/* ============ 基础 ============ */
:root{
  --ink:#2A2E2B;
  --ink-soft:#4C554F;
  --ink-faint:#7B837C;
  --paper:#F6F1E7;
  --paper-deep:#ECE3D2;
  --paper-line:#D8CDB6;
  --jade:#5E7C6B;
  --jade-deep:#3F5A4B;
  --gold:#B08D57;
  --seal:#9C4A3C;
  --font-display:"Kaiti SC","STKaiti","KaiTi","Songti SC",serif;
  --font-body:"Songti SC","STSong","SimSun","PingFang SC",serif;
  --font-sans:"PingFang SC","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;}

.container{max-width:1160px;margin:0 auto;padding:0 28px;}
.strong{color:var(--jade-deep);font-weight:600;}

/* ============ 导航 ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .35s ease, box-shadow .35s ease;
}
.nav-inner{
  max-width:1160px;margin:0 auto;padding:0 28px;height:68px;
  display:flex;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#F3ECDD;transition:color .35s;}
.brand-mark{width:34px;height:34px;color:var(--jade);transition:color .35s;}
.brand-name{font-family:var(--font-display);font-size:20px;letter-spacing:.12em;}
.nav-menu{display:flex;gap:32px;}
.nav-menu a{
  color:rgba(243,236,221,.92);text-decoration:none;font-size:15px;
  letter-spacing:.08em;padding:6px 0;position:relative;transition:color .3s;
  text-shadow:0 1px 6px rgba(0,0,0,.45);
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1.5px;
  background:var(--gold);transition:width .3s;
}
.nav-menu a:hover{color:#fff;}
.nav-menu a:hover::after{width:100%;}
.nav.scrolled{background:rgba(246,241,231,.96);backdrop-filter:blur(10px);box-shadow:0 1px 0 rgba(0,0,0,.07);}
.nav.scrolled .brand{color:var(--ink);}
.nav.scrolled .brand-mark{color:var(--jade);}
.nav.scrolled .nav-menu a{color:var(--ink-soft);}
.nav.scrolled .nav-menu a:hover{color:var(--jade-deep);}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;}
.nav-toggle span{width:24px;height:2px;background:#F3ECDD;display:block;transition:.3s;}
.nav.scrolled .nav-toggle span{background:var(--ink);}

/* ============ Hero ============ */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;
  overflow:hidden;text-align:center;color:#F3ECDD;
}
.hero-bg{
  position:absolute;inset:0;
  background:url(../../assets/img/cover_bg.jpg) center/cover no-repeat;
  transform:scale(1.06);
}
.hero-scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,26,22,.6),rgba(20,26,22,.5) 48%,rgba(20,26,22,.68));}
.hero-in{position:relative;z-index:2;padding:0 24px;max-width:780px;}
.hero-symbol{width:118px;height:118px;margin:0 auto 26px;animation:float 6s ease-in-out infinite;}
.hero-title{font-family:var(--font-display);font-size:70px;letter-spacing:.22em;margin:0;text-shadow:0 2px 20px rgba(0,0,0,.4);}
.hero-sub{font-family:var(--font-display);font-size:24px;letter-spacing:.32em;margin:16px 0 0;color:#EFE7D6;}
.hero-rule{width:110px;height:1px;background:var(--gold);margin:26px auto;opacity:.9;}
.hero-dao{font-family:var(--font-display);font-size:17px;letter-spacing:.14em;color:#F0E8D8;line-height:2;margin:0;text-shadow:0 1px 8px rgba(0,0,0,.5);}
.hero-tag{font-size:14px;letter-spacing:.18em;color:#E2D9C7;margin:16px 0 0;text-shadow:0 1px 8px rgba(0,0,0,.5);}
.hero-cta{
  display:inline-block;margin-top:36px;padding:13px 40px;border:1.5px solid rgba(243,236,221,.92);
  background:rgba(20,26,22,.32);color:#F3ECDD;text-decoration:none;letter-spacing:.22em;font-size:14px;
  border-radius:2px;transition:.3s;text-shadow:0 1px 6px rgba(0,0,0,.4);
}
.hero-cta:hover{background:var(--gold);border-color:var(--gold);color:#23292B;}
.scroll-cue{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);width:26px;height:42px;border:1px solid rgba(243,236,221,.5);border-radius:14px;z-index:2;}
.scroll-cue span{display:block;width:4px;height:8px;background:#F3ECDD;border-radius:2px;margin:7px auto;animation:cue 1.8s infinite;}
@keyframes cue{0%{opacity:0;transform:translateY(0);}30%{opacity:1;}100%{opacity:0;transform:translateY(12px);}}
@keyframes float{0%,100%{transform:translateY(0);}50%{transform:translateY(-10px);}}

