/* ============================================================
   万欧国际官网 · 共享设计系统 site.css
   设计令牌 + 导航/页脚/悬浮条 + 通用组件
============================================================ */
:root{
  --indigo:#6366F1; --violet:#8B5CF6; --lavender:#A78BFA; --cyan:#22D3EE;
  --ink:#0B1226; --ink2:#39415C; --ink3:#68718C; --ink4:#9AA2BC;
  --bg:#F5F7FE; --bg2:#EEF1FD; --card:#FFFFFF; --line:#E5E9F7; --deep:#10163A;
  --ok:#059669; --warn:#D97706; --bad:#DC2626;
  --grad:linear-gradient(120deg,#6366F1 0%,#8B5CF6 52%,#A78BFA 100%);
  --grad-soft:linear-gradient(120deg,rgba(99,102,241,.10),rgba(139,92,246,.06));
  --sh-sm:0 1px 2px rgba(11,18,38,.04),0 6px 20px rgba(99,102,241,.06);
  --sh-md:0 6px 16px rgba(11,18,38,.05),0 20px 56px rgba(99,102,241,.10);
  --sh-lg:0 12px 32px rgba(11,18,38,.08),0 40px 100px rgba(99,102,241,.18);
  --r1:14px; --r2:20px; --r3:28px; --r4:36px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --container:min(1440px,100vw - clamp(32px,4vw,96px));
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:rgba(99,102,241,.2)}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer;border:none;background:none}
li{list-style:none}
svg{display:block}
input,select,textarea{font-family:inherit}
.wrap{width:var(--container);margin:0 auto}
.gt{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec{padding:clamp(60px,7vw,104px) 0;position:relative}
.sec-head{max-width:760px;margin-bottom:clamp(34px,4vw,54px)}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{font-size:clamp(28px,3vw,44px);font-weight:900;letter-spacing:-1px;line-height:1.22;margin:20px 0 16px}
.sec-head p{font-size:clamp(14px,1.15vw,17px);color:var(--ink3);line-height:1.85}
.tag{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:999px;background:rgba(99,102,241,.08);border:1px solid rgba(99,102,241,.18);color:var(--indigo);font-size:13px;font-weight:700;letter-spacing:1px}
.tag i{width:6px;height:6px;border-radius:50%;background:var(--grad);box-shadow:0 0 10px rgba(139,92,246,.9);animation:pulse 2s infinite}
@keyframes pulse{50%{transform:scale(1.6);opacity:.4}}
.rv{opacity:0;transform:translateY(28px);transition:opacity .75s cubic-bezier(.16,.68,.3,1),transform .75s cubic-bezier(.16,.68,.3,1)}
.rv.on{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:13px;transition:.3s;position:relative;overflow:hidden}
.btn-grad{background:var(--grad);color:#fff;padding:12px 26px;font-size:14px;box-shadow:0 8px 24px rgba(99,102,241,.38)}
.btn-grad::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%);transform:translateX(-100%);transition:.6s}
.btn-grad:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(99,102,241,.5)}
.btn-grad:hover::after{transform:translateX(100%)}
.btn-grad:disabled{opacity:.6;cursor:not-allowed;transform:none}
.btn-ghost{padding:11px 22px;font-size:14px;color:var(--ink2);border:1px solid var(--line);background:#fff;font-weight:600}
.btn-ghost:hover{border-color:var(--lavender);color:var(--indigo);background:rgba(99,102,241,.05)}

