/* ==========================================================
   创新声乐 Chuangxin Sound — 官网样式
   配色沿用微信小程序：主色 #C7352B，背景 #F4F5F7
   ========================================================== */
:root{
  --red:#c7352b; --red-d:#a92b22; --red-l:#fdf2f1;
  --ink:#16181d; --ink-2:#3f4450; --ink-3:#7a8090; --ink-4:#a3a9b6;
  --line:#e6e8ec; --bg:#f4f5f7; --white:#fff;
  --radius:14px; --radius-lg:20px;
  --wrap:1180px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 10px 30px -12px rgba(16,24,40,.14);
  --shadow-sm:0 1px 2px rgba(16,24,40,.05);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--font);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.22;letter-spacing:-.02em;font-weight:800}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* 语言显隐 */
html[data-lang="zh"] .en{display:none!important}
html[data-lang="en"] .zh{display:none!important}

/* ---------- 顶栏 ---------- */
.topbar{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;gap:26px;height:70px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand .mark{width:36px;height:36px;border-radius:10px;background:var(--red);color:#fff;
  display:grid;place-items:center;font-weight:900;font-size:15px;letter-spacing:-.5px}
.brand .name{display:block;font-weight:800;font-size:15.5px;letter-spacing:-.3px;line-height:1.2}
.brand .sub{display:block;font-size:11.5px;color:var(--ink-3);letter-spacing:.02em;line-height:1.4}
nav.main{display:flex;align-items:center;gap:4px;margin-left:6px}
nav.main a{padding:8px 12px;border-radius:8px;font-size:14.5px;font-weight:600;color:var(--ink-2);
  white-space:nowrap;transition:.18s}
nav.main a:hover{background:var(--bg);color:var(--ink)}
nav.main a.on{color:var(--red);background:var(--red-l)}
.head-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.lang{display:flex;background:var(--bg);border-radius:99px;padding:3px}
.lang button{padding:5px 11px;border-radius:99px;font-size:13px;font-weight:700;color:var(--ink-3);line-height:1.3}
.lang button.on{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:11px 20px;border-radius:10px;font-weight:700;font-size:14.5px;transition:.18s;white-space:nowrap}
.btn.primary{background:var(--red);color:#fff}
.btn.primary:hover{background:var(--red-d)}
.btn.line{border:1.5px solid var(--line);color:var(--ink);background:#fff}
.btn.line:hover{border-color:var(--ink-4)}
.btn.sm{padding:9px 15px;font-size:13.5px;border-radius:9px}
.menu-btn{display:none;place-items:center;width:40px;height:38px;border-radius:9px;color:var(--ink-2)}

/* ---------- Hero ---------- */
.hero{position:relative;background:#15171c;color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(760px 420px at 82% 18%,rgba(199,53,43,.30),transparent 62%),
             radial-gradient(600px 400px at 8% 92%,rgba(199,53,43,.12),transparent 66%)}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:52px;
  align-items:center;padding-top:74px;padding-bottom:74px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  letter-spacing:.09em;text-transform:uppercase;color:#f0b3ac;margin-bottom:18px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--red);border-radius:2px}
.hero h1{font-size:47px;line-height:1.14;letter-spacing:-.035em}
.hero h1 em{font-style:normal;color:#f2705f;display:block}
.hero .lead{margin-top:18px;color:#b9bfcc;font-size:16.5px;max-width:520px}
.hero .tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.hero .tags span{font-size:13px;font-weight:600;color:#dfe3ea;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.05);border-radius:99px;padding:6px 13px}
.hero .cta{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.hero .cta .btn{border-radius:11px;padding:13px 24px;font-size:15px}
.hero .cta .btn.line{border-color:rgba(255,255,255,.24);background:transparent;color:#fff}
.hero .cta .btn.line:hover{background:rgba(255,255,255,.08)}
.hero .stats{display:flex;gap:38px;margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12)}
.hero .stat b{display:block;font-size:27px;font-weight:800;letter-spacing:-.03em;line-height:1.1;white-space:nowrap}
.hero .stat small{color:#9aa2b1;font-size:12.5px;letter-spacing:.02em}
.hero .art{position:relative}
.hero .art .glow{position:absolute;inset:8% 6%;border-radius:50%;
  background:radial-gradient(closest-side,rgba(255,255,255,.10),transparent)}
.hero .art img{position:relative;width:100%;max-width:470px;margin:0 auto;border-radius:18px;
  background:#fff;box-shadow:0 30px 70px -24px rgba(0,0,0,.75)}
.hero .art .badge{position:absolute;left:0;bottom:6%;background:#fff;color:var(--ink);
  border-radius:12px;padding:10px 14px;box-shadow:0 14px 34px -10px rgba(0,0,0,.45);font-size:12.5px;font-weight:700}
.hero .art .badge small{display:block;color:var(--ink-3);font-weight:600;font-size:11px}

