:root{
  --brand:#ff5a1f;--brand-d:#d43f0e;--brand-2:#f43f5e;--brand-l:#fff1ea;
  --ink:#251a1a;--ink2:#5d5152;--ink3:#978b8c;--bg:#fffaf7;--bg2:#fff4ee;
  --line:#f5e4dc;--deep:#2a1412;--wrap:1120px;
}
*{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:1.72;-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}
.sec-k{font-size:11.5px;letter-spacing:2.4px;font-weight:800;color:var(--brand-d);text-transform:uppercase}
.sec-h{max-width:650px;margin-bottom:34px}
.sec-h h2{font-size:37px;line-height:1.24;letter-spacing:-.6px;margin:9px 0 11px;font-weight:800}
.sec-h p{font-size:14.8px;color:var(--ink2)}

/* header */
.sh{position:sticky;top:0;z-index:60;background:rgba(255,250,247,.94);backdrop-filter:saturate(160%) blur(12px);
  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:16.5px;line-height:1.2}
.sh-brand small{display:block;font-size:11px;color:var(--ink3);letter-spacing:.5px}
.sh nav{display:flex;gap:26px;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 19px;border-radius:19px;
  background:var(--brand);color:#fff;font-size:14px;font-weight:700;box-shadow:0 2px 7px rgba(212,63,14,.3);
  transition:background .18s}
.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:9px;height:53px;padding:0 32px;
  border-radius:26px;background:var(--brand);color:#fff;font-size:16.5px;font-weight:700;
  box-shadow:0 4px 16px -6px rgba(212,63,14,.65);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:#fff5f0}

/* hero：左右对切 */
.hero{position:relative;display:grid;grid-template-columns:1.02fr .98fr;min-height:568px;overflow:hidden}
.hero-txt{background:linear-gradient(150deg,#ff6a2b,#f0402a 58%,#e0334f);color:#fff;position:relative;
  padding:64px 0 56px;display:flex;align-items:center}
.hero-txt::after{content:"";position:absolute;right:-46px;top:0;bottom:0;width:92px;
  background:linear-gradient(150deg,#ff6a2b,#f0402a 58%,#e0334f);transform:skewX(-8deg);z-index:1}
.hero-txt .wrap{padding-right:60px}
.hero-txt .in{position:relative;z-index:2;max-width:560px}
.kicker{display:inline-flex;align-items:center;gap:9px;font-size:11.5px;letter-spacing:1.6px;color:#ffe0d2;
  font-weight:800;text-transform:uppercase}
.kicker i{width:22px;height:2px;background:#fff;display:inline-block;opacity:.8}
.hero h1{font-size:62px;line-height:1.02;letter-spacing:-2px;margin:14px 0 10px;font-weight:800}
.hero .lead{font-size:20px;font-weight:700;color:#fff;margin-bottom:10px}
.hero .desc{font-size:14.6px;color:rgba(255,255,255,.82);line-height:1.85}
.acts{display:flex;gap:12px;margin:24px 0 20px;flex-wrap:wrap}
.acts .btn{background:#fff;color:var(--brand-d);box-shadow:0 6px 18px -8px rgba(80,20,10,.6)}
.acts .btn:hover{background:#fff4ef}
.hero-facts{display:flex;gap:20px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.28);padding-top:16px}
.hero-facts li{font-size:12.5px;color:rgba(255,255,255,.68)}
.hero-facts b{display:block;font-size:13.5px;color:#fff;font-weight:800}
.upd{font-size:11.5px;color:rgba(255,255,255,.55);margin-top:14px}

.hero-art{position:relative;background:#2a1412;overflow:hidden}
.hero-art>img{width:100%;height:100%;object-fit:cover;object-position:center 28%;opacity:.92}
.hero-art::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(224,51,79,.28),transparent 55%)}
.phone{position:absolute;left:-52px;bottom:-36px;z-index:3;width:212px;height:390px;border-radius:26px;
  border:6px solid #1d100f;background:#1d100f;overflow:hidden;box-shadow:0 30px 50px -26px rgba(0,0,0,.8);
  transform:rotate(-4deg)}
.phone img{width:100%;height:100%;object-fit:cover;object-position:top center;border-radius:20px}
.phone::before{content:"";position:absolute;left:50%;top:6px;transform:translateX(-50%);width:52px;height:5px;
  border-radius:3px;background:#3a2a28;z-index:2}
.tag{position:absolute;z-index:4;background:#fff;border-radius:12px;padding:9px 13px;font-size:12px;
  color:var(--ink2);box-shadow:0 14px 30px -20px rgba(0,0,0,.7)}
.tag b{display:block;font-size:12.8px;color:var(--ink)}
.tag.t1{right:26px;top:36px}
.tag.t2{right:26px;top:104px;background:var(--deep);color:#ffd9cc}
.tag.t2 b{color:#fff}
.tag.t3{left:20px;top:150px;display:none}

