/* ============================================================
   LIUYI ARTS — 全局样式（暗色电影感 + 香槟金）
   设计基调：深黑背景、暖金点缀、大留白、衬线标题
   ============================================================ */

:root {
  --bg: #0a0b0d;
  --bg-2: #101216;
  --surface: #15171c;
  --surface-2: #1c1f26;
  /* 技术制作局：信号琥珀 + 暗冷底 */
  --gold: #e3a52e;
  --gold-soft: #f4c869;
  --gold-dim: rgba(227, 165, 46, 0.14);
  --gold-line: rgba(227, 165, 46, 0.38);
  --signal: #ffb627;
  --text: #f2efe6;
  --muted: #9aa0a6;
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.16);
  --grid: rgba(227, 165, 46, 0.05);
  --radius: 4px;
  --radius-sm: 3px;
  --maxw: 1200px;
  --nav-h: 68px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  --serif: "Songti SC", "Noto Serif SC", Georgia, "Times New Roman", serif;
  --sans: "Oswald", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- 技术制作局：全局网格底纹 + 暗角 ---------- */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.6;
}
/* 角标十字标记（用于卡片/区块四角的技术感定位符号） */
.cross {
  position: absolute; width: 10px; height: 10px; pointer-events: none; opacity: 0.5;
}
.cross::before, .cross::after { content: ""; position: absolute; background: var(--gold); }
.cross::before { left: 50%; top: 0; bottom: 0; width: 1px; transform: translateX(-50%); }
.cross::after { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-50%); }
.cross.tl { top: 10px; left: 10px; }
.cross.tr { top: 10px; right: 10px; }
.cross.bl { bottom: 10px; left: 10px; }
.cross.br { bottom: 10px; right: 10px; }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.25; letter-spacing: 0.01em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; }
.section--tight { padding: 64px 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 16px;
}
.eyebrow::before { content: "▪"; color: var(--signal); margin-right: 4px; font-size: 10px; }
.eyebrow::after { content: ""; width: 32px; height: 1px; background: var(--gold-line); }
.section-title { font-size: clamp(27px, 3.6vw, 44px); margin: 0 0 16px; letter-spacing: 0.01em; }
.section .section-title { position: relative; padding-bottom: 18px; }
.section .section-title::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 54px; height: 3px;
  background: var(--gold); box-shadow: 0 0 14px rgba(227, 165, 46, 0.55);
}
.section-lead { color: var(--muted); max-width: 640px; margin: 0 0 40px; font-size: 16px; }

/* ---------- 按钮（命令式硬角） ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 28px; border-radius: 2px; font-size: 13px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; cursor: pointer;
  border: 1px solid transparent; transition: 0.22s ease; font-family: var(--mono);
}
.btn--gold { background: var(--gold); color: #140e02; }
.btn--gold:hover { background: var(--gold-soft); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(227, 165, 46, 0.3); }
.btn--ghost { border-color: var(--line-strong); color: var(--text); background: transparent; }
.btn--ghost:hover { border-color: var(--gold); color: var(--gold-soft); background: rgba(227, 165, 46, 0.06); }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); z-index: 50;
  display: flex; align-items: center;
  background: rgba(12, 12, 15, 0.55); backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent; transition: 0.3s ease;
}
.nav.scrolled { background: rgba(12, 12, 15, 0.92); border-bottom-color: var(--line); }
.nav .container { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand b { font-family: var(--serif); font-size: 18px; letter-spacing: 0.04em; }
.brand span { font-size: 10px; letter-spacing: 0.34em; color: var(--gold); text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { font-size: 14px; color: var(--muted); transition: 0.2s; position: relative; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -8px; height: 2px; background: var(--gold);
}
.nav-right { display: flex; align-items: center; gap: 16px; }
.lang-toggle {
  display: flex; border: 1px solid var(--line-strong); border-radius: 999px; overflow: hidden;
}
.lang-toggle button {
  background: transparent; border: 0; color: var(--muted); padding: 6px 12px;
  font-size: 12px; cursor: pointer; font-family: var(--sans); transition: 0.2s;
}
.lang-toggle button.active { background: var(--gold); color: #1a1408; font-weight: 600; }
.nav-burger { display: none; background: none; border: 0; color: var(--text); font-size: 24px; cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh; display: flex; align-items: center; position: relative;
  padding-top: var(--nav-h);
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(201, 162, 75, 0.10), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(201, 162, 75, 0.06), transparent 55%),
    linear-gradient(180deg, #0c0c0f, #0e0e13);
  overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 26px 26px; opacity: 0.5; pointer-events: none;
}
/* Hero 背景媒体层（图片/视频），带暗色遮罩保证文字可读 */
.hero-bg { position: absolute; inset: 0; z-index: 0; opacity: 0; transition: opacity 0.8s ease; }
.hero-bg.show { opacity: 1; }
.hero-bg img, .hero-bg video { width: 100%; height: 100%; object-fit: cover; }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(12,12,15,0.72) 0%, rgba(12,12,15,0.55) 45%, rgba(12,12,15,0.92) 100%),
    radial-gradient(800px 500px at 70% 30%, rgba(201,162,75,0.10), transparent 60%);
}
.hero .container { position: relative; z-index: 1; }
.hero h1 {
  font-size: clamp(34px, 5.6vw, 68px); margin: 18px 0 22px; max-width: 900px;
  font-family: var(--sans); font-weight: 600; letter-spacing: 0.01em; line-height: 1.08;
  text-transform: none;
}
.hero h1 em { font-style: normal; color: var(--gold); }
.hero h1::after {
  content: ""; display: block; width: 64px; height: 3px; margin-top: 22px;
  background: var(--gold); box-shadow: 0 0 14px rgba(227, 165, 46, 0.55);
}
.hero p.lead { font-size: clamp(16px, 2vw, 20px); color: var(--muted); max-width: 600px; }
.hero-cta { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }
.hero-meta { margin-top: 56px; display: flex; gap: 40px; flex-wrap: wrap; }
.hero-meta .stat { position: relative; padding-left: 18px; }
.hero-meta .stat::before {
  content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 2px;
  background: var(--gold); box-shadow: 0 0 10px rgba(227, 165, 46, 0.5);
}
.stat__num { display: flex; align-items: flex-start; gap: 3px; line-height: 1; }
.hero-meta .stat__num b { font-family: var(--mono); font-size: 30px; font-weight: 500; color: var(--gold-soft); letter-spacing: 0.02em; }
.hero-meta .stat__unit { font-family: var(--mono); font-size: 13px; font-weight: 500; color: var(--gold); line-height: 1.35; }
.hero-meta .stat > span:last-child { display: block; margin-top: 6px; font-size: 12px; color: var(--muted); font-family: var(--mono); letter-spacing: 0.12em; text-transform: uppercase; }

