:root{
  --teal:#574534;
  --gold:#c19a62;
  --cream:#fffcf2;
  --ink:#574534;
  --line:#d9cfbf;
  --serif:"Noto Serif TC","Songti TC","PMingLiU",serif;
  --sans:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--cream);color:var(--ink);font-family:var(--sans);line-height:1.8;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit}

/* 主視覺 */
.hero{
  min-height:100vh;min-height:100svh;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:clamp(24px,5vw,56px);
  color:#fff;
  position:relative;isolation:isolate;background:#b98f6f;
}
.hero-bg{position:absolute;inset:0;z-index:-1;background:url(assets/hero.jpg) center/cover no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(40,25,15,.45),rgba(40,25,15,0) 60%)}
.brand{position:absolute;left:49%;top:44%;translate:-50% -50%;display:inline-flex;align-items:center;gap:12px;isolation:isolate;white-space:nowrap;padding:8px 20px 8px 12px;color:var(--teal);text-decoration:none;font-size:1.25rem;letter-spacing:.08em}
.brand::before{content:"";position:absolute;inset:-6px -14px;z-index:-1;background:rgba(255,255,255,.75);border-radius:14px;filter:blur(10px)}
.brand-mark{width:48px;height:48px;object-fit:contain}
.hero-body{padding-bottom:clamp(16px,6vh,64px)}
.hero h1{font-weight:600;font-size:clamp(2.6rem,6vw,5rem);line-height:1.2;letter-spacing:.04em}
.sub{margin:20px 0 36px;font-size:clamp(1rem,2vw,1.25rem);letter-spacing:.08em}
.btn{display:inline-block;padding:14px 32px;border:1px solid #fff;color:#fff;text-decoration:none;letter-spacing:.14em;transition:background .2s,color .2s}
.btn:hover,.btn:focus-visible{background:#fff;color:var(--teal)}

/* 內容區 */
main{max-width:720px;margin:0 auto;padding:0 24px}
h2{font-family:var(--serif);font-weight:400;color:var(--teal);font-size:clamp(1.8rem,4vw,2.5rem);line-height:1.4;letter-spacing:.14em}
h2::after{content:"";display:block;width:40px;height:1px;background:var(--gold);margin-top:.9em}
.intro{padding:clamp(56px,10vw,120px) 0 clamp(32px,6vw,64px)}
.intro .story{margin-top:clamp(28px,5vw,56px);font-family:var(--serif);font-weight:300;font-size:clamp(1rem,1.8vw,1.18rem);line-height:2.2;letter-spacing:.1em}
.intro .story p+p{margin-top:2em}

.photos{display:grid;gap:clamp(16px,3vw,32px)}
.photos img{width:100%;height:auto;background:#e9e1d3;
  /* 柔邊：四周約 4% 漸層淡出 */
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent),linear-gradient(180deg,transparent,#000 4%,#000 96%,transparent);
  -webkit-mask-composite:source-in;
  mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent),linear-gradient(180deg,transparent,#000 4%,#000 96%,transparent);
  mask-composite:intersect}

.promise{padding:clamp(48px,8vw,96px) 0}
.promise ul{list-style:none;margin-top:clamp(24px,4vw,40px);max-width:480px}
.promise li{padding:22px 0;border-bottom:1px solid var(--line);font-family:var(--serif);font-weight:300;font-size:1.05rem;line-height:2;letter-spacing:.1em}
.promise li:last-child{border-bottom:0}

/* 頁尾 */
.site-footer{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;
  padding:14px clamp(24px,5vw,56px);
  background:#111;color:#fff;font-size:.8rem
}
.footer-info{display:flex;flex-direction:column;font-style:normal;gap:2px}
.site-footer nav{display:flex;flex-wrap:wrap;gap:4px 20px}
.site-footer a{text-decoration:none}
.site-footer a:hover{text-decoration:underline}

/* 電腦版：左右交錯（文字 / 照片，照片 / 文字） */
@media (min-width:900px){
  main{max-width:none;padding:0;display:grid;grid-template-columns:1fr 1fr;
    grid-template-areas:"intro p1" "p2 promise"}
  .photos{display:contents}
  .photos img{height:auto;aspect-ratio:9/10;object-fit:cover}
  .photos img:nth-child(1){grid-area:p1;margin:clamp(16px,2vw,32px) clamp(24px,3vw,48px) 0 0;width:calc(100% - clamp(24px,3vw,48px))}
  .photos img:nth-child(2){grid-area:p2;margin:clamp(40px,6vw,96px) 0 clamp(40px,6vw,96px) clamp(24px,3vw,48px);width:calc(100% - clamp(24px,3vw,48px))}
  .intro,.promise{display:flex;flex-direction:column;justify-content:space-between;padding:clamp(56px,8vw,120px) clamp(32px,7vw,120px)}
  .intro{grid-area:intro}
  .intro .story{margin-top:48px}
  .promise{grid-area:promise;justify-content:center;gap:0}
  .promise ul{max-width:none}
}

/* 進場動畫：主視覺文字依序淡入，下方區塊捲動到時淡入 */
@keyframes fade-in{from{opacity:0}to{opacity:1}}
@keyframes settle{from{transform:scale(1.06)}to{transform:scale(1)}}
.hero-bg{animation:settle 1.8s ease-out both}
.brand,.hero h1,.sub,.btn{animation:fade-in 1s ease-out both}
.brand{animation-delay:.2s}
.hero h1{animation-delay:.5s}
.sub{animation-delay:.9s}
.btn{animation:fade-in 1s ease-out 1.2s both}
.reveal{opacity:0;transform:translateY(24px);transition:opacity 1.2s ease-out,transform 1.2s ease-out}
.reveal.in{opacity:1;transform:none}
.story .reveal:nth-child(2),.promise li.reveal:nth-child(2){transition-delay:.15s}
.story .reveal:nth-child(3),.promise li.reveal:nth-child(3){transition-delay:.3s}
@media (prefers-reduced-motion:reduce){
  .hero-bg,.brand,.hero h1,.sub,.btn{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
}