:root {
  --bg-a: #e8f3ff;
  --bg-b: #f7fbff;
  --ink: #12243e;
  --ink-soft: #4b6183;
  --line: #c7daf3;
  --line-strong: #97bce9;
  --brand: #0d7eff;
  --brand-deep: #0459c2;
  --brand-cyan: #00cfff;
  --accent: #11dcb7;
  --surface: #ffffff;
  --surface-soft: rgba(255, 255, 255, 0.78);
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --shadow: 0 18px 40px rgba(8, 53, 115, 0.12);
  --shadow-soft: 0 10px 28px rgba(8, 53, 115, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  line-height: 1.68;
  text-rendering: optimizeLegibility;
  background:
    radial-gradient(circle at 8% -15%, rgba(13, 126, 255, 0.35), transparent 42%),
    radial-gradient(circle at 88% -10%, rgba(0, 207, 255, 0.24), transparent 35%),
    linear-gradient(180deg, var(--bg-a) 0%, var(--bg-b) 42%, #eef6ff 100%);
  overflow-x: hidden;
  isolation: isolate;
}

body > :not(.fx-layer) {
  position: relative;
  z-index: 2;
}

.fx-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.fx-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.95;
}

.fx-grid {
  position: absolute;
  left: -15%;
  top: 8%;
  width: 130%;
  height: 85%;
  background-image:
    linear-gradient(to right, rgba(8, 71, 145, 0.13) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(8, 71, 145, 0.13) 1px, transparent 1px);
  background-size: 48px 48px;
  transform: perspective(960px) rotateX(62deg) translateY(-4%);
  transform-origin: center top;
  opacity: 0.4;
  animation: grid-drift 20s linear infinite;
}

.fx-scan {
  position: absolute;
  left: -8%;
  width: 116%;
  height: 24vh;
  top: -28vh;
  background: linear-gradient(
    180deg,
    rgba(118, 220, 255, 0),
    rgba(118, 220, 255, 0.1),
    rgba(118, 220, 255, 0.26),
    rgba(118, 220, 255, 0.06),
    rgba(118, 220, 255, 0)
  );
  mix-blend-mode: screen;
  filter: blur(1px);
  animation: scan-sweep 7.8s linear infinite;
}

.fx-radar {
  position: absolute;
  left: -180px;
  bottom: -200px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  border: 1px solid rgba(30, 126, 223, 0.22);
  box-shadow:
    0 0 0 48px rgba(30, 126, 223, 0.07),
    0 0 0 98px rgba(30, 126, 223, 0.04),
    inset 0 0 70px rgba(0, 207, 255, 0.12);
  animation: radar-pulse 6s ease-in-out infinite;
}

.fx-cursor {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  opacity: 0;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(0, 207, 255, 0.24) 0%, rgba(13, 126, 255, 0) 72%);
  transition: opacity 0.2s ease;
}

body:hover .fx-cursor {
  opacity: 1;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(18, 63, 124, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(18, 63, 124, 0.06) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 85%);
}

body::after {
  content: "";
  position: fixed;
  width: 520px;
  height: 520px;
  right: -150px;
  top: -160px;
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 207, 255, 0.28) 0%, rgba(13, 126, 255, 0) 70%);
  animation: orb-drift 9s ease-in-out infinite alternate;
}

@keyframes orb-drift {
  0% {
    transform: translateX(0) translateY(0);
  }
  100% {
    transform: translateX(-20px) translateY(20px);
  }
}

@keyframes grid-drift {
  0% {
    background-position: 0 0, 0 0;
  }
  100% {
    background-position: 48px 32px, 24px 48px;
  }
}

@keyframes scan-sweep {
  0% {
    top: -28vh;
    opacity: 0.35;
  }
  15% {
    opacity: 0.7;
  }
  50% {
    opacity: 0.28;
  }
  100% {
    top: 108vh;
    opacity: 0;
  }
}

