/* ============================================================
   羽翼安全官网 · 全站设计系统 v1 (2026-10)
   延续产品页「深蓝+金」体系 · 现代B2B风格
   所有类名统一 yy- 前缀，避免与任何旧模板冲突
   ============================================================ */

/* ---------- tokens ---------- */
:root{
  --navy-950:#3D6579; --navy-900:#4A7690; --navy-800:#5A839B; --navy-700:#6B93A9; --navy-600:#7FA4B8;
  --gold:#C9A227; --gold-light:#E3C15C;
  --blue:#2E6FD8; --blue-soft:#EAF1FC;
  --green:#37C978;
  --ink:#1B2A3D; --ink-2:#4A5B70; --ink-3:#8494A7;
  --line:#E4E9F0; --bg-soft:#F6F8FB; --white:#FFF;
  --radius:16px; --radius-sm:10px;
  --shadow-card:0 10px 40px rgba(11,31,58,.08);
  --shadow-lift:0 18px 50px rgba(11,31,58,.14);
  --wrap:1200px;
}

/* ---------- reset ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--ink);background:var(--white);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit;transition:color .2s}
ul,ol{list-style:none}
button{font-family:inherit;border:none;cursor:pointer;background:none}
table{border-collapse:collapse}

.yy-wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.yy-header{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:background .3s,box-shadow .25s}
.yy-header.is-scrolled{background:rgba(255,255,255,.97);box-shadow:0 8px 30px rgba(8,20,40,.10)}
.yy-header .bar{max-width:var(--wrap);margin:0 auto;padding:0 32px;height:96px;display:flex;align-items:center;gap:36px}
.yy-logo{display:flex;align-items:center;flex-shrink:0}
.yy-logo{margin-left:44px}
.yy-logo img{display:block;height:80px;width:auto;max-width:360px;object-fit:contain}
.yy-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.yy-nav>.item{position:relative}
.yy-nav>.item>a{display:flex;align-items:center;gap:5px;color:rgba(27,42,61,.74);font-size:15.5px;padding:31px 17px;white-space:nowrap}
.yy-nav>.item>a .arr{font-size:10px;opacity:.55;transform:translateY(1px)}
.yy-nav>.item>a:hover,.yy-nav>.item.on>a{color:var(--navy-800)}
.yy-nav>.item.on>a::after{content:"";position:absolute;left:17px;right:17px;bottom:20px;height:2px;border-radius:2px;background:var(--gold)}
.yy-drop{position:absolute;top:100%;left:50%;transform:translate(-50%,8px);min-width:236px;background:#fff;border-radius:14px;box-shadow:0 24px 70px rgba(8,20,40,.22);padding:10px;opacity:0;visibility:hidden;transition:all .22s ease}
.yy-nav>.item:hover .yy-drop{opacity:1;visibility:visible;transform:translate(-50%,0)}
.yy-drop.wide{min-width:560px;display:grid;grid-template-columns:1fr 1fr;gap:2px 18px}
.yy-drop a{display:flex;flex-direction:column;gap:1px;padding:11px 14px;border-radius:10px;color:var(--ink);font-size:14.5px;font-weight:600;line-height:1.4}
.yy-drop a small{font-weight:400;font-size:12px;color:var(--ink-3)}
.yy-drop a:hover{background:var(--bg-soft);color:var(--navy-700)}
.yy-drop a.gold{color:var(--navy-700)}
.yy-drop a.gold small b{color:var(--gold);font-weight:700}
.yy-head-cta{flex-shrink:0;background:var(--gold);color:var(--navy-950);font-size:14.5px;font-weight:700;padding:10px 24px;border-radius:99px;white-space:nowrap}
.yy-head-cta:hover{filter:brightness(1.1);color:var(--navy-950)}
.yy-burger{display:none;flex-direction:column;gap:5px;margin-left:auto;padding:8px}
.yy-burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:all .25s}
.yy-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.yy-burger.open span:nth-child(2){opacity:0}
.yy-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.yy-mnav{display:none;background:var(--navy-950);border-top:1px solid rgba(255,255,255,.08);max-height:0;overflow:hidden;transition:max-height .35s ease}
.yy-mnav.open{max-height:80vh;overflow-y:auto}
.yy-mnav a{display:block;color:rgba(255,255,255,.82);font-size:15px;padding:13px 32px;border-bottom:1px solid rgba(255,255,255,.06)}
.yy-mnav .grp{color:var(--gold-light);font-size:12.5px;letter-spacing:.15em;padding:14px 32px 4px}
@media(max-width:1080px){
  .yy-nav,.yy-head-cta{display:none}
  .yy-burger{display:flex}
  .yy-mnav{display:block}
  .yy-header .bar{height:64px}
  .yy-logo{margin-left:0}
  .yy-logo img{height:38px;max-width:160px}
  .yy-flogo{height:26px;max-width:116px}
}

