*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:#241a14;
  background-color:#fff8f3;
  background-image:
    radial-gradient(820px 480px at 90% -4%,rgba(255,122,47,.22),transparent 65%),
    radial-gradient(680px 420px at -8% 22%,rgba(255,90,31,.12),transparent 68%),
    radial-gradient(760px 520px at 55% 106%,rgba(255,150,80,.16),transparent 70%);
  background-attachment:fixed;
  background-repeat:no-repeat;
}
h1,h2,h3,h4{margin:0;line-height:1.32;color:#1e1410;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:#c84000;text-decoration:none}
img{max-width:100%}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:66px 0}
.sec-head{max-width:760px;margin:0 auto 40px;text-align:center}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.1em;color:#c84000;background:rgba(255,90,31,.12);padding:6px 16px;border-radius:999px;margin-bottom:14px}
.sec-head h2{font-size:clamp(23px,3.2vw,33px);margin-bottom:12px}
.sec-head p{color:#6b5a50;font-size:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:999px;font-size:16px;font-weight:800;border:0;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease}
.btn-primary{background:linear-gradient(135deg,#ff8a3d,#ff4d0d);color:#fff;box-shadow:0 12px 26px rgba(255,77,13,.32)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(255,77,13,.42)}
.btn-ghost{background:#fff;color:#c53a00;border:1.5px solid rgba(255,90,31,.4)}
.btn-ghost:hover{transform:translateY(-3px);border-color:#ff5a1f;box-shadow:0 12px 24px rgba(255,90,31,.18)}

/* header */
.site-header{position:sticky;top:0;z-index:200;background:rgba(255,250,246,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,90,31,.16)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px;position:relative}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand .ai-page-logo{height:36px;width:auto;display:block}
.brand-text{font-weight:800;font-size:17px;color:#1e1410;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:0;list-style:none;margin:0;padding:0}
.nav-links a{display:block;padding:9px 11px;font-size:14.5px;color:#4b392f;border-radius:9px;transition:color .2s ease,background .2s ease}
.nav-links a:hover{color:#d64500;background:rgba(255,90,31,.1)}
.nav-toggle{display:none;align-items:center;gap:6px;padding:8px 14px;font-size:14px;font-weight:800;color:#c84000;background:#fff;border:1px solid rgba(255,90,31,.35);border-radius:10px;cursor:pointer}
@media (max-width:980px){
  .nav-toggle{display:inline-flex}
  .nav-links{position:absolute;top:calc(100% + 1px);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:6px 0;background:#fffaf6;border:1px solid rgba(255,90,31,.18);border-radius:0 0 16px 16px;box-shadow:0 22px 44px rgba(140,60,20,.16);display:none;max-height:70vh;overflow-y:auto}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 20px;border-radius:0;border-bottom:1px solid rgba(255,90,31,.1);font-size:15px}
  .nav-links li:last-child a{border-bottom:0}
}

/* hero */
.hero{padding:58px 0 70px;position:relative;overflow:hidden}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:46px;align-items:center}
.hero h1{font-size:clamp(29px,4.4vw,45px);margin:0 0 18px;font-weight:900}
.hero h1 em{font-style:normal;color:#e03d00}
.hero-sub{color:#5c4a40;font-size:17px;max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px}
.hero-points li{font-size:14px;font-weight:700;color:#8a4a1e;background:#fff;border:1px solid rgba(255,90,31,.22);padding:7px 16px;border-radius:999px}
.hero-panel{position:relative;border-radius:22px;padding:22px;background:linear-gradient(150deg,rgba(255,138,61,.18),rgba(255,77,13,.06));border:1px solid rgba(255,90,31,.22)}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat{background:#fff;border-radius:14px;padding:18px 16px;box-shadow:0 8px 20px rgba(160,70,20,.08);transition:transform .3s ease,box-shadow .3s ease}
.stat:hover{transform:translateY(-4px);box-shadow:0 16px 30px rgba(160,70,20,.16)}
.stat b{display:block;font-size:26px;line-height:1.2;color:#e03d00;font-weight:900}
.stat span{display:block;font-size:13px;color:#6b5a50;margin-top:2px}
.hero-copy>*{animation:riseIn .75s both}
.hero-copy>*:nth-child(2){animation-delay:.08s}
.hero-copy>*:nth-child(3){animation-delay:.16s}
.hero-copy>*:nth-child(4){animation-delay:.24s}
.hero-copy>*:nth-child(5){animation-delay:.32s}
@keyframes riseIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero{padding:42px 0 54px}
}

