.pc {
  --pc-navy: #0b3a8f;
  --pc-cyan: #2bb8f3;
  --pc-blue-fill: linear-gradient(180deg, #2bb5f7, #137fe8);
  position: relative;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 10px 24px;
  box-sizing: border-box;
  overflow: hidden;
  font-family: "Roboto", system-ui, sans-serif;
  background:
    radial-gradient(ellipse 45% 75% at 100% 25%, rgba(70, 140, 235, 0.55), transparent 70%),
    radial-gradient(ellipse 60% 50% at 10% 100%, rgba(255, 255, 255, 0.8), transparent 70%),
    linear-gradient(110deg, #eef8fe 0%, #dcf0fc 40%, #c3e2f9 70%, #93c3f3 100%);
}
/* Hai vệt sóng sáng chạy ngang nền */
.pc::before,
.pc::after {
  content: "";
  position: absolute;
  left: -20%;
  width: 140%;
  height: 70%;
  border-radius: 50%;
  pointer-events: none;
}
.pc::before {
  top: 50%;
  border-top: 2px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 -24px 60px rgba(255, 255, 255, 0.35);
  transform: rotate(-6deg);
}
.pc::after {
  top: 60%;
  border-top: 1px solid rgba(255, 255, 255, 0.5);
  transform: rotate(-3deg);
}
.pc > * {
  position: relative;
  z-index: 1;
}

.pc-logo {
  width: clamp(200px, 17vw, 326px);
}
.pc-logo img,
.pc-phone img {
  display: block;
  width: 100%;
}

/* Nút lục giác: nền ngoài làm viền sáng, ::before là lõi xanh */
.pc-home {
  --cut: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 244px;
  height: 58px;
  margin-top: 16px;
  isolation: isolate;
  color: #fff;
  font-size: 21px;
  font-weight: 700;
  text-decoration: none;
  background: linear-gradient(180deg, #d6f4ff, #55c4f6);
  clip-path: polygon(
    var(--cut) 0,
    calc(100% - var(--cut)) 0,
    100% 50%,
    calc(100% - var(--cut)) 100%,
    var(--cut) 100%,
    0 50%
  );
  transition: filter 0.15s;
}
.pc-home::before {
  content: "";
  position: absolute;
  inset: 4px;
  z-index: -1;
  background: linear-gradient(180deg, #3196f4, #1463d6);
  clip-path: inherit;
}
.pc-home:hover {
  filter: brightness(1.08);
}
.pc-home svg {
  width: 30px;
  height: 30px;
}

.pc-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  align-items: center;
  gap: clamp(32px, 7vw, 130px);
  width: min(1160px, 100%);
  margin-top: 36px;
}
.pc-phone {
  position: relative;
  justify-self: center;
  width: 100%;
  max-width: 440px;
}
.pc-side {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pc-panel {
  position: relative;
  width: 100%;
  max-width: 556px;
  box-sizing: border-box;
  padding: 64px 32px 24px;
  border: 1px solid rgba(74, 168, 236, 0.45);
  border-top: 3px solid #5ab2ef;
  border-bottom: 5px solid #3c9ae8;
  border-radius: 20px;
  isolation: isolate;
  background: linear-gradient(180deg, rgba(150, 210, 245, 0.55), rgba(185, 228, 250, 0.4));
  box-shadow:
    inset 0 0 40px rgba(255, 255, 255, 0.35),
    0 18px 40px rgba(30, 110, 200, 0.18);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  text-align: center;
}
.pc-panel-title {
  position: absolute;
  top: 0;
  left: 50%;
  margin: 0;
  padding: 6px 48px;
  border: 2px solid #e6f8ff;
  border-radius: 24px;
  background: linear-gradient(180deg, #34cdf7, #1aa2ef);
  box-shadow: 0 4px 12px rgba(26, 140, 230, 0.35);
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  white-space: nowrap;
  transform: translate(-50%, -60%);
}
.pc-slogan {
  margin: 0 0 30px;
  color: var(--pc-navy);
  font-size: 22px;
  font-weight: 700;
}

