.hero {
  position: relative;
  background: var(--bg-hero);
  padding-top: 56px;
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(10px);
  z-index: 0;
}
.hero::before {
  width: 420px; height: 420px;
  top: -140px; right: -80px;
  background: radial-gradient(circle, rgba(124,92,255,.16), transparent 65%);
}
.hero::after {
  width: 360px; height: 360px;
  bottom: 40px; left: -120px;
  background: radial-gradient(circle, rgba(16,185,129,.12), transparent 65%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
  padding-bottom: 90px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -.5px;
  margin: 22px 0 18px;
  overflow-wrap: break-word;
}
.grad-text {
  background: var(--primary-grad);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}
.hero-sub {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 480px;
  margin-bottom: 28px;
}


.hero-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  padding: 8px 8px 8px 20px;
  max-width: 520px;
  box-shadow: var(--shadow-md);
}
.hero-search .micon { width: 20px; height: 20px; color: var(--muted); flex-shrink: 0; }
.hero-search input {
  flex: 1;
  border: none;
  outline: none;
  background: none;
  font-family: inherit;
  font-size: .98rem;
  color: var(--heading);
  min-width: 0;
}
.hero-search input::placeholder { color: var(--muted); }
.hero-search .btn { padding: 11px 26px; }


.popular-searches {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 22px;
}
.popular-searches > span { color: var(--muted); font-size: .88rem; font-weight: 500; }
.tag-pill {
  padding: 6px 14px;
  border-radius: var(--r-pill);
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: .82rem;
  font-weight: 600;
  transition: all var(--transition);
}
.tag-pill:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-1px); }


.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 440px;
}

.calc-device {
  position: relative;
  z-index: 2;
  width: 300px;
  padding: 20px;
  border-radius: 30px;
  background: linear-gradient(160deg, #ffffff 0%, #F1EEFF 100%);
  box-shadow: 0 30px 70px rgba(70, 45, 140, .28);
  transform: rotate(-4deg);
}
[data-theme="dark"] .calc-device {
  background: linear-gradient(160deg, #241F3D 0%, #1B1730 100%);
  box-shadow: 0 30px 70px rgba(0,0,0,.55);
}
.calc-screen {
  background: #1E1B2E;
  border-radius: 16px;
  padding: 22px 20px;
  margin-bottom: 16px;
  text-align: right;
  min-height: 78px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}
.calc-screen span { color: #fff; font-size: 2rem; font-weight: 600; letter-spacing: 1px; }


.calc-screen span {
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
}
.calc-screen span.is-long   { font-size: 1.5rem;  letter-spacing: .5px; }
.calc-screen span.is-longer { font-size: 1.15rem; letter-spacing: 0; }

.calc-keys {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.key {
  aspect-ratio: 1;
  border-radius: 14px;
  background: var(--card);
  color: var(--heading);
  font-size: 1.1rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
[data-theme="dark"] .key { background: #2A2545; }
.key:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.key.fn { background: var(--bg-soft); color: var(--muted); }
[data-theme="dark"] .key.fn { background: #201C38; }
.key.op { background: var(--primary-grad); color: #fff; box-shadow: var(--shadow-primary); }
.key.wide { grid-column: span 2; aspect-ratio: auto; }
.key.equals { aspect-ratio: auto; }


.float-card {
  position: absolute;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px 16px;
  box-shadow: var(--shadow-lg);
  font-size: .82rem;
  font-weight: 600;
  color: var(--heading);
  animation: floaty 4s ease-in-out infinite;
}
.float-card .icon-chip { width: 40px; height: 40px; border-radius: 12px; }
.float-card .icon-chip img { width: 22px; height: 22px; }

.fc-percent { top: 6%;  left: -4%;  animation-delay: 0s; }
.fc-pie     { top: 12%; right: -6%; animation-delay: .8s; }
.fc-graph   { bottom: 22%; left: -8%; animation-delay: 1.6s; }
.fc-formula { bottom: 8%; right: -4%; animation-delay: 1.1s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}
@media (prefers-reduced-motion: reduce) {
  .float-card { animation: none; }
}


