/* ============================================================
   BIBI Digital · 全站共享样式
   依赖：Google Fonts（Big Shoulders / Instrument Sans / JetBrains Mono）
   使用：所有页面 <link href="assets/shared.css" rel="stylesheet">
   ============================================================ */

/* ── 配色方案变量系统 ─────────────────────────────
   高调 2 套（青瓷 / 薄荷）+ 暗调 3 套（酸绿 / 霓虹 / 黑金）
   --accent-ink: 按钮等实色块上的文字色
   --nav-bg: 滚动后导航栏毛玻璃底色
   ──────────────────────────────────────────────── */

/* 1 · 暗夜酸绿（暗调）— 品牌默认 */
[data-theme="dark-acid"] {
  --bg: #08080c;
  --bg-2: #0e0e14;
  --bg-3: #14141c;
  --bg-4: #1a1a24;
  --ink: #f0f0f5;
  --ink-2: #c8c8d0;
  --muted: #8a8a9a;
  --muted-2: #55556a;
  --accent: #60d937;
  --accent-2: #24a586;
  --accent-3: #9aeace;
  --accent-ink: #08080c;
  --accent-dim: rgba(96, 217, 55, 0.14);
  --border: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.03);
  --nav-bg: rgba(8, 8, 12, 0.72);
  --noise-opacity: 0.10;
  --noise-blend: overlay;
}

/* 2 · 流动青瓷（高调）— 参考JSON：SPRING CELADON / YOUNG WILLOW / PINE LEAF / BLACK MOSS */
[data-theme="flow-green"] {
  --bg: #F0FBEF;
  --bg-2: #E4F6E9;
  --bg-3: #D6F0DE;
  --bg-4: #C8EAD3;
  --ink: #0A382E;
  --ink-2: #2A5748;
  --muted: #4A6E5E;
  --muted-2: #7E9F8E;
  --accent: #0F8F6B;
  --accent-2: #22C79A;
  --accent-3: #8FE3B0;
  --accent-ink: #F0FBEF;
  --accent-dim: rgba(15, 143, 107, 0.16);
  --border: rgba(10, 56, 46, 0.15);
  --border-2: rgba(10, 56, 46, 0.06);
  --nav-bg: rgba(240, 251, 239, 0.82);
  --noise-opacity: 0.14;
  --noise-blend: multiply;
}

/* 3 · 薄荷纸感（高调）— PPT原色 */
[data-theme="ppt-original"] {
  --bg: #F2F2EE;
  --bg-2: #E9E9E1;
  --bg-3: #DDDDD3;
  --bg-4: #D0D0C6;
  --ink: #16181a;
  --ink-2: #34383a;
  --muted: #5f6158;
  --muted-2: #8f9188;
  --accent: #0F9B71;
  --accent-2: #1A9C76;
  --accent-3: #4ECCA3;
  --accent-ink: #F2F2EE;
  --accent-dim: rgba(15, 155, 113, 0.16);
  --border: rgba(0, 0, 0, 0.10);
  --border-2: rgba(0, 0, 0, 0.04);
  --nav-bg: rgba(242, 242, 238, 0.85);
  --noise-opacity: 0.13;
  --noise-blend: multiply;
}

/* 4 · 霓虹夜（暗调）— 高饱和荧光 */
[data-theme="high-acid"] {
  --bg: #0a0414;
  --bg-2: #12081f;
  --bg-3: #1a0d2c;
  --bg-4: #24143a;
  --ink: #f5f0ff;
  --ink-2: #d0c8e8;
  --muted: #8a7aa8;
  --muted-2: #5a4a7a;
  --accent: #FF2D7F;
  --accent-2: #BF00FF;
  --accent-3: #39FF14;
  --accent-ink: #12081f;
  --accent-dim: rgba(255, 45, 127, 0.14);
  --border: rgba(255, 255, 255, 0.07);
  --border-2: rgba(255, 255, 255, 0.02);
  --nav-bg: rgba(10, 4, 20, 0.75);
  --noise-opacity: 0.11;
  --noise-blend: overlay;
}

/* 5 · 黑金（暗调）— 极简奢华 */
[data-theme="minimal-gold"] {
  --bg: #050505;
  --bg-2: #0c0c0c;
  --bg-3: #121212;
  --bg-4: #181818;
  --ink: #E8E0D0;
  --ink-2: #C0B8A8;
  --muted: #7a7466;
  --muted-2: #4a4438;
  --accent: #C9A84C;
  --accent-2: #8B7430;
  --accent-3: #E0C878;
  --accent-ink: #050505;
  --accent-dim: rgba(201, 168, 76, 0.14);
  --border: rgba(201, 168, 76, 0.10);
  --border-2: rgba(201, 168, 76, 0.04);
  --nav-bg: rgba(5, 5, 5, 0.75);
  --noise-opacity: 0.10;
  --noise-blend: overlay;
}

:root {
  --f-display: 'Big Shoulders', 'Arial Narrow', sans-serif;
  --f-body: 'Instrument Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --f-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --max-w: 1320px;
  --gutter: 2rem;
  --section-py: 7rem;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--f-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background 0.5s ease, color 0.5s ease;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
::selection { background: var(--accent); color: var(--bg); }

/* ── 视觉层 ─────────────────────────────── */
.canvas-bg {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: -2; pointer-events: none;
}
.particles-layer {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: -1; pointer-events: none; opacity: 0.3;
}
.grain {
  position: fixed; inset: 0; z-index: 9998; pointer-events: none;
  opacity: var(--noise-opacity); mix-blend-mode: var(--noise-blend);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  transition: opacity 0.5s ease;
}
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index: 10001; width: 0%; transition: width 0.1s linear;
}

/* ── 配色切换器 ──────────────────────────── */
.theme-switcher {
  position: fixed; top: 50%; left: 1rem; transform: translateY(-50%);
  z-index: 10000;
  display: flex; flex-direction: column; gap: 0.6rem;
  padding: 0.6rem 0.5rem;
  background: var(--nav-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border); border-radius: 100px;
  transition: border-color 0.4s ease, background 0.4s ease;
}
.theme-switcher-label {
  font-family: var(--f-mono); font-size: 0.6rem;
  color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase;
  text-align: center; writing-mode: vertical-rl;
  margin: 0.2rem auto 0.4rem;
}
.theme-btn {
  width: 28px; height: 28px; border-radius: 50%; border: 2px solid transparent;
  cursor: pointer; transition: all 0.3s cubic-bezier(0.16,1,0.3,1);
  position: relative; padding: 0;
}
.theme-btn:hover { transform: scale(1.15); }
.theme-btn.active {
  border-color: currentColor;
  box-shadow: 0 0 10px currentColor;
  transform: scale(1.05);
}
.theme-btn[data-scheme="dark-acid"] { background: linear-gradient(135deg, #60d937, #24a586); color: #60d937; }
.theme-btn[data-scheme="flow-green"] { background: linear-gradient(135deg, #8FE3B0, #0B5F51); color: #22C79A; }
.theme-btn[data-scheme="ppt-original"] { background: linear-gradient(135deg, #4ECCA3, #1A9C76); color: #2DBE8C; }
.theme-btn[data-scheme="high-acid"] { background: linear-gradient(135deg, #FF2D7F 0%, #BF00FF 50%, #39FF14 100%); color: #FF2D7F; }
.theme-btn[data-scheme="minimal-gold"] { background: linear-gradient(135deg, #C9A84C, #8B7430); color: #C9A84C; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }

/* ── 排版组件 ────────────────────────────── */
.sec-label {
  font-family: var(--f-mono); font-size: 0.7rem; color: var(--accent);
  letter-spacing: 0.18em; text-transform: uppercase;
  margin-bottom: 0.75rem; display: flex; align-items: center; gap: 0.6rem;
  transition: color 0.5s ease;
}
.sec-label::before { content: ''; width: 24px; height: 1px; background: var(--accent); transition: background 0.5s ease; }
.sec-title {
  font-family: var(--f-display); font-weight: 900;
  font-size: clamp(2rem, 4.5vw, 3.25rem); line-height: 1;
  letter-spacing: -0.01em; margin-bottom: 1rem;
  transition: color 0.5s ease;
}
.sec-sub { font-size: 1rem; color: var(--muted); max-width: 540px; margin-bottom: 3rem; transition: color 0.5s ease; }