/* ============ 通用 section ============ */
.section{padding:112px 0;scroll-margin-top:68px;}
.section-light{background:var(--paper);}
.section-soft{background:#EFE8DA;}
.section-dark{background:var(--jade-deep);color:#EDE4D2;}
.section-dark .section-intro{color:#D7CDBA;}
.sec-head{display:flex;align-items:flex-end;gap:18px;border-bottom:2px solid var(--jade);padding-bottom:14px;margin-bottom:42px;}
.sec-head.light{border-color:var(--gold);}
.sec-num{font-family:var(--font-display);font-size:46px;line-height:.78;color:var(--gold);}
.sec-head .cn{font-family:var(--font-display);font-size:30px;color:var(--ink);letter-spacing:.08em;margin:0;}
.sec-head.light .cn{color:#F3ECDD;}
.sec-head .en{font-family:var(--font-sans);font-size:11px;letter-spacing:.34em;color:var(--ink-faint);text-transform:uppercase;margin:8px 0 0;}
.sec-head.light .en{color:rgba(243,236,221,.6);}
.section-intro{max-width:840px;font-size:16px;color:var(--ink-soft);margin:0 0 52px;line-height:2;}

/* ============ 关于我们 ============ */
.about-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:52px;align-items:start;}
.about-text p{margin:0 0 18px;font-size:15.5px;line-height:2;color:var(--ink-soft);text-align:justify;}
.about-text .lead{font-size:17px;color:var(--ink);}
.about-side{display:flex;flex-direction:column;gap:22px;}
.side-card{border:1px solid var(--paper-line);border-left:4px solid var(--jade);background:#fff;padding:26px;border-radius:4px;}
.side-card.accent{border-left-color:var(--gold);background:rgba(94,124,107,.06);}
.side-ttl{font-family:var(--font-display);font-size:18px;color:var(--jade-deep);margin-bottom:10px;letter-spacing:.06em;}
.side-card p{margin:0 0 14px;font-size:14px;color:var(--ink-soft);line-height:1.85;}
.pillrow{display:flex;flex-wrap:wrap;gap:9px;}
.pill{font-family:var(--font-sans);font-size:12.5px;color:var(--jade-deep);border:1px solid var(--jade);border-radius:30px;padding:5px 13px;background:rgba(94,124,107,.05);}
.principle{font-family:var(--font-display);font-size:17px;color:var(--ink);letter-spacing:.16em;line-height:2;text-align:left;margin:0;}

/* ============ 文化产业 ============ */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;}
.feat{background:#fff;border:1px solid var(--paper-line);border-radius:6px;padding:34px 28px;transition:.3s;}
.feat:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(42,46,43,.08);border-color:var(--jade);}
.feat-ico{width:56px;height:56px;color:var(--jade);margin-bottom:18px;}
.feat h3{font-family:var(--font-display);font-size:19px;color:var(--jade-deep);margin:0 0 12px;letter-spacing:.04em;}
.feat p{font-size:14.5px;color:var(--ink-soft);line-height:1.9;margin:0;}

.fig-row{display:flex;gap:20px;margin-top:38px;}
.figure{flex:1;border:1px solid var(--paper-line);border-radius:6px;overflow:hidden;position:relative;aspect-ratio:16/8;background:#E7DCC6;}
.figure img{width:100%;height:100%;object-fit:cover;display:block;}
.figure .fig-cap{position:absolute;left:0;right:0;bottom:0;padding:11px 14px;background:linear-gradient(180deg,transparent,rgba(28,34,30,.74));color:#F3ECDD;font-size:13px;letter-spacing:.04em;}
.fig-row.three .figure{aspect-ratio:4/3;}

/* ============ 核心业务 ============ */
.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.biz{background:#fff;border:1px solid var(--paper-line);border-top:3px solid var(--jade);border-radius:6px;padding:32px 26px;transition:.3s;}
.biz:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(42,46,43,.08);}
.biz-no{font-family:var(--font-display);font-size:16px;color:var(--gold);letter-spacing:.1em;margin-bottom:8px;}
.biz h3{font-family:var(--font-display);font-size:18px;color:var(--ink);margin:0 0 14px;line-height:1.5;letter-spacing:.02em;}
.biz p{font-size:14px;color:var(--ink-soft);line-height:1.85;margin:0 0 14px;}
.biz ul{margin:0 0 14px;padding-left:18px;}
.biz ul li{font-size:13.5px;color:var(--ink-soft);line-height:1.9;}
.biz-foot{font-size:13px;color:var(--jade-deep)!important;font-weight:600;margin:0!important;}

