/* ============================================================
   杭州魔法字节科技有限公司 MagicByte 官网样式
   主题：深空海军蓝 + 魔法金
   ============================================================ */

:root{
  --bg:#070b16;
  --bg-2:#0a1122;
  --surface:#0d1730;
  --surface-2:#101c3a;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --gold:#e6b954;
  --gold-2:#f5d98e;
  --gold-deep:#c8953a;
  --violet:#7c8cf8;
  --cyan:#4fd8e8;
  --text:#eef1f9;
  --muted:#9aa6c4;
  --muted-2:#68759c;
  --radius:16px;
  --shadow:0 20px 60px -18px rgba(0,0,0,.55);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
::selection{background:rgba(230,185,84,.28)}

/* ---------- 布局 ---------- */
.container{width:min(1180px,92%);margin:0 auto}
.section{padding:104px 0;position:relative}
.skip-link{position:absolute;left:-999px;top:0;z-index:200;background:var(--gold);color:#241a05;padding:10px 16px;border-radius:0 0 10px 0}
.skip-link:focus{left:0}

/* ---------- 标题区 ---------- */
.sec-head{max-width:720px;margin:0 auto 58px;text-align:center}
.sec-tag{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:3px;color:var(--gold);
  border:1px solid rgba(230,185,84,.35);
  background:rgba(230,185,84,.07);
  padding:6px 16px;border-radius:999px;margin-bottom:18px;
}
.sec-tag::before,.sec-tag::after{content:"";width:6px;height:6px;background:var(--gold);border-radius:50%;opacity:.7}
.sec-head h2{
  font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:1px;line-height:1.3;
  background:linear-gradient(120deg,#fff,#cdd6f0);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.sec-desc{color:var(--muted);margin-top:14px;font-size:16px}

/* ---------- 动画辅助 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.on{opacity:1;transform:none}

/* ============================================================
   导航
   ============================================================ */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  background:linear-gradient(180deg,rgba(7,11,22,.88),rgba(7,11,22,0));
  backdrop-filter:blur(0px);
  transition:background .35s,box-shadow .35s,backdrop-filter .35s;
}
.site-header.scrolled{
  background:rgba(8,12,24,.82);
  backdrop-filter:blur(14px);
  box-shadow:0 1px 0 var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{filter:drop-shadow(0 2px 10px rgba(230,185,84,.25))}
.brand-text strong{font-size:20px;letter-spacing:3px;display:block;line-height:1.15}
.brand-text small{font-size:9px;letter-spacing:3.5px;color:var(--gold);font-weight:600}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu a{
  position:relative;padding:8px 15px;font-size:15px;color:var(--muted);
  border-radius:999px;transition:color .25s,background .25s;
}
.nav-menu a:hover{color:#fff}
.nav-menu a.active{color:var(--gold);background:rgba(230,185,84,.09)}
.nav-menu a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--gold);
}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--gold);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============================================================
   Hero
   ============================================================ */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;padding:120px 0 60px}
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.85}
.hero-glow{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(700px 460px at 78% 22%,rgba(124,140,248,.16),transparent 65%),
    radial-gradient(640px 420px at 12% 80%,rgba(230,185,84,.13),transparent 62%),
    radial-gradient(900px 600px at 50% 110%,rgba(79,216,232,.10),transparent 60%);
}
.hero-inner{position:relative;z-index:2;text-align:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;color:var(--gold);
  border:1px solid rgba(230,185,84,.4);background:rgba(10,17,34,.6);
  padding:8px 18px;border-radius:999px;font-size:13.5px;letter-spacing:2px;
  backdrop-filter:blur(6px);
}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 0 rgba(230,185,84,.6);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(230,185,84,.5)}70%{box-shadow:0 0 0 9px rgba(230,185,84,0)}100%{box-shadow:0 0 0 0 rgba(230,185,84,0)}}
.hero-title{
  margin:26px 0 22px;font-size:clamp(38px,6.6vw,72px);font-weight:900;letter-spacing:2px;line-height:1.18;
}
.hero-title .grad-text{
  background:linear-gradient(110deg,var(--gold-2),var(--gold) 45%,#b98a2e);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  text-shadow:0 10px 40px rgba(230,185,84,.18);
}
.hero-sub{max-width:720px;margin:0 auto;color:var(--muted);font-size:clamp(15px,1.6vw,18px)}
.hero-actions{display:flex;gap:16px;justify-content:center;margin-top:36px;flex-wrap:wrap}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 32px;border-radius:999px;font-size:15.5px;font-weight:600;letter-spacing:1px;
  transition:transform .25s,box-shadow .25s,background .25s,border-color .25s;
}
.btn-gold{
  color:#241703;background:linear-gradient(120deg,var(--gold-2),var(--gold) 55%,var(--gold-deep));
  box-shadow:0 12px 30px -8px rgba(230,185,84,.55);
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 18px 38px -8px rgba(230,185,84,.7)}
.btn-ghost{color:#fff;border:1px solid var(--line-2);background:rgba(255,255,255,.03);backdrop-filter:blur(4px)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-2);transform:translateY(-2px)}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  margin:64px auto 0;max-width:960px;
}
.stat{
  padding:20px 10px;border-radius:var(--radius);
  border:1px solid var(--line);background:linear-gradient(160deg,rgba(13,23,48,.85),rgba(10,17,34,.5));
  backdrop-filter:blur(8px);text-align:center;
  transition:border-color .3s,transform .3s;
}
.stat:hover{border-color:rgba(230,185,84,.45);transform:translateY(-4px)}
.stat-num{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--gold);font-variant-numeric:tabular-nums}
.stat-num em{font-style:normal;font-size:.7em;margin-right:2px;opacity:.85}
.stat-label{margin-top:6px;font-size:13px;color:var(--muted);letter-spacing:.5px}

