/* ============================================================
   新道优信建站 xdfyx.com — 全站共享样式 base.css
   风格：电竞少女风（浅粉+浅紫+纯白）× B端沉稳质感
   职责：Reset / 设计令牌 / 排版 / 统一导航页脚 / 浮动联系 / 横向卷轴 / 动效原语
   说明：页面级独有样式一律写在 css/page-<页面名>.css，禁止改动本文件
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--font);color:var(--c-text);background:var(--c-white);line-height:1.75;font-size:15px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{color:var(--c-ink);line-height:1.35;font-weight:700}
h1{font-size:clamp(28px,4.2vw,44px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:clamp(18px,2vw,22px)}
h4{font-size:17px}
p{line-height:1.9}

/* ---------- 2. 设计令牌 ---------- */
:root{
  --c-white:#FFFFFF;
  --c-bg-soft:#FBF7FC;
  --c-bg-pink:#FDF3F8;
  --c-bg-purple:#F6F2FE;
  --c-pink-100:#FBE7F0;
  --c-pink-200:#F7DCE6;
  --c-pink-300:#F1C4D8;
  --c-pink-400:#ED9FC2;
  --c-purple-100:#EFE8FC;
  --c-purple-200:#DCD0F7;
  --c-purple-300:#C5AEEF;
  --c-purple-400:#A98AE6;
  --c-ink:#33263B;
  --c-text:#6E5F74;
  --c-muted:#9A8CA0;
  --c-line:#F0E6F2;
  --grad-main:linear-gradient(135deg,#F2A6CC 0%,#C5AEEF 100%);
  --grad-soft:linear-gradient(135deg,#FDF3F8 0%,#F3EDFC 100%);
  --grad-text:linear-gradient(120deg,#E88BB8,#9D7BE4);
  --grad-dark:linear-gradient(135deg,#4A3555 0%,#33263B 100%);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow-soft:0 12px 40px rgba(194,150,209,.14);
  --shadow-card:0 6px 24px rgba(194,150,209,.12);
  --nav-h:72px;
  --maxw:1200px;
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 布局与通用组件 ---------- */
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.sec{padding:84px 0}
.sec-alt{background:var(--c-bg-soft)}
.sec-head{margin-bottom:44px}
.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--c-purple-400);margin-bottom:14px}
.sec-eyebrow::before{content:"";width:26px;height:2px;background:var(--grad-main);border-radius:2px}
.sec-title{font-weight:800;letter-spacing:.01em}
.grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-desc{margin-top:14px;max-width:760px}
.sec-head-center{text-align:center}
.sec-head-center .sec-eyebrow::before{display:none}
.sec-head-center .sec-desc{margin-left:auto;margin-right:auto}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:999px;font-size:15px;font-weight:600;transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s;white-space:nowrap}
.btn-primary{background:var(--grad-main);color:#fff;box-shadow:0 10px 26px rgba(197,174,239,.45)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(197,174,239,.55)}
.btn-ghost{background:#fff;border:1.5px solid var(--c-purple-200);color:var(--c-ink)}
.btn-ghost:hover{background:var(--c-bg-pink);border-color:var(--c-pink-300);transform:translateY(-3px)}
.btn-sm{padding:9px 20px;font-size:14px}
.btn-lg{padding:16px 38px;font-size:16px}

.tag{display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;font-size:12px;font-weight:600;background:var(--c-purple-100);color:var(--c-purple-400)}
.chip{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:12px;background:#fff;border:1px solid var(--c-line);color:var(--c-muted)}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
.breadcrumb a{color:var(--c-purple-400);transition:color .25s}
.breadcrumb a:hover{color:var(--c-pink-400)}
.breadcrumb i{font-style:normal;color:var(--c-purple-200)}

/* ---------- 4. 顶部信息条 ---------- */
.topbar{background:var(--grad-dark);color:#E9DDF0;font-size:13px}
.topbar-in{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:16px}
.topbar-contact{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.topbar-item{display:inline-flex;align-items:center;gap:6px;color:#EFE4F6;transition:color .25s}
a.topbar-item:hover{color:#fff}
.topbar-item svg{color:var(--c-pink-300);flex:none}
.topbar-slogan{margin:0;color:#C9BBD3;letter-spacing:.04em}

/* ---------- 5. 主导航 ---------- */
.site-nav{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:box-shadow .35s var(--ease),background .35s}
.site-nav.scrolled{box-shadow:0 8px 30px rgba(194,150,209,.16)}
.nav-in{display:flex;align-items:center;justify-content:space-between;min-height:var(--nav-h);gap:18px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand img{width:44px;height:44px;object-fit:contain;border-radius:10px}
.brand-name{font-size:19px;font-weight:800;color:var(--c-ink);letter-spacing:.02em;white-space:nowrap}
.brand-name em{font-style:normal;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;padding:9px 14px;font-size:15px;font-weight:600;color:var(--c-text);border-radius:10px;transition:color .25s,background .25s;white-space:nowrap}
.nav-links a:hover{color:var(--c-ink);background:var(--c-bg-pink)}
.nav-links a.on{color:var(--c-ink)}
.nav-links a.on::after{content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);width:18px;height:3px;border-radius:3px;background:var(--grad-main)}
.nav-cta{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:999px;background:var(--grad-main);color:#fff;font-weight:700;font-size:14px;box-shadow:0 8px 20px rgba(197,174,239,.4);transition:transform .3s var(--ease),box-shadow .3s;flex:none;letter-spacing:.02em}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(197,174,239,.5)}
.nav-cta-dot{width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.35);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.nav-burger{display:none;flex-direction:column;gap:5px;width:42px;height:42px;align-items:center;justify-content:center;border-radius:12px;background:var(--c-bg-pink);flex:none}
.nav-burger span{width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .3s var(--ease),opacity .3s}
.site-nav.open .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-nav.open .nav-burger span:nth-child(2){opacity:0}
.site-nav.open .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 6. 页脚 ---------- */
.site-footer{background:var(--grad-dark);color:#B9A9C4;font-size:14px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.8fr;gap:40px;padding:64px 0 48px}
.footer-col h4{color:#F3E7F8;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.06em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:#B9A9C4;transition:color .25s,padding-left .25s}
.footer-col ul a:hover{color:#fff;padding-left:4px}
.footer-col-brand .brand-name{color:#fff}
.footer-desc{margin:16px 0 18px;font-size:13.5px;line-height:1.9;color:#A997B2}
.footer-contact li{display:flex;align-items:center;gap:8px;margin-bottom:10px;color:#D8CBE0}
.footer-contact a{color:#D8CBE0}
.footer-contact a:hover{color:#fff}
.footer-col-wide h4{margin-bottom:16px}
.footer-city{display:grid;grid-template-columns:repeat(4,1fr);column-gap:14px;row-gap:4px}
.footer-city li{margin-bottom:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:20px 0}
.footer-bottom-in{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:#8F7E9B}
.footer-bottom-in a{color:#C9BBD3}
.footer-bottom-in a:hover{color:#fff}
.footer-bottom-contact{letter-spacing:.03em}

