/* ==========================================================
   合肥盛辰电子科技有限公司 — 官网样式
   主题：「深空 · 电光」—— 深色科技感
   - 深空黑底（非纯黑），全局网格 + 多色光晕营造层次
   - 电光青 + 靛紫渐变作强调，玻璃质感卡片
   - 不使用绿色，不使用白底蓝的传统企业站配色
   ========================================================== */

/* ==========================================================
   字体体系（参考微盟等国内头部 SaaS 官网的字体分层结构）
   · 中文：苹方 / 微软雅黑 系统栈（零加载，与微盟一致）
   · 英文正文 + 正文数字：Inter（专业无衬线，数字为等宽 tabular）
   · 强调数字 / 编号：Space Grotesk（几何科技感，替代微盟自研 Wemonum 的开源方案）
   两款均为 SIL Open Font License 1.1，商用与自托管均无版权风险。
   自托管于 fonts/ 目录，不依赖 Google Fonts（国内访问不稳定）。
   ========================================================== */

@font-face{
  font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;
  src:url('fonts/inter-400.woff2') format('woff2');
}
@font-face{
  font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;
  src:url('fonts/inter-500.woff2') format('woff2');
}
@font-face{
  font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;
  src:url('fonts/inter-600.woff2') format('woff2');
}
@font-face{
  font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;
  src:url('fonts/inter-700.woff2') format('woff2');
}
@font-face{
  font-family:'Space Grotesk';font-style:normal;font-weight:500;font-display:swap;
  src:url('fonts/spacegrotesk-500.woff2') format('woff2');
}
@font-face{
  font-family:'Space Grotesk';font-style:normal;font-weight:700;font-display:swap;
  src:url('fonts/spacegrotesk-700.woff2') format('woff2');
}

:root{
  /* —— 底色 —— */
  --bg:      #06070B;   /* 深空黑（主底） */
  --bg-2:    #090B11;   /* 交替区块 */
  --panel:   rgba(255,255,255,.030);  /* 玻璃卡片底 */
  --panel-2: rgba(255,255,255,.048);

  /* —— 文字 —— */
  --ink:     #EEF2F9;   /* 主文字：近白 */
  --ink-2:   #A3AEC4;   /* 次级文字：冷灰 */
  --muted:   #6A7488;   /* 弱化 */

  /* —— 线条 —— */
  --line:    rgba(255,255,255,.075);
  --line-2:  rgba(255,255,255,.15);

  /* —— 强调色：电光青 + 靛紫 —— */
  --accent:   #22D3EE;
  --accent-2: #818CF8;
  --accent-3: #38BDF8;
  --grad: linear-gradient(100deg,#22D3EE 0%,#818CF8 55%,#38BDF8 100%);

  /* —— 排版 —— */
  /* 正文：英文数字走 Inter，中文自动回退苹方/雅黑（Inter 不含中文字形） */
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI",
          "PingFang SC", "PingFangSC-Regular", "Hiragino Sans GB",
          "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  /* 数字 / 编号 / 字母标签专用：几何科技感，与深色主题呼应 */
  --num:  'Space Grotesk', 'Inter', -apple-system, "PingFang SC",
          "Microsoft YaHei", sans-serif;

  /* —— UI 质感底图（AI 生成：深空黑底 + 青/靛紫光，无文字无水印）——
     这些图几乎全黑，只有光。配 mix-blend-mode:screen 使用时：
     黑色区域 = 完全不变（screen 的恒等色是黑），亮区 = 叠加发光。
     所以不用担心压暗页面，可放心大面积铺。                       */
  --tex-btn:   url("images/ui-btn-glow.webp");    /* 按钮底图：横向光带 */
  --tex-panel: url("images/ui-panel-glass.webp"); /* 窗口框底图：磨砂玻璃 + 边缘光 */
  --tex-grid:  url("images/ui-tex-grid.webp");    /* 窗口框内纹理：细网格 + 光晕 */
  --tex-flow:  url("images/ui-tex-flow.webp");    /* 流光纹理：斜向柔光 */

  --pad-section: 124px;
  --maxw: 1180px;
}

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

html{scroll-behavior:smooth}

body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 40px;position:relative;z-index:2}
a{color:inherit;text-decoration:none}
::selection{background:rgba(34,211,238,.28);color:#fff}

/* ==========================================================
   全局背景层：网格 + 光晕 + 噪点
   ========================================================== */
.bg-layer{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}

