/* ============================================================
   润元兴官网 · 设计系统 v1
   品牌调性：高端新会陈皮 —— 宣纸米白 × 朱砂红 × 陈皮金
   合规：全站简体中文；不引用任何 Google 字体/境外资源
   ============================================================ */
:root{
  --paper:#f7f2e9;        /* 宣纸米白 */
  --card:#fffdf8;         /* 卡面 */
  --ink:#2b2016;          /* 墨褐主文字 */
  --ink-2:#6b5d4d;        /* 次级文字 */
  --ink-3:#9b8c78;        /* 弱文字 */
  --red:#a63a1e;          /* 朱砂红（品牌主色） */
  --red-deep:#7e2a13;     /* 深朱 */
  --gold:#b98a3c;         /* 陈皮金 */
  --gold-soft:#d9c193;    /* 淡金 */
  --line:#e4d9c4;         /* 分隔线 */
  --dark:#201811;         /* 干仓深色块 */
  --dark-2:#2e241a;
  --serif:"Songti SC","STSong","NSimSun","SimSun","Noto Serif SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- 顶部 ---------- */
.topbar{background:var(--dark);color:var(--gold-soft);font-size:13px;
  text-align:center;padding:7px 12px;letter-spacing:1px;line-height:1.6}
.topbar b{color:#e8d5ae;font-weight:600}
header.site{position:sticky;top:0;z-index:100;background:rgba(247,242,233,.96);
  backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:flex;align-items:center;gap:11px;margin-right:6px}
.brand svg{width:42px;height:42px;flex:none}
.brand-name{font-family:var(--serif);font-size:23px;letter-spacing:5px;color:var(--red-deep);font-weight:700}
.brand-sub{font-size:10.5px;letter-spacing:2.6px;color:var(--ink-3);margin-top:1px;white-space:nowrap}
.nav-links{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.nav-links a{font-size:14.5px;padding:8px 11px;border-radius:6px;color:var(--ink-2);
  letter-spacing:1px;transition:.18s}
.nav-links a:hover{color:var(--red);background:#f0e7d6}
.nav-cta{display:flex;align-items:center;gap:10px;flex:none}
.nav-phone{font-size:13.5px;color:var(--ink-2);letter-spacing:.5px}
.nav-phone b{color:var(--red);font-size:15.5px;letter-spacing:.5px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:4px;font-size:15px;letter-spacing:2px;cursor:pointer;
  padding:13px 30px;transition:.18s;border:1px solid transparent}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-deep)}
.btn-gold{border-color:var(--gold);color:var(--gold);background:transparent}
.btn-gold:hover{background:var(--gold);color:#fff}
.btn-sm{padding:9px 18px;font-size:13.5px;letter-spacing:1px}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:640px;display:flex;align-items:center;
  color:#fff;isolation:isolate;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:-2}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(24,14,6,.88) 0%,rgba(28,17,8,.72) 52%,rgba(30,18,8,.45) 100%)}
.hero-inner{padding:110px 0 130px;max-width:640px}
.hero-kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;
  letter-spacing:4px;color:var(--gold-soft);border:1px solid rgba(217,193,147,.5);
  padding:6px 16px;border-radius:2px;margin-bottom:26px}
.hero h1{font-family:var(--serif);font-size:52px;line-height:1.28;font-weight:700;
  letter-spacing:6px;margin-bottom:8px}
.hero h1 span{color:#e4b96a}
.hero-slogan{font-family:var(--serif);font-size:20px;letter-spacing:8px;
  color:#f6ecd2;margin-bottom:22px;text-shadow:0 1px 10px rgba(0,0,0,.55)}
.hero-desc{font-size:15.5px;color:#f0e7d3;max-width:520px;margin-bottom:36px;
  text-shadow:0 1px 8px rgba(0,0,0,.5)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{position:absolute;left:0;right:0;bottom:0;background:rgba(18,11,5,.68);
  border-top:1px solid rgba(217,193,147,.25)}
.hero-stats .container{display:grid;grid-template-columns:repeat(4,1fr);padding:20px 24px}
.stat b{display:block;font-family:var(--serif);font-size:25px;color:#e4b96a;letter-spacing:1px}
.stat b i{font-style:normal;font-size:14px;margin-left:2px}
.stat span{font-size:12.5px;color:#cdbf9f;letter-spacing:2px}

