/* ====== AURELIA · Radium 风 — 浅色 / 舒服 / 作品当主角 ====== */
:root{
  --bg:#F5F4F1; --surface:#FFFFFF; --ink:#18181B; --ink-2:#3A3A40; --muted:#76757D;
  --accent:#5D5FEF; --accent-d:#4B4DE0; --accent-soft:rgba(93,95,239,.09);
  --line:#E8E6E0; --line-2:#DEDCD4;
  --sh:0 4px 22px rgba(22,22,32,.06); --sh-lg:0 18px 48px rgba(22,22,32,.13);
  --sans:"Inter",system-ui,-apple-system,sans-serif;
  --disp:"Space Grotesk","Inter",sans-serif;
  --r:16px; --ease:cubic-bezier(.22,1,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-weight:400;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,video{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer}
.center{text-align:center}

.scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:9500;transition:width .1s linear}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--ink);color:#fff;
  padding:11px 20px;border:none;border-radius:40px;font-size:13.5px;font-weight:500;letter-spacing:.01em;transition:transform .4s var(--ease),background .3s,box-shadow .4s}
.btn:hover{transform:translateY(-2px);background:#000;box-shadow:0 10px 24px rgba(22,22,32,.18)}
.btn-lg{padding:15px 28px;font-size:15px}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line-2)}
.btn-ghost:hover{background:var(--surface);box-shadow:var(--sh)}
.btn-full{width:100%}
.btn[data-accent],.price.feat .btn-buy{background:var(--accent)}
.price.feat .btn-buy:hover{background:var(--accent-d)}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:8000;display:flex;align-items:center;justify-content:space-between;
  padding:20px clamp(20px,5vw,56px);transition:padding .5s var(--ease),background .5s,box-shadow .5s,backdrop-filter .5s}
.nav.shrink{padding:13px clamp(20px,5vw,56px);background:rgba(245,244,241,.82);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line)}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--disp);font-weight:600;font-size:19px;letter-spacing:-.01em}
.logo-mark{width:16px;height:16px;border-radius:5px;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.nav-right{display:flex;align-items:center;gap:clamp(12px,2vw,26px)}
.nav-link{font-size:14px;color:var(--ink-2);transition:color .3s}
.nav-link:hover{color:var(--accent)}
.lang{display:flex;gap:2px;background:var(--surface);border:1px solid var(--line);border-radius:40px;padding:3px}
.lang button{background:none;border:none;color:var(--muted);font-size:12px;padding:5px 10px;border-radius:40px;transition:.3s}
.lang button.active{background:var(--ink);color:#fff}
@media(max-width:740px){.nav-link{display:none}}

/* hero */
.hero{padding:160px clamp(20px,5vw,56px) 60px;max-width:1240px;margin:0 auto;text-align:center}
.eyebrow{font-size:13px;letter-spacing:.04em;color:var(--accent);font-weight:500;margin-bottom:20px}
.hero-title{font-family:var(--disp);font-weight:600;font-size:clamp(38px,6.6vw,80px);line-height:1.04;letter-spacing:-.025em;max-width:14ch;margin:0 auto}
.hero-sub{max-width:560px;margin:26px auto 0;color:var(--muted);font-size:clamp(15px,1.8vw,18px)}
.hero-actions{display:flex;gap:14px;justify-content:center;margin-top:38px;flex-wrap:wrap}
.hero-strip{display:flex;gap:16px;margin-top:64px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.hero-strip img{height:clamp(150px,20vw,240px);width:auto;border-radius:12px;object-fit:cover;flex:0 0 auto;box-shadow:var(--sh)}

/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* headings */
.h2{font-family:var(--disp);font-weight:600;font-size:clamp(28px,4.4vw,50px);line-height:1.08;letter-spacing:-.02em}
.sub{color:var(--muted);font-size:15px;margin-top:12px}

/* work */
.work{max-width:1320px;margin:0 auto;padding:80px clamp(20px,5vw,56px)}
.work-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.filters{display:flex;gap:8px;flex-wrap:wrap}
.filters button{background:var(--surface);border:1px solid var(--line);color:var(--ink-2);font-size:13px;padding:9px 16px;border-radius:40px;transition:.3s var(--ease)}
.filters button:hover{border-color:var(--accent);color:var(--accent)}
.filters button.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.grid{columns:3;column-gap:18px}
@media(max-width:980px){.grid{columns:2}}
@media(max-width:560px){.grid{columns:1}}
.card{break-inside:avoid;margin-bottom:18px;border-radius:14px;overflow:hidden;background:var(--surface);box-shadow:var(--sh);
  position:relative;cursor:pointer;transition:transform .5s var(--ease),box-shadow .5s var(--ease);opacity:0;transform:translateY(20px)}
.card.in{opacity:1;transform:none}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-lg)}
.card img,.card video{width:100%;display:block;transition:transform 1s var(--ease)}
.card:hover img,.card:hover video{transform:scale(1.04)}
.card-tag{position:absolute;left:12px;bottom:12px;background:rgba(255,255,255,.92);backdrop-filter:blur(6px);color:var(--ink);
  font-size:11.5px;font-weight:500;padding:6px 12px;border-radius:40px;opacity:0;transform:translateY(8px);transition:.4s var(--ease)}
.card:hover .card-tag{opacity:1;transform:none}
.card-play{position:absolute;top:12px;right:12px;width:30px;height:30px;border-radius:50%;background:rgba(24,24,27,.6);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px}
.grid-count{text-align:center;color:var(--muted);font-size:13px;margin-top:30px}