/* ---------- page hero (内页头图) ---------- */
.yy-pagehero{position:relative;background:
  radial-gradient(900px 420px at 85% -30%, rgba(201,162,39,.16), transparent 60%),
  radial-gradient(700px 380px at -10% 120%, rgba(36,80,140,.6), transparent 60%),
  linear-gradient(155deg,var(--navy-950) 0%,var(--navy-900) 60%,var(--navy-800) 100%);
  color:#fff;overflow:hidden}
.yy-pagehero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.yy-pagehero .in{position:relative;z-index:1;max-width:var(--wrap);margin:0 auto;padding:78px 32px 64px}
.yy-pagehero .crumb{font-size:13.5px;color:rgba(255,255,255,.55);margin-bottom:18px}
.yy-pagehero .crumb a{color:rgba(255,255,255,.55)}
.yy-pagehero .crumb a:hover{color:var(--gold-light)}
.yy-pagehero h1{font-size:40px;font-weight:700;line-height:1.25;margin-bottom:14px;text-wrap:balance}
.yy-pagehero h1 em{font-style:normal;color:var(--gold-light)}
.yy-pagehero p.lead{font-size:16.5px;color:rgba(255,255,255,.68);max-width:640px}

/* ---------- section ---------- */
.yy-sec{padding:96px 0}
.yy-sec.tight{padding:64px 0}
.yy-sec.bg-soft{background:var(--bg-soft)}
.yy-sec.bg-navy{background:linear-gradient(170deg,var(--navy-950),var(--navy-900));color:#fff}
.yy-sec-head{max-width:860px;margin-bottom:56px}
.yy-sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.yy-kicker{display:inline-flex;align-items:center;gap:10px;font-size:14px;letter-spacing:.16em;color:var(--gold);font-weight:700;margin-bottom:14px}
.yy-kicker::before{content:"";width:24px;height:3px;border-radius:2px;background:var(--gold)}
.yy-sec-head.center .yy-kicker{justify-content:center}
.yy-sec-head h2{font-size:34px;line-height:1.3;font-weight:700;margin-bottom:14px;color:var(--ink);text-wrap:balance}
.yy-sec-head p{font-size:16px;color:var(--ink-2)}
.bg-navy .yy-sec-head h2{color:#fff}
.bg-navy .yy-sec-head p{color:rgba(255,255,255,.62)}
.bg-navy .yy-kicker{color:var(--gold-light)}

/* ---------- buttons ---------- */
.yy-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15.5px;font-weight:600;padding:14px 34px;border-radius:99px;transition:all .2s;cursor:pointer}
.yy-btn.gold{background:var(--gold);color:var(--navy-950)}
.yy-btn.gold:hover{filter:brightness(1.1);box-shadow:0 10px 30px rgba(201,162,39,.35)}
.yy-btn.ghost{border:1px solid rgba(255,255,255,.35);color:#fff}
.yy-btn.ghost:hover{border-color:var(--gold-light);color:var(--gold-light)}
.yy-btn.navy{background:var(--navy-900);color:#fff}
.yy-btn.navy:hover{background:var(--navy-700)}
.yy-btn.line{border:1px solid var(--line);color:var(--ink)}
.yy-btn.line:hover{border-color:var(--navy-700);color:var(--navy-700)}

/* ---------- cards ---------- */
.yy-cards{display:grid;gap:24px}
.yy-cards.c2{grid-template-columns:repeat(2,1fr)}
.yy-cards.c3{grid-template-columns:repeat(3,1fr)}
.yy-cards.c4{grid-template-columns:repeat(4,1fr)}
.yy-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;transition:all .25s ease;position:relative}
.yy-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lift);border-color:transparent}
.yy-card .ico{width:52px;height:52px;border-radius:13px;background:linear-gradient(150deg,var(--navy-900),var(--navy-700));display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.yy-card .ico svg{width:26px;height:26px;stroke:var(--gold-light);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.yy-card h3{font-size:19px;font-weight:700;margin-bottom:10px;color:var(--ink)}
.yy-card p{font-size:14.5px;color:var(--ink-2)}
.yy-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:var(--navy-700)}
.yy-card .more::after{content:"→";transition:transform .2s}
.yy-card:hover .more::after{transform:translateX(4px)}
.yy-card .more:hover{color:var(--gold)}