/* ── NAV ─────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 1.25rem var(--gutter); display: flex;
  justify-content: space-between; align-items: center; transition: all 0.4s var(--ease);
}
.nav--scrolled {
  background: var(--nav-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border); padding: 0.85rem var(--gutter);
}
.logo { display: flex; align-items: center; gap: 0.6rem; }
/* v1.3 双B渐变徽章版（badge.png = 新 logo 图形区裁切，深底烤入，各主题原样显示，不 invert；
   暗主题靠 --border 细描边与背景区分；回退链 v1.2 logo.png(OLD透明盾) → v1.1 logo.jpg → v1.0 CSS六边形，见下注释） */
.logo-mark {
  width: 28px; height: 28px;
  background: url('images/logo/badge.png') center / cover no-repeat;
  border-radius: 7px;
  box-shadow: 0 0 0 1px var(--border);
  opacity: 0.95; transition: opacity 0.3s, box-shadow 0.5s;
}
.logo:hover .logo-mark { opacity: 1; }
/* v1.2 透明盾版（黑白盾标，暗主题 invert 反白；文件在 images/logo/old/logo.png，恢复时取消注释并删除上方规则）
.logo-mark {
  width: 30px; height: 30px;
  background: url('images/logo/old/logo.png') center / contain no-repeat;
  opacity: 0.95; transition: opacity 0.3s, filter 0.5s;
}
.logo:hover .logo-mark { opacity: 1; }
body[data-theme="dark-acid"] .logo-mark,
body[data-theme="high-acid"] .logo-mark,
body[data-theme="minimal-gold"] .logo-mark { filter: invert(1); }
*/
/* v1.1 JPG 徽章版（黑底圆角芯片，文件在 images/logo/old/logo.jpg）
.logo-mark {
  width: 28px; height: 28px;
  background: url('images/logo/old/logo.jpg') center / cover no-repeat;
  border-radius: 7px;
  box-shadow: 0 0 0 1px var(--border);
  opacity: 0.92; transition: opacity 0.3s, box-shadow 0.5s;
}
.logo:hover .logo-mark { opacity: 1; }
*/
/* 原 v1.0 CSS 六边形标记（恢复时取消注释并删除上方徽章规则）
.logo-mark {
  width: 22px; height: 26px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  clip-path: polygon(50% 0%, 100% 18%, 100% 72%, 50% 100%, 0% 72%, 0% 18%);
  opacity: 0.85; transition: opacity 0.3s, background 0.5s; position: relative;
}
.logo-mark::after {
  content: ''; position: absolute; inset: 3px; background: var(--bg);
  clip-path: polygon(50% 0%, 100% 18%, 100% 72%, 50% 100%, 0% 72%, 0% 18%);
  transition: background 0.5s ease;
}
*/
.logo-text {
  font-family: var(--f-display); font-weight: 900; font-size: 1.3rem;
  letter-spacing: 0.08em; color: var(--ink);
  transition: color 0.5s ease;
}
.logo-text .cn { font-family: var(--f-display); font-weight: 300; font-size: 1.05rem; letter-spacing: 0.02em; color: var(--ink); margin-left: 0.35rem; transition: color 0.5s ease, opacity 0.3s ease; opacity: 0.85; }
.nav-links { display: flex; gap: 2.2rem; align-items: center; }
.nav-links a {
  font-size: 0.82rem; color: var(--muted); transition: color 0.25s;
  position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 1px;
  background: var(--accent); transition: width 0.3s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after { width: 100%; background: var(--accent); }
/* 导航 CTA — 中性反色胶囊：默认跟随主题明暗，hover 才浮现品牌色 */
.nav-cta {
  padding: 0.55rem 1.35rem; background: var(--ink); color: var(--bg);
  font-size: 0.8rem; font-weight: 600; border-radius: 100px;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), transform 0.25s var(--ease), box-shadow 0.3s var(--ease);
}
.nav-cta:hover {
  background: var(--accent); color: var(--accent-ink);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-dim);
}
.nav-burger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-burger span { width: 22px; height: 2px; background: var(--ink); transition: 0.3s; }

/* ── HERO（首页全屏）──────────────────────── */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; padding-top: 5rem;
}
.hero-fade {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, transparent 55%, var(--bg) 100%);
  transition: background 0.5s ease;
}
.hero-shield {
  position: absolute; right: 6%; top: 50%; transform: translateY(-50%);
  width: 420px; height: 500px; z-index: 1; opacity: 0.08; pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: var(--max-w); margin: 0 auto; width: 100%; padding: 0 var(--gutter); }
.hero-label {
  font-family: var(--f-mono); font-size: 0.72rem; color: var(--accent);
  letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 1.25rem;
  display: flex; align-items: center; gap: 0.6rem;
  opacity: 1; transition: color 0.5s ease;
}
.hero-label::before { content: ''; width: 32px; height: 1px; background: var(--accent); transition: background 0.5s ease; }
.hero-title {
  font-family: var(--f-display); font-weight: 900;
  font-size: clamp(3rem, 9vw, 7rem); line-height: 0.9;
  letter-spacing: -0.025em; margin-bottom: 1.5rem;
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .char { display: inline-block; opacity: 1; transform: none; }
.hero-title .accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: background 0.5s ease;
}
.hero-sub {
  font-size: 1.2rem; color: var(--ink-2); max-width: 520px;
  margin-bottom: 2.5rem; line-height: 1.6; opacity: 1;
  transition: color 0.5s ease;
}
.hero-cta { display: flex; gap: 1rem; opacity: 1; }

.scroll-indicator {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.6rem;
  font-family: var(--f-mono); font-size: 0.62rem; color: var(--muted-2);
  letter-spacing: 0.2em; opacity: 1; z-index: 2;
  transition: color 0.5s ease;
}
.scroll-line {
  width: 1px; height: 36px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2.5s ease-in-out infinite;
  transition: background 0.5s ease;
}
@keyframes scrollPulse { 0%, 100% { transform: scaleY(1); opacity: 0.5; } 50% { transform: scaleY(1.3); opacity: 1; } }

/* ── PAGE HERO（次级页头部 · v1.0 压缩：内容驱动高度，去掉 52vh 空白）── */
.page-hero {
  min-height: 0; display: flex; align-items: flex-end;
  position: relative; overflow: hidden;
  padding: 7.5rem 0 3rem;
}
/* 单案例页 hero：更紧凑，为 16:9 KV 首屏完整展示让位 */
.page-hero--case { padding: 6.25rem 0 1.75rem; }
.page-hero--case .page-hero-title { font-size: clamp(2.25rem, 5vw, 3.75rem); margin-bottom: 0.75rem; }
.page-hero--case .page-hero-breadcrumb { margin-bottom: 1rem; }
.page-hero--case .page-hero-sub { font-size: 1rem; }
.page-hero--case .case-hero-meta { margin-top: 1.25rem; padding: 1rem 0; }
.page-hero-fade {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, transparent 40%, var(--bg) 100%);
  transition: background 0.5s ease;
}
.page-hero-content { position: relative; z-index: 2; width: 100%; }
.page-hero-label {
  font-family: var(--f-mono); font-size: 0.72rem; color: var(--accent);
  letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 1.1rem;
  display: flex; align-items: center; gap: 0.6rem;
  transition: color 0.5s ease;
}
.page-hero-label::before { content: ''; width: 32px; height: 1px; background: var(--accent); transition: background 0.5s ease; }
.page-hero-title {
  font-family: var(--f-display); font-weight: 900;
  font-size: clamp(3rem, 8vw, 6rem); line-height: 0.9;
  letter-spacing: -0.02em; margin-bottom: 1.25rem;
  transition: color 0.5s ease;
}
.page-hero-title .accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: background 0.5s ease;
}
.page-hero-sub {
  font-size: 1.15rem; color: var(--ink-2); max-width: 560px; line-height: 1.6;
  transition: color 0.5s ease;
}
.page-hero-breadcrumb {
  font-family: var(--f-mono); font-size: 0.68rem; color: var(--muted-2);
  letter-spacing: 0.08em; margin-bottom: 1.5rem;
  display: flex; align-items: center; gap: 0.5rem;
  transition: color 0.5s ease;
}
.page-hero-breadcrumb a:hover { color: var(--accent); }

