/* X-UP 推广页共享样式 — 方向一·深蓝权威 */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --navy:#0A1B33; --navy-2:#0F2547;
  --blue:#1D5FBF; --blue-soft:#EEF4FC; --cyan:#0E7490;
  --ink:#111827; --ink-2:#374151; --ink-3:#6B7280;
  --line:#E5E7EB; --bg:#FFFFFF; --bg-2:#F6F8FB;
  --amber:#D97706;
}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--ink);line-height:1.7}
a{text-decoration:none;color:inherit}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
button{cursor:pointer}
svg{display:inline-block;vertical-align:middle}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 32px;height:72px;display:flex;align-items:center;gap:40px}
.logo img{height:52px;width:auto;object-fit:contain}
.nav-links{display:flex;gap:30px;margin-left:auto}
.nav-links a{font-size:14.5px;color:var(--ink-2);font-weight:500;padding:6px 0}
.nav-links a:hover{color:var(--blue)}
.nav-back{font-size:14px;color:var(--ink-3);display:inline-flex;align-items:center;gap:6px}
.nav-back:hover{color:var(--blue)}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;border-radius:8px;padding:12px 26px;border:1px solid transparent;transition:.2s;cursor:pointer}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#174E9E}
.btn-ghost{border-color:rgba(255,255,255,.3);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-light{background:#fff;color:var(--navy)}
.btn-light:hover{background:#E8EEF7}

/* HERO */
.hero{background:var(--navy);color:#fff;padding:158px 0 88px;position:relative;overflow:hidden}
.hero::after{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-cat{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:#6EA8E8;border:1px solid rgba(110,168,232,.35);padding:6px 14px;border-radius:4px;margin-bottom:24px}
.hero h1{font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.01em;margin-bottom:18px}
.hero h1 span{color:#6EA8E8}
.hero p.sub{font-size:16px;color:#B7C6DC;max-width:30em;margin-bottom:30px}
.hero p.sub b{color:#fff;font-weight:600}
.hero-actions{display:flex;gap:13px;flex-wrap:wrap}
.hero-points{display:flex;gap:24px;margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14);flex-wrap:wrap}
.hpoint{display:flex;align-items:center;gap:9px;font-size:13.5px;color:#9DB8DC}
.hpoint svg{color:#4ADE80;flex-shrink:0}
/* hero visual — CSS 效果图（系统界面示意，非真实截图） */
.hv-card{background:var(--navy-2);border:1px solid rgba(255,255,255,.12);border-radius:12px;overflow:hidden}
.hv-head{display:flex;align-items:center;gap:6px;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.1)}
.hv-head i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.18)}
.hv-head small{margin-left:auto;font-size:11px;color:#8FA6C6;letter-spacing:.08em}
.hv-body{padding:18px;display:grid;gap:10px}
.hv-row{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:8px;padding:12px 14px}
.hv-ico{width:32px;height:32px;border-radius:6px;background:rgba(110,168,232,.15);color:#6EA8E8;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.hv-row b{font-size:13.5px;font-weight:600}
.hv-row small{font-size:11.5px;color:#8FA6C6;display:block}
.hv-bar{margin-left:auto;width:56px;height:4px;border-radius:2px;background:rgba(255,255,255,.1);overflow:hidden;flex-shrink:0}
.hv-bar i{display:block;height:100%;background:#6EA8E8}
.hv-foot{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;padding:0 18px 18px}
.hv-foot div{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:8px;padding:11px;text-align:center}
.hv-foot b{font-size:18px;font-weight:800;color:#6EA8E8}
.hv-foot small{font-size:10.5px;color:#8FA6C6;display:block}

/* SECTION */
.sec{padding:88px 0}
.sec-2{background:var(--bg-2)}
.sec-head{margin-bottom:48px}
.sec-kicker{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--blue);margin-bottom:12px}
.sec h2{font-size:33px;font-weight:800;line-height:1.3;margin-bottom:12px}
.sec p.lead{font-size:16px;color:var(--ink-3);max-width:42em}

/* FEATURES */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px 26px;transition:.25s}
.sec-2 .feat{background:#fff}
.feat:hover{border-color:var(--blue);box-shadow:0 12px 32px rgba(29,95,191,.08)}
.feat-ico{width:44px;height:44px;border-radius:10px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feat h3{font-size:16.5px;font-weight:700;margin-bottom:9px}
.feat p{font-size:13.5px;color:var(--ink-3)}

/* DIFF */
.diff-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.diff{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px 30px;display:flex;gap:20px}
.sec-2 .diff{background:#fff}
.diff-ico{width:44px;height:44px;border-radius:10px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.diff h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.diff p{font-size:14px;color:var(--ink-3)}

/* AUDIENCE */
.aud-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.aud{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px 22px;text-align:center}
.sec-2 .aud{background:#fff}
.aud-ico{width:42px;height:42px;border-radius:10px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.aud h3{font-size:15px;font-weight:700;margin-bottom:7px}
.aud p{font-size:12.5px;color:var(--ink-3)}

/* PRICING */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:960px;margin:0 auto}
.price{background:#fff;border:1px solid var(--line);border-radius:12px;padding:32px 28px;display:flex;flex-direction:column;position:relative}
.price.hot{border-color:var(--blue);box-shadow:0 12px 36px rgba(29,95,191,.12)}
.price-hot-tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--blue);color:#fff;font-size:11.5px;font-weight:700;padding:4px 14px;border-radius:100px}
.price h3{font-size:17px;font-weight:700;margin-bottom:6px}
.price .p-for{font-size:12.5px;color:var(--ink-3);margin-bottom:18px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.price .p-num{font-size:32px;font-weight:800;letter-spacing:-.02em}
.price .p-num small{font-size:13px;font-weight:500;color:var(--ink-3);letter-spacing:0}
.price ul{list-style:none;display:grid;gap:10px;margin:20px 0 26px;flex:1}
.price li{display:flex;gap:9px;font-size:13.5px;color:var(--ink-2);align-items:flex-start}
.price li svg{flex-shrink:0;margin-top:4px;color:var(--blue)}
.price .btn{justify-content:center}

/* CTA */
.cta{background:var(--navy);color:#fff;padding:84px 0;text-align:center}
.cta h2{font-size:32px;font-weight:800;margin-bottom:12px}
.cta p{color:#B7C6DC;margin-bottom:32px;max-width:44em;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;gap:13px;justify-content:center;flex-wrap:wrap}
.cta-note{margin-top:30px;font-size:13px;color:#8FA6C6}

/* FOOTER */
footer{background:var(--navy-2);color:#8FA6C6;padding:44px 0 26px;font-size:13.5px}
.foot-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.foot-inner img{height:42px;width:auto;object-fit:contain}
.foot-links{display:flex;gap:24px}
.foot-links a:hover{color:#fff}

@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr}
  .hero-visual{display:none}
  .feat-grid,.diff-grid{grid-template-columns:1fr 1fr}
  .aud-grid{grid-template-columns:1fr 1fr}
  .price-grid{grid-template-columns:1fr;max-width:480px}
}
@media (max-width:768px){
  .nav-links{display:none}
  .feat-grid,.diff-grid,.aud-grid{grid-template-columns:1fr}
  .hero{padding:120px 0 64px}
  .hero h1{font-size:32px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}