:root{
  --brand:#d0533c;--brand-d:#a83a26;--brand-l:#fdf1ec;--silver:#d9dee3;
  --ink:#221b19;--ink2:#544b47;--ink3:#8a807b;
  --bg:#fff;--bg2:#fbf7f5;--line:#efe6e2;--wrap:1140px;
}
*{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,.88);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;letter-spacing:.2px;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{position:relative;padding:6px 0}
.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;gap:6px;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(168,58,38,.26);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;letter-spacing:.3px;
  box-shadow:0 2px 8px rgba(168,58,38,.3);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);box-shadow:0 2px 10px rgba(30,20,15,.22)}
.btn-light:hover{background:#fdf2ee}

/* hero 叠屏 */
.hero{padding:72px 0 80px;overflow:hidden;position:relative;
  background:linear-gradient(180deg,#fdf3ef 0%,#fff 76%)}
.hero::before{content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(217,222,227,.55),transparent 70%)}
.hero-in{display:grid;grid-template-columns:1fr .96fr;gap:46px;align-items:center;position:relative;z-index:2}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:1.6px;color:var(--brand-d);
  text-transform:uppercase;font-weight:700}
.kicker i{width:22px;height:2px;background:var(--brand);display:inline-block}
.hero h1{font-size:56px;line-height:1.06;letter-spacing:-1.2px;margin:16px 0 14px;font-weight:800}
.hero .lead{font-size:21px;font-weight:600;margin-bottom:12px}
.hero .desc{font-size:15px;color:var(--ink2);max-width:520px;line-height:1.85}
.acts{display:flex;align-items:center;gap:14px;margin:26px 0 26px;flex-wrap:wrap}
.facts{display:flex;gap:30px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:20px}
.facts li{font-size:14px;font-weight:700}
.facts li span{display:block;font-size:12.5px;color:var(--ink3);font-weight:400;margin-top:2px}
.upd{font-size:12.5px;color:var(--ink3);margin-top:14px}

.art-frames{position:relative;height:512px}
.art-frames .ph{position:absolute;border-radius:26px;overflow:hidden;background:#fff;
  border:7px solid #fff;box-shadow:0 26px 48px -24px rgba(34,27,25,.5)}
.art-frames .ph img{width:100%;height:100%;object-fit:cover;object-position:top;border-radius:19px}
.art-frames .p-main{width:236px;height:456px;right:6%;top:12px;z-index:3}
.art-frames .p-left{width:176px;height:330px;left:2%;top:80px;z-index:2;transform:rotate(-6deg)}
.art-frames .p-right{width:168px;height:300px;right:0;bottom:26px;z-index:1;transform:rotate(5deg)}
.art-frames blockquote{position:absolute;z-index:4;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:10px 14px;font-size:12.5px;color:var(--ink2);box-shadow:0 14px 26px -18px rgba(34,27,25,.42)}
.art-frames blockquote b{display:block;font-size:13px;color:var(--ink);margin-bottom:1px}
.art-frames .q1{left:0;top:24px}
.art-frames .q2{left:6%;bottom:38px}

/* 数据条 */
.stats{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats ul{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stats li{padding:22px 12px;text-align:center;border-right:1px solid var(--line)}
.stats li:last-child{border-right:0}
.stats b{display:block;font-size:26px;letter-spacing:-.5px;color:var(--brand-d);font-weight:800;line-height:1.2}
.stats span{font-size:12.5px;color:var(--ink3)}

/* section 公共 */
.sec-h{max-width:660px;margin-bottom:40px}
.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)}

/* bento 特色 */
.feat{padding:84px 0 78px;background:var(--bg2)}
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.bcard{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 26px 24px;
  position:relative;overflow:hidden}
.bcard.hi{background:var(--brand-l);border-color:#f6ded4}
.bcard.dark{background:#2b2422;color:#fff;border-color:#2b2422}
.bcard.dark p{color:rgba(255,255,255,.66)}
.bcard.dark h4{color:#fff}
.bcard .bn{font-size:12px;font-weight:800;letter-spacing:1.2px;color:var(--brand)}
.bcard.dark .bn{color:#f0a48f}
.bcard h4{font-size:19px;font-weight:700;margin:10px 0 6px}
.bcard p{font-size:14px;color:var(--ink2)}
.bcard::after{content:"";position:absolute;right:-30px;bottom:-30px;width:110px;height:110px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(208,83,60,.12),transparent 70%)}