.bg-grid{
  position:absolute;inset:-10%;
  background-image:
    linear-gradient(rgba(255,255,255,.030) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.030) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 88%);
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 88%);
}

.bg-glow{position:absolute;border-radius:50%;filter:blur(30px)}
.bg-glow-a{
  top:-260px;left:-160px;width:820px;height:820px;
  background:radial-gradient(circle, rgba(34,211,238,.17), transparent 66%);
}
.bg-glow-b{
  top:-140px;right:-200px;width:760px;height:760px;
  background:radial-gradient(circle, rgba(129,140,248,.15), transparent 66%);
}
.bg-glow-c{
  bottom:-380px;left:24%;width:900px;height:900px;
  background:radial-gradient(circle, rgba(56,189,248,.075), transparent 68%);
}

/* 细微噪点，消除大面积深色的"死板感" */
.bg-noise{
  position:absolute;inset:0;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ==========================================================
   通用区块
   ========================================================== */
.section{padding:var(--pad-section) 0;position:relative}

.sec-head{max-width:760px;margin-bottom:68px}
.sec-index{
  display:block;font-family:var(--num);font-weight:500;
  font-size:12px;letter-spacing:.24em;color:var(--accent);
  margin-bottom:20px;text-transform:uppercase;
  font-variant-numeric:tabular-nums;
}
.sec-head h2{
  font-size:clamp(28px,4vw,42px);font-weight:600;
  letter-spacing:-.015em;line-height:1.3;margin-bottom:16px;
}
.sec-sub{color:var(--ink-2);font-size:17px;line-height:1.85}

/* 渐变文字 */
.grad{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

/* ==========================================================
   导航
   ========================================================== */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(6,7,11,.70);
  backdrop-filter:blur(20px) saturate(170%);
  -webkit-backdrop-filter:blur(20px) saturate(170%);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}

.brand{display:flex;align-items:center;gap:14px}
/* 品牌标识：AI 生成的六边形节点图（logo-mark），替代原来的「盛」字方块 */
.brand-logo{
  width:28px;height:28px;flex:none;border-radius:7px;
  object-fit:contain;filter:drop-shadow(0 2px 10px rgba(34,211,238,.35));
}
/* 保留 .brand-mark 样式作为回退（如果 img 加载失败） */
.brand-mark{
  width:28px;height:28px;flex:none;display:grid;place-items:center;
  background:var(--grad);color:#04141A;
  font-size:15px;font-weight:700;border-radius:7px;
  box-shadow:0 4px 18px rgba(34,211,238,.30);
}
.brand-text{font-size:16px;font-weight:600;letter-spacing:.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--muted);font-weight:400}

.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-size:15px;color:var(--ink-2);transition:color .22s ease}
.nav-links a:hover{color:var(--accent)}
.nav-cta{
  border:1px solid var(--line-2);padding:9px 20px;border-radius:8px;
  transition:background .25s ease,color .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.nav-cta:hover{
  background:rgba(34,211,238,.12);color:var(--accent);
  border-color:rgba(34,211,238,.45);
  box-shadow:0 0 22px rgba(34,211,238,.16);
}

/* ==========================================================
   首屏
   ========================================================== */
.hero{position:relative;padding:0;overflow:hidden}

/* 首屏右侧：节点网络图形（呼应"一个平台连多个小程序"） */
.hero-visual{
  position:absolute;top:50%;right:-90px;transform:translateY(-52%);
  width:640px;height:640px;z-index:1;pointer-events:none;
  -webkit-mask-image:radial-gradient(circle at 50% 50%, #000 42%, transparent 76%);
  mask-image:radial-gradient(circle at 50% 50%, #000 42%, transparent 76%);
}
.node-net{width:100%;height:100%;animation:slowspin 70s linear infinite}
@keyframes slowspin{to{transform:rotate(360deg)}}
.node{animation:pulse 3.4s ease-in-out infinite}
.node:nth-child(2){animation-delay:.4s}
.node:nth-child(3){animation-delay:.8s}
.node:nth-child(4){animation-delay:1.2s}
.node:nth-child(5){animation-delay:1.6s}
.node:nth-child(6){animation-delay:2s}
@keyframes pulse{0%,100%{opacity:.45}50%{opacity:1}}
.ring{transform-origin:300px 300px;animation:breathe 7s ease-in-out infinite}
.ring:nth-of-type(2){animation-delay:1s}
.ring:nth-of-type(3){animation-delay:2s}
@keyframes breathe{0%,100%{opacity:.5;transform:scale(1)}50%{opacity:1;transform:scale(1.028)}}

