*{box-sizing:border-box}
:root{
  --teal:#12b8af;
  --teal2:#0ca7c6;
  --cyan:#22c8de;
  --ink:#121826;
  --text:#5d6775;
  --line:#e7ecef;
  --soft:#f6fbfc;
  --dark:#111827;
}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button{font:inherit}
.wrap{width:min(1180px,calc(100% - 32px));margin:0 auto}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid #edf2f3;box-shadow:0 1px 8px rgba(15,23,42,.035)}
.header-inner{height:68px;display:flex;align-items:center}
.logo-wrap{display:flex;align-items:center;gap:9px}
.logo-img{width:38px;height:38px;object-fit:contain}
.logo-fallback{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--teal2),var(--teal));color:#fff;font-weight:900;display:none;align-items:center;justify-content:center}
.logo-text{font-size:21px;font-weight:900;background:linear-gradient(90deg,var(--teal2),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:30px;font-size:14px;color:#66717f}
.main-nav a:hover,.main-nav .active{color:var(--teal2)}
.header-download{margin-left:28px;background:linear-gradient(90deg,var(--teal2),var(--teal));color:#fff;font-weight:700;font-size:14px;padding:11px 22px;border-radius:999px;box-shadow:0 8px 20px rgba(12,167,198,.22)}
.menu-btn{display:none;margin-left:auto;border:0;background:none;font-size:26px;color:#334155}
.mobile-menu{display:none}

/* Hero */
.hero{padding:130px 0 40px;background:linear-gradient(180deg,#f5fcfd 0%,#fff 76%)}
.hero-inner{min-height:500px;display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.hero-mini{display:inline-block;color:#0ca7c6;background:#e9fbfd;padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700;margin-bottom:22px}
.hero h1{font-size:clamp(46px,5.2vw,70px);line-height:1.02;letter-spacing:-.05em;margin:0 0 22px}
.hero h1 span{display:block;background:linear-gradient(90deg,var(--teal2),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy>p{max-width:580px;color:#6a7482;font-size:16px;line-height:1.85;margin:0}
.hero-buttons{display:flex;gap:14px;margin-top:30px}
.hero-buttons a{min-height:52px;display:inline-flex;align-items:center;justify-content:center;padding:0 28px;border-radius:999px;font-weight:800}
.btn-main{background:linear-gradient(90deg,var(--teal2),var(--teal));color:#fff;box-shadow:0 12px 26px rgba(12,167,198,.22)}
.btn-ghost{border:2px solid #bdeef0;color:#0b91a5;background:#fff}
.hero-phone-area{display:flex;justify-content:center}
.phone-shell{width:288px;height:480px;background:#15202d;border:7px solid #101722;border-radius:38px;padding:12px;box-shadow:0 32px 65px rgba(15,23,42,.2);position:relative}
.phone-speaker{width:72px;height:6px;background:#283445;border-radius:999px;position:absolute;left:50%;top:13px;transform:translateX(-50%)}
.phone-screen{height:100%;border-radius:27px;background:linear-gradient(155deg,#0b1720,#103a3d 60%,#0e1b23);padding:56px 25px 24px;color:#fff}
.screen-logo{width:80px;height:80px;margin:0 auto 15px;background:#fff;border-radius:20px;display:grid;place-items:center;overflow:hidden;position:relative}
.screen-logo img{width:100%;height:100%;object-fit:cover;position:relative;z-index:2}
.screen-logo span{display:none;color:#111827;font-weight:900;font-size:28px}
.phone-screen>strong{display:block;text-align:center;font-size:30px}
.phone-screen>small{display:block;text-align:center;color:#6fded8;font-size:9px;letter-spacing:.15em;margin-top:5px}
.screen-list{display:grid;gap:9px;margin-top:28px}
.screen-list div{display:flex;gap:11px;align-items:center;background:rgba(255,255,255,.07);padding:12px;border:1px solid rgba(255,255,255,.07);border-radius:10px}
.screen-list i{width:27px;height:27px;border-radius:7px;background:#173d42;color:#5af1e6;display:grid;place-items:center;font-style:normal}
.screen-list b{font-size:12px}

