/* ===================== 基础变量 ===================== */
:root{
  --primary:#3b82f6;
  --primary-2:#6366f1;
  --primary-3:#8b5cf6;
  --cyan:#06b6d4;

  --bg-light:#f6f8fc;
  --bg-light-2:#ffffff;
  --bg-dark:#0a0f1f;
  --bg-dark-2:#0e1530;
  --bg-card-dark:#121a35;

  --text:#0f172a;
  --text-2:#475569;
  --text-3:#94a3b8;
  --text-on-dark:#e6edf7;
  --text-on-dark-2:#a3b1cc;
  --text-on-dark-3:#7286a8;

  --border:rgba(15,23,42,0.08);
  --border-dark:rgba(255,255,255,0.08);

  --radius:14px;
  --radius-lg:20px;
  --shadow-sm:0 2px 8px rgba(15,23,42,0.04);
  --shadow:0 12px 32px rgba(15,23,42,0.06);
  --shadow-lg:0 24px 48px rgba(15,23,42,0.10);

  --gradient-blue:linear-gradient(135deg,#3b82f6 0%,#6366f1 50%,#8b5cf6 100%);
  --gradient-text:linear-gradient(90deg,#7dd3fc,#60a5fa,#a78bfa);
  --gradient-text-light:linear-gradient(90deg,#3b82f6,#6366f1,#8b5cf6);
}

/* ===================== Reset ===================== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'HYQiHei','Microsoft YaHei','PingFang SC','Noto Sans SC',sans-serif;
  color:var(--text);
  line-height:1.7;
  background:#fff;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}

.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ===================== 通用 ===================== */
.text-white{color:#fff !important}
.text-gradient{
  background:var(--gradient-text);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.section-light .text-gradient{background:var(--gradient-text-light);-webkit-background-clip:text;background-clip:text;color:transparent}

.section{padding:96px 0;position:relative}
.section-light{background:var(--bg-light)}
.section-light + .section-light{background:#fff}
.section-dark{background:linear-gradient(180deg,#0a0f1f 0%,#0e1530 100%);color:var(--text-on-dark)}
.section-dark .section-sub,
.section-dark .section-summary{color:var(--text-on-dark-2)}

.section-head{
  text-align:center;
  margin-bottom:56px;
}
.section-title{
  font-size:36px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:-0.02em;
}
.section-sub{
  margin-top:16px;
  font-size:16px;
  color:var(--text-2);
  max-width: 80%;
  margin-left:auto;
  margin-right:auto;
}
.section-summary{
  margin-top:24px;
  font-size:15px;
  color:var(--text-2);
}

/* ===================== 配图 ===================== */
.section-figure{
  margin-top:48px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:#eef2f8;
  border:1px solid var(--border);
  padding:clamp(16px,2vw,28px);
}
.section-dark .section-figure{
  background:rgba(255,255,255,0.03);
  border-color:var(--border-dark);
}
.section-figure img{
  width:100%;
  height:auto;
  display:block;
  margin:0 auto;
}
.section-figure-compact img{width:min(100%,920px)}
.section-figure-tight{padding:clamp(10px,1.2vw,18px)}
.section-figure-zoom img{transform:scale(1.06);transform-origin:center center}
.section-figure figcaption{
  text-align:center;
  padding:16px 24px;
  color:var(--text-2);
  font-size:14px;
  background:#fff;
}
.section-dark .section-figure figcaption{
  background:rgba(255,255,255,0.04);
  color:var(--text-on-dark-2);
}
.section-figure-lg{margin-top:64px}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 26px;
  border-radius:10px;
  font-weight:600;font-size:15px;
  transition:all .2s ease;
  border:1px solid transparent;
}
.btn-lg{padding:16px 36px;font-size:16px}
.btn-primary{
  background:var(--gradient-blue);color:#fff;
  box-shadow:0 8px 20px rgba(59,130,246,.25);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(59,130,246,.35)}
.btn-ghost{
  background:transparent;color:#fff;
  border-color:rgba(255,255,255,.25);
}
.section-light .btn-ghost{
  color:var(--text);border-color:var(--border);background:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.section-light .btn-ghost:hover{background:var(--bg-light);border-color:var(--primary);color:var(--primary)}

