:root{
  --yellow:#ffd21a;
  --yellow-2:#ffbf00;
  --ink:#111214;
  --muted:#68717d;
  --soft:#f5f6f7;
  --soft-2:#eef0f2;
  --line:rgba(17,18,20,.09);
  --card:#fff;
  --shadow:0 22px 70px rgba(25,30,40,.08);
  --shadow-sm:0 12px 36px rgba(25,30,40,.06);
  --radius:28px;
  --max:1440px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;color:var(--ink);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
::selection{background:var(--yellow);color:var(--ink)}
:focus-visible{outline:3px solid rgba(255,191,0,.72);outline-offset:3px}
.container{width:min(calc(100% - 72px),var(--max));margin:auto}
section[id]{scroll-margin-top:104px}

.section{position:relative;padding:112px 0;border-top:1px solid rgba(17,18,20,.035);background:linear-gradient(180deg,#fff 0%,#fbfcfd 100%)}
.section:nth-of-type(even){background:linear-gradient(180deg,#fbfcfd 0%,#fff 100%)}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:28px;min-height:82px}
.brand{font-size:29px;font-weight:950;letter-spacing:-1.2px;white-space:nowrap;display:inline-flex;align-items:center}
.brand .slash{display:inline-block;width:13px;height:5px;background:var(--yellow);transform:skew(-28deg);margin:0 9px 6px 1px}
.nav-links{display:flex;align-items:center;gap:30px;margin:auto;font-weight:700;font-size:15px}
.nav-links a{position:relative;padding:30px 0 27px}
.nav-links a::after{content:"";position:absolute;left:50%;right:50%;height:3px;bottom:16px;background:var(--yellow);border-radius:10px;transition:.25s}
.nav-links a:hover::after{left:12%;right:12%}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:54px;padding:0 28px;background:linear-gradient(135deg,var(--yellow),#ffd84a);border:1px solid rgba(255,183,0,.35);border-radius:999px;font-weight:900;box-shadow:0 12px 28px rgba(255,198,0,.18);transition:.25s;white-space:nowrap}
.btn:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(255,198,0,.26)}
.btn.secondary{background:#fff;border-color:var(--line);box-shadow:none}
.btn.secondary:hover{border-color:rgba(17,18,20,.22)}

.eyebrow{text-transform:uppercase;letter-spacing:5px;color:#99a1ad;font-weight:800;font-size:12px;margin:0 0 18px}
.section-head{text-align:center;max-width:940px;margin:0 auto 50px}
.section-head h2{font-size:58px;line-height:1.08;letter-spacing:-2.6px;margin:0 0 18px;font-weight:950}
.section-head p{font-size:19px;color:var(--muted);margin:0}
.mark{position:relative;display:inline-block;z-index:0}
.mark::after{content:"";position:absolute;left:4%;right:-2%;bottom:-4px;height:8px;background:var(--yellow);border-radius:100%;transform:rotate(-3deg) skew(-18deg);z-index:-1}
.card{background:var(--card);border:1px solid rgba(17,18,20,.06);box-shadow:var(--shadow-sm);border-radius:var(--radius)}

/* hero */
.hero{padding:76px 0 96px;background:radial-gradient(circle at 83% 12%,rgba(197,203,211,.34),transparent 34%),linear-gradient(115deg,#fff 42%,#f4f6f8 100%);border-top:0}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:56px}
.hero h1{font-size:clamp(40px,4.4vw,64px);line-height:1.06;letter-spacing:-3px;margin:0 0 26px;font-weight:950}
.hero .lead{font-size:19px;color:var(--muted);margin:0;max-width:620px}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:54px;max-width:720px}
.hero-stat{padding-right:20px;margin-right:20px;border-right:1px solid var(--line)}
.hero-stat:last-child{border:0;margin:0;padding:0}
.hero-stat strong{font-size:29px;display:block;line-height:1.2;letter-spacing:-.5px}
.hero-stat span{font-size:13px;color:var(--muted)}
.hero-visual{display:flex;align-items:center;justify-content:center}
.hero-visual img{width:min(640px,100%);border-radius:36px;mix-blend-mode:multiply;filter:saturate(.92) contrast(1.01)}