/* ---------- 7. 浮动联系条 + 移动端底部条 ---------- */
.float-bar{position:fixed;right:20px;top:50%;transform:translateY(-50%);z-index:300;display:flex;flex-direction:column;gap:10px}
.float-bar-item{width:52px;height:52px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;border-radius:16px;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);box-shadow:var(--shadow-card);color:var(--c-ink);font-size:11px;font-weight:600;transition:background .3s,color .3s,transform .3s var(--ease);border:1px solid var(--c-line)}
.float-bar-item svg{color:var(--c-purple-400);transition:color .3s}
.float-bar-item:hover{background:var(--grad-main);color:#fff;transform:translateY(-3px)}
.float-bar-item:hover svg{color:#fff}
.float-bar-top{opacity:0;pointer-events:none;transition:opacity .35s,background .3s,transform .3s}
.float-bar-top.show{opacity:1;pointer-events:auto}
.mobile-bar{display:none}

/* ---------- 8. 横向卷轴签名交互 ---------- */
.h-scroll{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;padding:6px 4px 18px;scrollbar-width:none}
.h-scroll::-webkit-scrollbar{display:none}
.h-scroll-item{flex:0 0 auto;scroll-snap-align:start}
.h-scroll-hint{font-size:12.5px;color:var(--c-muted);display:flex;align-items:center;gap:6px;margin-top:6px}
.h-scroll-hint svg{animation:slideHint 1.6s ease-in-out infinite}
@keyframes slideHint{0%,100%{transform:translateX(0)}50%{transform:translateX(6px)}}

/* ---------- 9. 滚动渐入动效 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .65s var(--ease),transform .65s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.h-scroll{scroll-behavior:auto}}

/* ---------- 10. 内页 Hero 基础 ---------- */
.page-hero{position:relative;background:var(--grad-soft);padding:64px 0 72px;overflow:hidden}
.page-hero .hero-in{position:relative;z-index:2}
.page-hero h1{margin:18px 0 14px;font-weight:800}
.page-hero .hero-desc{max-width:680px;color:var(--c-text)}
.page-hero .hero-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:26px}
.page-hero .hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.16;z-index:0}

/* ---------- 11. 表单基础 ---------- */
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13.5px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.form-field input,.form-field select,.form-field textarea{width:100%;padding:12px 16px;border:1.5px solid var(--c-line);border-radius:12px;background:#fff;color:var(--c-ink);outline:none;transition:border-color .25s,box-shadow .25s}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--c-purple-300);box-shadow:0 0 0 4px rgba(197,174,239,.18)}
.form-field textarea{min-height:120px;resize:vertical}

/* ---------- 12. 响应式 ---------- */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col-wide{grid-column:1/-1}
  .footer-city{grid-template-columns:repeat(5,1fr)}
  .nav-cta{display:none}
}
@media (max-width:860px){
  .topbar-slogan{display:none}
  .nav-burger{display:flex}
  .nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;background:rgba(255,255,255,.98);backdrop-filter:blur(16px);padding:12px 24px 22px;box-shadow:0 24px 40px rgba(194,150,209,.18);display:none}
  .site-nav.open .nav-links{display:flex}
  .nav-links a{padding:13px 10px;border-bottom:1px solid var(--c-line);border-radius:0}
  .nav-links a.on::after{left:10px;transform:none;width:14px;bottom:6px}
  .sec{padding:60px 0}
  .float-bar{right:12px}
  .float-bar-item{width:46px;height:46px;font-size:10px}
}
@media (max-width:640px){
  .topbar{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 36px}
  .footer-col-brand{grid-column:1/-1}
  .footer-city{grid-template-columns:repeat(3,1fr)}
  .footer-bottom-in{flex-direction:column;align-items:flex-start;gap:8px}
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:300;background:var(--grad-main);box-shadow:0 -6px 24px rgba(194,150,209,.35)}
  .mobile-bar-item{flex:1;display:flex;align-items:center;justify-content:center;gap:7px;padding:13px 0;color:#fff;font-size:14px;font-weight:600}
  .mobile-bar-item + .mobile-bar-item{border-left:1px solid rgba(255,255,255,.35)}
  .mobile-bar-item svg{flex:none}
  body{padding-bottom:0}
  .page-hero{padding:48px 0 56px}
}