/* ===== 自然穀倉 Nature Granary — Stylesheet ===== */
:root{
  --bg:#faf7f1;        /* 米白 */
  --bg-soft:#f3ece0;   /* 燕麥 */
  --ink:#2c2a25;       /* 深墨 */
  --ink-soft:#6b675e;
  --green:#3a5a40;     /* 森林綠 */
  --green-d:#2f4733;
  --amber:#c98a3c;     /* 琥珀 */
  --amber-l:#e0b777;
  --terra:#b5673f;     /* 陶土 */
  --line:#e6ddcc;
  --white:#fff;
  --shadow:0 12px 40px rgba(58,90,64,.12);
  --radius:18px;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans TC",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);
  line-height:1.7;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.brand-text b{font-family:"Noto Serif TC",serif}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.eyebrow{color:var(--amber);font-weight:700;letter-spacing:.22em;font-size:.74rem;margin-bottom:.6rem}
em{font-style:normal;color:var(--amber);}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;
  padding:.85rem 1.7rem;border-radius:50px;font-weight:700;font-size:.96rem;
  cursor:pointer;border:none;transition:.2s;font-family:inherit;white-space:nowrap}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 8px 20px rgba(58,90,64,.25)}
.btn-primary:hover{background:var(--green-d);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--green);border:1.6px solid var(--green)}
.btn-ghost:hover{background:var(--green);color:#fff}
.btn.full{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* topbar */
.topbar{background:var(--green-d);color:#f1e9d6;text-align:center;
  font-size:.8rem;padding:.5rem 1rem;letter-spacing:.03em}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(250,247,241,.9);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:.3s}
.nav.shrink{box-shadow:0 4px 20px rgba(0,0,0,.06)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:.8rem 1.5rem;
  display:flex;align-items:center;gap:2rem}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--green)}
.brand-mark{display:grid;place-items:center}
.brand-text{display:flex;flex-direction:column;line-height:1}
.brand-text b{font-size:1.25rem;letter-spacing:.04em}
.brand-text small{font-size:.58rem;letter-spacing:.32em;color:var(--ink-soft);margin-top:3px}
.brand-text.light b,.brand-text.light small{color:#f3ece0}
.nav-links{display:flex;gap:1.6rem;margin-left:auto;font-weight:500;font-size:.95rem}
.nav-links a{color:var(--ink-soft);transition:.2s}
.nav-links a:hover{color:var(--green)}
.member-link{font-size:.9rem;font-weight:500;color:var(--green);display:flex;align-items:center;gap:.35rem;white-space:nowrap}
.member-link::before{content:"👤";font-size:.95rem}
.member-link:hover{color:var(--amber)}
.cart-btn{position:relative;background:none;border:none;cursor:pointer;color:var(--green);padding:.3rem;margin-left:.4rem}
.pts-redeem{background:var(--bg-soft);border-radius:12px;padding:.9rem 1.1rem;margin:.4rem 0 0;font-size:.9rem}
.pts-redeem .pts-row{display:flex;align-items:center;justify-content:space-between;gap:.6rem}
.pts-redeem input{width:90px;margin-top:0;padding:.45rem .6rem;border:1.4px solid var(--line);border-radius:8px;font-size:.9rem}
.pts-redeem .bal{color:var(--green);font-weight:700}
.pts-redeem .hint{font-size:.76rem;color:var(--ink-soft);margin-top:.4rem}
.cart-count{position:absolute;top:-4px;right:-6px;background:var(--terra);color:#fff;
  font-size:.68rem;font-weight:700;min-width:18px;height:18px;border-radius:10px;
  display:grid;place-items:center;padding:0 4px}

/* hero */
.hero{max-width:var(--maxw);margin:0 auto;padding:4rem 1.5rem 3rem;
  display:grid;grid-template-columns:1.1fr .9fr;gap:2rem;align-items:center}
.hero-text h1{font-size:clamp(2.4rem,5vw,3.7rem);line-height:1.18;font-weight:900;margin:.4rem 0 1rem}
.lead{color:var(--ink-soft);font-size:1.06rem;margin-bottom:1.8rem}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap}
.hero-badges{list-style:none;display:flex;gap:2rem;margin-top:2.4rem;padding-top:1.6rem;border-top:1px solid var(--line)}
.hero-badges li{font-size:.85rem;color:var(--ink-soft)}
.hero-badges b{display:block;font-family:"Noto Serif TC";font-size:1.6rem;color:var(--green)}