/* ---------- 信任背书条 ---------- */
.trust{background:var(--card);border-bottom:1px solid var(--line)}
.trust .container{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 34px;padding:17px 24px}
.trust li{font-size:13.5px;color:var(--ink-2);letter-spacing:1px;display:flex;align-items:center;gap:8px}
.trust li::before{content:"";width:6px;height:6px;background:var(--gold);
  transform:rotate(45deg);flex:none}

/* ---------- 通用 Section ---------- */
section{padding:88px 0}
.sec-head{text-align:center;max-width:680px;margin:0 auto 52px}
.sec-num{font-family:Georgia,serif;font-size:13px;color:var(--gold);letter-spacing:4px}
.sec-head h2{font-family:var(--serif);font-size:34px;letter-spacing:5px;
  margin:10px 0 14px;font-weight:700;color:var(--ink)}
.sec-head p{font-size:15px;color:var(--ink-2)}
.sec-line{width:46px;height:2px;background:var(--red);margin:16px auto 0}

/* ---------- 产区 ---------- */
.origin{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.origin-pic{position:relative}
.origin-pic img{border-radius:6px;width:100%;aspect-ratio:4/4.4;object-fit:cover}
.origin-pic::before{content:"";position:absolute;inset:-14px 14px 14px -14px;
  border:1px solid var(--gold-soft);border-radius:6px;z-index:-1}
.origin-tag{position:absolute;left:18px;top:18px;background:rgba(32,24,17,.78);
  color:#e8d5ae;font-size:12.5px;letter-spacing:3px;padding:7px 14px;border-radius:2px}
.origin-txt h3{font-family:var(--serif);font-size:25px;letter-spacing:2px;margin-bottom:6px}
.origin-txt .en{font-size:12px;letter-spacing:3px;color:var(--gold);margin-bottom:20px}
.origin-txt p{font-size:15px;color:var(--ink-2);margin-bottom:16px}
.origin-duo{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:24px 0 28px}
.duo-card{background:var(--card);border:1px solid var(--line);border-top:3px solid var(--red);
  padding:20px 22px;border-radius:0 0 6px 6px}
.duo-card h4{font-family:var(--serif);font-size:19px;letter-spacing:2px;color:var(--red-deep)}
.duo-card small{font-size:12.5px;color:var(--gold);letter-spacing:1px;display:block;margin:2px 0 10px}
.duo-card p{font-size:13.5px;color:var(--ink-2);line-height:1.75}

/* ---------- 十大标准 ---------- */
.standards{background:var(--dark);color:#efe6d2;position:relative}
.standards .sec-head h2{color:#f3ead6}
.standards .sec-head p{color:#bba983}
.std-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(217,193,147,.16)}
.std-item{background:var(--dark-2);padding:30px 28px;transition:.2s}
.std-item:hover{background:#3a2d1e}
.std-item b{display:flex;align-items:baseline;gap:10px;font-family:var(--serif);
  font-size:19px;letter-spacing:2px;color:#e8d5ae}
.std-item b em{font-style:normal;font-family:Georgia,serif;font-size:13px;color:var(--gold)}
.std-item p{font-size:13.5px;color:#b3a284;margin-top:8px}
.std-pledge{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;margin-top:44px}
.pledge{border:1px solid rgba(217,193,147,.45);color:#e8d5ae;padding:12px 26px;
  font-family:var(--serif);font-size:17px;letter-spacing:4px;border-radius:2px}

/* ---------- 产品 ---------- */
.series-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-bottom:56px}
.series{background:var(--card);border:1px solid var(--line);padding:30px 20px 26px;
  text-align:center;border-radius:6px;transition:.2s;position:relative}
.series:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(60,40,15,.1);
  border-color:var(--gold-soft)}
.series i{font-style:normal;font-family:Georgia,serif;font-size:12px;color:var(--gold);letter-spacing:2px}
.series h3{font-family:var(--serif);font-size:23px;letter-spacing:4px;color:var(--red-deep);margin:8px 0 4px}
.series small{font-size:12.5px;color:var(--gold);letter-spacing:2px}
.series p{font-size:13px;color:var(--ink-2);margin-top:12px;text-align:left}
.products-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:26px}
.products-head h3{font-family:var(--serif);font-size:23px;letter-spacing:3px}
.products-head a{font-size:13.5px;color:var(--red);letter-spacing:1px}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.product{background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.2s}
.product:hover{box-shadow:0 14px 30px rgba(60,40,15,.12);transform:translateY(-3px)}
.product figure{aspect-ratio:4/3;overflow:hidden}
.product img{width:100%;height:100%;object-fit:cover;transition:.4s}
.product:hover img{transform:scale(1.04)}
.product .body{padding:18px 20px 20px}
.product small{font-size:12px;color:var(--gold);letter-spacing:2px}
.product h4{font-family:var(--serif);font-size:19px;letter-spacing:2px;margin:4px 0 8px}
.product p{font-size:13.5px;color:var(--ink-2)}

