/* ============ TOKENS ============ */
:root{
  --bg:#ffffff;
  --bg-soft:#f4f7fb;
  --bg-dark:#04204a;
  --bg-dark-2:#0a2c5e;
  --primary:#0060d8;          /* TOXXUN logo blue */
  --primary-600:#0051b7;
  --primary-700:#003a87;
  --primary-soft:#e6f0ff;
  --accent:#2a8aff;            /* bright blue for CTAs/highlights */
  --accent-2:#ff8a3d;          /* warm amber accent */
  --text:#15233a;
  --text-soft:#5a6b7b;
  --border:#e3e9f0;
  --radius:16px;
  --shadow:0 18px 50px -20px rgba(0,96,216,.30);
  --shadow-sm:0 8px 24px -14px rgba(0,96,216,.25);
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 28px;border-radius:999px;font-weight:600;font-size:15px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s;cursor:pointer;border:none;
}
.btn--primary{background:linear-gradient(135deg,var(--accent),var(--primary));color:#fff;box-shadow:0 12px 26px -12px rgba(0,96,216,.55)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 18px 32px -12px rgba(0,96,216,.7)}
.btn--ghost{border:1.5px solid rgba(255,255,255,.55);color:#fff;background:transparent}
.btn--ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn--block{width:100%}

/* ============ NAVBAR ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .3s,box-shadow .3s,padding .3s;
  padding:14px 0;
}
.nav.is-scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);box-shadow:0 6px 24px -16px rgba(0,0,0,.4);padding:8px 0}
.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{display:inline-flex}
.brand__text{font-weight:800;font-size:20px;letter-spacing:.5px;color:#fff;line-height:1;display:flex;flex-direction:column}
.brand__text small{font-size:10px;font-weight:600;letter-spacing:3px;opacity:.7;margin-top:3px}
.nav.is-scrolled .brand__text{color:var(--primary)}
.nav__links{display:flex;align-items:center;gap:30px}
.nav__links a{color:rgba(255,255,255,.9);font-size:15px;font-weight:500;transition:color .2s;position:relative}
.nav.is-scrolled .nav__links a{color:var(--text-soft)}
.nav__links a:not(.nav__cta)::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--accent);transition:width .25s}
.nav__links a:not(.nav__cta):hover::after{width:100%}
.nav__links a:hover{color:var(--accent)}
.nav__cta{background:var(--accent-2);color:#fff!important;padding:9px 20px;border-radius:999px;font-weight:600;transition:transform .2s,box-shadow .2s}
.nav__cta:hover{transform:translateY(-2px);box-shadow:0 10px 22px -10px rgba(255,138,61,.9)}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav__toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.nav.is-scrolled .nav__toggle span{background:var(--primary)}

/* ============ HERO ============ */
.hero{position:relative;background:radial-gradient(1200px 700px at 75% -10%,#0a3a7a 0%,#04204a 55%,#021434 100%);color:#fff;padding:150px 0 110px;overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__grid{position:absolute;inset:0;width:100%;height:100%}
.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55}
.orb--1{width:340px;height:340px;background:var(--accent);top:-60px;right:8%}
.orb--2{width:300px;height:300px;background:var(--primary);bottom:-80px;left:4%}
.orb--3{width:220px;height:220px;background:var(--accent-2);top:40%;left:42%;opacity:.4}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.eyebrow{font-size:13px;letter-spacing:3px;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:14px}
.eyebrow--dark{color:var(--primary)}
.hero__title{font-size:clamp(34px,5.4vw,60px);line-height:1.12;font-weight:800;letter-spacing:1px;margin-bottom:14px}
.hero__sub{font-size:clamp(18px,2.4vw,24px);font-weight:600;color:#cfe6f3;margin-bottom:18px}
.hero__desc{font-size:16px;color:rgba(255,255,255,.82);max-width:520px;margin-bottom:28px}
.hero__desc strong{color:#fff;font-weight:700}
.hero__actions{display:flex;gap:14px;margin-bottom:26px;flex-wrap:wrap}
.hero__tags{display:flex;flex-wrap:wrap;gap:10px}
.hero__tags span{font-size:12.5px;padding:6px 13px;border:1px solid rgba(255,255,255,.22);border-radius:999px;color:rgba(255,255,255,.85);background:rgba(255,255,255,.05)}
.hero__scroll{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);font-size:30px;color:rgba(255,255,255,.6);z-index:3;animation:bob 1.8s infinite}
@keyframes bob{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}

