:root{
  --bg:#0a0a0c;
  --bg2:#101014;
  --panel:#16161b;
  --line:rgba(255,255,255,.08);
  --text:#ececed;
  --muted:#9a9aa2;
  --gold:#c9a86a;
  --gold2:#e6c98a;
  --radius:14px;
  --max:1240px;
}

*{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth}

body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

h1,h2,h3{font-weight:700;line-height:1.25;letter-spacing:.01em}
h1{font-size:clamp(2.1rem,5vw,4rem)}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.15rem}
p{color:#cfcfd4}

.muted{color:var(--muted)}
.small{font-size:.85rem}

/* ===== 导航 ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(18px,4vw,54px);
  transition:background .35s ease,padding .35s ease,backdrop-filter .35s ease;
}
.nav.scrolled{
  background:rgba(10,10,12,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  padding-top:12px;padding-bottom:12px;
}
.logo{display:flex;flex-direction:column;font-size:1.12rem;font-weight:700;letter-spacing:.06em;line-height:1.2}
.logo em{font-style:normal;font-size:.62rem;letter-spacing:.28em;color:var(--gold);font-weight:500;margin-top:2px}

.nav nav{display:flex;gap:30px;align-items:center}
.nav nav a{font-size:.92rem;color:#c8c8cf;position:relative;padding:6px 0;transition:color .25s}
.nav nav a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--gold);transition:width .3s}
.nav nav a:hover,.nav nav a.active{color:#fff}
.nav nav a:hover::after,.nav nav a.active::after{width:100%}

.menu-btn{display:none;background:none;border:1px solid var(--line);color:#fff;font-size:1.1rem;border-radius:8px;padding:4px 12px;cursor:pointer}

/* ===== 首屏 ===== */
.hero{
  position:relative;min-height:100vh;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;
  padding:120px 22px 80px;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 500px at 20% 15%,rgba(201,168,106,.16),transparent 62%),
    radial-gradient(800px 500px at 82% 78%,rgba(90,120,200,.14),transparent 62%),
    linear-gradient(160deg,#0b0b0e 0%,#131318 48%,#0a0a0c 100%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 45%,#000 8%,transparent 72%);
}
.hero-inner{position:relative;z-index:2;max-width:900px}
.eyebrow{font-size:.72rem;letter-spacing:.34em;color:var(--gold);margin-bottom:16px;text-transform:uppercase;font-weight:500}
.hero h1{font-size:clamp(2.3rem,6vw,4.6rem);letter-spacing:.02em;margin-bottom:22px}
.grad{background:linear-gradient(100deg,var(--gold) 0%,var(--gold2) 45%,#fff2d8 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{color:#b9b9c2;letter-spacing:.16em;font-size:.95rem;margin-bottom:38px}
.cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

.btn{
  display:inline-block;padding:14px 34px;border-radius:999px;font-size:.94rem;
  border:1px solid transparent;cursor:pointer;transition:transform .25s ease,box-shadow .3s ease,background .3s ease,color .3s;
}
.btn.primary{background:linear-gradient(100deg,var(--gold),var(--gold2));color:#15130d;font-weight:600}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px -12px rgba(201,168,106,.7)}
.btn.ghost{border-color:rgba(255,255,255,.24);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.08);transform:translateY(-2px)}

.scroll-hint{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);font-size:.62rem;letter-spacing:.32em;color:var(--muted);animation:float 2.4s ease-in-out infinite}
@keyframes float{0%,100%{transform:translate(-50%,0);opacity:.55}50%{transform:translate(-50%,8px);opacity:1}}

/* ===== 区块 ===== */
.section{max-width:var(--max);margin:0 auto;padding:clamp(64px,9vw,116px) clamp(18px,4vw,48px)}
.sec-head{margin-bottom:52px;max-width:760px}
.sec-head .lead{margin-top:12px}
.lead{color:var(--muted);font-size:1.02rem}
.dark-strip{max-width:none;background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.dark-strip>*{max-width:var(--max);margin-left:auto;margin-right:auto}

/* ===== 卡片 ===== */
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:22px}
.card,.step{
  background:linear-gradient(170deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  transition:transform .3s ease,border-color .3s ease,background .3s ease;
}
.card:hover,.step:hover{transform:translateY(-6px);border-color:rgba(201,168,106,.4)}
.card-num,.step b{display:block;font-size:.78rem;letter-spacing:.24em;color:var(--gold);margin-bottom:14px;font-weight:600}
.card h3,.step h3{margin-bottom:10px}
.card p,.step p{font-size:.93rem;color:var(--muted)}

