:root{
  --brand-green:#9bcd50;
  --brand-blue:#32b4e1;
  --brand-dark:#112434;
  --surface:#ffffff;
  --muted:#5b6f81;
  --border-soft:rgba(50,180,225,.18);
}

*{
  box-sizing:border-box;
}

body{
  margin:0;
  font-family:'Segoe UI', Tahoma, sans-serif;
  color:var(--brand-dark);
  background:var(--surface);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

a{
  color:inherit;
  text-decoration:none;
}

a:hover{
  text-decoration:underline;
}

.top-nav{
  position:sticky;
  top:0;
  z-index:40;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1.2rem;
  padding:0.9rem 3.2rem;
  background:rgba(7,18,29,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 24px 55px rgba(7,18,29,.34);
}

.brand{
  display:flex;
  align-items:center;
  gap:.65rem;
  font-weight:600;
  font-size:1.05rem;
  letter-spacing:.04em;
  color:#f4fbff;
}

.brand-logo{
  width:34px;
  height:34px;
  object-fit:contain;
  filter:drop-shadow(0 6px 18px rgba(50,180,225,.35));
}

.nav-menu{
  display:flex;
  align-items:center;
  gap:1rem;
}

.nav-menu a{
  padding:.55rem 1.1rem;
  border-radius:999px;
  font-size:.92rem;
  font-weight:500;
  transition:all .25s ease;
  color:#e2f4ff;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.06);
}

.nav-menu a:hover{
  background:rgba(255,255,255,.16);
  color:#fff;
}

.nav-menu a.active{
  background:linear-gradient(135deg,var(--brand-blue),var(--brand-green));
  color:#03111c;
  box-shadow:0 14px 32px rgba(50,180,225,.35);
  border-color:rgba(255,255,255,.22);
}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  align-items:center;
  justify-content:center;
  gap:6px;
  flex-direction:column;
  cursor:pointer;
  transition:background .2s ease, border-color .2s ease;
  margin-left:auto;
}

.nav-toggle:hover,
.nav-toggle:focus{
  outline:none;
  background:rgba(255,255,255,.14);
  border-color:rgba(255,255,255,.28);
}

.nav-toggle-bar{
  width:18px;
  height:2px;
  border-radius:999px;
  background:#f4fbff;
  transition:transform .2s ease, opacity .2s ease;
}

.nav-toggle.open .nav-toggle-bar:nth-child(1){
  transform:translateY(6px) rotate(45deg);
}

.nav-toggle.open .nav-toggle-bar:nth-child(2){
  opacity:0;
}

.nav-toggle.open .nav-toggle-bar:nth-child(3){
  transform:translateY(-6px) rotate(-45deg);
}

.layout{
  width:100%;
  max-width:960px;
  margin:0 auto;
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:2rem;
  padding:3.5rem 2.2rem 3rem;
  text-align:center;
}

.blog-layout{
  align-items:stretch;
  text-align:left;
  gap:2.8rem;
}

.blog-intro{
  width:100%;
  max-width:820px;
  background:linear-gradient(135deg,rgba(50,180,225,.15),rgba(155,205,80,.18));
  border:1px solid var(--border-soft);
  border-radius:24px;
  padding:2.2rem 2.6rem;
  box-shadow:0 18px 40px rgba(17,36,52,.12);
}

.blog-intro h1{
  margin:0 0 .8rem;
  font-size:2.2rem;
}

.blog-intro p{
  margin:0;
  color:var(--muted);
  font-size:1rem;
}

.blog-grid{
  width:100%;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:1.6rem;
}

.blog-card{
  background:var(--surface);
  border-radius:22px;
  border:1px solid var(--border-soft);
  padding:1.9rem 2rem;
  box-shadow:0 20px 50px rgba(17,36,52,.12);
  display:flex;
  flex-direction:column;
  gap:0.9rem;
  transition:transform .25s ease, box-shadow .25s ease;
}

.blog-card:hover{
  transform:translateY(-6px);
  box-shadow:0 28px 70px rgba(17,36,52,.18);
}

.blog-card h2{
  margin:0;
  font-size:1.45rem;
  color:var(--brand-dark);
}

.blog-card p{
  margin:0;
  color:var(--muted);
}

.card-meta{
  font-size:.85rem;
  color:rgba(17,36,52,.65);
  text-transform:uppercase;
  letter-spacing:.12em;
}

.card-link{
  margin-top:auto;
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.55rem 1.1rem;
  border-radius:999px;
  background:linear-gradient(135deg,var(--brand-blue),var(--brand-green));
  color:#03111c;
  font-weight:600;
  text-decoration:none;
  transition:transform .2s ease, box-shadow .2s ease;
}

