/* ═══════════════════════════
   设计令牌
═══════════════════════════ */
:root{
  --ink:     #09090B;
  --ink2:    #3F3F46;
  --ink3:    #71717A;
  --ink4:    #A1A1AA;
  --surface: #FFFFFF;
  --tint:    #FAFAFA;
  --tint2:   #F4F4F5;
  --line:    #E4E4E7;
  --line2:   #D4D4D8;
  --indigo:  #4F46E5;   /* 主强调色 */
  --indigo2: #6366F1;
  --indigo3: #EEF2FF;
  --indigo4: #C7D2FE;
  --emerald: #10B981;
  --amber:   #F59E0B;
  --rose:    #F43F5E;
  --r:       12px;
  --r-lg:    20px;
  --sh:      0 1px 2px rgba(0,0,0,.06),0 4px 16px rgba(0,0,0,.06);
  --sh-lg:   0 2px 4px rgba(0,0,0,.04),0 8px 40px rgba(0,0,0,.1);
  --font-d:  'Bricolage Grotesque',sans-serif;
  --font-b:  'DM Sans',sans-serif;
  --font-m:  'Geist Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-b);background:var(--surface);color:var(--ink);overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
h1,h2,h3,h4,h5{font-family:var(--font-d);letter-spacing:-.02em;line-height:1.1}
.container{max-width:1160px;margin:0 auto;padding:0 40px}

/* ═══════════════════════════
   Reveal 动画
═══════════════════════════ */
.r0{opacity:0;transform:translateY(20px);transition:opacity .55s ease,transform .55s ease}
.r0.on{opacity:1;transform:none}
[data-d="1"]{transition-delay:.08s}[data-d="2"]{transition-delay:.16s}
[data-d="3"]{transition-delay:.24s}[data-d="4"]{transition-delay:.32s}
[data-d="5"]{transition-delay:.40s}[data-d="6"]{transition-delay:.48s}

/* ═══════════════════════════
   通用按钮
═══════════════════════════ */
.btn{display:inline-flex;align-items:center;gap:7px;border-radius:8px;font-weight:600;font-size:.9rem;cursor:pointer;transition:all .18s;white-space:nowrap}
.btn-primary{background:var(--indigo);color:#fff;padding:11px 22px;box-shadow:0 1px 2px rgba(79,70,229,.3),0 4px 12px rgba(79,70,229,.2)}
.btn-primary:hover{background:#4338CA;box-shadow:0 2px 4px rgba(79,70,229,.3),0 8px 20px rgba(79,70,229,.25);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--ink2);padding:10px 20px;border:1.5px solid var(--line2)}
.btn-outline:hover{border-color:var(--indigo);color:var(--indigo);background:var(--indigo3)}
.btn-ghost{background:transparent;color:var(--ink3);padding:10px 18px;font-weight:500}
.btn-ghost:hover{color:var(--ink);background:var(--tint2)}

/* ═══════════════════════════
   导航
═══════════════════════════ */
nav{
  position:fixed;top:0;left:0;right:0;z-index:200;
  height:60px;display:flex;align-items:center;
  background:rgba(255,255,255,.85);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.logo{display:flex;align-items:center;gap:9px;font-family:var(--font-d);font-weight:700;font-size:1rem;color:var(--ink);letter-spacing:-.02em}
.logo-mark{
  width:30px;height:30px;border-radius:8px;
  background:var(--indigo);
  display:grid;place-items:center;
  font-size:.82rem;font-weight:800;color:#fff;
}
.nav-links{display:flex;gap:4px;list-style:none}
.nav-links a{font-size:.88rem;font-weight:500;color:var(--ink3);padding:7px 14px;border-radius:7px;transition:color .15s,background .15s}
.nav-links a:hover{color:var(--ink);background:var(--tint2)}
.nav-right{display:flex;align-items:center;gap:8px}
.nav-badge{font-size:.72rem;font-weight:600;background:var(--indigo3);color:var(--indigo);padding:3px 8px;border-radius:50px;margin-left:4px}

