:root{
  --brand:#ef4d8b;--brand-d:#c72f6c;--brand-l:#fdeef4;--brand-2:#f8b3cc;
  --ink:#1a1418;--ink2:#544a50;--ink3:#8a8087;
  --bg:#fff;--bg2:#fbf7f9;--line:#efe4e9;--wrap:1140px;--dark:#171113;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;background:none;border:0;cursor:pointer;color:inherit}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 22px}

/* header */
.sh{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.9);backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .2s}
.sh.on{border-bottom-color:var(--line)}
.sh-in{display:flex;align-items:center;gap:26px;height:66px}
.sh-brand{display:flex;align-items:center;gap:10px;flex:none}
.sh-brand img{width:38px;height:38px;border-radius:11px;object-fit:cover}
.sh-brand strong{display:block;font-size:16px;line-height:1.2}
.sh-brand small{display:block;font-size:11px;color:var(--ink3);letter-spacing:.4px}
.sh nav{display:flex;gap:24px;margin-left:auto;font-size:14px;color:var(--ink2)}
.sh nav a{padding:6px 0;position:relative}
.sh nav a:hover{color:var(--brand-d)}
.sh nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .2s}
.sh nav a:hover::after{transform:scaleX(1)}
.sh-cta{flex:none;display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:19px;
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;box-shadow:0 2px 6px rgba(199,47,108,.28);transition:.2s}
.sh-cta:hover{background:var(--brand-d)}
.sh-menu{display:none;margin-left:auto;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:52px;padding:0 30px;border-radius:26px;
  background:var(--brand);color:#fff;font-size:16px;font-weight:600;box-shadow:0 2px 8px rgba(199,47,108,.32);
  transition:transform .18s,background .18s}
.btn:hover{background:var(--brand-d);transform:translateY(-1px)}
.btn svg{width:18px;height:18px}
.btn-light{background:#fff;color:var(--brand-d)}
.btn-light:hover{background:#fdf0f5}

/* hero 深色海报 */
.hero{background:var(--dark);color:#fff;overflow:hidden;position:relative}
.hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(46% 70% at 82% 24%,rgba(239,77,139,.32),transparent 70%),
  radial-gradient(40% 60% at 10% 90%,rgba(239,77,139,.14),transparent 70%)}
.hero-in{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:40px;align-items:center;
  padding:70px 0 64px}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:1.6px;color:#f7a8c6;
  text-transform:uppercase;font-weight:700}
.kicker i{width:22px;height:2px;background:var(--brand);display:inline-block}
.hero h1{font-size:58px;line-height:1.04;letter-spacing:-1.4px;margin:16px 0 14px;font-weight:800}
.hero .lead{font-size:21px;font-weight:600;margin-bottom:12px;color:#ffe9f1}
.hero .desc{font-size:15px;color:rgba(255,255,255,.66);max-width:510px;line-height:1.85}
.acts{display:flex;align-items:center;gap:14px;margin:26px 0 24px;flex-wrap:wrap}
.hero-facts{display:flex;gap:26px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding-top:18px}
.hero-facts li{font-size:13.5px;font-weight:700;color:#fff}
.hero-facts li span{display:block;font-weight:400;font-size:12.5px;color:rgba(255,255,255,.5);margin-top:2px}
.upd{font-size:12.5px;color:rgba(255,255,255,.45);margin-top:14px}

.hero-art{position:relative;height:500px}
.hero-art .poster{position:absolute;right:4%;top:6px;width:246px;height:462px;border-radius:26px;overflow:hidden;
  border:1px solid rgba(255,255,255,.16);box-shadow:0 30px 60px -24px rgba(0,0,0,.8)}
.hero-art .poster img{width:100%;height:100%;object-fit:cover}
.hero-art .chip{position:absolute;z-index:3;background:rgba(28,20,24,.86);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:11px 15px;font-size:12.5px;color:#fff}
.hero-art .chip b{display:block;font-size:14px;margin-bottom:1px}
.hero-art .chip.c1{left:0;top:44px}
.hero-art .chip.c2{left:12%;bottom:36px}
.hero-art .chip.c3{right:0;bottom:96px;background:var(--brand);border-color:var(--brand)}
.hero-art .bar{position:absolute;right:4%;bottom:0;width:246px;height:6px;border-radius:3px;
  background:linear-gradient(90deg,var(--brand),transparent)}

