/* =========================================================
   超人科技 · iOS 签名官网
   单页静态站样式（无框架依赖）
   ========================================================= */

/* ---------- 变量 ---------- */
:root{
  --purple:#5f2ded;
  --purple-dark:#4a1fcc;
  --blue:#2daaed;
  --ink:#14162b;
  --text:#5a5f7a;
  --muted:#8a8fa8;
  --line:#e9e9f2;
  --bg-soft:#f7f7fb;
  --bg-tint:#faf9ff;
  --white:#fff;
  --radius:18px;
  --container:1160px;
  --shadow-sm:0 6px 18px rgba(20,22,43,.06);
  --shadow-md:0 18px 40px rgba(20,22,43,.10);
  --shadow-lg:0 28px 60px rgba(20,22,43,.14);
}

/* ---------- 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%;}
section{scroll-margin-top:88px;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--purple);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--purple-dark);}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--purple);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(20,22,43,.08);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:74px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(145deg,#2daaed 0%,#5f2ded 100%);
  box-shadow:0 8px 18px rgba(95,45,237,.28);
  flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px;fill:#fff;}
.brand-name{
  font-size:20px;
  font-weight:800;
  letter-spacing:.06em;
  white-space:nowrap;
}

.nav ul{display:flex;align-items:center;gap:30px;}
.nav a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:#3d4160;
  white-space:nowrap;
}
.nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--blue),var(--purple));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s ease;
}
.nav a:hover{color:var(--purple);}
.nav a:hover::after,
.nav a.is-active::after{transform:scaleX(1);}
.nav a.is-active{color:var(--purple);font-weight:600;}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  padding:0;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:11px;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--ink);
  transition:transform .3s ease,opacity .2s ease;
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:20px;}
.nav-toggle span:nth-child(3){top:25px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  padding:96px 0 84px;
  background:
    radial-gradient(900px 520px at 12% 0%,rgba(95,45,237,.10),transparent 60%),
    radial-gradient(760px 460px at 88% 18%,rgba(45,170,237,.12),transparent 62%),
    linear-gradient(180deg,#fbfaff 0%,#ffffff 100%);
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  left:50%;bottom:-140px;
  width:900px;height:280px;
  transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(95,45,237,.14),transparent);
  filter:blur(20px);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.02fr .98fr;
  align-items:center;
  gap:56px;
  z-index:1;
}
.hero-copy h1{
  font-size:clamp(40px,5.2vw,62px);
  line-height:1.18;
  letter-spacing:-.02em;
}
.hero-copy h1 em{
  font-style:normal;
  background:linear-gradient(92deg,var(--purple) 10%,var(--blue) 90%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  margin-top:26px;
  max-width:520px;
  font-size:17px;
  color:var(--text);
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:30px;
}
.hero-tags li{
  padding:8px 16px;
  font-size:13.5px;
  font-weight:500;
  color:#43289c;
  background:#fff;
  border:1px solid rgba(95,45,237,.18);
  border-radius:999px;
  box-shadow:0 4px 14px rgba(95,45,237,.08);
}
.hero-visual img{
  width:100%;
  border-radius:30px;
  box-shadow:var(--shadow-lg);
}

/* ---------- 服务区块 ---------- */
.svc{padding:88px 0;border-top:1px solid #f2f2f8;}
.svc-alt{background:var(--bg-tint);}
.svc-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:68px;
}
.svc-visual img{
  width:100%;
  max-height:520px;
  object-fit:contain;
  filter:drop-shadow(0 26px 44px rgba(95,45,237,.14));
}
.svc-copy .eyebrow{
  margin-bottom:10px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--purple);
}
.svc-copy h2{
  font-size:clamp(28px,3.2vw,38px);
  margin-bottom:18px;
}
.svc-copy p{font-size:16px;color:var(--text);}
.svc-copy .contact-line{
  margin-top:26px;
  padding-top:22px;
  border-top:1px dashed #dcd6f5;
  font-size:15px;
}
.svc-copy .contact-line a{font-weight:600;}

/* ---------- 通用区块标题 ---------- */
.section{padding:96px 0;}
.section-head{
  text-align:center;
  margin-bottom:56px;
}
.section-head .eyebrow{
  margin-bottom:10px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--purple);
}
.section-head h2{font-size:clamp(30px,3.4vw,40px);}

