:root{
  --paper:#f7f1e3;      /* 宣纸米白 */
  --paper-deep:#efe6d0; /* 深一点纸色 */
  --ink:#2a2622;        /* 墨黑 */
  --ink-soft:#5a5246;   /* 淡墨 */
  --ink-faint:#8a8071;  /* 浅墨 */
  --cinnabar:#b03a2e;   /* 朱砂红 */
  --cinnabar-deep:#8e2b21;
  --indigo:#3f5a4e;     /* 黛青 */
  --gold:#a8832f;       /* 鎏金 */
  --line:#d8cbb0;       /* 细墨线 */
  --white:#fffdf7;
  --serif:"仿宋",serif;
  --sans:"Microsoft YaHei",sans-serif;
  --shadow:0 6px 24px rgba(42,38,34,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.7;
  font-weight:300;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:none}
img{max-width:100%;display:block}


/* ===== 顶部通告条 ===== */
.topbar{
  background:var(--ink);
  color:#ddd3bd;
  font-size:13px;
  padding:9px 0;
  letter-spacing:.3px;
}
.topbar .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.topbar a.tel{color:#f2c94c;font-weight:500}
.topbar .addr{opacity:.85}

/* ===== 主导航 ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,241,227,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand .seal{
  width:46px;height:46px;border-radius:10px;
  background:var(--cinnabar);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:22px;font-weight:700;
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.35);
}
.brand .name{line-height:1.25}
.brand .name b{display:block;font-family:var(--serif);font-size:19px;font-weight:700;letter-spacing:1px}
.brand .name small{font-size:11px;color:var(--ink-faint);letter-spacing:2px}
.nav-menu{display:flex;gap:26px;margin-left:auto;flex-wrap:wrap}
.nav-menu a{
  font-size:15px;color:var(--ink);
  position:relative;padding:4px 0;letter-spacing:1px;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--cinnabar);transition:width .25s ease;
}
.nav-menu a:hover{color:var(--cinnabar)}
.nav-menu a:hover::after{width:100%}
.nav-cta{
  background:var(--cinnabar);color:#fff !important;
  padding:9px 20px;border-radius:4px;
  font-weight:500;letter-spacing:1px;
}
.nav-cta:hover{background:var(--cinnabar-deep)}
.menu-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:4px;padding:8px 10px;cursor:pointer;color:var(--ink)}
.menu-toggle svg{display:block}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden}
.hero-img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  filter:saturate(.95);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(247,241,227,.78) 0%,rgba(247,241,227,.45) 38%,rgba(247,241,227,.18) 62%,rgba(247,241,227,.06) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  padding:110px 0 130px;
  max-width:620px;
}
.hero .eyebrow{
  display:inline-block;
  font-family:var(--serif);font-size:14px;letter-spacing:6px;
  color:var(--cinnabar);
  border:1px solid var(--cinnabar);
  padding:6px 16px;border-radius:3px;
  background:rgba(255,253,247,.55);
  margin-bottom:22px;
}
.hero h1{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(36px,6vw,60px);line-height:1.15;
  color:var(--ink);
}
.hero h1 .red{color:var(--cinnabar)}
.hero .sub{
  margin-top:20px;font-size:clamp(15px,2.4vw,19px);
  color:var(--ink-soft);letter-spacing:2px;
  font-family:var(--serif);
}
.hero .desc{
  margin-top:14px;font-size:15px;color:var(--ink-soft);
  max-width:520px;
}
.hero-actions{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;letter-spacing:1px;padding:13px 30px;border-radius:4px;
  cursor:pointer;border:1px solid transparent;transition:all .2s ease;
  font-family:var(--sans);font-weight:500;
}
.btn-primary{background:var(--cinnabar);color:#fff}
.btn-primary:hover{background:var(--cinnabar-deep);transform:translateY(-2px)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:rgba(255,253,247,.5)}
.btn-ghost:hover{background:var(--ink);color:var(--white)}
.hero-stats{
  display:flex;gap:40px;margin-top:46px;flex-wrap:wrap;
}
.stat{position:relative;padding-left:18px}
.stat::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;background:var(--cinnabar)}
.stat b{font-family:var(--serif);font-size:26px;color:var(--cinnabar);font-weight:700}
.stat span{display:block;font-size:12px;color:var(--ink-faint);letter-spacing:1px}

