/* ============================================================
   HAOYUAN 颢元科技 · 共享样式（高大上 · 双语 · 响应式）
   ============================================================ */
:root{
  --bg:#ffffff;
  --bg-soft:#f5f8f5;
  --bg-tint:#eef5f0;
  --ink:#0f2a1d;          /* 标题深墨绿 */
  --txt:#2c3a32;          /* 正文 */
  --txt-dim:#6a7a70;      /* 次要 */
  --green:#0c8a4e;
  --green-deep:#0a6b3d;
  --teal:#0e9aa3;
  --gold:#bfa05a;         /* 高端点缀 */
  --line:#e3ebe5;
  --line-strong:#cdd9d0;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 22px 55px rgba(15,60,40,.09);
  --shadow-sm:0 8px 24px rgba(15,60,40,.07);
  --font:"Noto Sans SC","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--txt);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 双语显隐 ---------- */
.zh{display:inline}
.en{display:none}
body.lang-en .zh{display:none}
body.lang-en .en{display:inline}

/* ---------- 通用区块 ---------- */
section{padding:96px 0}
.sec-head{max-width:760px;margin:0 auto 52px;text-align:center}
.sec-tag{
  display:inline-block;font-size:12.5px;letter-spacing:3px;text-transform:uppercase;
  color:var(--green);font-weight:700;margin-bottom:14px;
}
.sec-tag::before{content:"";display:inline-block;width:26px;height:1.5px;background:var(--green);
  vertical-align:middle;margin-right:10px;opacity:.6}
.sec-head h2{font-size:clamp(26px,3.4vw,38px);color:var(--ink);font-weight:800;letter-spacing:-.5px;line-height:1.2}
.sec-head p{margin-top:16px;color:var(--txt-dim);font-size:16px}
.lead{color:var(--txt-dim);font-size:17px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:14px 26px;border-radius:30px;
  font-size:15px;font-weight:700;cursor:pointer;transition:.22s;border:1px solid transparent;
}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--teal));color:#fff;box-shadow:0 12px 30px rgba(12,138,78,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(12,138,78,.36)}
.btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--green);color:var(--green)}
.btn .arr{transition:.22s}
.btn:hover .arr{transform:translateX(3px)}

/* ---------- 导航 ---------- */
nav{
  position:sticky;top:0;z-index:60;backdrop-filter:saturate(160%) blur(14px);
  background:rgba(255,255,255,.82);border-bottom:1px solid var(--line);transition:.25s;
}
nav.scrolled{box-shadow:0 6px 24px rgba(15,60,40,.06)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:12px}
.logo img{height:38px;width:auto}
.logo .txt b{font-size:18px;color:var(--ink);letter-spacing:.5px;font-weight:800}
.logo .txt .sub{display:block;font-size:10.5px;font-weight:600;color:var(--txt-dim);letter-spacing:2px}
.nav-links{display:flex;gap:30px;font-size:14.5px;color:var(--txt-dim);font-weight:600}
.nav-links a{position:relative;padding:6px 0;transition:.2s}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--green);transition:.25s}
.nav-links a:hover{color:var(--green)}
.nav-links a.active{color:var(--green)}
.nav-links a.active::after,.nav-links a:hover::after{right:0}
.nav-right{display:flex;align-items:center;gap:14px}
.lang-btn{border:1px solid var(--line-strong);background:#fff;color:var(--ink);padding:8px 16px;border-radius:30px;cursor:pointer;font-size:13px;font-weight:700;transition:.2s}
.lang-btn:hover{border-color:var(--green);color:var(--green)}
.menu-toggle{display:none;background:none;border:none;color:var(--ink);font-size:26px;cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;padding:108px 0 96px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(720px 420px at 82% -8%, rgba(14,154,163,.16), transparent 60%),
    radial-gradient(620px 420px at 10% 12%, rgba(12,138,78,.14), transparent 62%),
    linear-gradient(180deg,#f7faf8,#ffffff);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(15,60,40,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,60,40,.045) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 40%,transparent 78%);
          mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 40%,transparent 78%);
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.badge{font-size:13px;font-weight:700;color:var(--green-deep);background:rgba(12,138,78,.08);
  border:1px solid rgba(12,138,78,.22);border-radius:30px;padding:7px 15px}
.hero h1{font-size:clamp(34px,5vw,56px);line-height:1.12;color:var(--ink);font-weight:850;letter-spacing:-1px}
.hero h1 .accent{background:linear-gradient(100deg,var(--green),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin-top:22px;max-width:560px;font-size:17px}
.hero-btns{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.hero-logo{
  background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);
  padding:34px;display:flex;flex-direction:column;align-items:center;gap:18px;position:relative;overflow:hidden;
}
.hero-logo::before{content:"";position:absolute;top:-40%;right:-30%;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(12,138,78,.12),transparent 70%)}
.hero-logo img{width:100%;max-width:280px;position:relative}
.hero-logo .cap{font-size:14px;font-weight:700;color:var(--green-deep);letter-spacing:2px;position:relative}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:60px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.stat::before{content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:linear-gradient(180deg,var(--green),var(--teal))}
.stat .num{font-size:28px;font-weight:850;color:var(--green);letter-spacing:-.5px}
.stat .label{font-size:13px;color:var(--txt-dim);margin-top:6px;line-height:1.45}

