/* =========================================================
   喜提offer 官网样式
   风格：AI 科技感 + 年轻化 + 大厂求职专业感
   主背景白 · 深紫 / 靛蓝渐变 · 柔和光效
   ========================================================= */

:root{
  --white:#ffffff;
  --ink:#0f172a;
  --ink-2:#1e293b;
  --muted:#64748b;
  --muted-2:#94a3b8;
  --line:#e9e7f5;

  --purple:#6d28d9;
  --purple-deep:#4c1d95;
  --indigo:#4f46e5;
  --indigo-soft:#6366f1;
  --violet:#8b5cf6;
  --sky:#38bdf8;

  --grad:linear-gradient(120deg,#7c3aed 0%,#5b34e8 45%,#4338ca 100%);
  --grad-soft:linear-gradient(120deg,rgba(124,58,237,.12),rgba(67,56,202,.12));
  --grad-text:linear-gradient(100deg,#7c3aed,#4f46e5 55%,#2563eb);

  --shadow-sm:0 2px 10px rgba(76,29,149,.06);
  --shadow:0 18px 40px -18px rgba(76,29,149,.28);
  --shadow-lg:0 40px 80px -30px rgba(76,29,149,.38);

  --radius:22px;
  --radius-sm:14px;
  --container:1180px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
em{font-style:normal}

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

/* ---------------- 背景光效 ---------------- */
.bg-decor{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.glow-1{width:620px;height:620px;top:-260px;right:-160px;background:radial-gradient(circle,#c4b5fd,transparent 68%)}
.glow-2{width:560px;height:560px;top:340px;left:-240px;background:radial-gradient(circle,#bfdbfe,transparent 68%)}
.glow-3{width:640px;height:640px;bottom:-260px;right:8%;background:radial-gradient(circle,#ddd6fe,transparent 70%)}
.grid-mask{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(99,102,241,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(99,102,241,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 72%);
}

/* ---------------- 通用排版 ---------------- */
.section{padding:110px 0;position:relative}
section{scroll-margin-top:84px}
.section-head{max-width:680px;margin:0 auto 56px;text-align:center}
.section-head h2{
  font-size:clamp(28px,4vw,42px);line-height:1.28;font-weight:800;letter-spacing:-.01em;color:var(--ink);
}
.section-head p{margin-top:16px;color:var(--muted);font-size:17px}
.section-head.light h2{color:#fff}
.section-head.light p{color:rgba(255,255,255,.82)}
.grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  font-weight:600;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:.28s cubic-bezier(.4,0,.2,1);white-space:nowrap;
}
.btn .icon{width:18px;height:18px}
.btn-sm{padding:9px 20px;font-size:14.5px}
.btn-lg{padding:15px 32px;font-size:16px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 14px 30px -12px rgba(91,52,232,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 42px -14px rgba(91,52,232,.85)}
.btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{border-color:#d6d0f0;transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--purple-deep)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 20px 40px -16px rgba(255,255,255,.6)}

/* ---------------- 导航 ---------------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:.3s}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.nav.scrolled{background:rgba(255,255,255,.86);backdrop-filter:blur(18px);box-shadow:0 1px 0 var(--line)}
.brand{display:flex;align-items:center;gap:11px}
.brand-logo{width:38px;height:38px;border-radius:11px;box-shadow:var(--shadow-sm)}
.brand-name{font-size:20px;font-weight:800;letter-spacing:-.01em}
.brand-name em{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:34px;font-size:15px;font-weight:500;color:var(--muted)}
.nav-links a{position:relative;transition:.2s}
.nav-links a:hover{color:var(--purple)}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;
  background:var(--grad);border-radius:2px;transition:.28s;
}
.nav-links a:hover::after{width:100%}

/* ---------------- Hero ---------------- */
.hero{padding:150px 0 90px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:9px;font-size:14px;font-weight:600;
  color:var(--purple-deep);background:rgba(124,58,237,.09);
  border:1px solid rgba(124,58,237,.18);padding:8px 16px;border-radius:999px;
}
.pill .dot{width:8px;height:8px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 4px rgba(124,58,237,.16);animation:pulse 2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(124,58,237,0)}}
.hero h1{
  margin-top:26px;font-size:clamp(36px,5.4vw,62px);line-height:1.16;
  font-weight:800;letter-spacing:-.02em;
}
.hero-sub{margin-top:24px;font-size:18px;color:var(--muted);max-width:560px}
.hero-actions{display:flex;gap:14px;margin-top:36px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(3,max-content);justify-content:space-between;gap:36px 24px;margin-top:52px}
.hero-stats li{display:flex;flex-direction:column;align-items:center;text-align:center}
.hero-stats strong{
  font-size:38px;font-weight:800;line-height:1.1;letter-spacing:-.01em;
  background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-stats b{font-size:18px;font-weight:700;color:var(--ink);margin-top:10px;white-space:nowrap}
.hero-stats span{font-size:13px;color:var(--muted-2);margin-top:7px;white-space:nowrap}

