:root{
  --c-main:#0b5fff; --c-deep:#0f2f8a; --c-cyan:#12b0ff;
  --ink:#182437; --mut:#5d6b84; --line:#e5ecf7; --bg:#f4f8ff;
  --grad:linear-gradient(135deg,#0f2f8a,#0b5fff 52%,#12b0ff);
  --grad2:linear-gradient(135deg,#ff8a3d,#ff5e3a);
  --radius:16px;
  --shadow:0 10px 30px rgba(15,47,138,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,sans-serif;color:var(--ink);background:#fff;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:min(1160px,92%);margin:0 auto}
.section{padding:86px 0}
.section-soft{background:var(--bg)}
.sec-head{text-align:center;max-width:780px;margin:0 auto 48px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--c-main);background:#e9f1ff;border:1px solid #d5e3ff;padding:5px 16px;border-radius:999px;margin-bottom:14px}
.sec-head h2{font-size:clamp(25px,3.4vw,36px);font-weight:800;line-height:1.3}
.sec-head h2 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head p{color:var(--mut);margin-top:12px;font-size:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:999px;padding:12px 26px;font-size:15px;font-weight:600;cursor:pointer;border:0;transition:transform .2s,box-shadow .2s,background .2s;line-height:1.4}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(11,95,255,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(11,95,255,.4)}
.btn-orange{background:var(--grad2);color:#fff;box-shadow:0 8px 22px rgba(255,94,58,.3)}
.btn-orange:hover{transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--c-main);border:1.5px solid #c9dcff}
.btn-ghost:hover{background:#eef4ff}
.btn-lg{padding:15px 32px;font-size:16px}
.btn-block{width:100%}
/* 顶部导航 */
.hdr{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.hdr .container{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;white-space:nowrap}
.brand .logo{width:38px;height:38px;border-radius:11px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:0 6px 16px rgba(11,95,255,.35);flex:none}
.brand b{display:block;font-size:17px;line-height:1.25}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--mut);letter-spacing:.5px}
.nav{display:flex;gap:26px;margin-left:auto;font-size:15px}
.nav a{color:#35435f;font-weight:500;position:relative;padding:6px 0;transition:color .2s}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2.5px;border-radius:2px;background:var(--c-main);transition:right .25s}
.nav a:hover,.nav a.active{color:var(--c-main)}
.nav a.active::after{right:0}
.hdr .actions{display:flex;align-items:center;gap:12px}
.hdr .tel{font-size:15px;color:var(--ink);font-weight:600;white-space:nowrap}
.hdr .tel b{color:var(--c-main);font-size:17px}
.burger{display:none;margin-left:auto;background:none;border:0;font-size:26px;cursor:pointer;color:var(--ink);line-height:1}
/* 首屏 */
.hero{position:relative;overflow:hidden;background:radial-gradient(900px 480px at 85% -12%,#e3eeff 0%,transparent 60%),radial-gradient(700px 400px at -8% 40%,#eaf3ff 0%,transparent 55%),linear-gradient(180deg,#f7faff,#fff)}
.hero .container{display:grid;grid-template-columns:1.04fr .96fr;gap:52px;align-items:center;padding:72px 0 84px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:#0c63e4;background:#fff;border:1px solid #d8e6ff;border-radius:999px;padding:7px 15px;margin-bottom:20px;box-shadow:0 4px 14px rgba(11,95,255,.1)}
.hero h1{font-size:clamp(31px,4.7vw,52px);line-height:1.22;font-weight:900;letter-spacing:.3px}
.hero h1 .grad-txt{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{font-size:17.5px;color:var(--mut);margin:18px 0 8px;max-width:560px}
.hero .ticks{display:flex;flex-wrap:wrap;gap:8px 20px;margin:18px 0 26px}
.hero .ticks li{color:#33415c;font-size:14.5px}
.hero .ticks b{color:#0c63e4}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-note{font-size:12.5px;color:#8b99b0;margin-top:16px}
.hero-visual{position:relative}
.shot-window{border-radius:18px;overflow:hidden;box-shadow:0 30px 70px rgba(15,47,138,.2);border:1px solid #dbe7fb;background:#fff}
