* { margin:0; padding:0; box-sizing:border-box; }
:root {
  --navy:#15183a; --navy2:#232a5e; --brand:#3B2E8C; --brand2:#5a47b8;
  --gold:#E0A82E; --gold-d:#b9861a; --teal:#0FA3A3; --ink:#1c2030; --muted:#6b7280;
  --bg:#f6f7fb; --line:#e7e9f2; --card:#fff;
}
body { font-family:-apple-system,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,sans-serif; color:var(--ink); background:var(--bg); line-height:1.7; }
a { color:inherit; text-decoration:none; }
.container { max-width:1160px; margin:0 auto; padding:0 20px; }
img { max-width:100%; }

/* ===== 导航 ===== */
.nav { position:sticky; top:0; z-index:50; background:rgba(21,24,58,.96); backdrop-filter:blur(8px); box-shadow:0 2px 18px rgba(0,0,0,.18); }
.nav-inner { display:flex; align-items:center; justify-content:space-between; height:66px; }
.logo { color:#fff; font-weight:800; font-size:20px; letter-spacing:.5px; }
.logo span { color:var(--gold); font-weight:600; margin-left:4px; }
.nav-links { display:flex; gap:26px; }
.nav-links a { color:#cdd2e6; font-size:15px; transition:color .2s; }
.nav-links a:hover { color:#fff; }

/* ===== 按钮 ===== */
.btn { display:inline-block; padding:11px 22px; border-radius:9px; font-weight:600; font-size:15px; cursor:pointer; transition:.2s; border:none; text-align:center; }
.btn-gold { background:linear-gradient(135deg,var(--gold),#f0bd55); color:#3a2a00; }
.btn-gold:hover { opacity:.92; transform:translateY(-1px); }
.btn-teal { background:var(--teal); color:#fff; }
.btn-teal:hover { background:#0c8c8c; }
.btn-ghost { background:transparent; color:#fff; border:1px solid rgba(255,255,255,.45); }
.btn-ghost:hover { border-color:#fff; background:rgba(255,255,255,.08); }
.btn-ghost2 { background:#fff; color:var(--brand); border:1px solid var(--brand); }
.btn-ghost2:hover { background:var(--brand); color:#fff; }

/* ===== Hero ===== */
.hero { background:linear-gradient(150deg,var(--navy) 0%,var(--navy2) 55%,var(--brand) 130%); color:#fff; padding:64px 0 0; position:relative; overflow:hidden; }
.hero::after { content:""; position:absolute; right:-140px; top:-90px; width:460px; height:460px; background:radial-gradient(circle,rgba(224,168,46,.22),transparent 70%); }
.hero-inner { display:flex; gap:48px; align-items:center; position:relative; }
.hero-copy { flex:1.15; }
.hero-badge { display:inline-block; background:rgba(224,168,46,.16); color:var(--gold); border:1px solid rgba(224,168,46,.4); padding:6px 14px; border-radius:20px; font-size:13px; font-weight:600; margin-bottom:18px; }
.hero h1 { font-size:44px; font-weight:800; line-height:1.22; margin-bottom:18px; }
.hero h1 em { color:var(--gold); font-style:normal; }
.hero p.sub { font-size:17px; color:#c4cbe6; max-width:560px; margin-bottom:26px; }
.hero-cta { display:flex; gap:14px; flex-wrap:wrap; }
.trust-row { display:flex; gap:22px; margin-top:26px; flex-wrap:wrap; font-size:13px; color:#aab2d6; }
.trust-row span { position:relative; padding-left:2px; }

/* Hero 表单 */
.hero-form { flex:0 0 360px; background:#fff; border-radius:16px; padding:22px; box-shadow:0 20px 50px rgba(0,0,0,.28); position:relative; z-index:2; }
.hero-form-head { text-align:center; margin-bottom:16px; }
.hf-title { font-size:18px; font-weight:800; color:var(--navy); }
.hf-sub { font-size:13px; color:var(--muted); margin-top:4px; }
.gated-form .form-row { margin-bottom:12px; }
.gated-form input, .gated-form select { width:100%; padding:12px 14px; border:1px solid #e3e6ef; border-radius:8px; font-size:14px; font-family:inherit; background:#fff; outline:none; transition:border-color .2s; }
.gated-form input:focus, .gated-form select:focus { border-color:var(--brand); box-shadow:0 0 0 3px rgba(59,46,140,.1); }
.lead-submit-btn { width:100%; padding:13px; background:linear-gradient(135deg,var(--gold),#f0bd55); color:#3a2a00; border:none; border-radius:8px; font-size:15px; font-weight:700; cursor:pointer; transition:.2s; }
.lead-submit-btn:hover { opacity:.92; }
.lead-submit-btn:disabled { opacity:.6; cursor:not-allowed; }
.hero-form-tips { text-align:center; font-size:12px; color:#9aa1b5; margin-top:10px; }
.hero-success { text-align:center; padding:26px 10px; }
.hero-success { font-size:22px; font-weight:800; color:var(--navy); }
.hero-success span { display:block; font-size:14px; color:var(--muted); font-weight:400; margin-top:8px; }
.hero-success-ci { margin-top:16px; font-size:13px; color:var(--brand); font-weight:600; }