/* Dashboard mockup */
.hero__visual{display:flex;justify-content:center}
.dash{width:100%;max-width:440px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:18px;backdrop-filter:blur(10px);box-shadow:0 30px 60px -30px rgba(0,0,0,.7)}
.dash__head{display:flex;align-items:center;gap:7px;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:14px}
.dash__head .dot{width:9px;height:9px;border-radius:50%;background:#ff5f57}
.dash__head .dot:nth-child(2){background:#febc2e}
.dash__head .dot:nth-child(3){background:#28c840}
.dash__head em{margin-left:8px;font-style:normal;font-size:13px;color:rgba(255,255,255,.8);letter-spacing:1px}
.dash__cats{display:flex;gap:8px;margin-bottom:14px}
.dash__cats span{flex:1;text-align:center;font-size:13px;font-weight:800;color:var(--accent);background:rgba(42,138,255,.14);border:1px solid rgba(42,138,255,.35);border-radius:8px;padding:6px 0;letter-spacing:1px}
.dash__kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}
.kpi{background:rgba(255,255,255,.07);border-radius:10px;padding:10px 8px;text-align:center}
.kpi b{display:block;font-size:18px;color:var(--accent);font-weight:800}
.kpi i{font-style:normal;font-size:10.5px;color:rgba(255,255,255,.6);display:block;margin-top:3px}
.dash__chart{background:rgba(255,255,255,.05);border-radius:10px;padding:8px;margin-bottom:14px}
.line{fill:none;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
.line--a{stroke:var(--accent);stroke-dasharray:600;stroke-dashoffset:600;animation:draw 2.4s var(--ease) forwards}
.line--b{stroke:rgba(255,138,61,.8);animation:draw 2.4s .3s var(--ease) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.dash__map{background:rgba(255,255,255,.05);border-radius:10px;padding:8px}
.dash__alerts{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.alert{font-size:11.5px;padding:6px 10px;border-radius:7px}
.alert--ok{background:rgba(40,200,64,.16);color:#7ff09a}
.alert--warn{background:rgba(255,138,61,.18);color:#ffc59a}

/* ============ STATS ============ */
.stats{background:linear-gradient(135deg,var(--primary),var(--primary-700));color:#fff;padding:46px 0}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat b{display:block;font-size:clamp(30px,4.5vw,46px);font-weight:800;color:#fff;line-height:1}
.stat span{display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.82)}

/* ============ SECTION ============ */
.section{padding:90px 0}
.section--soft{background:var(--bg-soft)}
.section--dark{background:linear-gradient(160deg,var(--bg-dark),var(--bg-dark-2));color:#fff}
.section__head{margin-bottom:48px}
.section__title{font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.25;letter-spacing:.5px}
.section__title.center,.section__head .center{text-align:center}
.section__title.light{color:#fff}
.section__lead{text-align:center;color:var(--text-soft);max-width:680px;margin:14px auto 0;font-size:16px}
.section--dark .section__lead{color:rgba(255,255,255,.7)}

/* About */
.about{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
.about__text{color:var(--text-soft);font-size:15.5px;margin-bottom:16px}
.about__text strong{color:var(--primary)}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{font-size:13px;background:var(--primary-soft);color:var(--primary);padding:9px 15px;border-radius:10px;font-weight:600}
.about__panel{display:flex;justify-content:center}
.mission{position:relative;background:linear-gradient(150deg,var(--primary),var(--primary-700));color:#fff;border-radius:24px;padding:48px 40px;max-width:360px;width:100%;box-shadow:var(--shadow);overflow:hidden}
.mission__quotes{position:absolute;top:-10px;right:18px;font-size:120px;color:rgba(255,255,255,.12);font-family:Georgia,serif;line-height:1}
.mission p{font-size:30px;font-weight:800;line-height:1.3;margin:10px 0 24px}
.mission__foot{font-size:13px;letter-spacing:1px;color:rgba(255,255,255,.75)}

