/* ===== 易支付 前台样式 ===== */
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:#2b2f3a;background:#f6f7fb;line-height:1.6}
a{color:inherit;text-decoration:none}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
code{background:#eef2ff;color:#3b5bdb;padding:2px 7px;border-radius:5px;font-family:"SFMono-Regular",Consolas,monospace;font-size:13px}

/* topbar */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid #eceef3}
.topbar-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:#1f2430}
.brand img{height:30px}
.topnav{display:flex;align-items:center;gap:24px}
.topnav a{color:#5b6270;font-size:15px;transition:.2s}
.topnav a:hover{color:#4f7cff}
.topnav .btn-login{background:#4f7cff;color:#fff;padding:8px 20px;border-radius:30px}
.topnav .btn-login:hover{background:#3a64e0;color:#fff}

/* hero */
.hero{background:linear-gradient(135deg,#4f7cff 0%,#6a5cff 55%,#8a4fff 100%);color:#fff;padding:80px 0 90px;overflow:hidden}
.hero-in{display:flex;align-items:center;justify-content:space-between;gap:40px}
.hero-text{flex:1;max-width:560px}
.hero-text h1{font-size:42px;line-height:1.25;margin-bottom:18px;font-weight:800}
.hero-text p{font-size:17px;opacity:.92;margin-bottom:24px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span{background:rgba(255,255,255,.16);padding:6px 16px;border-radius:30px;font-size:13px;backdrop-filter:blur(4px)}
.hero-card{width:360px;background:#fff;color:#2b2f3a;border-radius:16px;padding:32px;box-shadow:0 24px 60px rgba(0,0,0,.22)}
.hero-card h3{font-size:20px;margin-bottom:18px;text-align:center}
.hero-card input{width:100%;height:44px;border:1px solid #e3e6ee;border-radius:10px;padding:0 14px;margin-bottom:14px;font-size:15px;outline:none;transition:.2s}
.hero-card input:focus{border-color:#4f7cff;box-shadow:0 0 0 3px rgba(79,124,255,.15)}
.form-extra{display:flex;justify-content:space-between;font-size:13px;color:#8a90a0;margin-top:4px}
.form-extra a:hover{color:#4f7cff}

/* buttons */
.btn{display:inline-block;padding:9px 18px;border-radius:9px;border:1px solid #d8dce6;background:#fff;color:#444;cursor:pointer;font-size:14px;transition:.2s}
.btn:hover{border-color:#b9c0d0}
.btn-primary{background:#4f7cff;border-color:#4f7cff;color:#fff}
.btn-primary:hover{background:#3a64e0;border-color:#3a64e0}
.btn-danger{background:#f56c6c;border-color:#f56c6c;color:#fff}
.btn-danger:hover{background:#e35353}
.btn-block{width:100%;height:46px;font-size:16px}
.btn-sm{padding:5px 12px;font-size:13px}

.alert{background:#fff1f0;color:#cf1322;border:1px solid #ffccc7;padding:10px 14px;border-radius:8px;margin-bottom:14px;font-size:14px}

/* sections */
.sec-title{text-align:center;font-size:30px;font-weight:800;margin-bottom:36px;color:#1f2430}
.feature{padding:80px 0;background:#fff}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat{background:#f8f9fd;border-radius:14px;padding:32px 26px;transition:.25s;border:1px solid transparent}
.feat:hover{transform:translateY(-6px);box-shadow:0 14px 40px rgba(79,124,255,.12);border-color:#e8ecff}
.feat .fi{font-size:38px;margin-bottom:12px}
.feat h3{font-size:18px;margin-bottom:8px;color:#1f2430}
.feat p{color:#7a8190;font-size:14px}

.doc{padding:80px 0;background:#f6f7fb}
.doc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.doc-item{background:#fff;border-radius:12px;padding:24px 26px;border-left:4px solid #4f7cff}
.doc-item h3{font-size:16px;margin-bottom:8px}
.doc-item p{color:#7a8190;font-size:14px}
.doc-note{text-align:center;color:#9aa0ad;margin-top:28px;font-size:14px}

/* reg */
.reg-wrap{padding:60px 0;display:flex;justify-content:center}
.reg-card{width:440px;background:#fff;border-radius:16px;padding:36px;box-shadow:0 12px 40px rgba(0,0,0,.06)}
.reg-card h2{text-align:center;margin-bottom:22px;color:#1f2430}
.reg-card label{display:block;font-size:13px;color:#5b6270;margin-bottom:14px}
.reg-card input{display:block;width:100%;height:42px;border:1px solid #e3e6ee;border-radius:9px;padding:0 12px;margin-top:6px;outline:none;transition:.2s}
.reg-card input:focus{border-color:#4f7cff;box-shadow:0 0 0 3px rgba(79,124,255,.12)}

/* footer */
.footer{background:#1f2430;color:#a0a6b4;padding:36px 0;text-align:center}
.foot-links{display:flex;justify-content:center;gap:24px;margin-bottom:14px}
.foot-links a:hover{color:#fff}
.foot-copyright{font-size:13px;color:#6b7180}

/* login page (admin) */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#4f7cff,#8a4fff)}
.login-box{width:380px;background:#fff;border-radius:16px;padding:40px;box-shadow:0 24px 60px rgba(0,0,0,.25)}
.login-box h2{text-align:center;margin-bottom:22px;color:#1f2430}
.login-box input{width:100%;height:46px;border:1px solid #e3e6ee;border-radius:10px;padding:0 14px;margin-bottom:16px;outline:none}
.login-box input:focus{border-color:#4f7cff}
.login-tip{margin-top:14px;text-align:center;color:#9aa0ad;font-size:13px}

@media(max-width:900px){
  .hero-in{flex-direction:column}
  .hero-card{width:100%}
  .feat-grid,.doc-grid{grid-template-columns:1fr}
  .topnav a:not(.btn-login){display:none}
}