/* 视觉隐藏（供 SEO 的 h1） */
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ============ 首页轮播 ============ */
.carousel{position:relative;z-index:2}

/* 首屏占满整屏（减去导航 76px），把下方内容全部推到第二屏 */
.slides{position:relative;height:calc(100vh - 76px);min-height:600px}
@supports (height:100svh){
  .slides{height:calc(100svh - 76px)}
}

.slide{
  position:absolute;inset:0;
  display:flex;align-items:center;
  opacity:0;visibility:hidden;
  transition:opacity .85s cubic-bezier(.4,0,.2,1),visibility .85s;
}
.slide.is-active{opacity:1;visibility:visible}

/* 每张幻灯片不同色调的光晕，切换时整屏氛围跟着变 */
.slide-glow{position:absolute;inset:0;pointer-events:none;transition:opacity .85s ease}
.slide[data-tone="a"] .slide-glow{background:radial-gradient(circle 640px at 18% 36%, rgba(34,211,238,.22), transparent 65%)}
.slide[data-tone="b"] .slide-glow{background:radial-gradient(circle 640px at 74% 30%, rgba(129,140,248,.22), transparent 65%)}
.slide[data-tone="c"] .slide-glow{background:radial-gradient(circle 620px at 28% 68%, rgba(56,189,248,.20), transparent 65%)}
.slide[data-tone="d"] .slide-glow{background:radial-gradient(circle 660px at 64% 62%, rgba(167,139,250,.20), transparent 65%)}

/* 左文右图 */
.slide-inner{
  position:relative;z-index:2;width:100%;
  display:grid;grid-template-columns:1.02fr .98fr;
  gap:56px;align-items:center;
}
.slide-text{max-width:580px}
.slide-figure{display:flex;justify-content:center;align-items:center}
.slide-figure svg{
  width:100%;max-width:480px;height:auto;
  filter:drop-shadow(0 24px 60px rgba(0,0,0,.5));
}
/* 已换成 AI 生成的真实配图（已抠去黑色背景 → 透明 PNG/WebP） */
.slide-figure img{
  display:block;width:100%;max-width:580px;height:auto;
  /* 不用边框/圆角/硬阴影 —— 图形直接浮在页面动态背景上 */
  filter:drop-shadow(0 24px 70px rgba(34,211,238,.15))
         drop-shadow(0 6px 20px rgba(0,0,0,.45));
}

.slide-kicker{
  display:inline-flex;align-items:center;
  font-size:12px;letter-spacing:.22em;color:var(--accent);
  padding:7px 17px;margin-bottom:26px;
  border:1px solid rgba(34,211,238,.28);border-radius:999px;
  background:rgba(34,211,238,.06);
}
.slide-title{
  font-size:clamp(34px,5.6vw,64px);
  font-weight:700;line-height:1.16;letter-spacing:-.025em;
  margin-bottom:22px;
}
.slide-desc{
  font-size:17px;line-height:1.85;color:var(--ink-2);
  max-width:520px;margin-bottom:38px;
}

.btn{
  position:relative;overflow:hidden;isolation:isolate;
  display:inline-block;padding:15px 34px;border-radius:9px;
  font-size:15px;letter-spacing:.02em;border:1px solid transparent;
  transition:transform .22s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease;
}

/* —— 主按钮：渐变之上叠一层「光带底图」，hover 时从左向右扫过 —— */
.btn-primary{
  background:var(--grad);color:#04141A;font-weight:600;
  box-shadow:0 8px 30px rgba(34,211,238,.28);
}
.btn-primary::after{
  content:'';position:absolute;inset:-2px;z-index:-1;pointer-events:none;
  background:var(--tex-btn) center/cover no-repeat;
  mix-blend-mode:screen;opacity:.38;          /* 底图几乎全黑，screen 下只加光不压暗 */
  transform:scale(1.4) translateX(-15%);
  transition:transform 1s cubic-bezier(.22,.61,.36,1),opacity .35s ease;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 40px rgba(34,211,238,.42);
}
.btn-primary:hover::after{transform:scale(1.4) translateX(15%);opacity:.68}