/* ===== 区块通用 ===== */
.section{padding:84px 0}
.section.alt{background:var(--paper-deep)}
.section-head{text-align:center;margin-bottom:52px}
.sec-tag{
  font-family:var(--serif);color:var(--cinnabar);font-size:13px;
  letter-spacing:5px;display:inline-block;margin-bottom:12px;
}
.section-head h2{
  font-family:var(--serif);font-weight:700;font-size:clamp(26px,3.6vw,36px);
  color:var(--ink);letter-spacing:2px;
}
.section-head .rule{width:60px;height:3px;background:var(--cinnabar);margin:18px auto 0;position:relative}
.section-head .rule::after{content:"";position:absolute;left:50%;top:50%;width:8px;height:8px;background:var(--gold);border-radius:50%;transform:translate(-50%,-50%)}
.section-head p{margin-top:14px;color:var(--ink-soft);font-size:15px;max-width:640px;margin-left:auto;margin-right:auto}

/* ===== 核心业务 ===== */
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.biz-card{
  background:var(--white);border:1px solid var(--line);
  border-radius:6px;padding:34px 26px;text-align:center;
  transition:all .25s ease;position:relative;
}
.biz-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--cinnabar)}
.biz-card .icon{
  width:70px;height:70px;margin:0 auto 20px;
  border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--cinnabar);background:var(--paper);
  transition:all .25s ease;
}
.biz-card:hover .icon{background:var(--cinnabar);color:#fff;border-color:var(--cinnabar)}
.biz-card h3{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);letter-spacing:1px}
.biz-card p{font-size:13.5px;color:var(--ink-soft);margin-top:12px;min-height:60px}
.biz-card .more{
  display:inline-block;margin-top:18px;font-size:13px;color:var(--cinnabar);
  border-bottom:1px solid var(--cinnabar);padding-bottom:2px;
}
.biz-card .more:hover{color:var(--cinnabar-deep)}

/* ===== 官方频道 ===== */
.channel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.channel{
  background:var(--white);border:1px solid var(--line);border-radius:6px;
  padding:28px 30px;display:flex;gap:20px;align-items:flex-start;
  transition:all .25s ease;position:relative;
}
.channel:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--gold)}
.channel .chan-icon{
  width:56px;height:56px;flex-shrink:0;border-radius:6px;
  background:var(--ink);color:#e8ddc2;
  display:flex;align-items:center;justify-content:center;
}
.channel:nth-child(2) .chan-icon{background:var(--cinnabar)}
.channel:nth-child(3) .chan-icon{background:var(--indigo)}
.channel:nth-child(4) .chan-icon{background:var(--gold)}
.channel h3{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink)}
.channel h3 small{display:block;font-family:var(--sans);font-size:12px;color:var(--cinnabar);font-weight:400;margin-top:2px;letter-spacing:1px}
.channel p{font-size:13.5px;color:var(--ink-soft);margin-top:8px}
.channel .chan-actions{display:flex;gap:14px;margin-top:14px;flex-wrap:wrap}
.channel .link-tag{font-size:13px;color:var(--cinnabar);border-bottom:1px solid var(--cinnabar);padding-bottom:1px}
.channel .link-tag:hover{color:var(--cinnabar-deep)}
.channel .tel-tag{font-size:13px;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:1px}
.channel .tel-tag:hover{color:var(--cinnabar)}

/* ===== 理念宣传 ===== */
.philosophy{position:relative;overflow:hidden}
.philosophy .ink-bg{position:absolute;inset:0;opacity:.9}
.philosophy .ink-bg img{width:100%;height:100%;object-fit:cover}
.philosophy::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(120deg,rgba(42,38,34,.88) 0%,rgba(42,38,34,.72) 45%,rgba(42,38,34,.55) 100%);
}
.philosophy-inner{position:relative;z-index:2;display:flex;gap:40px;align-items:center}
.philosophy-text{flex:1;max-width:560px}
.philosophy-text .sec-tag{color:#e8b64c}
.philosophy-text h2{font-family:var(--serif);font-size:clamp(24px,3.4vw,34px);color:var(--white);font-weight:700;line-height:1.4;letter-spacing:2px}
.philosophy-text h2 .gold{color:#e8b64c}
.philosophy-text p{color:#d8cfb8;font-size:15px;margin-top:18px}
.philosophy-list{flex:1;display:flex;flex-direction:column;gap:16px}
.philosophy-item{
  background:rgba(255,253,247,.08);border:1px solid rgba(232,182,76,.35);
  border-radius:6px;padding:20px 24px;
  border-left:4px solid #e8b64c;
}
.philosophy-item h4{font-family:var(--serif);font-size:17px;color:var(--white);font-weight:600}
.philosophy-item p{font-size:13px;color:#cfc5ab;margin-top:6px}

