:root{--red:#e70012;--red-d:#c4000f;--red-soft:#fdecee;--blue:#02438E;--blue-d:#032a5e;--blue-soft:#e7eef7;--ink:#0d1c34;--txt:#45546a;--muted:#7b8aa0;--mut:#7b8aa0;--bg:#f7f9fc;--card:#ffffff;--line:#e5ebf3;--shadow:0 8px 26px rgba(13,28,52,.08);--radius:14px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;color:var(--ink);background:var(--bg);font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
section{scroll-margin-top:78px}
/* ================= 顶栏 ================= */
.topbar{background:var(--blue-d);color:#cfe0f5;font-size:12.5px;padding:7px 0}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:12px}
.topbar a{color:#fff}
.topbar .tb-item{display:inline-flex;align-items:center;gap:6px;margin-right:18px}
.topbar .tb-item svg{width:14px;height:14px;fill:currentColor}
/* ================= 导航（与首页一致） ================= */
.navbar{position:sticky;top:0;z-index:1000;background:#fff;box-shadow:0 2px 14px rgba(28,33,48,.08)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;cursor:pointer}
.logo .logo-mark{width:42px;height:42px;border-radius:10px;background:linear-gradient(135deg,var(--red),var(--red-d));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:13px;letter-spacing:1px;box-shadow:0 4px 12px rgba(231,0,18,.35)}
.logo .logo-txt b{display:block;font-size:17px;color:var(--ink);line-height:1.25}
.logo .logo-txt b em{font-style:normal;color:var(--red)}
.logo .logo-txt span{font-size:11px;color:var(--mut);letter-spacing:1px}
.nav-menu{display:flex;align-items:center;gap:2px;list-style:none}
.nav-menu>li{position:relative}
.nav-menu>li>a{display:flex;align-items:center;gap:4px;padding:24px 15px;font-size:15px;font-weight:500;color:var(--ink);transition:.2s;border-bottom:3px solid transparent}
.nav-menu>li>a:hover,.nav-menu>li.active>a{color:var(--red);border-bottom-color:var(--red)}
.nav-menu>li>a .caret{width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
.submenu{position:absolute;top:100%;left:0;min-width:210px;background:#fff;border-radius:0 0 10px 10px;box-shadow:0 14px 34px rgba(28,33,48,.14);padding:8px;opacity:0;visibility:hidden;transform:translateY(10px);transition:.22s;z-index:999;list-style:none}
.nav-menu>li:hover .submenu,.nav-menu>li:focus-within .submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu a{display:block;padding:10px 14px;font-size:14px;color:var(--txt);border-radius:6px;transition:.15s}
.submenu a:hover{background:rgba(231,0,18,.07);color:var(--red);padding-left:18px}
.nav-cta{margin-left:14px}
.btn.sm{padding:11px 20px;font-size:14px;min-height:44px;line-height:1.4;display:inline-flex;align-items:center;justify-content:center}
.hamburger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.hamburger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;background:linear-gradient(135deg,var(--red),var(--red-d));color:#fff;font-weight:600;padding:11px 26px;border-radius:8px;font-size:15px;transition:.25s;border:none;cursor:pointer;text-align:center;box-shadow:0 6px 16px rgba(231,0,18,.28)}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(231,0,18,.36)}
.btn.ghost{background:transparent;color:var(--blue);border:1.5px solid var(--blue);box-shadow:none}
.btn.ghost:hover{background:var(--blue-soft)}
.btn.white{background:#fff;color:var(--red);box-shadow:0 6px 16px rgba(4,12,24,.2)}
/* ================= Hero ================= */
.hero{position:relative;background:linear-gradient(120deg,var(--blue-d) 0%,#06336f 55%,#0a3f85 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 78% 40%,rgba(231,0,18,.32),transparent 55%)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center;padding-top:74px;padding-bottom:84px}
.hero-tag{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#ffd9dc;font-size:13px;font-weight:600;letter-spacing:1px;padding:6px 14px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:clamp(30px,4.4vw,48px);line-height:1.28;font-weight:800;margin-bottom:20px}
.hero h1 em{font-style:normal;color:#ff515e}
.hero p{color:#c9d8ee;max-width:560px;font-size:15.5px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-img{border-radius:18px;overflow:hidden;box-shadow:0 24px 60px rgba(2,15,40,.5);border:1px solid rgba(255,255,255,.14)}
