/* ==========================================================================
   饿饭加速器 efan · 全站样式表
   视觉设计升级版 · 原生 CSS · 无第三方依赖
   目录：变量 / 基础 / 按钮 / 容器 / 动效 / 导航 / Hero / 演示面板 /
       功能 / 节点 / 场景 / 极速 / 套餐 / FAQ / 评价 / 资讯 / CTA /
       页脚 / 子页头 / 下载 / 文章 / 侧栏 / 评论 / 翻页 / 站点地图 /
       404 / 响应式
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  /* 品牌色：电光蓝主色 + 紫罗兰辅色 + 薄荷绿点缀 */
  --brand:#4f6ef7;
  --brand-lt:#7f97ff;
  --brand-dk:#3350e0;
  --brand2:#7c4dff;
  --accent:#2dd4bf;
  --accent-lt:#5eead4;

  /* 中性色 */
  --ink:#0b1120;
  --ink2:#334155;
  --muted:#64748b;
  --line:#e9eef8;
  --line2:#dde5f3;
  --bg:#f5f8fd;

  /* 深色层级 */
  --dark:#05070f;
  --dark2:#0d1535;

  /* 渐变 */
  --grad:linear-gradient(135deg,#4f6ef7 0%,#7c4dff 100%);
  --grad2:linear-gradient(135deg,#2dd4bf 0%,#4f6ef7 100%);
  --grad-soft:linear-gradient(135deg,rgba(79,110,247,.1),rgba(124,77,255,.1));
  --grad-text:linear-gradient(100deg,#5eead4 0%,#8ea6ff 52%,#c4b5fd 100%);

  /* 圆角 */
  --r-xs:12px;
  --r-sm:16px;
  --r:22px;
  --r-lg:30px;

  /* 阴影：多层叠加 + 品牌色投影，避免灰糊成一片 */
  --sh-xs:0 1px 2px rgba(11,17,32,.04);
  --sh-sm:0 2px 4px rgba(11,17,32,.03),0 8px 20px rgba(11,17,32,.06);
  --sh:0 4px 10px rgba(11,17,32,.04),0 18px 44px rgba(11,17,32,.1);
  --sh-lg:0 8px 18px rgba(11,17,32,.05),0 34px 74px rgba(11,17,32,.16);
  --sh-brand:0 10px 24px rgba(79,110,247,.3),0 2px 6px rgba(79,110,247,.2);

  /* 动效曲线 */
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);

  --header-h:76px;
}

/* ---------- 2. 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:#fff;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
::selection{background:rgba(79,110,247,.22)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#c7d2e8;border-radius:20px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#adbde0}

/* ---------- 3. 按钮 ---------- */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 30px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  white-space:nowrap;
  overflow:hidden;
  isolation:isolate;
  transition:transform .35s var(--ease-spring),box-shadow .35s var(--ease),background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease);
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:var(--sh-brand)}
.btn-grad::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.45) 50%,transparent 70%);
  transform:translateX(-130%);
  transition:transform .8s var(--ease-out);
}
.btn-grad:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(79,110,247,.42),0 4px 10px rgba(79,110,247,.24)}
.btn-grad:hover::after{transform:translateX(130%)}
.btn-ghost{background:rgba(79,110,247,.06);color:var(--brand);border:1.5px solid rgba(79,110,247,.26)}
.btn-ghost:hover{background:rgba(79,110,247,.11);border-color:rgba(79,110,247,.55);transform:translateY(-3px);box-shadow:0 12px 28px rgba(79,110,247,.16)}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 12px 28px rgba(3,7,22,.2)}
.btn-light:hover{transform:translateY(-3px);box-shadow:0 20px 42px rgba(3,7,22,.3)}
.btn:active{transform:translateY(-1px) scale(.985)}

/* ---------- 4. 容器与区块 ---------- */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

.sec{position:relative;padding:clamp(74px,9vw,116px) 0}
.sec-head{max-width:740px;margin:0 auto clamp(38px,5vw,58px);text-align:center}
.sec-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 18px;
  margin-bottom:18px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  letter-spacing:1.4px;
  color:var(--brand);
  background:var(--grad-soft);
  border:1px solid rgba(79,110,247,.16);
}
.sec-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(79,110,247,.16)}
.sec-title{font-size:clamp(27px,3.4vw,42px);font-weight:800;line-height:1.24;letter-spacing:-.7px;color:var(--ink)}
.sec-sub{margin-top:16px;font-size:clamp(15.5px,1.35vw,17px);line-height:1.85;color:var(--muted)}