.scroll-hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);z-index:3}
.mouse{display:block;width:24px;height:38px;border:2px solid rgba(255,255,255,.35);border-radius:14px;position:relative}
.mouse i{position:absolute;left:50%;top:7px;width:3px;height:7px;margin-left:-1.5px;border-radius:3px;background:var(--gold);animation:wheel 1.6s infinite}
@keyframes wheel{0%{opacity:1;transform:translateY(0)}100%{opacity:0;transform:translateY(12px)}}

/* ============================================================
   关键词滚动条
   ============================================================ */
.marquee{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(230,185,84,.05),rgba(124,140,248,.05));
  overflow:hidden;padding:16px 0;
}
.marquee-track{display:flex;gap:26px;white-space:nowrap;width:max-content;animation:slide 30s linear infinite}
.marquee-track span{font-size:14.5px;letter-spacing:2px;color:var(--muted)}
.marquee-track i{color:var(--gold);font-style:normal;font-size:11px;align-self:center}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ============================================================
   关于我们
   ============================================================ */
.about{background:
  radial-gradient(600px 420px at 90% 10%,rgba(124,140,248,.07),transparent 65%),
  linear-gradient(180deg,var(--bg),var(--bg-2))}
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center}
.about-copy h3{font-size:clamp(21px,2.4vw,28px);margin-bottom:18px;line-height:1.4}
.about-copy p{color:var(--muted);margin-bottom:14px;font-size:15.5px}
.about-points{margin-top:22px;display:grid;gap:12px}
.about-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:#ccd5ea}
.about-points i{color:var(--gold);font-style:normal;margin-top:1px}
.about-card{position:relative}
.acard-inner{
  position:relative;z-index:1;border:1px solid var(--line-2);border-radius:20px;overflow:hidden;
  background:
    linear-gradient(150deg,rgba(16,28,58,.95),rgba(11,18,38,.95));
  box-shadow:var(--shadow);
}
.acard-inner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(360px 200px at 85% 0%,rgba(230,185,84,.16),transparent 60%);
}
.acard-head{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid var(--line)}
.acard-chip{color:var(--gold);font-size:13.5px;letter-spacing:2px;font-weight:700}
.acard-en{font-size:11px;letter-spacing:3px;color:var(--muted-2)}
.acard-list{padding:12px 24px 20px}
.acard-list > div{
  display:flex;justify-content:space-between;gap:18px;align-items:baseline;
  padding:12px 0;border-bottom:1px dashed var(--line);
}
.acard-list > div:last-child{border-bottom:0}
.acard-list dt{color:var(--muted);font-size:14px;flex-shrink:0}
.acard-list dd{color:#e6ebf8;font-size:14.5px;text-align:right;font-weight:600}
.acard-deco{position:absolute;right:-26px;bottom:-26px;width:180px;height:180px;opacity:.6;pointer-events:none}

