/* 博飞音乐工作室官网 · 全局样式
   断点：桌面 >=1024 / 平板 768-1023 / 手机 <768 / 小屏 <480 */
:root{
  --bg:#0B0C0E; --bg-alt:#101216; --card:#15171B; --card-2:#1A1D22;
  --line:#25282E; --text:#F5F3EE; --body:#B6B8BD; --muted:#8E9096; --faint:#6E7075;
  --gold:#D8B25A; --gold-soft:#E8C989; --orange:#E8752C;
  --radius:8px; --maxw:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;line-height:1.6}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p{margin:0}
button,input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 100px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,12,14,.96);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.brand img{width:242px;height:43px;object-fit:contain}
.nav{display:flex;align-items:center;gap:32px;flex:1;justify-content:center}
.nav-link{font-size:14px;color:var(--muted);position:relative;white-space:nowrap;transition:color .2s}
.nav-link::after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:1px;
  background:var(--gold);transition:right .25s ease}
.nav-link:hover,.nav-link.active{color:var(--text)}
.nav-link:hover::after,.nav-link.active::after{right:0}
.header-actions{display:flex;align-items:center;gap:16px}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);background:transparent;
  border-radius:4px;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer}
.nav-toggle span{width:18px;height:1.5px;background:var(--text);display:block;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:15px 32px;
  border-radius:4px;border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,color .2s;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--gold);color:#0B0C0E}
.btn-primary:hover{background:#E8C989;box-shadow:0 10px 28px rgba(216,178,90,.22)}
.btn-ghost{border-color:rgba(216,178,90,.8);color:var(--gold-soft);background:transparent}
.btn-ghost:hover{background:rgba(216,178,90,.1)}
.btn-sm{padding:12px 24px;font-size:14px}
.btn-block{width:100%}
.text-link{color:var(--gold);font-size:14px;font-weight:600;display:inline-block;transition:color .2s}
.text-link:hover{color:var(--gold-soft);text-decoration:underline}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:min(820px,90vh);display:flex;align-items:center;overflow:hidden;isolation:isolate}
.hero-media,.hero-shade{position:absolute;inset:0;z-index:-1}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-shade{background:linear-gradient(90deg,rgba(4,5,6,.96) 0%,rgba(4,5,6,.78) 42%,rgba(4,5,6,.30) 100%)}
.hero-inner{padding-top:80px;padding-bottom:120px}
.hero-eyebrow{display:flex;align-items:center;gap:12px;color:var(--gold);font-size:13px;
  letter-spacing:1.4px;font-family:Inter,system-ui,sans-serif;font-weight:600;margin-bottom:24px}
.hero-eyebrow i{width:30px;height:2px;background:var(--gold);display:block}
.hero h1{font-size:clamp(38px,5.4vw,76px);line-height:1.25;font-weight:700;letter-spacing:1px}
.hero-sub{font-size:19px;line-height:1.9;color:#C3C5CA;margin-top:22px;max-width:720px}
.hero-actions{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap}
.hero-trust{position:absolute;bottom:44px;left:100px;color:var(--muted);font-size:13px;letter-spacing:1px}
@media(max-width:1300px){.container{padding:0 64px}.hero-trust{left:64px}}

/* ---------- Sections ---------- */
.section{padding:100px 0;background:var(--bg)}
.section.alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.eyebrow{font-family:Inter,system-ui,sans-serif;font-size:12px;font-weight:600;
  letter-spacing:2px;color:var(--gold);text-transform:uppercase;margin-bottom:14px}
.section-title{font-size:clamp(26px,3.1vw,42px);line-height:1.35;font-weight:700}
.section-sub{font-size:16px;color:var(--muted);margin-top:14px;line-height:1.8}
.hint{font-size:12px;color:var(--faint);margin-top:24px;line-height:1.8}
.muted{color:var(--muted)}
.gold{color:var(--gold)}
.page-head{background:var(--bg-alt);padding:80px 0 64px;border-bottom:1px solid var(--line)}
.page-head h1{font-size:clamp(32px,4vw,52px);line-height:1.3;font-weight:700;margin-bottom:20px}
.page-sub{font-size:18px;color:var(--muted);line-height:1.7}

