/* ============================================================
   苏州艾比利特智能科技有限公司 · 企业官网样式
   Suzhou Ability Intelligent Technology Co., Ltd.
   品牌色：#009030（取自 Logo 绿色）
   ============================================================ */
:root{
  --primary:#009030;
  --primary-dark:#006e24;
  --primary-deep:#0b2413;
  --primary-soft:#e7f6ec;
  --accent:#00c853;
  --accent-2:#b8ffd2;
  /* 宇宙深空色系：深奥、责任与向往 */
  --cosmic-deep:#070b26;
  --cosmic-mid:#0c2f5c;
  --cosmic-navy:#101b4a;
  --aurora-green:#7dffb0;
  --aurora-cyan:#45e0ff;
  --aurora-violet:#a78bfa;
  --aurora-gold:#f5b942;
  --bg:#ffffff;
  --bg-soft:#f4f7fb;
  --text:#18211a;
  --text-light:#5c6b60;
  --border:#dce9df;
  --white:#ffffff;
  --shadow:0 10px 30px rgba(0,60,120,.10);
  --shadow-lg:0 20px 50px rgba(10,30,90,.18);
  --radius:16px;
  --maxw:1200px;
  --font:"PingFang SC","Microsoft YaHei","Segoe UI","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.75;font-size:16px;overflow-x:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ---------- 通用 ---------- */
.section{padding:96px 0;}
.section-head{max-width:760px;margin:0 auto 56px;text-align:center;}
.tag{display:inline-block;color:var(--primary);font-weight:700;letter-spacing:3px;font-size:13px;text-transform:uppercase;margin-bottom:12px;}
.tag::before,.tag::after{content:"—";margin:0 8px;opacity:.6;}
.section-head h2{font-size:36px;line-height:1.3;margin-bottom:14px;font-weight:800;}
.section-head p{color:var(--text-light);font-size:16px;}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease;}
.reveal.on{opacity:1;transform:none;}

/* ---------- 头部导航 ---------- */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;transition:background .3s,box-shadow .3s;background:transparent;}
.header.scrolled{background:rgba(255,255,255,.97);box-shadow:0 2px 20px rgba(0,40,15,.08);}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand img{height:42px;width:auto;}
.brand-txt{display:flex;flex-direction:column;line-height:1.15;}
.brand-txt b{font-size:19px;color:#fff;transition:color .3s;}
.brand-txt small{font-size:10.5px;letter-spacing:1.5px;color:rgba(255,255,255,.75);text-transform:uppercase;transition:color .3s;}
.header.scrolled .brand-txt b{color:var(--text);}
.header.scrolled .brand-txt small{color:var(--text-light);}
.nav-list{display:flex;align-items:center;gap:34px;}
.nav-list a{font-size:15.5px;color:#fff;position:relative;padding:6px 0;transition:color .3s;font-weight:500;}
.nav-list a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent);transition:width .3s;}
.nav-list a:hover::after,.nav-list a.active::after{width:100%;}
.header.scrolled .nav-list a{color:var(--text);}
.nav-list a:hover,.nav-list a.active{color:var(--accent);}
.header.scrolled .nav-list a:hover,.header.scrolled .nav-list a.active{color:var(--primary);}
.nav-right{display:flex;align-items:center;gap:18px;}
.lang-btn{border:1px solid rgba(255,255,255,.55);background:transparent;color:#fff;padding:7px 16px;border-radius:999px;font-size:13.5px;font-weight:600;transition:all .3s;}
.lang-btn:hover{background:rgba(255,255,255,.16);}
.header.scrolled .lang-btn{border-color:var(--primary);color:var(--primary);}
.header.scrolled .lang-btn:hover{background:var(--primary-soft);}
.nav-cta{display:inline-block;background:var(--accent);color:#fff;padding:10px 22px;border-radius:8px;font-size:14.5px;font-weight:600;transition:background .3s;}
.nav-cta:hover{background:var(--primary);}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:6px;}
.hamburger span{width:26px;height:2.5px;background:#fff;border-radius:2px;transition:all .3s;}
.header.scrolled .hamburger span{background:var(--text);}
.hamburger.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg);}
.hamburger.open span:nth-child(2){opacity:0;}
.hamburger.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg);}