/* stats 条 */
.stats{background:#fff;border-bottom:1px solid var(--line)}
.stats .wrap{display:flex;flex-wrap:wrap}
.stats li{flex:1;min-width:150px;padding:20px 10px;text-align:center;border-right:1px solid var(--line)}
.stats li:last-child{border-right:0}
.stats b{display:block;font-size:24px;font-weight:800;color:var(--brand-d);line-height:1.2}
.stats span{font-size:12.5px;color:var(--ink3)}

/* 公共 */
.sec-h{max-width:640px;margin-bottom:38px}
.sec-k{font-size:12px;letter-spacing:2px;font-weight:700;color:var(--brand-d);text-transform:uppercase}
.sec-h h2{font-size:38px;line-height:1.22;letter-spacing:-.6px;margin:10px 0 12px;font-weight:800}
.sec-h p{font-size:15px;color:var(--ink2)}

/* 特色：编辑式横条 */
.feat{padding:80px 0 74px;background:var(--bg2)}
.row-list{border-top:1px solid var(--line)}
.row-list article{display:grid;grid-template-columns:76px 1fr 1.2fr;gap:26px;padding:26px 0;
  border-bottom:1px solid var(--line);align-items:start}
.row-list .no{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:1.5px;padding-top:4px}
.row-list h4{font-size:19px;font-weight:700}
.row-list p{font-size:14px;color:var(--ink2)}
.row-list article:nth-child(2n){background:linear-gradient(90deg,transparent,var(--brand-l) 22%,transparent)}
.row-list article:nth-child(2n) h4{color:var(--brand-d)}

/* 界面 */
.show{padding:84px 0;background:#fff}
.show-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;flex-wrap:wrap;margin-bottom:34px}
.show-grid{display:grid;grid-template-columns:280px 1fr;gap:46px;align-items:center}
.phone{position:relative;width:268px;height:516px;border-radius:34px;background:#191316;border:8px solid #191316;
  box-shadow:0 28px 55px -26px rgba(26,20,24,.6)}
.phone img{width:100%;height:100%;object-fit:cover;object-position:top;border-radius:26px}
.phone::before{content:"";position:absolute;left:50%;top:8px;transform:translateX(-50%);width:66px;height:6px;
  border-radius:3px;background:#33282d;z-index:2}
.ui-card{border:1px solid var(--line);border-radius:16px;overflow:hidden}
.ui-card .row{display:flex;align-items:center;gap:12px;padding:13px 16px;border-bottom:1px solid var(--line);font-size:13.5px}
.ui-card .row:last-child{border-bottom:0}
.ui-card .row b{font-weight:700}
.ui-card .row em{margin-left:auto;font-style:normal;font-size:12px;color:var(--brand-d);background:var(--brand-l);
  border-radius:99px;padding:2px 9px}
.ui-note{font-size:13px;color:var(--ink3);margin-top:12px}
/* 使用指南 */
.guide{padding:84px 0;background:#fff;border-top:1px solid var(--line)}
.guide ol{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.guide li{background:var(--bg2);border-radius:14px;padding:18px 18px 16px}
.guide li b{display:block;font-size:15px;font-weight:700;margin-bottom:4px}
.guide li span{font-size:13.5px;color:var(--ink2)}

/* FAQ：左标题右列表 */
.faq{padding:82px 0 78px;background:var(--bg2)}
.faq-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:46px;align-items:start}
.faq-side{position:sticky;top:90px}
.faq-side h2{font-size:36px;line-height:1.24;letter-spacing:-.6px;margin:10px 0 12px;font-weight:800}
.faq-side p{font-size:14px;color:var(--ink2)}
.faq-list{display:grid;gap:10px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.faq-item h3{font-size:16px;font-weight:700;margin-bottom:5px;display:flex;gap:9px;align-items:baseline}
.faq-item h3 span{font-size:12px;color:var(--brand);font-weight:800;flex:none}
.faq-item p{font-size:13.8px;color:var(--ink2)}