/* 数据实力带 */
.stats { display:flex; gap:42px; margin-top:42px; padding-bottom:48px; flex-wrap:wrap; }
.stat .n { font-size:32px; font-weight:800; color:var(--gold); }
.stat .l { font-size:14px; color:#aeb6d8; margin-top:2px; }

/* ===== 通用 section ===== */
.section { padding:62px 0; }
.section.alt { background:#fff; }
.sec-head { text-align:center; margin-bottom:36px; }
.sec-head h2 { font-size:30px; font-weight:800; color:var(--navy); }
.sec-head p { color:var(--muted); margin-top:10px; font-size:16px; }

/* 卡片 */
.cards { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.card { background:var(--card); border:1px solid var(--line); border-radius:14px; padding:24px; transition:.2s; }
.card:hover { box-shadow:0 10px 30px rgba(21,24,58,.08); transform:translateY(-3px); border-color:var(--brand2); }
.card .ic { width:46px; height:46px; border-radius:11px; background:rgba(59,46,140,.1); color:var(--brand); display:flex; align-items:center; justify-content:center; font-size:22px; margin-bottom:14px; }
.card h3 { font-size:17px; color:var(--navy); margin-bottom:8px; }
.card p { font-size:14px; color:var(--muted); }

/* 行业网格 */
.ind-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.ind-card { display:block; background:var(--card); border:1px solid var(--line); border-radius:12px; padding:20px; transition:.2s; }
.ind-card:hover { border-color:var(--brand2); box-shadow:0 8px 24px rgba(59,46,140,.14); transform:translateY(-2px); }
.ind-card .t { font-weight:700; color:var(--navy); font-size:16px; }
.ind-card .d { font-size:13px; color:var(--muted); margin-top:6px; }
.ind-card .go { color:var(--brand2); font-size:13px; margin-top:12px; font-weight:600; }

/* 模式网格 */
.mode-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.mode-card { background:var(--card); border:1px solid var(--line); border-radius:14px; padding:22px; display:flex; flex-direction:column; transition:.2s; }
.mode-card:hover { box-shadow:0 10px 30px rgba(21,24,58,.08); transform:translateY(-3px); }
.mode-card .tag { display:inline-block; font-size:12px; color:var(--brand2); background:rgba(59,46,140,.1); padding:3px 10px; border-radius:20px; width:fit-content; margin-bottom:10px; }
.mode-card h3 { font-size:18px; color:var(--navy); margin-bottom:8px; }
.mode-card p { font-size:14px; color:var(--muted); flex:1; }
.mode-foot { display:flex; align-items:center; justify-content:space-between; margin-top:16px; }
.price { font-size:20px; font-weight:800; color:var(--navy); }
.price small { font-size:13px; color:var(--muted); font-weight:400; }
.mode-more { text-align:center; margin-top:28px; }

/* 步骤 */
.steps { display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
.step { text-align:center; }
.step .num { width:50px; height:50px; border-radius:50%; background:linear-gradient(135deg,var(--brand),var(--brand2)); color:#fff; font-size:20px; font-weight:800; display:flex; align-items:center; justify-content:center; margin:0 auto 14px; }
.step h4 { color:var(--navy); font-size:16px; }
.step p { font-size:13px; color:var(--muted); margin-top:6px; }