.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);margin-top:28px;background:#fff;border:1px solid var(--line);box-shadow:0 12px 35px rgba(15,23,42,.06)}
.stats-bar>div{text-align:center;padding:22px 10px;border-right:1px solid var(--line)}
.stats-bar>div:last-child{border-right:0}
.stats-bar strong{display:block;font-size:30px;color:var(--teal2);margin-bottom:4px}
.stats-bar span{font-size:13px;color:#75808d}

/* Shared */
.section{padding:82px 0}
.section-title{text-align:center;max-width:700px;margin:0 auto 46px}
.section-title>span{color:var(--teal2);font-size:13px;font-weight:800}
.section-title h2{font-size:clamp(30px,3.5vw,44px);line-height:1.15;margin:10px 0 12px;letter-spacing:-.035em}
.section-title p{color:#737d89;line-height:1.8;font-size:15px;margin:0}

/* advantages */
.advantages{background:#fff}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.adv-grid article{border:1px solid var(--line);padding:28px 26px;background:#fff;transition:.25s;min-height:220px}
.adv-grid article:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(15,23,42,.08)}
.adv-icon{width:52px;height:52px;border-radius:14px;background:#eafcfc;color:#0b9caf;display:grid;place-items:center;font-size:24px;font-weight:900;margin-bottom:20px}
.adv-grid h3{font-size:19px;margin:0 0 10px}
.adv-grid p{margin:0;color:#6f7985;line-height:1.75;font-size:14px}

/* interface */
.interface{background:var(--soft)}
.interface-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ui-card{background:#fff;border:1px solid var(--line);box-shadow:0 10px 26px rgba(15,23,42,.05)}
.ui-head{display:flex;align-items:center;justify-content:space-between;padding:17px 19px;border-bottom:1px solid var(--line)}
.ui-head span{color:#0ca7c6;font-size:12px;font-weight:900}
.ui-head strong{font-size:15px}
.ui-screen{min-height:310px;background:linear-gradient(155deg,#0d1720,#12363a);padding:18px;color:#fff}
.fake-status{font-size:9px;letter-spacing:.15em;color:#66dcd5;border-bottom:1px solid rgba(255,255,255,.08);padding-bottom:13px}
.fake-lobby,.fake-events{display:grid;gap:10px;margin-top:26px}
.fake-lobby span,.fake-events span{padding:15px;background:rgba(255,255,255,.07);font-size:12px;border-left:3px solid #15b9b2}
.fake-table{margin-top:27px;height:210px;border-radius:50%;border:1px solid #28747a;background:#164148;position:relative;display:grid;place-items:center}
.fake-table div{position:absolute;width:42px;height:20px;border-radius:999px;background:#0d2629}
.fake-table div:nth-child(1){top:18px}
.fake-table div:nth-child(2){bottom:18px;left:32px}
.fake-table div:nth-child(3){bottom:18px;right:32px}
.fake-table strong{font-size:17px;color:#d8fffb}

/* experience */
.experience{background:#fff}
.experience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.experience-grid article{display:flex;gap:16px;padding:27px;border:1px solid var(--line);background:#fff}
.exp-avatar{width:48px;height:48px;flex:0 0 48px;border-radius:50%;background:linear-gradient(135deg,var(--teal2),var(--teal));display:grid;place-items:center;color:#fff;font-size:12px;font-weight:900}
.experience-grid h3{margin:0 0 4px;font-size:18px}
.experience-grid small{color:#0ca7c6;font-size:11px}
.experience-grid p{color:#717b87;line-height:1.75;font-size:14px;margin:12px 0 0}