.pc-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  width: min(416px, 100%);
  height: 78px;
  box-sizing: border-box;
  margin: 0 auto 34px;
  padding: 0 12px 0 4px;
  border: 2px solid #d4e9f8;
  border-radius: 40px;
  background: linear-gradient(180deg, #fff, #edf5fb);
  box-shadow: 0 4px 10px rgba(30, 110, 200, 0.15);
  color: #1d2733;
  text-decoration: none;
  transition:
    transform 0.15s,
    border-color 0.15s,
    box-shadow 0.15s;
}
.pc-btn:hover {
  border-color: #8fd3fb;
  box-shadow: 0 8px 20px rgba(30, 110, 200, 0.25);
  transform: translateY(-2px);
}
/* Gạch nhấn xanh dưới mỗi nút */
.pc-btn::after {
  content: "";
  position: absolute;
  bottom: -7px;
  left: 50%;
  width: 124px;
  height: 6px;
  border-radius: 0 0 4px 4px;
  background: var(--pc-cyan);
  transform: translateX(-50%);
}
.pc-btn-os {
  position: relative;
  display: grid;
  flex: none;
  place-items: center;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #6cc0ff, #1673e0 70%);
  box-shadow:
    inset 0 -4px 8px rgba(0, 40, 120, 0.35),
    0 2px 6px rgba(20, 100, 200, 0.3);
  color: #fff;
  transition: transform 0.25s;
}
.pc-btn:hover .pc-btn-os {
  transform: scale(1.06) rotate(-8deg);
}
.pc-btn-os svg {
  width: 36px;
  height: 36px;
}
.pc-btn-text {
  flex: 1;
  font-size: 24px;
  font-weight: 500;
}
.pc-btn-dl {
  position: relative;
  display: grid;
  flex: none;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--pc-blue-fill);
  color: #fff;
}
.pc-btn-dl svg {
  width: 32px;
  height: 32px;
}

.pc-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  row-gap: 10px;
  margin: 0;
  padding: 16px 0 0;
  border-top: 1px dashed rgba(60, 154, 232, 0.45);
  list-style: none;
}
.pc-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  color: var(--pc-navy);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}
.pc-features li + li {
  border-left: 1px solid rgba(60, 154, 232, 0.35);
}
.pc-features svg {
  flex: none;
  width: 30px;
  height: 30px;
  box-sizing: border-box;
  padding: 6px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 6px rgba(30, 110, 200, 0.18);
  color: #1a8de9;
}

.pc-support {
  margin-top: 56px;
  text-align: center;
}
.pc-support p {
  margin: 0 0 14px;
  color: var(--pc-navy);
  font-size: 19px;
  font-weight: 500;
}
.pc-cskh {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  height: 66px;
  box-sizing: border-box;
  padding: 0 9px;
  border: 2px solid #fff;
  border-radius: 33px;
  background: linear-gradient(180deg, #fff, #edf5fb);
  box-shadow: 0 6px 16px rgba(30, 110, 200, 0.18);
  color: #12305f;
  text-align: left;
  text-decoration: none;
  transition:
    transform 0.15s,
    border-color 0.15s,
    box-shadow 0.15s;
}
.pc-cskh:hover {
  border-color: #8fd3fb;
  box-shadow: 0 10px 22px rgba(30, 110, 200, 0.26);
  transform: translateY(-2px);
}
.pc-cskh-icon {
  position: relative;
  display: grid;
  flex: none;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--pc-blue-fill);
  color: #fff;
}
.pc-cskh-icon svg {
  width: 26px;
  height: 26px;
}
.pc-cskh-dot {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 13px;
  height: 13px;
}
.pc-cskh-text {
  display: flex;
  flex-direction: column;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
}
.pc-cskh-text small {
  color: #1a8de9;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
}
.pc-cskh-go {
  display: grid;
  flex: none;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-left: 12px;
  border-radius: 50%;
  background: #e3f2fd;
  color: #1a8de9;
  transition:
    background 0.15s,
    color 0.15s;
}
.pc-cskh-go svg {
  width: 20px;
  height: 20px;
  transition: translate 0.15s;
}
.pc-cskh:hover .pc-cskh-go {
  background: var(--pc-blue-fill);
  color: #fff;
}
.pc-cskh:hover .pc-cskh-go svg {
  translate: 3px 0;
}

@media (min-width: 901px) and (max-height: 820px) {
  .pc {
    padding-top: 20px;
  }
  .pc-logo {
    width: clamp(180px, 14vw, 280px);
  }
  .pc-body {
    margin-top: 24px;
  }
  .pc-panel {
    padding-top: 52px;
  }
  .pc-slogan {
    margin-bottom: 22px;
  }
  .pc-btn {
    margin-bottom: 26px;
  }
  .pc-support {
    margin-top: 28px;
  }
}

@media (max-width: 900px) {
  .pc-body {
    grid-template-columns: minmax(0, 1fr);
  }
  .pc-phone {
    max-width: 300px;
  }
  .pc-panel {
    padding: 56px 16px 40px;
  }
  .pc-slogan,
  .pc-support p {
    font-size: 17px;
  }
  .pc-btn-text {
    font-size: 20px;
  }
  .pc-cskh-text {
    font-size: 18px;
  }
}