/* ── 按钮 ────────────────────────────────── */
.btn {
  padding: 0.9rem 1.8rem; font-family: var(--f-body); font-size: 0.85rem;
  font-weight: 600; cursor: pointer; transition: all 0.3s var(--ease);
  display: inline-flex; align-items: center; gap: 0.5rem;
  border: none; border-radius: 4px; position: relative; overflow: hidden;
}
.btn--primary { background: var(--accent); color: var(--accent-ink); transition: all 0.3s ease, background 0.5s ease, color 0.5s ease; }
.btn--primary:hover { background: var(--accent-2); color: var(--accent-ink); transform: translateY(-2px); box-shadow: 0 8px 28px var(--accent-dim); }
.btn--outline { background: transparent; color: var(--ink); border: 1px solid var(--border); transition: all 0.3s ease, color 0.5s ease, border-color 0.5s ease; }
.btn--outline:hover { border-color: var(--accent); color: var(--accent); }
.btn .arrow { transition: transform 0.25s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ── MARQUEE ─────────────────────────────── */
.marquee { overflow: hidden; padding: 1.25rem 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--bg-2); transition: background 0.5s ease, border-color 0.5s ease; }
.marquee-track {
  display: flex; gap: 3rem; white-space: nowrap; animation: marquee 35s linear infinite;
  align-items: center; width: max-content;
}
.marquee-track span { font-family: var(--f-display); font-size: 1.4rem; font-weight: 700; color: var(--muted); letter-spacing: 0.04em; flex-shrink: 0; transition: color 0.3s; }
.marquee-track span:hover { color: var(--accent); }
.marquee-track .dot { width: 4px; height: 4px; background: var(--accent); border-radius: 50%; flex-shrink: 0; transition: background 0.5s ease; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ── SECTIONS ─────────────────────────────── */
.section { padding: var(--section-py) 0; position: relative; }
.section-header { margin-bottom: 3.5rem; }
.section-header .sec-sub { margin-bottom: 0; }

/* ── SERVICES（首页卡片 + 服务页详情）───────── */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: border-color 0.5s ease, background 0.5s ease; }
.service-card { background: var(--bg-2); padding: 2.5rem 2rem; transition: all 0.35s var(--ease); position: relative; cursor: pointer; overflow: hidden; }
.service-card::before { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease); }
.service-card:hover { background: var(--bg-3); }
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover .service-arrow { color: var(--accent); transform: translateX(4px); }
.service-card:hover .service-num { color: var(--accent); }
.service-num { font-family: var(--f-mono); font-size: 0.7rem; color: var(--muted-2); letter-spacing: 0.1em; margin-bottom: 2rem; transition: color 0.3s; }
.service-title { font-family: var(--f-display); font-weight: 700; font-size: 1.5rem; letter-spacing: 0.02em; margin-bottom: 0.75rem; color: var(--ink); transition: color 0.5s ease; }
.service-desc { font-size: 0.85rem; color: var(--muted); line-height: 1.65; margin-bottom: 1.5rem; transition: color 0.5s ease; }
.service-tags { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-bottom: 2rem; }
.service-tag { font-family: var(--f-mono); font-size: 0.65rem; color: var(--muted); padding: 0.15rem 0.5rem; background: var(--bg-4); border-radius: 3px; transition: all 0.5s ease; }
.service-arrow { font-family: var(--f-mono); font-size: 0.8rem; color: var(--muted); transition: all 0.3s; }

/* 服务页详情布局 */
.svc-block {
  padding: 4.5rem 0; border-top: 1px solid var(--border);
  transition: border-color 0.5s ease;
}
.svc-block:first-of-type { border-top: none; }
.svc-block-head { display: grid; grid-template-columns: 1fr 2fr; gap: 3rem; margin-bottom: 3rem; align-items: start; }
.svc-block-num { font-family: var(--f-mono); font-size: 0.7rem; color: var(--muted-2); letter-spacing: 0.12em; margin-bottom: 0.75rem; transition: color 0.5s ease; }
.svc-block-title { font-family: var(--f-display); font-weight: 900; font-size: clamp(2rem, 4vw, 3rem); line-height: 0.95; letter-spacing: -0.01em; transition: color 0.5s ease; }
.svc-block-title .sub { display: block; font-size: 0.4em; font-weight: 700; color: var(--accent); margin-top: 0.4rem; letter-spacing: 0.06em; transition: color 0.5s ease; }
.svc-block-desc { font-size: 1rem; color: var(--muted); line-height: 1.75; max-width: 640px; transition: color 0.5s ease; }
.svc-sub-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.svc-sub-col { background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 1.75rem; transition: all 0.4s var(--ease); }
.svc-sub-col:hover { border-color: var(--accent-dim); transform: translateY(-2px); }
.svc-sub-col h4 { font-family: var(--f-mono); font-size: 0.72rem; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1.25rem; display: flex; align-items: center; gap: 0.5rem; transition: color 0.5s ease; }
.svc-sub-col h4 .en { color: var(--muted-2); font-weight: 400; transition: color 0.5s ease; }
.svc-list li {
  font-size: 0.88rem; color: var(--ink-2); padding: 0.5rem 0 0.5rem 1.1rem;
  position: relative; line-height: 1.5; transition: color 0.5s ease;
}
.svc-list li::before { content: '—'; position: absolute; left: 0; color: var(--muted-2); transition: color 0.5s ease; }
.svc-list li .note { color: var(--muted); font-size: 0.8em; }
.svc-block--case { margin-top: 2rem; padding: 1.25rem 1.5rem; border: 1px dashed var(--border); border-radius: 8px; display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; transition: border-color 0.5s ease; }
.svc-block--case .label { font-family: var(--f-mono); font-size: 0.68rem; color: var(--muted-2); letter-spacing: 0.1em; text-transform: uppercase; transition: color 0.5s ease; }
.svc-block--case .case-link { font-family: var(--f-display); font-weight: 700; font-size: 1rem; color: var(--accent); transition: color 0.3s; }
.svc-block--case .case-link:hover { text-decoration: underline; }
.ai-chip {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-family: var(--f-mono); font-size: 0.62rem; font-weight: 600;
  color: var(--accent); background: var(--accent-dim);
  padding: 0.18rem 0.55rem; border-radius: 3px; letter-spacing: 0.06em;
  text-transform: uppercase; vertical-align: middle;
  transition: all 0.5s ease;
}

/* 服务流程 */
.process-flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: border-color 0.5s ease, background 0.5s ease; }
.process-step { background: var(--bg-2); padding: 2rem 1.5rem; position: relative; transition: all 0.35s var(--ease); }
.process-step:hover { background: var(--bg-3); }
.process-step:hover .process-num { color: var(--accent); }
.process-num { font-family: var(--f-mono); font-size: 0.68rem; color: var(--muted-2); margin-bottom: 1rem; transition: color 0.3s; }
.process-name { font-family: var(--f-display); font-weight: 700; font-size: 1.3rem; margin-bottom: 0.5rem; color: var(--ink); transition: color 0.5s ease; }
.process-desc { font-size: 0.8rem; color: var(--muted); line-height: 1.6; transition: color 0.5s ease; }