/* ---------- 卡片通用 ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm);transition:.25s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--line-strong)}

/* 三大亮点 */
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{padding:34px 30px}
.feature .ic{width:50px;height:50px;border-radius:14px;background:linear-gradient(135deg,var(--green),var(--teal));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;margin-bottom:18px}
.feature h3{font-size:19px;color:var(--ink);margin-bottom:10px;font-weight:800}
.feature p{color:var(--txt-dim);font-size:14.5px}

/* 产品卡 */
.cols-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.prod{position:relative;overflow:hidden}
.prod .model{display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1px;color:var(--green-deep);
  background:rgba(12,138,78,.08);border:1px solid rgba(12,138,78,.22);border-radius:8px;padding:5px 11px;margin-bottom:12px}
.prod h3{font-size:20px;color:var(--ink);font-weight:800;margin-bottom:4px}
.prod .cat{font-size:13px;color:var(--txt-dim);margin-bottom:14px}
.prod p{color:var(--txt-dim);font-size:14.5px;margin-bottom:16px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags span{font-size:12.5px;color:var(--txt-dim);background:var(--bg-soft);border:1px solid var(--line);border-radius:20px;padding:6px 13px}

/* 对比 */
.cmp-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:14px}
.cmp{border-radius:var(--radius);padding:32px;border:1px solid var(--line);background:#fff}
.cmp.cb{background:linear-gradient(160deg,#fff,#f1f9f3);border-color:rgba(12,138,78,.3);box-shadow:var(--shadow-sm)}
.cmp h4{font-size:18px;margin-bottom:6px;color:var(--ink);font-weight:800}
.cmp .sub{font-size:13px;color:var(--txt-dim);margin-bottom:18px}
.cmp ul{list-style:none}
.cmp li{padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--txt-dim);display:flex;gap:10px;align-items:flex-start}
.cmp .yes::before{content:"✓";color:var(--green);font-weight:800;flex:none}
.cmp .no::before{content:"–";color:#b9c4bc;font-weight:800;flex:none}
.cmp.cb li b{color:var(--ink)}

/* 参数表 */
.table-wrap{overflow-x:auto;margin-top:30px;border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--line)}
table.spec{width:100%;border-collapse:collapse;background:#fff;min-width:560px}
table.spec th{background:var(--bg-soft);color:var(--green-deep);text-align:left;font-size:14px;padding:15px 20px;font-weight:800}
table.spec td{padding:13px 20px;border-top:1px solid var(--line);font-size:14.5px;color:var(--txt-dim)}
table.spec td:first-child{color:var(--ink);font-weight:700;white-space:nowrap}
table.spec tr:hover td{background:var(--bg-soft)}

/* 图片画廊 */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery.sm{grid-template-columns:repeat(4,1fr)}
.gallery figure{position:relative;overflow:hidden;border-radius:var(--radius-sm);border:1px solid var(--line);aspect-ratio:4/3;background:var(--bg-soft)}
.gallery img{width:100%;height:100%;object-fit:cover;transition:.4s}
.gallery figure:hover img{transform:scale(1.06)}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:10px 12px;font-size:12px;color:#fff;
  background:linear-gradient(180deg,transparent,rgba(15,42,29,.72));opacity:0;transition:.3s;font-weight:600}
.gallery figure:hover figcaption{opacity:1}