/* 滚动提示 */
.scroll-cue { position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  width: 26px; height: 42px; border: 1px solid var(--line-strong); border-radius: 14px; z-index: 1; }
.scroll-cue span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; border-radius: 2px;
  background: var(--gold); transform: translateX(-50%); animation: cue 1.6s infinite; }
@keyframes cue { 0% { opacity: 0; top: 8px; } 40% { opacity: 1; } 100% { opacity: 0; top: 22px; } }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: 0.3s ease; position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform: scaleX(0); transform-origin: left; transition: 0.35s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: var(--shadow); }
.card:hover::before { transform: scaleX(1); }
.card .ico { width: 44px; height: 44px; border-radius: 12px; background: var(--gold-dim);
  display: flex; align-items: center; justify-content: center; color: var(--gold-soft); font-size: 20px; margin-bottom: 18px; }
.card h3 { font-size: 19px; margin: 0 0 10px; }
.card p { color: var(--muted); font-size: 14px; margin: 0; }

/* ---------- 数据背书 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-box { text-align: center; padding: 32px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.stat-box b { font-family: var(--serif); font-size: clamp(30px, 4vw, 46px); color: var(--gold-soft); display: block; }
.stat-box span { color: var(--muted); font-size: 13px; }

/* ---------- 精选案例（错落 + 电影感） ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-grid > *:nth-child(3n + 2) { margin-top: 0; }

.case-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: var(--surface); border: 1px solid var(--line);
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}
.case-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; z-index: 2;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform: scaleX(0); transform-origin: left; transition: 0.4s ease;
}
/* 技术定位四角十字标记 */
.case-card::after {
  content: ""; position: absolute; inset: 9px; z-index: 2; pointer-events: none;
  background:
    linear-gradient(var(--gold-line), var(--gold-line)) left top / 10px 1px no-repeat,
    linear-gradient(var(--gold-line), var(--gold-line)) left top / 1px 10px no-repeat,
    linear-gradient(var(--gold-line), var(--gold-line)) right top / 10px 1px no-repeat,
    linear-gradient(var(--gold-line), var(--gold-line)) right top / 1px 10px no-repeat,
    linear-gradient(var(--gold-line), var(--gold-line)) left bottom / 10px 1px no-repeat,
    linear-gradient(var(--gold-line), var(--gold-line)) left bottom / 1px 10px no-repeat,
    linear-gradient(var(--gold-line), var(--gold-line)) right bottom / 10px 1px no-repeat,
    linear-gradient(var(--gold-line), var(--gold-line)) right bottom / 1px 10px no-repeat;
  opacity: 0; transition: opacity 0.4s ease;
}
.case-card:hover::after { opacity: 0.7; }
.case-card:hover { transform: translateY(-6px); border-color: rgba(201, 162, 75, 0.4); box-shadow: var(--shadow); }
.case-card:hover::before { transform: scaleX(1); box-shadow: 0 0 18px rgba(201, 162, 75, 0.45); }
.case-thumb { aspect-ratio: 3 / 2; background: linear-gradient(135deg, #23232c, #15151b);
  display: flex; align-items: center; justify-content: center; color: var(--gold);
  font-family: var(--serif); font-size: 30px; letter-spacing: 0.1em;
  position: relative; overflow: hidden; }
.case-thumb img, .case-thumb video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.case-thumb::after { content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 38%, rgba(0,0,0,0.55) 100%); pointer-events: none;
  transition: opacity 0.4s ease; opacity: 0.85; }
.case-card:hover .case-thumb img, .case-card:hover .case-thumb video { transform: scale(1.07); }
.case-card:hover .case-thumb::after { opacity: 0.55; }
.case-body { padding: 14px 16px 16px; position: relative; }
.case-body h3 { font-size: 17px; margin: 0 0 6px; line-height: 1.35; color: var(--text); }
.case-body .meta { color: var(--muted); font-size: 12px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.case-body .meta-types { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 6px; }
.case-body .meta-info { display: flex; gap: 10px; flex-wrap: wrap; color: var(--muted); font-size: 12px; align-items: center; }
.case-slider { position: absolute; inset: 0; }
.case-slider img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 0.7s ease; }
.case-slider img:first-child, .case-slider img.active { opacity: 1; }
.case-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 3;
  transition: all 0.25s ease;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  padding: 0;
}
.case-arrow:hover {
  background: rgba(0, 0, 0, 0.55);
  border-color: rgba(255, 255, 255, 0.7);
}
.case-arrow-prev { left: 16px; }
.case-arrow-next { right: 16px; }
.case-arrow svg { display: block; pointer-events: none; }
.case-fallback { font-family: var(--serif); font-size: 30px; letter-spacing: 0.1em; color: var(--gold); }
.case-cat {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 14px; font-weight: 600;
  letter-spacing: 0.12em; color: var(--gold); text-transform: uppercase;
  margin: 0 0 20px; padding-left: 0;
}
.case-cat::before {
  content: ""; width: 3px; height: 14px; background: var(--gold);
  border-radius: 1px; flex-shrink: 0;
  box-shadow: 0 0 10px rgba(227, 165, 46, 0.45);
}
.case-group { margin-bottom: 56px; }
.case-group:last-child { margin-bottom: 0; }
/* 统一技术角标：等宽编号 / 坐标式标签 */
.card-idx {
  position: absolute; top: 14px; right: 14px; z-index: 3;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; color: var(--gold);
  background: rgba(10, 11, 13, 0.72); border: 1px solid var(--gold-line);
  padding: 3px 9px; border-radius: 2px;
}
.tag { display: inline-block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 2px;
  background: var(--gold-dim); color: var(--gold-soft); border: 1px solid rgba(227,165,46,0.3); }

/* ---------- 业务子卡（技术制作局） ---------- */
.card .card-idx { top: 16px; left: 16px; right: auto; color: var(--muted); border-color: var(--line-strong); }
.card h3 { font-size: 18px; margin: 14px 0 10px; }
.card p { color: var(--muted); font-size: 14px; margin: 0; }

/* ---------- 网络卡（技术角标） ---------- */
.network-card { position: relative; }
.network-card .card-idx { top: 16px; right: 16px; }