/* 数字统计 */
.yy-stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.14);padding-top:36px;gap:20px}
.yy-stats .num{font-size:40px;font-weight:700;line-height:1.1;color:#fff}
.yy-stats .num small{font-size:16px;font-weight:500;color:var(--gold-light);margin-left:2px}
.yy-stats .lbl{font-size:14px;color:rgba(255,255,255,.55);margin-top:6px}

/* 列表项 */
.yy-list li{position:relative;padding-left:22px;margin-bottom:12px;font-size:15px;color:var(--ink-2)}
.yy-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--gold);transform:rotate(45deg)}
.yy-list.white li{color:rgba(255,255,255,.72)}

/* 分栏图文 */
.yy-split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.yy-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-card);background:linear-gradient(150deg,var(--navy-900),var(--navy-700));aspect-ratio:4/2.7;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.4);font-size:14px;letter-spacing:.1em}

/* 步骤 */
.yy-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step}
.yy-step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;position:relative}
.yy-step .no{font-size:15px;font-weight:800;color:var(--gold);letter-spacing:.1em;margin-bottom:14px}
.yy-step h3{font-size:18px;font-weight:700;margin-bottom:8px}
.yy-step p{font-size:14.5px;color:var(--ink-2)}

/* 表格 */
.yy-table{width:100%;background:#fff;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line)}
.yy-table th{background:var(--navy-900);color:#fff;font-size:14.5px;font-weight:600;padding:14px 18px;text-align:left}
.yy-table td{padding:13px 18px;font-size:14.5px;color:var(--ink-2);border-top:1px solid var(--line)}
.yy-table tr:hover td{background:var(--bg-soft)}

/* 富文本（CMS 内容区） */
.yy-rich{font-size:15.5px;color:var(--ink-2);line-height:1.9}
.yy-rich h2,.yy-rich h3{color:var(--ink);font-weight:700;margin:34px 0 14px;font-size:22px}
.yy-rich h3{font-size:18px}
.yy-rich p{margin-bottom:14px}
.yy-rich img{border-radius:var(--radius-sm);margin:18px 0;box-shadow:var(--shadow-card)}
.yy-rich ul{margin:0 0 14px}
.yy-rich ul li{position:relative;padding-left:22px;margin-bottom:8px}
.yy-rich ul li::before{content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:2px;background:var(--gold);transform:rotate(45deg)}
.yy-rich strong{color:var(--ink)}

/* ---------- CTA 横幅 ---------- */
.yy-cta{position:relative;background:linear-gradient(135deg,var(--navy-950),var(--navy-800));color:#fff;overflow:hidden}
.yy-cta::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 300px at 85% 20%,rgba(201,162,39,.18),transparent 60%)}
.yy-cta .in{position:relative;max-width:var(--wrap);margin:0 auto;padding:72px 32px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.yy-cta h2{font-size:30px;font-weight:700;margin-bottom:10px}
.yy-cta h2 em{font-style:normal;color:var(--gold-light)}
.yy-cta p{color:rgba(255,255,255,.65);font-size:15.5px}
.yy-cta .tel{font-size:24px;font-weight:700;color:var(--gold-light);margin-top:8px}

/* ---------- footer ---------- */
.yy-footer{background:var(--navy-950);color:rgba(255,255,255,.6);padding:72px 0 0}
.yy-footer .cols{max-width:var(--wrap);margin:0 auto;padding:0 32px 52px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.yy-flogo{height:34px;width:auto;max-width:150px;object-fit:contain;display:block;filter:drop-shadow(0 1px 6px rgba(255,255,255,.35))}

.yy-footer .brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.yy-footer .brand svg{width:34px;height:34px}
.yy-footer .brand b{color:#fff;font-size:18px}
.yy-footer .desc{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.5)}
.yy-footer h4{color:#fff;font-size:15.5px;font-weight:600;margin-bottom:18px}
.yy-footer .col a{display:block;font-size:13.5px;color:rgba(255,255,255,.55);padding:4.5px 0}
.yy-footer .col a:hover{color:var(--gold-light)}
.yy-footer .contact{font-size:13.5px;line-height:2;color:rgba(255,255,255,.55)}
.yy-footer .contact .nb{white-space:nowrap}
.yy-footer .contact b{color:var(--gold-light);font-weight:600}
.yy-footer .bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 32px;text-align:center;font-size:12.5px;color:rgba(255,255,255,.38)}
.yy-footer .bottom a{color:rgba(255,255,255,.38)}
.yy-footer .bottom a:hover{color:var(--gold-light)}