/* generic cards */
.card{background:#fff;border:1px solid rgba(255,90,31,.14);border-radius:18px;padding:26px;box-shadow:0 6px 20px rgba(140,60,20,.06);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(160,70,20,.15);border-color:rgba(255,90,31,.34)}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:#665449;font-size:15px}

/* about */
.about-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:start}
.about-text p{color:#5c4a40;font-size:16px;margin-bottom:18px}
.ability-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:8px}
.ability-list li{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid rgba(255,90,31,.16);border-radius:12px;padding:12px 14px;font-size:14.5px;font-weight:700;color:#3d2c23;transition:transform .25s ease,border-color .25s ease}
.ability-list li:hover{transform:translateX(4px);border-color:rgba(255,90,31,.45)}
.ability-list li::before{content:"";width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#ff8a3d,#ff4d0d);flex:0 0 auto}
.about-media{border-radius:20px;overflow:hidden;border:1px solid rgba(255,90,31,.18);background:#fff;padding:12px;box-shadow:0 10px 28px rgba(160,70,20,.1)}
.about-media .ph{aspect-ratio:1/1;border-radius:14px;overflow:hidden;background:#fff3ea;display:flex;align-items:center;justify-content:center}
.about-media .ph img{width:100%;height:100%;object-fit:contain;display:block}
.about-media figcaption{font-size:13px;color:#7a6558;text-align:center;padding-top:10px}
@media (max-width:900px){
  .about-grid{grid-template-columns:1fr}
  .ability-list{grid-template-columns:1fr}
}

/* services */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
@media (max-width:960px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:680px){.grid-3,.grid-2{grid-template-columns:1fr}}
.svc-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:900;color:#fff;background:linear-gradient(135deg,#ff8a3d,#ff4d0d);margin-bottom:14px;box-shadow:0 8px 18px rgba(255,77,13,.26)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;margin-bottom:34px}
.step{background:#fff;border:1px solid rgba(255,90,31,.16);border-radius:16px;padding:20px 18px;position:relative;transition:transform .3s ease,box-shadow .3s ease}
.step:hover{transform:translateY(-6px);box-shadow:0 16px 34px rgba(160,70,20,.14)}
.step-no{display:inline-block;font-size:13px;font-weight:900;color:#e03d00;background:rgba(255,90,31,.12);border-radius:8px;padding:2px 10px;margin-bottom:10px}
.step h3{font-size:16px;margin-bottom:6px}
.step p{font-size:14px;color:#6b5a50}
@media (max-width:980px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.media-card{margin:0;background:#fff;border:1px solid rgba(255,90,31,.16);border-radius:18px;padding:12px;box-shadow:0 8px 22px rgba(160,70,20,.08)}
.media-card .ph{aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#fff3ea;display:flex;align-items:center;justify-content:center}
.media-card .ph img{width:100%;height:100%;object-fit:contain;display:block}
.media-card figcaption{font-size:13.5px;color:#7a6558;text-align:center;padding-top:10px}
@media (max-width:700px){.media-row{grid-template-columns:1fr}}

/* tag cloud */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.tag{padding:10px 20px;border-radius:999px;background:#fff;border:1px solid rgba(255,90,31,.24);color:#463329;font-size:15px;font-weight:700;transition:transform .25s ease,background .25s ease,color .25s ease,box-shadow .25s ease,border-color .25s ease}
.tag:hover{background:linear-gradient(135deg,#ff8a3d,#ff4d0d);color:#fff;border-color:transparent;transform:translateY(-3px);box-shadow:0 12px 24px rgba(255,77,13,.28)}

/* network */
.net-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.net-card{background:#fff;border:1px solid rgba(255,90,31,.16);border-radius:16px;padding:22px;border-top:4px solid #ff5a1f;transition:transform .3s ease,box-shadow .3s ease}
.net-card:hover{transform:translateY(-5px);box-shadow:0 16px 32px rgba(160,70,20,.13)}
.net-card h3{font-size:17px;margin-bottom:8px}
.net-card p{font-size:14.5px;color:#655246}
@media (max-width:980px){.net-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.net-grid{grid-template-columns:1fr}}

/* timeline */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:28px}
.timeline::before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,#ff8a3d,rgba(255,90,31,.15))}
.timeline li{position:relative;padding:0 0 24px 8px}
.timeline li::before{content:"";position:absolute;left:-27px;top:7px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid #ff5a1f;box-shadow:0 0 0 4px rgba(255,90,31,.14)}
.timeline li:last-child{padding-bottom:0}
.timeline h3{font-size:17px;margin-bottom:4px}
.timeline p{color:#665449;font-size:15px}