/* ═══════════════════════════
   英雄区
═══════════════════════════ */
#hero{
  padding:120px 0 0;
  background:var(--surface);
  overflow:hidden;
}
/* 细腻网格背景 */
#hero::before{
  content:'';position:absolute;inset:0;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.5;pointer-events:none;
}
/* 中心光晕 */
#hero::after{
  content:'';position:absolute;
  width:700px;height:400px;
  background:radial-gradient(ellipse,rgba(79,70,229,.08) 0%,transparent 70%);
  top:80px;left:50%;transform:translateX(-50%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:1;text-align:center}
.hero-pill{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1.5px solid var(--line2);
  border-radius:50px;padding:6px 16px 6px 8px;
  font-size:.78rem;font-weight:600;color:var(--ink2);
  margin-bottom:28px;box-shadow:var(--sh);
  transition:border-color .2s;cursor:default;
}
.hero-pill:hover{border-color:var(--indigo4)}
.hero-pill-chip{
  background:var(--indigo);color:#fff;
  font-size:.68rem;font-weight:700;letter-spacing:.04em;
  padding:3px 9px;border-radius:50px;text-transform:uppercase;
}
.hero-h1{
  font-size:clamp(2.8rem,6vw,5rem);
  font-weight:800;
  color:var(--ink);
  margin-bottom:22px;
  line-height:1.05;
  max-width:780px;margin-left:auto;margin-right:auto;
}
/* 渐变强调文字 */
.hero-h1 .hl{
  background:linear-gradient(135deg,var(--indigo) 20%,#818CF8 80%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero-sub{
  font-size:1.1rem;color:var(--ink3);line-height:1.75;
  max-width:520px;margin:0 auto 36px;font-weight:400;
}
.hero-ctas{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.hero-note{font-size:.78rem;color:var(--ink4);margin-bottom:64px}
.hero-note span{margin:0 6px}

/* ── 产品截图容器 ── */
.product-frame{
  position:relative;
  max-width:980px;margin:0 auto;
  border-radius:var(--r-lg) var(--r-lg) 0 0;
  border:1.5px solid var(--line);
  border-bottom:none;
  box-shadow:
    0 0 0 1px rgba(0,0,0,.04),
    0 4px 8px rgba(0,0,0,.04),
    0 16px 48px rgba(0,0,0,.08),
    0 40px 80px rgba(0,0,0,.06);
  overflow:hidden;
  background:var(--surface);
}
/* 浏览器假地址栏 */
.frame-bar{
  height:44px;background:#F8F8FA;
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:8px;
  padding:0 16px;
}
.fb-dot{width:12px;height:12px;border-radius:50%}
.fb-url{
  flex:1;max-width:320px;margin:0 auto;
  background:#fff;border:1px solid var(--line);
  border-radius:6px;height:26px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-m);font-size:.72rem;color:var(--ink4);gap:6px;
}
/* 产品 UI 主体（纯 CSS 绘制的仪表盘） */
.product-ui{
  display:grid;
  grid-template-columns:220px 1fr;
  height:460px;
}
/* 侧边栏 */
.ui-sidebar{
  background:#FAFAFA;
  border-right:1px solid var(--line);
  padding:16px 12px;
  display:flex;flex-direction:column;gap:4px;
}
.ui-sidebar-header{
  display:flex;align-items:center;gap:8px;
  padding:8px 10px;margin-bottom:8px;
}
.ui-logo-sm{width:24px;height:24px;border-radius:6px;background:var(--indigo);display:grid;place-items:center}
.ui-logo-sm span{font-size:.62rem;font-weight:800;color:#fff}
.ui-sidebar-header h4{font-family:var(--font-d);font-size:.82rem;font-weight:700;color:var(--ink)}
.ui-nav-item{
  display:flex;align-items:center;gap:9px;
  padding:7px 10px;border-radius:7px;
  font-size:.78rem;font-weight:500;color:var(--ink3);
  transition:background .12s,color .12s;cursor:default;
}
.ui-nav-item.active{background:var(--indigo3);color:var(--indigo);font-weight:600}
.ui-nav-item .ui-icon{font-size:.85rem;width:18px;text-align:center}
.ui-nav-dot{width:6px;height:6px;border-radius:50%;background:var(--emerald);margin-left:auto}
.ui-section-label{font-size:.65rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink4);padding:12px 10px 4px}
/* 主内容 */
.ui-main{
  background:var(--surface);
  padding:24px 28px;
  overflow:hidden;
  display:flex;flex-direction:column;gap:20px;
}
.ui-topbar{
  display:flex;align-items:center;justify-content:space-between;
}
.ui-topbar h3{font-family:var(--font-d);font-size:1rem;font-weight:700;color:var(--ink)}
.ui-topbar-actions{display:flex;gap:8px}
.ui-btn-sm{
  font-size:.72rem;font-weight:600;padding:5px 12px;border-radius:6px;
  border:1px solid var(--line);color:var(--ink3);background:var(--surface);
  display:flex;align-items:center;gap:5px;
}
.ui-btn-primary{background:var(--indigo);color:#fff;border-color:transparent}
/* 统计卡 */
.ui-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.ui-stat{
  background:var(--tint);border:1px solid var(--line);
  border-radius:10px;padding:14px 16px;
}
.ui-stat-label{font-size:.68rem;font-weight:500;color:var(--ink4);margin-bottom:6px;text-transform:uppercase;letter-spacing:.06em}
.ui-stat-val{font-family:var(--font-d);font-size:1.5rem;font-weight:800;color:var(--ink);line-height:1}
.ui-stat-delta{font-size:.7rem;color:var(--emerald);font-weight:600;margin-top:4px;display:flex;align-items:center;gap:3px}
.ui-stat-delta.down{color:var(--rose)}
/* 图表区 */
.ui-chart-row{display:grid;grid-template-columns:1.6fr 1fr;gap:12px}
.ui-chart-card{background:var(--tint);border:1px solid var(--line);border-radius:10px;padding:16px}
.ui-chart-title{font-size:.75rem;font-weight:600;color:var(--ink2);margin-bottom:14px}
/* 简单条形图 */
.bar-chart{display:flex;align-items:flex-end;gap:6px;height:80px}
.bar{
  flex:1;border-radius:4px 4px 0 0;
  background:var(--indigo4);
  transition:height .3s;
}
.bar.hi{background:var(--indigo)}
/* 任务列表 */
.ui-task-list{display:flex;flex-direction:column;gap:6px}
.ui-task{
  display:flex;align-items:center;gap:10px;
  padding:8px 10px;border-radius:7px;background:var(--surface);
  border:1px solid var(--line);
}
.task-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.task-dot.green{background:var(--emerald)}
.task-dot.amber{background:var(--amber)}
.task-dot.blue{background:var(--indigo2)}
.ui-task span{font-size:.73rem;color:var(--ink2);flex:1}
.ui-task-badge{font-size:.65rem;font-weight:600;padding:2px 8px;border-radius:50px}
.badge-green{background:#D1FAE5;color:#065F46}
.badge-amber{background:#FEF3C7;color:#92400E}
.badge-blue{background:var(--indigo3);color:var(--indigo)}
/* 渐变遮罩让截图自然融入 */
.frame-fade{
  position:absolute;bottom:0;left:0;right:0;height:100px;
  background:linear-gradient(to bottom,transparent,var(--surface));
  pointer-events:none;
}