.hero-flag{display:flex;gap:26px;flex-wrap:wrap;margin-top:34px;padding-top:26px;border-top:1px solid rgba(255,255,255,.16)}
.hero-flag b{font-size:24px;color:#ff515e;display:block}
.hero-flag span{font-size:12.5px;color:#a9bddb}
/* ================= 通用区块 ================= */
.section{padding:74px 0}
.section.bg-gray{background:#eef3fa}
.section.bg-blue{background:linear-gradient(135deg,var(--blue-d),#07408a);color:#fff}
.sec-head{text-align:center;max-width:760px;margin:0 auto 44px}
.sec-tag{display:inline-block;background:var(--red-soft);color:var(--red);font-size:12.5px;font-weight:700;letter-spacing:2px;padding:5px 14px;border-radius:999px;margin-bottom:14px}
.sec-head h2{font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.35}
.sec-head .sub{color:var(--muted);margin-top:10px;font-size:15px}
.sec-head .line{width:56px;height:4px;background:linear-gradient(90deg,var(--red),#ff6a74);border-radius:2px;margin:18px auto 0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s;box-shadow:var(--shadow)}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(13,28,52,.12);border-color:#e8b3b8}
.card h3{font-size:17px;margin:14px 0 8px}
.card p{color:var(--txt);font-size:14px}
.ic{width:46px;height:46px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;font-size:22px;font-weight:800}
.ic-red{background:var(--red-soft);color:var(--red)}
.ic-blue{background:var(--blue-soft);color:var(--blue)}
.num-chip{font-family:Georgia,serif;color:var(--red)}
/* ================= 统计条 ================= */
.stats{background:linear-gradient(135deg,var(--red),#c4000f);color:#fff;padding:26px 0}
.stat{text-align:center;padding:10px 6px}
.stat b{font-size:32px;font-weight:800;display:block;line-height:1.2}
.stat b em{font-style:normal;color:#ffd9dc}
.stat span{font-size:13px;color:#ffe9ea}
/* ================= 概况 ================= */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
.about-photo{border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.kv{border-left:3px solid var(--red);padding:4px 0 4px 16px;margin:18px 0}
.kv h3{font-size:17px;color:var(--red)}
.kv p{color:var(--txt);font-size:14.5px;margin-top:6px}
.industry-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.industry-tags span{background:var(--blue-soft);color:var(--blue);font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px}
/* ================= 时间线 ================= */
.timeline{max-width:880px;margin:0 auto;position:relative}
.timeline::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--red),var(--blue));transform:translateX(-50%);border-radius:2px}
.tl-item{position:relative;width:50%;padding:0 46px 46px 0}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 46px 46px}
.tl-dot{position:absolute;right:-9px;top:6px;width:18px;height:18px;border-radius:50%;background:#fff;border:4px solid var(--red);z-index:2}
.tl-item:nth-child(even) .tl-dot{right:auto;left:-9px}
.tl-year{font-family:Georgia,serif;font-size:30px;font-weight:800;color:var(--red);line-height:1}
.tl-item:nth-child(even) .tl-year{color:var(--blue)}
.tl-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow);margin-top:8px}
.tl-card h3{font-size:16px;margin-bottom:6px}
.tl-card p{color:var(--txt);font-size:13.5px}
/* ================= GEO ================= */
.geo-intro{max-width:820px;margin:0 auto 26px;text-align:center}
.geo-intro p{color:var(--txt);font-size:15px;margin-top:10px}
.loop-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:34px 0 8px}
.loop-step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;text-align:center;position:relative;transition:.25s}
.loop-step:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.loop-step .n{width:34px;height:34px;line-height:34px;border-radius:50%;background:linear-gradient(135deg,var(--red),var(--red-d));color:#fff;font-weight:800;margin:0 auto 12px;font-size:15px}
.loop-step h4{font-size:15px;margin-bottom:6px}
.loop-step p{font-size:13px;color:var(--muted)}
.adv-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
.adv-item{display:flex;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.25s;box-shadow:var(--shadow)}
.adv-item:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(13,28,52,.12)}