/* ── WORKS（首页大卡 + 案例库网格）────────── */
.works-list { display: flex; flex-direction: column; gap: 2rem; }
.work-card { display: grid; grid-template-columns: 1.1fr 1fr; gap: 3rem; align-items: center; padding: 2rem; border: 1px solid var(--border); border-radius: 12px; background: var(--bg-2); transition: all 0.35s var(--ease); cursor: pointer; }
.work-card:hover { border-color: var(--accent-dim); background: var(--bg-3); transform: translateY(-2px); }
.work-card:nth-child(even) { direction: rtl; }
.work-card:nth-child(even) > * { direction: ltr; }
.work-img {
  /* v1.0：与案例 KV 共用同一张 16:9 图（card.jpg），容器比例对齐避免裁切 */
  aspect-ratio: 16/9; border-radius: 8px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--bg-3), var(--bg-4)); border: 1px solid var(--border-2);
  display: flex; align-items: center; justify-content: center; transition: all 0.4s var(--ease);
}
.work-card:hover .work-img { border-color: var(--accent-dim); }
.work-img::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, var(--accent-dim), transparent 70%); opacity: 0.4; }
.work-img-label { font-family: var(--f-mono); font-size: 0.7rem; color: var(--muted-2); letter-spacing: 0.1em; text-transform: uppercase; text-align: center; position: relative; z-index: 1; transition: color 0.5s ease; }
.work-img-label .ph-icon { display: block; width: 32px; height: 32px; margin: 0 auto 0.6rem; border: 1px solid var(--border); border-radius: 4px; position: relative; transition: border-color 0.5s ease; }
.work-img-label .ph-icon::before { content: ''; position: absolute; top: 6px; left: 50%; transform: translateX(-50%); width: 10px; height: 7px; border-radius: 50%; background: var(--border); transition: background 0.5s ease; }
.work-img-label .ph-icon::after { content: ''; position: absolute; bottom: 5px; left: 5px; right: 5px; height: 10px; background: linear-gradient(to top, var(--border), transparent); border-radius: 2px; transition: background 0.5s ease; }
.work-brand { font-family: var(--f-display); font-weight: 900; font-size: 0.85rem; color: var(--accent); letter-spacing: 0.1em; margin-bottom: 0.5rem; transition: color 0.5s ease; }
.work-title { font-family: var(--f-display); font-weight: 700; font-size: 1.65rem; line-height: 1.15; margin-bottom: 0.75rem; color: var(--ink); transition: color 0.5s ease; }
.work-desc { font-size: 0.88rem; color: var(--muted); line-height: 1.65; margin-bottom: 1.25rem; transition: color 0.5s ease; }
.work-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.5rem; }
.work-tag { font-family: var(--f-mono); font-size: 0.65rem; padding: 0.2rem 0.6rem; background: var(--bg-4); color: var(--muted); border-radius: 3px; transition: all 0.5s ease; }
.work-tag--accent { background: var(--accent-dim); color: var(--accent); transition: all 0.5s ease; }
.work-link { font-size: 0.85rem; color: var(--ink); display: inline-flex; align-items: center; gap: 0.4rem; transition: color 0.25s; }
.work-link:hover { color: var(--accent); }
.work-link .arrow { transition: transform 0.25s; }
.work-link:hover .arrow { transform: translateX(3px); }

/* 案例库：筛选栏 */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center;
  margin-bottom: 1.25rem;
}
.filter-group-label {
  font-family: var(--f-mono); font-size: 0.65rem; color: var(--muted-2);
  letter-spacing: 0.12em; text-transform: uppercase; margin-right: 0.5rem;
  min-width: 3.5em; transition: color 0.5s ease;
}
.filter-btn {
  font-family: var(--f-mono); font-size: 0.72rem; padding: 0.4rem 0.9rem;
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  border-radius: 100px; cursor: pointer;
  transition: all 0.25s var(--ease);
}
.filter-btn:hover { color: var(--ink); border-color: var(--muted); }
.filter-btn.active {
  background: var(--accent); border-color: var(--accent);
  color: var(--accent-ink); font-weight: 600;
}
.filter-count {
  font-family: var(--f-mono); font-size: 0.7rem; color: var(--muted-2);
  margin-left: auto; letter-spacing: 0.08em;
  transition: color 0.5s ease;
}

/* 案例库：网格卡片 */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 2.5rem; }
.case-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  overflow: hidden; cursor: pointer; display: flex; flex-direction: column;
  transition: all 0.35s var(--ease);
  text-decoration: none; color: inherit;
}
.case-card:hover { border-color: var(--accent-dim); transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,0.2); }
.case-card.hidden { display: none; }
.case-img {
  aspect-ratio: 16/9; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--bg-3), var(--bg-4));
  border-bottom: 1px solid var(--border-2);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.4s var(--ease);
}
.case-card:hover .case-img { border-bottom-color: var(--accent-dim); }
.case-img::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 50% 60%, var(--accent-dim), transparent 70%); opacity: 0.5; }
.case-img .ph-icon { display: block; width: 36px; height: 36px; border: 1px solid var(--border); border-radius: 4px; position: relative; transition: border-color 0.5s ease; }
.case-img .ph-icon::before { content: ''; position: absolute; top: 7px; left: 50%; transform: translateX(-50%); width: 12px; height: 8px; border-radius: 50%; background: var(--border); }
.case-img .ph-icon::after { content: ''; position: absolute; bottom: 6px; left: 6px; right: 6px; height: 11px; background: linear-gradient(to top, var(--border), transparent); border-radius: 2px; }
.case-img-label { font-family: var(--f-mono); font-size: 0.62rem; color: var(--muted-2); letter-spacing: 0.1em; text-transform: uppercase; margin-top: 0.7rem; transition: color 0.5s ease; }
.case-body { padding: 1.5rem 1.5rem 1.75rem; display: flex; flex-direction: column; flex: 1; }
.case-brand { font-family: var(--f-mono); font-size: 0.68rem; color: var(--accent); letter-spacing: 0.14em; margin-bottom: 0.45rem; transition: color 0.5s ease; }
.case-name { font-family: var(--f-display); font-weight: 700; font-size: 1.3rem; line-height: 1.15; margin-bottom: 0.65rem; color: var(--ink); transition: color 0.5s ease; }
.case-desc { font-size: 0.84rem; color: var(--muted); line-height: 1.6; margin-bottom: 1rem; flex: 1; transition: color 0.5s ease; }
.case-meta { display: flex; flex-wrap: wrap; gap: 0.35rem; align-items: center; }
.case-tag { font-family: var(--f-mono); font-size: 0.6rem; padding: 0.16rem 0.5rem; background: var(--bg-4); color: var(--muted); border-radius: 3px; transition: all 0.5s ease; }
.case-stat {
  font-family: var(--f-display); font-weight: 700; font-size: 0.95rem;
  color: var(--accent); margin-left: auto; letter-spacing: 0.02em;
  transition: color 0.5s ease;
}

/* ── STATS ────────────────────────────────── */
.stats { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); transition: background 0.5s ease, border-color 0.5s ease; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.stat-item { text-align: center; padding: 1rem 0.5rem; }
.stat-num { font-family: var(--f-display); font-weight: 900; font-size: clamp(2.5rem, 5vw, 4rem); line-height: 1; color: var(--accent); margin-bottom: 0.5rem; transition: color 0.5s ease; }
.stat-num .suffix { font-size: 0.55em; color: var(--muted); transition: color 0.5s ease; }
.stat-label { font-family: var(--f-mono); font-size: 0.72rem; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; transition: color 0.5s ease; }
.stat-note { font-size: 0.7rem; color: var(--muted-2); margin-top: 0.3rem; transition: color 0.5s ease; }

/* ── AILAB ────────────────────────────────── */
.ailab { position: relative; overflow: hidden; }
.ailab::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 70% 50%, var(--accent-dim), transparent 50%), radial-gradient(ellipse at 20% 80%, var(--accent-dim), transparent 55%); pointer-events: none; transition: background 0.5s ease; }
.ailab-content { position: relative; z-index: 1; }
.ailab-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 3rem; gap: 2rem; }
.ailab-title { font-family: var(--f-display); font-weight: 900; font-size: clamp(2.5rem, 6vw, 4.5rem); line-height: 0.95; letter-spacing: -0.02em; color: var(--ink); transition: color 0.5s ease; }
.ailab-title .accent { color: var(--accent); transition: color 0.5s ease; }
.ailab-desc { max-width: 400px; font-size: 0.95rem; color: var(--muted); line-height: 1.65; transition: color 0.5s ease; }