/* ===== 作品入口 ===== */
.works{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.work{position:relative;display:block;height:340px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.work-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.02);transition:transform .7s cubic-bezier(.2,.8,.2,1)}
.work-video{background-image:linear-gradient(140deg,#1b2233,#0d1017),radial-gradient(600px 300px at 30% 30%,rgba(201,168,106,.28),transparent 70%)}
.work-photo{background-image:linear-gradient(140deg,#2a2030,#0d0b12),radial-gradient(600px 300px at 70% 40%,rgba(120,150,255,.24),transparent 70%)}
.work:hover .work-bg{transform:scale(1.1)}
.work-text{position:absolute;left:0;right:0;bottom:0;padding:28px;background:linear-gradient(to top,rgba(0,0,0,.78),transparent)}
.work-text h3{font-size:1.35rem;margin-bottom:6px}
.work-text span{font-size:.86rem;color:var(--gold2)}

/* ===== 数据 ===== */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:22px;text-align:center}
.stat b{display:block;font-size:clamp(2rem,4vw,3rem);color:#fff;font-weight:700;letter-spacing:.02em}
.stat span{font-size:.82rem;letter-spacing:.16em;color:var(--muted)}

/* ===== 行动条 ===== */
.cta-band{
  padding:clamp(58px,8vw,96px) 22px;text-align:center;
  background:linear-gradient(120deg,rgba(201,168,106,.1),rgba(10,10,12,0) 60%),var(--bg2);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band h2{margin-bottom:12px}
.cta-band p{color:var(--muted);margin-bottom:30px}

/* ===== 页头 ===== */
.page-head{padding:170px clamp(18px,4vw,48px) 40px;max-width:var(--max);margin:0 auto;text-align:center}
.page-head h1{margin-bottom:14px}

/* ===== 使用说明 ===== */
.note{
  white-space:pre-wrap;font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:.8rem;line-height:1.9;color:#8f8f98;
  background:rgba(255,255,255,.03);border:1px dashed var(--line);border-left:3px solid var(--gold);
  border-radius:10px;padding:16px 20px;margin-bottom:44px;
}

/* ===== 视频网格 ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(310px,1fr));gap:26px}
.video-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel);cursor:pointer;transition:transform .35s ease,border-color .35s}
.video-card:hover{transform:translateY(-6px);border-color:rgba(201,168,106,.45)}
.thumb{position:relative;padding-top:56.25%;background-size:cover;background-position:center;background-color:#1a1a20}
.thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.5),transparent 60%)}
.play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;
  width:62px;height:62px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(201,168,106,.92);color:#15130d;font-size:1.1rem;padding-left:4px;
  transition:transform .3s ease,background .3s;
}
.video-card:hover .play{transform:translate(-50%,-50%) scale(1.12);background:var(--gold2)}
.vmeta{padding:20px 22px 24px}
.tag{display:inline-block;font-size:.7rem;letter-spacing:.16em;color:var(--gold);border:1px solid rgba(201,168,106,.35);border-radius:999px;padding:3px 12px;margin-bottom:12px}
.vmeta h3{margin-bottom:8px;font-size:1.06rem}
.vmeta p{font-size:.88rem;color:var(--muted)}

/* ===== 照片瀑布流 ===== */
.photo-filters{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px}
.chip{background:transparent;border:1px solid var(--line);color:#c2c2ca;padding:8px 20px;border-radius:999px;cursor:pointer;font-size:.86rem;transition:all .28s}
.chip:hover{border-color:rgba(201,168,106,.5);color:#fff}
.chip.active{background:linear-gradient(100deg,var(--gold),var(--gold2));border-color:transparent;color:#15130d;font-weight:600}

.masonry{columns:3;column-gap:20px}
.photo{break-inside:avoid;margin-bottom:20px;border-radius:12px;overflow:hidden;border:1px solid var(--line);position:relative;cursor:pointer;background:#15151a}
.photo img{width:100%;transition:transform .6s cubic-bezier(.2,.8,.2,1);min-height:180px;object-fit:cover}
.photo:hover img{transform:scale(1.06)}
.photo figcaption{position:absolute;left:0;right:0;bottom:0;padding:16px;font-size:.82rem;color:#e8e8ee;background:linear-gradient(to top,rgba(0,0,0,.82),transparent);opacity:0;transform:translateY(8px);transition:all .35s}
.photo:hover figcaption{opacity:1;transform:translateY(0)}