/* ===== 新闻资讯 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:var(--white);border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:all .25s ease}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-thumb{overflow:hidden;position:relative}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.06)}
.news-cat{
  position:absolute;left:14px;top:14px;z-index:2;
  background:var(--cinnabar);color:#fff;font-size:12px;
  padding:4px 12px;border-radius:3px;letter-spacing:1px;
}
.news-body{padding:22px 24px}
.news-body h3{font-family:var(--serif);font-size:17px;font-weight:600;color:var(--ink);line-height:1.55}
.news-body .meta{display:flex;gap:16px;align-items:center;margin-top:14px;font-size:12px;color:var(--ink-faint)}
.news-body .meta .date{display:flex;align-items:center;gap:5px}
.news-body .meta .views{display:flex;align-items:center;gap:5px;margin-left:auto}

/* ===== 联系与关于 ===== */
.contact-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.contact-left h2{font-family:var(--serif);font-size:clamp(24px,3.2vw,32px);font-weight:700;color:var(--ink);letter-spacing:2px}
.contact-left>p{color:var(--ink-soft);margin-top:16px;font-size:15px;max-width:480px}
.contact-items{display:flex;flex-direction:column;gap:20px;margin-top:34px}
.contact-item{display:flex;gap:18px;align-items:flex-start}
.contact-item .c-icon{
  width:50px;height:50px;flex-shrink:0;border-radius:50%;
  border:1px solid var(--cinnabar);color:var(--cinnabar);
  display:flex;align-items:center;justify-content:center;background:var(--white);
}
.contact-item h4{font-family:var(--serif);font-size:15px;font-weight:600;color:var(--ink)}
.contact-item p{font-size:15px;color:var(--ink-soft);margin-top:2px}
.contact-item p b{color:var(--cinnabar);font-family:var(--serif);font-size:18px}
.contact-card{
  background:var(--ink);color:#e8ddc2;border-radius:8px;padding:40px;
  position:relative;overflow:hidden;
}
.contact-card::before{content:"";position:absolute;top:0;left:40px;right:40px;height:3px;background:linear-gradient(90deg,transparent,rgba(232,182,76,.8),transparent);pointer-events:none}
.contact-card h3{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--white);position:relative;z-index:2}
.contact-card .big-tel{
  font-family:var(--serif);font-size:clamp(24px,3.2vw,32px);font-weight:700;
  color:#e8b64c;margin-top:14px;letter-spacing:1px;position:relative;z-index:2;
}
.contact-card p{font-size:14px;color:#cfc5ab;margin-top:8px;position:relative;z-index:2}
.contact-card .btn{margin-top:26px;position:relative;z-index:2}

/* ===== Footer ===== */
.site-footer{background:#201c18;color:#bdb29a;padding:56px 0 30px;font-size:13.5px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand h4{font-family:var(--serif);font-size:20px;color:#e8ddc2;display:flex;align-items:center;gap:10px}
.footer-brand h4 .seal{width:34px;height:34px;border-radius:8px;background:var(--cinnabar);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:16px}
.footer-brand p{margin-top:14px;line-height:1.9}
.footer-col h5{font-family:var(--serif);color:#e8ddc2;font-size:15px;letter-spacing:2px;margin-bottom:18px}
.footer-col a{display:block;color:#bdb29a;margin-bottom:10px}
.footer-col a:hover{color:#e8b64c}
.footer-bottom{border-top:1px solid rgba(189,178,154,.2);margin-top:44px;padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px}

/* ===== 悬浮返回/咨询 ===== */
.float-wrap{position:fixed;right:24px;bottom:30px;z-index:90;display:flex;flex-direction:column;gap:12px}
.float-btn{
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;box-shadow:var(--shadow);border:none;
  transition:transform .2s ease;
}
.float-btn:hover{transform:translateY(-3px)}
.float-phone{background:var(--cinnabar);color:#fff}
.float-top{background:var(--white);color:var(--ink);border:1px solid var(--line)}
.float-top.hidden{opacity:0;pointer-events:none}

/* ===== Toast ===== */
.toast{
  position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:12px 26px;border-radius:6px;
  font-size:14px;z-index:200;opacity:0;transition:all .3s ease;
  box-shadow:var(--shadow);letter-spacing:.5px;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .biz-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .menu-toggle{display:block}
  .nav-menu{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    flex-direction:column;padding:14px 6%;gap:6px;
  }
  .nav-menu.open{display:flex}
  .nav-menu a{padding:10px 0;border-bottom:1px dashed var(--line)}
  .nav-cta{margin-top:10px;text-align:center}
  .hero-inner{padding:70px 0 90px}
  .channel-grid{grid-template-columns:1fr}
  .philosophy-inner{flex-direction:column}
  .contact-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .biz-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:60px 0}
}