/* ===================== 顶部导航 ===================== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(10,15,31,0.6);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:all .3s ease;
}
.nav.is-scrolled{
  background:rgba(10,15,31,0.85);
  border-bottom-color:rgba(255,255,255,.1);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:32px;
}
.logo{display:flex;align-items:center;gap:12px;color:#fff;font-weight:700}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--gradient-blue);color:#fff;font-weight:900;font-size:18px;
  box-shadow:0 6px 16px rgba(59,130,246,.35);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text small{
  font-size:11px;color:var(--text-on-dark-2);
  font-weight:500;letter-spacing:.04em;
}
.logo sup{font-size:10px;font-weight:500;color:var(--text-on-dark-2)}
.nav-links{display:flex;gap:24px}
.nav-links a{
  color:var(--text-on-dark-2);font-size:14.5px;font-weight:500;
  transition:color .2s;
}
.nav-links a:hover{color:#fff}
.nav-cta{
  background:var(--gradient-blue);color:#fff;
  padding:9px 20px;border-radius:8px;
  font-size:14px;font-weight:600;transition:all .2s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(59,130,246,.35)}

/* ===================== 1. Hero ===================== */
.hero{
  position:relative;padding:160px 0 96px;
  background:linear-gradient(180deg,#0a0f1f 0%,#0e1530 60%,#101a3a 100%);
  color:var(--text-on-dark);overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 18% 20%,rgba(59,130,246,.18),transparent 40%),
    radial-gradient(circle at 82% 70%,rgba(139,92,246,.18),transparent 45%),
    linear-gradient(rgba(99,102,241,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(99,102,241,.06) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  pointer-events:none;
}
.hero-inner{
  position:relative;display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:64px;align-items:center;
}
.hero-eyebrow{
  display:inline-block;padding:8px 16px;border-radius:999px;
  background:rgba(59,130,246,.12);
  border:1px solid rgba(96,165,250,.28);
  color:#bfdbfe;font-size:13px;font-weight:600;letter-spacing:.04em;
}
.hero-eyebrow sup{font-size:9px;font-weight:500}
.hero-title{
  margin-top:24px;font-size:60px;line-height:1.15;font-weight:900;
  letter-spacing:-0.02em;color:#fff;
}
.hero-sub{
  margin-top:24px;font-size:17px;line-height:1.85;
  color:var(--text-on-dark-2);max-width:580px;
}
.hero-sub strong{color:#fff}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-tags li{
  padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  color:var(--text-on-dark);font-size:13.5px;font-weight:500;
}
.hero-actions{margin-top:36px;display:flex;gap:16px;flex-wrap:wrap}
.hero-visual{
  position:relative;border-radius:24px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.08);
  overflow:hidden;
  box-shadow:0 30px 80px rgba(0,0,0,.35);
}
.hero-visual img{
  width:124%;
  max-width:none;
  display:block;
  transform:translate(-8%,-2%);
  transform-origin:center center;
}

/* ===================== 网格 ===================== */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}