/* ---------- 区块 ---------- */
.sec{padding:78px 0}
.sec.tint{background:var(--bg)}
.sec.tight{padding:56px 0}
.sec-head{max-width:660px;margin-bottom:38px}
.kicker{display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.1em;
  text-transform:uppercase;color:var(--red);margin-bottom:12px}
.sec-head h2{font-size:34px;letter-spacing:-.03em}
.sec-head p{margin-top:13px;color:var(--ink-3);font-size:16px}
.sec-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.link-more{font-size:14.5px;font-weight:700;color:var(--red);white-space:nowrap}
.link-more:hover{text-decoration:underline}

/* 分类 */
.cats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cat{position:relative;display:flex;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:20px;transition:.22s;overflow:hidden}
.cat:hover{border-color:#f3c6c2;box-shadow:var(--shadow);transform:translateY(-2px)}
.cat .ph{width:96px;height:96px;flex:0 0 auto;border-radius:12px;background:var(--bg);overflow:hidden}
.cat .ph img{width:100%;height:100%;object-fit:contain;padding:5px;background:#fbfcfd}
.cat h3{font-size:17px}
.cat .t{font-size:13px;color:var(--ink-3);margin-top:3px}
.cat .n{display:inline-block;margin-top:9px;font-size:12.5px;font-weight:700;color:var(--red);
  background:var(--red-l);border-radius:99px;padding:3px 10px}
.cat .arrow{margin-left:auto;color:var(--ink-4);font-size:18px}

/* 产品卡 */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:.22s}
.pcard:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#e9d9d7}
.pcard .ph{position:relative;aspect-ratio:1/1;background:#f7f8fa;overflow:hidden}
.pcard .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.pcard:hover .ph img{transform:scale(1.04)}
.pcard .tag{position:absolute;top:10px;left:10px;background:var(--red);color:#fff;font-size:11.5px;
  font-weight:800;letter-spacing:.02em;border-radius:6px;padding:3px 8px}
.pcard .hot{position:absolute;top:10px;right:10px;background:rgba(255,255,255,.94);color:var(--red);
  font-size:11px;font-weight:800;border-radius:6px;padding:3px 7px;border:1px solid #f6d5d1}
.pcard .play{position:absolute;right:10px;bottom:10px;width:26px;height:26px;border-radius:50%;
  background:rgba(22,24,29,.72);color:#fff;display:grid;place-items:center;font-size:10px}
.pcard .body{padding:14px 15px 16px;display:flex;flex-direction:column;flex:1}
.pcard .cat-t{font-size:11.5px;font-weight:700;color:var(--ink-4);letter-spacing:.04em;text-transform:uppercase}
.pcard h3{font-size:16px;margin-top:5px;letter-spacing:-.01em}
.pcard .sum{margin-top:6px;font-size:12.8px;color:var(--ink-3);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pcard .more{margin-top:auto;padding-top:12px;font-size:12.8px;font-weight:700;color:var(--red)}