/* ============ 顶部信息条 / 导航 ============ */
.topbar{background:linear-gradient(100deg,rgba(99,102,241,.09),rgba(139,92,246,.07) 55%,rgba(34,211,238,.06));border-bottom:1px solid rgba(99,102,241,.12);color:var(--ink3);font-size:12px;position:relative;z-index:60}
.topbar-in{width:calc(100vw - clamp(32px,4vw,96px));margin:0 auto;display:flex;justify-content:space-between;align-items:center;height:32px;gap:24px}
.topbar span{display:inline-flex;align-items:center;gap:7px;opacity:.9;white-space:nowrap}
.topbar b{color:var(--indigo);font-weight:700}
.tsep{width:3px;height:3px;border-radius:50%;background:rgba(99,102,241,.35);margin:0 14px;flex-shrink:0}
.tb-dot{width:6px;height:6px;border-radius:50%;background:#34D399;box-shadow:0 0 6px rgba(52,211,153,.8);animation:pulse 2s infinite;flex-shrink:0}
.nav{position:sticky;top:0;z-index:90;background:rgba(245,247,254,.85);backdrop-filter:blur(20px) saturate(1.7);-webkit-backdrop-filter:blur(20px) saturate(1.7);border-bottom:1px solid var(--line)}
.nav-in{width:calc(100vw - clamp(32px,4vw,96px));margin:0 auto;display:flex;align-items:center;height:78px;gap:clamp(16px,2vw,44px)}
.logo{display:flex;align-items:center;flex-shrink:0}
.logo img{height:42px;width:auto;display:block}
.nav-links{display:flex;gap:2px;flex:1;justify-content:center}
.nav-links a{padding:10px clamp(8px,1vw,15px);border-radius:10px;font-size:15px;color:var(--ink2);font-weight:500;transition:.25s;white-space:nowrap}
.nav-links a:hover{color:var(--indigo);background:rgba(99,102,241,.08)}
.nav-links a.on{color:var(--indigo);font-weight:700}
/* 智能工具 下拉子分类 */
.nav-drop{position:relative;display:inline-flex}
.nav-drop>a{display:inline-flex;align-items:center;gap:5px}
.nd-caret{width:13px;height:13px;transition:.3s;flex-shrink:0}
.nav-drop:hover .nd-caret{transform:rotate(180deg)}
.nd-panel{position:absolute;top:100%;left:50%;transform:translate(-50%,10px);padding-top:12px;opacity:0;visibility:hidden;transition:.25s;z-index:99}
.nav-drop:hover .nd-panel,.nav-drop:focus-within .nd-panel{opacity:1;visibility:visible;transform:translate(-50%,0)}
.nd-grid{display:flex;flex-direction:column;gap:3px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--sh-lg);padding:9px;min-width:264px}
.nd-item{display:flex;flex-direction:column;gap:2px;padding:11px 14px;border-radius:12px;transition:.2s;position:relative}
.nd-item:hover{background:var(--grad-soft)}
.nd-item .nd-t{font-size:14px;font-weight:700;color:var(--ink);display:flex;align-items:center;gap:8px}
.nd-item .nd-t::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad);flex-shrink:0}
.nd-item .nd-d{font-size:12px;color:var(--ink4);padding-left:14px}
.mm-sub{padding:10px 16px 10px 30px !important;font-size:13.5px !important;font-weight:500 !important;color:var(--ink3) !important}
.nav-cta{display:flex;gap:12px;flex-shrink:0}
.nav-burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;place-items:center}
.nav-burger svg{width:20px;height:20px;color:var(--ink2)}
.mobile-menu{display:none;position:fixed;inset:0;z-index:200;background:rgba(11,18,38,.5);backdrop-filter:blur(4px)}
.mobile-menu.open{display:block}
.mm-panel{position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);background:#fff;padding:26px;overflow-y:auto;animation:mmIn .3s cubic-bezier(.2,.7,.3,1)}
@keyframes mmIn{from{transform:translateX(60px);opacity:0}}
.mm-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.mm-head img{height:36px}
.mm-close{width:40px;height:40px;border-radius:11px;border:1px solid var(--line);display:grid;place-items:center}
.mm-links{display:flex;flex-direction:column;gap:4px}
.mm-links a{padding:14px 16px;border-radius:12px;font-size:15.5px;font-weight:600;color:var(--ink2);transition:.25s}
.mm-links a:hover,.mm-links a.on{background:rgba(99,102,241,.08);color:var(--indigo)}
.mm-cta{margin-top:18px;display:grid;gap:10px}

/* ============ 页脚 ============ */
footer{background:var(--deep);color:#8B93C9}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr 1fr;gap:clamp(24px,2.6vw,52px);padding:clamp(48px,5vw,72px) 0 clamp(32px,4vw,48px)}
.foot-brand .logo img{height:40px;background:#fff;padding:6px 14px;border-radius:12px}
.foot-brand p{font-size:13.5px;line-height:2;margin-top:20px;max-width:340px}
footer h5{color:#fff;font-size:15px;font-weight:800;margin-bottom:22px}
.foot-links{display:flex;flex-direction:column;gap:13px}
.foot-links a{font-size:13.5px;transition:.25s}
.foot-links a:hover{color:#C7D2FE;transform:translateX(4px)}
.foot-contact li{display:flex;gap:11px;font-size:13.5px;margin-bottom:15px;line-height:1.7}
.foot-contact svg{width:16px;height:16px;color:#818CF8;flex-shrink:0;margin-top:2px}
.foot-contact b{color:#C7D2FE;font-weight:600}
.foot-qr{background:rgba(255,255,255,.05);border:1px solid rgba(167,139,250,.22);border-radius:18px;padding:18px;text-align:center}
.foot-qr img{width:118px;height:118px;border-radius:12px;background:#fff;padding:6px}
.foot-qr span{display:block;margin-top:12px;font-size:12.5px;color:#A5ACD9}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px}
.foot-bottom a{color:#8B93C9}
.foot-bottom a:hover{color:#C7D2FE}