/* ===================== 2. 产品定位 ===================== */
.goal-grid{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:36px 40px;
  margin-bottom:48px;
  box-shadow:var(--shadow-sm);
}
.goal-title{
  font-size:18px;font-weight:700;color:var(--primary);
  margin-bottom:16px;letter-spacing:.02em;
}
.goal-list{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:12px 36px;
}
.goal-list li{
  position:relative;padding-left:24px;
  font-size:15px;color:var(--text-2);line-height:1.8;
}
.goal-list li::before{
  content:"";position:absolute;left:0;top:13px;
  width:8px;height:8px;border-radius:50%;
  background:var(--gradient-blue);
}
.value-card-light{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 22px;
  transition:all .25s;
  position:relative;
}
.value-card-light:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow);
  border-color:rgba(59,130,246,.25);
}
.value-num{
  font-size:14px;font-weight:700;color:var(--primary);
  letter-spacing:.1em;margin-bottom:12px;
}
.value-card-light h4{
  font-size:18px;font-weight:700;color:var(--text);
  margin-bottom:10px;
}
.value-card-light p{font-size:13.5px;color:var(--text-2);line-height:1.75}

/* ===================== 3. 痛点（深色） ===================== */
.pain-card-dark{
  background:rgba(255,255,255,.03);
  border:1px solid var(--border-dark);
  border-radius:var(--radius);
  padding:32px 28px;
  transition:all .25s;
  position:relative;overflow:hidden;
}
.pain-card-dark::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--gradient-blue);
  transform:scaleX(0);transform-origin:left;
  transition:transform .35s;
}
.pain-card-dark:hover{
  transform:translateY(-4px);
  border-color:rgba(96,165,250,.4);
  background:rgba(59,130,246,.06);
}
.pain-card-dark:hover::before{transform:scaleX(1)}
.pain-card-dark .pain-num{
  display:inline-block;font-size:14px;font-weight:700;
  color:#7dd3fc;letter-spacing:.1em;margin-bottom:14px;
}
.pain-card-dark h3{font-size:19px;font-weight:700;margin-bottom:10px;color:#fff}
.pain-card-dark p{color:var(--text-on-dark-2);font-size:14.5px;line-height:1.8}

/* ===================== 4. 场景概览 ===================== */
.overview-grid{margin-bottom:8px}
.overview-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 24px;
  transition:all .25s;
}
.overview-card:hover{
  transform:translateY(-4px);
  border-color:rgba(99,102,241,.3);
  box-shadow:var(--shadow);
}
.overview-tag{
  display:inline-block;
  padding:6px 14px;border-radius:8px;
  background:rgba(99,102,241,.1);
  color:var(--primary-2);
  font-weight:700;font-size:14px;
  margin-bottom:14px;
}
.overview-card p{color:var(--text-2);font-size:14.5px;line-height:1.75}

/* ===================== 5. 场景 Tabs ===================== */
.tabs{margin-top:8px}
.tab-nav{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:center;
  margin-bottom:36px;padding:6px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-dark);
  border-radius:14px;
  width:fit-content;margin-left:auto;margin-right:auto;
}
.tab-nav-5 .tab-btn{padding:12px 18px;font-size:14px}
.tab-btn{
  padding:12px 22px;border-radius:10px;
  font-size:14.5px;font-weight:600;
  color:var(--text-on-dark-2);transition:all .25s;
}
.tab-btn:hover{color:#fff}
.tab-btn.is-active{
  background:var(--gradient-blue);color:#fff;
  box-shadow:0 8px 22px rgba(59,130,246,.3);
}
.tab-panel{display:none;animation:fadein .35s ease}
.tab-panel.is-active{display:block}
@keyframes fadein{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.split{
  display:grid;grid-template-columns:1fr 1fr;
  gap:64px;align-items:center;
}
.split-text h3{font-size:28px;font-weight:700;margin-bottom:14px}
.section-dark .split-text h3{color:#fff}
.split-text .lead{
  font-size:17px;font-weight:600;color:#fff;margin-bottom:14px;
}
.section-light .split-text .lead{color:var(--text)}
.split-text p{color:var(--text-on-dark-2);font-size:15px;line-height:1.85}
.section-light .split-text p{color:var(--text-2)}
.sub-h{
  font-size:13px;font-weight:700;color:#7dd3fc;
  margin-top:24px;margin-bottom:12px;
  letter-spacing:.08em;text-transform:uppercase;
}
.sub-h-light{color:#7dd3fc}
.section-light .sub-h{color:var(--primary)}
.cap-list{
  display:grid;grid-template-columns:1fr 1fr;
  gap:8px 16px;margin-bottom:8px;
}
.cap-list li{
  position:relative;padding:6px 6px 6px 22px;
  font-size:14.5px;color:var(--text-on-dark);line-height:1.7;
}
.section-light .cap-list li{color:var(--text-2)}
.cap-list li::before{
  content:"";position:absolute;left:6px;top:14px;
  width:6px;height:6px;border-radius:50%;
  background:var(--gradient-blue);
}
.path-text{
  margin-top:8px;padding:14px 16px;
  background:rgba(59,130,246,.08);
  border:1px solid rgba(96,165,250,.2);
  border-radius:10px;font-size:14px;line-height:1.85;
}
.section-light .path-text{
  background:rgba(59,130,246,.06);
  border-color:rgba(59,130,246,.18);
}