.ailab-visual {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 2.25rem 1.75rem; margin-bottom: 2.25rem; position: relative; overflow: hidden;
  transition: background 0.5s ease, border-color 0.5s ease;
}
.ailab-visual-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.ailab-visual-item {
  aspect-ratio: 4/3; background: var(--bg-3); border-radius: 8px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.5rem; border: 1px solid var(--border-2);
  transition: all 0.3s ease;
}
.ailab-visual-item:hover { border-color: var(--accent); transform: translateY(-2px); }
.ailab-visual-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  mask-size: contain; -webkit-mask-size: contain;
  mask-repeat: no-repeat; -webkit-mask-repeat: no-repeat;
  mask-position: center; -webkit-mask-position: center;
  opacity: 0.8; transition: background 0.5s ease, opacity 0.3s ease;
}
.ailab-visual-item:hover .ailab-visual-icon { opacity: 1; }
.ailab-visual-label {
  font-family: var(--f-mono); font-size: 0.65rem; color: var(--muted);
  letter-spacing: 0.08em; text-transform: uppercase; text-align: center;
  transition: color 0.5s ease;
}
.ailab-visual-item:hover .ailab-visual-label { color: var(--accent); }

/* v1.1 四卡配图版：1:1 卡片，图片零裁切 + 标签压底（AiLab 区域仅静态 hover，无动画） */
.ailab-visual-item--media { aspect-ratio: 1/1; }
.ailab-visual-media { flex: 1; width: 100%; min-height: 0; border-radius: 6px; overflow: hidden; background: var(--bg-3); }
.ailab-visual-media img { width: 100%; height: 100%; object-fit: cover; display: block; }

.platform-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; margin-bottom: 2.5rem; transition: border-color 0.5s ease, background 0.5s ease; }
.platform-card { background: var(--bg-2); padding: 1.75rem; transition: all 0.3s; cursor: pointer; position: relative; overflow: hidden; }
.platform-card::after { content: ''; position: absolute; top: 0; right: 0; width: 60px; height: 60px; background: radial-gradient(circle, var(--accent-dim), transparent); opacity: 0; transition: opacity 0.3s; }
.platform-card:hover { background: var(--bg-3); }
.platform-card:hover::after { opacity: 1; }
.platform-card:hover .platform-name { color: var(--accent); }
.platform-name { font-family: var(--f-display); font-weight: 700; font-size: 1.15rem; margin-bottom: 0.4rem; transition: color 0.3s; color: var(--ink); }
.platform-meta { font-family: var(--f-mono); font-size: 0.68rem; color: var(--muted); line-height: 1.5; transition: color 0.5s ease; }

/* AiLab 作战图（ ailab 页专用）*/
.battle-map { position: relative; }
.battle-platforms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.battle-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 1.75rem; cursor: pointer; position: relative; overflow: hidden;
  transition: all 0.35s var(--ease);
}
.battle-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease);
}
.battle-card:hover, .battle-card.expanded { border-color: var(--accent-dim); background: var(--bg-3); }
.battle-card:hover::before, .battle-card.expanded::before { transform: scaleX(1); }
.battle-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.battle-name { font-family: var(--f-display); font-weight: 900; font-size: 1.5rem; color: var(--ink); transition: color 0.5s ease; }
.battle-toggle { font-family: var(--f-mono); font-size: 0.8rem; color: var(--muted-2); transition: all 0.3s; }
.battle-card:hover .battle-toggle, .battle-card.expanded .battle-toggle { color: var(--accent); transform: rotate(90deg); }
.battle-content-form { font-family: var(--f-mono); font-size: 0.7rem; color: var(--accent); letter-spacing: 0.08em; margin-bottom: 1rem; transition: color 0.5s ease; }
.battle-detail { max-height: 0; overflow: hidden; transition: max-height 0.5s var(--ease), opacity 0.4s ease; opacity: 0; }
.battle-card.expanded .battle-detail { max-height: 320px; opacity: 1; }
.battle-rows { display: flex; flex-direction: column; gap: 0.65rem; padding-top: 0.75rem; border-top: 1px solid var(--border-2); transition: border-color 0.5s ease; }
.battle-row { display: grid; grid-template-columns: 88px 1fr; gap: 0.75rem; align-items: baseline; }
.battle-row .k { font-family: var(--f-mono); font-size: 0.62rem; color: var(--muted-2); letter-spacing: 0.1em; text-transform: uppercase; transition: color 0.5s ease; }
.battle-row .v { font-size: 0.82rem; color: var(--ink-2); line-height: 1.5; transition: color 0.5s ease; }

/* AI 理念 */
.belief-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.belief-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 2.25rem; transition: all 0.35s var(--ease);
}
.belief-card:hover { border-color: var(--accent-dim); transform: translateY(-3px); }
.belief-num { font-family: var(--f-display); font-weight: 900; font-size: 2.5rem; color: var(--accent); opacity: 0.35; margin-bottom: 1rem; transition: color 0.5s ease; }
.belief-title { font-family: var(--f-display); font-weight: 700; font-size: 1.25rem; margin-bottom: 0.6rem; color: var(--ink); transition: color 0.5s ease; }
.belief-desc { font-size: 0.87rem; color: var(--muted); line-height: 1.65; transition: color 0.5s ease; }

/* ── CLIENTS ──────────────────────────────── */
.clients-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: border-color 0.5s ease, background 0.5s ease; }
.client-cell { background: var(--bg-2); aspect-ratio: 1.6/1; display: flex; align-items: center; justify-content: center; transition: all 0.3s; position: relative; cursor: pointer; }
.client-cell::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, var(--accent-dim), transparent); opacity: 0; transition: opacity 0.3s; }
.client-cell:hover { background: var(--bg-3); }
.client-cell:hover::before { opacity: 1; }
.client-name { font-family: var(--f-display); font-weight: 700; font-size: 0.85rem; color: var(--muted); letter-spacing: 0.03em; transition: color 0.3s; position: relative; z-index: 1; }
.client-cell:hover .client-name { color: var(--ink); }

/* ── ABOUT 页组件 ─────────────────────────── */
.value-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.value-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 2.25rem; transition: all 0.35s var(--ease);
}
.value-card:hover { border-color: var(--accent-dim); transform: translateY(-3px); }
.value-num { font-family: var(--f-mono); font-size: 0.68rem; color: var(--muted-2); letter-spacing: 0.12em; margin-bottom: 1.1rem; transition: color 0.5s ease; }
.value-title { font-family: var(--f-display); font-weight: 700; font-size: 1.45rem; margin-bottom: 0.65rem; color: var(--ink); transition: color 0.5s ease; }
.value-desc { font-size: 0.9rem; color: var(--muted); line-height: 1.7; transition: color 0.5s ease; }

.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0.4rem; bottom: 0.4rem; width: 1px; background: linear-gradient(to bottom, var(--accent), var(--border)); transition: background 0.5s ease; }
.timeline-item { position: relative; padding-bottom: 2.25rem; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: ''; position: absolute; left: -2rem; top: 0.5rem;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
  transform: translateX(-4px); transition: all 0.5s ease;
}
.timeline-year { font-family: var(--f-mono); font-size: 0.72rem; color: var(--accent); letter-spacing: 0.1em; margin-bottom: 0.35rem; transition: color 0.5s ease; }
.timeline-title { font-family: var(--f-display); font-weight: 700; font-size: 1.15rem; color: var(--ink); margin-bottom: 0.3rem; transition: color 0.5s ease; }
.timeline-desc { font-size: 0.87rem; color: var(--muted); max-width: 560px; line-height: 1.6; transition: color 0.5s ease; }

/* ── JOIN / CONTACT 页组件 ────────────────── */
.reason-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.reason-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 2rem; transition: all 0.35s var(--ease);
}
.reason-card:hover { border-color: var(--accent-dim); transform: translateY(-3px); }
.reason-icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--accent-dim); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-mono); font-size: 1rem; font-weight: 600;
  margin-bottom: 1.25rem; transition: all 0.5s ease;
}
.reason-title { font-family: var(--f-display); font-weight: 700; font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--ink); transition: color 0.5s ease; }
.reason-desc { font-size: 0.85rem; color: var(--muted); line-height: 1.6; transition: color 0.5s ease; }

.job-list { display: flex; flex-direction: column; gap: 1rem; }
.job-item {
  display: grid; grid-template-columns: auto 1fr auto auto; gap: 1.5rem; align-items: center;
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.5rem 1.75rem; transition: all 0.35s var(--ease);
}
.job-item:hover { border-color: var(--accent-dim); transform: translateX(4px); }
.job-dept { font-family: var(--f-mono); font-size: 0.65rem; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; transition: color 0.5s ease; }
.job-title { font-family: var(--f-display); font-weight: 700; font-size: 1.2rem; color: var(--ink); transition: color 0.5s ease; }
.job-meta { font-family: var(--f-mono); font-size: 0.72rem; color: var(--muted); transition: color 0.5s ease; }