/* ---------- 品牌墙（横向滚动） ---------- */
.brand-row { margin-bottom: 44px; }
.brand-row:last-child { margin-bottom: 0; }
.brand-cat {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-transform: uppercase;
  margin: 0 0 16px;
  padding-left: 0;
}
.brand-cat::before {
  content: "";
  width: 3px;
  height: 14px;
  background: var(--gold);
  border-radius: 1px;
  flex-shrink: 0;
  box-shadow: 0 0 10px rgba(227, 165, 46, 0.45);
}
.brand-cat__main { color: var(--text); }
.brand-cat__sub {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}
/* 视口：溢出隐藏，去掉两侧黑色渐隐 mask，避免“断掉的黑区” */
.brand-track {
  position: relative;
  overflow: hidden;
  width: 100%;
}
/* 滚动载体：两片相同内容并排，平移 -50% 实现无缝循环 */
.brand-move {
  display: flex;
  width: max-content;
  animation: brand-scroll calc(var(--brand-count, 6) * 3.4s) linear infinite;
  will-change: transform;
}
.brand-row:hover .brand-move { animation-play-state: paused; }
@keyframes brand-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.brand-strip { display: flex; align-items: center; flex: 0 0 auto; }
.brand-logo {
  flex: 0 0 auto;
  width: 192px; height: 108px;   /* 统一 16:9 卡片 */
  margin-right: 6px;             /* 卡片间 6px 间隙（含头尾衔接处，保证无缝循环） */
  display: flex; align-items: center; justify-content: center;
  padding: 12px;
  border-radius: 8px;
  background: #ffffff;
  overflow: hidden;
  transition: 0.25s;
  box-sizing: border-box;
}
.brand-logo img {
  height: calc(80px * var(--logo-scale, 1));
  width: auto;
  max-width: calc(168px * var(--logo-scale, 1));
  object-fit: contain;
  filter: grayscale(1);
  transition: 0.25s;
}
.brand-logo--text span {
  font-size: 14px; font-weight: 600; color: #555;
  text-align: center; white-space: nowrap;
}
.brand-logo:hover img { filter: none; }
@media (max-width: 720px) {
  .brand-logo { width: 128px; height: 72px; padding: 9px; }
  .brand-logo img { height: calc(54px * var(--logo-scale, 1)); max-width: calc(110px * var(--logo-scale, 1)); }
  .brand-move { animation-duration: calc(var(--brand-count, 6) * 2.6s); }
}
@media (prefers-reduced-motion: reduce) {
  .brand-move { animation: none; }
}

/* ---------- 服务网络 ---------- */
.network-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.network-card { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); display: flex; flex-direction: column; }
.network-card .city { font-family: var(--serif); font-size: 22px; color: var(--gold-soft); margin-bottom: 4px; }
.network-card .co { font-size: 14px; margin-bottom: 10px; }
.network-card .addr { font-size: 12px; color: var(--muted); line-height: 1.6; flex: 1 0 auto; }
.network-tag { color: var(--gold-soft); font-size: 12px; margin-top: auto; padding-top: 10px; }

.network-subtitle {
  font-family: var(--serif); font-size: clamp(22px, 3vw, 30px); font-weight: 500;
  margin: 48px 0 22px; color: var(--text);
}
.network-subtitle:first-of-type { margin-top: 36px; }
.network-empty { color: var(--muted); font-size: 14px; margin-top: 8px; display: none; }

/* ---------- 新闻列表 ---------- */
.news-list { display: grid; gap: 20px; }
.news-item { display: flex; gap: 22px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); transition: 0.25s; }
.news-item:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.news-thumb { width: 160px; flex: 0 0 160px; aspect-ratio: 16/10; border-radius: 10px;
  background: linear-gradient(135deg, #23232c, #15151b); display: flex; align-items: center; justify-content: center; color: var(--gold);
  position: relative; overflow: hidden; }
.news-thumb img, .news-thumb video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.news-body h3 { font-size: 18px; margin: 0 0 8px; }
.news-body .date { font-size: 12px; color: var(--gold); margin-bottom: 8px; }
.news-body p { color: var(--muted); font-size: 14px; margin: 0; }

/* 新闻详情：单窗口循环播放（与案例展示一致） */
.news-slider {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: var(--radius);
  overflow: hidden;
  margin: 8px 0 28px;
  background: var(--surface);
  border: 1px solid var(--line);
}
.news-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.7s ease;
}
.news-slide.active { opacity: 1; }
.news-slide img, .news-slide video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- 联系 / 表单 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.info-row { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.info-row .k { color: var(--gold); width: 76px; flex: 0 0 76px; font-size: 13px; letter-spacing: 0.1em; }
.info-row .v { color: var(--text); font-size: 15px; }
.form label { display: block; font-size: 13px; color: var(--muted); margin: 16px 0 7px; }
.form input, .form textarea, .form select {
  width: 100%; padding: 12px 14px; background: var(--surface); border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm); color: var(--text); font-family: var(--sans); font-size: 14px; outline: none; transition: 0.2s;
}
.form input:focus, .form textarea:focus, .form select:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(227, 165, 46, 0.12); }
.form textarea { min-height: 120px; resize: vertical; }

.contact-card {
  margin-top: 36px; padding: 24px; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--surface);
}
.contact-card h3 { font-size: 18px; margin: 0 0 8px; }
.contact-card p { color: var(--muted); font-size: 14px; margin: 0 0 16px; line-height: 1.7; }

/* ---------- 合作伙伴地图 ---------- */
.map-wrap { position: relative; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #0f1215; }
#partnerMap { height: 520px; width: 100%; }
.map-legend {
  position: absolute; bottom: 18px; left: 18px; z-index: 10;
  display: flex; flex-wrap: wrap; gap: 14px;
  padding: 12px 16px; background: rgba(18, 20, 24, 0.92);
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  backdrop-filter: blur(6px);
}
.legend-item { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text); }
.legend-dot { width: 16px; height: 16px; border-radius: 50%; position: relative; display: flex; align-items: center; justify-content: center; }
.legend-dot::before {
  content: ''; position: absolute; inset: 0; border-radius: 50%;
  border: 1.5px solid currentColor; background: transparent; opacity: 0.55;
}
.legend-dot::after {
  content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor;
}
.legend-dot.strategic { color: var(--gold); }
.legend-dot.partner { color: #7aa7ff; }
.legend-circle {
  width: 16px; height: 16px; border-radius: 50%;
  border: 1.5px solid rgba(122, 167, 255, 0.55); background: rgba(122, 167, 255, 0.10);
}
.map-note {
  margin: 14px 2px 0; font-size: 12.5px; color: var(--muted); line-height: 1.7;
  text-align: center; max-width: 760px; margin-left: auto; margin-right: auto;
}
/* 后台必填标记与字段提示 */
.req { color: #e0888a; margin-left: 4px; font-weight: 700; }
.field-hint { color: var(--muted); font-size: 12px; margin: 6px 0 0; line-height: 1.5; }
.field input:invalid, .field textarea:invalid { border-color: #e0888a; }

