:root{
  --bg:#0a1114; --surface:#101a1e; --text:#e9e5dc; --muted:#98a3a4;
  --accent:#8fb5b3; --line:rgba(233,229,220,.14);
  --serif:"Noto Serif TC","Songti TC","PMingLiU",serif;
  --sans:"Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;
  --nav-h:60px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}
body{background:var(--bg);color:var(--text);font:300 1rem/1.8 var(--sans);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.3}

/* 導覽列 */
.nav{position:fixed;inset:0 0 auto 0;height:var(--nav-h);z-index:50;display:flex;align-items:center;justify-content:space-between;padding:0 1.25rem;background:rgba(10,17,20,.85);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav__brand{font-family:var(--serif);font-weight:700;font-size:1.15rem;letter-spacing:.12em}
.nav__menu{position:absolute;top:var(--nav-h);left:0;right:0;display:none;flex-direction:column;background:var(--bg);border-bottom:1px solid var(--line)}
.nav__menu.open{display:flex}
.nav__menu a{padding:1rem 1.25rem;border-top:1px solid var(--line);color:var(--muted)}
.nav__menu a:hover{color:var(--text)}
.nav__toggle{width:44px;height:44px;background:none;border:0;cursor:pointer;display:grid;align-content:center;gap:7px;justify-items:center}
.nav__toggle span{display:block;width:24px;height:1.5px;background:var(--text);transition:transform .25s}
.nav__toggle[aria-expanded=true] span:first-child{transform:translateY(4.25px) rotate(45deg)}
.nav__toggle[aria-expanded=true] span:last-child{transform:translateY(-4.25px) rotate(-45deg)}

/* 首頁主視覺：上下黑邊如電影寬銀幕，雨絲是整頁唯一的動態 */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:6rem 1.25rem 4rem;overflow:hidden;border-block:clamp(1rem,5vh,3.5rem) solid #000}
.hero__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.75}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,var(--bg) 0%,rgba(10,17,20,.15) 60%)}
.hero__rain{position:absolute;inset:0;z-index:1;opacity:.5;background:repeating-linear-gradient(100deg,transparent 0 46px,rgba(233,229,220,.07) 47px,transparent 48px);background-size:240px 240px;animation:rain 7s linear infinite}
@keyframes rain{to{background-position:-60px 240px}}
.hero__inner{position:relative;z-index:2;max-width:46rem;animation:rise 1.2s ease-out both}
@keyframes rise{from{opacity:0;transform:translateY(14px)}}
.hero__title{font-size:clamp(2.8rem,12vw,6rem);letter-spacing:.14em}
.hero__tag{margin:1rem 0 2rem;color:var(--muted);font-size:1.05rem;max-width:30rem}
.btn{display:inline-block;padding:.8rem 2rem;border:1px solid var(--accent);color:var(--accent);background:none;font:400 1rem var(--sans);letter-spacing:.2em;cursor:pointer;transition:background .25s,color .25s}
.btn:hover{background:var(--accent);color:var(--bg)}

/* 區塊 */
.section{padding:4.5rem 1.25rem;max-width:1200px;margin:0 auto}
.section--alt{max-width:none;background:var(--surface)}
.section--alt>*{max-width:1200px;margin-inline:auto}
.section h2{font-size:clamp(1.6rem,5vw,2.2rem);letter-spacing:.2em;margin-bottom:2rem}
.reveal{opacity:0;transform:translateY(10px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}

/* 作品 */
.filters{display:flex;gap:.5rem;overflow-x:auto;padding-bottom:.75rem;margin-bottom:1.5rem;scrollbar-width:none}
.filters button{flex:none;padding:.4rem 1rem;background:none;border:1px solid var(--line);color:var(--muted);font:400 .9rem var(--sans);cursor:pointer;transition:.2s}
.filters button:hover{color:var(--text)}
.filters button[aria-pressed=true]{border-color:var(--accent);color:var(--accent)}
.grid{display:grid;gap:1.5rem;grid-template-columns:1fr}
.card{display:block;width:100%;text-align:left;background:none;border:0;color:inherit;font:inherit;cursor:pointer}
.card__img{aspect-ratio:16/9;overflow:hidden;background:var(--surface);position:relative}
.card__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease,opacity .3s}
.card:hover .card__img img{transform:scale(1.04);opacity:.85}
.card__img::after{content:"▶";position:absolute;inset:0;display:grid;place-items:center;font-size:1.6rem;color:var(--text);opacity:0;transition:opacity .3s}
.card:hover .card__img::after,.card:focus-visible .card__img::after{opacity:.9}
.card h3{font-size:1.1rem;margin:.8rem 0 .2rem}
.meta{color:var(--muted);font-size:.88rem}
.empty{color:var(--muted)}

