/* ============================================================
   大国智造 · 影视舞台国风设计系统（dgz- 前缀，深色基底）
   幕布墨黑 #17120f × 朱砂红 #c3272b × 鎏金铜 #c9a063 × 宣纸浅 #f3ece1
   ============================================================ */

:root {
  --dgz-ink: #17120f;        /* 幕布墨黑：全站基底 */
  --dgz-ink-2: #201914;      /* 墨黑升调：卡片底 */
  --dgz-ink-3: #2a211a;      /* 墨黑高光：描边分区 */
  --dgz-red: #c3272b;        /* 朱砂红：主行动色 */
  --dgz-red-deep: #96181c;   /* 朱砂深：hover */
  --dgz-gold: #c9a063;       /* 鎏金铜：点缀/描边 */
  --dgz-gold-soft: #a5824e;  /* 鎏金弱化 */
  --dgz-paper: #f3ece1;      /* 宣纸浅：主文字 */
  --dgz-paper-dim: #bfb4a3;  /* 宣纸次级文字（对比度 ≥ 7:1）*/
  --dgz-serif: "STSong", "SimSun", "Songti SC", "NSimSun", serif;
  --dgz-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --dgz-max: 1140px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--dgz-ink);
  color: var(--dgz-paper);
  font-family: var(--dgz-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.dgz-shell { max-width: var(--dgz-max); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶栏 ---------- */

.dgz-topbar {
  position: sticky; top: 0; z-index: 60;
  background: rgba(23, 18, 15, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--dgz-ink-3);
}

.dgz-topbar-in {
  max-width: var(--dgz-max); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}

.dgz-brand { display: flex; align-items: baseline; gap: 10px; }

.dgz-brand-seal {
  font-family: var(--dgz-serif);
  font-size: 24px; font-weight: 700; letter-spacing: 2px;
  color: var(--dgz-paper);
}

.dgz-brand-seal b { color: var(--dgz-red); font-weight: 700; }

.dgz-brand-sub {
  font-size: 12px; letter-spacing: 3px;
  color: var(--dgz-gold);
}

.dgz-menu { display: flex; gap: 4px; }

.dgz-menu a {
  display: block; padding: 8px 18px;
  font-size: 15px; color: var(--dgz-paper-dim);
  border-bottom: 2px solid transparent;
  transition: color .2s;
}

.dgz-menu a:hover { color: var(--dgz-gold); }

.dgz-menu a.dgz-here {
  color: var(--dgz-paper);
  border-bottom-color: var(--dgz-red);
}

.dgz-burger {
  display: none;
  width: 40px; height: 40px;
  background: none; border: 1px solid var(--dgz-gold-soft); border-radius: 4px;
  cursor: pointer; position: relative;
}

.dgz-burger span, .dgz-burger span::before, .dgz-burger span::after {
  content: ""; display: block; position: absolute;
  left: 9px; width: 20px; height: 2px; background: var(--dgz-gold);
  transition: transform .25s, opacity .25s;
}

.dgz-burger span { top: 19px; }
.dgz-burger span::before { left: 0; top: -6px; }
.dgz-burger span::after { left: 0; top: 6px; }

.dgz-open .dgz-burger span { background: transparent; }
.dgz-open .dgz-burger span::before { transform: translateY(6px) rotate(45deg); }
.dgz-open .dgz-burger span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 聚光舞台首屏 ---------- */

.dgz-stage {
  position: relative; overflow: hidden;
  padding: clamp(72px, 11vw, 150px) 0 clamp(60px, 9vw, 120px);
  background:
    radial-gradient(ellipse 62% 55% at 50% -6%, rgba(201, 160, 99, .28), transparent 68%),
    radial-gradient(ellipse 34% 42% at 82% 22%, rgba(195, 39, 43, .16), transparent 70%),
    var(--dgz-ink);
  text-align: center;
}

.dgz-stage::after {
  content: ""; position: absolute; left: 50%; bottom: 0;
  width: 120px; height: 3px; transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, var(--dgz-gold), transparent);
}