.partner-marker { position: relative; display: flex; align-items: center; justify-content: center; }
.partner-marker b, .partner-marker i { position: absolute; border-radius: 50%; }
/* 外环 */
.partner-marker b { inset: 0; border: 2px solid currentColor; box-shadow: 0 0 0 2px rgba(0,0,0,0.35), 0 4px 14px rgba(0,0,0,0.45); }
/* 内点 */
.partner-marker i { width: 36%; height: 36%; background: currentColor; box-shadow: 0 2px 6px rgba(0,0,0,0.45); }
.partner-marker.strategic { color: var(--gold); width: 28px; height: 28px; }
.partner-marker.partner { color: #7aa7ff; width: 20px; height: 20px; }

/* Leaflet 暗色弹窗适配 */
.leaflet-popup-content-wrapper {
  background: rgba(18, 20, 24, 0.96); border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm); color: var(--text); box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}
.leaflet-popup-tip { background: rgba(18, 20, 24, 0.96); border: 1px solid var(--line-strong); }
.leaflet-popup-content { margin: 12px 16px; line-height: 1.6; }
.leaflet-container a.leaflet-popup-close-button { color: var(--muted); }
.leaflet-container a.leaflet-popup-close-button:hover { color: var(--gold); }

@media (max-width: 900px) {
  #partnerMap { height: 420px; }
  .map-legend { right: 14px; left: 14px; justify-content: center; }
}

/* ---------- 加入我们：why 卡片 + 招募框 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 8px; }
.why-card {
  position: relative; padding: 32px 28px; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--surface); transition: 0.25s ease;
}
.why-card:hover { border-color: var(--gold-line); transform: translateY(-3px); box-shadow: var(--shadow); }
.why-card .why-idx {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.2em;
  color: var(--gold); display: block; margin-bottom: 14px;
}
.why-card h3 { font-size: 20px; margin: 0 0 12px; }
.why-card p { color: var(--muted); font-size: 14px; line-height: 1.75; margin: 0; }

.recruit-box {
  padding: 24px; border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--surface);
}
.recruit-box p { margin: 0; }
.recruit-box + .recruit-box { margin-top: 24px; }

@media (max-width: 900px) {
  .why-grid { grid-template-columns: 1fr; }
}

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); padding: 56px 0 32px; background: var(--bg-2); margin-top: 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer h4 { font-family: var(--sans); font-size: 13px; letter-spacing: 0.16em; color: var(--gold); text-transform: uppercase; margin: 0 0 16px; }
.footer a { color: var(--muted); font-size: 14px; display: block; padding: 5px 0; transition: 0.2s; }
.footer a:hover { color: var(--text); }
.footer .copy { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- 滚动揭示 ---------- */
/* 默认可见：无脚本或脚本被禁用时内容也不会黑屏（健壮性 / 无障碍） */
.reveal { opacity: 1; transform: none; }
/* 仅在脚本可用且用户允许动效时启用入场动画（渐进增强，不依赖 JS 也能正常阅读） */
@media (prefers-reduced-motion: no-preference) and (scripting: enabled) {
  .reveal { opacity: 0; transform: translateY(24px); transition: 0.7s ease; }
  .reveal.in { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- 筛选条 ---------- */
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 32px; }
.filter-btn { padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line-strong);
  background: transparent; color: var(--muted); font-size: 13px; cursor: pointer; transition: 0.2s; font-family: var(--sans); }
.filter-btn.active, .filter-btn:hover { background: var(--gold); color: #1a1408; border-color: var(--gold); }
.filter-btn:disabled { opacity: 0.35; cursor: not-allowed; }

/* ---------- 列表分页 ---------- */
.paginate { display: flex; gap: 8px; justify-content: center; margin-top: 40px; flex-wrap: wrap; }
.paginate button { min-width: 40px; height: 40px; padding: 0 14px; border-radius: 8px;
  border: 1px solid var(--line-strong); background: transparent; color: var(--muted);
  font-size: 14px; cursor: pointer; transition: 0.2s; font-family: var(--sans); }
.paginate button:hover:not(:disabled) { border-color: var(--gold); color: var(--gold); }
.paginate button.active { background: var(--gold); color: #1a1408; border-color: var(--gold); }
.paginate button:disabled { opacity: 0.35; cursor: not-allowed; }

/* ---------- 详情页 ---------- */
.detail-hero { padding: calc(var(--nav-h) + 60px) 0 40px; }
.detail-meta { display: flex; gap: 12px; flex-wrap: wrap; margin: 16px 0 24px; }
.detail-types { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0 8px; }
.detail-info { display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 14px; margin: 0 0 24px; align-items: center; }
.tag-soft { background: rgba(201, 162, 75, 0.12); color: var(--muted); text-transform: none; letter-spacing: 0; }
.prose { max-width: 760px; color: #d8d4cc; font-size: 16px; }
.prose p { margin: 0 0 18px; }
.back-link { color: var(--gold); font-size: 14px; display: inline-block; margin-bottom: 18px; }

/* ---------- 管理后台 ---------- */
.admin-wrap { padding: calc(var(--nav-h) + 30px) 0 60px; }
.admin-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; flex-wrap: wrap; gap: 12px; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); font-size: 14px; }
.admin-table th { color: var(--gold); font-weight: 600; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; }
.admin-table tr:hover td { background: var(--surface); }
.admin-table tr.group-divider td { padding: 12px 14px; background: var(--surface-2); border-top: 2px solid var(--gold); border-bottom: 1px solid var(--line-strong); }
.admin-table tr.group-divider td .group-divider-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.admin-table tr.group-divider td span { color: var(--gold); font-size: 16px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.admin-table tr.group-divider td .filter-btn { padding: 8px 16px; font-size: 13px; }
.admin-edit { display: grid; gap: 14px; max-width: 820px; }
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; padding: 24px; z-index: 100; }
.modal-box { background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 28px; width: 100%; max-width: 720px; max-height: 88vh; overflow: auto; }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.close-x { background: none; border: 0; color: var(--muted); font-size: 24px; cursor: pointer; }
.empty { color: var(--muted); text-align: center; padding: 40px; }