.adv-item h4{font-size:16px;margin-bottom:8px;color:var(--ink)}
.adv-item p{font-size:13.8px;color:var(--txt)}
.adv-ic{flex-shrink:0;width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--red),#ff5a64);color:#fff;display:flex;align-items:center;justify-content:center}
.adv-ic.blue{background:linear-gradient(135deg,var(--blue),#2a70c4)}
.adv-ic svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
/* ================= 智能体官网 ================= */
.agent-head{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-bottom:44px}
.agent-head .lead{color:var(--txt);font-size:15px;margin-top:12px}
.agent-head .lead b{color:var(--ink)}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.25s;box-shadow:var(--shadow);position:relative;overflow:hidden}
.scene-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--red),var(--blue))}
.scene-card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(13,28,52,.12)}
.scene-card h4{font-size:16px;margin:12px 0 8px}
.scene-card p{font-size:13.5px;color:var(--txt)}
.scene-card .badge{display:inline-block;font-size:12px;font-weight:700;color:var(--red);background:var(--red-soft);padding:3px 10px;border-radius:999px}
/* ================= 数字服务能力 ================= */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.service-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;text-align:center;transition:.25s}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#e8b3b8}
.service-card .ic{margin:0 auto}
.service-card h4{font-size:16px;margin:14px 0 8px}
.service-card p{font-size:13.5px;color:var(--txt)}
/* ================= 价格 ================= */
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:940px;margin:0 auto}
.price-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:32px 30px;position:relative;box-shadow:var(--shadow)}
.price-card.hot{border:2px solid var(--red);background:linear-gradient(180deg,#fff,var(--red-soft))}
.price-flag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--red),var(--red-d));color:#fff;font-size:12.5px;font-weight:700;padding:5px 16px;border-radius:999px;white-space:nowrap}
.price-card h3{font-size:19px}
.price-num{font-size:40px;font-weight:800;color:var(--red);margin:10px 0 2px}
.price-num small{font-size:15px;color:var(--muted);font-weight:400}
.price-tag{font-size:13px;color:var(--muted);margin-bottom:16px}
.price-card ul{list-style:none;margin:6px 0 20px}
.price-card li{position:relative;padding:7px 0 7px 24px;color:var(--txt);font-size:14px;border-bottom:1px dashed var(--line)}
.price-card li:last-child{border-bottom:none}
.price-card li::before{content:"";position:absolute;left:2px;top:14px;width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--red),#ff5a64)}
.price-card.hot li::before{background:linear-gradient(135deg,var(--red),#ff5a64)}
.value-band{max-width:940px;margin:44px auto 0;background:linear-gradient(135deg,var(--blue-d),#07408a);color:#fff;border-radius:18px;padding:30px 34px;display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:center}
.value-band h3{font-size:19px;margin-bottom:10px}
.value-band p{font-size:14px;color:#c9d8ee}
.value-band .big{font-size:34px;font-weight:800;color:#ff515e;text-align:right;line-height:1.2}
.value-band .big small{font-size:14px;color:#ffd9dc;display:block;font-weight:400}
/* ================= 愿景 ================= */
.vision{position:relative;background:linear-gradient(120deg,var(--blue-d),#06336f);color:#fff;overflow:hidden}
.vision-inner{position:relative;z-index:2;max-width:860px;margin:0 auto;text-align:center;padding:20px 0}
.vision h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin-bottom:22px}
.vision h2 em{font-style:normal;color:#ff515e}
.vision p{color:#c9d8ee;font-size:15.5px;margin-bottom:12px}
.vision .v-line{width:56px;height:4px;background:linear-gradient(90deg,#ff515e,var(--red));border-radius:2px;margin:22px auto}
/* ================= 联系 ================= */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.cinfo{border-left:4px solid var(--red);background:var(--card);border-radius:var(--radius);padding:28px 30px;box-shadow:var(--shadow)}
.cinfo h3{font-size:18px;margin-bottom:6px}