.grid{display:grid;gap:26px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* 深色区块内的标题文字 */
.scenario .sec-title,.testi .sec-title{color:#fff}
.scenario .sec-sub,.testi .sec-sub{color:#a9b5d9}
.scenario .sec-tag,.testi .sec-tag{color:var(--accent-lt);background:rgba(45,212,191,.1);border-color:rgba(45,212,191,.24)}
.scenario .sec-tag::before,.testi .sec-tag::before{background:var(--accent);box-shadow:0 0 0 3px rgba(45,212,191,.2)}

/* ---------- 5. 滚动淡入动效 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .85s var(--ease-out),transform .85s var(--ease-out)}
.reveal.in{opacity:1;transform:none}

/* 回到顶部 */
.to-top{
  position:fixed;
  right:26px;
  bottom:26px;
  z-index:900;
  width:48px;
  height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  color:#fff;
  background:var(--grad);
  box-shadow:0 14px 32px rgba(79,110,247,.4);
  opacity:0;
  visibility:hidden;
  transform:translateY(18px) scale(.9);
  transition:opacity .35s var(--ease),transform .45s var(--ease-spring),visibility .35s;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{transform:translateY(-4px) scale(1.05);box-shadow:0 20px 40px rgba(79,110,247,.48)}

/* ---------- 6. 顶部导航 ---------- */
.nav{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:1000;
  border-bottom:1px solid transparent;
  transition:background .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.nav.scrolled,.nav-solid{
  background:rgba(5,7,15,.78);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 14px 40px rgba(3,7,20,.34);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}

.logo{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:800;color:#fff}
.logo img{width:40px;height:40px;border-radius:12px;box-shadow:0 8px 22px rgba(79,110,247,.45),0 0 0 1px rgba(255,255,255,.1) inset}
.logo b{color:#fff;letter-spacing:.3px}

.menu{display:flex;align-items:center;gap:4px}
.menu>li{position:relative}
.menu>li>a{
  display:flex;
  align-items:center;
  gap:6px;
  padding:10px 16px;
  border-radius:11px;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.86);
  transition:color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease);
}
.menu>li>a:hover{color:#fff;background:rgba(255,255,255,.1);transform:translateY(-1px)}
.menu .arr{font-size:10px;opacity:.75;transition:transform .3s var(--ease)}

.drop{
  position:absolute;
  top:calc(100% + 12px);
  left:0;
  min-width:196px;
  padding:9px;
  border-radius:18px;
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:blur(20px);
  backdrop-filter:blur(20px);
  border:1px solid var(--line);
  box-shadow:0 30px 70px rgba(6,12,32,.26),0 2px 6px rgba(6,12,32,.06);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px) scale(.98);
  transform-origin:top left;
  transition:opacity .3s var(--ease-out),transform .3s var(--ease-out),visibility .3s;
}
.drop a{
  display:block;
  padding:10px 14px;
  border-radius:11px;
  font-size:14px;
  font-weight:500;
  color:var(--ink2);
  transition:background .2s var(--ease),color .2s var(--ease),padding-left .2s var(--ease);
}
.drop a:hover{background:var(--bg);color:var(--brand);padding-left:18px}

.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .btn{padding:10px 22px;font-size:14px}
.nav .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.nav .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.65)}
.nav .btn-grad{box-shadow:0 10px 26px rgba(79,110,247,.42)}

.burger{display:none;flex-direction:column;gap:5px;padding:8px;border-radius:10px}
.burger span{display:block;width:24px;height:2px;border-radius:2px;background:#fff;transition:transform .3s var(--ease),opacity .3s var(--ease)}

/* 桌面端下拉展开（仅宽屏生效，避免移动端 hover 干扰） */
@media(min-width:993px){
  .menu>li:hover .drop{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
  .menu>li:hover .arr{transform:rotate(180deg)}
}