/* ============================================================
   核心业务
   ============================================================ */
.business{background:var(--bg-2)}
.biz-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.biz-card{
  position:relative;padding:34px 30px 28px;border:1px solid var(--line);border-radius:20px;
  background:linear-gradient(165deg,rgba(16,28,58,.7),rgba(10,17,34,.35));
  overflow:hidden;transition:transform .35s,border-color .35s,box-shadow .35s;
}
.biz-card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
  opacity:0;transition:opacity .35s;
}
.biz-card:hover{transform:translateY(-6px);border-color:rgba(230,185,84,.4);box-shadow:var(--shadow)}
.biz-card:hover::after{opacity:1}
.biz-icon{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;color:var(--gold);margin-bottom:20px;background:rgba(230,185,84,.1);border:1px solid rgba(230,185,84,.22)}
.biz-icon svg{width:32px;height:32px}
.biz-card h3{font-size:20px;margin-bottom:12px;letter-spacing:.5px}
.biz-card p{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.biz-key{display:inline-block;font-size:12px;color:var(--cyan);letter-spacing:.5px;background:rgba(79,216,232,.07);border:1px solid rgba(79,216,232,.18);padding:4px 12px;border-radius:999px}

/* ============================================================
   技术实力
   ============================================================ */
.technology{background:linear-gradient(180deg,var(--bg),#080d1c)}
.tech-wrap{display:grid;grid-template-columns:.85fr 1.5fr;gap:56px;align-items:start}
.tech-side{
  position:sticky;top:110px;padding:34px 30px;border-radius:20px;text-align:center;
  border:1px solid var(--line-2);
  background:radial-gradient(300px 240px at 50% 0%,rgba(230,185,84,.13),transparent 65%),linear-gradient(160deg,rgba(16,28,58,.9),rgba(10,17,34,.5));
  box-shadow:var(--shadow);
}
.tech-num.big{font-size:74px;font-weight:900;line-height:1;color:var(--gold);font-variant-numeric:tabular-nums;text-shadow:0 10px 34px rgba(230,185,84,.25)}
.tech-num.big span{font-size:30px;vertical-align:super}
.tech-num-label{color:var(--muted);font-size:14px;letter-spacing:2px;margin:6px 0 22px}
.tech-num.small{font-size:34px;font-weight:800;color:#dbe3ff;margin-top:6px}
.tech-num.small span{font-size:15px;color:var(--muted);font-weight:600;margin-left:4px}
.tech-note{margin-top:26px;font-size:12px;color:var(--muted-2);line-height:1.8;border-top:1px dashed var(--line);padding-top:16px}
.tech-list{display:grid;gap:16px}
.tech-item{
  display:grid;grid-template-columns:52px 1fr;gap:20px;padding:22px 24px;
  border:1px solid var(--line);border-radius:16px;background:rgba(13,23,48,.55);
  transition:transform .3s,border-color .3s,background .3s;
}
.tech-item:hover{transform:translateX(6px);border-color:rgba(230,185,84,.35);background:rgba(16,28,58,.8)}
.tech-idx{font-size:15px;color:var(--gold);font-weight:800;letter-spacing:1px;padding-top:3px;font-variant-numeric:tabular-nums}
.tech-item h3{font-size:16.5px;margin-bottom:6px;color:#e6ebf8}
.tech-item p{font-size:14px;color:var(--muted)}

