/* ============================================================
   wins-chrome.com — 全站共享样式
   设计：Chrome 风格，蓝白主色，现代简洁
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Google+Sans:wght@400;500;700&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --cr-blue:   #1A73E8;
  --cr-red:    #EA4335;
  --cr-yellow: #FBBC04;
  --cr-green:  #34A853;
  --cr-dark:   #202124;
  --cr-gray1:  #5F6368;
  --cr-gray2:  #9AA0A6;
  --cr-gray3:  #DADCE0;
  --cr-bg:     #F8F9FA;
  --cr-white:  #FFFFFF;
  --radius:    12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 6px rgba(32,33,36,.12);
  --shadow:    0 4px 20px rgba(32,33,36,.14);
  --shadow-lg: 0 12px 40px rgba(32,33,36,.18);
  --trans:     .22s cubic-bezier(.4,0,.2,1);
  --font-main: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei UI', sans-serif;
  --max-w:     1200px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-main);color:var(--cr-dark);background:var(--cr-white);line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}

/* ───── HEADER ───── */
.site-header{
  position:sticky;top:0;z-index:999;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--cr-gray3);
  box-shadow:0 1px 8px rgba(32,33,36,.06);
}
.hdr-inner{
  max-width:var(--max-w);margin:0 auto;padding:0 28px;
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
/* Logo */
.logo{display:flex;align-items:center;gap:10px;font-size:1.22rem;font-weight:900;color:var(--cr-dark);letter-spacing:-.4px}
.logo-ring{width:36px;height:36px;flex-shrink:0}
/* Nav */
.site-nav{display:flex;align-items:center;gap:2px}
.site-nav a{padding:8px 14px;border-radius:8px;font-size:.9rem;font-weight:500;color:var(--cr-gray1);transition:color var(--trans),background var(--trans)}
.site-nav a:hover,.site-nav a.active{color:var(--cr-blue);background:rgba(26,115,232,.08)}
/* CTA */
.hdr-dl{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--cr-blue);color:#fff;
  padding:9px 22px;border-radius:100px;
  font-size:.9rem;font-weight:700;
  transition:background var(--trans),box-shadow var(--trans),transform var(--trans);
}
.hdr-dl:hover{background:#1558b0;box-shadow:0 4px 16px rgba(26,115,232,.4);transform:translateY(-1px)}
/* Hamburger */
.menu-btn{display:none;background:none;border:none;cursor:pointer;padding:8px;color:var(--cr-dark)}

/* ───── FOOTER ───── */
.site-footer{background:#202124;color:rgba(255,255,255,.65);padding:64px 28px 32px}
.ftr-inner{max-width:var(--max-w);margin:0 auto}
.ftr-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.ftr-brand .logo{color:#fff;margin-bottom:14px}
.ftr-brand p{font-size:.86rem;line-height:1.85;max-width:270px;color:rgba(255,255,255,.5)}
.ftr-col h4{color:#fff;font-size:.9rem;font-weight:700;margin-bottom:16px;letter-spacing:.4px}
.ftr-col li{margin-bottom:9px}
.ftr-col li a{font-size:.86rem;color:rgba(255,255,255,.5);transition:color var(--trans)}
.ftr-col li a:hover{color:var(--cr-blue)}
.ftr-bottom{padding-top:24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.82rem;color:rgba(255,255,255,.4)}
.ftr-bottom a{color:rgba(255,255,255,.4)}
.ftr-bottom a:hover{color:rgba(255,255,255,.7)}
.ftr-disclaimer{font-size:.78rem;color:rgba(255,255,255,.3);margin-top:8px;max-width:640px}

/* ───── BUTTONS ───── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:100px;font-weight:700;font-size:1rem;cursor:pointer;border:none;transition:all var(--trans)}
.btn-primary{background:var(--cr-blue);color:#fff}
.btn-primary:hover{background:#1558b0;box-shadow:0 6px 20px rgba(26,115,232,.38);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--cr-blue);border:2px solid var(--cr-blue)}
.btn-white:hover{background:rgba(26,115,232,.06);transform:translateY(-2px)}
.btn-lg{padding:17px 44px;font-size:1.1rem;border-radius:100px}
.btn-xl{padding:20px 56px;font-size:1.2rem;border-radius:100px}

/* ───── LAYOUT HELPERS ───── */
.section{padding:88px 28px}
.section-sm{padding:56px 28px}
.container{max-width:var(--max-w);margin:0 auto}
.sec-tag{display:inline-block;background:rgba(26,115,232,.1);color:var(--cr-blue);font-size:.75rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;padding:4px 14px;border-radius:100px;margin-bottom:14px}
.sec-title{font-size:clamp(1.7rem,3vw,2.5rem);font-weight:900;color:var(--cr-dark);line-height:1.22;margin-bottom:16px}
.sec-sub{font-size:1rem;color:var(--cr-gray1);max-width:560px;margin:0 auto;line-height:1.85}
.sec-head{text-align:center;margin-bottom:56px}
.divider{width:48px;height:4px;background:var(--cr-blue);border-radius:4px;margin:20px auto 0}

/* ───── CARDS ───── */
.card{background:#fff;border-radius:var(--radius-lg);border:1.5px solid var(--cr-gray3);transition:transform var(--trans),box-shadow var(--trans),border-color var(--trans)}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(26,115,232,.3)}