/* ---------- 7. 首屏 Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:calc(var(--header-h) + 88px) 0 120px;
  color:#fff;
  background:
    radial-gradient(880px 500px at 86% -14%,rgba(124,77,255,.42),transparent 62%),
    radial-gradient(760px 460px at 4% 6%,rgba(45,212,191,.2),transparent 60%),
    linear-gradient(165deg,#05070f 0%,#0d1535 54%,#080c22 100%);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000,transparent 76%);
  mask-image:radial-gradient(circle at 50% 30%,#000,transparent 76%);
}
/* 缓慢漂移的极光光斑，给深色首屏一点呼吸感 */
.hero::after{
  content:"";
  position:absolute;
  top:-220px;
  right:-160px;
  width:620px;
  height:620px;
  border-radius:50%;
  pointer-events:none;
  background:radial-gradient(circle,rgba(79,110,247,.3),transparent 68%);
  filter:blur(24px);
  animation:aurora 16s ease-in-out infinite;
}
@keyframes aurora{
  0%,100%{transform:translate3d(0,0,0) scale(1)}
  50%{transform:translate3d(-34px,36px,0) scale(1.08)}
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.hero h1{font-size:clamp(33px,4.6vw,58px);font-weight:900;line-height:1.12;letter-spacing:-1.2px;margin-bottom:22px}
.hero h1 .hl{
  background:var(--grad-text);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero p{max-width:540px;margin-bottom:34px;font-size:17px;line-height:1.85;color:#b9c4e6}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:42px}
.stats{display:flex;gap:40px;flex-wrap:wrap}
.stat{position:relative;padding-left:20px}
.stat::before{
  content:"";
  position:absolute;
  left:0;
  top:7px;
  bottom:7px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--accent),var(--brand));
}
.stat b{
  display:block;
  font-size:33px;
  font-weight:800;
  letter-spacing:-.6px;
  background:linear-gradient(120deg,#ffffff,#a9bcff);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.stat span{font-size:13px;color:#96a3cc}

/* ---------- 8. 客户端界面截图 ---------- */
.demo.demo-plain{position:relative}
.demo-shot{display:block;width:100%;height:auto;border-radius:20px}
/* ---------- 9. 核心功能 ---------- */
.features{background:#fff}
.feature{
  position:relative;
  padding:32px;
  border-radius:var(--r);
  overflow:hidden;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--sh-xs);
  transition:transform .4s var(--ease-out),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.feature::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:var(--grad);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .45s var(--ease-out);
}
/* 悬停时右上角透出一层品牌色光晕 */
.feature::after{
  content:"";
  position:absolute;
  top:-70px;
  right:-70px;
  width:180px;
  height:180px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(79,110,247,.16),transparent 70%);
  opacity:0;
  pointer-events:none;
  transition:opacity .45s var(--ease);
}
.feature:hover{transform:translateY(-8px);box-shadow:var(--sh);border-color:rgba(79,110,247,.22)}
.feature:hover::before{transform:scaleX(1)}
.feature:hover::after{opacity:1}
.feature .ic{
  position:relative;
  z-index:1;
  width:56px;
  height:56px;
  margin-bottom:20px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:18px;
  font-size:23px;
  font-weight:700;
  color:#fff;
  background:var(--grad);
  box-shadow:0 12px 26px rgba(79,110,247,.3);
  transition:transform .45s var(--ease-spring);
}
.feature:hover .ic{transform:scale(1.08) rotate(-4deg)}
.feature h3{position:relative;z-index:1;font-size:19px;font-weight:700;margin-bottom:10px}
.feature p{position:relative;z-index:1;font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ---------- 10. 全球节点 ---------- */
.nodes{background:var(--bg)}
.node{
  display:flex;
  align-items:center;
  gap:16px;
  padding:22px 24px;
  border-radius:var(--r);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--sh-xs);
  transition:transform .35s var(--ease-out),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.node:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:rgba(79,110,247,.28)}
.node .flag{
  flex-shrink:0;
  width:50px;
  height:50px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:16px;
  font-size:15px;
  font-weight:800;
  letter-spacing:.5px;
  color:#fff;
  background:var(--grad);
  box-shadow:0 10px 22px rgba(79,110,247,.28);
}
.node h4{font-size:16px;font-weight:700;margin-bottom:3px}
.node p{font-size:12.5px;color:var(--muted)}
.node .ping{margin-left:auto;text-align:right}
.node .ping b{display:block;font-size:18px;font-weight:800;color:#0fa968}
.node .ping span{font-size:11.5px;color:var(--muted)}

