/* ══════════════════════════════════════════════════════════
   指印咖啡 · 统一样式系统 v3.0
   深烘焙色系  ·  振华经方旗下品牌
   主色：#2C1810(深烘)  #C4A265(铜金)  #F5F0EB(奶白)
   ══════════════════════════════════════════════════════════ */

/* ── 色板 ── */
:root {
  --espresso:    #2C1810;
  --espresso-90: #3D2217;
  --espresso-80: #4E2D1E;
  --copper:      #C4A265;
  --copper-light:#D4B87A;
  --copper-dim:  #8B6914;
  --cream:       #F5F0EB;
  --cream-dark:  #E8E0D5;
  --cream-light: #FAF7F2;
  --text:        #2C2C2C;
  --text-dim:    #6B5A4A;
  --text-soft:   #8B7355;
  --white:       #FFFFFF;
  --border:      rgba(196,162,101,.25);
  --border-light:rgba(196,162,101,.12);
  --shadow-sm:   0 2px 12px rgba(0,0,0,.06);
  --shadow-md:   0 8px 30px rgba(0,0,0,.10);
  --shadow-lg:   0 16px 48px rgba(0,0,0,.15);
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --transition:  .3s cubic-bezier(.4,0,.2,1);
}

/* ── Reset & Base ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--cream);
  color:var(--text);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block}
a{color:var(--copper);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--copper-light)}

/* ── 品牌关联条 ── */
.brand-bar{
  background:var(--espresso);
  color:var(--text-soft);
  text-align:center;
  font-size:.7rem;
  padding:.35rem 1rem;
  letter-spacing:.06em;
}
.brand-bar a{color:var(--copper);font-size:.7rem}
.brand-bar a:hover{color:var(--copper-light)}

/* ── 导航 ── */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(44,24,16,.95);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(196,162,101,.15);
  display:flex;align-items:center;justify-content:space-between;
  padding:.6rem 1.5rem;
  transition:background var(--transition),box-shadow var(--transition);
}
.nav.scrolled{box-shadow:0 4px 20px rgba(0,0,0,.3)}
.nav-brand{
  font-size:1.05rem;font-weight:700;color:var(--cream-light);
  letter-spacing:.08em;display:flex;align-items:center;gap:.4rem;
  transition:color var(--transition);
}
.nav-brand:hover{color:var(--copper)}
.nav-brand img{width:24px;height:24px}
.nav-links{display:flex;gap:1.8rem;list-style:none}
.nav-links a{
  color:rgba(245,240,235,.7);font-size:.82rem;
  letter-spacing:.05em;transition:all var(--transition);
  padding:.3rem 0;border-bottom:2px solid transparent;
  position:relative;
}
.nav-links a::after{
  content:'';position:absolute;bottom:-2px;left:50%;width:0;height:2px;
  background:var(--copper);transition:all var(--transition);transform:translateX(-50%);
}
.nav-links a:hover,.nav-links a.active{
  color:var(--copper-light);
}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}