/* —— 幽灵按钮：底图当背景层，用 background-blend-mode 与半透明白底 screen 混合 —— */
.btn-ghost{
  border-color:var(--line-2);color:var(--ink);
  background-color:rgba(255,255,255,.03);
  background-image:var(--tex-btn);
  background-repeat:no-repeat;
  background-size:260% 100%;
  background-position:8% 50%;
  background-blend-mode:screen;
  backdrop-filter:blur(8px);
  transition:transform .22s ease,box-shadow .25s ease,border-color .25s ease,color .25s ease,
             background-position .9s cubic-bezier(.22,.61,.36,1);
}
.btn-ghost:hover{
  border-color:rgba(34,211,238,.5);color:var(--accent);
  background-position:94% 50%;                /* 光带滑到右侧 */
  box-shadow:0 10px 34px rgba(34,211,238,.16);
  transform:translateY(-2px);
}

/* 键盘聚焦时按钮也要有明确反馈 */
.btn:focus-visible,.c-arrow:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;
}

/* 切换时文字依次上浮 */
.slide .slide-kicker,
.slide .slide-title,
.slide .slide-desc,
.slide .btn{
  transform:translateY(24px);opacity:0;
  transition:transform .85s cubic-bezier(.22,.61,.36,1),opacity .85s cubic-bezier(.22,.61,.36,1);
}
.slide .slide-figure{
  transform:translateY(26px) scale(.975);opacity:0;
  transition:transform 1.05s cubic-bezier(.22,.61,.36,1),opacity 1.05s cubic-bezier(.22,.61,.36,1);
}
.slide.is-active .slide-figure{transform:none;opacity:1;transition-delay:.14s}
.slide.is-active .slide-kicker{transform:none;opacity:1;transition-delay:.12s}
.slide.is-active .slide-title {transform:none;opacity:1;transition-delay:.20s}
.slide.is-active .slide-desc  {transform:none;opacity:1;transition-delay:.30s}
.slide.is-active .btn         {transform:none;opacity:1;transition-delay:.38s}

/* 左右箭头 */
.c-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:6;
  width:48px;height:48px;display:grid;place-items:center;
  overflow:hidden;isolation:isolate;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-2);border-radius:50%;
  color:var(--ink);cursor:pointer;
  backdrop-filter:blur(10px);
  transition:background .25s ease,border-color .25s ease,color .25s ease,box-shadow .25s ease;
}
/* 箭头按钮底图：默认不可见，hover 时点亮 */
.c-arrow::before{
  content:'';position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:var(--tex-btn) center/cover no-repeat;
  mix-blend-mode:screen;opacity:0;
  transition:opacity .3s ease;
}
.c-arrow svg{width:20px;height:20px}
.c-prev{left:24px}
.c-next{right:24px}
.c-arrow:hover{
  background:rgba(34,211,238,.12);color:var(--accent);
  border-color:rgba(34,211,238,.45);
  box-shadow:0 0 24px rgba(34,211,238,.22);
}
.c-arrow:hover::before{opacity:.75}

/* 指示器：短线，激活变长并发光 */
.c-dots{
  position:absolute;left:0;right:0;bottom:54px;z-index:6;
  display:flex;justify-content:center;gap:12px;
}
.c-dots button{
  width:26px;height:3px;border:none;padding:0;cursor:pointer;
  background:rgba(255,255,255,.20);border-radius:2px;
  transition:width .35s ease,background .35s ease,box-shadow .35s ease;
}
.c-dots button:hover{background:rgba(255,255,255,.42)}
.c-dots button.is-active{
  width:54px;background:var(--accent);
  box-shadow:0 0 14px rgba(34,211,238,.78);
}

/* 自动播放进度条 */
.c-progress{
  position:absolute;left:0;right:0;bottom:0;z-index:6;height:2px;
  background:rgba(255,255,255,.06);
}
.c-progress span{
  display:block;height:100%;width:0%;
  background:var(--grad);
  box-shadow:0 0 12px rgba(34,211,238,.6);
}