/* ---------- 11. 应用场景 ---------- */
.scenario{
  background:
    radial-gradient(760px 420px at 88% 0%,rgba(124,77,255,.2),transparent 62%),
    linear-gradient(165deg,#06090f 0%,#0f1738 56%,#080d24 100%);
  color:#fff;
}
.scen{
  position:relative;
  padding:32px;
  border-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,255,255,.11),rgba(255,255,255,.04));
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 16px 40px rgba(2,6,24,.32);
  transition:transform .4s var(--ease-out),background .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease);
}
.scen:hover{transform:translateY(-6px);background:linear-gradient(180deg,rgba(255,255,255,.17),rgba(255,255,255,.07));border-color:rgba(45,212,191,.5);box-shadow:0 26px 54px rgba(2,6,24,.42)}
.scen .ic{
  display:flex;
  align-items:center;
  justify-content:center;
  width:52px;
  height:52px;
  margin-bottom:18px;
  border-radius:16px;
  font-size:23px;
  font-weight:700;
  color:var(--accent-lt);
  background:rgba(45,212,191,.12);
  border:1px solid rgba(45,212,191,.24);
  box-shadow:0 0 22px rgba(45,212,191,.16);
}
.scen h3{font-size:18px;font-weight:700;margin-bottom:10px;color:#fff}
.scen p{font-size:14px;line-height:1.85;color:#dbe3f8}

/* ---------- 12. 协议技术区块 ---------- */
.protocol{background:#fff}

/* ---------- 13. 极速体验（步骤） ---------- */
.speed{background:var(--bg)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.step{position:relative;text-align:center;padding:0 8px}
.step .num{
  position:relative;
  width:66px;
  height:66px;
  margin:0 auto 18px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  font-size:24px;
  font-weight:800;
  color:#fff;
  background:var(--grad);
  box-shadow:0 14px 30px rgba(79,110,247,.32);
  transition:transform .45s var(--ease-spring);
}
.step:hover .num{transform:translateY(-4px) scale(1.05)}
.step .num::after{content:"";position:absolute;inset:-7px;border-radius:50%;border:1px dashed rgba(79,110,247,.4)}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.step p{font-size:13.5px;line-height:1.8;color:var(--muted)}

/* ---------- 14. 价格套餐 ---------- */
.pricing{background:#fff}
.price{
  position:relative;
  padding:38px 32px;
  border-radius:var(--r-lg);
  text-align:center;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--sh-xs);
  transition:transform .4s var(--ease-out),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.price:hover{transform:translateY(-8px);box-shadow:var(--sh-lg);border-color:rgba(79,110,247,.3)}
.price.hot{
  background:linear-gradient(160deg,#4f6ef7 0%,#6d4bfa 55%,#7c4dff 100%);
  color:#fff;
  border:0;
  transform:scale(1.04);
  box-shadow:0 36px 72px rgba(79,110,247,.42),0 6px 16px rgba(79,110,247,.24);
}
.price.hot::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  pointer-events:none;
  background:radial-gradient(420px 220px at 80% 0%,rgba(255,255,255,.18),transparent 62%);
}
.price.hot:hover{transform:scale(1.04) translateY(-8px)}
.price .tag{
  position:absolute;
  top:-14px;
  left:50%;
  transform:translateX(-50%);
  padding:6px 18px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.5px;
  white-space:nowrap;
  color:#fff;
  background:linear-gradient(135deg,#fbbf24,#f97316);
  box-shadow:0 12px 26px rgba(249,115,22,.4);
}
.price .pname{position:relative;font-size:17px;font-weight:700;letter-spacing:.5px;margin-bottom:16px}
.price .pnum{position:relative;font-size:47px;font-weight:900;line-height:1;letter-spacing:-1.6px;margin-bottom:8px}
.price .pnum small{font-size:16px;font-weight:500;letter-spacing:0}
.price .pdesc{position:relative;font-size:13px;margin-bottom:24px;opacity:.75}
.price ul{position:relative;text-align:left;margin-bottom:28px}
.price ul li{display:flex;gap:10px;padding:11px 0;font-size:14px;border-bottom:1px dashed var(--line)}
.price.hot ul li{border-color:rgba(255,255,255,.22)}
.price ul li::before{content:"✓";flex-shrink:0;font-weight:800;color:#0fa968}
.price.hot ul li::before{color:#7ff0dd}
.price .btn{position:relative;width:100%}
.price.hot .btn{background:#fff;color:var(--brand);box-shadow:0 14px 30px rgba(0,0,0,.18)}