/* hero art – grain bowl */
.hero-art{display:grid;place-items:center;height:380px}
.bowl{position:relative;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle at 38% 32%,#fff,var(--bg-soft) 60%,#e7dcc6);
  box-shadow:var(--shadow),inset 0 -20px 40px rgba(180,150,100,.18)}
.bowl::after{content:"";position:absolute;inset:18% 18% auto 18%;height:42%;
  border-radius:50%;background:linear-gradient(160deg,var(--amber-l),var(--amber));opacity:.9}
.grain{position:absolute;border-radius:50% 50% 50% 50%/60% 60% 40% 40%;animation:float 5s ease-in-out infinite}
.g1{width:46px;height:46px;background:var(--terra);top:26%;left:34%;animation-delay:.2s}
.g2{width:34px;height:34px;background:var(--green);top:34%;left:56%;animation-delay:.9s}
.g3{width:28px;height:28px;background:var(--amber);top:46%;left:46%;animation-delay:1.5s}
.leaf{position:absolute;width:60px;height:34px;background:var(--green);
  border-radius:0 100% 0 100%;animation:float 6s ease-in-out infinite}
.l1{top:8%;right:8%;transform:rotate(20deg)}
.l2{bottom:6%;left:4%;transform:rotate(-150deg);background:var(--green-d)}
@keyframes float{0%,100%{transform:translateY(0) rotate(var(--r,0))}50%{transform:translateY(-12px)}}

/* features */
.features{max-width:var(--maxw);margin:1rem auto 0;padding:0 1.5rem;
  display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.feat{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.4rem;text-align:center}
.feat span{font-size:1.8rem}
.feat h3{font-size:1.05rem;margin:.4rem 0 .2rem}
.feat p{font-size:.85rem;color:var(--ink-soft)}

/* sections */
.section{max-width:var(--maxw);margin:0 auto;padding:5rem 1.5rem}
.section-head{text-align:center;max-width:620px;margin:0 auto 2.5rem}
.section-head h2{font-size:clamp(1.9rem,3.5vw,2.6rem);font-weight:900}
.section-sub{color:var(--ink-soft);margin-top:.6rem}

/* filters */
.filters{display:flex;gap:.6rem;justify-content:center;flex-wrap:wrap;margin-bottom:2.4rem}
.chip{background:var(--white);border:1.4px solid var(--line);color:var(--ink-soft);
  padding:.5rem 1.2rem;border-radius:50px;font-weight:500;cursor:pointer;transition:.2s;font-family:inherit;font-size:.9rem}
.chip:hover{border-color:var(--amber)}
.chip.active{background:var(--green);color:#fff;border-color:var(--green)}

/* product grid */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card-img{height:170px;position:relative;display:grid;place-items:center;overflow:hidden}
.card-img .pkg{width:96px;height:120px;border-radius:14px 14px 10px 10px;
  box-shadow:0 10px 24px rgba(0,0,0,.16);position:relative;display:grid;place-items:center}
.card-img .pkg::before{content:"";position:absolute;top:0;left:0;right:0;height:34%;
  background:rgba(255,255,255,.22);border-radius:14px 14px 40% 40%}
.card-img .pkg span{font-size:2rem;filter:drop-shadow(0 2px 3px rgba(0,0,0,.2))}
.card-img .pkg-img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.tag{position:absolute;top:10px;left:10px;background:var(--terra);color:#fff;
  font-size:.68rem;font-weight:700;padding:.2rem .6rem;border-radius:6px}
.card-body{padding:1rem 1.1rem 1.2rem;display:flex;flex-direction:column;flex:1}
.card-cat{font-size:.72rem;color:var(--amber);font-weight:700;letter-spacing:.08em}
.card h3{font-size:1.05rem;margin:.25rem 0 .35rem}
.card p{font-size:.82rem;color:var(--ink-soft);flex:1;margin-bottom:.8rem}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:.5rem}
.price{font-family:"Noto Serif TC";font-weight:700;font-size:1.2rem;color:var(--green)}
.price s{font-size:.78rem;color:var(--ink-soft);font-weight:400;margin-right:.3rem}
.add{background:var(--green);color:#fff;border:none;width:38px;height:38px;border-radius:50%;
  font-size:1.3rem;cursor:pointer;display:grid;place-items:center;transition:.2s;flex-shrink:0}
.add:hover{background:var(--amber);transform:rotate(90deg)}

