:root{
  --green:#08a157;
  --green-dark:#078047;
  --green-soft:#eaf8ef;
  --ink:#111713;
  --muted:#68716c;
  --line:#e3ebe5;
  --orange:#f28a28;
  --blue:#2e75e9;
  --wrap:1320px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body{
  color:var(--ink);
  background:
    radial-gradient(circle at 84% 12%,rgba(137,220,158,.16),transparent 28%),
    linear-gradient(180deg,#fff 0%,#f7fbf8 100%);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
button,a{font:inherit}
button{cursor:pointer}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
.wrap{width:min(calc(100% - 48px),var(--wrap));margin:auto}

.topbar{
  height:72px;
  display:flex;
  align-items:center;
  border-bottom:1px solid rgba(225,234,228,.9);
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(16px);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;color:#07884a;font-weight:850}
.brand img{width:38px;height:38px;object-fit:contain}
.brand span{font-size:19px;white-space:nowrap}
.brand i{font-style:normal;color:#9cb3a4;font-weight:500}
.top-actions{display:flex;align-items:center;gap:22px}
.admin{font-size:14px;font-weight:650;color:#39443e}
.admin:hover{color:var(--green)}

.btn{
  border:1px solid transparent;
  border-radius:13px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-weight:800;
  transition:.18s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn:focus-visible,.modal-close:focus-visible,.flow-cta:focus-visible{
  outline:3px solid rgba(8,161,87,.22);
  outline-offset:3px;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,#11ad62,#078b4b);
  box-shadow:0 9px 22px rgba(7,139,75,.20);
}
.btn-outline{
  color:#087f47;
  background:rgba(255,255,255,.92);
  border-color:#1ca35f;
}
.btn-small{height:42px;padding:0 18px}
.btn-large{min-height:56px;padding:0 25px;font-size:16px}

.landing{
  min-height:calc(100vh - 72px);
  display:grid;
  grid-template-rows:minmax(0,1fr) auto;
}
.hero{
  display:grid;
  grid-template-columns:minmax(0,.92fr) minmax(500px,1.08fr);
  align-items:center;
  gap:62px;
  min-height:0;
  padding-block:46px 34px;
}
.hero-copy{min-width:0}
.eyebrow{
  width:max-content;
  max-width:100%;
  display:flex;
  align-items:center;
  gap:9px;
  margin-bottom:20px;
  padding:8px 12px;
  border:1px solid #d8eee0;
  border-radius:999px;
  background:#f2faf5;
  color:#3a7d54;
  font-size:13px;
  font-weight:750;
}
.eyebrow span{
  width:8px;height:8px;border-radius:50%;
  background:#19aa63;
  box-shadow:0 0 0 5px rgba(25,170,99,.10)
}
h1{
  margin:0;
  max-width:690px;
  font-size:clamp(48px,4.45vw,72px);
  line-height:1.08;
  letter-spacing:-.055em;
  font-weight:900;
}
h1 strong{color:#079551}
.lead{
  max-width:620px;
  margin:24px 0 0;
  color:#515c56;
  font-size:17px;
  line-height:1.78;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.device-hint{margin:12px 0 0 4px;color:#89908c;font-size:12px}
.trust-row{
  margin-top:31px;
  padding-top:23px;
  border-top:1px solid #e3ebe5;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  max-width:650px;
}
.trust-row div{min-width:0}
.trust-row strong{
  display:block;
  font-size:28px;
  line-height:1;
  letter-spacing:-.04em;
}
.trust-row span{
  display:block;
  margin-top:7px;
  color:#68716c;
  font-size:12px;
  line-height:1.5;
}
.data-date{display:block;margin-top:10px;color:#9aa19d;font-size:10px}

.hero-product{
  min-width:0;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:24px;
}
.phone-shell{
  position:relative;
  width:290px;
  height:550px;
  flex:0 0 auto;
  border:8px solid #151817;
  border-radius:42px;
  overflow:hidden;
  background:#111;
  box-shadow:0 24px 60px rgba(21,55,34,.17);
}
.phone-notch{
  position:absolute;z-index:4;left:50%;top:0;transform:translateX(-50%);
  width:83px;height:21px;border-radius:0 0 14px 14px;background:#111;
}
.phone-screen{
  width:100%;height:100%;
  overflow:hidden;
  border-radius:32px;
  background:#fff;
}
.phone-screen img{
  width:100%;
  height:auto;
  object-fit:contain;
  object-position:top center;
}
.qr-card{
  width:300px;
  min-height:430px;
  padding:29px 24px 25px;
  border:1px solid #e0e8e2;
  border-radius:23px;
  background:rgba(255,255,255,.96);
  box-shadow:0 18px 48px rgba(29,73,48,.10);
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
}
.qr-title{
  display:block;
  color:#07894b;
  font-size:18px;
  font-weight:850;
  margin-bottom:14px;
}
.qr-card img{
  width:224px;height:224px;object-fit:contain;border-radius:12px
}
.qr-card strong{margin-top:13px;font-size:15px}
.qr-card p{margin:5px 0 0;color:#7b837e;font-size:12px}