/* featured */
.featured{max-width:1320px;margin:40px auto;padding:0 clamp(20px,5vw,56px);display:grid;grid-template-columns:1.3fr 1fr;gap:44px;align-items:center}
.featured-media{border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-lg);aspect-ratio:16/10;background:var(--ink)}
.featured-media video{width:100%;height:100%;object-fit:cover}
.featured-copy .eyebrow{margin-bottom:14px}
.featured-copy .sub{margin:14px 0 26px;font-size:16px;max-width:40ch}
@media(max-width:860px){.featured{grid-template-columns:1fr;gap:26px}}

/* studio */
.studio{max-width:1000px;margin:0 auto;padding:100px clamp(20px,5vw,56px)}
.studio-lead{max-width:560px;margin:18px auto 0;color:var(--muted);font-size:17px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:60px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:30px 22px;text-align:center}
.stat-n{display:block;font-family:var(--disp);font-weight:600;font-size:clamp(30px,4vw,46px);color:var(--accent);letter-spacing:-.02em}
.stat-l{display:block;color:var(--muted);font-size:13px;margin-top:8px}
@media(max-width:680px){.stats{grid-template-columns:repeat(2,1fr)}}

/* pricing */
.pricing{max-width:1080px;margin:0 auto;padding:80px clamp(20px,5vw,56px) 120px}
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.price{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:38px 30px;position:relative;transition:transform .5s var(--ease),box-shadow .5s}
.price:hover{transform:translateY(-6px);box-shadow:var(--sh-lg)}
.price.feat{border-color:var(--accent);box-shadow:0 10px 40px rgba(93,95,239,.16)}
.badge{position:absolute;top:-11px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;font-size:11px;font-weight:500;padding:5px 14px;border-radius:40px}
.price h3{font-family:var(--disp);font-weight:600;font-size:20px}
.amt{font-family:var(--disp);font-weight:600;font-size:46px;letter-spacing:-.02em;margin:10px 0 22px}
.price ul{list-style:none;display:flex;flex-direction:column;gap:11px;margin-bottom:28px}
.price li{color:var(--ink-2);font-size:14px;padding-left:24px;position:relative}
.price li::before{content:"";position:absolute;left:0;top:8px;width:13px;height:8px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.pay{text-align:center;color:var(--muted);font-size:13px;margin-top:40px}
@media(max-width:820px){.prices{grid-template-columns:1fr;max-width:400px;margin-left:auto;margin-right:auto}}

/* footer */
.footer{border-top:1px solid var(--line);max-width:1320px;margin:0 auto;padding:50px clamp(20px,5vw,56px)}
.footer-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px;margin-bottom:24px}
.footer-langs{display:flex;gap:8px;flex-wrap:wrap}
.footer-langs button{background:none;border:1px solid var(--line);color:var(--muted);padding:8px 16px;border-radius:40px;font-size:12.5px;transition:.3s}
.footer-langs button:hover{border-color:var(--accent);color:var(--accent)}
.footer-fine{color:var(--muted);font-size:12.5px}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:9700;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .4s var(--ease),visibility .4s}
.lightbox.open{opacity:1;visibility:visible}
.lb-bg{position:absolute;inset:0;background:rgba(20,20,28,.84);backdrop-filter:blur(8px)}
.lb-x{position:absolute;top:22px;right:26px;z-index:2;background:rgba(255,255,255,.12);border:none;color:#fff;width:42px;height:42px;border-radius:50%;font-size:24px}
.lb-stage{position:relative;z-index:1;max-width:90vw;max-height:86vh}
.lb-stage img,.lb-stage video{max-width:90vw;max-height:86vh;border-radius:10px;box-shadow:0 30px 80px rgba(0,0,0,.5)}

/* 购买模态 */
.modal{position:fixed;inset:0;z-index:9700;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:.4s var(--ease)}
.modal.open{opacity:1;visibility:visible}
.modal-bg{position:absolute;inset:0;background:rgba(20,20,28,.6);backdrop-filter:blur(6px)}
.modal-card{position:relative;z-index:1;background:var(--surface);border-radius:18px;padding:44px 40px;max-width:420px;width:92%;text-align:center;box-shadow:var(--sh-lg);transform:translateY(20px) scale(.98);transition:transform .5s var(--ease)}
.modal.open .modal-card{transform:none}
.modal-x{position:absolute;top:14px;right:18px;background:none;border:none;color:var(--muted);font-size:24px}
.modal-card h3{font-family:var(--disp);font-weight:600;font-size:24px;margin-bottom:4px}
.modal-amt{font-family:var(--disp);font-weight:600;font-size:42px;color:var(--accent);margin-bottom:14px}
.modal-note{color:var(--muted);font-size:13px;margin-bottom:22px}
.modal-pays{display:flex;flex-wrap:wrap;gap:7px;justify-content:center;margin-bottom:24px}
.modal-pays span{font-size:11px;color:var(--ink-2);border:1px solid var(--line);border-radius:40px;padding:6px 12px}

@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal,.card{opacity:1;transform:none}}