.split-figure{
  border-radius:var(--radius-lg);overflow:hidden;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-dark);
  padding:clamp(14px,1.8vw,24px);
  display:flex;
  align-items:center;
  justify-content:center;
}
.section-light .split-figure{
  background:#eef2f8;border-color:var(--border);
}
.split-figure img{
  width:100%;
  display:block;
  margin:0 auto;
}
.split-figure-compact img{width:min(100%,460px)}
.split-figure-balanced img{width:min(100%,520px)}
.split-figure-zoom img{transform:scale(1.08);transform-origin:center center}

/* ===================== 6. Skill ===================== */
.skill-grid{margin-bottom:8px}
.skill-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 26px;
  transition:all .25s;
  border-top:3px solid transparent;
}
.skill-card:hover{
  transform:translateY(-4px);
  border-top-color:var(--primary);
  box-shadow:var(--shadow);
}
.skill-card h3{
  font-size:18px;font-weight:700;color:var(--text);
  margin-bottom:10px;
}
.skill-card p{color:var(--text-2);font-size:14.5px;line-height:1.75}

/* ===================== 8. 功能架构 (4 layers) ===================== */
.arch-layers{
  display:grid;
  grid-template-columns:1fr 1.2fr 1fr;
  gap:24px;
}
.arch-layers-4{grid-template-columns:1fr 1.4fr 1fr 1fr}
.arch-layer{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  transition:all .25s;
}
.arch-layer:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.arch-layer-core{
  background:linear-gradient(135deg,#eef4ff 0%,#fff 100%);
  border-color:rgba(59,130,246,.25);
}
.arch-layer-tag{
  display:inline-block;padding:6px 14px;
  background:var(--gradient-blue);color:#fff;
  font-size:13px;font-weight:700;
  border-radius:8px;margin-bottom:14px;
}
.arch-layer p{color:var(--text-2);font-size:14.5px;line-height:1.8}

/* ===================== 9. 技术架构 ===================== */
.tech-grid{margin-bottom:8px;gap:20px}
.tech-card{
  position:relative;
  padding:28px 26px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--border-dark);
  border-radius:var(--radius);
  transition:all .25s;
}
.tech-card:hover{
  border-color:rgba(96,165,250,.35);
  background:rgba(59,130,246,.05);
  transform:translateY(-3px);
}
.tech-no{
  position:absolute;top:18px;right:22px;
  font-size:32px;font-weight:900;
  color:rgba(255,255,255,.06);letter-spacing:-.04em;
}
.tech-card h3{
  font-size:18px;font-weight:700;color:#fff;
  margin-bottom:10px;position:relative;padding-left:14px;
}
.tech-card h3::before{
  content:"";position:absolute;left:0;top:9px;
  width:4px;height:14px;
  background:var(--gradient-blue);border-radius:2px;
}
.tech-card p{color:var(--text-on-dark-2);font-size:14px;line-height:1.85}
.tech-card-summary{
  background:linear-gradient(135deg,rgba(59,130,246,.12),rgba(139,92,246,.12));
  border-color:rgba(99,102,241,.3);
}
.tech-card-summary h3::before{display:none}
.tech-card-summary h3{padding-left:0}