/* ── 汉堡菜单按钮 ── */
.nav-toggle{
  display:none;background:none;border:none;
  cursor:pointer;padding:.3rem;z-index:101;
}
.nav-toggle span{
  display:block;width:24px;height:2.5px;
  background:var(--copper);margin:5px 0;
  transition:all .35s cubic-bezier(.68,-.55,.27,1.55);
  border-radius:2px;
}
.nav-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle.open span:nth-child(2){opacity:0;transform:scaleX(0)}
.nav-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ── Hero ── */
.hero{
  position:relative;min-height:85vh;
  display:flex;align-items:flex-end;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
}
.hero-bg img{
  width:100%;height:100%;object-fit:cover;
  object-position:center;
  transition:transform 8s ease;
}
.hero:hover .hero-bg img{transform:scale(1.05)}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(
    to bottom,
    rgba(44,24,16,.15) 0%,
    rgba(44,24,16,.35) 30%,
    rgba(44,24,16,.75) 65%,
    var(--espresso) 100%
  );
}
.hero-overlay::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at 30% 40%,rgba(196,162,101,.1) 0%,transparent 60%);
}
.hero-content{
  position:relative;z-index:2;
  padding:4rem 2rem 5rem;
  max-width:720px;margin:0 auto;
  text-align:center;width:100%;
}
.hero-tag{
  display:inline-block;
  padding:.25rem 1rem;
  border:1px solid var(--copper-dim);
  border-radius:3px;
  color:var(--copper-light);
  font-size:.7rem;letter-spacing:.14em;
  margin-bottom:1.5rem;
  text-transform:uppercase;
  backdrop-filter:blur(4px);
  background:rgba(44,24,16,.3);
}
.hero-title{
  font-family:"KaiTi","STKaiti","楷体","Noto Serif SC",serif;
  font-size:clamp(2.2rem,5vw,3.6rem);font-weight:bold;
  color:var(--cream-light);
  letter-spacing:.18em;
  line-height:1.3;
  margin-bottom:1.2rem;
  text-shadow:0 2px 20px rgba(0,0,0,.5);
}
.hero-title em{
  font-style:normal;color:var(--copper-light);
  font-size:1.15em;
}
.hero-sub{
  color:rgba(245,240,235,.65);
  font-size:.95rem;letter-spacing:.06em;
  margin-bottom:2rem;
  line-height:1.8;max-width:560px;margin-left:auto;margin-right:auto;
}

/* ── 数据卡三连 ── */
.stats-row{
  display:flex;gap:1rem;justify-content:center;
  flex-wrap:wrap;margin-top:.5rem;
}
.stat-card{
  background:rgba(245,240,235,.06);
  border:1px solid rgba(196,162,101,.2);
  border-radius:var(--radius-sm);
  padding:1rem 1.5rem;text-align:center;
  min-width:120px;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:all var(--transition);
  cursor:default;
}
.stat-card:hover{
  border-color:var(--copper);
  background:rgba(245,240,235,.12);
  transform:translateY(-3px);
  box-shadow:0 8px 24px rgba(0,0,0,.2);
}
.stat-num{
  font-family:Georgia,"Times New Roman",serif;
  font-size:2.2rem;font-weight:bold;
  color:var(--copper-light);
  line-height:1.1;
}
.stat-label{
  color:rgba(245,240,235,.5);
  font-size:.72rem;letter-spacing:.06em;
  margin-top:.2rem;
}

/* ── 通用 Section ── */
.section{
  padding:5rem 2rem;max-width:1000px;margin:0 auto;
}
.section-dark{
  background:var(--espresso);
  color:var(--cream-light);
  padding:5rem 0;
  position:relative;
  overflow:hidden;
}
.section-dark::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:600px;height:1px;
  background:linear-gradient(90deg,transparent,var(--copper-dim),transparent);
}
.section-dark .section{max-width:1000px;margin:0 auto;padding:0 2rem}
.section-cream{background:var(--cream-dark)}
.section-label{
  color:var(--copper);
  font-size:.7rem;letter-spacing:.14em;
  margin-bottom:.5rem;text-transform:uppercase;
}
.section-title{
  font-family:"KaiTi","STKaiti","楷体","Noto Serif SC",serif;
  font-size:clamp(1.5rem,3vw,2.2rem);color:var(--text);
  letter-spacing:.1em;margin-bottom:.8rem;
  line-height:1.4;
}
.section-dark .section-title{color:var(--cream-light)}
.section-sub{
  color:var(--text-dim);
  font-size:.9rem;line-height:1.8;margin-bottom:2.5rem;
  max-width:620px;
}
.section-dark .section-sub{color:rgba(245,240,235,.5)}