/* ---------- 15. 常见问题 ---------- */
.faq{background:var(--bg)}
.faq-list{max-width:880px;margin:0 auto}
.faq-item{
  margin-bottom:14px;
  border-radius:18px;
  overflow:hidden;
  background:#fff;
  border:1px solid var(--line);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease-out);
}
.faq-item:hover{border-color:rgba(79,110,247,.3);box-shadow:var(--sh-sm);transform:translateY(-2px)}
.faq-item.open{border-color:rgba(79,110,247,.35);box-shadow:var(--sh-sm)}
.faq-item.open:hover{transform:none}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 26px;
  font-size:16px;
  font-weight:600;
  text-align:left;
  color:var(--ink);
}
.faq-q .arr{
  flex-shrink:0;
  width:28px;
  height:28px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  font-size:18px;
  font-weight:400;
  color:var(--brand);
  background:var(--grad-soft);
  transition:transform .45s var(--ease-spring),background .3s var(--ease),color .3s var(--ease);
}
.faq-item.open .faq-q .arr{transform:rotate(135deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .42s var(--ease-out)}
.faq-item.open .faq-a{max-height:640px}
.faq-a p{padding:0 26px 24px;font-size:14.5px;line-height:1.9;color:var(--muted)}

/* ---------- 16. 用户评价 ---------- */
.testi{
  background:
    radial-gradient(760px 420px at 12% 0%,rgba(124,77,255,.2),transparent 62%),
    linear-gradient(165deg,#06090f 0%,#0f1738 58%,#080d24 100%);
  color:#fff;
}
.tcard{
  position:relative;
  padding:32px;
  border-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,255,255,.11),rgba(255,255,255,.04));
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 16px 40px rgba(2,6,24,.32);
  transition:transform .4s var(--ease-out),background .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease);
}
.tcard:hover{transform:translateY(-6px);background:linear-gradient(180deg,rgba(255,255,255,.17),rgba(255,255,255,.07));border-color:rgba(45,212,191,.45);box-shadow:0 26px 54px rgba(2,6,24,.42)}
.tcard .stars{margin-bottom:16px;font-size:15px;letter-spacing:3px;color:#fbbf24;text-shadow:0 0 16px rgba(251,191,36,.35)}
.tcard p{min-height:76px;margin-bottom:20px;font-size:14.5px;line-height:1.9;color:#dbe3f8}
.tcard .user{display:flex;align-items:center;gap:13px}
.tcard .av{
  width:46px;
  height:46px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:15px;
  font-size:17px;
  font-weight:700;
  color:#fff;
  background:var(--grad);
  box-shadow:0 10px 24px rgba(79,110,247,.38);
}
.tcard .user b{display:block;font-size:15px}
.tcard .user span{font-size:12px;color:#a9b5d9}

/* ---------- 17. 新闻资讯 ---------- */
.news{background:#fff}
.ncard{
  border-radius:var(--r);
  overflow:hidden;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--sh-xs);
  transition:transform .4s var(--ease-out),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.ncard:hover{transform:translateY(-8px);box-shadow:var(--sh-lg);border-color:rgba(79,110,247,.22)}
.ncard img{width:100%;height:188px;object-fit:cover;transition:transform .7s var(--ease-out)}
.ncard:hover img{transform:scale(1.06)}
.ncard .nc{padding:24px}
.ncard .nc .cat{
  display:inline-block;
  margin-bottom:12px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  background:var(--grad-soft);
  border:1px solid rgba(79,110,247,.14);
}
.ncard .nc h3{font-size:16.5px;font-weight:700;line-height:1.5;margin-bottom:12px}
.ncard .nc h3 a{transition:color .2s var(--ease)}
.ncard .nc h3 a:hover{color:var(--brand)}
.ncard .nc .date{font-size:12.5px;color:var(--muted)}

/* ---------- 18. 行动号召 CTA ---------- */
.cta{
  position:relative;
  overflow:hidden;
  padding:100px 0;
  text-align:center;
  color:#fff;
  background:linear-gradient(135deg,#4f6ef7 0%,#6d4bfa 56%,#7c4dff 100%);
}
.cta::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(620px 320px at 16% 4%,rgba(255,255,255,.24),transparent 60%),
    radial-gradient(660px 340px at 86% 96%,rgba(45,212,191,.34),transparent 62%);
}
.cta::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(circle at 50% 50%,#000,transparent 72%);
  mask-image:radial-gradient(circle at 50% 50%,#000,transparent 72%);
}
.cta .wrap{position:relative;z-index:1}
.cta h2{font-size:clamp(27px,3.6vw,42px);font-weight:800;letter-spacing:-.7px;margin-bottom:16px}
.cta p{font-size:16px;opacity:.92;margin-bottom:32px}
.cta .btn{padding:16px 42px;font-size:16px;background:#fff;color:var(--brand);box-shadow:0 18px 42px rgba(0,0,0,.22)}
.cta .btn:hover{transform:translateY(-3px);box-shadow:0 28px 56px rgba(0,0,0,.3)}