/* ============ 核心优势 ============ */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.adv-card{background:rgba(255,255,255,.05);border:1px solid rgba(243,236,221,.18);border-top:3px solid var(--gold);border-radius:6px;padding:34px 28px;transition:.3s;}
.adv-card:hover{background:rgba(255,255,255,.1);transform:translateY(-6px);}
.adv-card h3{font-family:var(--font-display);font-size:20px;color:#F3ECDD;margin:0 0 14px;letter-spacing:.05em;}
.adv-card p{font-size:14.5px;color:#D7CDBA;line-height:1.9;margin:0;}
.adv-symbol{display:flex;flex-direction:column;align-items:center;margin-top:52px;gap:14px;}
.adv-symbol svg{width:150px;height:150px;}
.adv-symbol p{font-size:13px;letter-spacing:.08em;color:rgba(243,236,221,.55);margin:0;}

/* ============ 企业愿景 ============ */
.section-vision{position:relative;background:url(../../assets/img/vision_bg.jpg) center/cover fixed no-repeat;color:#fff;padding:168px 0;}
.vision-scrim{position:absolute;inset:0;background:rgba(28,34,30,.55);}
.vision-in{position:relative;z-index:2;text-align:center;max-width:880px;}
.vision-tag{font-family:var(--font-sans);font-size:12px;letter-spacing:.4em;color:var(--gold);margin:0 0 22px;}
.vision-title{font-family:var(--font-display);font-size:44px;letter-spacing:.16em;margin:0 0 30px;color:#fff;text-shadow:0 2px 14px rgba(0,0,0,.4);}
.vision-text{font-family:var(--font-display);font-size:19px;line-height:2.2;color:#F1E9D8;margin:0;}
.vision-text .hl{color:var(--gold);}

/* ============ 联系我们 ============ */
.contact-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:52px;align-items:center;}
.contact-info{display:flex;flex-direction:column;gap:20px;}
.ci-item{display:flex;flex-direction:column;gap:6px;border-bottom:1px solid rgba(243,236,221,.15);padding-bottom:16px;}
.ci-label{font-family:var(--font-sans);font-size:12px;letter-spacing:.2em;color:var(--gold);}
.ci-val{font-family:var(--font-display);font-size:18px;color:#F3ECDD;letter-spacing:.03em;line-height:1.6;}
.contact-symbol svg{width:200px;height:200px;margin:0 auto;display:block;opacity:.92;}

/* ============ 页脚 ============ */
.footer{background:#23292B;color:#C9C0B0;padding:56px 0;text-align:center;}
.footer-brand .brand-name{font-family:var(--font-display);font-size:22px;color:#F3ECDD;letter-spacing:.12em;}
.footer-brand p{margin:8px 0 0;font-size:13px;letter-spacing:.1em;color:#A89E8C;}
.footer-tag{margin:22px 0 10px;font-size:13px;letter-spacing:.24em;color:var(--gold);}
.footer-copy{margin:0;font-size:12px;letter-spacing:.06em;color:#8C8475;}

/* ============ 滚动揭示（渐进增强：无 JS 时默认全部可见，避免空白） ============ */
.reveal{opacity:1;transform:none;}
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease, transform .8s ease;}
.js .reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:900px){
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:38px;}
  .feat-grid,.biz-grid,.adv-grid{grid-template-columns:1fr;}
  .section{padding:84px 0;}
  .sec-head .cn{font-size:26px;}
  .hero-title{font-size:50px;}
  .hero-sub{font-size:20px;}
  .nav-menu{
    position:fixed;top:68px;left:0;right:0;background:rgba(246,241,231,.98);flex-direction:column;gap:0;
    padding:8px 0;transform:translateY(-130%);transition:transform .3s ease;box-shadow:0 12px 30px rgba(0,0,0,.12);
  }
  .nav-menu.open{transform:none;}
  .nav-menu a{color:var(--ink-soft);padding:15px 28px;display:block;font-size:16px;}
  .nav-menu a::after{display:none;}
  .nav-toggle{display:flex;}
  .section-vision{background-attachment:scroll;padding:112px 0;}
}
@media (max-width:560px){
  .fig-row,.fig-row.three{flex-direction:column;}
  .container{padding:0 20px;}
  .hero-title{font-size:40px;}
  .hero-sub{font-size:18px;}
  .hero-symbol{width:96px;height:96px;}
  .vision-title{font-size:32px;}
  .vision-text{font-size:16px;}
  .sec-num{font-size:38px;}
  .ci-val{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  .hero-symbol{animation:none;}
  .scroll-cue span{animation:none;}
  html{scroll-behavior:auto;}
}