/* ============ 右侧悬浮条 ============ */
.side-float{position:fixed;right:20px;bottom:24px;z-index:85;display:flex;flex-direction:column;gap:10px}
.sf-item{position:relative;width:50px;height:50px;border-radius:14px;background:#fff;border:1px solid var(--line);box-shadow:var(--sh-md);display:grid;place-items:center;transition:.3s;cursor:pointer}
.sf-item svg{width:21px;height:21px;color:var(--indigo)}
.sf-item:hover{background:var(--grad);transform:translateY(-4px)}
.sf-item:hover svg{color:#fff}
.sf-pop{position:absolute;right:62px;bottom:0;transform:translateX(8px);opacity:0;pointer-events:none;transition:.3s;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-lg);padding:16px;text-align:center;white-space:nowrap}
.sf-item:hover .sf-pop{opacity:1;transform:translateX(0);pointer-events:auto}
.sf-pop img{width:132px;height:132px;border-radius:10px;display:block}
.sf-pop .p-t{font-size:13px;font-weight:800;color:var(--ink);margin-top:10px}
.sf-pop .p-s{font-size:11.5px;color:var(--ink4);margin-top:2px}
.sf-pop .p-phone{font-size:17px;font-weight:900;color:var(--indigo);padding:6px 10px}
#toTop{opacity:0;pointer-events:none;transition:.35s}
#toTop.show{opacity:1;pointer-events:auto}

/* ============ Toast ============ */
#toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:13px 26px;border-radius:12px;font-size:14px;font-weight:600;opacity:0;pointer-events:none;transition:.35s;z-index:300;box-shadow:0 16px 40px rgba(0,0,0,.3);max-width:86vw;text-align:center}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ============ 页面 Hero（内页通用） ============ */
.page-hero{padding:clamp(34px,4.5vw,64px) 0 clamp(26px,3vw,44px);position:relative;overflow:visible;
  background:radial-gradient(800px 400px at 90% -20%,rgba(139,92,246,.14),transparent 60%),radial-gradient(600px 360px at 0% 120%,rgba(34,211,238,.08),transparent 60%),var(--bg)}
.page-hero h1{font-size:clamp(30px,3.4vw,48px);font-weight:900;letter-spacing:-1.5px;margin:18px 0 14px}
.page-hero .sub{font-size:clamp(14px,1.15vw,16.5px);color:var(--ink3);line-height:1.85;max-width:680px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink4);margin-bottom:6px}
.crumbs a{color:var(--indigo);font-weight:600}
.crumbs a:hover{text-decoration:underline}

/* ============ 卡片/价格/服务（业务页复用） ============ */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,1.6vw,24px)}
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--r1);padding:26px 24px;transition:.35s cubic-bezier(.2,.7,.3,1);position:relative;box-shadow:var(--sh-sm)}
.price-card:hover{transform:translateY(-7px);box-shadow:var(--sh-md);border-color:rgba(99,102,241,.35)}
.hot-tag{position:absolute;top:-11px;right:18px;background:linear-gradient(135deg,#F59E0B,#F97316);color:#fff;font-size:11px;font-weight:800;padding:4px 13px;border-radius:999px;box-shadow:0 5px 14px rgba(249,115,22,.4)}
.pc-country{font-size:12.5px;color:var(--ink4);font-weight:700;letter-spacing:1px;display:flex;align-items:center;gap:9px}
.pc-country i{width:22px;height:15px;border-radius:3px;display:inline-block;box-shadow:0 1px 4px rgba(0,0,0,.15)}
.pc-name{font-size:17px;font-weight:800;margin:10px 0 14px}
.pc-price{display:flex;align-items:baseline;gap:9px}
.pc-price b{font-size:30px;font-weight:900;font-variant-numeric:tabular-nums;letter-spacing:-1px}
.pc-price b::before{content:"¥";font-size:16px;font-weight:800;margin-right:2px}
.pc-price s{font-size:13px;color:var(--ink4)}
.pc-cycle{font-size:12.5px;color:var(--ink3);margin-top:10px;display:flex;align-items:center;gap:6px}
.pc-cycle svg{width:13px;height:13px;color:var(--lavender)}
.pc-btn{margin-top:20px;width:100%;padding:11px;border-radius:11px;font-size:13.5px;font-weight:700;color:var(--indigo);background:rgba(99,102,241,.08);transition:.3s}
.price-card:hover .pc-btn{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(99,102,241,.4)}
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,1.6vw,24px)}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:var(--r1);padding:26px 24px;transition:.35s;box-shadow:var(--sh-sm)}
.svc-card:hover{transform:translateY(-7px);box-shadow:var(--sh-md);border-color:rgba(99,102,241,.35)}
.svc-card h4{font-size:16.5px;font-weight:800;margin:14px 0 8px}
.svc-card p{font-size:13px;color:var(--ink3);line-height:1.75}
.svc-ico{width:46px;height:46px;border-radius:13px;background:var(--grad-soft);border:1px solid rgba(99,102,241,.18);display:grid;place-items:center}
.svc-ico svg{width:22px;height:22px;color:var(--indigo)}