/* ============================================================
   设计升级包 · 电影感 / 编辑式排版 / 材质层 / 辉光 / stagger
   仅在原系统之上追加与小幅覆盖，业务/数据/品牌墙 ticker 不变
   ============================================================ */

/* ---------- 材质：全站颗粒噪点（胶片质感） ---------- */
body::after {
  content: "";
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  opacity: 0.045; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 字号层级升级（拉开对比） ---------- */
h1, h2, h3, h4 { letter-spacing: -0.012em; }
.section-title { font-size: clamp(28px, 3.9vw, 46px); }
.section .section-title::after {
  width: 56px; height: 1px; background: var(--gold);
  box-shadow: 0 0 14px rgba(201, 162, 75, 0.55);
}

/* ---------- 内容层级：置于全局网格底纹之上 ---------- */
main, .footer { position: relative; z-index: 2; }

/* ---------- 电影感页头（覆盖原 detail-hero） ---------- */
.detail-hero {
  position: relative; overflow: hidden;
  padding: calc(var(--nav-h) + 104px) 0 78px;
}
.detail-hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(900px 460px at 80% -6%, rgba(201, 162, 75, 0.13), transparent 60%),
    radial-gradient(720px 440px at 6% 118%, rgba(201, 162, 75, 0.06), transparent 55%);
}
.detail-hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, transparent 52%, var(--bg) 100%);
}
.detail-hero .container { position: relative; z-index: 1; }
.detail-hero .section-title { font-size: clamp(24px, 3.2vw, 40px); max-width: none; line-height: 1.3; }
.detail-hero .section-title .t-l1, .detail-hero .section-title .t-l2 { display: block; }
.detail-hero .section-title .t-l1 { margin-bottom: 4px; }
.detail-hero .section-lead { margin: 22px 0 6px; }
.detail-hero .hero-prose { color: var(--muted); max-width: 720px; font-size: 15px; line-height: 1.85; margin: 0; }
.detail-hero .hero-prose + .hero-prose { margin-top: 10px; }

/* ---------- Hero：更强电影底 + 暗角 + 缓移光斑 ---------- */
.hero {
  background:
    radial-gradient(1200px 620px at 70% -12%, rgba(201, 162, 75, 0.16), transparent 60%),
    radial-gradient(900px 520px at 12% 112%, rgba(201, 162, 75, 0.08), transparent 55%),
    radial-gradient(130% 120% at 50% 0%, transparent 42%, rgba(0, 0, 0, 0.55) 100%),
    linear-gradient(180deg, #0b0b0f, #0d0d12);
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(50% 40% at 68% 34%, rgba(201, 162, 75, 0.10), transparent 70%);
  animation: heroGlow 14s ease-in-out infinite alternate; pointer-events: none;
}
@keyframes heroGlow { 0% { transform: translate(-4%, -2%) scale(1); } 100% { transform: translate(4%, 3%) scale(1.12); } }
.hero .hero-bg::after {
  background:
    linear-gradient(180deg, rgba(10, 10, 13, 0.78) 0%, rgba(10, 10, 13, 0.5) 42%, rgba(10, 10, 13, 0.94) 100%),
    radial-gradient(900px 560px at 70% 28%, rgba(201, 162, 75, 0.14), transparent 62%);
}

/* ---------- 编辑式分栏（技术局：编号 + 规格标注） ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 84px); align-items: center; }
.split--rev .split-media { order: 2; }
.split-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 10px; }
.split-eyebrow { font-family: var(--mono); font-size: 34px; font-weight: 600; color: var(--gold); line-height: 1; letter-spacing: 0.02em; }
.split-spec { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.split h2 { margin: 14px 0 18px; }
.split p { color: var(--muted); max-width: 46ch; font-size: 16px; }
.split .pts { margin-top: 20px; color: var(--gold-soft); font-size: 14px; letter-spacing: 0.02em; }

/* ---------- 业务模块：大图长方形底图 + 文字叠底 ---------- */
.service-card { position: relative; min-height: clamp(360px, 42vw, 520px); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; align-items: flex-end; }
.service-card + .service-card { margin-top: 40px; }
.service-bg { position: absolute; inset: 0; z-index: 0; background: linear-gradient(135deg, #23232c, #15151b); transition: transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1); }
.service-bg img, .service-bg video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1); }
.service-shade { position: absolute; inset: 0; z-index: 1; background: linear-gradient(90deg, rgba(8,8,11,0.92) 0%, rgba(8,8,11,0.55) 52%, rgba(8,8,11,0.18) 100%); }
.service-card .media-tag { top: 18px; left: 18px; z-index: 3; }
.service-body { position: relative; z-index: 2; padding: clamp(28px, 5vw, 54px); max-width: 560px; }
.service-body .section-title { margin: 14px 0 18px; }
.service-body p { color: var(--muted); max-width: 46ch; font-size: 16px; }
.service-body .pts { margin-top: 20px; color: var(--gold-soft); font-size: 14px; letter-spacing: 0.02em; }
.service-card:hover .service-bg img, .service-card:hover .service-bg video { transform: scale(1.06); }

/* ---------- 制作模块：主卡片 + 子系统条带合并为整体 ---------- */
.production-module {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.production-module .service-card {
  border: none;
  border-radius: 0;
  min-height: clamp(340px, 38vw, 480px);
}
.production-module .service-card .service-shade {
  background: linear-gradient(90deg, rgba(8,8,11,0.92) 0%, rgba(8,8,11,0.55) 46%, rgba(8,8,11,0.22) 100%);
}
.production-module .module-link {
  position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%);
  z-index: 4; display: inline-flex; align-items: center; gap: 10px;
  padding: 5px 12px; background: rgba(10, 11, 13, 0.78);
  border: 1px solid var(--gold-line); border-radius: 2px;
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--gold-soft);
}
.production-module .module-link::before,
.production-module .module-link::after {
  content: ""; width: 16px; height: 1px; background: var(--gold);
}
.production-subbar {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  background: rgba(12, 12, 16, 0.6);
}
.production-sub {
  position: relative; padding: clamp(22px, 3vw, 32px);
  transition: background var(--transition-fast);
}
.production-sub + .production-sub { border-left: 1px solid var(--line); }
.production-sub h4 {
  margin: 0 0 8px; font-size: 16px; font-weight: 500; letter-spacing: -0.01em;
}
.production-sub p { color: var(--muted); font-size: 13.5px; line-height: 1.6; margin: 0; }
.production-sub::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--gold); opacity: 0; transition: opacity var(--transition-fast);
}
.production-sub:hover { background: var(--surface-2); }
.production-sub:hover::before { opacity: 1; }