.card-link:hover{
  transform:translateY(-3px);
  box-shadow:0 14px 28px rgba(50,180,225,.3);
}

.blog-article{
  width:100%;
  max-width:780px;
  margin:0 auto;
  background:var(--surface);
  border-radius:28px;
  border:1px solid var(--border-soft);
  box-shadow:0 28px 60px rgba(17,36,52,.12);
  padding:2.6rem 3rem;
}

.blog-article header{
  margin-bottom:1.6rem;
}

.blog-article h1{
  margin:0;
  font-size:2.1rem;
  color:var(--brand-dark);
}

.blog-article time{
  display:block;
  margin-top:.6rem;
  font-size:.9rem;
  color:rgba(17,36,52,.65);
}

.blog-article p,
.blog-article ul,
.blog-article ol{
  color:var(--muted);
  font-size:1rem;
  line-height:1.7;
}

.blog-article ul,
.blog-article ol{
  padding-left:1.3rem;
}

.blog-article blockquote{
  border-left:4px solid var(--brand-blue);
  margin:1.5rem 0;
  padding:.4rem 1.2rem;
  background:rgba(50,180,225,.12);
  border-radius:8px;
  font-style:italic;
}

.blog-article code{
  background:rgba(17,36,52,.08);
  padding:.15rem .4rem;
  border-radius:6px;
  font-family:'Fira Code','SFMono-Regular',Consolas,monospace;
  font-size:.9em;
}

.blog-article pre{
  background:rgba(17,36,52,.08);
  padding:1rem 1.2rem;
  border-radius:10px;
  overflow:auto;
  margin:1.4rem 0;
}

.blog-back{
  margin:0 auto 1.2rem;
  width:100%;
  max-width:780px;
}

.blog-back a{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  color:var(--brand-blue);
  font-weight:600;
  text-decoration:none;
}

.greeting{
  margin:0;
  font-size:2.4rem;
  font-weight:600;
}

.chat{
  width:100%;
  display:flex;
  justify-content:center;
}

.chat-card{
  width:100%;
  max-width:780px;
  background:var(--surface);
  border-radius:28px;
  box-shadow:0 32px 70px rgba(17,36,52,.14);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  min-height:560px;
  border:1px solid var(--border-soft);
}

.chat-header{
  background:linear-gradient(135deg,var(--brand-blue),var(--brand-green));
  color:#fff;
  padding:1.2rem 1.9rem;
  font-weight:600;
  font-size:1.05rem;
  letter-spacing:.02em;
}

.chat-container{
  flex:1;
  display:flex;
  align-items:stretch;
  padding:1.6rem;
  background:linear-gradient(135deg,rgba(50,180,225,.08),rgba(155,205,80,.15));
}

#webchat{
  flex:1;
  display:flex;
  min-height:0;
}

#webchat > *{
  flex:1;
  display:flex;
}

.chat-error{
  margin:auto;
  text-align:center;
  color:var(--muted);
  font-size:.95rem;
}

.suggestions{
  width:100%;
  max-width:780px;
}

.question-list{
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:.7rem;
}

.question-list button{
  border:none;
  background:linear-gradient(135deg,rgba(50,180,225,.18),rgba(155,205,80,.24));
  color:var(--brand-dark);
  padding:.65rem 1.2rem;
  font-size:.9rem;
  border-radius:999px;
  cursor:pointer;
  box-shadow:0 10px 24px rgba(17,36,52,.12);
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease;
}

.question-list button:hover{
  transform:translateY(-3px);
  box-shadow:0 18px 36px rgba(17,36,52,.18);
  background:linear-gradient(135deg,rgba(50,180,225,.28),rgba(155,205,80,.32));
}

.site-footer{
  display:flex;
  justify-content:center;
  gap:2.2rem;
  padding:1.6rem 2.2rem 2.4rem;
  font-size:.9rem;
  color:var(--muted);
  border-top:1px solid rgba(17,36,52,.08);
  background:rgba(255,255,255,.94);
}

.site-footer a{
  color:inherit;
  text-decoration:none;
}

.site-footer a:hover{
  text-decoration:underline;
}

.info-card{
  width:100%;
  max-width:780px;
  background:var(--surface);
  border-radius:26px;
  box-shadow:0 28px 60px rgba(17,36,52,.12);
  border:1px solid var(--border-soft);
  padding:2.5rem 3rem;
  text-align:left;
}

.info-card h1{
  margin-top:0;
  font-size:2.1rem;
}

.info-card p{
  color:var(--muted);
  font-size:1rem;
}

.info-card ul{
  margin:1.4rem 0 0;
  padding-left:1.2rem;
  color:var(--muted);
  font-size:1rem;
  list-style:disc;
}