/* ---------- Grids & cards ---------- */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid-5{grid-template-columns:repeat(5,minmax(0,1fr))}
.grid-6{grid-template-columns:repeat(6,minmax(0,1fr))}
.service-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-4px);border-color:#3A3D44;box-shadow:0 18px 40px rgba(0,0,0,.35)}
.service-card{padding:32px;display:flex;flex-direction:column;gap:16px}
.service-card .icon{width:40px;height:40px;color:var(--gold);display:block}
.service-card .icon svg{width:100%;height:100%}
.service-card h3{font-size:21px;font-weight:600}
.service-card p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- Works ---------- */
.work-card{display:flex;flex-direction:column;cursor:pointer}
.work-media{position:relative;aspect-ratio:608/320;overflow:hidden;background:var(--card-2)}
.work-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.work-overlay{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;
  gap:14px;padding:30px;background:linear-gradient(180deg,rgba(4,5,6,.86),rgba(9,7,4,.72));
  opacity:0;transition:opacity .3s}
.work-card:hover .work-overlay,.work-card:focus-within .work-overlay,.work-card.hover-demo .work-overlay{opacity:1}
.work-card:hover .work-media img,.work-card.hover-demo .work-media img{transform:scale(1.06)}
.work-overlay .badge{align-self:flex-start;position:absolute;top:20px;left:20px;
  background:var(--gold);color:#0B0C0E;font-size:11px;font-weight:600;padding:6px 12px;border-radius:3px}
.work-overlay p{font-size:16px;line-height:1.8;color:var(--text)}
.work-card.hover-demo{border-color:var(--gold);box-shadow:0 12px 32px rgba(216,178,90,.18)}
.work-info{padding:24px 26px;display:flex;flex-direction:column;gap:9px}
.work-tag{font-family:Inter,system-ui,sans-serif;font-size:11px;font-weight:600;letter-spacing:1px;color:var(--gold)}
.work-info h3{font-size:20px;font-weight:600}
.work-info p:last-child{font-size:14px;color:var(--muted);line-height:1.7}
.work-card[hidden]{display:none}

/* ---------- Team / news ---------- */
.avatar{aspect-ratio:400/300;background:var(--card-2);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;color:var(--faint);font-size:12px}
.avatar svg{width:64px;height:64px}
.avatar img{width:100%;height:100%;object-fit:cover;object-position:center 28%}
.team-info .bio{font-size:13px;color:var(--body);line-height:1.8}
.team-info{padding:24px;display:flex;flex-direction:column;gap:8px}
.team-info h3{font-size:19px;font-weight:600}
.team-info p{font-size:13px}
.news-card img{width:100%;aspect-ratio:2/1;object-fit:cover}
.news-info{padding:24px;display:flex;flex-direction:column;gap:10px}
.news-meta{font-family:Inter,system-ui,sans-serif;font-size:12px;font-weight:600;letter-spacing:1px;color:var(--gold)}
.news-info h3{font-size:18px;font-weight:600}
.news-info p:not(.news-meta){font-size:13px;color:var(--muted);line-height:1.8}
.news-list{display:flex;flex-direction:column;gap:32px}
.news-row{display:grid;grid-template-columns:320px 1fr;gap:36px;align-items:center;
  border-bottom:1px solid var(--line);padding-bottom:32px}
.news-row img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius)}
.news-row-body{display:flex;flex-direction:column;gap:12px}
.news-row-body h3{font-size:24px;font-weight:600}
.news-row-body p:not(.news-meta){font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- Forms ---------- */
.contact-split{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
.contact-intro .section-sub{margin-bottom:28px}
.contact-lines{display:flex;flex-direction:column;gap:16px;padding-top:26px;border-top:1px solid var(--line);font-size:15px;color:#D3D4D8}
.contact-lines a{color:var(--gold-soft);text-decoration:underline;text-underline-offset:3px}
.consult-form{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:40px;
  display:flex;flex-direction:column;gap:14px}
.consult-form h3{font-size:24px;font-weight:600}
.form-note{font-size:13px;color:var(--muted);margin-bottom:6px}
.field{display:flex;flex-direction:column;gap:8px}
.field>span{font-size:13px;color:#D3D4D8;font-weight:500}
.field input,.field select,.field textarea{width:100%;background:#0F1115;border:1px solid var(--line);
  border-radius:4px;color:var(--text);padding:0 16px;height:48px;font-size:14px;transition:border-color .2s}
.field textarea{height:110px;padding:14px 16px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8E9096 50%),linear-gradient(135deg,#8E9096 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:#5E6167}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold)}
.field.invalid input,.field.invalid textarea{border-color:var(--orange)}
.err{font-size:12px;color:var(--orange);font-style:normal;display:none}
.field.invalid .err{display:block}
.form-status{font-size:13px;min-height:20px;margin:0}
.form-status.ok{color:var(--gold)}
.form-status.fail{color:var(--orange)}