/* Hero 视觉 */
.hero-visual{position:relative;display:flex;justify-content:center;min-height:560px;align-items:center}
.phone{
  width:288px;background:#fff;border-radius:38px;padding:10px;
  box-shadow:var(--shadow-lg);border:1px solid var(--line);position:relative;
}
.phone img{border-radius:30px;width:100%}
.phone-notch{
  position:absolute;top:16px;left:50%;transform:translateX(-50%);
  width:88px;height:7px;border-radius:999px;background:rgba(15,23,42,.1);z-index:2;
}
.phone-main{animation:floaty 6s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

.float-card{
  position:absolute;display:flex;gap:12px;align-items:center;background:#fff;
  padding:14px 18px;border-radius:16px;box-shadow:var(--shadow);border:1px solid var(--line);
}
.float-card b{display:block;font-size:14.5px;color:var(--ink)}
.float-card small{font-size:12.5px;color:var(--muted-2)}
.fc-icon{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:#fff;flex-shrink:0}
.fc-icon svg{width:20px;height:20px}
.fc-purple{background:linear-gradient(135deg,#7c3aed,#5b34e8)}
.fc-blue{background:linear-gradient(135deg,#6366f1,#2563eb)}
.float-card-1{top:8%;left:-6%;animation:floaty 5s ease-in-out infinite .4s}
.float-card-2{bottom:14%;right:-8%;animation:floaty 5.6s ease-in-out infinite .9s}
.float-qr{
  position:absolute;bottom:-4%;left:2%;background:#fff;padding:12px;border-radius:18px;
  box-shadow:var(--shadow);border:1px solid var(--line);text-align:center;
  animation:floaty 6.4s ease-in-out infinite .6s;
}
.float-qr img{width:96px;border-radius:10px}
.float-qr span{display:block;font-size:11.5px;color:var(--muted);margin-top:6px}

/* ---------------- 岗位方向 ---------------- */
.jobs{background:linear-gradient(180deg,#fff, #faf9ff 60%, #fff)}
.job-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.job-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:26px 22px;transition:.3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;
}
.job-card::before{
  content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:0;transition:.3s;
}
.job-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#ddd6fe}
.job-card:hover::before{opacity:1}
.job-ico{
  width:60px;height:60px;border-radius:16px;display:grid;place-items:center;overflow:hidden;
  background:linear-gradient(135deg,rgba(124,58,237,.10),rgba(79,70,229,.12));
  border:1px solid rgba(124,58,237,.14);
  margin-bottom:16px;position:relative;transition:.3s;
}
.job-ico img{width:100%;height:100%;object-fit:contain;display:block}
.job-card:hover .job-ico{background:linear-gradient(135deg,rgba(124,58,237,.2),rgba(79,70,229,.22))}
.job-card b{display:block;font-size:16.5px;position:relative}
.job-key{display:block;font-size:12.5px;line-height:1.7;color:var(--purple-deep);margin-top:9px;position:relative}
.job-card small{display:block;color:var(--muted-2);font-size:13px;line-height:1.6;margin-top:8px;position:relative}

/* 置灰岗位卡（暂未覆盖的方向） */
.job-card.is-muted{background:#fbfbfd;border-color:#eae8f1}
.job-card.is-muted .job-ico{background:#f2f1f6;border-color:#e8e6f0}
.job-card.is-muted .job-ico img{filter:grayscale(1);opacity:.55}
.job-card.is-muted b{color:var(--muted)}
.job-card.is-muted .job-key{color:var(--muted-2)}
.job-card.is-muted small{color:var(--muted-2);opacity:.8}
.job-card.is-muted:hover{transform:none;box-shadow:var(--shadow-sm);border-color:#eae8f1;background:#fbfbfd}
.job-card.is-muted:hover::before{opacity:0}
.job-card.is-muted:hover .job-ico{background:#f2f1f6}

/* ---------------- 核心功能 ---------------- */
.feature-grid{display:flex;flex-direction:column;gap:36px}
.feature-card{
  display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:44px;box-shadow:var(--shadow-sm);transition:.3s;
}
.feature-card:hover{box-shadow:var(--shadow)}
.feature-card.reverse{grid-template-columns:1.15fr .85fr}
.feature-card.reverse .feature-media{order:2}
.feature-media{
  background:linear-gradient(160deg,#f5f3ff,#eef2ff);
  border-radius:18px;padding:22px;display:flex;justify-content:center;
}
.feature-media img{width:230px;border-radius:20px;box-shadow:var(--shadow)}
.tag{
  display:inline-block;font-size:13px;font-weight:700;color:var(--purple);
  background:var(--grad-soft);padding:5px 14px;border-radius:999px;margin-bottom:16px;
}
.feature-body h3{font-size:26px;font-weight:800;line-height:1.35;letter-spacing:-.01em}
.feature-body>p{color:var(--muted);margin-top:14px;font-size:16px}
.feature-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.feature-list li{
  position:relative;padding-left:28px;color:var(--ink-2);font-size:15px;
}
.feature-list li::before{
  content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:50%;
  background:var(--grad);
  -webkit-mask:radial-gradient(circle at 30% 110%, transparent 46%, #000 47%);
  mask:radial-gradient(circle at 30% 110%, transparent 46%, #000 47%);
}
.feature-list li::after{
  content:"";position:absolute;left:5px;top:11.5px;width:6px;height:3px;
  border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg);
}