/* ═══════════════════════════
   信任横幅
═══════════════════════════ */
#trust{
  padding:40px 0;
  border-bottom:1px solid var(--line);
}
.trust-inner{
  display:flex;align-items:center;gap:0;justify-content:center;
  flex-wrap:wrap;
}
.trust-label{font-size:.78rem;color:var(--ink4);font-weight:500;padding-right:32px;margin-right:32px;border-right:1px solid var(--line);white-space:nowrap}
.trust-logos{display:flex;align-items:center;gap:32px;flex-wrap:wrap;justify-content:center}
.trust-logo{font-size:.88rem;font-weight:700;color:var(--ink4);font-family:var(--font-d);letter-spacing:-.01em;transition:color .2s;cursor:default}
.trust-logo:hover{color:var(--ink2)}

/* ═══════════════════════════
   功能特性
═══════════════════════════ */
#features{padding:100px 0;background:var(--surface)}
.features-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;
  margin-top:56px;
}
.feat{
  background:var(--surface);
  padding:36px 32px;
  transition:background .2s;
}
.feat:hover{background:#FAFAFF}
.feat-icon{
  width:48px;height:48px;border-radius:12px;
  display:grid;place-items:center;font-size:1.3rem;
  margin-bottom:20px;border:1px solid var(--line);
  background:var(--tint);
}
.feat h3{font-size:1.05rem;font-weight:700;color:var(--ink);margin-bottom:10px}
.feat p{font-size:.88rem;color:var(--ink3);line-height:1.72}
.feat-tag{
  display:inline-flex;align-items:center;gap:5px;
  margin-top:16px;font-size:.74rem;font-weight:600;
  color:var(--indigo);
}
.feat-tag::after{content:'→';transition:margin .15s}
.feat:hover .feat-tag::after{margin-left:4px}