/* ---------- 优势 ---------- */
.features{background:var(--bg-soft);border-top:1px solid #f0f0f7;border-bottom:1px solid #f0f0f7;}
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.feature{
  background:#fff;
  border:1px solid #ededf5;
  border-radius:var(--radius);
  padding:36px 30px 32px;
  transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
}
.feature:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:rgba(95,45,237,.22);
}
.feature img{width:72px;height:72px;margin-bottom:18px;}
.feature h3{font-size:18px;margin-bottom:10px;}
.feature p{font-size:14.5px;line-height:1.85;color:#61667f;}

/* ---------- 签名对比 ---------- */
.plan-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:stretch;
}
.plan{
  display:flex;
  flex-direction:column;
  padding:38px 32px 34px;
  background:#fcfbff;
  border:1px solid #ece8fa;
  border-radius:24px;
  transition:transform .35s ease,box-shadow .35s ease;
}
.plan:hover{transform:translateY(-8px);box-shadow:var(--shadow-md);}
.plan h3{font-size:19px;margin-bottom:14px;}
.plan-price{
  font-size:28px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.01em;
  padding-bottom:20px;
  margin-bottom:22px;
  border-bottom:1px dashed #ddd6f3;
}
.plan ul{margin-top:auto;}
.plan li{
  position:relative;
  padding-left:30px;
  margin-bottom:14px;
  font-size:15px;
  color:#4f5470;
}
.plan li::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:18px;height:18px;
  background:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Ccircle cx='10' cy='10' r='10' fill='%235f2ded'/%3E%3Cpath d='M5.6 10.3l2.7 2.7 6-6' fill='none' stroke='%23fff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/18px 18px no-repeat;
}
.plan-hot{
  background:linear-gradient(170deg,#f6f1ff 0%,#fdfcff 62%);
  border-color:rgba(95,45,237,.32);
  box-shadow:0 16px 38px rgba(95,45,237,.10);
}

/* ---------- 常见问题 ---------- */
.faq{background:#fff;border-top:1px solid #f2f2f8;}
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.faq-item{
  padding:26px 28px 24px;
  background:#fcfbff;
  border:1px solid #efecfa;
  border-radius:16px;
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.faq-item:hover{
  border-color:rgba(95,45,237,.24);
  box-shadow:var(--shadow-sm);
  transform:translateY(-3px);
}
.faq-q{
  position:relative;
  padding-left:32px;
  font-size:15.5px;
  line-height:1.6;
  margin-bottom:10px;
}
.faq-q::before{
  content:"Q";
  position:absolute;
  left:0;
  top:2px;
  width:21px;height:21px;
  display:grid;
  place-items:center;
  border-radius:7px;
  background:linear-gradient(145deg,#2daaed,#5f2ded);
  color:#fff;
  font-size:11px;
  font-weight:700;
  line-height:1;
}
.faq-a{
  padding-left:32px;
  font-size:14.5px;
  line-height:1.85;
  color:#61667f;
}

/* ---------- 数据 ---------- */
.stats{
  background:
    radial-gradient(700px 380px at 50% -10%,rgba(95,45,237,.10),transparent 65%),
    linear-gradient(180deg,#faf9ff,#fff);
  border-top:1px solid #f2f2f8;
  border-bottom:1px solid #f2f2f8;
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  text-align:center;
}
.stat-num{
  font-size:clamp(38px,4.6vw,58px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.1;
  background:linear-gradient(120deg,var(--purple),var(--blue));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  font-variant-numeric:tabular-nums;
}
.stat-num .unit{font-size:.55em;margin-left:2px;}
.stat-label{margin-top:8px;font-size:15px;color:var(--muted);}

/* ---------- 关于 ---------- */
.svc-about{border-top:1px solid #f2f2f8;}

/* ---------- 页脚 ---------- */
.site-footer{
  padding:52px 0 56px;
  text-align:center;
  border-top:1px solid var(--line);
  background:#fbfbfe;
}
.brand-footer{justify-content:center;}
.copyright{
  margin-top:16px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
}