/* ---------- 19. 页脚 ---------- */
.footer{position:relative;padding:76px 0 26px;color:#9fb0d6;background:var(--dark)}
.footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(79,110,247,.65),rgba(45,212,191,.65),transparent);
}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;margin-bottom:46px}
.f-grid h4{margin-bottom:20px;font-size:15px;font-weight:700;color:#fff}
.f-grid a{display:block;padding:7px 0;font-size:14px;color:#9fb0d6;transition:color .22s var(--ease),transform .22s var(--ease)}
.f-grid a:hover{color:var(--accent-lt);transform:translateX(4px)}
.f-logo{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.f-logo img{width:38px;height:38px;border-radius:11px}
.f-logo b{font-size:18px;font-weight:800;color:#fff}
.f-about{font-size:14px;line-height:1.9}
.f-copy{margin-top:8px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:13px;color:#7d8cb4}

/* ---------- 20. 子页面头部 ---------- */
.phero{
  position:relative;
  overflow:hidden;
  padding:calc(var(--header-h) + 78px) 0 88px;
  text-align:center;
  color:#fff;
  background:
    radial-gradient(820px 430px at 80% -20%,rgba(124,77,255,.4),transparent 60%),
    radial-gradient(720px 400px at 12% -10%,rgba(45,212,191,.2),transparent 60%),
    linear-gradient(165deg,#05070f 0%,#0d1535 58%,#080c22 100%);
}
.phero::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(circle at 50% 18%,#000,transparent 76%);
  mask-image:radial-gradient(circle at 50% 18%,#000,transparent 76%);
}
.phero::after{
  content:"";
  position:absolute;
  top:-200px;
  left:-120px;
  width:520px;
  height:520px;
  border-radius:50%;
  pointer-events:none;
  background:radial-gradient(circle,rgba(79,110,247,.26),transparent 68%);
  filter:blur(22px);
  animation:aurora 18s ease-in-out infinite;
}
.phero .wrap{position:relative;z-index:1}
.phero h1{font-size:clamp(29px,3.9vw,44px);font-weight:900;letter-spacing:-1.1px;line-height:1.16;margin-bottom:16px}
.phero p{max-width:660px;margin:0 auto;font-size:16.5px;line-height:1.85;color:#b9c4e6}

.crumb{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:22px;font-size:13px;color:#93a0c8}
.crumb a{color:#aab6da;transition:color .2s var(--ease)}
.crumb a:hover{color:#fff}
.crumb span:last-child{color:#fff}
/* 浅色背景中的面包屑（文章页） */
.sec .crumb{color:var(--muted)}
.sec .crumb a{color:var(--brand)}
.sec .crumb a:hover{color:var(--brand2)}
.sec .crumb span{color:var(--muted)}
.sec .crumb span:last-child{color:var(--ink)}

/* ---------- 21. 下载中心 ---------- */
.dl-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.dl-stats{display:flex;gap:36px;flex-wrap:wrap;margin-top:32px}
.dl-stats b{display:block;font-size:24px;font-weight:800;color:var(--brand)}
.dl-stats span{font-size:13px;color:var(--muted)}

.ver{
  display:flex;
  align-items:center;
  gap:26px;
  padding:28px 32px;
  margin-bottom:18px;
  border-radius:var(--r);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--sh-xs);
  transition:transform .35s var(--ease-out),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.ver:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:rgba(79,110,247,.28)}
.ver .vinfo{flex:1}
.ver .vinfo h3{font-size:18px;font-weight:700;margin-bottom:6px}
.ver .vinfo p{font-size:13.5px;color:var(--muted)}
.ver .vinfo ul{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.ver .vinfo ul li{padding:5px 13px;border-radius:999px;font-size:12px;color:var(--ink2);background:var(--bg);border:1px solid var(--line)}

.sys{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sys .s{
  padding:28px;
  border-radius:var(--r);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--sh-xs);
  transition:transform .35s var(--ease-out),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.sys .s:hover{transform:translateY(-4px);box-shadow:var(--sh-sm);border-color:rgba(79,110,247,.24)}
.sys .s b{display:block;margin-bottom:10px;font-size:15px;font-weight:700;color:var(--brand)}
.sys .s p{font-size:14px;line-height:1.8;color:var(--muted)}