.shot-bar{display:flex;align-items:center;gap:7px;padding:11px 15px;background:#f2f6ff;border-bottom:1px solid #e2ebfb}
.shot-bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.shot-bar i:nth-child(1){background:#ff5f57}.shot-bar i:nth-child(2){background:#febc2e}.shot-bar i:nth-child(3){background:#28c840}
.shot-bar span{margin-left:auto;font-size:12px;color:#9aa7bf;font-family:Consolas,monospace}
.hero-float{position:absolute;left:-34px;bottom:-20px;background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:14px 18px;display:flex;align-items:center;gap:12px;border:1px solid var(--line);animation:floaty 4s ease-in-out infinite}
.hero-float .f-ico{width:42px;height:42px;border-radius:12px;background:#eaf2ff;color:var(--c-main);display:flex;align-items:center;justify-content:center;font-size:21px;flex:none}
.hero-float b{display:block;font-size:14px;line-height:1.4}
.hero-float small{color:var(--mut);font-size:12px}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}/* 功能卡片 */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.feat-card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--grad);opacity:0;transition:.25s}
.feat-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(15,47,138,.12)}
.feat-card:hover::before{opacity:1}
.feat-ico{width:54px;height:54px;border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:27px;margin-bottom:18px;background:linear-gradient(135deg,#e9f1ff,#d9e8ff)}
.feat-card:nth-child(2) .feat-ico{background:linear-gradient(135deg,#eafaf3,#d4f3e4)}
.feat-card:nth-child(3) .feat-ico{background:linear-gradient(135deg,#fff3e8,#ffe1c4)}
.feat-card:nth-child(4) .feat-ico{background:linear-gradient(135deg,#f3ecff,#e2d6ff)}
.feat-card:nth-child(5) .feat-ico{background:linear-gradient(135deg,#e8f7fb,#cdeef7)}
.feat-card:nth-child(6) .feat-ico{background:linear-gradient(135deg,#fdeef4,#fbd2e2)}
.feat-card h3{font-size:18px;margin-bottom:8px;font-weight:800}
.feat-card p{color:var(--mut);font-size:14.5px}
/* 功能详解 */
.detail{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:26px 0 10px}
.detail+.detail{margin-top:10px}
.detail h3{font-size:clamp(21px,2.6vw,28px);font-weight:800;margin-bottom:14px;line-height:1.35}
.detail h3 em{font-style:normal;color:var(--c-main)}
.detail p{color:var(--mut);margin-bottom:14px;font-size:15.5px}
.detail ul.tick{display:grid;gap:9px}
.detail ul.tick li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#2c3a55}
.tick i{flex:none;width:20px;height:20px;border-radius:50%;background:#e6f6ee;color:#14a05a;display:flex;align-items:center;justify-content:center;font-size:12px;margin-top:4px}
.detail .d-visual{order:2}
.detail:nth-of-type(even) .d-visual{order:1}
.detail:nth-of-type(even) .d-text{order:2}
.panel-shot{border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);background:#fff}
.panel-shot img{width:100%;height:auto}
.panel-cap{font-size:12.5px;color:var(--mut);text-align:center;padding:9px 12px;background:#fafcff;border-top:1px solid var(--line)}
/* 实拍展示 */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.g-item{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fff;transition:transform .25s,box-shadow .25s}
.g-item:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.g-item img{aspect-ratio:4/3;object-fit:cover;width:100%}
.g-item figcaption{padding:12px 14px}
.g-item figcaption b{font-size:14.5px}
.g-item figcaption span{display:block;font-size:12.5px;color:var(--mut);margin-top:2px}
/* 视频 */
.video-wrap{max-width:920px;margin:0 auto;border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:0 24px 60px rgba(15,47,138,.18)}
.video-wrap video{width:100%;display:block}
/* 价格 */
.price-banner{display:flex;align-items:center;justify-content:center;gap:10px;background:linear-gradient(90deg,#fff3e8,#ffe9d6);border:1px dashed #ffb380;color:#b45309;border-radius:12px;padding:12px 18px;margin-bottom:34px;font-weight:600;font-size:15px}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.price-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px 26px;display:flex;flex-direction:column;position:relative;transition:transform .25s,box-shadow .25s}