/* 实力 */
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.fact{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px}
.fact .ic{width:34px;height:34px;border-radius:9px;background:var(--red-l);color:var(--red);
  display:grid;place-items:center;font-weight:900;font-size:15px;margin-bottom:14px}
.fact h4{font-size:16px;margin-bottom:7px}
.fact p{font-size:13.5px;color:var(--ink-3);line-height:1.6}

/* 场景 */
.scenes{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.scene{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 10px;text-align:center}
.scene b{display:block;font-size:14px;font-weight:700}
.scene small{display:block;font-size:11.5px;color:var(--ink-4);margin-top:3px}
.scene .e{font-size:20px;margin-bottom:8px}

/* CTA 条 */
.band{background:#15171c;color:#fff;border-radius:var(--radius-lg);padding:44px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  background-image:radial-gradient(600px 260px at 88% 20%,rgba(199,53,43,.35),transparent 65%)}
.band h2{font-size:27px;letter-spacing:-.03em}
.band p{color:#b9bfcc;margin-top:8px;font-size:14.5px}
.band .btn.line{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.band .btn.line:hover{background:rgba(255,255,255,.08)}

/* ---------- 产品页 ---------- */
.page-head{background:var(--bg);border-bottom:1px solid var(--line);padding:36px 0 34px}
.page-head h1{font-size:32px;letter-spacing:-.03em}
.page-head p{margin-top:9px;color:var(--ink-3);font-size:15px}
.crumb{font-size:13px;color:var(--ink-4);margin-bottom:12px}
.crumb a:hover{color:var(--red)}
.toolbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chips button{padding:8px 15px;border-radius:99px;border:1px solid var(--line);background:#fff;
  font-size:13.5px;font-weight:700;color:var(--ink-2);transition:.16s}
.chips button.on{background:var(--red);border-color:var(--red);color:#fff}
.chips button:hover{border-color:var(--ink-4)}
.search{margin-left:auto;position:relative}
.search input{width:250px;padding:10px 14px 10px 36px;border-radius:99px;border:1px solid var(--line);
  background:#fff;font-size:14px;outline:none;font-family:inherit}
.search input:focus{border-color:var(--red);box-shadow:0 0 0 3px var(--red-l)}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--ink-4)}
.count-line{font-size:13.5px;color:var(--ink-3);margin-bottom:16px}
.empty{text-align:center;padding:70px 0;color:var(--ink-3)}

/* ---------- 产品详情 ---------- */
.pd{padding:30px 0 0}
.pd-top{display:grid;grid-template-columns:1.02fr .98fr;gap:44px;align-items:start}
.gal .main{background:#f7f8fa;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;position:relative;aspect-ratio:1/1;display:grid;place-items:center}
.gal .main img{width:100%;height:100%;object-fit:contain}
.gal .thumbs{display:flex;gap:9px;margin-top:11px;flex-wrap:wrap}
.gal .thumbs button{width:64px;height:64px;border-radius:9px;overflow:hidden;border:2px solid transparent;
  background:#f7f8fa;padding:0}
.gal .thumbs button.on{border-color:var(--red)}
.gal .thumbs img{width:100%;height:100%;object-fit:cover}
.pd-info .model{font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--red);text-transform:uppercase}
.pd-info h1{font-size:32px;margin-top:9px;letter-spacing:-.03em}
.pd-info .sum{margin-top:12px;color:var(--ink-2);font-size:15.5px}
.pd-info .feat{margin-top:20px;display:grid;gap:8px}
.pd-info .feat li{display:flex;gap:9px;font-size:14px;color:var(--ink-2);line-height:1.55}
.pd-info .feat li::before{content:"";flex:0 0 auto;width:5px;height:5px;border-radius:50%;
  background:var(--red);margin-top:9px}
.pd-spec{margin-top:24px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.pd-spec .hd{padding:12px 16px;background:var(--bg);font-size:13px;font-weight:800;letter-spacing:.03em;
  color:var(--ink-2);border-bottom:1px solid var(--line)}
.pd-spec table{width:100%;border-collapse:collapse;font-size:14px}
.pd-spec th,.pd-spec td{padding:10px 16px;text-align:left;vertical-align:top;border-bottom:1px solid #f0f1f4}
.pd-spec tr:last-child th,.pd-spec tr:last-child td{border-bottom:0}
.pd-spec th{width:38%;color:var(--ink-3);font-weight:600;background:#fcfcfd}
.pd-spec td{color:var(--ink);font-weight:600}
.pd-actions{display:flex;gap:10px;margin-top:24px;flex-wrap:wrap}
.pd-actions .btn{padding:13px 24px}
.pd-note{margin-top:14px;font-size:12.5px;color:var(--ink-4)}