/* cases */
.case-card{background:#fff;border:1px solid rgba(255,90,31,.16);border-radius:18px;overflow:hidden;box-shadow:0 8px 22px rgba(160,70,20,.07);transition:transform .3s ease,box-shadow .3s ease}
.case-card:hover{transform:translateY(-6px);box-shadow:0 20px 42px rgba(160,70,20,.16)}
.case-card .ph{aspect-ratio:16/10;background:#fff3ea;display:flex;align-items:center;justify-content:center;overflow:hidden}
.case-card .ph img{width:100%;height:100%;object-fit:contain;display:block}
.case-body{padding:20px 22px 24px}
.case-body h3{font-size:17px;margin-bottom:8px}
.case-body p{font-size:14.5px;color:#665449}

/* compare */
.score-banner{display:flex;align-items:center;gap:26px;flex-wrap:wrap;justify-content:center;background:linear-gradient(135deg,#fff3ea,#ffe6d6);border:1px solid rgba(255,90,31,.3);border-radius:20px;padding:24px 30px;margin-bottom:30px}
.score-stars{font-size:26px;color:#ff5a1f;letter-spacing:4px}
.score-num{font-size:40px;font-weight:900;color:#e03d00;line-height:1}
.score-num span{font-size:16px;color:#8a4a1e;font-weight:700;margin-left:4px}
.score-banner p{font-size:15px;color:#7a3f18;font-weight:700}
.table-scroll{overflow-x:auto;border:1px solid rgba(255,90,31,.18);border-radius:16px;background:#fff;box-shadow:0 8px 22px rgba(160,70,20,.07)}
table{border-collapse:collapse;width:100%;min-width:660px;font-size:15px}
thead th{background:linear-gradient(135deg,#fff1e6,#ffe4d3);color:#7a3410;font-weight:800;text-align:left;padding:15px 18px;border-bottom:1px solid rgba(255,90,31,.24);white-space:nowrap}
tbody td{padding:14px 18px;border-bottom:1px solid rgba(255,90,31,.1);color:#4b392f;vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:#fffaf6}
td.hl{color:#c84000;font-weight:800;background:rgba(255,90,31,.05)}
th.hl{color:#c84000}
.table-note{font-size:13.5px;color:#82705f;margin-top:12px;text-align:center}

/* form */
.form-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:34px;align-items:start}
.form-intro{background:linear-gradient(150deg,#fff2e8,#ffe7d8);border:1px solid rgba(255,90,31,.24);border-radius:20px;padding:30px}
.form-intro h3{font-size:20px;margin-bottom:12px}
.form-intro p{color:#6b4a35;font-size:15px;margin-bottom:16px}
.form-intro ul li{font-size:14.5px;color:#7a3f18;font-weight:700;padding-left:20px;position:relative;margin-bottom:8px}
.form-intro ul li::before{content:"✓";position:absolute;left:0;color:#ff5a1f;font-weight:900}
.lead-form{background:#fff;border:1px solid rgba(255,90,31,.18);border-radius:20px;padding:30px;box-shadow:0 10px 28px rgba(160,70,20,.09)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:800;color:#3d2c23;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;font-size:15px;font-family:inherit;color:#241a14;background:#fffaf6;border:1px solid rgba(255,90,31,.26);border-radius:10px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;background:#fff;border-color:#ff5a1f;box-shadow:0 0 0 3px rgba(255,90,31,.14)}
.field textarea{min-height:110px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.lead-form .btn{width:100%;margin-top:6px}
@media (max-width:900px){.form-wrap{grid-template-columns:1fr}}
@media (max-width:600px){.form-row{grid-template-columns:1fr}}

/* faq */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid rgba(255,90,31,.18);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item.active{border-color:rgba(255,90,31,.5);box-shadow:0 12px 28px rgba(160,70,20,.12)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:14px;width:100%;padding:18px 22px;font-size:16px;font-weight:800;color:#2c1e16;background:none;border:0;text-align:left;cursor:pointer;font-family:inherit}
.faq-q::after{content:"+";font-size:22px;font-weight:700;color:#ff5a1f;line-height:1;flex:0 0 auto;transition:transform .25s ease}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 18px;font-size:15px;color:#655246}