.hero-visual { min-height: 480px; }
.calc-chips { position: absolute; inset: 0; z-index: 3; pointer-events: none; }
.calc-chip {
  position: absolute; pointer-events: auto;
  display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
  padding: 8px 14px 8px 8px; border-radius: var(--r-pill);
  background: var(--card); border: 1px solid var(--border);
  font-size: .8rem; font-weight: 600; color: var(--heading);
  box-shadow: var(--shadow-lg);
  animation: floaty 4s ease-in-out infinite;
  transition: border-color var(--transition), color var(--transition), box-shadow var(--transition);
}
.calc-chip:hover { border-color: var(--primary); color: var(--primary); }
.calc-chip .icon-chip { width: 30px; height: 30px; border-radius: 9px; }
.calc-chip .icon-chip img { width: 17px; height: 17px; }


.fc-1 { top: 3%;  left: -3%;  animation-delay: 0s;   }
.fc-2 { top: 3%;  right: -3%; animation-delay: .5s;  }
.fc-3 { top: 21%; left: -7%;  animation-delay: 1s;   }
.fc-4 { top: 27%; right: -7%; animation-delay: 1.5s; }
.fc-5 { top: 39%; left: -7%;  animation-delay: .8s;  }
.fc-6 { top: 51%; right: -7%; animation-delay: 1.3s; }
.fc-7 { top: 57%; left: -3%;  animation-delay: .3s;  }
.fc-8 { top: 75%; right: -3%; animation-delay: 1.1s; }
.fc-9 { top: 75%; left: -3%;  animation-delay: .6s;  }
@media (prefers-reduced-motion: reduce) { .calc-chip { animation: none; } }


.tag-pill.tag-tool { border-color: var(--primary); color: var(--primary); }
.tag-pill.tag-tool:hover { background: var(--primary); color: #fff; }


.stats-bar {
  position: relative;
  z-index: 4;
  margin-top: -46px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  padding: 26px 20px;
}
.stat { display: flex; align-items: center; gap: 14px; justify-content: center; }
.stat + .stat { border-left: 1px solid var(--border); }
.stat-text { display: flex; flex-direction: column; line-height: 1.25; }
.stat-text strong { font-size: 1.35rem; font-weight: 700; color: var(--heading); }
.stat-text span { font-size: .85rem; color: var(--muted); }


.cat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}
.cat-card {
  position: relative;
  display: flex;
  gap: 22px;
  padding: 34px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}
.cat-purple { background: linear-gradient(135deg, #F0EDFF 0%, #F8F6FF 100%); }
.cat-green  { background: linear-gradient(135deg, #E4F7EF 0%, #F5FBF8 100%); }
[data-theme="dark"] .cat-purple { background: linear-gradient(135deg, #221D40 0%, #191531 100%); }
[data-theme="dark"] .cat-green  { background: linear-gradient(135deg, #14312A 0%, #141E1B 100%); }
.cat-card::after {
  content: "";
  position: absolute;
  width: 180px; height: 180px;
  right: -50px; bottom: -70px;
  border-radius: 50%;
  background: rgba(255,255,255,.35);
}
[data-theme="dark"] .cat-card::after { background: rgba(255,255,255,.03); }

.icon-chip.big { width: 72px; height: 72px; }
.icon-chip.big img { width: 34px; height: 34px; }

.cat-body { position: relative; z-index: 1; }
.cat-body h3 { font-size: 1.4rem; margin-bottom: 6px; }
.cat-tag {
  display: inline-block;
  font-size: .82rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}
.cat-tag.green { color: var(--green-dark); }
.cat-body p { color: var(--text); font-size: .95rem; margin-bottom: 20px; max-width: 340px; }
.cat-body .btn .micon { width: 18px; height: 18px; }


.sec-head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.sec-head-row h2 { font-size: clamp(1.5rem, 3vw, 1.9rem); }
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary);
  font-weight: 600;
  font-size: .92rem;
}
.link-more .micon { width: 16px; height: 16px; transition: transform var(--transition); }
.link-more:hover .micon { transform: translateX(3px); }

.calc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.calc-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.calc-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}
.calc-body { flex: 1; min-width: 0; }
.calc-body h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.calc-body p { font-size: .84rem; color: var(--muted); line-height: 1.5; }
.calc-arrow {
  width: 30px; height: 30px;
  padding: 7px;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--muted);
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.calc-card:hover .calc-arrow { background: var(--primary); color: #fff; transform: translateX(2px); }