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.contact-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 2.5rem 2rem; text-align: center; transition: all 0.35s var(--ease);
}
.contact-card:hover { border-color: var(--accent-dim); transform: translateY(-3px); }
.contact-icon {
  width: 48px; height: 48px; margin: 0 auto 1.5rem; border-radius: 12px;
  background: var(--accent-dim); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.5s ease;
}
.contact-icon svg { width: 22px; height: 22px; }
.contact-title { font-family: var(--f-display); font-weight: 700; font-size: 1.3rem; margin-bottom: 0.5rem; color: var(--ink); transition: color 0.5s ease; }
.contact-desc { font-size: 0.85rem; color: var(--muted); line-height: 1.65; transition: color 0.5s ease; }

/* ── CTA ──────────────────────────────────── */
.cta { text-align: center; padding: calc(var(--section-py) * 1.3) 0; position: relative; overflow: hidden; }
.cta::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 50%, var(--accent-dim), transparent 60%); pointer-events: none; transition: background 0.5s ease; }
.cta-content { position: relative; z-index: 1; }
.cta-title { font-family: var(--f-display); font-weight: 900; font-size: clamp(2.5rem, 7vw, 5rem); line-height: 0.95; letter-spacing: -0.02em; margin-bottom: 1.5rem; color: var(--ink); transition: color 0.5s ease; }
.cta-title .accent { color: var(--accent); transition: color 0.5s ease; }
.cta-sub { font-size: 1.1rem; color: var(--muted); margin-bottom: 2.5rem; transition: color 0.5s ease; }
.cta-btn { display: inline-flex; align-items: center; gap: 0.6rem; padding: 1.1rem 2.5rem; background: var(--accent); color: var(--accent-ink); font-weight: 600; font-size: 0.95rem; border-radius: 6px; transition: all 0.3s var(--ease), background 0.5s ease, color 0.5s ease; }
.cta-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 32px var(--accent-dim); }

/* ── FOOTER ───────────────────────────────── */
.footer { background: var(--bg-2); border-top: 1px solid var(--border); padding: 4rem 0 2rem; transition: background 0.5s ease, border-color 0.5s ease; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; } /* v1.1 三栏：社交媒体栏全站收口（原 2fr 1fr 1fr 1fr） */
.footer-brand .logo { margin-bottom: 1.25rem; }
.footer-desc { font-size: 0.85rem; color: var(--muted); line-height: 1.65; max-width: 320px; transition: color 0.5s ease; }
.footer-col h4 { font-family: var(--f-mono); font-size: 0.68rem; color: var(--accent); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 1rem; transition: color 0.5s ease; }
.footer-col ul li { margin-bottom: 0.6rem; font-size: 0.85rem; color: var(--muted); line-height: 1.55; } /* v1.1 页脚文本统一：纯文本 li 原先继承正文大字号偏凸显 */
.footer-col a { font-size: 0.85rem; color: var(--muted); transition: color 0.25s; }
.footer-col a:hover { color: var(--ink); }
.footer-col .tbd { font-family: var(--f-mono); font-size: 0.75rem; color: var(--muted-2); transition: color 0.5s ease; }
.footer-col .f-label { display: block; font-family: var(--f-mono); font-size: 0.62rem; color: var(--muted-2); letter-spacing: 0.12em; text-transform: uppercase; line-height: 1.2; margin-bottom: 0.1rem; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 2rem; border-top:  1px solid var(--border); font-size: 0.75rem; color: var(--muted-2); font-family: var(--f-mono); transition: border-color 0.5s ease, color 0.5s ease; }

/* ── DESIGN NOTES（开发迭代记录）──────────── */
.design-notes { background: var(--bg-2); border-top: 1px solid var(--border); padding: 3rem 0; transition: background 0.5s ease, border-color 0.5s ease; }
.design-notes-grid { display: grid; grid-template-columns: 200px 1fr; gap: 2rem; max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }
.notes-label { font-family: var(--f-mono); font-size: 0.68rem; color: var(--accent); letter-spacing: 0.12em; text-transform: uppercase; transition: color 0.5s ease; }
.notes-content { font-size: 0.82rem; color: var(--muted); line-height: 1.8; transition: color 0.5s ease; }
.notes-content strong { color: var(--ink-2); transition: color 0.5s ease; }
.notes-content .change { display: block; margin-bottom: 0.5rem; }
.notes-content .tag-mini { display: inline-block; padding: 0.05rem 0.35rem; border-radius: 2px; font-size: 0.65rem; font-family: var(--f-mono); margin-right: 0.4rem; }
.notes-content .tag-fix { background: rgba(255,107,107,0.15); color: #ff6b6b; }
.notes-content .tag-new { background: rgba(96,217,55,0.15); color: var(--accent); }
.notes-content .tag-upd { background: rgba(36,165,134,0.15); color: var(--accent-2); }
.notes-content a { color: var(--accent); text-decoration: underline; transition: color 0.5s ease; }

/* ── PLACEHOLDER ──────────────────────────── */
.ph-badge { display: inline-flex; align-items: center; gap: 0.3rem; padding: 0.1rem 0.45rem; background: rgba(255,107,107,0.1); color: #ff6b6b; border-radius: 3px; font-family: var(--f-mono); font-size: 0.6rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; vertical-align: middle; }

/* ── SCROLL ANIMATIONS ────────────────────── */
[data-animate] { opacity: 0; transform: translateY(30px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
[data-animate].in-view { opacity: 1; transform: translateY(0); }
[data-animate-delay="1"] { transition-delay: 0.1s; }
[data-animate-delay="2"] { transition-delay: 0.2s; }
[data-animate-delay="3"] { transition-delay: 0.3s; }
[data-animate-delay="4"] { transition-delay: 0.4s; }

/* ── RESPONSIVE ───────────────────────────── */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .platform-grid, .battle-platforms { grid-template-columns: repeat(2, 1fr); }
  .clients-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-shield { display: none; }
  .design-notes-grid { grid-template-columns: 1fr; }
  .theme-switcher { display: none; }
  .ailab-visual-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .svc-block-head { grid-template-columns: 1fr; gap: 1.5rem; }
  .svc-sub-grid { grid-template-columns: 1fr 1fr; }
  .process-flow { grid-template-columns: repeat(3, 1fr); }
  .reason-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .belief-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  :root { --section-py: 4.5rem; --gutter: 1.25rem; }
  .nav-links { display: none; }
  .nav-burger { display: flex; }
  .services-grid { grid-template-columns: 1fr; }
  .work-card { grid-template-columns: 1fr; gap: 1.5rem; }
  .work-card:nth-child(even) { direction: ltr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
  .platform-grid, .battle-platforms { grid-template-columns: 1fr; }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  .ailab-header { flex-direction: column; align-items: flex-start; }
  .hero-cta { flex-direction: column; }
  .ailab-visual-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: 1fr; }
  .svc-sub-grid { grid-template-columns: 1fr; }
  .process-flow { grid-template-columns: 1fr 1fr; }
  .reason-grid { grid-template-columns: 1fr; }
  .job-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .filter-count { display: none; }
  .page-hero { padding: 6rem 0 2.25rem; min-height: 0; }
  .page-hero--case { padding: 5.5rem 0 1.25rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── CASE DETAIL（案例详情页 · work.html）──── */
.case-hero-meta {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.5rem;
  padding: 1.4rem 0; margin-top: 2.75rem;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  transition: border-color 0.5s ease;
}
.case-hero-meta .k {
  font-family: var(--f-mono); font-size: 0.6rem; color: var(--muted-2);
  letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 0.35rem;
  transition: color 0.5s ease;
}
.case-hero-meta .v { font-size: 0.85rem; color: var(--ink-2); line-height: 1.4; transition: color 0.5s ease; }