/* ═══════════════════════════
   全宽产品展示
═══════════════════════════ */
#showcase{
  padding:80px 0;
  background:linear-gradient(to bottom,var(--surface),var(--tint));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.showcase-inner{
  display:grid;grid-template-columns:1fr 1.4fr;
  gap:72px;align-items:center;
}
.showcase-text .eyebrow{
  font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--indigo);margin-bottom:14px;display:block;
}
.showcase-text h2{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:800;color:var(--ink);margin-bottom:16px}
.showcase-text p{font-size:.95rem;color:var(--ink3);line-height:1.78;margin-bottom:24px}
.showcase-list{list-style:none;display:flex;flex-direction:column;gap:12px;margin-bottom:32px}
.showcase-list li{
  display:flex;align-items:flex-start;gap:12px;
  font-size:.9rem;color:var(--ink2);line-height:1.6;
}
.sl-check{
  width:20px;height:20px;flex-shrink:0;
  border-radius:50%;background:var(--indigo3);
  display:grid;place-items:center;font-size:.65rem;color:var(--indigo);margin-top:2px;
}
/* 终端风格代码卡 */
.code-card{
  background:var(--ink);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-lg);
}
.code-card-bar{
  background:#1E1E2E;padding:12px 16px;
  display:flex;align-items:center;gap:7px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.cc-dot{width:11px;height:11px;border-radius:50%}
.code-card-bar span{margin-left:auto;font-family:var(--font-m);font-size:.7rem;color:rgba(255,255,255,.3)}
.code-body{
  padding:24px;
  font-family:var(--font-m);font-size:.8rem;line-height:1.9;
  color:rgba(255,255,255,.65);
}
.c-cm{color:#636E8A}.c-kw{color:#7DD3FC}.c-fn{color:#86EFAC}
.c-st{color:#FCA5A5}.c-nm{color:#FCD34D}.c-ok{color:#4ADE80}
.c-cursor{display:inline-block;width:7px;height:13px;background:#6366F1;animation:blink 1.1s step-end infinite;vertical-align:middle}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}

/* ═══════════════════════════
   服务项目
═══════════════════════════ */
#services{padding:100px 0;background:var(--surface)}
.services-head{text-align:center;margin-bottom:56px}
.services-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.svc{
  border:1.5px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px 28px;
  transition:border-color .2s,box-shadow .2s,transform .2s;
  background:var(--surface);
  position:relative;overflow:hidden;
}
.svc::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(79,70,229,.03),transparent);
  opacity:0;transition:opacity .25s;
}
.svc:hover{border-color:var(--indigo4);box-shadow:var(--sh-lg);transform:translateY(-3px)}
.svc:hover::after{opacity:1}
.svc-icon{
  width:44px;height:44px;border-radius:11px;
  background:var(--tint2);border:1px solid var(--line);
  display:grid;place-items:center;font-size:1.2rem;
  margin-bottom:20px;
}
.svc h3{font-size:1rem;font-weight:700;color:var(--ink);margin-bottom:10px}
.svc p{font-size:.86rem;color:var(--ink3);line-height:1.7}
.svc-badge{
  display:inline-flex;align-items:center;gap:4px;
  margin-top:16px;font-size:.74rem;font-weight:600;
  background:var(--indigo3);color:var(--indigo);
  padding:4px 12px;border-radius:50px;
}