/* ==========================================================
   服务定位（引言块）
   ========================================================== */
.position{padding:0 0 var(--pad-section);position:relative}
.position-box{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg, rgba(34,211,238,.075), rgba(129,140,248,.045) 55%, rgba(255,255,255,.014));
  border:1px solid var(--line-2);
  border-radius:18px;padding:60px 64px;
  backdrop-filter:blur(14px);
  box-shadow:0 20px 60px rgba(0,0,0,.42), inset 0 1px 0 rgba(255,255,255,.05);
}
.position-box::before{
  content:'';position:absolute;top:0;left:52px;right:52px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.55),transparent);
}
/* 引言框的窗口框底图 */
.position-box::after{
  content:'';position:absolute;inset:0;z-index:0;pointer-events:none;
  background:var(--tex-panel) center/cover no-repeat;
  mix-blend-mode:screen;opacity:.4;
}
.position-box > *{position:relative;z-index:1}
.quote-mark{
  position:absolute;top:16px;left:30px;z-index:2;
  font-family:var(--num);font-weight:700;font-size:80px;line-height:1;
  color:rgba(34,211,238,.16);
}
.position-text{
  position:relative;
  font-size:clamp(19px,2.6vw,28px);
  line-height:1.85;letter-spacing:.01em;font-weight:500;
}
.position-tag{
  display:inline-block;margin-top:30px;
  font-size:12px;letter-spacing:.2em;color:var(--accent);
  text-transform:uppercase;
}
.br-desktop{display:inline}

/* ==========================================================
   服务能力（编号列表）
   ========================================================== */
.service-list{border-top:1px solid var(--line)}
.service-item{
  position:relative;
  display:grid;grid-template-columns:130px 1fr;gap:40px;
  padding:46px 0 46px 32px;border-bottom:1px solid var(--line);
  transition:background .35s ease;
}
.service-item::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 .42s ease;
}
.service-item:hover{background:linear-gradient(90deg, rgba(34,211,238,.055), transparent 62%)}
.service-item:hover::before{transform:scaleY(1)}
.svc-num{
  font-family:var(--num);font-weight:700;font-size:38px;line-height:1;
  color:rgba(255,255,255,.16);transition:color .35s ease;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.service-item:hover .svc-num{color:var(--accent)}
.svc-body h3{font-size:21px;font-weight:600;margin-bottom:12px;letter-spacing:-.008em}
.svc-body p{color:var(--ink-2);font-size:16px;line-height:1.92;max-width:680px}

/* ==========================================================
   技术方案（玻璃卡片）
   ========================================================== */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.cap-card{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg, rgba(255,255,255,.048), rgba(255,255,255,.014));
  border:1px solid var(--line);border-radius:16px;
  padding:48px 44px;
  backdrop-filter:blur(12px);
  transition:transform .32s ease,border-color .32s ease,box-shadow .32s ease;
}
/* 窗口框底图：磨砂玻璃 + 边缘光，压在卡片底色之上、文字之下 */
.cap-card::before{
  content:'';position:absolute;inset:0;z-index:0;pointer-events:none;
  background:var(--tex-panel) center/cover no-repeat;
  mix-blend-mode:screen;opacity:.34;
  transition:opacity .35s ease;
}
.cap-card > *{position:relative;z-index:1}
.cap-card::after{  /* 顶部高光 */
  content:'';position:absolute;top:0;left:16%;right:16%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
  opacity:0;transition:opacity .32s ease;
}
.cap-card:hover{
  transform:translateY(-4px);
  border-color:rgba(34,211,238,.42);
  box-shadow:0 18px 50px rgba(0,0,0,.45), 0 0 40px rgba(34,211,238,.10),
             inset 0 1px 0 rgba(255,255,255,.06);
}
.cap-card:hover::before{opacity:.6}
.cap-card:hover::after{opacity:1}
.cap-kicker{
  display:inline-block;font-size:12px;letter-spacing:.2em;
  color:var(--accent);margin-bottom:18px;
}
.cap-card h3{font-size:20px;font-weight:600;margin-bottom:14px;letter-spacing:-.008em}
.cap-card p{color:var(--ink-2);font-size:15px;line-height:1.92}

/* ==========================================================
   数据条
   ========================================================== */
.stats{
  position:relative;overflow:hidden;isolation:isolate;
  padding:66px 0;
  background:linear-gradient(180deg, rgba(34,211,238,.055), rgba(129,140,248,.02) 60%, transparent);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stats::before{  /* 流光纹理 */
  content:'';position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:var(--tex-flow) center/cover no-repeat;
  mix-blend-mode:screen;opacity:.34;
}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat{display:flex;flex-direction:column;gap:12px}
.stat-num{
  font-family:var(--num);font-weight:700;font-size:clamp(34px,4.4vw,50px);
  line-height:1;letter-spacing:-.035em;
  font-variant-numeric:tabular-nums;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.stat-num i{font-style:normal}
.stat-label{font-size:14px;color:var(--muted);letter-spacing:.05em}