/* ───── OS TABS ───── */
.os-tabs{display:flex;gap:6px;margin-bottom:24px;flex-wrap:wrap}
.os-tab{padding:8px 18px;border-radius:100px;border:1.5px solid var(--cr-gray3);font-size:.88rem;font-weight:500;color:var(--cr-gray1);cursor:pointer;transition:all var(--trans);background:#fff}
.os-tab:hover,.os-tab.active{background:var(--cr-blue);color:#fff;border-color:var(--cr-blue)}

/* ───── FEATURE ICON ───── */
.feat-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.fi-blue{background:rgba(26,115,232,.1);color:var(--cr-blue)}
.fi-green{background:rgba(52,168,83,.1);color:var(--cr-green)}
.fi-red{background:rgba(234,67,53,.1);color:var(--cr-red)}
.fi-yellow{background:rgba(251,188,4,.12);color:#E37400}

/* ───── BADGE ───── */
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:100px;font-size:.76rem;font-weight:700}
.badge-new{background:#E8F0FE;color:var(--cr-blue)}
.badge-stable{background:#E6F4EA;color:#137333}
.badge-v{background:#FFF3E0;color:#E37400}

/* ───── BREADCRUMB ───── */
.breadcrumb{display:flex;align-items:center;gap:6px;font-size:.84rem;color:var(--cr-gray2);padding:16px 0 0;flex-wrap:wrap}
.breadcrumb a{color:var(--cr-blue)}
.breadcrumb span{color:var(--cr-gray2)}

/* ───── PROGRESS / STATS ───── */
.stat-num{font-size:2.6rem;font-weight:900;color:var(--cr-blue);line-height:1}
.stat-label{font-size:.88rem;color:var(--cr-gray1);margin-top:4px}

/* ───── FAQ ───── */
.faq-item{border-bottom:1px solid var(--cr-gray3);padding:20px 0}
.faq-q{font-size:1rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--cr-dark)}
.faq-q::after{content:"›";font-size:1.4rem;transform:rotate(90deg);transition:transform var(--trans);color:var(--cr-gray2)}
.faq-item.open .faq-q::after{transform:rotate(-90deg)}
.faq-a{font-size:.93rem;color:var(--cr-gray1);line-height:1.8;max-height:0;overflow:hidden;transition:max-height .3s ease,padding .2s}
.faq-item.open .faq-a{max-height:400px;padding-top:10px}

/* ───── TABLE ───── */
.compare-table{width:100%;border-collapse:collapse;font-size:.92rem}
.compare-table th{background:var(--cr-bg);padding:13px 18px;text-align:left;font-weight:700;color:var(--cr-dark);border-bottom:2px solid var(--cr-gray3)}
.compare-table td{padding:13px 18px;border-bottom:1px solid var(--cr-gray3);color:var(--cr-gray1)}
.compare-table tr:last-child td{border-bottom:none}
.compare-table tr:hover td{background:rgba(26,115,232,.03)}
.check{color:var(--cr-green);font-size:1.1rem}
.cross{color:var(--cr-gray3);font-size:1.1rem}

/* ───── DOWNLOAD CARD ───── */
.dl-card{background:linear-gradient(135deg,#1A73E8 0%,#0d47a1 100%);border-radius:var(--radius-lg);color:#fff;padding:48px;position:relative;overflow:hidden}
.dl-card::before{content:"";position:absolute;top:-40px;right:-40px;width:240px;height:240px;border-radius:50%;background:rgba(255,255,255,.06)}
.dl-meta{font-size:.84rem;opacity:.75;margin-top:6px}
.dl-btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.dl-btn{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--cr-blue);padding:13px 30px;border-radius:100px;font-weight:700;font-size:.95rem;transition:all var(--trans)}
.dl-btn:hover{background:#f0f4ff;box-shadow:0 6px 20px rgba(0,0,0,.15);transform:translateY(-2px)}
.dl-btn-sec{background:rgba(255,255,255,.15);color:#fff;border:1.5px solid rgba(255,255,255,.35)}
.dl-btn-sec:hover{background:rgba(255,255,255,.25);color:#fff}

/* ───── HERO CHROME ICON ───── */
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.hero-icon-wrap .anim{animation:float 3.6s ease-in-out infinite}

/* ───── RESPONSIVE ───── */
@media(max-width:900px){
  .ftr-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:640px){
  .site-nav,.hdr-dl{display:none}
  .menu-btn{display:flex;align-items:center;justify-content:center}
  .section{padding:56px 18px}
  .section-sm{padding:36px 18px}
  .ftr-grid{grid-template-columns:1fr}
  .btn-xl{padding:16px 36px;font-size:1rem}
  .dl-card{padding:28px 22px}
}

/* Mobile nav overlay */
.mobile-nav{display:none;position:fixed;inset:64px 0 0 0;background:#fff;z-index:998;flex-direction:column;padding:20px;gap:4px;border-top:1px solid var(--cr-gray3)}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:14px 16px;border-radius:10px;font-size:1rem;font-weight:500;color:var(--cr-dark)}
.mobile-nav a:hover{background:var(--cr-bg)}
.mobile-nav .mn-dl{margin-top:8px;background:var(--cr-blue);color:#fff;border-radius:100px;text-align:center}