/* 團隊 */
.team{display:grid;gap:2rem 1.25rem;grid-template-columns:repeat(2,1fr)}
.member img{aspect-ratio:4/5;object-fit:cover;width:100%;margin-bottom:.8rem}
.member h3{font-size:1.05rem}
.member .role{color:var(--accent);font-size:.9rem}
.member p:last-child{color:var(--muted);font-size:.9rem;margin-top:.3rem;line-height:1.6}

/* 導演 */
.director{display:grid;gap:2rem}
.director img{width:100%;max-width:380px;aspect-ratio:4/5;object-fit:cover}
.director h3{font-size:1.5rem;margin-bottom:.8rem}
.director h4{font:500 1rem var(--sans);color:var(--accent);margin:1.5rem 0 .4rem}
.director li{color:var(--muted);padding-left:1rem;position:relative}
.director li::before{content:"";position:absolute;left:0;top:.9em;width:.4rem;height:1px;background:var(--accent)}
.director blockquote{font-family:var(--serif);border-left:2px solid var(--accent);padding-left:1rem;color:var(--text)}

/* 聯絡 */
.contact{display:grid;gap:2.5rem}
.contact__info li{margin-bottom:.8rem;color:var(--muted)}
.contact__info b{display:block;color:var(--text);font-weight:500}
.form{display:grid;gap:1rem}
.form label{display:grid;gap:.35rem;font-size:.9rem;color:var(--muted)}
.form input,.form select,.form textarea{width:100%;padding:.7rem .8rem;background:var(--bg);border:1px solid var(--line);color:var(--text);font:300 1rem var(--sans);border-radius:0}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--accent)}
.form [aria-invalid=true]{border-color:#c98a7a}
.form .btn{justify-self:start}
.form__msg{min-height:1.6em;color:var(--accent);font-size:.92rem}

/* 頁尾 */
.footer{padding:2.5rem 1.25rem;text-align:center;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}
.social{display:flex;justify-content:center;gap:.8rem;margin-bottom:1rem}
.social a{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;transition:.2s}
.social a:hover{border-color:var(--accent);color:var(--accent)}
.social svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

/* 彈窗 */
.modal{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.88);display:grid;place-items:center;padding:1rem;overflow-y:auto;animation:fade .25s ease}
.modal[hidden]{display:none}
@keyframes fade{from{opacity:0}}
.modal__box{position:relative;width:min(900px,100%);background:var(--surface);padding:3rem 1.25rem 1.5rem}
.modal__close{position:absolute;top:.4rem;right:.4rem;width:44px;height:44px;background:none;border:0;color:var(--text);font-size:1.2rem;cursor:pointer}
.modal__video{aspect-ratio:16/9;background:#000;display:grid;place-items:center;color:var(--muted);text-align:center;padding:1rem;margin-bottom:1rem}
.modal__video iframe{width:100%;height:100%;border:0}
.modal h3{font-size:1.3rem}
.modal .meta{margin:.2rem 0 .8rem}

/* 平板／桌機 */
@media(min-width:700px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .team{grid-template-columns:repeat(4,1fr)}
  .director{grid-template-columns:minmax(240px,380px) 1fr;gap:3rem}
  .contact{grid-template-columns:1fr 1.3fr;gap:4rem}
  .modal__box{padding:3rem 2rem 2rem}
}
@media(min-width:900px){
  .nav{padding:0 3rem}
  .nav__toggle{display:none}
  .nav__menu{position:static;display:flex;flex-direction:row;background:none;border:0;gap:2rem}
  .nav__menu a{padding:0;border:0}
  .grid{grid-template-columns:repeat(3,1fr)}
  .section{padding:6.5rem 3rem}
  .hero{padding-inline:3rem}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}