/* ---------- 22. 文章正文 ---------- */
.art-wrap{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:44px;align-items:start}
.art{min-width:0;background:#fff}
.art .cat{
  display:inline-block;
  padding:5px 14px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  color:var(--brand);
  background:var(--grad-soft);
  border:1px solid rgba(79,110,247,.15);
}
.art h1{font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.4;letter-spacing:-.5px;margin:18px 0}
.art .meta{display:flex;flex-wrap:wrap;gap:18px;margin-bottom:26px;font-size:13px;color:var(--muted)}
.art img.cover{width:100%;border-radius:var(--r);margin-bottom:30px}
.art .lead{
  padding:24px 28px;
  margin-bottom:30px;
  border-radius:16px;
  border-left:4px solid var(--brand);
  background:var(--grad-soft);
  box-shadow:0 2px 10px rgba(79,110,247,.06);
  font-size:16.5px;
  font-weight:500;
  line-height:1.9;
  color:var(--ink2);
}
.art h2{font-size:22px;font-weight:800;margin:34px 0 16px;padding-top:16px;scroll-margin-top:100px}
.art p{font-size:16px;line-height:1.95;color:#2c3648;margin-bottom:18px}
.art img.bodyimg{width:100%;border-radius:var(--r-sm);margin:24px 0}
.art blockquote{padding:18px 24px;margin:22px 0;border-left:4px solid var(--accent);border-radius:12px;background:var(--bg);font-style:italic;color:#374151}

/* ---------- 23. 文章侧栏 ---------- */
.side{position:sticky;top:calc(var(--header-h) + 24px)}
.scard{margin-bottom:22px;padding:24px;border-radius:var(--r);background:#fff;border:1px solid var(--line);box-shadow:var(--sh-xs)}
.scard .stitle{margin-bottom:18px;padding-left:12px;border-left:4px solid var(--brand);font-size:15.5px;font-weight:800;line-height:1.2}
.toc{position:relative}
.toc::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--line)}
.toc a{position:relative;display:flex;align-items:center;gap:12px;padding:9px 0;font-size:14px;color:var(--muted);transition:color .2s var(--ease)}
.toc a::before{
  content:"";
  flex-shrink:0;
  width:10px;
  height:10px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--line2);
  z-index:1;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.toc a:hover{color:var(--brand)}
.toc a.active{font-weight:700;color:var(--brand)}
.toc a.active::before{background:var(--brand);border-color:var(--brand);box-shadow:0 0 0 4px rgba(79,110,247,.16)}

.rank{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid var(--line)}
.rank:last-child{border-bottom:0}
.rank .rn{flex-shrink:0;width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:8px;font-size:12px;font-weight:800;color:#fff;transition:transform .25s var(--ease)}
.rn-1{background:var(--grad)}
.rn-2{background:linear-gradient(135deg,#f97316,#f43f5e)}
.rn-3{background:linear-gradient(135deg,#fbbf24,#f97316)}
.rn-x{background:#c3cee6}
.rank a{font-size:14px;line-height:1.6;color:var(--ink2);transition:color .2s var(--ease)}
.rank a:hover{color:var(--brand)}
.rank:hover .rn{transform:scale(1.12)}

.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags a{
  padding:7px 15px;
  border-radius:999px;
  font-size:13px;
  color:var(--brand);
  background:var(--grad-soft);
  border:1px solid rgba(79,110,247,.15);
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.tags a:hover{background:var(--grad);color:#fff;border-color:transparent;transform:translateY(-2px)}

/* ---------- 24. 评论 ---------- */
.comments{margin-top:34px;padding:32px;border-radius:var(--r);background:#fff;border:1px solid var(--line)}
.comments h3{font-size:20px;font-weight:800;margin-bottom:22px}
.cmt{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}
.cmt:last-child{border-bottom:0;padding-bottom:0}
.cmt .av{flex-shrink:0;width:42px;height:42px;display:flex;align-items:center;justify-content:center;border-radius:13px;font-size:15px;font-weight:700;color:#fff;background:var(--grad)}
.cmt b{display:block;font-size:14.5px}
.cmt .d{font-size:12px;color:var(--muted)}
.cmt p{margin-top:7px;font-size:14.5px;line-height:1.85;color:var(--ink2)}

/* ---------- 25. 上下篇翻页 ---------- */
.pagnav{display:flex;gap:16px;margin-top:34px}
.pagnav a{flex:1;padding:20px 24px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--sh-xs);transition:transform .32s var(--ease-out),box-shadow .32s var(--ease),border-color .32s var(--ease)}
.pagnav a:hover{transform:translateY(-4px);border-color:rgba(79,110,247,.32);box-shadow:var(--sh-sm)}
.pagnav span{display:block;margin-bottom:4px;font-size:12px;color:var(--muted)}
.pagnav b{font-size:14px;font-weight:600;line-height:1.6;color:var(--ink)}