/* ═══════════════════════════
   定价
═══════════════════════════ */
#pricing{
  padding:100px 0;
  background:var(--tint);
  border-top:1px solid var(--line);
}
.pricing-head{text-align:center;margin-bottom:56px}
.pricing-toggle{
  display:inline-flex;background:var(--surface);border:1px solid var(--line);
  border-radius:50px;padding:4px;gap:2px;margin-top:20px;
}
.ptab{
  padding:8px 20px;border-radius:50px;font-size:.84rem;font-weight:600;
  cursor:pointer;transition:all .18s;color:var(--ink3);
}
.ptab.active{background:var(--indigo);color:#fff;box-shadow:0 1px 3px rgba(79,70,229,.4)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.plan{
  background:var(--surface);
  border:1.5px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  transition:border-color .2s,box-shadow .2s;
  position:relative;
}
.plan-popular{
  border-color:var(--indigo);
  box-shadow:0 0 0 1px var(--indigo4),0 8px 32px rgba(79,70,229,.12);
}
.plan-popular-badge{
  position:absolute;top:-1px;left:50%;transform:translateX(-50%);
  background:var(--indigo);color:#fff;
  font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  padding:5px 16px;border-radius:0 0 8px 8px;
}
.plan-name{font-size:.82rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink3);margin-bottom:12px}
.plan-price{
  font-family:var(--font-d);font-size:3rem;font-weight:800;
  color:var(--ink);line-height:1;margin-bottom:6px;
  display:flex;align-items:flex-start;gap:2px;
}
.plan-price sup{font-size:1.2rem;font-weight:600;margin-top:10px}
.plan-price sub{font-size:.95rem;font-weight:400;color:var(--ink4);align-self:flex-end;margin-bottom:6px}
.plan-desc{font-size:.84rem;color:var(--ink3);margin-bottom:24px;line-height:1.65}
.plan-divider{height:1px;background:var(--line);margin:24px 0}
.plan-features{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:28px}
.plan-features li{
  display:flex;align-items:center;gap:10px;
  font-size:.86rem;color:var(--ink2);
}
.pf-check{
  width:18px;height:18px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;font-size:.6rem;
  background:var(--indigo3);color:var(--indigo);
}
.plan-popular .pf-check{background:var(--indigo);color:#fff}
.plan-cta{width:100%;padding:12px;border-radius:9px;font-size:.9rem;font-weight:600;border:none;cursor:pointer;transition:all .18s}
.plan-cta-outline{background:var(--surface);color:var(--ink);border:1.5px solid var(--line2)}
.plan-cta-outline:hover{border-color:var(--indigo);color:var(--indigo);background:var(--indigo3)}
.plan-cta-primary{background:var(--indigo);color:#fff;border:none;box-shadow:0 2px 8px rgba(79,70,229,.3)}
.plan-cta-primary:hover{background:#4338CA;transform:translateY(-1px)}

/* 企业套餐横条 */
.plan-enterprise{
  margin-top:16px;
  background:var(--ink);border-radius:var(--r-lg);
  padding:28px 36px;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:20px;
}
.pe-text h4{font-size:1.05rem;font-weight:700;color:#fff;margin-bottom:4px}
.pe-text p{font-size:.86rem;color:rgba(255,255,255,.5)}
.pe-features{display:flex;gap:24px;flex-wrap:wrap}
.pe-feat{font-size:.82rem;color:rgba(255,255,255,.7);display:flex;align-items:center;gap:7px}
.pe-feat::before{content:'✓';color:#4ADE80;font-weight:700}
.btn-enterprise{background:#fff;color:var(--ink);padding:11px 24px;border-radius:8px;font-weight:700;font-size:.88rem;white-space:nowrap;transition:background .15s}
.btn-enterprise:hover{background:var(--tint2)}

/* ═══════════════════════════
   客户评价
═══════════════════════════ */
#testimonials{padding:100px 0;background:var(--surface)}
.testi-head{text-align:center;margin-bottom:56px}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.testi{
  border:1.5px solid var(--line);border-radius:var(--r-lg);
  padding:32px;background:var(--surface);
  transition:border-color .2s,box-shadow .2s;
}
.testi:hover{border-color:var(--indigo4);box-shadow:var(--sh)}
.testi-stars{color:var(--amber);font-size:.88rem;margin-bottom:14px;letter-spacing:2px}
.testi p{font-size:.92rem;color:var(--ink2);line-height:1.78;margin-bottom:24px}
.testi-author{display:flex;align-items:center;gap:12px}
.tav{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  font-weight:700;font-size:.88rem;color:#fff;
  flex-shrink:0;
}
.testi-author h5{font-size:.88rem;font-weight:600;color:var(--ink)}
.testi-author span{font-size:.78rem;color:var(--ink4)}