/* ============================================================
   荣誉奖项
   ============================================================ */
.honors{background:linear-gradient(180deg,#080d1c,var(--bg))}
.honor-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.honor-card{
  padding:36px 30px;border-radius:20px;text-align:center;position:relative;
  border:1px solid var(--line);background:linear-gradient(165deg,rgba(16,28,58,.72),rgba(10,17,34,.4));
  transition:transform .35s,border-color .35s;
}
.honor-card:hover{transform:translateY(-6px);border-color:rgba(230,185,84,.42)}
.honor-medal{font-size:40px;margin-bottom:16px}
.honor-card h3{font-size:18.5px;margin-bottom:12px}
.honor-card p{color:var(--muted);font-size:14px;margin-bottom:16px}
.honor-meta{display:inline-block;font-size:12px;letter-spacing:1px;color:var(--gold);border:1px solid rgba(230,185,84,.3);padding:4px 14px;border-radius:999px;background:rgba(230,185,84,.07)}

/* ============================================================
   CTA & 页脚
   ============================================================ */
.cta{position:relative;padding:100px 0;overflow:hidden}
.cta-glow{position:absolute;inset:0;background:radial-gradient(560px 320px at 50% 50%,rgba(230,185,84,.16),transparent 65%);pointer-events:none}
.cta-inner{position:relative;text-align:center;padding:64px 30px;border-radius:24px;border:1px solid var(--line-2);background:linear-gradient(160deg,rgba(16,28,58,.75),rgba(9,14,28,.8))}
.cta h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;margin-bottom:14px}
.cta p{color:var(--muted);font-size:16px;max-width:620px;margin:0 auto 32px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

.site-footer{background:#05080f;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;padding:56px 0 40px}
.f-brand p{color:var(--muted);font-size:14px;margin-top:14px;line-height:1.9}
.f-col h4{font-size:14px;letter-spacing:2px;color:var(--gold);margin-bottom:16px}
.f-col a,.f-col .f-line{display:block;color:var(--muted);font-size:14px;margin-bottom:10px;transition:color .25s,padding-left .25s}
.f-col a:hover{color:var(--gold-2);padding-left:5px}
.f-line a:hover{color:var(--gold-2)}
.f-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;border-top:1px solid var(--line);padding:20px 0;color:var(--muted-2);font-size:13px}

.to-top{
  position:fixed;right:26px;bottom:26px;z-index:90;width:46px;height:46px;border-radius:50%;
  border:1px solid rgba(230,185,84,.5);background:rgba(13,23,48,.9);color:var(--gold);font-size:20px;
  opacity:0;pointer-events:none;transform:translateY(14px);transition:.3s;backdrop-filter:blur(6px);
}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--gold);color:#241703}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1024px){
  .about-grid,.tech-wrap{grid-template-columns:1fr;gap:40px}
  .tech-side{position:static}
  .tech-num.big{font-size:58px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .nav-toggle{display:flex}
  .nav-menu{
    position:fixed;inset:74px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(8,12,24,.97);backdrop-filter:blur(16px);padding:14px 6% 24px;
    transform:translateY(-130%);transition:transform .4s;border-bottom:1px solid var(--line);
  }
  .nav-menu.open{transform:none}
  .nav-menu a{padding:13px 12px;border-radius:12px;font-size:16px;text-align:center}
  .hero{padding-top:120px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:12px}
  .biz-grid,.honor-grid{grid-template-columns:1fr}
  .section{padding:80px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 28px}
  .f-bottom{justify-content:center;text-align:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}