/* ============================================================
   五味源 · 香重把控  —  styles--5.css
   极简 / 高端 / 宣纸底色
   内容区 1400px · 标题 36px · 正文 14px
   ============================================================ */

:root{
  --paper:#f4efe6;          /* 宣纸底色 */
  --paper-deep:#ece4d3;
  --ink:#2b2016;            /* 主墨色 */
  --body:#4a3b2a;           /* 正文色 */
  --accent:#8B1F2A;         /* 印章红 */
  --gold:#a8844a;           /* 暖金 */
  --line:#d9cdb6;
  --shadow:0 10px 30px rgba(60,40,20,.18);
  --shadow-hover:0 18px 44px rgba(60,40,20,.32);
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--paper);
  color:var(--body);
  font-size:14px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{text-decoration:none;color:inherit;}
h1,h2,h3,h4{font-family:"Noto Serif SC",serif;color:var(--ink);font-weight:700;}

/* ============ 导航栏 ============ */
.navbar{
  position:sticky;top:0;z-index:100;
  background:rgba(244,239,230,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  width:1400px;max-width:calc(100% - 48px);
  margin:0 auto;
  height:72px;
  display:flex;align-items:center;justify-content:space-between;
}

/* Logo */
.logo{display:flex;align-items:center;gap:12px;}
.logo-seal{
  width:44px;height:44px;border-radius:6px;
  background:var(--accent);color:var(--paper);
  font-family:"Noto Serif SC",serif;font-size:24px;font-weight:900;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 10px rgba(139,31,42,.3);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text em{
  font-family:"Noto Serif SC",serif;font-style:normal;
  font-size:20px;font-weight:900;color:var(--ink);letter-spacing:2px;
}
.logo-text small{
  font-size:10px;letter-spacing:2px;color:var(--gold);margin-top:2px;
}

/* 菜单 */
.nav-list{display:flex;list-style:none;gap:8px;}
.nav-item{position:relative;}
.nav-item>a{
  display:block;padding:10px 18px;
  font-size:15px;color:var(--ink);
  letter-spacing:1px;
  transition:color .25s;
}
.nav-item>a:hover{color:var(--accent);}
.nav-item>a .arrow{font-size:10px;margin-left:4px;opacity:.6;}
.nav-item>a.active{color:var(--accent);}

/* 二级菜单 —— 从上往下展开 */
.submenu{
  position:absolute;top:calc(100% + 8px);left:50%;
  transform:translateX(-50%) translateY(-12px);
  min-width:160px;
  background:#fbf7ee;
  border:1px solid var(--line);
  list-style:none;padding:8px 0;
  box-shadow:0 12px 30px rgba(60,40,20,.15);
  opacity:0;visibility:hidden;
  transition:opacity .3s ease, transform .3s ease, visibility .3s;
}
.submenu::before{
  content:"";position:absolute;top:-6px;left:50%;
  transform:translateX(-50%) rotate(45deg);
  width:10px;height:10px;background:#fbf7ee;
  border-left:1px solid var(--line);border-top:1px solid var(--line);
}
.has-sub:hover .submenu{
  opacity:1;visibility:visible;
  transform:translateX(-50%) translateY(0);
}
.submenu li a{
  display:block;padding:9px 22px;
  font-size:14px;color:var(--body);
  transition:all .2s;
}
.submenu li a:hover{
  background:var(--paper-deep);color:var(--accent);
  padding-left:28px;
}
.submenu li a.active{color:var(--accent);font-weight:500;}

/* ============ Hero ============ */
.hero{
  padding:110px 24px 100px;
  text-align:center;
  background:
    radial-gradient(circle at 50% 120%, rgba(168,132,74,.15), transparent 60%),
    var(--paper);
}
.hero-eyebrow{
  font-size:12px;letter-spacing:6px;color:var(--gold);
  margin-bottom:24px;
}
.hero-title{
  font-size:56px;font-weight:900;letter-spacing:12px;
  color:var(--ink);
  margin-bottom:20px;
}
.hero-line{
  width:60px;height:2px;background:var(--accent);
  margin:0 auto 24px;
}
.hero-sub{
  font-family:"Noto Serif SC",serif;
  font-size:20px;color:var(--body);letter-spacing:4px;
  margin-bottom:28px;
}
.hero-desc{
  font-size:14px;color:var(--body);line-height:2;
  max-width:560px;margin:0 auto;opacity:.85;
}