.case-kv {
  /* v1.0：锁定 16:9，宽度随首屏剩余高度自适应（约 430px 留给导航+hero），保证第一屏相对完整可见 */
  width: min(100%, calc((100vh - 430px) * 16 / 9));
  aspect-ratio: 16/9; border-radius: 12px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--bg-3), var(--bg-4));
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  margin: 1.5rem auto 0; transition: border-color 0.5s ease, background 0.5s ease;
}
.case-kv::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 55%, var(--accent-dim), transparent 65%);
  opacity: 0.5;
}
.case-kv-label {
  font-family: var(--f-mono); font-size: 0.7rem; color: var(--muted-2);
  letter-spacing: 0.1em; text-transform: uppercase; text-align: center;
  position: relative; z-index: 1; transition: color 0.5s ease;
}
.case-kv-label .ph-icon { display: block; width: 44px; height: 44px; margin: 0 auto 0.7rem; border: 1px solid var(--border); border-radius: 6px; position: relative; transition: border-color 0.5s ease; }
.case-kv-label .ph-icon::before { content: ''; position: absolute; top: 9px; left: 50%; transform: translateX(-50%); width: 14px; height: 9px; border-radius: 50%; background: var(--border); }
.case-kv-label .ph-icon::after { content: ''; position: absolute; bottom: 7px; left: 7px; right: 7px; height: 13px; background: linear-gradient(to top, var(--border), transparent); border-radius: 3px; }

/* ── KV 轮播（v1.0：探测 card.jpg（与卡片共用）+ kv-2~8.jpg，1 张无控件，多张箭头+圆点+计数）── */
.case-kv.has-img::before, .case-kv.has-img .case-kv-label { display: none; }
.kv-carousel { position: absolute; inset: 0; }
.kv-track { display: flex; height: 100%; transition: transform 0.55s var(--ease); }
.kv-slide { flex: 0 0 100%; position: relative; }
.kv-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.kv-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  z-index: 3; width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--nav-bg);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  color: var(--ink); font-size: 1.05rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s var(--ease);
}
.kv-prev { left: 1rem; }
.kv-next { right: 1rem; }
.kv-arrow:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
@media (hover: hover) {
  .kv-arrow { opacity: 0; }
  .case-kv:hover .kv-arrow, .case-kv:focus-within .kv-arrow { opacity: 1; }
}
.kv-dots { position: absolute; bottom: 0.9rem; left: 50%; transform: translateX(-50%); display: flex; gap: 0.45rem; z-index: 3; }
.kv-dots span {
  width: 7px; height: 7px; border-radius: 50%; background: var(--muted-2);
  opacity: 0.55; cursor: pointer; transition: all 0.3s;
}
.kv-dots span.active { background: var(--accent); opacity: 1; transform: scale(1.2); }
.kv-count {
  position: absolute; top: 0.9rem; right: 1rem; z-index: 3;
  font-family: var(--f-mono); font-size: 0.65rem; color: var(--ink);
  background: var(--nav-bg); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 0.2rem 0.55rem; border-radius: 3px; letter-spacing: 0.08em;
  border: 1px solid var(--border);
}

/* ── 案例卡片真实图（card.jpg 探测命中后替换占位符）── */
.case-img.has-img::before, .case-img.has-img .case-img-inner { display: none; }
.work-img.has-img::before, .work-img.has-img .work-img-label { display: none; }
.case-img .real-img, .work-img .real-img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: 1; transition: transform 0.5s var(--ease);
}
.case-card:hover .case-img .real-img { transform: scale(1.03); }
.work-card:hover .work-img .real-img { transform: scale(1.03); }

.case-stat-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border); border-radius: 12px;
  overflow: hidden; margin-top: 1rem;
  transition: border-color 0.5s ease, background 0.5s ease;
}
.case-stat { background: var(--bg-2); padding: 1.05rem 1.25rem; text-align: center; transition: background 0.5s ease; }
.case-stat:hover { background: var(--bg-3); }
.case-stat .num {
  font-family: var(--f-display); font-weight: 900; color: var(--ink);
  font-size: clamp(1.25rem, 2.2vw, 1.8rem); line-height: 1.05; margin-bottom: 0.25rem;
  letter-spacing: -0.01em; transition: color 0.5s ease;
}
.case-stat .label {
  font-family: var(--f-mono); font-size: 0.66rem; color: var(--muted);
  letter-spacing: 0.1em; text-transform: uppercase; transition: color 0.5s ease;
}

.detail-grid { display: grid; grid-template-columns: 300px 1fr; gap: 4rem; align-items: start; }
.detail-aside { position: sticky; top: 6.5rem; }
.detail-sec-num {
  font-family: var(--f-mono); font-size: 0.7rem; color: var(--accent);
  letter-spacing: 0.16em; margin-bottom: 0.9rem; display: flex; align-items: center; gap: 0.6rem;
  transition: color 0.5s ease;
}
.detail-sec-num::after { content: ''; flex: 1; height: 1px; background: var(--border); transition: background 0.5s ease; }
.detail-sec-title {
  font-family: var(--f-display); font-weight: 900; color: var(--ink);
  font-size: clamp(1.9rem, 3vw, 2.7rem); line-height: 0.95; margin-bottom: 0.6rem;
  letter-spacing: -0.01em; transition: color 0.5s ease;
}
.detail-sec-en {
  font-family: var(--f-mono); font-size: 0.62rem; color: var(--muted-2);
  letter-spacing: 0.18em; text-transform: uppercase; transition: color 0.5s ease;
}
.detail-para {
  font-size: 1.02rem; color: var(--ink-2); line-height: 1.85;
  max-width: 680px; margin-bottom: 1.25rem; transition: color 0.5s ease;
}
.detail-para strong { color: var(--ink); font-weight: 600; }
.detail-insight {
  border-left: 2px solid var(--accent); background: var(--bg-2);
  padding: 1.35rem 1.6rem; border-radius: 0 10px 10px 0; margin: 2rem 0;
  max-width: 680px; transition: background 0.5s ease, border-color 0.5s ease;
}
.detail-insight .q {
  font-family: var(--f-display); font-weight: 700; font-size: 1.25rem;
  line-height: 1.35; color: var(--ink); margin-bottom: 0.4rem; transition: color 0.5s ease;
}
.detail-insight .a { font-size: 0.85rem; color: var(--muted); line-height: 1.6; transition: color 0.5s ease; }

.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.result-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 2rem 1.75rem; transition: all 0.35s var(--ease);
}
.result-card:hover { border-color: var(--accent-dim); transform: translateY(-3px); }
.result-card .mark {
  font-family: var(--f-display); font-weight: 900; font-size: 1.6rem;
  color: var(--accent); opacity: 0.85; margin-bottom: 1rem; line-height: 1;
  transition: color 0.5s ease;
}
.result-card .mark.tbd { color: var(--muted-2); opacity: 1; font-size: 1.3rem; }
.result-card h4 { font-family: var(--f-display); font-weight: 700; font-size: 1.15rem; color: var(--ink); margin-bottom: 0.5rem; transition: color 0.5s ease; }
.result-card p { font-size: 0.85rem; color: var(--muted); line-height: 1.6; transition: color 0.5s ease; }

.ai-note-card {
  border: 1px dashed var(--border); border-radius: 12px; padding: 2.25rem;
  display: flex; align-items: center; gap: 2rem; flex-wrap: wrap;
  transition: border-color 0.5s ease;
}
.ai-note-card .txt { flex: 1; min-width: 260px; }
.ai-note-card .txt h4 {
  font-family: var(--f-display); font-weight: 700; font-size: 1.2rem;
  color: var(--ink); margin-bottom: 0.5rem; transition: color 0.5s ease;
}
.ai-note-card .txt p { font-size: 0.88rem; color: var(--muted); line-height: 1.65; max-width: 560px; transition: color 0.5s ease; }