/* ---------- Hero 全屏品牌视觉 ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;color:#fff;overflow:hidden;}
.hero-bg{position:absolute;inset:0;background:url("../images/hero.jpg") center/cover no-repeat;}
.hero-bg::before{content:"";position:absolute;inset:0;z-index:1;
  background-image:
    radial-gradient(1.6px 1.6px at 18% 22%,rgba(255,255,255,.9),transparent),
    radial-gradient(1px 1px at 42% 12%,rgba(255,255,255,.7),transparent),
    radial-gradient(1.6px 1.6px at 68% 28%,rgba(180,215,255,.85),transparent),
    radial-gradient(1px 1px at 86% 10%,rgba(255,255,255,.6),transparent),
    radial-gradient(1px 1px at 9% 58%,rgba(255,255,255,.55),transparent),
    radial-gradient(1.6px 1.6px at 30% 72%,rgba(170,220,255,.6),transparent),
    radial-gradient(1px 1px at 58% 52%,rgba(255,255,255,.5),transparent),
    radial-gradient(1.6px 1.6px at 88% 62%,rgba(190,225,255,.7),transparent),
    radial-gradient(1px 1px at 52% 88%,rgba(255,255,255,.5),transparent),
    radial-gradient(1px 1px at 14% 90%,rgba(255,255,255,.45),transparent);
  opacity:.7;animation:twinkle 6s ease-in-out infinite alternate;}
@keyframes twinkle{0%{opacity:.5;}100%{opacity:1;}}
.hero-bg::after{content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(112deg,rgba(5,9,30,.94) 0%,rgba(10,28,60,.86) 30%,rgba(8,60,44,.74) 58%,rgba(16,34,86,.60) 82%,rgba(24,18,64,.55) 100%);}
.hero-inner{position:relative;z-index:3;max-width:760px;padding:120px 0 80px;}
.hero-eyebrow{display:flex;align-items:center;gap:12px;font-size:14px;letter-spacing:3px;text-transform:uppercase;color:var(--aurora-green);margin-bottom:20px;font-weight:600;}
.hero-eyebrow::before{content:"";width:42px;height:2px;background:linear-gradient(90deg,var(--accent),var(--aurora-cyan));}
.hero h1{font-size:54px;line-height:1.18;font-weight:800;margin-bottom:22px;letter-spacing:.5px;}
.hero h1 .g{background:linear-gradient(92deg,#7dffb0 0%,#45e0ff 55%,#a78bfa 100%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:18px;color:rgba(255,255,255,.9);max-width:640px;margin-bottom:36px;}
.hero-btns{display:flex;gap:18px;flex-wrap:wrap;}
.btn{display:inline-flex;align-items:center;gap:8px;padding:15px 34px;border-radius:10px;font-size:16px;font-weight:600;transition:all .3s;border:2px solid transparent;}
.btn-solid{background:linear-gradient(120deg,#00b34a,#009030);color:#fff;}
.btn-solid:hover{background:linear-gradient(120deg,#0a8a3c,#006e24);transform:translateY(-3px);box-shadow:0 14px 34px rgba(0,180,90,.35);}
.btn-ghost{border-color:rgba(255,255,255,.75);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-3px);}
.hero-scroll{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:2;color:rgba(255,255,255,.8);font-size:13px;letter-spacing:2px;text-align:center;animation:floatY 2s ease-in-out infinite;}
.hero-scroll svg{display:block;margin:4px auto 0;animation:none;}
@keyframes floatY{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,10px);}}

/* ---------- 数据条 ---------- */
.stats{background:var(--bg);border-bottom:1px solid var(--border);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:44px 0;}
.stat{text-align:center;padding:18px 10px;}
.stat b{display:block;font-size:46px;font-weight:800;line-height:1.1;background:linear-gradient(120deg,#008a2e 0%,#00a86b 55%,#1b8fd6 100%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat span{display:block;color:var(--text-light);font-size:15px;margin-top:6px;}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center;}
.about-left .section-head{text-align:left;margin:0 0 24px;}
.about-left .section-head h2{font-size:34px;}
.about-left p{color:var(--text-light);margin-bottom:18px;font-size:16px;}
.highlights{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px;}
.hl{display:inline-flex;align-items:center;gap:8px;background:var(--primary-soft);color:var(--primary-dark);font-size:14px;font-weight:600;padding:9px 18px;border-radius:999px;}
.hl svg{width:16px;height:16px;flex:none;}
.cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:6px 0 4px;}
.cap-card{background:linear-gradient(150deg,#f3fbf6,#eef6fb);border:1px solid var(--border);border-radius:14px;padding:20px 20px 18px;}
.cap-ico{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#0e8f9e);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}
.cap-ico svg{width:22px;height:22px;}
.cap-card h4{font-size:16.5px;font-weight:800;margin-bottom:8px;}
.cap-card p{font-size:13.5px;color:var(--text-light);line-height:1.65;margin:0;}
.about-card{background:linear-gradient(160deg,#0b6e2c,#009030 48%,#0e8f9e 100%);border-radius:var(--radius);color:#fff;padding:40px 34px;box-shadow:var(--shadow-lg);position:relative;overflow:hidden;}
.about-card::before{content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.10);}
.about-card h3{font-size:22px;margin-bottom:8px;font-weight:800;}
.about-card .year{font-size:56px;font-weight:800;line-height:1;color:var(--accent-2);}
.about-card .cap{font-size:15px;opacity:.95;}
.about-card .divider{height:1px;background:rgba(255,255,255,.25);margin:20px 0;}
.about-card .row{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.about-card .row svg{width:22px;height:22px;flex:none;color:var(--accent-2);}
.about-card .row span{font-size:15px;}