/* ── 图片栅格 ── */
.photo-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1rem;margin-top:1.5rem;
}
.photo-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.photo-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.photo-item{
  position:relative;overflow:hidden;
  border-radius:var(--radius-sm);
  aspect-ratio:4/3;cursor:pointer;
  transition:transform .4s cubic-bezier(.4,0,.2,1),box-shadow .4s ease;
}
.photo-item:hover{
  transform:scale(1.03);
  box-shadow:0 12px 32px rgba(0,0,0,.15);
}
.photo-item img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .8s ease;
}
.photo-item:hover img{transform:scale(1.08)}
.photo-caption{
  position:absolute;bottom:0;left:0;right:0;
  padding:.7rem 1rem;
  background:linear-gradient(transparent,rgba(0,0,0,.75));
  color:var(--cream-light);
  font-size:.75rem;letter-spacing:.04em;
  transition:opacity var(--transition);
}

/* ── 工艺水平滚动 ── */
.craft-scroll{
  display:flex;gap:1.5rem;overflow-x:auto;
  padding:1rem 0 2rem;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  scrollbar-color:var(--copper-dim) transparent;
}
.craft-scroll::-webkit-scrollbar{height:6px}
.craft-scroll::-webkit-scrollbar-track{background:transparent}
.craft-scroll::-webkit-scrollbar-thumb{background:var(--copper-dim);border-radius:3px}
.craft-step{
  flex:0 0 280px;scroll-snap-align:start;
  background:rgba(245,240,235,.05);
  border:1px solid rgba(196,162,101,.12);
  border-radius:var(--radius-md);overflow:hidden;
  transition:all var(--transition);
}
.craft-step:hover{
  border-color:var(--copper-dim);
  transform:translateY(-4px);
  box-shadow:0 12px 32px rgba(0,0,0,.2);
}
.craft-step img{
  width:100%;height:200px;object-fit:cover;
  transition:transform .6s ease;
}
.craft-step:hover img{transform:scale(1.05)}
.craft-step-body{padding:1.2rem}
.craft-step-num{
  font-family:Georgia,serif;
  font-size:2rem;color:var(--copper-dim);
  line-height:1;margin-bottom:.3rem;
}
.craft-step-title{
  color:var(--copper-light);font-size:.95rem;
  letter-spacing:.05em;margin-bottom:.3rem;
}
.craft-step-desc{
  color:rgba(245,240,235,.5);font-size:.75rem;line-height:1.7;
}

/* ── 评价卡片 ── */
.review-cards{
  display:flex;gap:1.5rem;overflow-x:auto;
  padding:1rem 0;scroll-snap-type:x mandatory;
  scrollbar-width:thin;
  scrollbar-color:var(--copper-dim) transparent;
}
.review-cards::-webkit-scrollbar{height:6px}
.review-cards::-webkit-scrollbar-track{background:transparent}
.review-cards::-webkit-scrollbar-thumb{background:var(--copper-dim);border-radius:3px}
.review-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:rgba(245,240,235,.06);
  border:1px solid var(--border-light);
  border-radius:var(--radius-md);padding:1.5rem;
  transition:all var(--transition);
}
.review-card:hover{
  border-color:var(--copper-dim);
  box-shadow:0 8px 32px rgba(0,0,0,.15);
  transform:translateY(-3px);
}
.review-stars{
  color:var(--copper-light);font-size:1rem;
  letter-spacing:.15em;margin-bottom:.6rem;
}
.review-text{
  color:rgba(245,240,235,.6);font-size:.82rem;
  line-height:1.7;margin-bottom:.8rem;
  font-style:italic;
}
.review-author{
  color:var(--text-soft);font-size:.7rem;
}