.case-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); border-top: 1px solid var(--border); transition: background 0.5s ease, border-color 0.5s ease; }
.case-pn-link {
  background: var(--bg-2); padding: 2.5rem 2.75rem; min-height: 132px;
  display: flex; flex-direction: column; justify-content: center; gap: 0.45rem;
  transition: background 0.35s var(--ease); position: relative; overflow: hidden;
}
.case-pn-link::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  transform: scaleY(0); transform-origin: top; transition: transform 0.4s var(--ease);
}
.case-pn-link.next { text-align: right; align-items: flex-end; }
.case-pn-link.next::before { left: auto; right: 0; transform-origin: bottom; }
.case-pn-link:hover { background: var(--bg-3); }
.case-pn-link:hover::before { transform: scaleY(1); }
.case-pn-label { font-family: var(--f-mono); font-size: 0.65rem; color: var(--muted-2); letter-spacing: 0.14em; text-transform: uppercase; transition: color 0.5s ease; }
.case-pn-brand {
  font-family: var(--f-display); font-weight: 900; font-size: clamp(1.5rem, 3vw, 2.2rem);
  color: var(--ink); line-height: 1; transition: color 0.3s;
}
.case-pn-link:hover .case-pn-brand { color: var(--accent); }
.case-pn-title { font-size: 0.85rem; color: var(--muted); transition: color 0.5s ease; }

.pending-state { padding: 5rem 2rem; text-align: center; }
.pending-state .code {
  font-family: var(--f-display); font-weight: 900; font-size: clamp(2.5rem, 6vw, 4.5rem);
  color: var(--muted-2); line-height: 1; margin-bottom: 1rem;
  letter-spacing: -0.02em; transition: color 0.5s ease;
}
.pending-state p { color: var(--muted); font-size: 0.95rem; margin-bottom: 2rem; }

@media (max-width: 1024px) {
  .detail-grid { grid-template-columns: 1fr; gap: 2rem; }
  .detail-aside { position: static; }
  .detail-sec-num::after { flex: 0 0 48px; }
  .case-hero-meta { grid-template-columns: repeat(3, 1fr); }
  .result-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .case-hero-meta { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
  .case-kv { width: 100%; }
  .kv-arrow { width: 38px; height: 38px; font-size: 0.95rem; }
  .kv-count { top: 0.75rem; right: 0.75rem; }
  .case-stat-bar { grid-template-columns: repeat(2, 1fr); }
  .result-grid { grid-template-columns: 1fr; }
  .case-pn { grid-template-columns: 1fr; }
  .case-pn-link { padding: 2rem 1.5rem; }
  .case-pn-link.next { text-align: left; align-items: flex-start; }
}

/* ── v1.3 AIGC 影片橱窗（AiLab 页 #showcase）· 横竖分区 + 组内等高 + 文字外置 ── */
#capabilities, #showcase { scroll-margin-top: 90px; }
.aigc-rows { display: flex; flex-direction: column; gap: 2.6rem; }
.aigc-row-head { display: flex; align-items: center; gap: 0.65rem; margin-bottom: 1.05rem; }
.aigc-row-chip { font-family: var(--f-mono); font-size: 0.62rem; letter-spacing: 0.08em; padding: 2px 8px; border: 1px solid var(--border); border-radius: 4px; color: var(--ink-2); }
.aigc-row-name { font-family: var(--f-display); font-weight: 700; font-size: 0.98rem; letter-spacing: 0.02em; }
.aigc-row-line { flex: 1; height: 1px; background: var(--border); }
.aigc-row-en { font-family: var(--f-mono); font-size: 0.6rem; letter-spacing: 0.16em; color: var(--muted-2); }
.aigc-row-grid { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 16px 14px; }
/* 横屏区 4 列 × 等高 170px；竖屏区 9 条一行 × 等高 210px（宽高比锁死原生比例，零裁切） */
.aigc-row-grid--L { --aw: 302px; --ah: 170px; }
.aigc-row-grid--P { --aw: 118px; --ah: 210px; }
.aigc-card { width: var(--aw); margin: 0; cursor: pointer; outline: none; position: relative; }
.aigc-card:focus-visible .aigc-cover { box-shadow: 0 0 0 2px var(--accent); }
.aigc-cover { position: relative; height: var(--ah); border-radius: 8px; overflow: hidden; background: var(--bg-4); box-shadow: 0 1px 3px rgba(0,0,0,0.07); transition: transform 0.35s ease, box-shadow 0.35s ease; }
.aigc-card:hover .aigc-cover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,0.16); }
.aigc-cover img, .aigc-cover video { display: block; width: 100%; height: 100%; object-fit: cover; }
.aigc-play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: linear-gradient(180deg, rgba(0,0,0,0) 30%, rgba(0,0,0,0.42)); opacity: 0; transition: opacity 0.3s ease; }
.aigc-card:hover .aigc-play, .aigc-card:focus-visible .aigc-play { opacity: 1; }
.aigc-play-btn { width: 46px; height: 46px; border-radius: 50%; background: rgba(255,255,255,0.94); display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 18px rgba(0,0,0,0.3); }
.aigc-play-btn::after { content: ''; border-left: 15px solid #101014; border-top: 9px solid transparent; border-bottom: 9px solid transparent; margin-left: 4px; }
.aigc-dur { position: absolute; right: 8px; bottom: 8px; font-family: var(--f-mono); font-size: 0.62rem; color: #fff; background: rgba(0,0,0,0.62); padding: 2px 7px; border-radius: 4px; letter-spacing: 0.06em; }
/* 文字外置：画面下方两行（标题 + 副行），截断处配 title 悬浮完整内容 */
.aigc-meta { margin-top: 0.55rem; min-width: 0; }
.aigc-meta-title { font-family: var(--f-display); font-weight: 600; font-size: 0.8rem; line-height: 1.35; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color 0.25s ease; }
.aigc-card:hover .aigc-meta-title { color: var(--accent); }
.aigc-meta-sub { margin-top: 2px; font-size: 0.67rem; color: var(--muted); line-height: 1.45; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 1080px) {
  .aigc-row-grid--L { --aw: 284px; --ah: 160px; }
  .aigc-row-grid--P { --aw: 106px; --ah: 188px; }
}
@media (max-width: 620px) {
  .aigc-rows { gap: 2rem; }
  .aigc-row-grid { gap: 14px 12px; }
  /* 横屏 2 列、竖屏 3 列，宽高比锁定原生比例 */
  .aigc-row-grid--L .aigc-card { width: calc(50% - 6px); }
  .aigc-row-grid--L .aigc-cover { height: auto; aspect-ratio: 16 / 9; }
  .aigc-row-grid--P .aigc-card { width: calc(33.333% - 8px); }
  .aigc-row-grid--P .aigc-cover { height: auto; aspect-ratio: 9 / 16; }
  .aigc-meta { margin-top: 0.4rem; }
  .aigc-meta-title { font-size: 0.72rem; }
  .aigc-meta-sub { font-size: 0.62rem; }
}
.ailab-visual-label em { font-style: normal; font-size: 0.72em; opacity: 0.8; margin-left: 0.45em; }

/* ── v1.2 影片灯箱播放器 ───────────────────────────────────────────── */
.v-lightbox { position: fixed; inset: 0; z-index: 10005; display: none; align-items: center; justify-content: center; padding: 4.5rem 1.5rem 2rem; }
.v-lightbox.open { display: flex; }
.v-lightbox-backdrop { position: absolute; inset: 0; background: rgba(5,7,6,0.9); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.v-lightbox-body { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; max-width: 1240px; width: 100%; }
.v-lightbox-close { position: absolute; top: -3.4rem; right: 0; width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.25); background: rgba(255,255,255,0.08); color: #fff; font-size: 1.35rem; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background 0.25s ease; }
.v-lightbox-close:hover { background: rgba(255,255,255,0.22); }
.v-lightbox video { display: block; max-width: 100%; max-height: 70vh; width: auto; height: auto; border-radius: 10px; background: #000; box-shadow: 0 18px 60px rgba(0,0,0,0.55); }
.v-lightbox-meta { margin-top: 1.1rem; max-width: 780px; text-align: center; }
.v-lightbox-title { font-family: var(--f-display); font-weight: 700; font-size: 1.15rem; color: #fff; margin: 0 0 0.4rem; }
.v-lightbox-desc { font-size: 0.88rem; color: rgba(255,255,255,0.72); line-height: 1.65; margin: 0 0 0.75rem; }
.v-lightbox-meta .work-tag { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.75); }
.v-lightbox-meta .work-tags { justify-content: center; margin-bottom: 0; }
@media (max-width: 620px) { .v-lightbox { padding: 3.6rem 0.9rem 1.2rem; } .v-lightbox-close { top: -3rem; } }