/* story */
.story{background:var(--bg-soft);margin-top:2rem}
.story{display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:stretch}
.story-art{min-height:420px;background:
  linear-gradient(180deg,#cfe0c2,#9bbf86 55%,#7a5a3a);position:relative;overflow:hidden}
.field{position:absolute;inset:0;background:
  repeating-linear-gradient(80deg,transparent 0 18px,rgba(255,255,255,.12) 18px 20px),
  repeating-linear-gradient(-80deg,transparent 0 24px,rgba(122,90,58,.18) 24px 26px)}
.story-text{padding:4rem;display:flex;flex-direction:column;align-items:flex-start;justify-content:center}
.story-text h2{font-size:2.3rem;font-weight:900;margin-bottom:1rem}
.story-text p{color:var(--ink-soft);margin-bottom:1rem;max-width:42ch}
.story-text .btn{margin-top:.6rem}

/* promise */
.promise-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
.pcard{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.6rem;border-top:4px solid var(--green)}
.pcard h3{font-size:1.1rem;margin-bottom:.5rem;color:var(--green)}
.pcard p{font-size:.88rem;color:var(--ink-soft)}

/* faq */
.faq-list{max-width:760px;margin:0 auto}
.faq-list details{background:var(--white);border:1px solid var(--line);border-radius:14px;
  margin-bottom:.8rem;padding:0 1.4rem;overflow:hidden}
.faq-list summary{cursor:pointer;font-weight:500;padding:1.1rem 0;list-style:none;
  display:flex;justify-content:space-between;align-items:center}
.faq-list summary::after{content:"+";color:var(--amber);font-size:1.4rem;transition:.2s}
.faq-list details[open] summary::after{transform:rotate(45deg)}
.faq-list p{color:var(--ink-soft);padding-bottom:1.1rem;font-size:.92rem}

/* footer */
.footer{background:var(--green-d);color:#d9cfb8;margin-top:2rem;padding:3.5rem 1.5rem 1.5rem}
.foot-inner{max-width:var(--maxw);margin:0 auto;display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2rem;padding-bottom:2rem;border-bottom:1px solid rgba(255,255,255,.12)}
.foot-brand p{font-size:.85rem;margin-top:.6rem;opacity:.8}
.foot-col h4{color:#fff;font-size:.95rem;margin-bottom:.9rem}
.foot-col a{display:block;font-size:.86rem;color:#cabfa6;padding:.25rem 0;transition:.2s}
.foot-col a:hover{color:#fff}
.copyright{text-align:center;font-size:.78rem;opacity:.65;margin-top:1.4rem}