/* ============ FAQ 手风琴 ============ */
.faq-list{max-width:960px;margin:0 auto;display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.3s}
.faq-item.open{border-color:rgba(99,102,241,.4);box-shadow:var(--sh-sm)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;font-size:16px;font-weight:700;text-align:left;color:var(--ink)}
.faq-q .fq-ico{width:30px;height:30px;border-radius:9px;background:rgba(99,102,241,.09);display:grid;place-items:center;flex-shrink:0;transition:.35s}
.faq-q .fq-ico svg{width:15px;height:15px;color:var(--indigo);transition:.35s}
.faq-item.open .fq-ico{background:var(--grad)}
.faq-item.open .fq-ico svg{color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .45s cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 26px 24px;font-size:14.5px;color:var(--ink3);line-height:1.9}

/* ============ 留资 CTA（通用） ============ */
.lead-panel{border-radius:var(--r3);background:linear-gradient(115deg,#1E1B4B 0%,#4338CA 48%,#7C3AED 100%);padding:clamp(30px,3.5vw,48px);position:relative;overflow:hidden;color:#fff}
.lead-panel::before{content:"";position:absolute;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(167,139,250,.38),transparent 60%);top:-280px;right:-140px}
.lead-panel::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);background-size:26px 26px;opacity:.5}
.lead-in{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.lead-in h2{font-size:clamp(22px,2.4vw,32px);font-weight:900;letter-spacing:-.5px;line-height:1.3}
.lead-in p{margin-top:12px;color:#C7D2FE;font-size:14.5px;line-height:1.8}
.lead-form{background:rgba(255,255,255,.1);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.22);border-radius:20px;padding:24px;display:grid;gap:12px}
.lead-form input,.lead-form textarea,.lead-form select{border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.12);border-radius:12px;padding:13px 16px;font-size:14.5px;color:#fff;outline:none;transition:.3s;width:100%}
.lead-form input::placeholder,.lead-form textarea::placeholder{color:rgba(255,255,255,.6)}
.lead-form input:focus,.lead-form textarea:focus{border-color:#fff;background:rgba(255,255,255,.2)}
.lead-form select option{color:var(--ink)}
.lead-form .btn-white{background:#fff;color:#4338CA;padding:14px;font-size:15px;border-radius:12px;font-weight:800;box-shadow:0 10px 28px rgba(0,0,0,.25)}
.lead-form .btn-white:hover{transform:translateY(-2px)}
.lead-form .btn-white:disabled{opacity:.6;transform:none}
.lead-form small{color:rgba(255,255,255,.65);font-size:12px;text-align:center}

/* ============ 响应式 ============ */
@media(max-width:1280px){
  .price-grid,.svc-grid{grid-template-columns:repeat(3,1fr)}
  .side-float{display:none}
}
@media(max-width:1024px){
  .nav-links{display:none}
  .nav-burger{display:grid}
  .foot-grid{grid-template-columns:1fr 1fr;gap:40px}
  .lead-in{grid-template-columns:1fr}
}
@media(max-width:640px){
  .price-grid,.svc-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .topbar-in{justify-content:center}
  .topbar-in>div:last-child{display:none}
  .dsh-body{grid-template-columns:1fr}
  .dsh-side{display:none}
}