/* ============ 食味工坊 · 纸感发酵美学 ============ */
:root{
  --paper:#f6f1e7;
  --paper-2:#efe7d8;
  --ink:#2b2118;
  --ink-soft:#6b5d4f;
  --amber:#a8561c;
  --amber-deep:#7c3a10;
  --line:#d8cbb6;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--serif);
  background:var(--paper);
  color:var(--ink);
  line-height:1.7;
  background-image:
    radial-gradient(ellipse at 15% 0%, rgba(168,86,28,.06), transparent 55%),
    radial-gradient(ellipse at 90% 100%, rgba(107,93,79,.08), transparent 50%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* ---- 顶栏 ---- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,241,231,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-size:22px;font-weight:700;letter-spacing:.12em}
.brand em{font-style:normal;color:var(--amber)}
.nav-links{display:flex;gap:28px;font-family:var(--sans);font-size:14px;color:var(--ink-soft)}
.nav-links a:hover{color:var(--amber)}

/* ---- Hero ---- */
.hero{padding:96px 0 72px;position:relative;overflow:hidden}
.hero::after{
  content:"醸";position:absolute;right:-30px;top:20px;
  font-size:340px;color:rgba(168,86,28,.05);font-weight:700;pointer-events:none;
}
.kicker{
  display:inline-block;font-family:var(--sans);font-size:12px;letter-spacing:.35em;
  color:var(--amber);border:1px solid var(--amber);border-radius:2px;
  padding:4px 14px;margin-bottom:28px;
}
.hero h1{font-size:clamp(34px,6vw,58px);font-weight:700;letter-spacing:.06em;line-height:1.3}
.hero h1 .hl{color:var(--amber-deep)}
.hero p{margin-top:22px;max-width:560px;color:var(--ink-soft);font-size:17px}
.hero-cta{margin-top:40px;display:flex;gap:18px;flex-wrap:wrap}
.btn{
  font-family:var(--sans);font-size:15px;letter-spacing:.1em;
  padding:13px 34px;border-radius:2px;transition:.25s;cursor:pointer;border:1px solid var(--amber);
}
.btn-solid{background:var(--amber);color:#fdf9f0}
.btn-solid:hover{background:var(--amber-deep);border-color:var(--amber-deep)}
.btn-ghost{color:var(--amber);background:transparent}
.btn-ghost:hover{background:var(--amber);color:#fdf9f0}

/* ---- 章节标题 ---- */
.sec{padding:72px 0}
.sec-head{display:flex;align-items:baseline;gap:18px;margin-bottom:44px}
.sec-head .no{font-size:44px;color:var(--line);font-weight:700}
.sec-head h2{font-size:30px;letter-spacing:.08em}
.sec-head .en{font-family:var(--sans);font-size:12px;letter-spacing:.3em;color:var(--ink-soft);text-transform:uppercase}

/* ---- 产品卡片 ---- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:32px}
.card{
  background:#fbf7ee;border:1px solid var(--line);border-radius:4px;overflow:hidden;
  transition:.3s;display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-6px);box-shadow:0 24px 48px -20px rgba(43,33,24,.25);border-color:var(--amber)}
.card .ph{aspect-ratio:4/3;overflow:hidden;background:var(--paper-2)}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:.6s}
.card:hover .ph img{transform:scale(1.06)}
.card .bd{padding:22px 24px 26px;flex:1;display:flex;flex-direction:column}
.card h3{font-size:21px;letter-spacing:.05em}
.card .sub{color:var(--ink-soft);font-size:14px;margin-top:6px;font-family:var(--sans)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 20px;font-family:var(--sans);font-size:12px}
.chip{background:var(--paper-2);color:var(--ink-soft);padding:4px 12px;border-radius:20px}
.chip.amber{background:rgba(168,86,28,.1);color:var(--amber-deep)}
.chip.spice{background:rgba(178,59,46,.1);color:#a5342a;border:1px solid rgba(178,59,46,.3)}
.chip.spice .spice-val{display:inline-flex;align-items:center;gap:2px}
.chip.spice .chili{font-size:13px;line-height:1;filter:saturate(1.15)}
.chip.spice .spice-txt{margin-left:4px}
.card .go{margin-top:auto;font-family:var(--sans);font-size:14px;color:var(--amber);letter-spacing:.15em}
.card .go::after{content:" →";transition:.2s;display:inline-block}
.card:hover .go::after{transform:translateX(4px)}
.empty{grid-column:1/-1;text-align:center;color:var(--ink-soft);padding:60px 0;font-family:var(--sans)}