/* cart drawer */
.overlay{position:fixed;inset:0;background:rgba(30,28,22,.45);opacity:0;visibility:hidden;
  transition:.3s;z-index:60}
.overlay.show{opacity:1;visibility:visible}
.cart{position:fixed;top:0;right:0;width:400px;max-width:92vw;height:100%;background:var(--bg);
  z-index:70;display:flex;flex-direction:column;transform:translateX(100%);transition:.32s cubic-bezier(.4,0,.1,1);box-shadow:-10px 0 40px rgba(0,0,0,.15)}
.cart.open{transform:translateX(0)}
.cart-head{display:flex;justify-content:space-between;align-items:center;
  padding:1.3rem 1.4rem;border-bottom:1px solid var(--line)}
.cart-head h3{font-size:1.3rem}
.close{background:none;border:none;font-size:1.8rem;cursor:pointer;color:var(--ink-soft);line-height:1}
.cart-body{flex:1;overflow-y:auto;padding:1rem 1.4rem}
.cart-empty{text-align:center;color:var(--ink-soft);padding:3rem 1rem}
.cart-item{display:flex;gap:.9rem;padding:.9rem 0;border-bottom:1px solid var(--line)}
.ci-thumb{width:58px;height:58px;border-radius:12px;display:grid;place-items:center;font-size:1.5rem;flex-shrink:0}
.ci-info{flex:1;min-width:0}
.ci-info h4{font-size:.95rem;font-weight:500;margin-bottom:.2rem}
.ci-price{color:var(--green);font-weight:700;font-size:.9rem}
.qty{display:inline-flex;align-items:center;gap:.5rem;margin-top:.45rem;
  border:1px solid var(--line);border-radius:50px;padding:.15rem .3rem}
.qty button{width:24px;height:24px;border:none;background:var(--bg-soft);border-radius:50%;
  cursor:pointer;font-size:1rem;line-height:1;color:var(--green)}
.qty span{min-width:20px;text-align:center;font-size:.9rem}
.ci-remove{background:none;border:none;color:var(--ink-soft);cursor:pointer;font-size:.78rem;align-self:flex-start;text-decoration:underline}
.cart-foot{padding:1.2rem 1.4rem;border-top:1px solid var(--line);background:var(--white)}
.ship-note{font-size:.8rem;color:var(--amber);margin-bottom:.7rem;text-align:center}
.cart-total{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:1rem}
.cart-total b{font-family:"Noto Serif TC";font-size:1.5rem;color:var(--green)}

/* modal */
.modal{position:fixed;inset:0;background:rgba(30,28,22,.5);z-index:80;display:none;
  align-items:flex-start;justify-content:center;padding:5vh 1rem;overflow-y:auto}
.modal.show{display:flex}
.modal-box{background:var(--bg);border-radius:var(--radius);padding:2rem;max-width:540px;width:100%;position:relative;box-shadow:var(--shadow)}
.modal-close{position:absolute;top:1rem;right:1.2rem}
.modal-box h3{font-size:1.5rem;margin-bottom:1.3rem}
#checkoutForm label{display:block;font-size:.85rem;font-weight:500;margin-bottom:.9rem}
#checkoutForm input,#checkoutForm select,#checkoutForm textarea{
  width:100%;margin-top:.3rem;padding:.7rem .9rem;border:1.4px solid var(--line);
  border-radius:10px;font-family:inherit;font-size:.95rem;background:var(--white)}
#checkoutForm input:focus,#checkoutForm select:focus,#checkoutForm textarea:focus{outline:none;border-color:var(--green)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}
.modal-summary{background:var(--bg-soft);border-radius:12px;padding:.9rem 1.1rem;margin:.4rem 0 1.1rem;font-size:.9rem}
.modal-summary .row{display:flex;justify-content:space-between;padding:.15rem 0}
.modal-summary .grand{border-top:1px dashed var(--line);margin-top:.4rem;padding-top:.5rem;font-weight:700;color:var(--green)}
.modal-hint{font-size:.75rem;color:var(--ink-soft);text-align:center;margin-top:.7rem}

/* toast */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--green-d);color:#fff;padding:.8rem 1.5rem;border-radius:50px;font-size:.9rem;
  opacity:0;visibility:hidden;transition:.3s;z-index:90;box-shadow:var(--shadow)}
.toast.show{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}

/* responsive */
@media(max-width:980px){
  .grid,.promise-grid{grid-template-columns:repeat(2,1fr)}
  .features{grid-template-columns:repeat(2,1fr)}
  .hero{grid-template-columns:1fr;text-align:center}
  .hero-cta,.hero-badges{justify-content:center}
  .hero-art{height:300px;order:-1}
  .story{grid-template-columns:1fr}
  .story-art{min-height:240px}
  .story-text{padding:2.6rem 1.6rem}
  .foot-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .nav-links{display:none}
  .grid{grid-template-columns:repeat(2,1fr);gap:.9rem}
  .field-row{grid-template-columns:1fr}
  .hero-badges{gap:1.2rem}
  .section{padding:3.5rem 1.2rem}
}