.pd-tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-top:60px;flex-wrap:wrap}
.pd-tabs button{padding:12px 18px;font-size:14.5px;font-weight:700;color:var(--ink-3);
  border-bottom:2px solid transparent;margin-bottom:-1px}
.pd-tabs button.on{color:var(--red);border-color:var(--red)}
.pd-media{padding:26px 0 70px}
.pd-media .video-box{background:#000;border-radius:var(--radius);overflow:hidden;max-width:880px}
.pd-media video{width:100%;display:block}
.longimg{max-width:820px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.longimg img{width:100%}
.longimg .hd{padding:12px 16px;font-size:13px;font-weight:700;color:var(--ink-2);
  border-bottom:1px solid var(--line);background:var(--bg)}
.desc-box{max-width:820px;font-size:15px;color:var(--ink-2);line-height:1.85}
.desc-box .sub{font-weight:800;color:var(--ink);margin:18px 0 6px;font-size:14px}
.desc-box .row{display:flex;gap:6px;padding:3px 0}
.desc-box .row b{color:var(--red);font-weight:700;flex:0 0 auto}

/* ---------- 公司页 ---------- */
.about-top{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.about-top h1{font-size:36px;letter-spacing:-.035em}
.about-top .desc{margin-top:18px;color:var(--ink-2);font-size:15.5px;line-height:1.85}
.about-top .pic{border-radius:var(--radius-lg);overflow:hidden;background:#f7f8fa;border:1px solid var(--line)}
.about-top .pic img{width:100%}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px}
.stat-row .s{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.stat-row b{display:block;font-size:25px;letter-spacing:-.03em;font-weight:800;white-space:nowrap}
.stat-row small{color:var(--ink-3);font-size:12.5px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px}
.panel h3{font-size:19px;margin-bottom:16px}
.panel li{display:flex;gap:10px;padding:7px 0;font-size:14.5px;color:var(--ink-2)}
.panel li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--red);margin-top:10px;flex:0 0 auto}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:26px;align-items:start}
.c-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.c-item:last-child{border-bottom:0}
.c-item .ic{width:38px;height:38px;flex:0 0 auto;border-radius:10px;background:var(--red-l);color:var(--red);
  display:grid;place-items:center}
.c-item b{display:block;font-size:13.5px;color:var(--ink-3);font-weight:700;margin-bottom:2px}
.c-item span{font-size:15px;font-weight:600}
.c-item a:hover{color:var(--red)}
form.inq{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px}
form.inq .f{margin-bottom:14px}
form.inq label{display:block;font-size:13px;font-weight:700;color:var(--ink-2);margin-bottom:6px}
form.inq input,form.inq textarea,form.inq select{width:100%;padding:11px 13px;border:1px solid var(--line);
  border-radius:9px;font-size:14.5px;font-family:inherit;outline:none;background:#fff}
form.inq input:focus,form.inq textarea:focus,form.inq select:focus{border-color:var(--red);box-shadow:0 0 0 3px var(--red-l)}
form.inq textarea{min-height:104px;resize:vertical}
form.inq .ok{display:none;margin-top:12px;font-size:13.5px;font-weight:700;color:#1a7f47;
  background:#eefaf2;border:1px solid #c9eed8;border-radius:9px;padding:10px 13px}
form.inq .ok.show{display:block}