/* ===== 两栏 / 关于 ===== */
.two-col{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.two-col h2{margin-bottom:20px}
.two-col p{margin-bottom:16px;color:var(--muted)}
.about-visual{
  aspect-ratio:4/5;border-radius:var(--radius);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;overflow:hidden;
  background:linear-gradient(150deg,#1a2233,#0c0c11 65%),radial-gradient(500px 400px at 70% 25%,rgba(201,168,106,.3),transparent 68%);
}
.about-visual span{font-size:clamp(2rem,5vw,3.4rem);font-weight:700;letter-spacing:.22em;color:transparent;background:linear-gradient(100deg,var(--gold),#fff2d8);-webkit-background-clip:text;background-clip:text;opacity:.9}

/* ===== 联系 ===== */
.contact-col{align-items:start}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:2px}
.contact-list li{display:flex;flex-direction:column;gap:4px;padding:18px 0;border-bottom:1px solid var(--line)}
.contact-list span{font-size:.76rem;letter-spacing:.2em;color:var(--gold)}
.contact-list b{font-weight:500;color:#e4e4ea}

.contact-form{display:flex;flex-direction:column;gap:16px}
.contact-form label{display:flex;flex-direction:column;gap:8px;font-size:.85rem;color:var(--muted)}
.contact-form input,.contact-form select,.contact-form textarea{
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:10px;
  padding:12px 15px;color:#fff;font-size:.94rem;font-family:inherit;transition:border-color .25s,background .25s;outline:none;
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:rgba(201,168,106,.6);background:rgba(255,255,255,.06)}
.contact-form textarea{resize:vertical}
.contact-form .btn{align-self:flex-start;margin-top:6px}
.form-tip{font-size:.85rem;color:var(--gold2);min-height:1.2em}
.map-placeholder{
  height:320px;border-radius:var(--radius);border:1px dashed var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.9rem;
  background:linear-gradient(140deg,rgba(255,255,255,.03),rgba(255,255,255,0));
}

/* ===== 灯箱 ===== */
.lightbox{
  position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;
  background:rgba(5,5,7,.94);backdrop-filter:blur(8px);padding:24px;
}
.lightbox.open{display:flex;animation:fade .3s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lb-body{width:min(1080px,96vw);max-height:90vh;display:flex;flex-direction:column;gap:14px}
.lb-body video{width:100%;max-height:74vh;background:#000;border-radius:12px;border:1px solid var(--line)}
.photo-lb img{width:100%;max-height:82vh;object-fit:contain;border-radius:12px}
.lb-info h3{margin-bottom:4px}
.lb-info p{font-size:.9rem;color:var(--muted)}
.lb-close{position:absolute;top:22px;right:26px;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.08);border:1px solid var(--line);color:#fff;font-size:1rem;cursor:pointer;transition:background .25s}
.lb-close:hover{background:rgba(255,255,255,.18)}

/* ===== 页脚 ===== */
.footer{background:#08080a;border-top:1px solid var(--line);padding:56px clamp(18px,4vw,48px) 28px}
.foot-inner{max-width:var(--max);margin:0 auto;display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;align-items:flex-start}
.foot-links{display:flex;gap:26px;flex-wrap:wrap}
.foot-links a{font-size:.9rem;color:#b5b5bd;transition:color .25s}
.foot-links a:hover{color:var(--gold2)}
.copyright{max-width:var(--max);margin:36px auto 0;padding-top:22px;border-top:1px solid var(--line);font-size:.8rem;color:#6f6f78;text-align:center}

/* ===== 入场动画 ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.2,.8,.2,1),transform .8s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:960px){
  .masonry{columns:2}
  .two-col{grid-template-columns:1fr;gap:36px}
}
@media (max-width:720px){
  .menu-btn{display:block}
  .nav nav{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(10,10,12,.97);border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .4s ease;
  }
  .nav nav.open{max-height:340px}
  .nav nav a{padding:15px clamp(18px,4vw,48px);width:100%;border-bottom:1px solid var(--line)}
  .nav nav a::after{display:none}
  .masonry{columns:1}
  .hero{min-height:92vh}
  .work{height:260px}
  .page-head{padding-top:130px}
}