/* ==========================================================
   关于盛辰
   ========================================================== */
.about{
  position:relative;padding:var(--pad-section) 0;
  background:
    radial-gradient(circle 620px at 88% 34%, rgba(129,140,248,.10), transparent 66%),
    var(--bg-2);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.about-inner{display:grid;grid-template-columns:1fr 1.35fr;gap:80px}
/* 关于盛辰：配图（已抠去黑色背景 → 透明，浮在页面上） */
.about-visual{
  grid-column:2;grid-row:1 / span 3;
  display:flex;justify-content:center;align-items:start;
  /* 不用边框/圆角 —— 图形直接融入页面背景 */
  filter:drop-shadow(0 20px 50px rgba(34,211,238,.12))
         drop-shadow(0 6px 18px rgba(0,0,0,.40));
}
.about-visual img{
  width:100%;height:auto;display:block;
}
.about-left h2{
  font-size:clamp(26px,3.4vw,38px);font-weight:600;
  line-height:1.4;letter-spacing:-.015em;margin-top:4px;
}
.about-right p{color:var(--ink-2);font-size:16px;line-height:2;margin-bottom:22px;max-width:660px}
.about-right strong{color:var(--accent);font-weight:600}
.about-lead{font-size:19px !important;color:var(--ink) !important;line-height:1.9 !important}
.about-rule{
  height:1px;margin:40px 0;
  background:linear-gradient(90deg,rgba(34,211,238,.4),rgba(34,211,238,.04),transparent);
}
.about-facts{display:grid;gap:20px}
.about-facts div{display:grid;grid-template-columns:100px 1fr;gap:20px;align-items:baseline}
.about-facts dt{font-size:13px;color:var(--muted);letter-spacing:.1em}
.about-facts dd{font-size:15px;color:var(--ink)}

/* ==========================================================
   合规声明
   ========================================================== */
.compliance-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:46px 64px}
.cp-item{position:relative;padding-left:30px}
.cp-dot{
  position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 12px rgba(34,211,238,.75);
}
.cp-item h3{font-size:19px;font-weight:600;margin-bottom:12px;letter-spacing:-.008em}
.cp-item p{color:var(--ink-2);font-size:15px;line-height:1.92}

/* ==========================================================
   联系
   ========================================================== */
.contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
.contact-left h2{
  font-size:clamp(28px,3.6vw,40px);font-weight:600;
  margin:20px 0 20px;letter-spacing:-.015em;
}
.contact-lead{color:var(--ink-2);font-size:17px;line-height:1.92}
.contact-card{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.014));
  border:1px solid var(--line);border-radius:16px;padding:10px 36px;
  backdrop-filter:blur(12px);
  box-shadow:0 18px 50px rgba(0,0,0,.38);
}
.contact-card::before{  /* 窗口框底图 */
  content:'';position:absolute;inset:0;z-index:0;pointer-events:none;
  background:var(--tex-panel) center/cover no-repeat;
  mix-blend-mode:screen;opacity:.32;
}
.contact-card > *{position:relative;z-index:1}
.ct-row{
  display:grid;grid-template-columns:80px 1fr;gap:20px;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.ct-row:last-child{border-bottom:none}
.ct-label{font-size:13px;color:var(--muted);letter-spacing:.1em;padding-top:2px}
.ct-value{font-size:16px;color:var(--ink);line-height:1.75}
/* 可交互的联系信息（邮箱/电话）悬停点亮 */
a.ct-value{transition:color .2s ease}
a.ct-value:hover{color:var(--accent)}
.todo{font-style:normal;color:var(--muted);font-size:13px}

/* ==========================================================
   协议
   ========================================================== */
.legal-block{
  position:relative;overflow:hidden;isolation:isolate;
  max-width:880px;margin-bottom:64px;
  background:rgba(255,255,255,.022);
  border:1px solid var(--line);border-radius:16px;padding:44px 48px;
}
.legal-block::before{  /* 窗口框内纹理：细网格 + 光晕 */
  content:'';position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:var(--tex-grid) center/cover no-repeat;
  mix-blend-mode:screen;opacity:.26;
}
.legal-block:last-child{margin-bottom:0}
.legal-block h3{font-size:20px;font-weight:600;margin-bottom:20px;letter-spacing:-.008em}
.legal-block>p{color:var(--ink-2);font-size:15px;line-height:1.98;margin-bottom:24px}
.legal-block ol{list-style:none;counter-reset:lg}
.legal-block li{
  counter-increment:lg;position:relative;
  padding-left:46px;margin-bottom:16px;
  color:var(--ink-2);font-size:15px;line-height:1.98;
}
.legal-block li::before{
  content:counter(lg,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-family:var(--num);font-weight:500;font-size:14px;color:var(--accent);
  letter-spacing:.06em;font-variant-numeric:tabular-nums;
}
.legal-block li strong{color:var(--ink);font-weight:600}