/* ---------- CTA / footer ---------- */
.cta-band{background:#171410;padding:72px 0;text-align:center}
.cta-band h2{font-size:clamp(24px,3vw,32px);font-weight:700}
.cta-band p{color:var(--muted);margin:14px 0 26px;font-size:15px}
.site-footer{background:#08090B;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1.1fr;gap:48px}
.footer-logo{width:200px;height:auto;margin-bottom:16px}
.footer-brand p{color:var(--muted);font-size:13px;line-height:1.9}
.footer-col{display:flex;flex-direction:column;gap:12px;font-size:13px;color:var(--muted)}
.footer-col h4{color:var(--text);font-size:14px;font-weight:600;margin-bottom:4px}
.footer-col a:hover{color:var(--gold);text-decoration:underline}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:44px;padding-top:24px;font-size:12px;color:var(--faint)}
.icp{color:var(--gold);text-decoration:underline;text-underline-offset:3px}

/* ---------- About / services / works / contact extras ---------- */
.story{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.story img{width:100%;aspect-ratio:620/440;object-fit:cover;border-radius:var(--radius)}
.story h2{font-size:28px;font-weight:600;margin-bottom:22px}
.story p{font-size:15px;color:var(--body);line-height:2;margin-bottom:18px}
.story blockquote{border-left:3px solid var(--gold);padding-left:16px;margin:28px 0 0;
  color:var(--gold-soft);font-size:16px;line-height:1.9}
.stats{margin-top:28px}
.stat{padding:28px}
.stat strong{font-family:"Playfair Display",Georgia,serif;font-size:44px;color:var(--gold);font-weight:700}
.stat h3{font-size:15px;font-weight:500;margin-top:8px}
.stat p{font-size:12px;color:var(--muted);margin-top:8px}
.logo-wall{margin-top:24px}
.logo-slot{height:80px;border:1px solid var(--line);border-radius:6px;background:var(--card);
  display:flex;align-items:center;justify-content:center;color:var(--faint);font-size:12px}
.timeline{margin-top:28px}
.timeline-item{border-top:1px solid var(--line);padding-top:24px}
.timeline-item strong{font-family:"Playfair Display",Georgia,serif;font-size:26px;color:var(--gold)}
.timeline-item p{font-size:14px;color:var(--body);line-height:1.8;margin-top:12px}
.detail-card{padding:28px;display:flex;flex-direction:column;gap:12px}
.detail-card h3{font-size:20px;font-weight:600}
.detail-card p{font-size:14px;color:var(--body);line-height:1.8}
.detail-meta{font-size:12px!important;color:var(--muted)!important;line-height:1.9!important}
.flow{margin-top:28px}
.step{padding:24px;display:flex;flex-direction:column;gap:10px}
.step strong{font-family:"Playfair Display",Georgia,serif;font-size:22px;color:var(--gold)}
.step h3{font-size:15px;font-weight:500}
.equip{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.equip img{width:100%;aspect-ratio:620/380;object-fit:cover;border-radius:var(--radius)}
.equip p{font-size:14px;color:var(--body);line-height:2;margin-top:14px}
.filters{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:36px}
.chip{background:transparent;border:1px solid var(--line);color:var(--muted);padding:10px 22px;
  border-radius:20px;font-size:14px;cursor:pointer;transition:.2s}
.chip:hover,.chip.active{background:var(--gold);border-color:var(--gold);color:#0B0C0E;font-weight:600}
.contact-aside h2{font-size:22px;font-weight:600;margin-bottom:20px}
.aside-photo{width:100%;aspect-ratio:476/280;object-fit:cover;border-radius:var(--radius);margin-top:24px}
.connect{display:grid;grid-template-columns:1fr 220px;gap:64px;align-items:center}
.connect .btn{margin:24px 0}
.connect p{font-size:14px;color:var(--body);line-height:1.9}
.connect strong{color:var(--text)}
.qr{width:220px;height:220px;object-fit:cover;background:#fff;border-radius:var(--radius);padding:8px}