/* ===================== 10. 性能数据看板 ===================== */
.score-board{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:36px 40px;
  margin-bottom:48px;
  box-shadow:var(--shadow-sm);
}
.score-title{
  font-size:18px;font-weight:700;color:var(--primary);
  margin-bottom:24px;letter-spacing:.02em;
}
.score-list{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:20px 48px;
}
.score-row{
  display:flex;justify-content:space-between;align-items:baseline;
  margin-bottom:8px;
}
.score-label{font-size:14.5px;color:var(--text-2);font-weight:500}
.score-val{
  font-size:24px;font-weight:800;color:var(--text);
  letter-spacing:-.02em;
}
.score-bar{
  height:8px;background:#e2e8f0;border-radius:4px;overflow:hidden;
}
.score-bar i{
  display:block;height:100%;
  background:var(--gradient-blue);border-radius:4px;
  transition:width .8s ease;
}
.score-summary{
  margin-top:32px;padding-top:24px;
  border-top:1px solid var(--border);
  display:flex;align-items:baseline;gap:16px;
  flex-wrap:wrap;
}
.score-summary span{font-size:15px;color:var(--text-2)}
.score-summary strong{
  font-size:42px;font-weight:900;
  background:var(--gradient-text-light);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:-.02em;
}
.score-summary em{
  padding:4px 12px;border-radius:6px;
  background:rgba(16,185,129,.12);
  color:#059669;font-size:13px;font-weight:700;
  font-style:normal;
}

.perf-title{
  font-size:22px;font-weight:700;color:var(--text);
  margin-bottom:24px;text-align:center;
}
.perf-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 22px;text-align:center;
  transition:all .25s;
}
.perf-card:hover{
  transform:translateY(-4px);
  border-color:rgba(59,130,246,.3);
  box-shadow:var(--shadow);
}
.perf-name{
  font-size:13px;font-weight:600;
  color:var(--text-3);letter-spacing:.04em;
  margin-bottom:12px;
}
.perf-num{
  font-size:42px;font-weight:900;
  background:var(--gradient-text-light);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:-.02em;line-height:1;
  margin-bottom:8px;
}
.perf-num small{font-size:18px;font-weight:700;margin-left:2px}
.perf-target{font-size:12.5px;color:var(--text-3)}

/* ===================== 11. 部署 ===================== */
.deploy-blocks{margin-bottom:48px;gap:32px}
.deploy-block{
  background:rgba(255,255,255,.03);
  border:1px solid var(--border-dark);
  border-radius:var(--radius-lg);
  padding:36px 32px;
}
.deploy-block h3{
  font-size:22px;font-weight:700;color:#fff;
  margin-bottom:16px;
}
.deploy-block .block-desc{
  color:var(--text-on-dark-2);font-size:14.5px;
  line-height:1.85;margin-bottom:16px;
}
.deploy-block .block-desc strong{color:#fff}
.deploy-block .cap-list{margin-bottom:16px}
.ha-title{
  font-size:22px;font-weight:700;color:#fff;
  margin-bottom:24px;text-align:center;
}
.ha-card{
  background:rgba(255,255,255,.03);
  border:1px solid var(--border-dark);
  border-radius:var(--radius);
  padding:24px 22px;
  border-left:3px solid transparent;
  transition:all .25s;
}
.ha-card:hover{
  border-left-color:var(--primary);
  background:rgba(59,130,246,.05);
  transform:translateY(-3px);
}
.ha-card h4{
  font-size:16px;font-weight:700;color:#fff;
  margin-bottom:8px;
}
.ha-card p{color:var(--text-on-dark-2);font-size:13.5px;line-height:1.75}