/* ---------- 媒体框：hover 缓动放大 + 技术标签 ---------- */
.media-frame { position: relative; }
.media-tag {
  position: absolute; top: 14px; left: 14px; z-index: 3;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gold-soft); background: rgba(10, 11, 13, 0.7); border: 1px solid var(--gold-line);
  padding: 4px 10px; border-radius: 2px;
}
.media-frame {
  position: relative; overflow: hidden; border-radius: var(--radius);
  border: 1px solid var(--line); background: linear-gradient(135deg, #23232c, #15151b);
  aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center;
  color: var(--gold); font-size: 24px; letter-spacing: 0.22em;
}
.media-frame img, .media-frame video {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.media-frame:hover img, .media-frame:hover video { transform: scale(1.06); }

/* ---------- 数据条：技术局规格表 ---------- */
.bignum {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden;
  background: rgba(12, 12, 16, 0.42);
}
.bignum .bn {
  position: relative;
  padding: clamp(38px, 5vw, 64px) clamp(16px, 2.2vw, 28px);
  text-align: center;
}
.bignum .bn + .bn::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  height: 46%; width: 1px; background: var(--line);
}
.bn__num {
  display: inline-flex; align-items: flex-start; justify-content: center;
  line-height: 1;
}
.bn__num b {
  font-family: var(--mono); font-weight: 500; line-height: 1;
  font-size: clamp(40px, 5.4vw, 72px); letter-spacing: -0.03em;
  color: var(--gold-soft);
  text-shadow: 0 0 32px rgba(201, 162, 75, 0.18);
}
.bn__num .bn__unit {
  font-family: var(--mono); font-weight: 500;
  font-size: clamp(16px, 1.8vw, 24px);
  color: var(--gold); line-height: 1.3;
  margin-left: 5px;
}
.bn__label {
  display: block; margin-top: 18px;
  font-family: var(--body); font-size: clamp(14px, 1.3vw, 17px); letter-spacing: 0.06em;
  color: var(--text);
}

/* ---------- 交付之道：三步法（沉稳底蕴） ---------- */
.method-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  margin-top: 12px; border-top: 1px solid var(--line);
}
.method-step {
  position: relative; padding: clamp(34px, 4vw, 52px) clamp(20px, 2.4vw, 34px);
  border-bottom: 1px solid var(--line);
}
.method-step + .method-step { border-left: 1px solid var(--line); }
.method-num {
  display: block; font-family: var(--serif); font-weight: 600;
  font-size: clamp(40px, 4.6vw, 60px); line-height: 1; color: var(--gold);
  opacity: 0.86; margin-bottom: 22px;
}
.method-step h3 {
  margin: 0 0 12px; font-size: clamp(19px, 2vw, 23px); font-weight: 600;
  letter-spacing: 0.02em; color: var(--text);
}
.method-step p {
  margin: 0; color: var(--muted); font-size: 15px; line-height: 1.85; max-width: 34ch;
}

/* ---------- 错落案例网格（首页精选） ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-grid > *:nth-child(3n + 2) { margin-top: 42px; }

/* ---------- stagger 错峰揭示 ---------- */
.stagger .reveal:nth-child(1) { transition-delay: 0s; }
.stagger .reveal:nth-child(2) { transition-delay: 0.09s; }
.stagger .reveal:nth-child(3) { transition-delay: 0.18s; }
.stagger .reveal:nth-child(4) { transition-delay: 0.27s; }
.stagger .reveal:nth-child(5) { transition-delay: 0.36s; }
.stagger .reveal:nth-child(6) { transition-delay: 0.45s; }

/* ---------- 卡片 hover 升级（金色描边 + 辉光顶条） ---------- */
.card:hover { border-color: rgba(201, 162, 75, 0.4); }
.card:hover::before { box-shadow: 0 0 18px rgba(201, 162, 75, 0.4); }
.network-card:hover { border-color: rgba(201, 162, 75, 0.4); background: var(--surface-2); }

/* ---------- 响应式：升级包新增布局 ---------- */
@media (max-width: 980px) {
  .split, .split--rev { grid-template-columns: 1fr; }
  .split--rev .split-media { order: 0; }
  .service-card { min-height: 420px; }
  .service-shade { background: linear-gradient(0deg, rgba(8,8,11,0.95) 0%, rgba(8,8,11,0.65) 60%, rgba(8,8,11,0.35) 100%); }
  .production-subbar { grid-template-columns: 1fr; }
  .production-sub + .production-sub { border-left: none; border-top: 1px solid var(--line); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid > *:nth-child(3n + 2) { margin-top: 0; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid > *:nth-child(3n + 2) { margin-top: 0; }
  .bignum { grid-template-columns: repeat(2, 1fr); }
  .bignum .bn + .bn::before { display: none; }
  .bignum .bn:nth-child(3), .bignum .bn:nth-child(4) { border-top: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .service-card { min-height: 360px; }
  .service-body { max-width: 100%; }
  .feature-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .case-group { margin-bottom: 40px; }
  .bignum { grid-template-columns: 1fr; }
  .bignum .bn + .bn::before { display: none; }
  .bignum .bn + .bn { border-top: 1px solid var(--line); }
  .bignum .bn:nth-child(3), .bignum .bn:nth-child(4) { border-top: 1px solid var(--line); }
}
@media (prefers-reduced-motion: reduce) {
  .hero::before { animation: none; }
}

/* ---------- 整幅 CTA 电影感条带 ---------- */
.cta-band {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 400px at 50% -10%, rgba(201, 162, 75, 0.12), transparent 60%),
    linear-gradient(180deg, var(--bg-2), #0b0b0f);
  border-top: 1px solid var(--line);
  padding: 110px 0;
}
.cta-band .section-title { font-size: clamp(28px, 4.4vw, 50px); }