@keyframes radar-pulse {
  0% {
    transform: scale(0.94);
    opacity: 0.75;
  }
  50% {
    transform: scale(1.02);
    opacity: 0.95;
  }
  100% {
    transform: scale(0.94);
    opacity: 0.75;
  }
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 10px;
  z-index: 120;
  border-radius: 8px;
  padding: 8px 12px;
  background: #072a58;
  color: #fff;
}

.skip-link:focus {
  left: 10px;
}

.wrap {
  width: min(1140px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid rgba(153, 189, 231, 0.85);
  backdrop-filter: blur(12px);
  background: linear-gradient(180deg, rgba(241, 248, 255, 0.92), rgba(241, 248, 255, 0.84));
}

.site-header::after {
  content: "";
  display: block;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(13, 126, 255, 0.65), transparent);
}

.official-ribbon {
  border-bottom: 1px solid rgba(151, 188, 233, 0.8);
  background: linear-gradient(90deg, #e6f2ff, #e7f6ff 50%, #e9f7ff);
}

.official-ribbon-inner {
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  color: #245088;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-weight: 700;
  font-size: 0.87rem;
  letter-spacing: 0.4px;
}

.official-ribbon-inner span {
  position: relative;
  white-space: nowrap;
}

.official-ribbon-inner span:not(:last-child)::after {
  content: "|";
  position: absolute;
  right: -12px;
  color: #7fa2ca;
}

.nav-wrap {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  min-height: 70px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.brand-badge {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  display: inline-grid;
  place-items: center;
  color: #fff;
  background:
    linear-gradient(145deg, #0c8eff 0%, #00cfff 100%);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.65) inset,
    0 10px 22px rgba(0, 102, 210, 0.3);
}

.brand-text {
  font-size: 1.06rem;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: 26px;
}

.main-nav a {
  position: relative;
  text-decoration: none;
  color: var(--ink-soft);
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand), var(--brand-cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.main-nav a:hover {
  color: #143e70;
}

.main-nav a:hover::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.9);
  color: #1e3f68;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 11px 21px;
  text-decoration: none;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-weight: 700;
  letter-spacing: 0.2px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-120%);
  background: linear-gradient(115deg, transparent 15%, rgba(255, 255, 255, 0.42), transparent 70%);
  transition: transform 0.5s ease;
}

.btn:hover::before {
  transform: translateX(120%);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand-deep) 0%, var(--brand) 55%, var(--brand-cyan) 100%);
  box-shadow: 0 12px 24px rgba(5, 89, 194, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 16px 30px rgba(5, 89, 194, 0.34);
}

.btn-secondary {
  color: #0c4f9d;
  border-color: #a7c6eb;
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(8px);
}

.btn-block {
  width: 100%;
}

.hero {
  padding: 72px 0 52px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 28px;
  align-items: start;
}

.hero-copy {
  position: relative;
  padding: 18px 6px 14px 0;
}

.hero-copy::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 0;
  width: 4px;
  height: 130px;
  border-radius: 999px;
  background: linear-gradient(180deg, #00cfff, #0d7eff);
  box-shadow: 0 0 18px rgba(13, 126, 255, 0.45);
}

.kicker {
  margin: 0 0 10px;
  color: #2f5f96;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.4px;
}

h1 {
  margin: 0;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: clamp(2.05rem, 5.2vw, 3.35rem);
  line-height: 1.18;
  letter-spacing: 0.4px;
}

.lead {
  margin: 18px 0 24px;
  color: #425d82;
  font-size: 1.05rem;
  max-width: 58ch;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-points {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-points li {
  border: 1px solid #b9d2f0;
  border-radius: 999px;
  padding: 7px 13px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.86), rgba(235, 244, 255, 0.86));
  color: #36557d;
  font-size: 0.91rem;
  backdrop-filter: blur(8px);
}