/* FAQ */
.faq-section{background:#f8fbfc}
.faq-wrap{max-width:830px}
.faq-list{display:grid;gap:10px}
.faq-item{border:1px solid var(--line);background:#fff}
.faq-item button{width:100%;border:0;background:#fff;padding:20px 22px;display:flex;align-items:center;justify-content:space-between;text-align:left;font-weight:800;color:#172033;cursor:pointer}
.faq-item button b{font-size:20px;color:#0ca7c6;transition:.2s}
.faq-answer{max-height:0;overflow:hidden;transition:.3s}
.faq-answer p{margin:0;padding:0 22px 20px;color:#707b87;line-height:1.8;font-size:14px}
.faq-item.active .faq-answer{max-height:220px}
.faq-item.active button b{transform:rotate(45deg)}

/* download */
.download-section{padding:70px 0;background:linear-gradient(100deg,#0ca7c6,#11b7ad);color:#fff}
.download-inner{display:flex;align-items:center;justify-content:space-between;gap:60px}
.download-inner>div:first-child>span{font-size:12px;font-weight:800;letter-spacing:.08em}
.download-inner h2{font-size:clamp(30px,4vw,46px);margin:8px 0 9px}
.download-inner p{margin:0;color:#d8ffff}
.download-buttons{display:flex;gap:12px}
.download-buttons a{min-width:210px;background:#fff;color:#126e7a;padding:16px 18px;display:flex;flex-direction:column;gap:4px;border-radius:4px}
.download-buttons small{font-size:9px;color:#7aa3a7;letter-spacing:.12em}
.download-buttons strong{font-size:16px}

.system-note{background:#fff;border-bottom:1px solid var(--line)}
.system-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.system-grid>div{padding:21px 15px;border-right:1px solid var(--line)}
.system-grid>div:last-child{border-right:0}
.system-grid strong{display:block;font-size:14px;color:#172033}
.system-grid span{display:block;font-size:11px;color:#8a949f;margin-top:5px}

/* footer */
.footer{background:#121826;color:#8f9aaa;padding:52px 0 25px}
.footer-inner{display:flex;justify-content:space-between;gap:50px}
.footer-inner>div:first-child{max-width:480px}
.footer-inner strong{color:#fff;font-size:19px}
.footer-inner p{font-size:13px;line-height:1.8}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;font-size:13px}
.footer-links a:hover{color:#fff}
.copyright{border-top:1px solid #273040;margin-top:30px;padding-top:20px;font-size:12px;color:#657080}

/* responsive */
@media(max-width:960px){
  .main-nav,.header-download{display:none}
  .menu-btn{display:block}
  .mobile-menu{position:fixed;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:18px 20px;display:none;flex-direction:column;gap:15px}
  .mobile-menu.open{display:flex}
  .mobile-download{background:linear-gradient(90deg,var(--teal2),var(--teal));color:#fff!important;padding:12px 14px;text-align:center}
  .hero-inner{grid-template-columns:1fr;gap:45px}
  .hero-phone-area{justify-content:flex-start}
  .adv-grid,.interface-row,.experience-grid{grid-template-columns:repeat(2,1fr)}
  .download-inner{flex-direction:column;align-items:flex-start}
}

@media(max-width:680px){
  .wrap{width:min(100% - 24px,1180px)}
  .hero{padding-top:105px}
  .hero-inner{min-height:0}
  .hero h1{font-size:43px}
  .hero-buttons{flex-direction:column}
  .hero-buttons a{width:100%}
  .hero-phone-area{justify-content:center}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .stats-bar>div:nth-child(2){border-right:0}
  .stats-bar>div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .adv-grid,.interface-row,.experience-grid{grid-template-columns:1fr}
  .download-buttons{width:100%;flex-direction:column}
  .download-buttons a{width:100%}
  .system-grid{grid-template-columns:repeat(2,1fr)}
  .system-grid>div:nth-child(2){border-right:0}
  .system-grid>div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .footer-inner{flex-direction:column}
}