13px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- 12 指标条 ---------- */
.metrics{padding:64px 0}
.metrics-track{display:flex;gap:18px;overflow-x:auto;padding:4px 0 14px;scrollbar-width:none;-ms-overflow-style:none}
.metrics-track::-webkit-scrollbar{display:none}
.metric{flex:0 0 auto;min-width:190px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:16px 26px;display:flex;align-items:center;gap:12px}
.metric b{font-size:22px;font-weight:700;color:var(--ink);font-family:Oswald,"DIN Alternate",system-ui,sans-serif}
.metric span{font-size:13px;color:var(--muted)}
.metric::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mint);flex:0 0 auto}

/* ---------- 13 FAQ ---------- */
.faq{display:grid;gap:14px;max-width:900px}
.faq-item{background:#fff;border-radius:var(--r-sm);box-shadow:var(--sh);overflow:hidden}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;padding:20px 26px;font-size:16px;font-weight:600;min-height:44px;
}
.faq-q .dot{position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--bg2);color:var(--pink);display:grid;place-items:center;font-size:12px;transition:background .2s ease,color .2s ease,transform .2s ease}
.faq-item.open .faq-q .dot{background:var(--grad);color:#fff;transform:rotate(180deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .26s ease}
.faq-a > div{overflow:hidden}
.faq-a p{padding:0 26px 22px;font-size:14px;color:var(--muted)}

/* ---------- 14 节奏 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;align-items:start}
.plan{position:relative;background:#fff;border-radius:26px;padding:30px;box-shadow:var(--sh);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}
.plan::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad)}
.plan:hover{box-shadow:var(--sh-h)}
.plan.hot{transform:translateY(-12px);box-shadow:var(--sh-h)}
.plan h3{font-size:21px;margin-bottom:6px}
.plan .plan-sub{font-size:14px;color:var(--muted);margin-bottom:18px}
.plan ul{display:grid;gap:10px;margin-bottom:24px}
.plan li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text)}
.plan li i{color:var(--mint);font-size:12px;margin-top:6px}
.plan .btn{width:100%}

/* ---------- 15 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--grad);border-radius:28px;
  padding:64px 32px;text-align:center;color:#fff;
}
.cta-band::before{
  content:"";position:absolute;left:-90px;top:-90px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.14);
}
.cta-band::after{
  content:"";position:absolute;right:-70px;bottom:-110px;width:280px;height:280px;
  border-radius:50% 50% 50% 0;transform:rotate(45deg);background:rgba(255,255,255,.12);
}
.cta-band h2{position:relative;z-index:2;margin-bottom:14px}
.cta-band p{position:relative;z-index:2;max-width:620px;margin:0 auto 28px;color:rgba(255,255,255,.88);font-size:15px}
.cta-band .btn{position:relative;z-index:2}

/* ---------- footer ---------- */
.site-foot{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:96px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:#fff;margin-bottom:14px}
.foot-brand .brand-mark{border-color:rgba(255,255,255,.5);color:#fff}
.site-foot h4{font-size:15px;color:#fff;margin:0 0 16px;font-weight:700}
.foot-col a{display:block;font-size:14px;padding:6px 0;color:rgba(255,255,255,.66);transition:color .18s ease}
.foot-col a:hover{color:#fff}
.foot-col p{font-size:14px;margin:0 0 6px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;font-size:13px;color:rgba(255,255,255,.5);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- 响应式 1024 ---------- */
@media (max-width:1024px){
  .wrap{padding:0 24px}
  .sec,.stats,.voices,.devices{padding:72px 0}
  h1{font-size:42px}
  h2{font-size:32px}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr 1fr;gap:36px}
  .badge b{font-size:22px}
  .badge-a{left:-8px}
  .badge-b{right:-8px}
  .steps{grid-template-columns:repeat(2,1fr);gap:40px 32px}
  .steps::before{display:none}
  .dev-grid{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav{gap:22px}
  .head-inner{gap:20px}
}

/* ---------- 响应式 768 ---------- */
@media (max-width:768px){
  .nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;z-index:70;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:#fff;padding:12px 24px 96px;overflow-y:auto;
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;
  }
  body.nav-open .nav{transform:none;opacity:1;pointer-events:auto}
  body.nav-open{overflow:hidden}
  .nav a{font-size:18px;line-height:1.8;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink)}
  .nav a.active::after{display:none}
  .nav a.active{color:var(--pink)}
  .nav-toggle{display:flex}
  .head-cta{display:none}
  body.nav-open .nav::after{
    content:"浏览片单";display:block;text-align:center;margin-top:24px;
    padding:14px 0;border-radius:999px;background:var(--grad);color:#fff;font-weight:600;
  }
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-copy h1{font-size:34px}
  .hero-visual{order:2}
  .badge-c{left:4%}
  .pain-grid,.sol-grid,.sol-narrow,.people-grid,.scene-row-a,.scene-row-b{grid-template-columns:1fr}
  .pain-card:nth-child(2n){transform:none}
  .pain-card:nth-child(2n):hover{transform:translateY(-6px)}
  .steps{grid-template-columns:1fr;gap:28px}
  .steps::before{display:block;top:0;bottom:20px;left:27px;right:auto;border-top:0;border-left:2px dashed rgba(232,67,107,.3)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .grid12{grid-template-columns:1fr}
  .c8,.c4,.c6{grid-column:1/-1}
  .voice-grid,.article-grid,.plans{grid-template-columns:1fr}
  .voice:nth-child(2){margin-top:0}
  .plan.hot{transform:none}
  .dev-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:48px 24px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .site-foot{margin-top:72px;padding-top:56px}
  .sec-head-row{flex-direction:column;align-items:flex-start}
}

/* ---------- 响应式 520 ---------- */
@media (max-width:520px){
  body{font-size:15px;line-height:1.8}
  .wrap{padding:0 16px}
  .sec,.stats,.voices,.devices{padding:48px 0}
  h1{font-size:28px}
  h2{font-size:24px}
  h3{font-size:18px}
  .hero{padding:40px 0 56px}
  .hero-sub{font-size:16px}
  .hero-btns{gap:10px}
  .hero-btns .btn{flex:1 1 100%}
  .badge{padding:9px 14px 9px 24px;font-size:11px}
  .badge b{font-size:19px}
  .badge-a{top:-12px;left:-6px}
  .badge-b{bottom:14px;right:-6px}
  .badge-c{display:none}
  .stats-grid{grid-template-columns:1fr 1fr;gap:14px}
  .stat{padding:18px}
  .stat b{font-size:30px}
  .stat em{font-size:12px}
  .pain-card,.card,.person,.plan{padding:20px}
  .sol-wide{padding:24px}
  .dev-grid{grid-template-columns:1fr 1fr;gap:12px}
  .metric{min-width:160px;padding:12px 20px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .cta-band{padding:36px 20px;border-radius:20px}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .foot-bottom{flex-direction:column}
}