.cinfo .phone{font-size:26px;font-weight:800;color:var(--red);margin:4px 0 2px}
.cinfo .addr{color:var(--txt);font-size:14.5px}
.cform{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;box-shadow:var(--shadow)}
.cform h3{font-size:18px;margin-bottom:16px}
.cform input,.cform textarea{width:100%;border:1.5px solid var(--line);border-radius:8px;padding:12px 14px;font-size:14px;font-family:inherit;color:var(--ink);margin-bottom:14px;background:#fbfcfe;min-height:44px}
.cform input:focus,.cform textarea:focus{outline:none;border-color:var(--red)}
.cform textarea{min-height:100px;resize:vertical}
.form-ok{display:none;background:#e8f7ee;border:1px solid #bfe8cf;color:#1d7a46;padding:13px 16px;border-radius:8px;font-size:13.5px;margin-top:2px}
/* ================= 页脚 ================= */
.footer{background:var(--blue-d);color:#c5d6ef;padding:52px 0 0}
.footer-main{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:36px}
.footer h4{color:#fff;font-size:16px;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer h4::after{content:"";position:absolute;left:0;bottom:0;width:30px;height:3px;background:var(--red);border-radius:2px}
.footer ul{list-style:none}
.footer li{margin-bottom:9px;font-size:13.8px}
.footer a:hover{color:#fff}
.footer .f-logo b{font-size:19px;color:#fff;display:block;margin-bottom:10px}
.footer .f-logo span{font-size:12.5px;color:#9db3d6}
.footer .f-logo p{font-size:13.5px;color:#c5d6ef;margin-top:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;font-size:12.5px;text-align:center;color:#93a9cf}
/* ================= 滚动显现 ================= */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}
/* ================= 悬浮电话 ================= */
.float-phone{position:fixed;right:22px;bottom:26px;z-index:950;width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--red),var(--red-d));color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px rgba(231,0,18,.4);transition:.25s;animation:pulse 2.4s infinite}
.float-phone:hover{transform:translateY(-4px) scale(1.05)}
@keyframes pulse{0%{box-shadow:0 10px 26px rgba(231,0,18,.4)}50%{box-shadow:0 10px 30px rgba(231,0,18,.65)}100%{box-shadow:0 10px 26px rgba(231,0,18,.4)}}
/* ================= 响应式 ================= */
@media(max-width:1024px){
  .grid4,.scene-grid,.service-grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:1fr}
  .loop-steps{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .hero .container{grid-template-columns:1fr;padding-top:48px;padding-bottom:56px}
  .hero-img{max-width:560px}
  .about-grid,.agent-head,.contact-grid,.value-band{grid-template-columns:1fr}
  .value-band .big{text-align:center;font-size:30px}
  .price-grid{grid-template-columns:1fr;max-width:560px}
}
@media(max-width:768px){
  .hamburger{display:flex}
  .nav-menu{position:fixed;top:0;right:-100%;width:78%;max-width:340px;height:100vh;background:#fff;flex-direction:column;align-items:stretch;padding:76px 20px 30px;box-shadow:-12px 0 40px rgba(0,0,0,.16);transition:right .32s ease;overflow-y:auto;z-index:999}
  .nav-menu.open{right:0}
  .nav-menu>li>a{padding:14px 12px;border-bottom:1px solid var(--line);border-left:3px solid transparent}
  .nav-menu>li>a:hover,.nav-menu>li.active>a{border-bottom-color:var(--line);border-left-color:var(--red)}
  .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;padding:0 0 6px 14px;display:none}
  .nav-menu>li.open-m .submenu{display:block}
  .nav-cta{margin-left:0;margin-top:16px;text-align:center}
  .nav-mask{position:fixed;inset:0;background:rgba(10,16,32,.5);z-index:998;display:none}
  .nav-mask.show{display:block}
  .topbar .tb-addr{display:none}
  .topbar .tb-slogan{display:none}
}
@media(max-width:767px){
  .section{padding:56px 0}
  .timeline::before{left:10px}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 30px 36px}
  .tl-dot,.tl-item:nth-child(even) .tl-dot{left:2px;right:auto}
  .grid2,.grid3{grid-template-columns:1fr}
}
@media(max-width:560px){
  .grid4,.scene-grid,.service-grid,.loop-steps{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .price-card{padding:26px 20px}
  .stats b{font-size:26px}
  .float-phone{right:16px;bottom:18px;width:52px;height:52px}
}