.flowbar{
  border-top:1px solid #e3ebe5;
  background:rgba(255,255,255,.84);
}
.flowbar-inner{
  min-height:122px;
  display:grid;
  grid-template-columns:220px 1fr auto;
  align-items:center;
  gap:28px;
}
.flow-title span{
  display:block;color:#0a9451;font-size:12px;font-weight:850;margin-bottom:5px
}
.flow-title strong{font-size:17px;line-height:1.35}
.flow{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:15px;
}
.flow-item{
  min-width:0;
  display:flex;
  align-items:center;
  gap:11px;
}
.flow-icon{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  display:grid;place-items:center;font-size:20px;font-weight:900
}
.flow-icon.student{background:#e9f7ee;color:#079451}
.flow-icon.station{background:#fff1e1;color:#e7811e}
.flow-icon.broadcast{background:#eef5ff;color:#2d73e6}
.flow-item b{display:block;font-size:13px}
.flow-item small{display:block;margin-top:3px;color:#7b837e;font-size:10px;white-space:nowrap}
.arrow{color:#75b98b;font-size:20px}
.flow-cta{
  border:0;background:transparent;color:#087e47;font-weight:850;font-size:13px;
  display:flex;align-items:center;gap:7px;padding:13px 0
}

.modal-backdrop{
  position:fixed;inset:0;z-index:100;
  display:grid;place-items:center;padding:22px;
  background:rgba(15,29,20,.46);
  backdrop-filter:blur(7px);
}
.modal-backdrop[hidden]{display:none}
.modal{
  position:relative;
  width:min(430px,100%);
  padding:34px;
  border-radius:24px;
  background:#fff;
  box-shadow:0 28px 90px rgba(12,38,22,.26);
  text-align:center;
}
.modal-close{
  position:absolute;right:13px;top:12px;
  width:40px;height:40px;border:0;border-radius:50%;
  background:#f2f6f3;font-size:23px;cursor:pointer
}
.modal-kicker{color:#0a9451;font-size:12px;font-weight:850}
.modal h2{margin:7px 0 9px;font-size:21px}
.modal p{margin:0;color:#65706a;font-size:13px;line-height:1.7}
.modal img{width:245px;margin:18px auto 0;border-radius:12px}
.mobile-modal .retry{width:100%;margin:20px 0 13px}
.mobile-modal small{color:#858d88;font-size:11px}

@media (max-width:1180px){
  .hero{grid-template-columns:.92fr 1.08fr;gap:35px}
  .phone-shell{width:250px;height:480px}
  .qr-card{width:260px;min-height:390px}
  .qr-card img{width:190px;height:190px}
  .flowbar-inner{grid-template-columns:185px 1fr auto;gap:18px}
}
@media (max-width:940px){
  .landing{display:block}
  .hero{
    grid-template-columns:1fr;
    padding-top:48px;
    text-align:center;
  }
  .hero-copy{max-width:720px;margin:auto}
  .eyebrow{margin-inline:auto}
  h1{margin-inline:auto}
  .lead{margin-inline:auto}
  .hero-actions{justify-content:center}
  .trust-row{margin-inline:auto}
  .hero-product{justify-content:center}
  .flowbar-inner{grid-template-columns:1fr;text-align:center;padding:25px 0}
  .flow{flex-wrap:wrap}
  .flow-cta{justify-self:center}
}
@media (max-width:640px){
  .wrap{width:min(calc(100% - 28px),var(--wrap))}
  .topbar{height:64px}
  .brand img{width:33px;height:33px}
  .brand span{font-size:16px}
  .brand i{display:none}
  .admin{display:none}
  .btn-small{height:39px;padding:0 14px;font-size:13px}

  .hero{
    display:block;
    padding:31px 0 24px;
    text-align:left;
  }
  .hero-copy{margin:0}
  .eyebrow{margin:0 0 16px;font-size:11px;padding:7px 10px}
  h1{
    font-size:41px;
    line-height:1.1;
    letter-spacing:-.045em;
  }
  .lead{
    margin:17px 0 0;
    font-size:14px;
    line-height:1.7;
  }
  .hero-actions{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:9px;
    margin-top:21px;
  }
  .btn-large{min-height:51px;padding:0 14px;font-size:14px}
  .device-hint{margin:10px 0 0;text-align:center;font-size:10px}
  .trust-row{
    margin-top:21px;
    padding-top:18px;
    gap:10px;
  }
  .trust-row strong{font-size:23px}
  .trust-row span{font-size:9px;line-height:1.4}
  .data-date{font-size:9px;text-align:center}

  .hero-product{
    margin-top:24px;
    display:block;
  }
  .phone-shell{
    width:188px;height:355px;margin:auto;
    border-width:6px;border-radius:31px;
  }
  .phone-notch{width:61px;height:16px}
  .phone-screen{border-radius:24px}
  .qr-card{display:none}

  .flowbar{margin-top:0}
  .flowbar-inner{
    min-height:auto;
    display:block;
    padding:19px 0 23px;
    text-align:left;
  }
  .flow-title{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
  .flow-title span{margin:0;font-size:10px}
  .flow-title strong{font-size:13px;text-align:right}
  .flow{
    margin-top:15px;
    display:grid;
    grid-template-columns:1fr;
    gap:8px;
  }
  .flow-item{
    padding:9px 10px;
    border:1px solid #e5ebe7;
    border-radius:13px;
    background:#fff;
  }
  .flow-item b{font-size:12px}
  .flow-item small{font-size:9px}
  .flow-icon{width:34px;height:34px;border-radius:10px}
  .arrow{display:none}
  .flow-cta{
    width:100%;
    margin-top:11px;
    justify-content:center;
    min-height:44px;
    border:1px solid #1ca35f;
    border-radius:12px;
    background:#fff;
  }

  .modal{padding:32px 22px 25px}
  .desktop-modal{display:none!important}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;scroll-behavior:auto!important}
}