/* ============ 通用 section ============ */
.wrap{width:1400px;max-width:calc(100% - 48px);margin:0 auto;}
section{padding:90px 0;}
.sec-head{text-align:center;margin-bottom:56px;}
.sec-head h2{
  font-size:36px;letter-spacing:4px;margin-bottom:14px;
}
.sec-head p{
  font-size:14px;color:var(--body);opacity:.75;letter-spacing:1px;
}
.sec-head.left{text-align:left;}
.sec-head.left h2{font-size:36px;}

/* ============ 1. 投放四时机 ============ */
.timing{background:var(--paper);}
.timing-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
}
.t-card{
  background:#fbf7ee;
  border:1px solid var(--line);
  overflow:hidden;
  transition:box-shadow .35s, transform .35s;
}
.t-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-6px);
}
.t-img{height:200px;overflow:hidden;}
.t-img img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s;
}
.t-card:hover .t-img img{transform:scale(1.06);}
.t-body{padding:24px 22px 28px;}
.t-no{
  font-family:"Noto Serif SC",serif;
  font-size:14px;color:var(--gold);letter-spacing:2px;
}
.t-body h3{
  font-size:20px;margin:8px 0 10px;letter-spacing:2px;
}
.t-body p{font-size:14px;line-height:1.8;opacity:.85;}

/* ============ 2. 用量避坑 左右 ============ */
.dose{background:var(--paper-deep);}
.dose-inner{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
}
.dose-img{
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:box-shadow .35s;
}
.dose-img:hover{box-shadow:var(--shadow-hover);}
.dose-img img{width:100%;height:480px;object-fit:cover;}

.pit-list{list-style:none;margin-top:20px;}
.pit-list li{
  padding:20px 0;
  border-bottom:1px dashed var(--line);
}
.pit-list li:last-child{border-bottom:none;}
.pit-list b{
  display:block;font-family:"Noto Serif SC",serif;
  font-size:18px;color:var(--accent);margin-bottom:6px;letter-spacing:2px;
}
.pit-list p{font-size:14px;line-height:1.9;}

/* ============ 3. 君臣佐使比例 ============ */
.ratio-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:1px solid var(--line);
  background:#fbf7ee;
}
.r-item{
  padding:40px 28px;text-align:center;
  border-right:1px solid var(--line);
  transition:background .3s;
}
.r-item:last-child{border-right:none;}
.r-item:hover{background:var(--paper-deep);}
.r-pct{
  font-family:"Noto Serif SC",serif;
  font-size:48px;font-weight:900;
  display:block;margin-bottom:12px;
}
.r-jun .r-pct{color:var(--accent);}
.r-chen .r-pct{color:var(--gold);}
.r-zuo .r-pct{color:#6b8063;}
.r-shi .r-pct{color:#8a7560;}
.r-item h3{font-size:18px;margin-bottom:10px;letter-spacing:2px;}
.r-item p{font-size:14px;line-height:1.9;opacity:.8;}

/* ============ 4. 家用参考用量 ============ */
.ref{background:var(--paper);}
.ref-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.ref-card{
  background:#fbf7ee;border:1px solid var(--line);
  padding:28px 26px;
  transition:box-shadow .3s, transform .3s;
}
.ref-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.ref-card h4{
  font-size:18px;letter-spacing:3px;margin-bottom:8px;
}
.ref-num{
  display:inline-block;
  font-family:"Noto Serif SC",serif;
  font-size:22px;color:var(--accent);font-weight:700;
  margin-bottom:10px;
}
.ref-card p{font-size:14px;opacity:.8;line-height:1.8;}

/* ============ Footer ============ */
.foot{
  padding:40px 24px 30px;
  text-align:center;
  background:var(--paper-deep);
}
.foot-line{
  width:40px;height:1px;background:var(--line);
  margin:0 auto 20px;
}
.foot p{font-size:12px;color:var(--body);letter-spacing:1px;opacity:.7;}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .timing-grid{grid-template-columns:1fr 1fr;}
  .ratio-bar{grid-template-columns:1fr 1fr;}
  .r-item{border-bottom:1px solid var(--line);}
  .ref-grid{grid-template-columns:1fr 1fr;}
  .dose-inner{grid-template-columns:1fr;gap:40px;}
  .dose-img img{height:340px;}
}
@media (max-width:640px){
  .nav-inner{height:auto;flex-direction:column;padding:16px 0;}
  .timing-grid,.ref-grid{grid-template-columns:1fr;}
  .hero-title{font-size:38px;letter-spacing:6px;}
  section{padding:60px 0;}
}