/* ═══════════════════════════
   合作伙伴
═══════════════════════════ */
#partners{
  padding:56px 0;overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--tint);
}
.partners-label{text-align:center;font-size:.75rem;color:var(--ink4);font-weight:500;letter-spacing:.08em;text-transform:uppercase;margin-bottom:32px}
.marquee-wrap{overflow:hidden}
.marquee-inner{display:flex;width:max-content;animation:marq 22s linear infinite}
@keyframes marq{to{transform:translateX(-50%)}}
.mp{
  display:flex;align-items:center;gap:8px;
  padding:10px 32px;
  font-size:.9rem;font-weight:700;font-family:var(--font-d);
  color:var(--ink4);white-space:nowrap;letter-spacing:-.01em;
  transition:color .2s;
}
.mp:hover{color:var(--ink2)}
.mp-sep{color:var(--line2)}

/* ═══════════════════════════
   新闻
═══════════════════════════ */
#news{padding:100px 0;background:var(--surface)}
.news-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:48px;flex-wrap:wrap;gap:16px}
.news-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:20px}
.nc{
  border:1.5px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;
  transition:border-color .2s,box-shadow .2s,transform .2s;
  background:var(--surface);
}
.nc:hover{border-color:var(--indigo4);box-shadow:var(--sh);transform:translateY(-2px)}
.nc-thumb{height:160px;display:grid;place-items:center;font-size:2.5rem;position:relative;overflow:hidden}
.nc:first-child .nc-thumb{height:200px}
.nth{position:absolute;inset:0}
.nt1{background:linear-gradient(135deg,#EEF2FF,#E0E7FF)}
.nt2{background:linear-gradient(135deg,#F0FDF4,#DCFCE7)}
.nt3{background:linear-gradient(135deg,#FFF7ED,#FFEDD5)}
.nc-body{padding:22px}
.nc-tag{font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--indigo);margin-bottom:9px;display:block}
.nc h3{font-size:.96rem;font-weight:700;color:var(--ink);line-height:1.45;margin-bottom:9px}
.nc p{font-size:.83rem;color:var(--ink3);line-height:1.65}
.nc-meta{font-size:.74rem;color:var(--ink4);margin-top:12px}
.nc-link{display:inline-flex;align-items:center;gap:5px;font-size:.81rem;font-weight:600;color:var(--indigo);margin-top:10px;transition:gap .15s}
.nc-link:hover{gap:9px}

/* ═══════════════════════════
   关于我们
═══════════════════════════ */
#about{
  padding:100px 0;
  background:linear-gradient(to bottom,var(--tint),var(--surface));
  border-top:1px solid var(--line);
}
.about-inner{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.about-stats-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px;
}
.astat{
  background:var(--surface);border:1.5px solid var(--line);border-radius:var(--r);
  padding:24px;text-align:center;
  transition:border-color .2s;
}
.astat:hover{border-color:var(--indigo4)}
.astat .num{
  font-family:var(--font-d);font-size:2.4rem;font-weight:800;
  color:var(--ink);line-height:1;margin-bottom:6px;
}
.astat .num em{font-style:normal;color:var(--indigo)}
.astat .lbl{font-size:.78rem;color:var(--ink4);font-weight:500}
.about-img-card{
  background:var(--ink);border-radius:var(--r-lg);
  padding:28px;
}
.aic-head{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.aic-icon{width:36px;height:36px;border-radius:9px;background:rgba(99,102,241,.2);border:1px solid rgba(99,102,241,.3);display:grid;place-items:center;font-size:1rem}
.aic-head h5{font-size:.9rem;font-weight:700;color:#fff}
.aic-head p{font-size:.75rem;color:rgba(255,255,255,.4)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tg{
  padding:6px 14px;border-radius:50px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);
  font-size:.75rem;font-weight:600;color:rgba(255,255,255,.65);
  transition:all .15s;cursor:default;
}
.tg:hover{background:rgba(99,102,241,.2);border-color:rgba(99,102,241,.4);color:#fff}
.about-text .eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--indigo);display:block;margin-bottom:12px}
.about-text h2{font-size:clamp(1.9rem,3vw,2.6rem);font-weight:800;color:var(--ink);margin-bottom:16px}
.about-text p{font-size:.93rem;color:var(--ink3);line-height:1.78;margin-bottom:16px}
.about-checklist{list-style:none;display:flex;flex-direction:column;gap:12px;margin:24px 0}
.about-checklist li{
  display:flex;align-items:flex-start;gap:12px;
  font-size:.9rem;color:var(--ink2);line-height:1.6;
}
.ac-dot{
  width:22px;height:22px;flex-shrink:0;border-radius:50%;
  background:var(--indigo3);color:var(--indigo);
  display:grid;place-items:center;font-size:.65rem;font-weight:700;margin-top:1px;
}