/* ── 产品卡片通用 ── */
.product-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:20px;max-width:1100px;margin:0 auto;
}
.product-card{
  background:var(--white);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:all var(--transition);cursor:pointer;
  border-top:3px solid var(--copper);
  position:relative;
}
.product-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.product-card .pc-img{
  width:100%;height:180px;object-fit:cover;
  background:linear-gradient(135deg,var(--cream-dark),var(--cream));
  display:flex;align-items:center;justify-content:center;
  font-size:3rem;color:var(--copper-dim);
  transition:transform .6s ease;
}
.product-card:hover .pc-img{transform:scale(1.03)}
.pc-badge{
  position:absolute;top:12px;right:12px;
  padding:4px 12px;border-radius:12px;
  background:rgba(44,24,16,.08);color:var(--copper-dim);
  font-size:11px;font-weight:600;
  z-index:1;
}
.pc-rec{
  display:inline-block;margin:4px 0;
  padding:3px 10px;border-radius:10px;
  background:linear-gradient(135deg,var(--copper),var(--copper-dim));
  color:var(--white);font-size:11px;font-weight:600;
}
.product-card-body{padding:20px 24px}
.product-card h3{font-size:20px;color:var(--espresso);margin-bottom:4px}
.pc-origin{font-size:12px;color:var(--text-soft);margin-bottom:8px}
.pc-flavor{font-size:14px;color:var(--text-dim);margin-bottom:12px;line-height:1.6}
.pc-price{font-size:28px;font-weight:700;color:var(--copper);margin-bottom:4px}
.pc-price span{font-size:13px;color:var(--text-soft);font-weight:400}
.pc-half{font-size:12px;color:var(--copper-dim);margin-top:2px}
.pc-actions{margin-top:14px}
.pc-btn{
  width:100%;padding:10px;border:1px solid var(--copper);
  background:none;color:var(--copper);border-radius:var(--radius-sm);
  cursor:pointer;font-size:14px;letter-spacing:.05em;
  transition:all var(--transition);
  font-family:inherit;
}
.pc-btn:hover{background:var(--copper);color:var(--white)}
.pc-code{position:absolute;bottom:12px;right:16px;font-size:10px;color:rgba(139,115,85,.4);font-family:monospace}

/* ── 知识库卡片 ── */
.kb-hero{
  background:linear-gradient(135deg,var(--espresso) 0%,var(--espresso-90) 50%,var(--espresso) 100%);
  padding:60px 24px;text-align:center;
  position:relative;overflow:hidden;
}
.kb-hero::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 40% 50%,rgba(196,162,101,.06) 0%,transparent 70%);
}
.kb-hero-content{max-width:800px;margin:0 auto;position:relative;z-index:1}
.kb-hero-label{color:var(--copper);font-size:12px;letter-spacing:.2em;margin-bottom:16px}
.kb-hero h1{color:var(--cream-light);font-size:clamp(28px,5vw,48px);font-weight:300;letter-spacing:.08em;margin-bottom:12px}
.kb-hero p{color:rgba(245,240,235,.5);font-size:16px}

.kb-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:20px;max-width:1100px;margin:0 auto;
}
.kb-card{
  background:var(--white);border-radius:var(--radius-lg);
  padding:28px;text-decoration:none;color:inherit;
  display:flex;gap:20px;align-items:flex-start;
  box-shadow:var(--shadow-sm);
  transition:all var(--transition);
  border-top:3px solid var(--accent,var(--copper));
  animation:cardSlideIn .5s ease-out both;
}
.kb-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.kb-card-icon{
  font-size:36px;flex-shrink:0;width:56px;height:56px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(196,162,101,.08),rgba(196,162,101,.15));
  border-radius:var(--radius-md);
}
.kb-card-en{font-size:11px;color:var(--text-soft);letter-spacing:.1em;margin-bottom:4px}
.kb-card h3{font-size:20px;color:var(--espresso);margin-bottom:6px}
.kb-card p{font-size:13px;color:var(--text-dim);line-height:1.6;margin-bottom:12px}
.kb-card-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--text-soft)}
.kb-tags span{display:inline-block;padding:2px 8px;border-radius:10px;background:rgba(196,162,101,.1);color:var(--copper-dim);font-size:11px}