.dgz-stage-tag {
  display: inline-block; padding: 5px 20px; margin-bottom: 26px;
  border: 1px solid var(--dgz-gold-soft); border-radius: 2px;
  color: var(--dgz-gold); font-size: 14px; letter-spacing: 4px;
}

.dgz-stage-title {
  font-family: var(--dgz-serif);
  font-size: clamp(34px, 6vw, 62px); font-weight: 700;
  letter-spacing: clamp(3px, 1vw, 10px); line-height: 1.35;
}

.dgz-stage-title i { font-style: normal; color: var(--dgz-red); }

.dgz-stage-lead {
  max-width: 640px; margin: 22px auto 0;
  color: var(--dgz-paper-dim); font-size: clamp(15px, 1.6vw, 17px);
}

.dgz-stage-act { margin-top: 44px; display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; }

.dgz-btn {
  display: inline-block; padding: 13px 38px;
  font-size: 15px; letter-spacing: 2px;
  border-radius: 2px; transition: background .2s, color .2s, border-color .2s;
}

.dgz-btn-red { background: var(--dgz-red); color: var(--dgz-paper); }
.dgz-btn-red:hover { background: var(--dgz-red-deep); }

.dgz-btn-line { border: 1px solid var(--dgz-gold-soft); color: var(--dgz-gold); }
.dgz-btn-line:hover { border-color: var(--dgz-gold); color: var(--dgz-paper); }

/* ---------- 章节公共 ---------- */

.dgz-act { padding: clamp(56px, 8vw, 96px) 0; }

.dgz-act-alt { background: var(--dgz-ink-2); }

.dgz-act-head { text-align: center; margin-bottom: clamp(36px, 5vw, 56px); }

.dgz-act-no {
  font-family: var(--dgz-serif);
  color: var(--dgz-gold); font-size: 14px; letter-spacing: 5px;
}

.dgz-act-title {
  font-family: var(--dgz-serif);
  font-size: clamp(24px, 3.4vw, 34px); font-weight: 700; letter-spacing: 4px;
  margin-top: 8px;
}

.dgz-act-title::after {
  content: ""; display: block; width: 46px; height: 2px;
  margin: 16px auto 0;
  background: linear-gradient(90deg, var(--dgz-red), var(--dgz-gold));
}

.dgz-act-note { color: var(--dgz-paper-dim); margin-top: 14px; font-size: 15px; }

/* ---------- 五位一体编号卡 ---------- */

.dgz-pentad {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
}

.dgz-pentad-card {
  display: block; padding: 30px 20px 26px;
  background: var(--dgz-ink-2);
  border: 1px solid var(--dgz-ink-3); border-top: 2px solid var(--dgz-gold-soft);
  transition: transform .25s, border-color .25s;
}

.dgz-act-alt .dgz-pentad-card { background: var(--dgz-ink); }

.dgz-pentad-card:hover { transform: translateY(-6px); border-top-color: var(--dgz-red); }

.dgz-pentad-no {
  font-family: var(--dgz-serif);
  font-size: 30px; color: var(--dgz-gold); line-height: 1;
}

.dgz-pentad-name {
  font-family: var(--dgz-serif);
  font-size: 18px; font-weight: 700; letter-spacing: 2px;
  margin: 16px 0 10px;
}

.dgz-pentad-desc { font-size: 13.5px; color: var(--dgz-paper-dim); line-height: 1.7; }

/* ---------- 十大业务宽幅阵列 ---------- */

.dgz-domains { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.dgz-domain {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 24px 26px;
  background: var(--dgz-ink);
  border: 1px solid var(--dgz-ink-3);
  border-left: 3px solid var(--dgz-gold-soft);
  transition: border-color .25s, background .25s;
}

.dgz-act .dgz-domains-onink .dgz-domain { background: var(--dgz-ink-2); }

.dgz-domain:hover { border-left-color: var(--dgz-red); background: var(--dgz-ink-3); }

.dgz-domain-no {
  font-family: var(--dgz-serif);
  font-size: 26px; color: var(--dgz-gold); line-height: 1.2; min-width: 40px;
}