/* ===================== 12. 客户价值 ===================== */
.cv-grid{margin-bottom:48px;gap:24px}
.cv-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:36px 32px;
  transition:all .3s;
  position:relative;
}
.cv-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(99,102,241,.25);
}
.cv-tag{
  display:inline-block;
  padding:6px 14px;border-radius:999px;
  background:rgba(99,102,241,.1);
  color:var(--primary-2);
  font-weight:700;font-size:12px;letter-spacing:.05em;
  margin-bottom:16px;
}
.cv-card h3{font-size:22px;font-weight:700;margin-bottom:12px}
.cv-card p{color:var(--text-2);font-size:15px;line-height:1.85}

.benefit-title{
  font-size:22px;font-weight:700;color:var(--text);
  margin-bottom:24px;text-align:center;
}
.benefit-list{
  display:grid;grid-template-columns:repeat(5,1fr);
  gap:16px;
}
.benefit-list li{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px 16px;text-align:center;
  transition:all .25s;
}
.benefit-list li:hover{
  border-color:rgba(59,130,246,.3);
  box-shadow:var(--shadow-sm);transform:translateY(-3px);
}
.benefit-list strong{
  display:block;font-size:22px;font-weight:900;
  background:var(--gradient-text-light);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:8px;letter-spacing:-.02em;
}
.benefit-list span{
  display:block;font-size:13px;color:var(--text-2);line-height:1.7;
}

/* ===================== 13. CTA ===================== */
.cta{
  position:relative;padding:120px 0;text-align:center;
  background:linear-gradient(135deg,#0a0f1f 0%,#101a3a 50%,#1a1147 100%);
  color:#fff;overflow:hidden;
}
.cta-bg{position:absolute;inset:0;z-index:0;opacity:.5}
.cta-bg img{width:100%;height:100%;object-fit:cover}
.cta-inner{position:relative;z-index:1}
.cta-title{
  font-size:42px;font-weight:900;line-height:1.3;
  letter-spacing:-0.02em;margin-bottom:20px;
}
.cta-sub{
  font-size:17px;color:var(--text-on-dark-2);
  max-width:760px;margin:0 auto 36px;line-height:1.85;
}
.cta-actions{
  display:flex;gap:16px;justify-content:center;flex-wrap:wrap;
}

/* ===================== 页脚 ===================== */
.footer{
  background:#050912;padding:36px 0;
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
}
.footer-brand{display:flex;align-items:center;gap:14px;color:#fff}
.footer-name{font-weight:700;font-size:16px}
.footer-name sup{font-size:9px;font-weight:500;color:var(--text-on-dark-2)}
.footer-en{font-size:12px;color:var(--text-on-dark-3);margin-top:2px}
.footer-copy{color:var(--text-on-dark-3);font-size:13px}

/* ===================== 响应式 ===================== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero-title{font-size:48px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-5{grid-template-columns:repeat(3,1fr)}
  .arch-layers,.arch-layers-4{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:36px}
  .goal-list,.cap-list,.score-list{grid-template-columns:1fr}
  .benefit-list{grid-template-columns:repeat(3,1fr)}
  .nav-links{display:none}
}
@media (max-width:640px){
  .section{padding:64px 0}
  .section-title{font-size:28px}
  .hero{padding:120px 0 64px}
  .hero-title{font-size:36px}
  .hero-visual img{
    width:132%;
    transform:translate(-12%,-1%);
  }
  .grid-4,.grid-3,.grid-2,.grid-5{grid-template-columns:1fr}
  .tech-grid{grid-template-columns:1fr}
  .benefit-list{grid-template-columns:repeat(2,1fr)}
  .cta-title{font-size:30px}
  .tab-nav{width:100%;flex-direction:column}
  .tab-btn{text-align:left}
  .goal-grid,.score-board,.deploy-block{padding:28px 24px}
}