/* ---------- 26. 站点地图 ---------- */
.smap-col{padding:32px;border-radius:var(--r);background:#fff;border:1px solid var(--line);box-shadow:var(--sh-xs);transition:box-shadow .35s var(--ease),transform .35s var(--ease-out),border-color .35s var(--ease)}
.smap-col:hover{transform:translateY(-4px);box-shadow:var(--sh-sm);border-color:rgba(79,110,247,.24)}
.smap-col h2{margin-bottom:18px;padding-left:12px;border-left:4px solid var(--brand);font-size:19px;font-weight:800}
.smap-col a{display:block;padding:9px 0;font-size:14.5px;color:var(--ink2);border-bottom:1px dashed var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease)}
.smap-col a:last-child{border-bottom:0}
.smap-col a:hover{color:var(--brand);padding-left:6px}

/* ---------- 27. 404 ---------- */
.e404{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  color:#fff;
  background:radial-gradient(820px 500px at 50% -10%,rgba(124,77,255,.42),transparent 62%),linear-gradient(165deg,#05070f,#0d1535);
}
.e404 h1{font-size:clamp(80px,16vw,140px);font-weight:900;line-height:1;background:var(--grad2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.e404 h2{font-size:28px;font-weight:800;margin:18px 0}
.e404 p{margin-bottom:32px;color:#a9b5d9}

/* ---------- 28. 响应式 ---------- */
@media(max-width:992px){
  .menu{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    padding:18px;
    background:rgba(5,7,15,.98);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    border-bottom:1px solid rgba(255,255,255,.08);
    transform:translateY(-160%);
    transition:transform .38s var(--ease);
  }
  .menu.open{transform:none}
  .menu>li>a{color:#fff;padding:14px 16px}
  .drop{
    position:static;
    min-width:0;
    margin:6px 0 4px 14px;
    padding:6px;
    background:rgba(255,255,255,.06);
    border:0;
    box-shadow:none;
    opacity:1;
    visibility:visible;
    transform:none;
    display:none;
  }
  .menu>li.open .drop{display:block}
  .drop a{color:#c2cdea}
  .drop a:hover{background:rgba(255,255,255,.1);color:#fff}
  .burger{display:flex}
  .nav-cta .btn-login{display:none}

  .hero,.phero{padding-top:calc(var(--header-h) + 56px)}
  .hero-grid,.dl-grid{grid-template-columns:1fr;gap:48px}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .art-wrap{grid-template-columns:1fr;gap:34px}
  .side{position:static}
  .sys{grid-template-columns:repeat(2,1fr)}
  .f-grid{grid-template-columns:1fr 1fr;gap:34px}
  .hero h1{font-size:clamp(30px,5.6vw,40px)}
}

@media(max-width:768px){
  .wrap{padding:0 18px}
  .sec{padding:76px 0}
  .sec-head{margin-bottom:42px}
  .sec-sub{font-size:15.5px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .sys{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr;gap:30px}
  .stats{gap:30px}
  .stat b{font-size:26px}
  .ver{flex-direction:column;text-align:center}
  .ver .btn{width:100%}
  .pagnav{flex-direction:column}
  .tcard p{min-height:0}
  .faq-item.open .faq-a{max-height:1100px}
}

@media(max-width:480px){
  .wrap{padding:0 16px}
  .btn{padding:12px 22px;font-size:14px}
  .hero-btns{width:100%}
  .hero-btns .btn{flex:1}
  .stats{flex-direction:column;gap:18px}
  .stat{display:flex;align-items:center;gap:12px;padding-left:16px}
  .stat::before{top:50%;bottom:auto;height:26px;transform:translateY(-50%)}
  .stat b{font-size:24px}
  .steps{grid-template-columns:1fr}
  .faq-q{padding:18px 20px;font-size:15px}
  .faq-a p{padding:0 20px 20px}
  .art .lead{padding:18px 20px;font-size:15px}
  .comments,.scard,.feature,.scen,.tcard,.smap-col{padding:22px}
  .price{padding:30px 22px}
  .to-top{right:16px;bottom:16px}
}

/* ---------- 28.5 工具类 ---------- */
.sec-alt{background:var(--bg)}
.mt-28{margin-top:28px}
.art-page{padding-top:clamp(76px,9vw,112px)}
.crumb-left{justify-content:flex-start;margin-bottom:20px}

/* ---------- 29. 无障碍：尊重减少动效偏好 ---------- */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important;
  }
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}