/* ---- 溯源三步 ---- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px;counter-reset:s}
.step{border-left:2px solid var(--amber);padding:8px 0 8px 24px;position:relative}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  position:absolute;left:-15px;top:-6px;background:var(--paper);
  color:var(--amber);font-size:13px;font-family:var(--sans);padding:2px 6px;letter-spacing:.1em;
}
.step h4{font-size:18px;margin-bottom:8px}
.step p{font-family:var(--sans);font-size:14px;color:var(--ink-soft)}

/* ---- 页脚 ---- */
footer{border-top:1px solid var(--line);padding:40px 0;margin-top:40px}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;font-family:var(--sans);font-size:13px;color:var(--ink-soft)}

/* ============ 扫码详情页(移动优先) ============ */
.trace{max-width:520px;margin:0 auto;padding:28px 20px 60px}
.trace .back{font-family:var(--sans);font-size:13px;color:var(--ink-soft)}
.tcard{background:#fbf7ee;border:1px solid var(--line);border-radius:6px;overflow:hidden;margin-top:18px}
.tcard .ph{aspect-ratio:16/10;overflow:hidden}
.tcard .ph img{width:100%;height:100%;object-fit:cover}
.tcard .bd{padding:24px 24px 28px}
.tcard h1{font-size:26px;letter-spacing:.05em}
.tcard .code{font-family:var(--sans);font-size:12px;color:var(--ink-soft);margin-top:6px;letter-spacing:.1em}
.tcard .desc{margin-top:14px;color:var(--ink-soft);font-size:15px}
.badge{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-family:var(--sans);font-size:13px;color:var(--amber-deep);
  background:rgba(168,86,28,.1);border:1px dashed var(--amber);border-radius:4px;padding:6px 14px;
}
/* 时间线 */
.timeline{margin-top:26px;position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{position:relative;margin-bottom:22px}
.tl-item::before{
  content:"";position:absolute;left:-25px;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--paper);border:3px solid var(--amber);
}
.tl-item .tl-k{font-family:var(--sans);font-size:12px;letter-spacing:.2em;color:var(--ink-soft)}
.tl-item .tl-v{font-size:19px;font-weight:700;margin-top:2px}
.tl-item .tl-note{font-family:var(--sans);font-size:13px;color:var(--ink-soft);margin-top:4px;white-space:pre-line}
.qrbox{margin-top:30px;background:#fbf7ee;border:1px solid var(--line);border-radius:6px;padding:22px;text-align:center}
.qrbox .t{font-family:var(--sans);font-size:13px;color:var(--ink-soft);letter-spacing:.15em;margin-bottom:14px}
#qrcode{display:inline-block;padding:10px;background:#fff;border:1px solid var(--line)}
#qrcode img,#qrcode canvas{display:block}
.qrbox .u{font-family:var(--sans);font-size:11px;color:var(--ink-soft);margin-top:12px;word-break:break-all}
.notfound{max-width:520px;margin:80px auto;text-align:center;color:var(--ink-soft);font-family:var(--sans)}

/* 管理员扫码编辑条 */
.admin-bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:linear-gradient(90deg,#2b2118,#3d2f22);color:#f6f1e7;
  border-radius:8px;padding:12px 16px;margin-bottom:16px;
  font-family:var(--sans);font-size:13px;box-shadow:0 8px 20px -10px rgba(43,33,24,.5);
  animation:abIn .5s ease both;
}
.admin-bar span{letter-spacing:.15em;opacity:.85}
.admin-bar .ab-btn{
  background:var(--amber);color:#fdf9f0;padding:8px 16px;border-radius:6px;
  font-size:14px;letter-spacing:.05em;white-space:nowrap;transition:.2s;
}
.admin-bar .ab-btn:hover{background:#c4661f;transform:translateY(-1px)}
@keyframes abIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.toast{
  position:fixed;left:50%;top:18px;transform:translateX(-50%);z-index:99;
  background:#2f6b3f;color:#fff;padding:11px 22px;border-radius:30px;
  font-family:var(--sans);font-size:14px;box-shadow:0 10px 30px -8px rgba(0,0,0,.4);
  transition:opacity .6s;animation:toastIn .4s ease both;
}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,-16px)}to{opacity:1;transform:translate(-50%,0)}}

@media (max-width:640px){
  .hero{padding:64px 0 48px}
  .hero::after{font-size:200px;top:0}
  .nav-links{gap:16px}
  .sec{padding:52px 0}
}