/* ---------- 右侧 Telegram 悬浮客服（垂直居中） ---------- */
.tg-float{
  position:fixed;
  top:50%;
  right:22px;
  transform:translateY(-50%);
  z-index:95;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  width:108px;
  padding:14px 10px 12px;
  background:#fff;
  border:1px solid #eef0f7;
  border-radius:20px;
  box-shadow:0 16px 40px rgba(18,24,60,.16);
  transition:transform .3s ease,box-shadow .3s ease;
}
.tg-float:hover{
  transform:translateY(-50%) translateY(-4px);
  box-shadow:0 22px 52px rgba(18,24,60,.22);
  color:inherit;
}
.tg-icon{
  position:relative;
  z-index:1;
  display:grid;
  place-items:center;
  width:70px;height:70px;
  border-radius:50%;
  color:#fff;
  background:linear-gradient(160deg,#43c0ff 0%,#1f9ddb 55%,#0b7fbd 100%);
  box-shadow:0 10px 24px rgba(34,158,217,.42);
  transition:transform .3s ease;
}
.tg-icon svg{width:38px;height:38px;}
.tg-float:hover .tg-icon{transform:scale(1.06);}
.tg-label{
  position:relative;
  z-index:1;
  font-size:13.5px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:.04em;
  line-height:1.2;
}
/* 呼吸光圈 */
.tg-pulse{
  position:absolute;
  top:14px;
  left:50%;
  width:70px;height:70px;
  margin-left:-35px;
  border-radius:50%;
  background:rgba(45,170,237,.45);
  animation:tgPulse 2.4s cubic-bezier(.2,.6,.3,1) infinite;
  pointer-events:none;
}
@keyframes tgPulse{
  0%{transform:scale(1);opacity:.55;}
  70%{transform:scale(1.55);opacity:0;}
  100%{transform:scale(1.55);opacity:0;}
}

/* ---------- 滚动入场（只做位移，不做透明度，保证爬虫与首屏渲染时内容可见） ---------- */
.js .reveal{
  transform:translateY(22px);
  transition:transform .6s cubic-bezier(.22,.61,.36,1);
}
.js .reveal.is-in{transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav ul{gap:22px;}
  .nav a{font-size:14px;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .svc-grid{gap:44px;}
}

@media (max-width:900px){
  .header-inner{min-height:66px;}
  .nav-toggle{display:block;}  .nav{
    position:absolute;
    top:100%;left:0;right:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 34px rgba(20,22,43,.10);
    max-height:0;
    overflow:hidden;
    transition:max-height .38s ease;
  }
  .nav.is-open{max-height:420px;}
  .nav ul{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:10px 24px 20px;
  }
  .nav a{padding:13px 0;border-bottom:1px solid #f4f4fa;font-size:15px;}
  .nav a::after{display:none;}

  .hero{padding:64px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-lead{max-width:none;}
  .svc{padding:64px 0;}
  .svc-grid{grid-template-columns:1fr;gap:32px;}
  .svc-visual{order:2;}
  .svc-copy{order:1;}
  .plan-grid{grid-template-columns:1fr;}
  .section{padding:70px 0;}
  .section-head{margin-bottom:40px;}
}

@media (max-width:640px){
  .container{padding:0 20px;}
  .brand-name{font-size:18px;}
  .hero-copy h1{font-size:38px;}
  .hero-lead{font-size:15.5px;}
  .feature-grid{grid-template-columns:1fr;gap:16px;}
  .feature{padding:28px 24px;}
  .stat-grid{grid-template-columns:1fr;gap:32px;}
  .plan{padding:30px 24px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;transition:none;}
  .tg-pulse{animation:none;display:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* =========================================================
   Google Ads 落地页转化组件
   ========================================================= */

/* 顶部导航右侧咨询按钮 */
.header-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  border-radius:999px;
  background:linear-gradient(135deg,#3ab8f5,#0b7fbd);
  color:#fff;
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  box-shadow:0 8px 20px rgba(19,140,196,.28);
  transition:transform .25s ease,box-shadow .25s ease;
}
.header-cta:hover{
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 12px 26px rgba(19,140,196,.34);
}
.header-cta .ico-tg{width:16px;height:16px;}