/* 更新节奏条 */
.pace{background:#fff;border-bottom:1px solid var(--line)}
.pace .wrap{display:flex;align-items:center;gap:14px;padding:15px 22px;flex-wrap:wrap}
.pace>p{font-size:11.5px;letter-spacing:2px;font-weight:800;color:var(--ink3);text-transform:uppercase;flex:none}
.pace ul{display:flex;gap:8px;flex-wrap:wrap}
.pace li{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--ink2);border:1px solid var(--line);
  border-radius:99px;padding:4px 11px;background:var(--bg)}
.pace li b{color:var(--brand-d);font-weight:800;font-size:12px}
.pace li.on{border-color:var(--brand);background:var(--brand-l);color:var(--brand-d)}
.pace-note{flex-basis:100%;font-size:12.6px;line-height:1.75;color:var(--ink3);border-top:1px dashed var(--line);padding-top:10px;margin-top:2px}

/* guide：分步说明 */
.guide{padding:72px 0 66px;background:#fff}
.gbox{background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:26px 28px}
.gbox ol{display:grid;grid-template-columns:1fr 1fr;gap:14px 32px;counter-reset:g}
.gbox li{position:relative;padding-left:28px;font-size:13.6px;color:var(--ink2);counter-increment:g}
.gbox li::before{content:counter(g);position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:6px;
  background:var(--brand);color:#fff;font-size:11.5px;font-weight:800;display:grid;place-items:center}
.gnote{margin-top:18px;font-size:13.2px;color:var(--ink2);border-left:3px solid var(--brand);padding:4px 0 4px 12px}

/* feat：参数表 */
.feat{padding:72px 0 66px;background:var(--bg2)}
.spec{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.spec article{padding:20px 0 18px;border-top:1px solid var(--line)}
.spec article:nth-child(1),.spec article:nth-child(2){border-top:2px solid var(--ink)}
.spec h4{font-size:17px;font-weight:800;margin-bottom:5px;display:flex;align-items:baseline;gap:9px}
.spec h4 b{font-size:11px;color:var(--brand);letter-spacing:1px}
.spec p{font-size:13.5px;color:var(--ink2)}

/* show：错位双列 */
.show{padding:74px 0 68px;background:#fff}
.show-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px 26px}
.figure{background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:14px 14px 0;
  display:flex;flex-direction:column}
.figure:nth-child(2){margin-top:34px}
.figure img{width:100%;height:340px;object-fit:cover;object-position:top center;border-radius:10px 10px 0 0}
.figure figcaption{padding:12px 4px 14px;font-size:12.8px;color:var(--ink2)}
.figure figcaption b{display:block;font-size:13.5px;color:var(--ink);font-weight:800;margin-bottom:1px}
.show-side{display:grid;gap:12px;align-content:center}
.show-side div{border-left:2px solid var(--brand);padding-left:14px;font-size:13.4px;color:var(--ink2)}
.show-side b{display:block;font-size:14.5px;color:var(--ink);font-weight:800;margin-bottom:1px}
.show-below{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px;
  border-top:1px solid var(--line);padding-top:22px}
.show-below div{font-size:13.2px;color:var(--ink2)}
.show-below b{display:block;font-size:13.8px;color:var(--ink);margin-bottom:2px}

/* faq */
.faq{padding:70px 0 66px;background:var(--bg2)}
.faq .sec-h{margin-left:auto;margin-right:auto;text-align:center}
.faq-list{max-width:820px;margin:0 auto}
.faq-list .item{padding:20px 0;border-bottom:1px dashed #e8d3c9}
.faq-list .item:first-child{border-top:1px dashed #e8d3c9}
.faq-list h3{font-size:16px;font-weight:800;margin-bottom:6px;display:flex;gap:10px;align-items:baseline}
.faq-list h3 span{flex:none;font-size:11px;font-weight:800;color:#fff;background:var(--brand);border-radius:5px;
  padding:2px 7px;letter-spacing:.5px}
.faq-list p{font-size:13.8px;color:var(--ink2);padding-left:36px}

