/* ═══════════════════════════════════════════════
   Boxelan · 产品详情页共用样式
   与首页同一套配色：牛皮纸 + 深绿
   ═══════════════════════════════════════════════ */
:root{
  --ink:#2b2118;
  --paper:#faf6ef;
  --card:#ffffff;
  --kraft:#c9a06c;
  --kraft-dark:#a97e45;
  --green:#2f5d3a;
  --green-dark:#234629;
  --muted:#7a6f63;
  --line:#e8dfcf;
  --radius:14px;
  --shadow:0 8px 28px rgba(60,42,20,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;background:var(--paper);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.25;font-weight:700}
.wrap{width:min(1120px,calc(100% - 48px));margin:0 auto}

/* ── 顶栏 ── */
.topbar{background:var(--green-dark);color:#e8e1d2;font-size:.8rem}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:7px 0;flex-wrap:wrap}
.topbar a{color:#f0e6d2}
.topbar a:hover{color:var(--kraft)}
.topbar .tl{display:flex;gap:18px;flex-wrap:wrap}

/* ── 导航 ── */
.nav{position:sticky;top:0;z-index:60;background:rgba(250,246,239,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-family:Georgia,serif;font-size:1.12rem;letter-spacing:.14em;color:var(--green-dark);font-weight:700}
.logo svg{width:34px;height:34px}
.nav .links{display:flex;gap:26px;font-size:.9rem;font-weight:600;color:#4d453a}
.nav .links a{position:relative;padding:4px 0}
.nav .links a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--green);transform:scaleX(0);transform-origin:left;transition:transform .28s ease}
.nav .links a:hover{color:var(--green)}
.nav .links a:hover::after{transform:scaleX(1)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:999px;font-size:.9rem;font-weight:600;border:1px solid transparent;transition:transform .22s,box-shadow .22s,background .22s,color .22s;cursor:pointer;white-space:nowrap}
.btn-primary{background:var(--green);color:#f7f3e9;box-shadow:0 6px 18px rgba(47,93,58,.25)}
.btn-primary:hover{background:var(--green-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(47,93,58,.3)}
.btn-ghost{background:transparent;border-color:#d8c6a8;color:var(--green-dark)}
.btn-ghost:hover{background:#f1e7d6;border-color:var(--kraft);transform:translateY(-2px)}
.btn-wa{background:#25d366;color:#0c3c1e}
.btn-wa:hover{background:#1eb958;transform:translateY(-2px)}

/* ── 面包屑 ── */
.crumb{font-size:.8rem;color:var(--muted);padding:20px 0 0}
.crumb a:hover{color:var(--green)}
.crumb span{opacity:.5;margin:0 8px}

/* ── 产品首屏 ── */
.p-hero{display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center;padding:26px 0 64px}
.p-visual{background:linear-gradient(160deg,#efe3d4,#ddcdbb);border-radius:20px;padding:18px;box-shadow:0 18px 48px rgba(58,40,22,.16)}
.p-visual img{width:100%;height:auto;border-radius:14px;box-shadow:0 10px 26px rgba(58,40,22,.2)}
.kicker{display:inline-block;background:#efe4cf;color:var(--kraft-dark);font-size:.74rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;padding:6px 15px;border-radius:999px;margin-bottom:16px}
h1{font-family:Georgia,serif;font-size:2.5rem;color:var(--green-dark);margin-bottom:14px}
.lede{color:#584c3e;font-size:1.02rem;margin-bottom:20px}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:.8rem;color:#5f5445;display:inline-flex;align-items:center;gap:6px}
.chip b{color:var(--green-dark)}
.actions{display:flex;gap:12px;flex-wrap:wrap}

/* ── 通用区块 ── */
section.blk{padding:58px 0}
section.blk.alt{background:#f3ecdd}
.sec-head{max-width:640px;margin-bottom:34px}
.sec-head h2{font-family:Georgia,serif;font-size:1.85rem;color:var(--green-dark);margin-bottom:8px}
.sec-head p{color:var(--muted)}
.sec-head.center{margin:0 auto 34px;text-align:center}

/* ── 规格表 ── */
.spec{display:grid;grid-template-columns:1fr 1fr;gap:0 46px}
.spec div{display:grid;grid-template-columns:150px 1fr;gap:14px;padding:13px 0;border-bottom:1px dashed #e2d6c1}
.spec dt{color:var(--kraft-dark);font-size:.84rem;font-weight:700;letter-spacing:.02em}
.spec dd{color:#4e4437;font-size:.92rem}

/* ── 款式卡 ── */
.opt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.opt{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--kraft);border-radius:12px;padding:20px 22px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s,border-color .3s}
.opt:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(60,42,20,.12);border-left-color:var(--green)}
.opt h3{font-size:1rem;color:var(--green-dark);margin-bottom:6px}
.opt p{font-size:.86rem;color:var(--muted)}

/* ── 工艺标签 ── */
.finish{display:flex;flex-wrap:wrap;gap:10px}
.finish span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 18px;font-size:.85rem;color:#5f5445}
.finish span::before{content:"✦";color:var(--kraft);margin-right:8px;font-size:.72rem}