.dgz-domain-name {
  font-family: var(--dgz-serif);
  font-size: 17px; font-weight: 700; letter-spacing: 1px;
}

.dgz-domain-desc { font-size: 14px; color: var(--dgz-paper-dim); margin-top: 6px; }

/* 首页业务速览词条 */

.dgz-domain-chips { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

.dgz-domain-chips a {
  padding: 10px 22px;
  border: 1px solid var(--dgz-ink-3); border-radius: 2px;
  background: var(--dgz-ink);
  color: var(--dgz-paper-dim); font-size: 14.5px; letter-spacing: 1px;
  transition: color .2s, border-color .2s;
}

.dgz-domain-chips a:hover { color: var(--dgz-gold); border-color: var(--dgz-gold-soft); }

/* ---------- 理念四词大字幕 ---------- */

.dgz-motto {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  text-align: center;
}

.dgz-motto-word {
  padding: 40px 12px 34px;
  background:
    radial-gradient(ellipse 90% 60% at 50% 0%, rgba(201, 160, 99, .10), transparent 75%),
    var(--dgz-ink-2);
  border: 1px solid var(--dgz-ink-3);
}

.dgz-motto-hz {
  font-family: var(--dgz-serif);
  font-size: clamp(34px, 4.6vw, 52px); font-weight: 700;
  color: var(--dgz-paper);
}

.dgz-motto-hz::first-letter { color: var(--dgz-red); }

.dgz-motto-gloss { margin-top: 12px; font-size: 13.5px; color: var(--dgz-paper-dim); }

/* ---------- 团队实力条目 ---------- */

.dgz-crew { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.dgz-crew-item {
  padding: 34px 28px;
  background: var(--dgz-ink-2);
  border: 1px solid var(--dgz-ink-3);
  position: relative;
}

.dgz-crew-item::before {
  content: ""; position: absolute; top: 0; left: 28px;
  width: 34px; height: 2px; background: var(--dgz-red);
}

.dgz-crew-name {
  font-family: var(--dgz-serif);
  font-size: 19px; font-weight: 700; letter-spacing: 2px;
}

.dgz-crew-desc { margin-top: 12px; font-size: 14.5px; color: var(--dgz-paper-dim); }

/* ---------- 简介/联系 双栏 ---------- */

.dgz-duocol { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(28px, 5vw, 64px); align-items: start; }

.dgz-prose p { margin-bottom: 16px; color: var(--dgz-paper-dim); font-size: 15.5px; }

.dgz-prose p strong { color: var(--dgz-paper); font-weight: 600; }

.dgz-sealpanel {
  position: relative; overflow: hidden;
  min-height: 300px; padding: 40px 34px;
  background:
    radial-gradient(ellipse 80% 62% at 50% 8%, rgba(195, 39, 43, .18), transparent 72%),
    radial-gradient(ellipse 55% 45% at 85% 90%, rgba(201, 160, 99, .14), transparent 70%),
    var(--dgz-ink-2);
  border: 1px solid var(--dgz-gold-soft);
  display: flex; flex-direction: column; justify-content: center; text-align: center;
}

.dgz-sealpanel-hz {
  font-family: var(--dgz-serif);
  font-size: clamp(40px, 5vw, 58px); font-weight: 700; letter-spacing: 12px;
  color: var(--dgz-gold);
}

.dgz-sealpanel-en { margin-top: 14px; font-size: 13px; letter-spacing: 5px; color: var(--dgz-paper-dim); }

/* ---------- 合作咨询色带 ---------- */

.dgz-band {
  background:
    radial-gradient(ellipse 55% 90% at 50% 115%, rgba(201, 160, 99, .22), transparent 70%),
    linear-gradient(135deg, var(--dgz-red-deep), var(--dgz-red));
  padding: clamp(46px, 6vw, 72px) 0;
  text-align: center;
}

.dgz-band-title {
  font-family: var(--dgz-serif);
  font-size: clamp(22px, 3vw, 30px); font-weight: 700; letter-spacing: 4px;
}

.dgz-band-note { margin-top: 12px; color: rgba(243, 236, 225, .82); font-size: 15px; }