/* voices：一大五小 */
.voices{padding:72px 0 66px;background:#fff}
.vgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.vgrid blockquote{border:1px solid var(--line);border-radius:14px;padding:18px 18px 14px;background:#fff;
  display:flex;flex-direction:column;gap:9px}
.vgrid blockquote.big{grid-column:span 2;background:var(--brand-l);border-color:#ffd9c7}
.vgrid p{font-size:13.2px;color:var(--ink2);flex:1}
.vgrid blockquote.big p{font-size:14.2px;color:#5a3a32}
.vgrid footer{display:flex;align-items:center;gap:8px;font-size:11.8px;color:var(--ink3);border-top:1px solid rgba(0,0,0,.06);
  padding-top:9px}
.vgrid footer i{width:22px;height:22px;border-radius:7px;background:#fff;border:1px solid var(--line);
  color:var(--brand-d);font-style:normal;font-weight:800;font-size:10.5px;display:flex;align-items:center;
  justify-content:center}
.vgrid footer cite{font-style:normal;font-weight:700;color:var(--ink2)}
.vgrid footer time{margin-left:auto;font-size:10.5px;font-variant-numeric:tabular-nums}

/* get */
.get{padding:0 0 70px;background:#fff}
.get-card{display:flex;align-items:center;gap:26px;flex-wrap:wrap;border:1px dashed var(--brand);border-radius:20px;
  padding:28px 32px;background:linear-gradient(120deg,#fff6f1,#fff)}
.get-card img{width:60px;height:60px;border-radius:15px;object-fit:cover;flex:none}
.get-txt{flex:1;min-width:250px}
.get h2{font-size:30px;letter-spacing:-.6px;font-weight:800;margin-bottom:4px}
.get p{font-size:13.6px;color:var(--ink2);max-width:520px}
.get-meta{display:flex;gap:18px;flex-wrap:wrap;margin-top:10px;font-size:11.5px;color:var(--ink3)}
.get-meta span{display:inline-flex;align-items:center;gap:6px}
.get-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand)}

/* footer */
.ft{background:var(--deep);color:#c9b4ad;padding:40px 0 28px}
.ft-in{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.ft-brand{display:flex;align-items:center;gap:10px;color:#fff}
.ft-brand img{width:32px;height:32px;border-radius:9px;object-fit:cover}
.ft-brand strong{font-size:15.5px}
.ft p{font-size:12.4px;color:#a08b84;margin-top:9px;max-width:380px}
.ft h4{font-size:11.5px;color:#fff;letter-spacing:2px;text-transform:uppercase;margin-bottom:9px;font-weight:800}
.ft a,.ft span{display:block;font-size:12.4px;color:#a08b84;padding:3px 0}
.ft a:hover{color:#ffb69b}
.ft-copy{font-size:11.8px;color:#8a7770;margin-top:24px;border-top:1px solid rgba(255,255,255,.1);padding-top:14px}

.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(37,26,26,.6)}
.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:1000px){
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-txt{padding:44px 0 40px}
  .hero-txt::after{display:none}
  .hero-txt .wrap{padding-right:22px}
  .hero h1{font-size:42px}
  .hero-art{min-height:320px}
  .hero-art>img{position:absolute;inset:0}
  .phone{display:none}
  .tag.t1{top:18px;right:18px}
  .tag.t2{top:76px;right:18px}
  .spec{grid-template-columns:1fr}
  .spec article:nth-child(2){border-top:1px solid var(--line)}
  .gbox ol{grid-template-columns:1fr}
  .show-grid{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px}
  .figure{flex:0 0 72%;scroll-snap-align:start;margin-top:0!important}
  .figure img{height:300px}
  .show-below{grid-template-columns:1fr}
  .vgrid{grid-template-columns:1fr 1fr}
  .vgrid blockquote.big{grid-column:span 2}
  .ft-in{grid-template-columns:1fr 1fr}
  .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:620px){
  .hero h1{font-size:34px}
  .hero .lead{font-size:17px}
  .hero-facts{gap:14px}
  .sec-h h2{font-size:28px}
  .vgrid{grid-template-columns:1fr}
  .vgrid blockquote.big{grid-column:span 1}
  .get-card{padding:22px}
  .get h2{font-size:25px}
  .btn{width:100%}
  .faq-list p{padding-left:0}
}