/* ---------- 核心业务 ---------- */
.business{background:var(--bg-soft);}
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.biz-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .35s,box-shadow .35s;display:flex;flex-direction:column;}
.biz-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);}
.biz-img{position:relative;overflow:hidden;aspect-ratio:4/3;}
.biz-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;}
.biz-card:hover .biz-img img{transform:scale(1.08);}
.biz-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(8,50,22,.35));}
.biz-body{padding:24px 22px 26px;display:flex;flex-direction:column;flex:1;}
.biz-body h3{font-size:19px;margin-bottom:10px;font-weight:800;line-height:1.4;}
.biz-body p{color:var(--text-light);font-size:14.5px;flex:1;}
.biz-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.chip{background:var(--primary-soft);color:var(--primary-dark);font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:999px;}

/* ---------- 行业应用带 ---------- */
.industries{background:linear-gradient(120deg,#070b26 0%,#0c2f5c 34%,#0b5e3a 70%,#009030 105%);color:#fff;padding:72px 0;overflow:hidden;position:relative;}
.industries::before{content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 20%,rgba(255,255,255,.8),transparent),
    radial-gradient(1px 1px at 35% 40%,rgba(180,215,255,.6),transparent),
    radial-gradient(1.4px 1.4px at 62% 15%,rgba(255,255,255,.7),transparent),
    radial-gradient(1px 1px at 82% 35%,rgba(190,225,255,.65),transparent),
    radial-gradient(1px 1px at 25% 75%,rgba(255,255,255,.5),transparent),
    radial-gradient(1.4px 1.4px at 70% 80%,rgba(170,220,255,.6),transparent),
    radial-gradient(1px 1px at 90% 60%,rgba(255,255,255,.5),transparent);
  opacity:.6;}
.industries .container{position:relative;z-index:1;}
.ind-head{text-align:center;margin-bottom:36px;}
.ind-head h2{font-size:32px;font-weight:800;margin-bottom:8px;}
.ind-head p{color:rgba(255,255,255,.75);}
.ind-track{display:flex;gap:14px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);}
.ind-inner{display:flex;gap:14px;flex:none;animation:marquee 30s linear infinite;}
.ind-chip{flex:none;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:10px 22px;border-radius:999px;font-size:15px;font-weight:500;white-space:nowrap;}
.ind-tech{margin-top:46px;}
.ind-logic{max-width:900px;margin:0 auto 32px;text-align:center;color:rgba(255,255,255,.92);font-size:15.5px;line-height:1.9;}
.ind-tech-block{margin-bottom:24px;}
.ind-tech-block h4{color:#fff;font-size:15px;font-weight:700;letter-spacing:2px;text-align:center;margin-bottom:16px;}
.ind-tech-block h4::after{content:"";display:block;width:44px;height:2px;margin:10px auto 0;background:linear-gradient(90deg,var(--accent),var(--aurora-cyan));}
.ind-algo-line{max-width:920px;margin:0 auto;text-align:center;color:rgba(255,255,255,.92);font-size:15px;line-height:2;letter-spacing:.5px;}
.ind-algo-line.base{color:#dff6ff;}
@media (max-width:768px){.ind-algo-line{font-size:14px;line-height:1.9;}}
@keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* ---------- 案例 ---------- */
.cases-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.case-card{background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden;transition:transform .3s,box-shadow .3s;}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.case-img{aspect-ratio:3/2;overflow:hidden;}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.case-card:hover .case-img img{transform:scale(1.06);}
.case-body{padding:18px 18px 20px;}
.case-tag{display:inline-block;background:var(--primary-soft);color:var(--primary);font-size:12px;font-weight:700;letter-spacing:1px;padding:4px 12px;border-radius:999px;margin-bottom:9px;}
.case-body h3{font-size:16.5px;font-weight:700;margin-bottom:6px;line-height:1.45;}
.case-body p{font-size:13.5px;color:var(--text-light);line-height:1.6;}