@keyframes cardSlideIn{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}

/* ── 知识库子页 ── */
.kb-hero-stats{display:flex;gap:16px;justify-content:center;margin-top:16px;font-size:13px;color:rgba(245,240,235,.4)}
.kb-subnav{position:sticky;top:60px;z-index:98;background:rgba(245,240,235,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);display:flex;gap:8px;padding:12px 24px;border-bottom:1px solid rgba(196,162,101,.15);overflow-x:auto;scrollbar-width:none}
.kb-subnav::-webkit-scrollbar{display:none}
.kb-subnav a{padding:8px 18px;border-radius:20px;background:var(--white);color:var(--espresso);text-decoration:none;font-size:13px;white-space:nowrap;box-shadow:0 1px 4px rgba(0,0,0,.06);transition:all var(--transition)}
.kb-subnav a:hover,.kb-subnav a.active{background:var(--copper);color:var(--white)}
.kb-region{margin-bottom:48px}
.kb-region h2{font-size:24px;color:var(--espresso);margin-bottom:8px}
.region-desc{color:var(--text-soft);font-size:14px;margin-bottom:24px;max-width:600px}
.kb-article-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.kb-article-card{display:flex;background:var(--white);border-radius:var(--radius-md);overflow:hidden;text-decoration:none;color:inherit;box-shadow:var(--shadow-sm);transition:all var(--transition)}
.kb-article-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.article-img{width:80px;flex-shrink:0;background:linear-gradient(135deg,var(--cream-dark),var(--cream));display:flex;align-items:center;justify-content:center;font-size:2rem;color:var(--copper-dim)}
.article-body{padding:16px;flex:1}
.article-tag{font-size:11px;padding:2px 8px;border-radius:8px;background:rgba(196,162,101,.1);color:var(--copper-dim)}
.article-body h3{font-size:16px;color:var(--espresso);margin:6px 0 4px}
.article-body p{font-size:13px;color:var(--text-dim);margin-bottom:4px}
.article-meta{font-size:11px;color:rgba(139,115,85,.5)}

@media(max-width:768px){
  .kb-article-grid{grid-template-columns:1fr}
  .kb-subnav{padding:10px 16px;top:56px}
}

/* ── 选购Hero ── */
.product-hero{
  background:linear-gradient(135deg,var(--espresso),var(--espresso-90));
  padding:50px 24px;text-align:center;
  position:relative;overflow:hidden;
}
.product-hero::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 60% 40%,rgba(196,162,101,.06) 0%,transparent 70%);
}
.product-hero-content{position:relative;z-index:1}
.product-hero h1{color:var(--copper);font-size:clamp(24px,5vw,36px);font-weight:300;margin-bottom:8px}
.product-hero p{color:rgba(245,240,235,.5)}

/* ── Tab 切换 ── */
.shop-tabs{display:flex;gap:8px;margin-bottom:28px;justify-content:center;flex-wrap:wrap}
.shop-tab{
  padding:10px 28px;border-radius:24px;
  border:1px solid var(--copper);background:none;
  color:var(--copper-dim);cursor:pointer;
  font-size:15px;transition:all var(--transition);
  font-family:inherit;
}
.shop-tab:hover{border-color:var(--copper-light);color:var(--copper)}
.shop-tab.active{background:var(--copper);color:var(--white);border-color:var(--copper)}

/* ── 菜单 ── */
.menu-grid{max-width:900px;margin:0 auto}
.menu-cat-label{
  font-size:20px;color:var(--espresso);font-weight:700;
  margin:28px 0 12px;padding-bottom:8px;
  border-bottom:2px solid var(--copper);
}
.menu-items{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.menu-card{
  background:var(--white);border-radius:var(--radius-md);
  padding:14px;box-shadow:0 1px 6px rgba(0,0,0,.04);
  border-left:3px solid var(--copper);
  transition:all var(--transition);
}
.menu-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.menu-card h4{font-size:15px;color:var(--espresso);margin-bottom:3px}
.menu-flavor{font-size:12px;color:var(--text-soft);margin-bottom:4px}
.menu-price{font-size:18px;font-weight:700;color:var(--copper)}