.info-card li + li{
  margin-top:.4rem;
}

.support-layout{
  gap:2.4rem;
  text-align:left;
  align-items:center;
}

.support-hero{
  width:100%;
  max-width:780px;
  background:linear-gradient(135deg,rgba(50,180,225,.2),rgba(155,205,80,.18));
  border:1px solid var(--border-soft);
  border-radius:24px;
  padding:2.2rem 2.6rem;
  box-shadow:0 22px 55px rgba(17,36,52,.14);
}

.support-hero h1{
  margin:0 0 1rem;
  font-size:2.2rem;
}

.support-hero p{
  margin:0;
  color:var(--muted);
  font-size:1rem;
}

.support-grid{
  width:100%;
  max-width:780px;
  margin:0 auto;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:1.5rem;
}

.support-card{
  background:var(--surface);
  border-radius:22px;
  border:1px solid var(--border-soft);
  padding:1.8rem 2rem;
  box-shadow:0 20px 48px rgba(17,36,52,.12);
}

.support-card h2{
  margin:0 0 .8rem;
  font-size:1.4rem;
}

.support-card ul{
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  flex-direction:column;
  gap:.6rem;
}

.support-card a{
  color:var(--brand-blue);
}

.support-card .muted,
.muted{
  color:rgba(17,36,52,.6);
  font-size:.9rem;
}

.support-tools{
  width:100%;
  max-width:780px;
  margin:0 auto;
  background:var(--surface);
  border-radius:24px;
  border:1px solid var(--border-soft);
  box-shadow:0 20px 55px rgba(17,36,52,.12);
  padding:2rem 2.4rem;
}

.support-tools h2{
  margin-top:0;
  font-size:1.6rem;
}

.tool-grid{
  display:flex;
  flex-wrap:wrap;
  gap:.8rem;
  margin:1.4rem 0 1.6rem;
}

.tool-pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:.65rem 1.1rem;
  border-radius:999px;
  background:linear-gradient(135deg,rgba(50,180,225,.18),rgba(155,205,80,.24));
  color:var(--brand-dark);
  font-weight:600;
  text-decoration:none;
  box-shadow:0 12px 28px rgba(17,36,52,.12);
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.tool-pill:hover{
  transform:translateY(-3px);
  box-shadow:0 16px 34px rgba(17,36,52,.16);
  background:linear-gradient(135deg,rgba(50,180,225,.28),rgba(155,205,80,.32));
}

.alt-link{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  color:var(--brand-blue);
  font-weight:600;
}

@media (max-width: 820px){
  .top-nav{
    padding:1rem 1.6rem;
  }
  .layout{
    padding:3rem 1.6rem 2.5rem;
  }
  .greeting{
    font-size:2.1rem;
  }
  .blog-intro{
    padding:1.8rem 2rem;
  }
  .blog-section{
    flex-direction:column;
  }
  .blog-list{
    width:100%;
  }
}

@media (max-width: 640px){
  .top-nav{
    flex-direction:row;
    align-items:center;
    flex-wrap:wrap;
    gap:0.6rem;
    padding:0.9rem 1.6rem;
    position:relative;
  }
  .layout{
    padding:2.8rem 1.2rem 2.4rem;
  }
  .info-card{
    padding:2rem 2.1rem;
  }
  .blog-article{
    padding:2rem 2.2rem;
  }
  .support-hero{
    padding:2rem;
  }
}

@media (max-width: 760px){
  .nav-menu{
    position:relative;
  }
}

@media (max-width: 640px){
  .nav-menu{
    flex-direction:column;
    align-items:stretch;
    gap:0.6rem;
    display:none;
    position:absolute;
    top:calc(100% - 0.3rem);
    right:1.6rem;
    left:1.6rem;
    padding:0.9rem 1rem 1.1rem;
    background:rgba(7,18,29,.96);
    border-radius:16px;
    border:1px solid rgba(255,255,255,.1);
    box-shadow:0 18px 45px rgba(7,18,29,.32);
  }
  .nav-menu.open{
    display:flex;
  }
  .nav-menu a{
    width:100%;
    text-align:left;
    padding:.75rem 1rem;
  }
  .nav-toggle{
    display:flex;
    margin-left:auto;
  }
  .blog-article{
    padding:1.8rem;
  }
  .support-layout{
    gap:1.8rem;
  }
  .support-hero,
  .support-tools{
    padding:1.8rem;
  }
  .support-grid{
    grid-template-columns:1fr;
  }
}

@media (max-width: 440px){
  .nav-menu a{
    font-size:.9rem;
  }
}