.price-card:hover{transform:translateY(-6px);box-shadow:0 20px 46px rgba(15,47,138,.12)}
.price-card.hot{border:2px solid var(--c-main);box-shadow:0 18px 46px rgba(11,95,255,.16)}
.tag-hot{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12.5px;font-weight:700;padding:4px 14px;border-radius:999px;white-space:nowrap}
.p-name{font-size:17px;font-weight:800}
.p-desc{font-size:13px;color:var(--mut);margin:5px 0 16px;min-height:40px}
.price{display:flex;align-items:baseline;gap:8px;margin-bottom:18px}
.price .cur{font-size:18px;font-weight:800;color:var(--c-main)}
.price .num{font-size:42px;font-weight:900;color:var(--c-main);line-height:1}
.price .per{color:var(--mut);font-size:13.5px}
.price .old{color:#b6c2d6;text-decoration:line-through;font-size:15px;font-weight:500}
.p-list{display:grid;gap:10px;margin:6px 0 24px;flex:1}
.p-list li{position:relative;padding-left:26px;font-size:14.5px;color:#33415c}
.p-list li::before{content:"✓";position:absolute;left:0;top:0;color:#0fbf6d;font-weight:800}
.p-list li.no{opacity:.45;text-decoration:line-through}
.p-list li.no::before{content:"—";color:#a5b1c6}
.p-note{font-size:13px;color:var(--mut);text-align:center;margin-top:30px;line-height:1.9}
.p-note a{color:var(--c-main);font-weight:600}/* 演示 */
.demo-band{background:var(--grad);border-radius:26px;padding:52px 40px;color:#fff;position:relative;overflow:hidden}
.demo-band::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.08);top:-180px;right:-120px}
.demo-band::after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.07);bottom:-120px;left:-60px}
.demo-band h3{font-size:clamp(22px,3vw,30px);font-weight:800;position:relative}
.demo-band>p{position:relative;opacity:.92;margin:10px 0 28px;font-size:15px}
.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;position:relative}
.demo-card{background:#fff;color:var(--ink);border-radius:16px;padding:24px;box-shadow:0 16px 36px rgba(8,30,90,.22)}
.demo-card h4{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:800;margin-bottom:6px}
.demo-card .d-addr{font-size:13px;color:var(--mut);margin-bottom:14px;word-break:break-all}
.acc-row{display:flex;align-items:center;gap:12px;background:#f5f8ff;border:1px solid #e3ecfb;border-radius:11px;padding:10px 14px;margin-bottom:10px;font-size:14.5px;flex-wrap:wrap}
.acc-row b{color:var(--c-main);font-weight:700}
.acc-row code{background:#fff;border:1px solid #dbe6f7;border-radius:7px;padding:2px 10px;font-family:Consolas,Menlo,monospace;color:#0c3aa0;font-size:13.5px}
.demo-card .btn{margin-top:8px}
/* 为什么选我们 */
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.why-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center}
.why-card .n{width:64px;height:64px;margin:0 auto 14px;border-radius:18px;background:var(--grad);color:#fff;font-size:30px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(11,95,255,.28)}
.why-card:nth-child(2) .n{background:linear-gradient(135deg,#17b26a,#0ea35e)}
.why-card:nth-child(3) .n{background:var(--grad2)}
.why-card h3{font-size:17px;font-weight:800;margin-bottom:8px}
.why-card p{font-size:14px;color:var(--mut)}
/* FAQ */
.faq{max-width:840px;margin:0 auto;display:grid;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden;transition:box-shadow .2s}
.faq-item.open{box-shadow:var(--shadow);border-color:#c9dcff}
.faq-q{display:flex;align-items:center;gap:14px;padding:17px 20px;cursor:pointer;font-weight:700;font-size:15.5px;user-select:none;background:none;border:0;width:100%;text-align:left;color:var(--ink)}
.faq-q .q-num{flex:none;width:26px;height:26px;border-radius:8px;background:#e9f1ff;color:var(--c-main);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800}
.faq-q .arr{margin-left:auto;transition:transform .25s;color:#9aa7bf;font-size:18px}