/* 评价：横滑 */
.voices{padding:80px 0 74px;background:#fff}
.voice-track{display:flex;gap:16px;overflow-x:auto;padding:4px 2px 16px;scroll-snap-type:x mandatory}
.voice{flex:0 0 330px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:20px 20px 18px;display:flex;flex-direction:column;gap:12px}
.voice:nth-child(2n){background:var(--bg2)}
.voice p{font-size:14px;color:var(--ink2);flex:1}
.voice footer{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink3)}
.voice footer i{width:26px;height:26px;border-radius:50%;background:var(--brand-l);color:var(--brand-d);
  font-style:normal;font-weight:700;font-size:12px;display:flex;align-items:center;justify-content:center}
.voice footer cite{font-style:normal;font-weight:600;color:var(--ink2)}
.voice footer time{margin-left:auto;font-size:11.5px;font-variant-numeric:tabular-nums}

/* get */
.get{background:var(--dark);color:#fff;padding:62px 0;position:relative;overflow:hidden}
.get::before{content:"";position:absolute;right:-80px;top:-90px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(239,77,139,.28),transparent 70%)}
.get-in{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap}
.get h2{font-size:36px;letter-spacing:-.6px;margin-bottom:8px;font-weight:800}
.get p{font-size:14.5px;color:rgba(255,255,255,.6);max-width:520px}

/* footer */
.ft{background:#f7f2f4;border-top:1px solid #ece1e6;padding:40px 0 34px}
.ft-in{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
.ft-brand{display:flex;align-items:center;gap:10px}
.ft-brand img{width:32px;height:32px;border-radius:9px;object-fit:cover}
.ft-brand strong{font-size:15px}
.ft p{font-size:12.5px;color:var(--ink3);max-width:430px;margin-top:10px}
.ft-links{display:flex;gap:18px;font-size:13px;color:var(--ink3)}
.ft-links a:hover{color:var(--brand-d)}
.ft-copy{font-size:12px;color:var(--ink3);margin-top:22px;border-top:1px solid #ece1e6;padding-top:16px}

.backtop{position:fixed;right:24px;bottom:84px;z-index:50;width:42px;height:42px;border-radius:50%;
  display:none;align-items:center;justify-content:center;background:#fff;border:1px solid var(--line);
  color:var(--ink);box-shadow:0 10px 24px -14px rgba(26,20,24,.55)}
.backtop.on{display:flex}
.backtop:hover{color:var(--brand-d);border-color:var(--brand)}
@media(max-width:768px){.backtop{right:16px;bottom:76px}}

.rv{animation:rvIn .5s ease both}
@keyframes rvIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.rv{animation:none}}

@media(max-width:960px){
  .hero h1{font-size:44px}
  .hero-in,.show-grid,.faq-grid{grid-template-columns:1fr;gap:32px}
  .hero-art{height:420px}
  .hero-art .poster{width:210px;height:396px;right:2%}
  .guide ol{grid-template-columns:1fr}
  .row-list article{grid-template-columns:52px 1fr;gap:12px}
  .row-list p{grid-column:2}
  .sec-h h2,.faq-side h2{font-size:30px}
  .faq-side{position:static}
  .sh nav{display:none}
  .sh-menu{display:inline-flex}
  .sh-cta{margin-left:10px}
  .sh nav.open{display:flex;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;
    padding:14px 22px 18px;gap:14px;border-bottom:1px solid var(--line)}
}
@media(max-width:560px){
  .hero-in{padding:46px 0 40px}
  .hero h1{font-size:34px}
  .hero .lead{font-size:18px}
  .hero-art{height:360px}
  .hero-art .poster{width:180px;height:340px}
  .hero-art .chip{padding:9px 12px;font-size:11.5px}
  .hero-art .chip.c1{top:20px}
  .hero-art .chip.c2{bottom:24px}
  .hero-art .chip.c3{display:none}
  .phone{width:230px;height:452px}
  .voice{flex:0 0 86%}
  .get h2{font-size:26px}
  .btn{width:100%}
}