/* 首屏按钮组 */
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.btn-tg{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:16px 30px;
  border-radius:999px;
  background:linear-gradient(135deg,#3ab8f5,#0b7fbd);
  color:#fff;
  font-size:16px;
  font-weight:600;
  letter-spacing:.01em;
  box-shadow:0 14px 30px rgba(11,127,189,.32);
  transition:transform .25s ease,box-shadow .25s ease;
}
.btn-tg:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 18px 38px rgba(11,127,189,.40);
}
.btn-tg .ico-tg{width:20px;height:20px;flex:0 0 auto;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:16px 26px;
  border-radius:999px;
  border:1px solid rgba(95,45,237,.24);
  background:#fff;
  color:#4a2fbf;
  font-size:15.5px;
  font-weight:600;
  transition:background .25s ease,transform .25s ease,border-color .25s ease;
}
.btn-ghost:hover{
  color:#4a2fbf;
  background:#f6f2ff;
  border-color:rgba(95,45,237,.4);
  transform:translateY(-2px);
}
.hero-proof{
  margin-top:22px;
  font-size:13.5px;
  color:#6b7089;
}
.hero-proof strong{
  color:var(--ink);
  font-weight:700;
  font-variant-numeric:tabular-nums;
}

/* 区块底部转化条 */
.section-cta{
  margin-top:48px;
  text-align:center;
}
.section-cta p{
  margin-bottom:20px;
  font-size:15.5px;
  color:#5a5f7a;
}

/* 页脚补充信息 */
.footer-meta{
  margin-top:14px;
  font-size:13.5px;
  color:#6b7089;
}
.footer-meta a{color:var(--purple);}
.footer-links{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:22px;
  margin-top:12px;
  font-size:13px;
}
.footer-links a{color:#8a8fa8;}
.footer-links a:hover{color:var(--purple);}

/* 移动端底部固定咨询按钮（桌面隐藏） */
.cta-bar{display:none;}

@media (max-width:900px){
  .header-cta{display:none;}
  .tg-float{display:none;}
  body{padding-bottom:92px;}

  .cta-bar{
    position:fixed;
    left:12px;right:12px;
    bottom:calc(12px + env(safe-area-inset-bottom));
    z-index:96;
    display:flex;
    align-items:center;
    gap:12px;
    padding:11px 16px;
    border-radius:16px;
    background:linear-gradient(135deg,#3ab8f5,#0b7fbd);
    color:#fff;
    box-shadow:0 14px 32px rgba(11,127,189,.38);
  }
  .cta-bar:hover{color:#fff;}
  .cta-bar-ico{
    flex:0 0 auto;
    width:36px;height:36px;
    display:grid;place-items:center;
    border-radius:50%;
    background:rgba(255,255,255,.20);
  }
  .cta-bar-ico svg{width:20px;height:20px;}
  .cta-bar-text{display:flex;flex-direction:column;line-height:1.3;flex:1;}
  .cta-bar-text strong{font-size:15px;font-weight:600;}
  .cta-bar-text em{font-style:normal;font-size:11.5px;opacity:.86;}
  .cta-bar-arrow{font-size:22px;line-height:1;opacity:.9;}
}

@media (max-width:420px){
  .btn-tg,.btn-ghost{width:100%;}
  .hero-actions{gap:10px;}
}

/* =========================================================
   政策页（隐私政策 / 服务条款）
   ========================================================= */
.doc-page{background:#fff;}
.doc-header{
  position:sticky;
  top:0;
  z-index:10;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.doc-header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:70px;
}
.doc-back{font-size:14px;color:#5a5f7a;}
.doc-back:hover{color:var(--purple);}
.doc-body{
  max-width:800px;
  margin:0 auto;
  padding:56px 24px 90px;
}
.doc-body h1{font-size:34px;margin-bottom:10px;}
.doc-meta{
  font-size:13px;
  color:#8a8fa8;
  margin-bottom:36px;
}
.doc-body h2{font-size:19px;margin:34px 0 10px;}
.doc-body p,
.doc-body li{font-size:15px;line-height:1.95;color:#4f5470;}
.doc-body p{margin:10px 0;}
.doc-body ul{padding-left:22px;list-style:disc;margin:10px 0;}
.doc-body li{margin-bottom:6px;}
.doc-body strong{color:var(--ink);}
.doc-body a{color:var(--purple);}

@media (max-width:640px){
  .doc-body h1{font-size:27px;}
  .doc-body{padding:40px 20px 70px;}
  .doc-body h2{font-size:17px;}
}