/* ═══════════════════════════
   CTA
═══════════════════════════ */
#cta{
  padding:100px 0;
  background:var(--ink);
  text-align:center;
  position:relative;overflow:hidden;
}
#cta::before{
  content:'';position:absolute;
  width:800px;height:400px;top:50%;left:50%;
  transform:translate(-50%,-50%);
  background:radial-gradient(ellipse,rgba(79,70,229,.35) 0%,transparent 65%);
  pointer-events:none;
}
#cta .container{position:relative;z-index:1}
#cta h2{font-size:clamp(2.2rem,5vw,4rem);font-weight:800;color:#fff;margin-bottom:20px;letter-spacing:-.03em}
#cta h2 span{color:var(--indigo2)}
#cta p{font-size:1.05rem;color:rgba(255,255,255,.5);margin-bottom:40px;line-height:1.75;max-width:500px;margin-left:auto;margin-right:auto}
.cta-btns{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.btn-white{background:#fff;color:var(--ink);padding:13px 28px;border-radius:8px;font-weight:700;font-size:.95rem;transition:all .18s}
.btn-white:hover{background:var(--tint2);transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,.2)}
.btn-dark-outline{background:transparent;border:1.5px solid rgba(255,255,255,.15);color:rgba(255,255,255,.7);padding:13px 28px;border-radius:8px;font-weight:500;font-size:.95rem;transition:all .18s}
.btn-dark-outline:hover{border-color:rgba(255,255,255,.35);color:#fff}

/* ═══════════════════════════
   页脚
═══════════════════════════ */
footer{
  background:var(--ink);
  border-top:1px solid rgba(255,255,255,.07);
  padding:64px 0 36px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:52px}
.footer-brand .logo{color:#fff}
.footer-brand .logo .logo-mark{background:rgba(99,102,241,.8)}
.footer-brand p{font-size:.84rem;color:rgba(255,255,255,.4);margin-top:14px;line-height:1.8;max-width:260px}
.footer-col h5{font-family:var(--font-d);font-size:.84rem;font-weight:700;color:rgba(255,255,255,.9);margin-bottom:18px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:.83rem;color:rgba(255,255,255,.4);transition:color .15s}
.footer-col a:hover{color:rgba(255,255,255,.85)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.07);
  padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;
  font-size:.78rem;color:rgba(255,255,255,.3);flex-wrap:wrap;gap:12px;
}
.socials{display:flex;gap:8px}
.soc{
  width:34px;height:34px;border-radius:7px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.08);
  display:grid;place-items:center;font-size:.82rem;color:rgba(255,255,255,.4);
  transition:all .15s;
}
.soc:hover{background:rgba(99,102,241,.2);border-color:rgba(99,102,241,.4);color:rgba(255,255,255,.8)}

/* 回顶 */
#topbtn{position:fixed;bottom:32px;right:32px;width:44px;height:44px;border-radius:50%;background: #ffc26991;color: #000000;font-size:18px;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:999;opacity:0;transform:scale(.5);transition:.3s;box-shadow:0 8px 24px rgba(0,0,0,.4)}
#topbtn.show{opacity:1;transform:scale(1)}
#topbtn:hover{transform:scale(1.1);box-shadow:0 12px 32px rgba(255,72,0,.55)}

/* ═══════════════════════════
   响应式
═══════════════════════════ */
@media(max-width:1024px){
  .product-ui{grid-template-columns:180px 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .news-grid .nc:first-child{grid-column:span 2}
  .about-inner{grid-template-columns:1fr;gap:48px}
}
@media(max-width:768px){
  nav .container{padding:0 20px}
  .container{padding:0 20px}
  .nav-links{display:none}
  section{padding:72px 0!important}
  .hero-h1{font-size:2.4rem}
  .features-grid,.pricing-grid,.testi-grid,.services-grid{grid-template-columns:1fr}
  .features-grid{background:none;border:none;gap:16px}
  .feat{border:1.5px solid var(--line);border-radius:var(--r-lg)}
  .showcase-inner{grid-template-columns:1fr;gap:40px}
  .about-stats-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .ui-sidebar{display:none}
  .product-ui{grid-template-columns:1fr}
  .product-frame{border-radius:var(--r-lg) var(--r-lg) 0 0}
}