/* ---------------- AI 能力 ---------------- */
.ai-section{
  background:linear-gradient(150deg,#2e1065 0%,#4c1d95 40%,#4338ca 100%);
  color:#fff;overflow:hidden;position:relative;
}
.ai-section::before{
  content:"";position:absolute;top:-160px;right:-120px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(139,92,246,.55),transparent 68%);filter:blur(70px);
}
.ai-section::after{
  content:"";position:absolute;bottom:-200px;left:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.38),transparent 68%);filter:blur(80px);
}
.ai-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:22px;position:relative}
.ai-card{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:34px 28px;backdrop-filter:blur(12px);
  transition:.35s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;
  display:flex;flex-direction:column;
}
.ai-card:hover{background:rgba(255,255,255,.13);transform:translateY(-6px);border-color:rgba(255,255,255,.3)}
.ai-card-main{background:rgba(255,255,255,.12)}
.ai-glow{
  position:absolute;top:-70px;left:-40px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(167,139,250,.75),transparent 70%);filter:blur(40px);
}
.ai-badge{
  display:inline-block;align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.1em;
  color:#ddd6fe;border:1px solid rgba(255,255,255,.3);
  padding:4px 12px;border-radius:999px;margin-bottom:18px;position:relative;
}
.ai-card h3{font-size:24px;font-weight:800;position:relative}
.ai-card-main h3{font-size:30px}
.ai-card p{margin-top:14px;color:rgba(255,255,255,.8);font-size:15.5px;position:relative}
.ai-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:22px;position:relative}
.ai-chips span{
  font-size:12.5px;color:#ede9fe;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.16);padding:5px 12px;border-radius:999px;
}

/* ---------------- 扫码引流 ---------------- */
.download{padding:40px 0 110px}
.download-card{
  background:var(--grad);border-radius:32px;padding:64px;color:#fff;
  display:grid;grid-template-columns:1.3fr .7fr;gap:56px;align-items:center;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.download-card::before{
  content:"";position:absolute;top:-120px;right:20%;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%);
}
.download-copy{position:relative}
.download-copy h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.3;margin-top:8px}
.download-copy p{margin-top:16px;color:rgba(255,255,255,.85);font-size:16.5px;max-width:520px}
.download-actions{margin-top:32px;display:flex;gap:14px}
.download-tip{margin-top:18px;font-size:14px;color:rgba(255,255,255,.72)}
.download-qr{position:relative;display:flex;flex-direction:column;align-items:center;gap:14px}
.qr-frame{background:#fff;padding:16px;border-radius:22px;box-shadow:0 24px 50px -20px rgba(0,0,0,.45)}
.qr-frame img{width:210px;border-radius:12px}
.qr-hint{font-size:13.5px;color:rgba(255,255,255,.85)}

/* ---------------- 页脚 ---------------- */
.footer{background:#0f0b26;color:rgba(255,255,255,.72);padding:64px 0 32px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:40px;flex-wrap:wrap;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:16px}
.footer-brand img{width:48px;height:48px;border-radius:14px}
.footer-brand b{color:#fff;font-size:19px}
.footer-brand p{font-size:14px;margin-top:2px}
.footer-qr{display:flex;align-items:center;gap:14px}
.footer-qr img{width:88px;border-radius:10px;background:#fff;padding:6px}
.footer-qr span{font-size:13.5px}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:26px;font-size:13.5px;color:rgba(255,255,255,.5)}

/* ---------------- 滚动入场 ---------------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s cubic-bezier(.4,0,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------------- 响应式 ---------------- */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:70px}
  .hero-visual{min-height:520px}
  .job-grid{grid-template-columns:repeat(2,1fr)}
  .ai-grid{grid-template-columns:1fr}
  .feature-card,.feature-card.reverse{grid-template-columns:1fr;gap:32px}
  .feature-card.reverse .feature-media{order:0}
  .download-card{grid-template-columns:1fr;gap:36px;padding:44px 32px}
  .hero-stats{justify-content:start;column-gap:48px}
  .nav-links{display:none}
}
@media (max-width:660px){
  .hero-stats{grid-template-columns:1fr;gap:26px}
}
@media (max-width:560px){
  .section{padding:76px 0}
  .hero{padding:120px 0 60px}
  .container{padding:0 18px}
  .job-grid{grid-template-columns:1fr}
  .hero-stats{gap:26px}
  .feature-card{padding:28px}
  .feature-media img{width:200px}
  .float-card-1{left:-2%}
  .float-card-2{right:-2%}
  .float-qr{display:none}
  .nav-cta{display:none}
  .download-actions .btn{width:100%}
}