/* ── 流程 ── */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:s}
.step{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 18px}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);display:block;font-family:Georgia,serif;font-size:1.5rem;color:var(--kraft);margin-bottom:6px}
.step h4{font-size:.94rem;color:var(--green-dark);margin-bottom:5px}
.step p{font-size:.82rem;color:var(--muted)}

/* ── 工厂实拍 ── */
.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.shots figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.shots img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover}
.shots figcaption{font-size:.76rem;color:var(--muted);padding:9px 12px 11px;line-height:1.4}

/* ── FAQ ── */
.sub-head{font-family:Georgia,serif;font-size:1.35rem;color:var(--green-dark);margin:46px 0 14px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:10px}
.faq summary{font-weight:600;color:var(--green-dark);cursor:pointer;list-style:none;font-size:.94rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--kraft);font-weight:400;font-size:1.2rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq p{font-size:.88rem;color:var(--muted);margin-top:9px}

/* ── 相关产品 ── */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rel{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column}
.rel:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(60,42,20,.14)}
.rel img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}
.rel div{padding:16px 18px 18px}
.rel h3{font-size:.98rem;color:var(--green-dark);margin-bottom:4px}
.rel p{font-size:.8rem;color:var(--muted)}

/* ── 底部 CTA ── */
.cta-band{background:linear-gradient(120deg,#3a2c1c 0%,#4a3722 55%,#57431f 100%);color:#f2ead9;padding:62px 0}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta-band h2{font-family:Georgia,serif;font-size:1.75rem;margin-bottom:8px}
.cta-band p{opacity:.85;font-size:.94rem;max-width:46ch}
.cta-band .actions .btn-ghost{border-color:rgba(240,230,210,.45);color:#f2ead9}
.cta-band .actions .btn-ghost:hover{background:rgba(255,255,255,.1)}

/* ── 页脚 ── */
footer{background:#241a12;color:#cdbfa9;padding:48px 0 26px;font-size:.86rem}
.foot{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
footer h4{font-family:Georgia,serif;letter-spacing:.14em;font-size:.9rem;color:#f2ead9;margin-bottom:12px}
footer a:hover{color:var(--kraft)}
footer p{opacity:.8;margin-bottom:7px;line-height:1.6}
.foot .bottom{grid-column:1/-1;text-align:center;font-size:.78rem;opacity:.6;padding-top:20px}

/* ── WhatsApp 悬浮 ── */
.wa-float{position:fixed;inset-inline-end:20px;bottom:22px;width:56px;height:56px;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px rgba(37,211,102,.4);z-index:80;transition:transform .25s}
.wa-float:hover{transform:scale(1.07)}
.wa-float svg{width:30px;height:30px;fill:#fff}
.wa-float::before{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid rgba(37,211,102,.55);animation:ring 2.8s ease-out infinite}
@keyframes ring{0%{transform:scale(1);opacity:.8}100%{transform:scale(1.55);opacity:0}}

/* ── 语言提示条（非英语访客可见） ── */
.lang-note{display:none;background:#f1e7d6;border-bottom:1px solid var(--line);font-size:.8rem;color:#6b5c48}
.lang-note .wrap{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:8px 0;flex-wrap:wrap}
.lang-note a{color:var(--green);font-weight:600}

/* ── 响应式 ── */
@media(max-width:980px){
  .p-hero{grid-template-columns:1fr;gap:32px;padding:18px 0 46px}
  .spec{grid-template-columns:1fr;gap:0}
  .opt-grid,.rel-grid,.shots{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .nav .links{display:none}
  h1{font-size:2.1rem}
}
@media(max-width:620px){
  .wrap{width:calc(100% - 32px)}
  .topbar .tl{display:none}
  .p-hero{padding-bottom:38px}
  h1{font-size:1.72rem}
  .lede{font-size:.95rem}
  .spec div{grid-template-columns:1fr;gap:2px;padding:11px 0}
  .spec dt{font-size:.78rem}
  .opt-grid,.rel-grid,.shots,.steps{grid-template-columns:1fr}
  .cta-band .wrap{flex-direction:column;align-items:flex-start}
  .actions{width:100%}
  .p-hero .actions .btn{flex:1 1 0;min-width:0;padding:12px 10px;font-size:.86rem}
  .cta-band .actions{display:flex;flex-direction:column;gap:10px}
  .cta-band .actions .btn{width:100%;padding:13px 16px;font-size:.9rem}
  .foot{grid-template-columns:1fr;gap:26px}
  footer{padding:36px 0 88px}
}
@media(max-width:360px){
  /* 极窄屏：头部按钮单行、首屏双按钮竖排 */
  .nav .wrap{gap:10px}
  .nav .btn{padding:9px 14px;font-size:.82rem}
  .logo{font-size:.98rem;gap:8px}
  .logo svg{width:30px;height:30px}
  .p-hero .actions{flex-direction:column}
  .p-hero .actions .btn{width:100%;flex:0 0 auto;padding:13px 14px;font-size:.9rem}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
}