/* ==========================================================
   页脚
   ========================================================== */
.footer{
  position:relative;border-top:1px solid var(--line);
  background:var(--bg-2);padding:66px 0 48px;
}
.footer::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:60%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),transparent);
}
.foot-top{display:flex;justify-content:space-between;align-items:flex-start;gap:40px;flex-wrap:wrap}
.foot-brand{display:flex;align-items:center;gap:14px}
.foot-brand p{font-size:16px;font-weight:600}
.foot-links{display:flex;flex-wrap:wrap;gap:28px;max-width:660px}
.foot-links a{font-size:14px;color:var(--muted);transition:color .22s ease}
.foot-links a:hover{color:var(--accent)}
.foot-rule{height:1px;background:var(--line);margin:40px 0 28px}
.foot-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.copyright,.icp{font-size:13px;color:var(--muted);letter-spacing:.03em}
/* ICP/公安备案号链接：工信部要求可点击，颜色与页脚一致、悬停点亮 */
.icp a{color:var(--muted);text-decoration:none;transition:color .2s ease}
.icp a:hover{color:var(--accent)}

/* ==========================================================
   滚动显现
   ========================================================== */
.reveal{opacity:0;transform:translateY(20px)}
.reveal.in{
  opacity:1;transform:none;
  transition:opacity .85s cubic-bezier(.22,.61,.36,1),transform .85s cubic-bezier(.22,.61,.36,1);
}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1 !important;transform:none !important}
  .node-net,.ring,.node{animation:none !important}
  html{scroll-behavior:auto}

  /* 轮播：关闭切换动效，直接显示，仍可手动切换 */
  .slide{transition:opacity .01s linear !important}
  .slide .slide-kicker,
  .slide .slide-title,
  .slide .slide-desc,
  .slide .slide-figure,
  .slide .btn{transform:none !important;opacity:1 !important;transition:none !important}
  .c-progress{display:none}
}

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width:1080px){
  :root{--pad-section:96px}
  .hero-visual{width:480px;height:480px;right:-140px;opacity:.55}
  .slides{min-height:600px}
  .slide-inner{gap:36px}
  .slide-figure svg{max-width:400px}
  .c-prev{left:14px}
  .c-next{right:14px}
  .about-inner{grid-template-columns:1fr;gap:48px}
  .about-visual{grid-column:1/-1;grid-row:auto;order:2;max-width:560px;margin:0 auto}
  .contact-inner{grid-template-columns:1fr;gap:48px}
}

@media (max-width:860px){
  .wrap{padding:0 24px}
  .nav-links{display:none}
  .hero{padding:0}
  .hero-visual{display:none}
  .slides{min-height:620px}
  .slide-inner{grid-template-columns:1fr;gap:26px;justify-items:center;text-align:center}
  .slide-text{max-width:100%}
  .slide-kicker{margin-bottom:18px}
  .slide-title{font-size:clamp(28px,7.2vw,40px);margin-bottom:16px}
  .slide-desc{font-size:15px;margin-bottom:26px}
  .slide-figure svg{max-width:210px}
  .slide-figure img{max-width:260px}
  .c-arrow{display:none}
  .c-dots{bottom:26px}
  .position-box{padding:42px 30px}
  .quote-mark{font-size:58px;top:6px;left:20px}
  .service-item{grid-template-columns:1fr;gap:14px;padding:32px 0 32px 24px}
  .cap-grid{grid-template-columns:1fr}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:38px 32px}
  .compliance-grid{grid-template-columns:1fr;gap:34px}
  .about-facts div{grid-template-columns:1fr;gap:4px}
  .ct-row{grid-template-columns:1fr;gap:6px}
  .legal-block{padding:32px 26px}
  .br-desktop{display:none}
  .foot-bottom{flex-direction:column;gap:8px}
}

@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn{text-align:center}
  .stats-inner{grid-template-columns:1fr}
}