.dgz-band-act { margin-top: 30px; display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

.dgz-btn-ink { background: var(--dgz-ink); color: var(--dgz-gold); }
.dgz-btn-ink:hover { background: var(--dgz-ink-2); color: var(--dgz-paper); }

.dgz-btn-paper { border: 1px solid rgba(243, 236, 225, .55); color: var(--dgz-paper); }
.dgz-btn-paper:hover { border-color: var(--dgz-paper); background: rgba(243, 236, 225, .08); }

/* ---------- 联系版块 ---------- */

.dgz-reach {
  display: flex; flex-direction: column; gap: 18px;
}

.dgz-reach-row {
  display: flex; align-items: baseline; gap: 16px;
  padding: 20px 24px;
  background: var(--dgz-ink-2); border: 1px solid var(--dgz-ink-3);
}

.dgz-reach-k { min-width: 88px; color: var(--dgz-gold); font-size: 14px; letter-spacing: 3px; }

.dgz-reach-v { font-size: 16px; }

.dgz-reach-v a { color: var(--dgz-paper); border-bottom: 1px dashed var(--dgz-gold-soft); }
.dgz-reach-v a:hover { color: var(--dgz-gold); }

.dgz-reach-tel {
  font-family: var(--dgz-serif);
  font-size: clamp(24px, 3vw, 32px) !important; letter-spacing: 2px;
}

/* ---------- 页脚 ---------- */

.dgz-foot {
  border-top: 1px solid var(--dgz-ink-3);
  background: #120e0b;
  padding: 48px 0 34px;
}

.dgz-foot-grid {
  display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 32px;
  padding-bottom: 32px; border-bottom: 1px solid var(--dgz-ink-3);
}

.dgz-foot-h {
  font-family: var(--dgz-serif);
  font-size: 16px; letter-spacing: 3px; color: var(--dgz-gold);
  margin-bottom: 14px;
}

.dgz-foot-brand {
  font-family: var(--dgz-serif);
  font-size: 20px; font-weight: 700; letter-spacing: 2px;
}

.dgz-foot-brand b { color: var(--dgz-red); }

.dgz-foot p, .dgz-foot li { color: var(--dgz-paper-dim); font-size: 14px; }

.dgz-foot li { margin-bottom: 8px; }

.dgz-foot a:hover { color: var(--dgz-gold); }

.dgz-foot-tel {
  font-family: var(--dgz-serif);
  font-size: 24px; color: var(--dgz-paper) !important; letter-spacing: 1px;
}

.dgz-foot-icp {
  margin-top: 26px; text-align: center;
  color: var(--dgz-paper-dim); font-size: 13px; line-height: 2;
}

.dgz-foot-icp a { border-bottom: 1px dotted var(--dgz-gold-soft); }
.dgz-foot-icp a:hover { color: var(--dgz-gold); }

/* ---------- 渐显（仅 .dgz-js 启用） ---------- */

.dgz-js .dgz-rise {
  opacity: 0; transform: translateY(26px);
  transition: opacity .7s ease, transform .7s ease;
}

.dgz-js .dgz-rise.dgz-lit { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */

@media (max-width: 960px) {
  .dgz-pentad { grid-template-columns: repeat(3, 1fr); }
  .dgz-crew { grid-template-columns: 1fr; }
  .dgz-duocol { grid-template-columns: 1fr; }
  .dgz-motto { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .dgz-burger { display: block; }

  .dgz-menu {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(23, 18, 15, .98);
    border-bottom: 1px solid var(--dgz-ink-3);
  }

  .dgz-js .dgz-menu { display: none; }
  .dgz-js .dgz-open .dgz-menu { display: flex; }

  .dgz-menu a { padding: 14px 28px; border-bottom: none; }
  .dgz-menu a.dgz-here { color: var(--dgz-red); }

  .dgz-pentad { grid-template-columns: 1fr 1fr; }
  .dgz-domains { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .dgz-pentad { grid-template-columns: 1fr; }
  .dgz-motto { grid-template-columns: 1fr; }
  .dgz-brand-sub { display: none; }
}