/* Cards */
.cards{display:grid;gap:24px}
.cards--3{grid-template-columns:repeat(3,1fr)}
.cards--4{grid-template-columns:repeat(4,1fr)}
.cards--2{grid-template-columns:repeat(2,1fr);gap:28px}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(0,96,216,.5)}
.card h3{font-size:19px;margin-bottom:10px;color:var(--text)}
.card p{color:var(--text-soft);font-size:14.5px}
.card__icon{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;color:#fff;margin-bottom:18px}
.card__icon--blue{background:linear-gradient(135deg,var(--primary),var(--primary-700))}
.card__icon--cyan{background:linear-gradient(135deg,var(--accent),var(--primary))}
.card__icon--amber{background:linear-gradient(135deg,#ff8a3d,#f5701f)}
.card--center{text-align:center}
.card--center .card__num{font-size:15px;font-weight:800;color:var(--accent);letter-spacing:2px;margin-bottom:12px}
.card--center:hover .card__num{color:var(--primary)}

/* Parties */
.parties{margin-top:54px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:38px;box-shadow:var(--shadow-sm)}
.parties__title{text-align:center;font-size:24px;font-weight:800;margin-bottom:26px;color:var(--primary)}
.parties__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.party{background:var(--bg-soft);border-radius:14px;padding:24px;text-align:center;border-top:3px solid var(--accent)}
.party__role{display:inline-block;font-size:17px;font-weight:800;color:var(--primary);margin-bottom:10px}
.party p{font-size:14px;color:var(--text-soft)}

/* ============ TABS / SOLUTIONS ============ */
.tabs{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:22px;padding:26px;backdrop-filter:blur(6px)}
.tabs__nav{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tab{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.85);padding:11px 22px;border-radius:999px;font-size:14.5px;font-weight:600;cursor:pointer;transition:.25s}
.tab:hover{background:rgba(255,255,255,.14)}
.tab.is-active{background:linear-gradient(135deg,var(--accent),var(--primary));color:#fff;border-color:transparent;box-shadow:0 10px 22px -12px rgba(0,96,216,.6)}
.tab__panel{display:none;animation:fade .4s var(--ease)}
.tab__panel.is-active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.panel__intro{margin-bottom:24px}
.panel__intro h3{font-size:22px;font-weight:800;color:#fff;margin-bottom:8px}
.panel__intro p{color:rgba(255,255,255,.72);font-size:15px;max-width:760px}

.feature__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature__grid--3{grid-template-columns:repeat(3,1fr)}
.feature{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:22px;transition:.25s}
.feature:hover{background:rgba(255,255,255,.1);transform:translateY(-3px)}
.feature__tag{display:inline-block;font-size:12.5px;font-weight:700;color:var(--primary);background:#fff;padding:4px 12px;border-radius:999px;margin-bottom:12px}
.feature p{color:rgba(255,255,255,.8);font-size:14.5px}

/* 人机料法环 */
.hmefe{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.hmefe--solo{margin-top:8px}
.hmefe__col{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:18px 14px}
.hmefe__col h4{text-align:center;font-size:24px;font-weight:800;color:var(--accent);margin-bottom:14px;position:relative}
.hmefe__col h4::after{content:"";display:block;width:28px;height:3px;background:var(--accent-2);border-radius:2px;margin:8px auto 0}
.hmefe__col ul{list-style:none}
.hmefe__col li{font-size:13px;color:rgba(255,255,255,.82);padding:8px 6px;border-bottom:1px dashed rgba(255,255,255,.12);text-align:center}
.hmefe__col li:last-child{border-bottom:none}

/* ============ CASES ============ */
.case{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm);transition:.3s var(--ease);position:relative;overflow:hidden}
.case::before{content:"";position:absolute;top:0;left:0;width:100%;height:5px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.case:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.case__tag{display:inline-block;font-size:12.5px;font-weight:700;color:var(--primary);background:var(--primary-soft);padding:5px 13px;border-radius:999px;margin-bottom:16px}
.case h3{font-size:20px;margin-bottom:12px;line-height:1.4}
.case p{color:var(--text-soft);font-size:14.5px;margin-bottom:18px}
.case__meta{display:flex;flex-wrap:wrap;gap:8px}
.case__meta span{font-size:12.5px;color:var(--accent-2);background:#fff3ea;padding:5px 12px;border-radius:999px;font-weight:600}