.why-section { background: var(--bg-soft); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.why-card {
  position: relative;
  text-align: center;
  padding: 34px 24px 30px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.why-card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--primary-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.why-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}
.why-card:hover::before { transform: scaleX(1); }


.why-card .icon-chip.big {
  margin: 0 auto 18px;
  transition: box-shadow var(--transition);
}
.js .why-card .icon-chip.big { animation: whyFloat 3.6s ease-in-out infinite; }
.why-card:nth-child(2) .icon-chip.big { animation-delay: .45s; }
.why-card:nth-child(3) .icon-chip.big { animation-delay: .9s; }
.why-card:nth-child(4) .icon-chip.big { animation-delay: 1.35s; }
.why-card:hover .icon-chip.big {
  animation-play-state: paused;
  box-shadow: 0 10px 24px rgba(108, 92, 231, .28);
}
@keyframes whyFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
@media (prefers-reduced-motion: reduce) { .js .why-card .icon-chip.big { animation: none; } }

.why-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; }
.why-card p { color: var(--muted); font-size: .9rem; max-width: 220px; margin: 0 auto; line-height: 1.6; }


.recent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.recent-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: transform var(--transition), box-shadow var(--transition);
}
.recent-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.recent-body h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .95rem;
  font-weight: 600;
  margin-bottom: 2px;
}
.recent-body p { font-size: .82rem; color: var(--muted); }


.cta-banner {
  display: flex;
  align-items: center;
  gap: 26px;
  background: var(--primary-grad);
  border-radius: var(--r-lg);
  padding: 32px 40px;
  box-shadow: var(--shadow-primary);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  top: -120px; left: 30%;
}
.cta-img { width: 84px; height: 84px; flex-shrink: 0; position: relative; z-index: 1; }
.cta-text { flex: 1; position: relative; z-index: 1; }
.cta-text h3 { color: #fff; font-size: 1.5rem; margin-bottom: 4px; }
.cta-text p { color: rgba(255,255,255,.85); font-size: .95rem; }
.cta-btn { position: relative; z-index: 1; }
.cta-btn .micon { width: 18px; height: 18px; }


@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; gap: 20px; padding-bottom: 80px; }
  .hero-copy { text-align: center; }
  .hero-sub { margin-inline: auto; }
  .hero-search { margin-inline: auto; }
  .popular-searches { justify-content: center; }

  .hero-visual { flex-direction: column; min-height: 0; gap: 22px; margin-top: 20px; }
  .calc-chips { position: static; inset: auto; pointer-events: auto;
    display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 460px; }
  .calc-chip { position: static; inset: auto; animation: none; box-shadow: var(--shadow-sm); }
  .calc-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
}

@media (max-width: 768px) {
  .cat-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 20px 8px; }
  .stat:nth-child(odd) { border-left: none; }
  .recent-grid { grid-template-columns: 1fr; }
  .cta-banner { flex-direction: column; text-align: center; padding: 30px 24px; }
  .cta-text { text-align: center; }

  .cat-body .btn { white-space: normal; text-align: left; }
}

@media (max-width: 560px) {
  .calc-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }


  .calc-chips { display: none; }


  .popular-searches { display: none; }
  .float-card { padding: 10px 12px; font-size: .74rem; }
  .float-card .icon-chip { width: 34px; height: 34px; }
  .fc-percent { top: 2%; left: 0; }
  .fc-pie { right: 0; }
  .fc-graph { left: 0; }
  .fc-formula { right: 0; }
  .sec-head-row { flex-direction: column; align-items: flex-start; gap: 8px; }


  .cat-card { flex-direction: column; gap: 18px; padding: 26px; }
  .icon-chip.big { width: 60px; height: 60px; }
  .icon-chip.big img { width: 30px; height: 30px; }
  .cat-body p { max-width: none; }


  .hero-title { font-size: 2rem; }
  .hero-search { flex-wrap: wrap; }
  .hero-search .btn { flex: 1; }
}

@media (max-width: 420px) {

  .stat { gap: 10px; justify-content: flex-start; }
  .icon-chip { width: 44px; height: 44px; }
  .icon-chip img { width: 22px; height: 22px; }
  .stat-text strong { font-size: 1.1rem; }
  .stat-text span { font-size: .78rem; }
  .calc-device { width: 260px; }
}