/* ---------- 金仓 ---------- */
.warehouse{background:linear-gradient(160deg,var(--dark) 0%,#332416 100%);
  color:#efe6d2;position:relative;overflow:hidden}
.warehouse::after{content:"仓";position:absolute;right:-30px;bottom:-70px;
  font-family:var(--serif);font-size:340px;color:rgba(217,193,147,.05);line-height:1}
.warehouse .sec-head h2{color:#f3ead6}
.warehouse .sec-head p{color:#bba983}
.wh-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center;position:relative;z-index:1}
.wh-pic{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.wh-pic img{border-radius:6px;aspect-ratio:3/3.6;object-fit:cover;width:100%}
.wh-txt h3{font-family:var(--serif);font-size:27px;letter-spacing:3px;color:#e8d5ae;margin-bottom:18px}
.wh-txt p{font-size:14.5px;color:#c3b28d;margin-bottom:14px}
.wh-nums{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:26px 0 30px}
.wh-num{border:1px solid rgba(217,193,147,.3);border-radius:4px;padding:16px 18px}
.wh-num b{font-family:var(--serif);font-size:23px;color:#e4b96a}
.wh-num span{display:block;font-size:12.5px;color:#a8977a;letter-spacing:1px;margin-top:3px}

/* ---------- 雅集/书院 ---------- */
.events-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.event{background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.2s}
.event:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(60,40,15,.1)}
.event figure{aspect-ratio:4/3;overflow:hidden}
.event img{width:100%;height:100%;object-fit:cover;transition:.4s}
.event:hover img{transform:scale(1.05)}
.event .body{padding:15px 17px 18px}
.event time{font-size:12px;color:var(--ink-3);letter-spacing:1px}
.event h4{font-size:15px;line-height:1.6;margin-top:6px;font-weight:600;color:var(--ink)}
.events-more{text-align:center;margin-top:40px}

/* ---------- 学院 ---------- */
.knowledge{background:#f2ecdf}
.kb-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.kb{background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.2s;display:block}
.kb:hover{border-color:var(--gold)}
.kb figure{aspect-ratio:16/10;overflow:hidden}
.kb img{width:100%;height:100%;object-fit:cover}
.kb .body{padding:16px 18px 20px}
.kb small{font-size:12px;color:var(--red);letter-spacing:2px}
.kb h4{font-size:15.5px;line-height:1.65;margin-top:6px;font-weight:600}

/* ---------- 企业服务 ---------- */
.b2b-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.b2b{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--gold);
  padding:28px 26px;border-radius:0 6px 6px 0}
.b2b h4{font-family:var(--serif);font-size:19px;letter-spacing:2px;margin-bottom:10px}
.b2b p{font-size:13.5px;color:var(--ink-2)}
.b2b em{display:block;font-style:normal;margin-top:14px;font-size:12.5px;color:var(--gold);letter-spacing:1px}

/* ---------- 城市/门店 ---------- */
.cities{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.city{background:var(--card);border:1px solid var(--line);padding:14px 30px;
  border-radius:40px;font-size:15px;letter-spacing:2px;color:var(--ink-2);transition:.2s}
.city:hover{border-color:var(--red);color:var(--red)}
.city b{font-family:var(--serif);color:var(--ink);margin-right:6px}
.store-note{text-align:center;font-size:13.5px;color:var(--ink-3);margin-top:22px;letter-spacing:1px}