/* 时间线 */
.tl{position:relative;max-width:760px;margin:0 auto;padding-left:26px}
.tl::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--green),var(--teal));border-radius:2px}
.tl-item{position:relative;padding:0 0 30px 22px}
.tl-item::before{content:"";position:absolute;left:-26px;top:5px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--green)}
.tl-item .year{font-size:17px;font-weight:850;color:var(--green-deep)}
.tl-item .desc{font-size:14.5px;color:var(--txt-dim);margin-top:4px}

/* 团队 */
.member{text-align:left}
.member .ava{width:64px;height:64px;border-radius:16px;background:linear-gradient(135deg,var(--green),var(--teal));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;margin-bottom:16px}
.member .role{font-size:12.5px;font-weight:700;color:var(--green);letter-spacing:1px;text-transform:uppercase}
.member h4{font-size:18px;color:var(--ink);margin:6px 0 10px;font-weight:800}
.member p{font-size:14px;color:var(--txt-dim)}
.team-note{background:var(--bg-soft);border:1px dashed var(--line-strong);border-radius:var(--radius);padding:20px 26px;font-size:14.5px;color:var(--txt-dim);margin-top:28px}

/* 投资与资本 */
.invest{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:14px}
.inv{background:linear-gradient(160deg,#fff,#f3faf5);border:1px solid rgba(12,138,78,.25);border-radius:var(--radius);padding:30px;position:relative;overflow:hidden}
.inv .k{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--green);font-weight:700}
.inv h4{font-size:19px;color:var(--ink);margin:10px 0 12px;font-weight:800}
.inv p{font-size:14px;color:var(--txt-dim)}
.inv .tag{display:inline-block;margin-top:14px;font-size:12px;font-weight:700;color:var(--green-deep);background:rgba(12,138,78,.1);border-radius:20px;padding:5px 13px}
.shares{margin-top:24px;background:linear-gradient(160deg,#fff,#f3faf5);border:1px solid rgba(12,138,78,.25);border-radius:var(--radius);padding:26px 30px;overflow-x:auto}
.shares h4{margin:0 0 14px;font-size:16px;font-weight:800;color:var(--ink)}
.shares table{width:100%;border-collapse:collapse;font-size:14px;color:var(--txt)}
.shares th,.shares td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.shares th{color:var(--txt-dim);font-weight:600;font-size:12.5px;letter-spacing:.5px;background:rgba(12,138,78,.05)}
.shares td:nth-child(2),.shares td:nth-child(3),.shares th:nth-child(2),.shares th:nth-child(3){text-align:right;font-variant-numeric:tabular-nums}
.shares tr.total td{font-weight:800;color:var(--ink);border-bottom:none;background:rgba(12,138,78,.06)}
.shares-note{margin:12px 0 0;font-size:12px;color:var(--txt-dim)}

/* 信任数字 */
.proof-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.proof{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center;box-shadow:var(--shadow-sm)}
.proof .num{font-size:26px;font-weight:850;color:var(--green)}
.proof .label{font-size:13px;color:var(--txt-dim);margin-top:8px}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.form input,.form textarea{width:100%;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:var(--txt);font-size:14.5px;font-family:inherit;margin-bottom:14px;transition:.2s}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(12,138,78,.1)}
.form textarea{min-height:120px;resize:vertical}
.addr{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 26px;box-shadow:var(--shadow-sm)}
.addr .row{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.addr .row:last-child{border-bottom:none}
.addr .k{color:var(--green-deep);font-weight:700;min-width:84px;flex:none}
.addr .v{color:var(--txt-dim)}

/* 页脚 */
footer{padding:40px 0;border-top:1px solid var(--line);color:var(--txt-dim);font-size:13.5px;text-align:center;background:var(--bg-soft)}
footer .f-logo{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:12px}
footer .f-logo img{height:30px}
footer .f-logo b{color:var(--ink);font-size:16px;font-weight:800}

/* 滚动揭示动画 */
.reveal.reveal-init{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.reveal-init.in{opacity:1;transform:none}

/* 响应式 */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .cols-3,.cols-2,.cmp-wrap,.invest,.proof-row,.contact-grid{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .gallery.sm{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:#fff;padding:20px 24px;gap:18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .menu-toggle{display:block}
  section{padding:70px 0}
}
@media(max-width:520px){
  .gallery,.gallery.sm{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .hero h1{font-size:34px}
}