/* 界面 */
.show{padding:88px 0;background:#fff}
.show-in{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}
.device{position:relative;width:264px;height:512px;margin:0 auto;border-radius:32px;background:#241e1c;
  border:8px solid #241e1c;box-shadow:0 30px 55px -26px rgba(34,27,25,.55)}
.device img{width:100%;height:100%;object-fit:cover;object-position:top;border-radius:24px}
.device::after{content:"";position:absolute;left:50%;top:8px;transform:translateX(-50%);width:62px;height:6px;
  border-radius:3px;background:#3a3230}
.show-txt h2{font-size:36px;line-height:1.24;letter-spacing:-.6px;margin:10px 0 12px;font-weight:800}
.show-txt>p{font-size:15px;color:var(--ink2)}
.ui-rows{margin-top:18px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}
.ui-row{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);font-size:13.5px}
.ui-row:last-child{border-bottom:0}
.ui-row i{width:30px;height:30px;border-radius:9px;background:var(--brand-l);color:var(--brand-d);flex:none;
  display:flex;align-items:center;justify-content:center;font-style:normal;font-size:12px;font-weight:800}
.ui-row span{margin-left:auto;font-size:12px;color:var(--ink3)}
.device figcaption{position:absolute;left:0;right:0;bottom:-26px;text-align:center;font-size:12px;color:var(--ink3)}

/* 使用指南 */
.guide{padding:84px 0;background:#fff;border-top:1px solid var(--line)}
.guide ol{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:g}
.guide li{position:relative;padding:48px 20px 20px;background:var(--bg2);border:1px solid var(--line);
  border-radius:16px;font-size:13.5px;color:var(--ink2);line-height:1.75}
.guide li::before{counter-increment:g;content:"0" counter(g);position:absolute;top:18px;left:20px;
  font-size:12px;font-weight:800;color:var(--brand);letter-spacing:1.2px}
.guide h4{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}

/* FAQ */
.faq{padding:84px 0 80px;background:var(--bg2)}
.faq-list{border-top:1px solid var(--line)}
.faq-item{padding:22px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:38px 1fr;gap:16px}
.faq-item .q{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:1px;padding-top:3px}
.faq-item h3{font-size:16.5px;font-weight:700;margin-bottom:6px}
.faq-item p{font-size:14px;color:var(--ink2);max-width:820px}

/* voices */
.voices{padding:82px 0;background:#fff}
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.voice{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 22px 20px;
  display:flex;flex-direction:column;gap:12px}
.voice:nth-child(1),.voice:nth-child(4){background:var(--bg2)}
.voice p{font-size:14px;color:var(--ink2);flex:1}
.voice footer{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--ink3);border-top:1px solid var(--line);padding-top:12px}
.voice footer i{width:26px;height:26px;border-radius:50%;background:var(--brand-l);color:var(--brand-d);
  font-style:normal;font-size:12px;font-weight:700;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{padding:66px 0;background:#2b2422;color:#fff}
.get-in{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;flex-direction:row-reverse}
.get h2{font-size:34px;letter-spacing:-.5px;margin-bottom:8px;font-weight:800}
.get p{font-size:14.5px;color:rgba(255,255,255,.66);max-width:540px}

/* footer */
.ft{background:#f6f1ee;border-top:1px solid #eadfd9;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 #eadfd9;padding-top:16px}

/* backtop */
.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(34,27,25,.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}}

/* responsive */
@media(max-width:960px){
  .hero h1{font-size:44px}
  .hero-in,.show-in{grid-template-columns:1fr;gap:34px}
  .art-frames{height:440px;transform:scale(.94)}
  .stats ul{grid-template-columns:1fr 1fr}
  .stats li:nth-child(2){border-right:0}
  .stats li:nth-child(1),.stats li:nth-child(2){border-bottom:1px solid var(--line)}
  .bento{grid-template-columns:1fr}
  .bcard{grid-column:auto}
  .guide ol{grid-template-columns:1fr 1fr}
  .voice-grid{grid-template-columns:1fr}
  .sec-h h2{font-size:30px}
  .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{padding:42px 0 52px}
  .hero h1{font-size:34px}
  .hero .lead{font-size:18px}
  .art-frames{height:380px}
  .art-frames .p-main{width:196px;height:372px;right:2%}
  .art-frames .p-left{width:136px;height:252px;top:66px}
  .art-frames .p-right{width:128px;height:230px}
  .art-frames .q1,.art-frames .q2{display:none}
  .device{width:220px;height:430px}
  .guide ol{grid-template-columns:1fr}
  .get h2{font-size:26px}
  .btn{width:100%}
  .facts{gap:18px}
  .bcard{padding:22px}
}