/* ---------- 询盘 ---------- */
.contact{background:var(--card);border-top:1px solid var(--line)}
.contact-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px}
.contact-info h3{font-family:var(--serif);font-size:25px;letter-spacing:3px;margin-bottom:14px}
.contact-info>p{font-size:14.5px;color:var(--ink-2);margin-bottom:26px}
.c-item{border-top:1px dashed var(--line);padding:15px 0;font-size:14px;color:var(--ink-2)}
.c-item b{color:var(--ink);margin-right:12px;letter-spacing:2px;font-weight:600}
.contact-form{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:34px 34px 30px}
.contact-form h4{font-family:var(--serif);font-size:19px;letter-spacing:3px;margin-bottom:20px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.f-group{margin-bottom:14px}
.f-group label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px;letter-spacing:1px}
.f-group input,.f-group select,.f-group textarea{width:100%;border:1px solid var(--line);
  background:#fff;border-radius:4px;padding:11px 13px;font-size:14px;font-family:var(--sans);color:var(--ink)}
.f-group input:focus,.f-group select:focus,.f-group textarea:focus{outline:2px solid var(--gold-soft);border-color:var(--gold)}
.f-group textarea{min-height:92px;resize:vertical}
.form-ok{display:none;margin-top:14px;background:#eef6e4;border:1px solid #cfe3b6;color:#3c6212;
  border-radius:4px;padding:11px 14px;font-size:13.5px}
.contact-form .btn{width:100%;margin-top:6px}
.form-tip{font-size:12px;color:var(--ink-3);margin-top:12px;text-align:center;letter-spacing:1px}

/* ---------- 页脚 ---------- */
footer.site{background:var(--dark);color:#a8977a;padding:56px 0 30px;font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:36px;
  border-bottom:1px solid rgba(217,193,147,.15)}
.foot-brand .brand-name{color:#e8d5ae}
.foot-brand p{margin-top:14px;line-height:1.9}
footer h5{font-size:14.5px;color:#e8d5ae;letter-spacing:3px;margin-bottom:16px;font-weight:600}
footer li{margin:7px 0}
footer a:hover{color:#e8d5ae}
.foot-bottom{padding-top:22px;text-align:center;font-size:12.5px;color:#7c6d55;letter-spacing:1px}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .nav-links{display:none}
  .hero h1{font-size:38px;letter-spacing:4px}
  .hero-stats .container{grid-template-columns:repeat(2,1fr);gap:12px}
  .origin,.wh-grid,.contact-wrap{grid-template-columns:1fr;gap:36px}
  .series-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid,.kb-grid{grid-template-columns:repeat(2,1fr)}
  .events-grid{grid-template-columns:repeat(2,1fr)}
  .b2b-grid{grid-template-columns:1fr}
  .std-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  section{padding:60px 0}
  .sec-head h2{font-size:26px;letter-spacing:3px}
  .hero{min-height:0;display:block}
  .hero-inner{padding:70px 0 46px}
  .hero-stats{position:static}
  .hero h1{font-size:31px}
  .hero-slogan{font-size:14px;letter-spacing:3px;line-height:2;white-space:normal}
  .hero-desc{font-size:14.5px}
  .hero-stats .stat b{font-size:21px}
  .hero-stats .container{padding:16px 20px}
  .series-grid,.product-grid,.kb-grid,.events-grid,.f-row,.origin-duo,.wh-nums,.wh-pic{grid-template-columns:1fr}
  .std-grid{grid-template-columns:1fr}
  .wh-pic{grid-template-columns:1fr 1fr}
  .contact-form{padding:24px 18px}
  .nav-phone{display:none}
  /* 移动端头部：背书条收为单行、品牌副标不折行、导航留白收紧 */
  .tb-hide{display:none}
  .topbar{font-size:12px;letter-spacing:.4px;line-height:1.6;padding:8px 14px}
  .nav{height:auto;padding:12px 0;gap:12px}
  .brand{gap:9px;margin-right:0;min-width:0}
  .brand svg{width:36px;height:36px}
  .brand-name{font-size:20px;letter-spacing:3px}
  .brand-sub{font-size:9.5px;letter-spacing:1.3px}
  .nav-cta{margin-left:auto;gap:0}
  .nav-cta .btn-sm{padding:9px 15px;font-size:13px;letter-spacing:.5px}
}
@media print{
  header.site,.topbar,.hero-actions,.contact-form,.nav-cta{display:none}
}