/* ---------- 动效 ---------- */
.yy-js .yy-reveal{transition:none}
.yy-js .yy-reveal.in{opacity:1;transform:none}
.yy-js .yy-reveal.d1{transition-delay:.08s}.yy-js .yy-reveal.d2{transition-delay:.16s}.yy-js .yy-reveal.d3{transition-delay:.24s}
@media(prefers-reduced-motion:reduce){.yy-js .yy-reveal{opacity:1;transform:none;transition:none}}

/* ---------- 返回顶部 ---------- */
.yy-totop{position:fixed;right:28px;bottom:34px;width:46px;height:46px;border-radius:50%;background:var(--navy-900);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:var(--shadow-lift);opacity:0;visibility:hidden;transition:all .25s;z-index:800}
.yy-totop.show{opacity:1;visibility:visible}
.yy-totop:hover{background:var(--gold);color:var(--navy-950)}

/* ---------- 响应式 ---------- */
@media(max-width:1080px){
  .yy-cards.c4{grid-template-columns:repeat(2,1fr)}
  .yy-cards.c3{grid-template-columns:repeat(2,1fr)}
  .yy-steps{grid-template-columns:1fr}
  .yy-split{grid-template-columns:1fr;gap:36px}
  .yy-footer .cols{grid-template-columns:1fr 1fr}
  .yy-pagehero h1{font-size:32px}
  .yy-sec{padding:64px 0}
  .yy-sec-head h2{font-size:28px}
}
@media(max-width:640px){
  .yy-cards.c2,.yy-cards.c3,.yy-cards.c4{grid-template-columns:1fr}
  .yy-stats{grid-template-columns:1fr 1fr}
  .yy-footer .cols{grid-template-columns:1fr}
  .yy-cta .in{flex-direction:column;align-items:flex-start}
  .yy-pagehero .in{padding:52px 24px 44px}
  .yy-wrap{padding:0 22px}
  .yy-header .bar{padding:0 22px}
}

/* ---------- 产品总览卡(yy-prod) —— 补齐子页缺失组件 ---------- */
.yy-prods{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:1080px){.yy-prods{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.yy-prods{grid-template-columns:1fr}}
.yy-prod{position:relative;display:flex;flex-direction:column;gap:9px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px 22px;color:var(--ink);text-decoration:none;transition:transform .2s,box-shadow .2s,border-color .2s}
.yy-prod:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:rgba(201,162,39,.6)}
.yy-prod .ico{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:12px;background:linear-gradient(150deg,var(--navy-800),var(--navy-950));margin-bottom:4px;flex-shrink:0}
.yy-prod .ico svg{width:24px;height:24px;fill:none;stroke:var(--gold-light);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.yy-prod h3{font-size:17px;font-weight:700;color:var(--navy-900);line-height:1.4}
.yy-prod p{font-size:13.5px;color:var(--ink-2);line-height:1.7;flex:1}
.yy-prod .go{font-size:13.5px;font-weight:700;color:var(--gold);margin-top:2px}
.yy-prod .flag{position:absolute;top:16px;right:16px;font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--gold);border:1px solid rgba(201,162,39,.55);border-radius:99px;padding:3px 10px;background:rgba(201,162,39,.08)}
.yy-group-t{display:flex;align-items:baseline;gap:14px;margin:46px 0 20px}
.yy-group-t:first-child{margin-top:0}
.yy-group-t i{display:inline-block;width:5px;height:22px;border-radius:3px;background:var(--gold);align-self:center}
.yy-group-t h3{font-size:23px;font-weight:700;color:var(--navy-900)}
.yy-group-t span{font-size:13.5px;color:var(--ink-3)}

/* ---------- 产品详情页导航条 ---------- */
.yy-pnav{position:sticky;top:96px;z-index:880;background:rgba(246,248,251,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);box-shadow:0 4px 14px rgba(11,31,58,.05)}
@media(max-width:1080px){.yy-pnav{top:64px}}
.yy-pnav-in{max-width:var(--wrap);margin:0 auto;padding:9px 32px;display:flex;flex-wrap:wrap;gap:5px;align-items:center}
.yy-pnav-lab{font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--ink-3);margin-right:6px}
.yy-pnav a{font-size:13px;font-weight:600;color:var(--ink-2);padding:6px 13px;border-radius:99px;white-space:nowrap;text-decoration:none}
.yy-pnav a:hover{color:var(--navy-900);background:rgba(201,162,39,.14)}
.yy-pnav a.on{background:var(--gold);color:#fff}
@media(max-width:700px){.yy-pnav-in{padding:9px 18px}.yy-pnav a{font-size:12.5px;padding:5px 10px}}