/* 场景 */
.scenario-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
.sc-card { background:var(--card); border:1px solid var(--line); border-radius:14px; padding:22px; transition:.2s; }
.sc-card:hover { box-shadow:0 10px 28px rgba(21,24,58,.08); transform:translateY(-3px); }
.sc-tag { display:inline-block; font-size:12px; color:var(--teal); background:rgba(15,163,163,.1); padding:3px 10px; border-radius:20px; margin-bottom:10px; }
.sc-card h4 { font-size:16px; color:var(--navy); margin-bottom:8px; }
.sc-card p { font-size:13px; color:var(--muted); margin-bottom:10px; }
.sc-card ul { list-style:none; }
.sc-card ul li { font-size:13px; color:#45506a; padding:5px 0 5px 20px; position:relative; border-top:1px dashed var(--line); }
.sc-card ul li::before { content:"✓"; position:absolute; left:0; color:var(--brand2); font-weight:800; }
.sc-note { text-align:center; font-size:13px; color:var(--muted); margin-top:22px; }

/* 信任背书 */
.trust { background:linear-gradient(135deg,var(--navy),var(--brand)); color:#fff; }
.trust-inner { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.ti { text-align:center; padding:8px; }
.ti-ic { font-size:34px; margin-bottom:10px; }
.ti-t { font-size:18px; font-weight:700; margin-bottom:8px; color:var(--gold); }
.ti p { font-size:14px; color:#c6cce8; }

/* CTA banner */
.cta { background:linear-gradient(135deg,var(--teal),var(--navy)); color:#fff; border-radius:18px; padding:46px; text-align:center; }
.cta h2 { font-size:28px; margin-bottom:12px; }
.cta p { color:#dbeaf0; margin-bottom:24px; }

/* 页脚 */
.footer { background:var(--navy); color:#aeb6d8; padding:48px 0 28px; }
.footer a { color:#cdd2e6; }
.footer .cols { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:30px; }
.footer h4 { color:#fff; font-size:15px; margin-bottom:14px; }
.footer ul { list-style:none; }
.footer ul li { padding:5px 0; font-size:14px; }
.footer .bottom { border-top:1px solid rgba(255,255,255,.12); margin-top:30px; padding-top:18px; font-size:13px; color:#8491b5; text-align:center; }

/* 浮动挂件 */
.float-widget { position:fixed; right:22px; bottom:22px; z-index:9998; }
.fw-btns { display:flex; align-items:center; gap:10px; }
.fw-btn { width:48px; height:48px; border-radius:50%; border:none; cursor:pointer; font-size:20px; display:flex; align-items:center; justify-content:center; box-shadow:0 6px 18px rgba(0,0,0,.22); transition:.2s; color:#fff; text-decoration:none; }
.fw-btn:hover { transform:translateY(-2px); }
.fw-wx { background:var(--teal); }
.fw-tel { background:var(--brand2); }
.fw-cta { width:auto; padding:0 18px; border-radius:24px; background:linear-gradient(135deg,var(--gold),#f0bd55); color:#3a2a00; font-weight:700; font-size:14px; }
.fw-qr { position:absolute; right:0; bottom:62px; display:none; }
.fw-qr.open { display:block; animation:fadeIn .2s ease; }
@keyframes fadeIn { from{opacity:0;transform:translateY(8px);} to{opacity:1;transform:translateY(0);} }
.fw-qr-box { background:#fff; border-radius:14px; padding:16px; width:200px; text-align:center; box-shadow:0 12px 36px rgba(0,0,0,.25); }
.fw-qr-img { width:140px; height:140px; border-radius:10px; background:#f0f1f5; display:flex; align-items:center; justify-content:center; color:#9aa1b5; font-size:13px; margin:0 auto; }
.fw-qr-wx { font-size:13px; color:var(--navy); font-weight:600; margin:10px 0 6px; }
.fw-qr-tel { display:block; font-size:14px; color:var(--brand); font-weight:700; }

/* 表单错误提示 */
.form-error-tip { padding:10px 14px; border-radius:8px; font-size:13px; text-align:center; margin-top:10px; font-weight:500; background:rgba(232,85,122,.1); color:#C23B5C; border:1px solid rgba(232,85,122,.2); }

/* 响应式 */
@media(max-width:980px){
  .hero-inner { flex-direction:column; align-items:stretch; }
  .hero-form { flex:1 1 auto; }
  .cards,.ind-grid,.mode-grid,.steps,.scenario-grid,.trust-inner { grid-template-columns:repeat(2,1fr); }
  .footer .cols { grid-template-columns:1fr 1fr; }
  .nav-links { display:none; }
  .hero h1 { font-size:32px; }
}
@media(max-width:560px){
  .cards,.ind-grid,.mode-grid,.steps,.scenario-grid,.trust-inner { grid-template-columns:1fr; }
  .footer .cols { grid-template-columns:1fr; }
  .stats { gap:24px; }
}