/* 02 solutions */
.biz-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.biz-card{padding:30px 24px 28px;min-height:240px;position:relative;overflow:hidden;transition:.3s}
.biz-card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.icon-pill{width:58px;height:58px;border-radius:18px;background:linear-gradient(145deg,#fff2a8,var(--yellow));display:flex;align-items:center;justify-content:center;margin-bottom:26px;box-shadow:inset 0 0 0 1px rgba(255,185,0,.12)}
.icon-pill svg{width:28px;height:28px;stroke:#111;fill:none;stroke-width:2}
.biz-card h3{font-size:25px;margin:0 0 9px}
.biz-card p{color:var(--muted);margin:0;font-size:15px}
.biz-card .num{position:absolute;right:18px;top:15px;font-size:12px;color:#a5acb5;font-weight:800}

/* 03 products */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.product-card{min-height:300px;padding:30px;display:grid;grid-template-columns:.92fr 1.08fr;align-items:center;gap:16px;overflow:hidden;transition:.35s}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.product-card .product-no{color:#d49e00;font-weight:900;font-size:12px}
.product-card h3{font-size:31px;margin:5px 0 10px}
.product-card p{color:var(--muted);font-size:15px;margin:0}
.product-card img{width:100%;height:230px;object-fit:cover;border-radius:22px;mix-blend-mode:multiply;transition:.35s}
.product-card:hover img{transform:scale(1.035)}

.table-wrap{margin-top:34px;overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-sm)}
table{width:100%;min-width:780px;border-collapse:collapse;font-size:15px}
caption{caption-side:top;text-align:left;padding:26px 28px 10px;font-weight:950;font-size:19px}
th,td{padding:16px 28px;text-align:left;vertical-align:top;border-top:1px solid var(--line)}
thead th{background:#fafbfc;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#5d6673;border-top:0}
tbody th{font-weight:900;white-space:nowrap}
td{color:var(--muted)}

/* 04 system */
.system-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
.system-primary{padding:48px;min-height:520px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(135deg,#fff 0%,#fff 68%,#fff8d9 100%)}
.system-primary .formula{font-size:84px;line-height:1;font-weight:950;letter-spacing:-5px}
.system-primary h3{font-size:32px;margin:18px 0 10px}
.system-primary p{max-width:600px;color:var(--muted);font-size:17px;margin:0}
.system-mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:34px}
.system-mini{padding:17px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.74);font-weight:800;font-size:14px;text-align:center}
.system-stack{display:grid;grid-template-rows:1fr 1fr;gap:20px}
.system-card{padding:40px;display:grid;grid-template-columns:130px 1fr;gap:28px;align-items:center}
.system-card .big{font-size:74px;font-weight:950;letter-spacing:-3px;color:#111}
.system-card .big span{color:var(--yellow-2)}
.system-card h3{font-size:26px;margin:0 0 8px}
.system-card p{margin:0;color:var(--muted)}
.chip-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.chip{padding:8px 12px;border-radius:999px;background:#f5f6f7;border:1px solid var(--line);font-size:12px;font-weight:800}

/* 05 lab */
.lab-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:24px;align-items:stretch}
.lab-intro{padding:48px;background:linear-gradient(155deg,#fff 0%,#fff 70%,#fff5bf 100%)}
.lab-intro .big{font-size:92px;line-height:1;font-weight:950;letter-spacing:-5px}
.lab-intro h3{font-size:32px;margin:18px 0 10px}
.lab-intro p{color:var(--muted);font-size:17px}
.lab-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.lab-item{padding:26px;display:flex;align-items:center;gap:18px;transition:.25s}
.lab-item:hover{transform:translateX(5px);border-color:rgba(255,197,0,.4)}
.lab-item .mini-icon{flex:none;width:48px;height:48px;border-radius:16px;background:#fff3aa;display:flex;align-items:center;justify-content:center;font-weight:950}
.lab-item h4{font-size:20px;margin:0 0 3px}
.lab-item p{margin:0;color:var(--muted);font-size:14px}