/* ---------- 响应式（原） ---------- */
@media (max-width: 980px) {
  .grid-3, .grid-4, .stats, .network-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .method-grid { grid-template-columns: 1fr; }
  .method-step + .method-step { border-left: none; }
}
@media (max-width: 720px) {
  .nav-links { position: fixed; top: var(--nav-h); right: 0; width: 240px; height: calc(100vh - var(--nav-h));
    background: rgba(12,12,15,0.97); flex-direction: column; align-items: flex-start; padding: 24px; gap: 18px;
    transform: translateX(110%); transition: 0.3s; border-left: 1px solid var(--line); }
  .nav-links.open { transform: none; }
  .nav-burger { display: block; }
  .grid-2, .grid-3, .grid-4, .stats, .network-grid { grid-template-columns: 1fr; }
  .news-item { flex-direction: column; }
  .news-thumb { width: 100%; flex: none; }
  .section { padding: 64px 0; }
  .detail-hero .section-title { white-space: normal; }
}

/* ========== 业务服务页（首页的展开说明） ========== */
.block-head { margin-bottom: 24px; }
.block-head .eyebrow { display: block; margin-bottom: 12px; }
.block-intro { max-width: 760px; margin-bottom: 0; }
/* 子版块标题 H3：清晰高于正文与卡片内标题（修复此前 13px 标签导致的层级倒挂） */
.sub-head {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--serif); font-size: 22px; font-weight: 600; line-height: 1.3;
  color: var(--text); margin: 48px 0 24px;
}
.sub-head::before {
  content: ""; width: 26px; height: 2px; flex: none;
  background: var(--gold); box-shadow: 0 0 10px rgba(227,165,46,0.5);
}
.block-intro + .sub-head { margin-top: 40px; }
.prod-sub > .sub-head:first-child { margin-top: 0; }
.block-sub-desc { color: var(--muted); font-size: 14px; line-height: 1.8; max-width: 760px; margin: 0 0 24px; }
.block-label {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gold-soft); margin: 0 0 16px; display: flex; align-items: center; gap: 10px;
}
.block-label::before { content: ""; width: 14px; height: 1px; background: var(--gold-soft); }

/* 策划四步法 */
.flow-steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: rgba(12,12,16,0.4); margin-top: 4px;
}
.flow-step { position: relative; padding: 32px 24px; border-right: 1px solid var(--line); }
.flow-step:last-child { border-right: none; }
.flow-num { display: block; font-family: var(--serif); font-weight: 600; font-size: 38px; line-height: 1; color: var(--gold); opacity: 0.85; margin-bottom: 16px; }
.flow-step h3 { margin: 0 0 10px; font-size: 18px; font-weight: 600; color: var(--text); }
.flow-step p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }

/* 交付物 chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-size: 13px; color: var(--gold-soft); border: 1px solid rgba(227,165,46,0.32);
  background: var(--gold-dim); padding: 7px 14px; border-radius: 999px; letter-spacing: 0.02em;
}
.block-foot { margin-top: 40px; gap: 40px; align-items: center; }
.block-foot .sub-head { margin-top: 0; }

/* 服务页长图 + 图下文案（策划/设计复用） */
.service-showcase { margin-top: 56px; }
.service-showcase .media-frame {
  width: 100%;
  aspect-ratio: 21 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.service-caption { padding-top: 32px; max-width: 860px; margin: 0 auto; text-align: center; }
.service-caption h3 {
  font-family: var(--serif); font-size: 22px; font-weight: 600; color: var(--text);
  margin: 0 0 18px; letter-spacing: 0.04em;
}
.service-caption h3::after {
  content: ""; display: block; width: 28px; height: 1px;
  background: var(--gold); margin: 14px auto 0;
  box-shadow: 0 0 10px rgba(227,165,46,0.5);
}
.service-caption p { color: var(--muted); font-size: 15px; line-height: 1.9; margin: 0 0 22px; }
.service-caption .chips { justify-content: center; }

@media (max-width: 720px) {
  .service-showcase { margin-top: 40px; }
  .service-showcase .media-frame { aspect-ratio: 16 / 10; }
  .service-caption { padding-top: 24px; }
  .service-caption p { font-size: 14px; }
}

/* 设计三维 */
.dim-cards { margin-top: 0; }
.dim-cards .card h3 { font-size: 18px; margin: 0 0 10px; }
.dim-cards .card .ico { font-size: 26px; margin-bottom: 14px; color: var(--gold); }

/* 制作子版块 */
.prod-sub { padding-top: 56px; margin-top: 56px; border-top: 1px solid var(--line); }
.prod-sub:first-of-type { border-top: none; margin-top: 48px; padding-top: 0; }
.prod-group { margin-top: 28px; }

/* 团队照片 — 单张大图外框（带尺寸标注占位） */
.team-hero { width: 100%; }
.team-hero__img {
  width: 100%; aspect-ratio: 12 / 5; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); background: linear-gradient(135deg,#23232c,#15151b);
}
.team-hero__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.team-hero__placeholder {
  width: 100%; aspect-ratio: 12 / 5; border-radius: var(--radius);
  border: 2px dashed rgba(227,165,46,0.4); background: rgba(12,12,16,0.4);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
}
.team-hero__dim {
  font-family: var(--mono); font-size: 15px; font-weight: 600;
  color: var(--gold-soft); letter-spacing: 0.1em; padding: 10px 24px;
  border: 1px solid rgba(227,165,46,0.3); border-radius: var(--radius);
  background: rgba(227,165,46,0.06);
}
.team-hero__hint { font-size: 13px; color: var(--muted); letter-spacing: 0.04em; }

/* 技术团队头像墙 — 3~4 行滚动照片 */
.team-wall { display: flex; flex-direction: column; gap: 4px; padding: 0; }
.team-row { position: relative; overflow: hidden; width: 100%; -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%); mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%); }
.team-track { display: flex; width: max-content; animation-name: team-scroll-left; animation-duration: var(--team-duration, 56s); animation-timing-function: linear; animation-iteration-count: infinite; will-change: transform; }
.team-track--reverse { animation-name: team-scroll-right; }
.team-wall:hover .team-track { animation-play-state: paused; }
@keyframes team-scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@keyframes team-scroll-right {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}
/* 间距只放在卡片左右内边距，上下靠 .team-wall 的 gap:4px —— 纵横均 4px，头像保持正方形 */
.team-strip { display: flex; align-items: center; gap: 0; flex: 0 0 auto; }
.team-card { flex: 0 0 auto; width: 92px; height: 88px; padding: 0 2px; overflow: hidden; transition: transform 0.25s ease; }
.team-card:hover { transform: scale(1.05); z-index: 1; }
.team-avatar {
  width: 100%; height: 100%; border-radius: 0; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #23232c, #15151b);
}
.team-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; filter: grayscale(0.55); transition: filter 0.3s ease, transform 0.3s ease; }
.team-avatar span { font-size: 24px; font-weight: 700; color: var(--gold-soft); }
.team-card:hover .team-avatar img { filter: grayscale(0); transform: scale(1.06); }
@media (max-width: 720px) {
  .team-card { width: 74px; height: 70px; padding: 0 2px; }
}
@media (prefers-reduced-motion: reduce) {
  .team-track, .team-track--reverse { animation: none; }
}