/* ============ CONTACT ============ */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.contact--simple{grid-template-columns:1fr;max-width:680px;margin:0 auto}
.contact__text{color:var(--text-soft);font-size:15.5px;margin:14px 0 22px;max-width:480px}
.contact__list{list-style:none;display:flex;flex-direction:column;gap:12px}
.contact__list li{font-size:15px;color:var(--text)}
.contact__list b{display:inline-block;width:52px;color:var(--primary);font-weight:700}
.contact__form{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--text);margin-bottom:7px}
.field input,.field textarea{width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:10px;font-size:14.5px;font-family:inherit;color:var(--text);transition:border-color .2s,box-shadow .2s;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(42,138,255,.18)}
.form__hint{margin-top:14px;color:var(--primary-600);font-weight:600;font-size:14px;text-align:center}

/* ============ FOOTER ============ */
.footer{background:var(--bg-dark);color:rgba(255,255,255,.8);padding:54px 0 0}
.footer__inner{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-bottom:34px}
.footer__brand{display:flex;align-items:center;gap:14px}
.footer__logo{width:54px;height:54px;flex-shrink:0}
.footer__brand .brand__text{color:#fff}
.footer__brand p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.6)}
.footer__nav{display:flex;gap:26px;flex-wrap:wrap}
.footer__nav a{color:rgba(255,255,255,.72);font-size:14.5px;transition:color .2s}
.footer__nav a:hover{color:var(--accent)}
.footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:13px;color:rgba(255,255,255,.5);text-align:center}
.footer__bottom .container{display:flex;gap:14px;justify-content:center;align-items:center;flex-wrap:wrap}
.footer__bottom .icp{color:rgba(255,255,255,.6);text-decoration:none;border:1px solid rgba(255,255,255,.18);padding:3px 10px;border-radius:8px;transition:color .2s,border-color .2s}
.footer__bottom .icp:hover{color:#fff;border-color:rgba(255,255,255,.45)}

/* ============ REVEAL ============ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ TO TOP ============ */
.totop{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:20px;cursor:pointer;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(12px);transition:.3s;z-index:40}
.totop.is-show{opacity:1;visibility:visible;transform:none}
.totop:hover{background:var(--accent)}

/* ============ RESPONSIVE ============ */
@media (max-width:980px){
  .hero__inner{grid-template-columns:1fr;gap:40px}
  .hero__visual{order:-1}
  .about{grid-template-columns:1fr;gap:34px}
  .cards--4{grid-template-columns:repeat(2,1fr)}
  .feature__grid,.feature__grid--3{grid-template-columns:repeat(2,1fr)}
  .hmefe{grid-template-columns:repeat(3,1fr)}
  .contact{grid-template-columns:1fr}
}
@media (max-width:720px){
  .nav__links{position:fixed;top:64px;right:14px;left:14px;flex-direction:column;align-items:stretch;gap:6px;background:#fff;padding:18px;border-radius:16px;box-shadow:0 20px 50px -20px rgba(0,0,0,.4);transform:translateY(-12px);opacity:0;visibility:hidden;transition:.28s}
  .nav__links.is-open{transform:none;opacity:1;visibility:visible}
  .nav__links a{color:var(--text-soft)!important;padding:11px 6px;border-bottom:1px solid var(--border)}
  .nav__links a:not(.nav__cta)::after{display:none}
  .nav__cta{text-align:center;margin-top:8px}
  .nav__toggle{display:flex}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .cards--3,.cards--4,.cards--2{grid-template-columns:1fr}
  .parties__grid{grid-template-columns:1fr}
  .feature__grid,.feature__grid--3{grid-template-columns:1fr}
  .hmefe{grid-template-columns:repeat(2,1fr)}
  .section{padding:64px 0}
  .tabs{padding:18px}
  .parties{padding:26px 18px}
}
@media (max-width:420px){
  .hmefe{grid-template-columns:1fr}
  .dash__kpis{grid-template-columns:repeat(2,1fr)}
}