/* 06 platform */
.platform-map{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-areas:"tb dy jd" "wx hub xhs";gap:18px;max-width:1000px;margin:0 auto;padding:26px 0 8px}
.platform-node{min-height:146px;border-radius:26px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center}
.platform-node b{font-size:16px}
.platform-node.tb{grid-area:tb}
.platform-node.wx{grid-area:wx}
.platform-node.dy{grid-area:dy}
.platform-node.jd{grid-area:jd}
.platform-node.xhs{grid-area:xhs}
.platform-node .logo{width:52px;height:52px;border-radius:16px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:950;font-size:22px}
.logo.tb{background:#ff6a00}
.logo.wx{background:#22bf58}
.logo.dy{background:#111}
.logo.jd{background:#e1251b}
.logo.xhs{background:#ff2442}
.hub{grid-area:hub;min-height:146px;border-radius:26px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#111214;color:#fff;box-shadow:var(--shadow)}
.hub strong{font-size:30px;letter-spacing:-1px}
.hub span{font-size:13px;color:#c8ccd2;margin-top:4px}
.platform-benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.benefit{padding:25px 28px}
.benefit h4{font-size:20px;margin:0 0 5px}
.benefit p{margin:0;color:var(--muted);font-size:14px}

/* 07 cases */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.case-card{overflow:hidden;transition:.3s}
.case-card:hover{transform:translateY(-7px);box-shadow:var(--shadow)}
.case-image{height:290px;background:#f5f6f7;overflow:hidden}
.case-image img{width:100%;height:100%;object-fit:cover;transition:.4s}
.case-card:hover .case-image img{transform:scale(1.035)}
.case-copy{padding:24px}
.case-copy .meta{font-size:12px;color:#9aa1ab;font-weight:800}
.case-copy h3{font-size:26px;margin:4px 0 6px}
.case-copy strong{font-size:14px}
.case-copy p{color:var(--muted);font-size:14px;margin:8px 0 0}
.section-cta{text-align:center;margin-top:38px}

/* 08 process */
.process-list{list-style:none;display:grid;grid-template-columns:repeat(6,1fr);position:relative;gap:12px;margin:36px 0 0;padding:0}
.process-list::before{content:"";position:absolute;top:39px;left:7%;right:7%;height:1px;background:linear-gradient(90deg,rgba(255,210,26,.15),var(--yellow),rgba(255,210,26,.15))}
.process-step{position:relative;text-align:center}
.step-dot{position:relative;z-index:2;margin:0 auto 22px;width:78px;height:78px;border-radius:50%;background:var(--yellow);border:9px solid #fff;box-shadow:0 0 0 1px rgba(255,190,0,.15),0 10px 25px rgba(255,201,0,.18);display:flex;align-items:center;justify-content:center;font-weight:950}
.process-step h3{font-size:19px;margin:0 0 6px}
.process-step p{color:var(--muted);font-size:13px;margin:0 auto;max-width:180px}

/* 09 strength */
.strength-stats{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.strength-stat{padding:27px 18px;text-align:center}
.strength-stat strong{font-size:35px;display:block;letter-spacing:-1px}
.strength-stat span{color:var(--muted);font-size:13px}
.strength-media{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}
.media-card{padding:32px;overflow:hidden}
.media-card h3{font-size:27px;margin:0 0 8px}
.media-card p{color:var(--muted);max-width:560px;margin:0}
.media-card img{margin-top:22px;width:100%;height:220px;object-fit:cover;border-radius:20px;border:1px solid var(--line)}

/* 10 faq */
.faq-list{max-width:920px;margin:0 auto;display:grid;gap:14px;padding:0;list-style:none}
.faq-item{padding:26px 32px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow-sm)}
.faq-item h3{font-size:20px;margin:0 0 10px;line-height:1.4}
.faq-item p{margin:0;color:var(--muted);font-size:15px}