/* ---------- 信任背书 / 为什么选择 ---------- */
.trust{background:var(--bg-soft);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.trust-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px 26px;text-align:center;transition:transform .3s,box-shadow .3s;}
.trust-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.trust-ico{width:64px;height:64px;margin:0 auto 18px;border-radius:16px;display:flex;align-items:center;justify-content:center;transition:transform .3s,box-shadow .3s;}
.trust-card:hover .trust-ico{transform:translateY(-4px);}
.trust-ico.c-green{background:var(--primary-soft);color:var(--primary);}
.trust-ico.c-violet{background:#efeaff;color:#7c5cff;}
.trust-ico.c-cyan{background:#e6fbff;color:#0aa6c9;}
.trust-ico.c-gold{background:#fff5e0;color:#e0a019;}
.trust-ico svg{width:32px;height:32px;}
.trust-card h3{font-size:18px;margin-bottom:8px;font-weight:800;}
.trust-card p{color:var(--text-light);font-size:14px;}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:start;}
.contact-item{display:flex;gap:18px;margin-bottom:26px;align-items:flex-start;}
.contact-ico{flex:none;width:52px;height:52px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;}
.contact-ico svg{width:26px;height:26px;}
.contact-item h4{font-size:14px;color:var(--text-light);font-weight:600;margin-bottom:2px;}
.contact-item p{font-size:17px;font-weight:600;word-break:break-all;}
.contact-item p a:hover{color:var(--primary);}
.contact-form{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow);}
.contact-form h3{font-size:22px;font-weight:800;margin-bottom:20px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-group{margin-bottom:16px;}
.form-group label{display:block;font-size:13.5px;font-weight:600;color:var(--text);margin-bottom:6px;}
.form-group input,.form-group textarea{width:100%;padding:13px 16px;border:1.5px solid var(--border);border-radius:10px;font-size:15px;font-family:inherit;transition:border-color .3s,box-shadow .3s;color:var(--text);background:#fbfdfb;}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,144,48,.12);}
.form-group textarea{resize:vertical;min-height:110px;}
.form-submit{width:100%;padding:15px;background:var(--primary);color:#fff;border:none;border-radius:10px;font-size:16px;font-weight:700;transition:background .3s,transform .3s;}
.form-submit:hover{background:var(--primary-dark);transform:translateY(-2px);}
.form-note{font-size:12.5px;color:var(--text-light);margin-top:12px;text-align:center;line-height:1.6;}

/* ---------- 页脚 ---------- */
.footer{background:#05081c;color:#a9c4b0;padding:70px 0 0;position:relative;overflow:hidden;}
.footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--aurora-cyan),var(--aurora-violet),var(--primary));}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:48px;padding-bottom:44px;}
.footer h4{color:#fff;font-size:17px;margin-bottom:18px;font-weight:700;}
.footer .f-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer .f-brand img{height:40px;}
.footer .f-brand b{color:#fff;font-size:18px;}
.footer p{font-size:14.5px;line-height:1.8;}
.footer ul li{margin-bottom:10px;}
.footer ul a{font-size:14.5px;transition:color .3s,padding-left .3s;}
.footer ul a:hover{color:var(--accent);padding-left:4px;}
.footer .f-contact li{display:flex;gap:10px;align-items:flex-start;}
.footer .f-contact svg{width:18px;height:18px;flex:none;margin-top:3px;color:var(--accent);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;text-align:center;font-size:13px;color:#7fa08a;}
.footer-bottom a{color:inherit;}

/* ---------- 移动端菜单 ---------- */
@media(max-width:1024px){
  .nav-list{position:fixed;top:0;right:-320px;width:300px;height:100vh;background:#fff;flex-direction:column;align-items:flex-start;gap:0;padding:96px 36px 30px;box-shadow:-20px 0 60px rgba(0,0,0,.18);transition:right .35s ease;z-index:999;}
  .nav-list.open{right:0;}
  .nav-list a{color:var(--text) !important;font-size:18px;padding:15px 0;width:100%;border-bottom:1px solid var(--border);}
  .nav-list a::after{display:none;}
  .hamburger{display:flex;z-index:1001;}
  .nav-right .nav-cta{display:none;}
  .lang-btn{position:relative;z-index:1001;}
  .biz-grid{grid-template-columns:repeat(2,1fr);}
  .cases-grid{grid-template-columns:repeat(3,1fr);}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .hero h1{font-size:44px;}
}
@media(max-width:768px){
  .section{padding:72px 0;}
  .about-grid{grid-template-columns:1fr;gap:40px;}
  .contact-grid{grid-template-columns:1fr;gap:40px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .biz-grid{grid-template-columns:1fr;}
  .cases-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:34px;}
  .hero-sub{font-size:16px;}
  .hero-inner{padding:110px 0 70px;}
  .section-head h2{font-size:28px;}
  .form-row{grid-template-columns:1fr;}
}
@media(max-width:520px){
  .cases-grid{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .brand-txt small{display:none;}
  .hero h1{font-size:29px;}
}