.faq-item.open .arr{transform:rotate(45deg)}
.faq-a{display:none;padding:2px 20px 18px 60px;color:var(--mut);font-size:14.5px}
.faq-item.open .faq-a{display:block}
/* 关于/联系 */
.about{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center}
.about h3{font-size:clamp(22px,3vw,30px);font-weight:800;margin-bottom:14px;line-height:1.4}
.about p{color:var(--mut);margin-bottom:12px;font-size:15.5px}
.contact-box{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:var(--shadow)}
.contact-box h4{font-size:18px;font-weight:800;margin-bottom:16px}
.contact-line{display:flex;align-items:flex-start;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:#33415c}
.contact-line:last-child{border-bottom:0}
.contact-line .ci{flex:none;width:38px;height:38px;border-radius:11px;background:#eef4ff;display:flex;align-items:center;justify-content:center;font-size:18px}
.contact-line b{display:block;font-size:13px;color:var(--mut);font-weight:600}
.contact-line a{color:var(--c-main);font-weight:800;font-size:20px}
/* footer */
.footer{background:#0d1b34;color:#9fb0cc;margin-top:70px}
.footer .container{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:26px 0;font-size:13.5px;flex-wrap:wrap}
.footer a{color:#c9d6ea}
.footer .fbrand{display:flex;align-items:center;gap:10px;color:#e7eefb;font-weight:800}
/* reveal 动画 */
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1);transition-delay:var(--d,0s)}
.rv.on{opacity:1;transform:none}
/* 移动端 */
.bottom-bar{display:none}
@media (max-width:960px){
  .hdr .container{height:58px}
  .nav{position:fixed;top:58px;left:0;right:0;background:#fff;flex-direction:column;gap:4px;padding:10px 6%;border-bottom:1px solid var(--line);transform:translateY(-140%);transition:transform .25s;box-shadow:0 16px 30px rgba(15,47,138,.12);margin:0}
  body.nav-open .nav{transform:none}
  .nav a{display:block;padding:11px 4px;font-size:16px;border-bottom:1px solid #f1f5fd}
  .burger{display:block}
  .hdr .actions .tel{display:none}
  .hero .container{grid-template-columns:1fr;padding:48px 0 58px;gap:40px}
  .hero-float{left:8px;bottom:-16px}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .detail{grid-template-columns:1fr;gap:30px}
  .detail:nth-of-type(even) .d-visual,.detail:nth-of-type(even) .d-text{order:0}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr;max-width:460px;margin:0 auto}
  .why{grid-template-columns:1fr}
  .about{grid-template-columns:1fr;gap:34px}
  .demo-band{padding:40px 22px}
}
@media (max-width:640px){
  .section{padding:60px 0}
  .sec-head{margin-bottom:34px}
  .feat-grid{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .demo-grid{grid-template-columns:1fr}
  .bottom-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;background:#fff;border-top:1px solid var(--line);padding:10px 12px calc(10px + env(safe-area-inset-bottom));gap:10px;box-shadow:0 -6px 20px rgba(15,47,138,.08)}
  .bottom-bar .btn{flex:1;padding:12px 10px;font-size:14.5px}
  body{padding-bottom:64px}
}

/* ===== 用户登录醒目按钮 ===== */
.btn-login{background:linear-gradient(135deg,#17264e,#2447a8);color:#fff;box-shadow:0 8px 22px rgba(15,47,138,.3)}
.btn-login:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(15,47,138,.42)}
.hdr .actions{flex:none}
.hdr .actions .btn{padding:10px 17px;font-size:14px;white-space:nowrap}
.hdr .actions .tel{white-space:nowrap}
.hp{position:absolute;left:-10000px;top:auto;width:1px;height:1px;overflow:hidden;opacity:0;pointer-events:none}

/* ===== 官网留资区块 ===== */
.lead-wrap{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:24px;padding:50px 54px;box-shadow:0 24px 60px rgba(15,47,138,.10);position:relative;overflow:hidden}
.lead-wrap::before{content:"";position:absolute;left:0;right:0;top:0;height:6px;background:var(--grad)}
.lead-info h3{font-size:clamp(23px,2.8vw,31px);font-weight:800;line-height:1.4;margin:0 0 14px}
.lead-info h3 em{font-style:normal;color:var(--c-main)}
.lead-info p{color:var(--mut);font-size:15.5px;margin-bottom:14px}