/* 11 contact */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch}
.contact-panel{padding:42px}
.contact-panel h3{font-size:30px;margin:0 0 22px}
.contact-points{display:grid;gap:0}
.contact-point{padding:18px 0;border-bottom:1px solid var(--line)}
.contact-point:last-child{border:0}
.contact-point strong{display:block;font-size:19px}
.contact-point span{color:var(--muted);font-size:14px}
.qr-panel{padding:42px;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(155deg,#fff 0%,#fff 72%,#fff6c9 100%)}
.qr-panel h3{margin:0 0 8px}
.qr-panel p{color:var(--muted);font-size:14px;margin:0 0 24px}
.qr-panel img{width:min(260px,100%);border-radius:16px;border:1px solid var(--line);background:#fff}
.qr-note{margin-top:16px;font-size:12px;color:#9aa1ab}

/* footer */
.footer{padding:56px 0 40px;border-top:1px solid var(--line);background:#f7f8f9}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:30px}
.footer p{color:var(--muted);font-size:13px;margin:10px 0}
.footer-links{display:flex;justify-content:flex-end;gap:22px;font-size:13px;font-weight:750;flex-wrap:wrap;align-content:flex-start}
.footer-links a:hover{text-decoration:underline}
.footer-beian{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:10px;font-size:13px;color:var(--muted)}
.footer-beian a{color:inherit}
.footer-beian a:hover{text-decoration:underline}
.footer-beian[hidden]{display:none}

@media(max-width:1180px){
  .container{width:min(calc(100% - 40px),var(--max))}
  .nav-links{gap:18px}
  .biz-grid{grid-template-columns:repeat(3,1fr)}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .strength-stats{grid-template-columns:repeat(3,1fr)}
  .process-list{grid-template-columns:repeat(3,1fr);row-gap:40px}
  .process-list::before{display:none}
}

@media(max-width:900px){
  .nav{flex-wrap:wrap;gap:12px;padding:14px 0}
  .nav-links{order:3;width:100%;margin:0;gap:22px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}
  .nav-links::-webkit-scrollbar{display:none}
  .nav-links a{padding:6px 0;white-space:nowrap}
  .nav-links a::after{bottom:-2px}
  .nav>.btn{margin-left:auto;min-height:44px;padding:0 18px;font-size:14px}
  .brand{font-size:24px}
  .section{padding:84px 0}
  .section-head{margin-bottom:34px}
  .section-head h2{font-size:42px;letter-spacing:-2px}
  .section-head p{font-size:17px}
  .eyebrow{letter-spacing:3px}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:2}
  .hero-visual img{max-height:520px;object-fit:contain}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px}
  .hero-stat{border:0;margin:0;padding:0}
  .biz-grid{grid-template-columns:1fr 1fr}
  .product-grid{grid-template-columns:1fr}
  .system-layout,.lab-wrap,.contact-grid,.strength-media{grid-template-columns:1fr}
  .system-stack{grid-template-rows:auto}
  .system-primary{min-height:440px}
  .platform-benefits{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr 1fr}
  .process-list{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-links{justify-content:flex-start}
}

@media(max-width:640px){
  .platform-map{grid-template-columns:1fr 1fr;grid-template-areas:"hub hub" "tb dy" "jd wx" "xhs xhs"}
}

@media(max-width:560px){
  .container{width:min(calc(100% - 28px),var(--max))}
  .section{padding:70px 0}
  .section-head h2{font-size:34px}
  .hero h1{font-size:38px;letter-spacing:-2px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-stats{margin-top:36px}
  .biz-grid{grid-template-columns:1fr}
  .product-card{grid-template-columns:1fr;min-height:auto}
  .product-card img{height:210px}
  .system-primary{padding:28px}
  .system-primary .formula{font-size:58px}
  .system-card{grid-template-columns:1fr;padding:28px}
  .lab-intro{padding:30px}
  .lab-intro .big{font-size:70px}
  .lab-list{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .process-list{grid-template-columns:1fr}
  .strength-stats{grid-template-columns:1fr 1fr}
  .contact-panel,.qr-panel{padding:28px}
  .faq-item{padding:22px}
  .footer{padding:42px 0}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}