/* reviews */
.review-card{background:#fff;border:1px solid rgba(255,90,31,.16);border-radius:18px;padding:24px;box-shadow:0 6px 20px rgba(140,60,20,.06);transition:transform .3s ease,box-shadow .3s ease}
.review-card:hover{transform:translateY(-6px);box-shadow:0 18px 36px rgba(160,70,20,.14)}
.review-stars{color:#ff5a1f;font-size:15px;letter-spacing:3px;margin-bottom:10px}
.review-card p{font-size:15px;color:#4b392f;margin-bottom:16px}
.review-user{display:flex;align-items:center;gap:10px}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#ff8a3d,#ff4d0d);color:#fff;font-weight:900;display:flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto}
.review-user b{display:block;font-size:14.5px;color:#241a14;line-height:1.3}
.review-user span{font-size:13px;color:#82705f}

/* articles */
.post-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.post{display:block;background:#fff;border:1px solid rgba(255,90,31,.16);border-radius:16px;padding:22px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.post:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(160,70,20,.14);border-color:rgba(255,90,31,.4)}
.post-tag{display:inline-block;font-size:12.5px;font-weight:800;color:#c84000;background:rgba(255,90,31,.12);padding:3px 10px;border-radius:999px;margin-bottom:10px}
.post h3{font-size:16.5px;color:#241a14;margin-bottom:10px}
.post-more{font-size:13.5px;font-weight:800;color:#e03d00}
@media (max-width:820px){.post-list{grid-template-columns:1fr}}

/* contact */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:start}
.contact-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed rgba(255,90,31,.22);font-size:15px}
.contact-list li:last-child{border-bottom:0}
.contact-list b{flex:0 0 96px;color:#3d2c23;font-weight:800}
.contact-list span{color:#5c4a40;word-break:break-all}
.qr-card{background:#fff;border:1px solid rgba(255,90,31,.2);border-radius:20px;padding:20px;text-align:center;box-shadow:0 10px 26px rgba(160,70,20,.09)}
.qr-card .ph{aspect-ratio:1/1;border-radius:14px;overflow:hidden;background:#fff3ea;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.qr-card .ph img{width:100%;height:100%;object-fit:contain;display:block}
.qr-card p{font-size:14px;color:#6b5a50;font-weight:700}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr}}

/* footer */
.site-footer{background:#1c1310;color:#e6dcd5;padding:44px 0 26px;margin-top:20px;position:relative}
.footer-top{display:grid;grid-template-columns:1fr 1.5fr;gap:32px;align-items:start;padding-bottom:26px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-brand .ai-page-logo{height:34px;width:auto;display:block}
.footer-brand b{color:#fff;font-size:17px}
.footer-desc{font-size:14px;color:#b8a79c;line-height:1.8}
.footer-links-title{font-size:14px;font-weight:800;color:#ffb37a;margin-bottom:12px}
.footer-links{display:flex;flex-wrap:wrap;gap:10px 18px}
.footer-links a{font-size:14px;color:#d6c6bc;transition:color .2s ease}
.footer-links a:hover{color:#ffb37a}
.footer-bottom{padding-top:20px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;font-size:13.5px;color:#a89a90}
.footer-bottom a{color:#d6c6bc}
.footer-bottom a:hover{color:#ffb37a}
@media (max-width:820px){.footer-top{grid-template-columns:1fr}}

/* floating */
.float-kefu{position:fixed;right:18px;bottom:90px;z-index:300;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.fk-btn{padding:12px 18px;border-radius:999px;border:0;cursor:pointer;font-size:14px;font-weight:800;font-family:inherit;color:#fff;background:linear-gradient(135deg,#ff8a3d,#ff4d0d);box-shadow:0 12px 26px rgba(255,77,13,.36);transition:transform .25s ease,box-shadow .25s ease}
.fk-btn:hover{transform:translateY(-3px);box-shadow:0 18px 32px rgba(255,77,13,.46)}
.fk-panel{display:none;width:222px;background:#fff;border:1px solid rgba(255,90,31,.26);border-radius:16px;padding:14px;box-shadow:0 20px 44px rgba(120,50,10,.22);text-align:center}
.fk-panel.show{display:block;animation:riseIn .3s both}
.fk-panel .ph{border-radius:10px;overflow:hidden;background:#fff3ea;margin-bottom:8px}
.fk-panel .ph img{display:block;width:100%;height:auto}
.fk-panel p{font-size:13px;color:#5c4a40;font-weight:700;line-height:1.6}
.to-top{position:fixed;right:18px;bottom:26px;z-index:300;width:46px;height:46px;border-radius:50%;border:0;background:#fff;color:#d64500;font-size:18px;font-weight:900;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(140,60,20,.22);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s ease,transform .3s ease,visibility .3s ease}
.to-top.show{opacity:1;visibility:visible;transform:none}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-copy>*{animation:none}
  html{scroll-behavior:auto}
}