.lead-info p b{color:#2c3a55}
.lead-points{display:grid;gap:10px;margin:18px 0 12px}
.lead-points li{display:flex;align-items:center;gap:12px;font-size:14.5px;color:#2c3a55;background:#f5f9ff;border:1px solid #e3ecfb;border-radius:12px;padding:10px 14px}
.lead-points b{color:#0c63e4}
.lead-tel{font-size:13.5px;color:#8b99b0}
.lead-tel a{color:#0c63e4;font-weight:700}
.lead-form{background:linear-gradient(180deg,#f7faff,#fff);border:1px solid var(--line);border-radius:18px;padding:30px 28px;box-shadow:var(--shadow);position:relative}
.lead-form h4{font-size:19px;font-weight:800;margin-bottom:18px}
.lead-form label{display:block;margin-bottom:14px}
.lead-form label>span{display:block;font-size:13.5px;font-weight:600;color:#33415c;margin-bottom:7px}
.lead-form label>span i{color:#e3442f;font-style:normal}
.lead-form input,.lead-form select,.lead-form textarea{width:100%;border:1.5px solid #d5e2f7;border-radius:11px;padding:11px 14px;font-size:15px;font-family:inherit;color:var(--ink);background:#fff;outline:none;transition:border-color .2s,box-shadow .2s}
.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{border-color:var(--c-main);box-shadow:0 0 0 3px rgba(11,95,255,.12)}
.lead-form textarea{resize:vertical}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.lead-form .btn{margin-top:2px}
.f-tip{font-size:12px;color:#9aa7bf;margin-top:10px}
.f-err{color:#c2333a;background:#fdf0f0;border:1px solid #f5c9cb;padding:9px 12px;border-radius:10px;font-size:13.5px;margin-top:12px}
.lead-ok{text-align:center;padding:34px 8px}
.lead-ok .ok-ico{font-size:40px;margin-bottom:8px}
.lead-ok b{font-size:18px;color:#11713c;display:block;margin-bottom:8px}
.lead-ok span{color:var(--mut);font-size:14.5px;display:block;line-height:1.9}
.lead-ok a{color:var(--c-main);font-weight:700}

/* 顶栏空间适配 + 留资响应式 */
@media (max-width:1499px){.hdr .actions .tel{display:none}}
@media (max-width:960px){
  .lead-wrap{grid-template-columns:1fr;gap:30px;padding:38px 30px}
  .lead-form{padding:26px 22px}
}
@media (max-width:640px){
  .hdr .actions{display:none}
  .lead-wrap{padding:34px 18px;border-radius:18px}
  .lead-form{padding:24px 18px}
  .f-row{grid-template-columns:1fr}
}
@media (max-width:360px){
  .bottom-bar .btn{font-size:13px;padding:12px 4px;white-space:nowrap}
  .hdr .container{gap:10px}
}

/* ========== AI 特色专区 ========== */
.ai-hero{
  position:relative;
  background:linear-gradient(135deg,#0f2f8a 0%,#0b5fff 50%,#12b0ff 100%);
  color:#fff;
  overflow:hidden;
}
.ai-hero::before{
  content:"";position:absolute;top:-120px;right:-80px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.18),transparent 70%);
}
.ai-hero::after{
  content:"";position:absolute;bottom:-100px;left:-60px;
  width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,176,255,.35),transparent 70%);
}
.ai-hero .container{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
}
.ai-hero h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;line-height:1.3;margin-bottom:14px}
.ai-hero h2 em{font-style:normal;color:#ffd666}
.ai-hero .ai-sub{font-size:17px;color:rgba(255,255,255,.88);margin-bottom:24px;max-width:540px}
.ai-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.ai-tags span{
  background:rgba(255,255,255,.15);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.25);
  padding:7px 16px;border-radius:999px;font-size:13.5px;font-weight:500;
}
.ai-list{display:grid;gap:14px;margin-top:20px}
.ai-list li{
  display:flex;align-items:flex-start;gap:14px;
  background:rgba(255,255,255,.1);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.18);border-radius:14px;
  padding:14px 18px;
}
.ai-list li .ico{
  width:40px;height:40px;border-radius:12px;flex:none;
  background:rgba(255,255,255,.2);
  display:flex;align-items:center;justify-content:center;font-size:20px;
}
.ai-list li b{display:block;font-size:15.5px;margin-bottom:3px}
.ai-list li span{font-size:13.5px;color:rgba(255,255,255,.8);line-height:1.55}