/* ── 客服小印 ── */
.chat-widget{
  position:fixed;bottom:24px;right:24px;z-index:9999;
  font-family:"PingFang SC","Hiragino Sans GB",sans-serif;
}
.chat-bubble{
  width:60px;height:60px;border-radius:50%;
  background:linear-gradient(135deg,var(--copper),var(--copper-dim));
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  cursor:pointer;box-shadow:0 4px 24px rgba(196,162,101,.4);
  transition:all var(--transition);
  animation:chatPulse 2s ease-in-out infinite;
}
@keyframes chatPulse{0%,100%{box-shadow:0 4px 24px rgba(196,162,101,.4)}50%{box-shadow:0 4px 36px rgba(196,162,101,.6);transform:scale(1.03)}}
.chat-bubble:hover{transform:scale(1.08);animation:none}
.chat-icon{font-size:24px}.chat-label{font-size:10px;color:var(--white);margin-top:2px}
.chat-panel{
  display:none;position:absolute;bottom:72px;right:0;
  width:360px;max-height:520px;background:var(--white);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
  flex-direction:column;overflow:hidden;
  animation:chatSlideUp .3s ease-out;
}
@keyframes chatSlideUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.chat-header{
  display:flex;justify-content:space-between;align-items:center;
  padding:14px 18px;
  background:linear-gradient(135deg,var(--espresso),var(--espresso-90));
  color:var(--copper);font-size:15px;font-weight:600;
}
.chat-header button{background:none;border:none;color:var(--text-soft);font-size:18px;cursor:pointer;transition:color var(--transition)}
.chat-header button:hover{color:var(--copper-light)}
.chat-messages{flex:1;overflow-y:auto;padding:16px;max-height:360px;display:flex;flex-direction:column;gap:12px}
.cm-other,.cm-user{display:flex;gap:8px}.cm-user{justify-content:flex-end}
.cm-avatar{width:32px;height:32px;border-radius:50%;background:rgba(196,162,101,.1);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.cm-bubble{max-width:280px;padding:10px 14px;border-radius:12px;font-size:13px;line-height:1.7;word-break:break-word}
.cm-other .cm-bubble{background:var(--cream);color:var(--espresso);border-bottom-left-radius:4px}
.cm-user .cm-bubble{background:var(--copper);color:var(--white);border-bottom-right-radius:4px}
.chat-input-row{display:flex;padding:10px 14px;border-top:1px solid rgba(0,0,0,.06);gap:8px}
.chat-input-row input{flex:1;padding:10px 14px;border:1px solid #ddd;border-radius:20px;font-size:13px;outline:none;font-family:inherit;transition:border-color var(--transition)}
.chat-input-row input:focus{border-color:var(--copper)}
.chat-input-row button{padding:10px 18px;border:none;border-radius:20px;background:var(--copper);color:var(--white);font-size:13px;cursor:pointer;font-weight:600;transition:background var(--transition)}
.chat-input-row button:hover{background:var(--copper-light)}

/* ── 按钮系统 ── */
.btn{
  display:inline-block;
  padding:.7rem 2.2rem;
  background:transparent;
  border:1px solid var(--copper);
  border-radius:var(--radius-sm);
  color:var(--copper);
  font-size:.88rem;letter-spacing:.06em;
  cursor:pointer;transition:all var(--transition);
  text-align:center;
  font-family:inherit;
  position:relative;overflow:hidden;
}
.btn::before{
  content:'';position:absolute;inset:0;
  background:var(--copper);opacity:0;
  transition:opacity var(--transition);z-index:-1;
}
.btn:hover{
  color:var(--white);
  border-color:var(--copper-light);
  box-shadow:0 0 20px rgba(196,162,101,.15);
  transform:translateY(-1px);
}
.btn:hover::before{opacity:1}
.btn-primary{
  background:var(--copper);
  color:var(--white);border-color:var(--copper);
  font-weight:600;
}
.btn-primary::before{background:var(--copper-light)}
.btn-primary:hover{background:var(--copper-light);color:var(--white)}
.btn-lg{padding:.85rem 2.8rem;font-size:1rem}

/* ── CTA ── */
.cta-section{
  background:var(--espresso);text-align:center;
  padding:60px 24px;position:relative;overflow:hidden;
}
.cta-section::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 50% 50%,rgba(196,162,101,.06) 0%,transparent 70%);
}
.cta-section h2{color:var(--copper);font-size:24px;margin-bottom:16px;position:relative}
.cta-section p{color:rgba(245,240,235,.5);margin-bottom:28px;position:relative}