/* 系统图 */
.diagram-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.diagram { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.diagram img { width: 100%; display: block; }
.diagram figcaption { padding: 12px 14px; font-size: 13px; color: var(--muted); border-top: 1px solid var(--line); }
.diagram.ph { min-height: 180px; display: flex; align-items: center; justify-content: center; }
.diagram.ph figcaption { border-top: none; }

/* 媒体画廊（影像 / 视频） */
.media-gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.media-item { cursor: pointer; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--surface); transition: 0.25s; }
.media-item:hover { border-color: rgba(201,162,75,0.45); transform: translateY(-3px); }
.media-item.is-featured { grid-column: 1 / -1; transform: none; }
.media-item.is-featured .media-thumb { aspect-ratio: auto; }
.media-item.is-featured .media-thumb img { object-fit: contain; background: #0a0a0d; }
.media-thumb { position: relative; aspect-ratio: 4/3; overflow: hidden; background: linear-gradient(135deg,#23232c,#15151b); }
.media-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.media-item:hover .media-thumb img { transform: scale(1.06); }
.media-item.is-featured:hover .media-thumb img { transform: scale(1.03); }
.media-thumb .play {
  position: absolute; inset: 0; margin: auto; width: 54px; height: 54px; border-radius: 50%;
  background: rgba(10,11,13,0.6); border: 1px solid var(--gold-line); color: var(--gold-soft);
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.ph { display: flex; align-items: center; justify-content: center; color: var(--gold-soft); font-size: 13px; letter-spacing: 0.06em; text-align: center; padding: 16px; opacity: 0.85; }

/* 设备品牌墙：双行反向滚动 marquee */
.equip-wall { display: flex; flex-direction: column; gap: 14px; }
.equip-wall + .block-label { margin-top: 48px; }
.equip-track {
  position: relative; overflow: hidden; width: 100%;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 3%, #000 97%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 3%, #000 97%, transparent 100%);
}
.equip-move {
  display: flex; width: max-content;
  animation: equip-scroll-left calc(var(--brand-count, 6) * 3.6s) linear infinite;
  will-change: transform;
}
.equip-move--reverse {
  animation: equip-scroll-right calc(var(--brand-count, 6) * 3.6s) linear infinite;
}
.equip-wall:hover .equip-move { animation-play-state: paused; }
@keyframes equip-scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@keyframes equip-scroll-right {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}
.equip-strip { display: flex; align-items: center; flex: 0 0 auto; }
.equip-logo {
  flex: 0 0 auto;
  width: 192px; height: 108px;
  margin-right: 10px;
  display: flex; align-items: center; justify-content: center;
  padding: 14px;
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
  transition: 0.25s;
  box-sizing: border-box;
}
.equip-logo img {
  height: calc(74px * var(--logo-scale, 1));
  width: auto;
  max-width: calc(164px * var(--logo-scale, 1));
  object-fit: contain;
  filter: grayscale(1);
  transition: 0.25s;
}
.equip-logo:hover img { filter: none; }
.equip-logo--text span {
  font-size: 14px; font-weight: 600; color: #555;
  text-align: center; white-space: nowrap;
}
@media (max-width: 720px) {
  .equip-logo { width: 148px; height: 84px; }
  .equip-logo img { height: calc(58px * var(--logo-scale, 1)); max-width: calc(124px * var(--logo-scale, 1)); }
  .equip-move { animation-duration: calc(var(--brand-count, 6) * 2.8s); }
  .equip-move--reverse { animation-duration: calc(var(--brand-count, 6) * 2.8s); }
}
@media (prefers-reduced-motion: reduce) {
  .equip-move, .equip-move--reverse { animation: none; }
}

/* 设备品类 — 去图标、居中、精致小字 */
.equip-cats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.equip-cat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 28px;
  border-right: 1px solid var(--line);
  background: transparent;
  transition: background 0.35s ease;
}
.equip-cat:last-child {
  border-right: none;
}
.equip-cat:hover { background: rgba(227, 165, 46, 0.035); }
.equip-cat__dot {
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 10px rgba(227, 165, 46, 0.45);
  margin-bottom: 18px;
}
.equip-cat h4 {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  color: rgba(242, 239, 230, 0.92);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin: 0 0 12px;
}
.equip-cat p {
  font-size: 14px;
  line-height: 1.8;
  color: #8a919a;
  margin: 0;
  max-width: 36ch;
}

@media (max-width: 1100px) {
  .equip-cats { grid-template-columns: repeat(3, 1fr); }
  .equip-cat:nth-child(3) { border-right: none; }
  .equip-cat:nth-child(n+4) { border-top: 1px solid var(--line); }
  .equip-cat:nth-child(4), .equip-cat:nth-child(5) { border-right: none; }
}
@media (max-width: 720px) {
  .equip-cats { grid-template-columns: 1fr; }
  .equip-cat { padding: 28px 20px; border-right: none; border-bottom: 1px solid var(--line); }
  .equip-cat:last-child { border-bottom: none; }
}

/* 空数据提示 */
.empty-block { color: var(--muted); font-size: 14px; padding: 26px; border: 1px dashed var(--line-strong); border-radius: var(--radius); background: rgba(12,12,16,0.3); text-align: center; }

/* 灯箱 */
.lb { z-index: 200; }
.lb-inner { max-width: min(92vw, 1100px); }
.lb-inner img, .lb-inner video { border-radius: var(--radius); box-shadow: var(--shadow); background: #000; }
.lb .close-x { position: fixed; top: 18px; right: 22px; z-index: 2; color: #fff; font-size: 30px; }

/* 响应式（新组件） */
@media (max-width: 980px) {
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .flow-step:nth-child(2) { border-right: none; }
  .flow-step:nth-child(1), .flow-step:nth-child(2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 720px) {
  .flow-steps { grid-template-columns: 1fr; }
  .flow-step { border-right: none; border-bottom: 1px solid var(--line); }
  .flow-step:last-child { border-bottom: none; }
  .block-foot { grid-template-columns: 1fr; gap: 24px; }
}