.ai-demo{
  background:#fff;border-radius:20px;padding:18px;
  box-shadow:0 30px 70px rgba(15,47,138,.25);
}
.ai-demo-header{
  display:flex;align-items:center;gap:10px;padding-bottom:12px;
  border-bottom:1px solid #eef3fc;
}
.ai-demo-avatar{
  width:38px;height:38px;border-radius:50%;
  background:linear-gradient(135deg,#0f2f8a,#12b0ff);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;
}
.ai-demo-header b{font-size:15px}
.ai-demo-header small{color:#8b99b0;font-size:12px;display:block}
.ai-demo-typing{display:inline-flex;gap:4px;padding:2px 0}
.ai-demo-typing i{
  width:6px;height:6px;border-radius:50%;background:#0b5fff;
  animation:typing 1.4s infinite ease-in-out;
}
.ai-demo-typing i:nth-child(2){animation-delay:.2s}
.ai-demo-typing i:nth-child(3){animation-delay:.4s}
@keyframes typing{
  0%,60%,100%{transform:translateY(0);opacity:.4}
  30%{transform:translateY(-6px);opacity:1}
}
.ai-demo-msgs{display:grid;gap:12px;padding:16px 4px 4px}
.ai-msg{
  display:flex;gap:10px;align-items:flex-start;
}
.ai-msg .m-ico{
  width:30px;height:30px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,#0f2f8a,#12b0ff);
  display:flex;align-items:center;justify-content:center;font-size:14px;color:#fff;
}
.ai-msg.user{justify-content:flex-end}
.ai-msg.user .m-ico{background:#14a05a;order:2}
.ai-msg .m-bubble{
  background:#f2f6ff;color:#182437;
  padding:10px 14px;border-radius:12px 12px 12px 4px;
  font-size:13.5px;line-height:1.55;max-width:260px;
}
.ai-msg.user .m-bubble{
  background:#14a05a;color:#fff;
  border-radius:12px 12px 4px 12px;
}
.ai-quick{
  display:flex;flex-wrap:wrap;gap:6px;
  padding:10px 4px 0;border-top:1px dashed #e5ecf7;margin-top:8px;
}
.ai-quick span{
  background:#f0f5ff;color:#0b5fff;font-size:12px;
  padding:5px 12px;border-radius:999px;cursor:pointer;
  transition:background .2s;
}
.ai-quick span:hover{background:#dbe7ff}

/* 首屏AI强调徽章 */
.hero-ai-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,#667eea,#764ba2);
  color:#fff;font-size:13px;font-weight:600;
  padding:8px 16px;border-radius:999px;
  margin-bottom:14px;box-shadow:0 4px 14px rgba(102,126,234,.35);
  animation:pulseGlow 2.5s ease-in-out infinite;
}
@keyframes pulseGlow{
  0%,100%{box-shadow:0 4px 14px rgba(102,126,234,.35)}
  50%{box-shadow:0 6px 22px rgba(102,126,234,.55)}
}

/* 价格卡片优化 */
.price-card.hot{
  transform:scale(1.04);
  border:2px solid #ffb300 !important;
  box-shadow:0 20px 50px rgba(255,179,0,.2) !important;
}
.price-card.hot .p-name{color:#cc8800 !important}
.price-card.hot .tag-hot{
  position:absolute;top:-1px;left:50%;transform:translateX(-50%);
  background:linear-gradient(135deg,#ff8a3d,#ff5e3a);
  color:#fff;font-size:12px;font-weight:700;
  padding:5px 18px;border-radius:0 0 14px 14px;
  letter-spacing:.5px;
}

/* 信任标志条 */
.trust-bar{
  background:#fff;border-bottom:1px solid var(--line);
  padding:18px 0;
}
.trust-bar .container{
  display:flex;align-items:center;justify-content:center;gap:48px;flex-wrap:wrap;
}
.trust-bar span{
  display:flex;align-items:center;gap:8px;
  font-size:13.5px;color:#5d6b84;font-weight:500;
}
.trust-bar b{color:#182437}

/* 数据条 */
.stats-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  margin-top:36px;
}
.stat-item{
  text-align:center;padding:18px 10px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  border-radius:14px;backdrop-filter:blur(8px);
}
.stat-item .num{
  font-size:32px;font-weight:800;line-height:1;
  background:linear-gradient(135deg,#fff,#ffd666);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-item .lab{font-size:12.5px;color:rgba(255,255,255,.8);margin-top:6px}

@media(max-width:900px){
  .ai-hero .container{grid-template-columns:1fr;gap:32px}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .trust-bar .container{gap:16px 24px;justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;padding:0 20px}
  .trust-bar span{white-space:nowrap;font-size:12.5px}
}