/* ---------- 平板 768 - 1023 ---------- */
@media(max-width:1023px){
  .container{padding:0 40px}
  .header-inner{min-height:72px;gap:20px}
  .brand img{width:200px;height:36px}
  .nav{gap:18px}
  .nav-link{font-size:13px}
  .hero{min-height:640px}
  .hero-sub{font-size:17px}
  .hero-trust{left:40px;bottom:32px}
  .section{padding:72px 0}
  .grid-3,.grid-4,.service-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-5,.grid-6{grid-template-columns:repeat(3,minmax(0,1fr))}
  .contact-split,.story,.equip{grid-template-columns:1fr;gap:40px}
  .connect{grid-template-columns:1fr 200px;gap:32px}
  .qr{width:200px;height:200px}
  .news-row{grid-template-columns:260px 1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

/* ---------- 手机 <768 ---------- */
@media(max-width:767px){
  .container{padding:0 20px}
  .header-inner{min-height:64px;flex-wrap:wrap}
  .brand img{width:172px;height:31px}
  .header-actions{gap:10px}
  .header-actions .btn{padding:9px 14px;font-size:13px}
  .nav-toggle{display:flex}
  .nav{position:absolute;top:100%;left:0;right:0;background:#0E1014;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 16px;display:none}
  .nav.open{display:flex}
  .nav-link{padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav-link::after{display:none}
  .hero{min-height:600px;align-items:flex-start}
  .hero-inner{padding-top:64px;padding-bottom:100px}
  .hero-shade{background:linear-gradient(180deg,rgba(4,5,6,.94) 0%,rgba(4,5,6,.72) 60%,rgba(4,5,6,.88) 100%)}
  .hero h1{font-size:36px;line-height:1.35}
  .hero-sub{font-size:15px;line-height:1.85;margin-top:16px}
  .hero-eyebrow{font-size:11px;letter-spacing:.8px;margin-bottom:18px}
  .hero-actions{margin-top:26px;gap:12px}
  .hero-actions .btn{flex:1;padding:13px 16px;font-size:14px}
  .hero-trust{left:20px;right:20px;bottom:28px;font-size:11px;line-height:1.8}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px}
  .section-title{font-size:26px}
  .section-sub{font-size:14px}
  .page-head{padding:56px 0 40px}
  .page-head h1{font-size:30px}
  .page-sub{font-size:15px}
  .grid-3,.grid-4,.grid-5,.grid-6,.service-grid{grid-template-columns:1fr}
  .service-card{padding:24px}
  .work-media{aspect-ratio:16/10}
  .work-overlay{opacity:1;background:linear-gradient(180deg,rgba(4,5,6,.35),rgba(4,5,6,.88));padding:20px;justify-content:flex-end}
  .work-overlay .badge{display:none}
  .work-overlay p{font-size:13px;line-height:1.6}
  .work-card.hover-demo .work-overlay .badge{display:block}
  .work-info{padding:20px}
  .work-info h3{font-size:18px}
  .news-row{grid-template-columns:1fr;gap:16px}
  .news-row img{aspect-ratio:16/9}
  .news-row-body h3{font-size:19px}
  .consult-form{padding:24px}
  .contact-split{gap:32px}
  .connect{grid-template-columns:1fr;gap:28px;text-align:left}
  .qr{width:180px;height:180px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:10px}
  .cta-band{padding:56px 0}
  .filters{gap:8px}
  .chip{padding:8px 16px;font-size:13px}
  .equip img,.story img{aspect-ratio:16/10}
  .aside-photo{aspect-ratio:16/10}
}

/* ---------- 小屏 <480 ---------- */
@media(max-width:479px){
  .brand img{width:150px;height:27px}
  .header-actions .btn{display:none}
  .hero h1{font-size:30px}
  .hero-sub{font-size:14px}
  .hero-sub br{display:none}
  .section-title{font-size:23px}
  .stat strong{font-size:36px}
  .footer-logo{width:170px}
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}