/* ── 页脚 ── */
.footer{
  background:var(--espresso);
  color:var(--text-soft);
  text-align:center;padding:3rem 2rem;
  font-size:.78rem;letter-spacing:.04em;
  border-top:1px solid rgba(196,162,101,.1);
}
.footer-brand{
  font-size:1.1rem;color:var(--cream-light);
  font-weight:600;margin-bottom:.5rem;
}
.footer-info{line-height:2;margin-bottom:1rem}
.footer-divider{
  width:60px;height:1px;
  background:var(--copper-dim);
  margin:1.2rem auto;
}
.footer-affiliate{
  font-size:.68rem;color:var(--copper-dim);
  letter-spacing:.08em;
}
.footer-affiliate a{color:var(--copper)}

/* ── Lightbox ── */
.lightbox{
  display:none;position:fixed;inset:0;z-index:9999;
  background:rgba(0,0,0,.94);
  align-items:center;justify-content:center;
  cursor:pointer;
  animation:fadeIn .3s ease;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.lightbox.open{display:flex}
.lightbox img{max-width:90vw;max-height:85vh;object-fit:contain;animation:zoomIn .3s ease}
@keyframes zoomIn{from{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}
.lightbox-close{
  position:absolute;top:1.5rem;right:1.5rem;
  color:var(--cream);font-size:2.2rem;cursor:pointer;
  background:none;border:none;line-height:1;
  transition:color var(--transition),transform var(--transition);
}
.lightbox-close:hover{color:var(--copper-light);transform:rotate(90deg)}

/* ── 滚动渐现动画 ── */
.reveal{
  opacity:0;transform:translateY(30px);
  transition:opacity .7s ease,transform .7s cubic-bezier(.4,0,.2,1);
}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}

/* ═══════════════════════════════════════
   响应式
   ═══════════════════════════════════════ */
@media(max-width:768px){
  .hero{min-height:70vh}
  .hero-content{padding:3rem 1.2rem 4rem}

  .stats-row{gap:.5rem}
  .stat-card{min-width:90px;padding:.8rem 1rem}
  .stat-num{font-size:1.6rem}

  .section{padding:3rem 1.2rem}
  .section-dark{padding:3rem 0}
  .section-dark .section{padding:0 1.2rem}

  .photo-grid{grid-template-columns:repeat(2,1fr);gap:.6rem}
  .photo-grid.cols-4{grid-template-columns:repeat(2,1fr)}

  /* 移动端导航 */
  .nav-links{
    display:none;position:fixed;top:0;left:0;right:0;bottom:0;
    background:rgba(44,24,16,.98);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    flex-direction:column;gap:0;
    padding:80px 2rem 2rem;
    z-index:99;
    align-items:center;justify-content:flex-start;
    animation:navSlideDown .3s ease-out;
  }
  @keyframes navSlideDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
  .nav-links.open{display:flex}
  .nav-links a{
    padding:1rem 0;font-size:1.1rem;
    border-bottom:1px solid rgba(196,162,101,.1);
    width:100%;text-align:center;
  }
  .nav-links a::after{display:none}
  .nav-toggle{display:block}

  .craft-step{flex:0 0 240px}
  .review-card{flex:0 0 280px}

  .product-grid{grid-template-columns:1fr}
  .kb-grid{grid-template-columns:1fr}
  .menu-items{grid-template-columns:1fr}

  .chat-panel{width:300px;right:0}
  .chat-messages{max-height:280px}

  .brand-bar{font-size:.65rem;padding:.25rem .5rem}
}

@media(max-width:480px){
  .hero-title{font-size:1.8rem}
  .photo-grid{grid-template-columns:1fr}
  .stat-card{min-width:80px;padding:.6rem .8rem}
  .stat-num{font-size:1.4rem}
  .btn{padding:.6rem 1.6rem;font-size:.82rem}
  .chat-panel{width:calc(100vw - 48px)}
}