/* ---------- FAQ ---------- */
.faq-groups{display:grid;gap:26px;max-width:900px}
.faq-g h3{font-size:18px;margin-bottom:12px;padding-left:14px;position:relative}
.faq-g h3::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--red)}
.qa{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:9px;overflow:hidden}
.qa summary{list-style:none;cursor:pointer;padding:16px 18px;font-size:15px;font-weight:700;
  display:flex;align-items:flex-start;gap:12px;line-height:1.55}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";margin-left:auto;color:var(--ink-4);font-weight:700;font-size:19px;line-height:1}
.qa[open] summary::after{content:"–"}
.qa summary:hover{color:var(--red)}
.qa .a{padding:0 18px 18px;font-size:14.5px;color:var(--ink-2);line-height:1.85}

/* ---------- 页脚 ---------- */
footer{background:#101216;color:#9aa2b1;padding:52px 0 30px;font-size:13.5px}
footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
footer h4{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.02em}
footer a{display:block;padding:4px 0;color:#9aa2b1}
footer a:hover{color:#fff}
footer .brand .name{color:#fff}
footer .brand .sub{color:#7c8494}
footer .bottom{margin-top:38px;padding-top:20px;border-top:1px solid #22252c;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#767e8e}

/* ---------- 响应 ---------- */
@media (max-width:1080px){
  .hero h1{font-size:40px}
  .grid{grid-template-columns:repeat(3,1fr)}
  .facts{grid-template-columns:repeat(2,1fr)}
  .scenes{grid-template-columns:repeat(3,1fr)}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:880px){
  .hero .wrap{grid-template-columns:1fr;gap:36px;padding-top:52px;padding-bottom:56px}
  .hero .art{order:-1}
  .hero .art img{max-width:340px}
  .hero h1{font-size:34px}
  .hero .stats{gap:26px}
  .cats{grid-template-columns:1fr}
  .pd-top{grid-template-columns:1fr;gap:30px}
  .about-top{grid-template-columns:1fr;gap:30px}
  .contact-grid,.two-col{grid-template-columns:1fr}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .band{flex-direction:column;align-items:flex-start;padding:32px 26px}
  .sec{padding:56px 0}
  .sec-head h2{font-size:27px}
  .about-top h1{font-size:28px}
  nav.main{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);padding:10px 16px;flex-direction:column;align-items:stretch;gap:2px;
    box-shadow:0 14px 26px -18px rgba(0,0,0,.3)}
  nav.main.open{display:flex}
  nav.main a{padding:12px 10px;font-size:15px}
  .menu-btn{display:grid}
  .head-right .btn{display:none}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .pcard .body{padding:11px 12px 13px}
  .pcard h3{font-size:14.5px}
  .pcard .sum{font-size:12px}
  .pcard .cat-t{font-size:10.5px}
  .facts,.scenes,.stat-row{grid-template-columns:1fr 1fr}
  .hero h1{font-size:29px}
  .hero .lead{font-size:15px}
  .hero .stats{gap:20px;flex-wrap:wrap}
  .hero .stat b{font-size:22px}
  .brand .sub{display:none}
  .search{margin-left:0;width:100%}
  .search input{width:100%}
  .toolbar{gap:10px}
  .pd-info h1{font-size:25px}
  .band h2{font-size:22px}
  footer .cols{grid-template-columns:1fr 1fr;gap:22px}
  .gal .thumbs button{width:54px;height:54px}
  .sec-head.row{flex-direction:column;align-items:flex-start;gap:12px}
}