.hud-panel {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.hud-item {
  border: 1px solid #b8d2f0;
  border-radius: 14px;
  padding: 10px 12px;
  background:
    radial-gradient(circle at 100% 0, rgba(0, 207, 255, 0.2), transparent 52%),
    linear-gradient(150deg, rgba(255, 255, 255, 0.9), rgba(233, 244, 255, 0.88));
  box-shadow: 0 8px 18px rgba(8, 53, 115, 0.08);
}

.hud-item span {
  display: block;
  color: #4d6689;
  font-size: 0.84rem;
}

.hud-item strong {
  display: block;
  margin-top: 3px;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  color: #0d4f9f;
  font-size: 1.05rem;
  letter-spacing: 0.3px;
}

.status-card {
  position: relative;
  overflow: hidden;
  border: 1px solid #3b6ea4;
  border-radius: var(--radius-lg);
  padding: 22px;
  background:
    radial-gradient(circle at 88% 12%, rgba(0, 207, 255, 0.24), transparent 35%),
    linear-gradient(150deg, #0d2443 0%, #12335f 100%);
  box-shadow: 0 18px 36px rgba(8, 38, 83, 0.28);
  color: #dcecff;
}

.status-card::before {
  content: "";
  position: absolute;
  left: -20%;
  top: 0;
  width: 55%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #65deff, transparent);
  animation: status-scan 4s linear infinite;
}

.status-card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(129, 231, 255, 0.2);
  border-radius: 18px;
  pointer-events: none;
}

@keyframes status-scan {
  0% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(280%);
  }
}

.status-card h2 {
  margin: 0;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: 1.12rem;
  color: #ebf6ff;
}

.quality {
  margin: 7px 0 12px;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: 1.95rem;
  line-height: 1.1;
  color: #81e7ff;
  text-shadow: 0 0 16px rgba(129, 231, 255, 0.4);
  font-weight: 700;
}

.meter {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(194, 221, 255, 0.2);
  overflow: hidden;
}

.meter span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #12ddb7, #00cfff, #0d7eff);
}

.status-card ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: #b8d6fb;
}

.section {
  padding: 58px 0;
  content-visibility: auto;
  contain-intrinsic-size: 1px 680px;
}

.section-soft {
  background:
    linear-gradient(180deg, rgba(231, 243, 255, 0.75), rgba(237, 247, 255, 0.75));
  border-top: 1px solid rgba(164, 196, 233, 0.65);
  border-bottom: 1px solid rgba(164, 196, 233, 0.65);
}

.section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.section-head h2 {
  margin: 0;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: clamp(1.6rem, 3.8vw, 2.2rem);
  line-height: 1.25;
  letter-spacing: 0.35px;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 66ch;
}

.card-grid {
  display: grid;
  gap: 14px;
}

.card-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.card-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 19px;
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.95), rgba(240, 248, 255, 0.88));
  box-shadow: var(--shadow-soft);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, #0d7eff, #00cfff);
  opacity: 0.72;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: 0 16px 30px rgba(8, 53, 115, 0.15);
}

.card h3 {
  margin: 0 0 8px;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: #425f85;
}

.pricing-grid .plan {
  position: relative;
}

.price {
  margin: 8px 0 14px;
  line-height: 1;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: 2.12rem;
  letter-spacing: 0.3px;
  color: #0952a8;
  font-weight: 700;
}

.price span {
  margin-left: 4px;
  font-size: 0.94rem;
  color: #597193;
  font-weight: 500;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.plan ul {
  margin: 0 0 16px;
  padding-left: 18px;
  color: #425d80;
}

.tag {
  margin: 0 0 8px;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  background: linear-gradient(90deg, rgba(17, 220, 183, 0.18), rgba(0, 207, 255, 0.18));
  border: 1px solid rgba(0, 163, 217, 0.28);
  color: #05618d;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
}

.plan-hot {
  border-color: #82baf0;
  box-shadow: 0 16px 30px rgba(8, 53, 115, 0.2);
}

.section-cta {
  padding-top: 40px;
}

.cta {
  border: 1px solid #9dc6f1;
  border-radius: var(--radius-lg);
  padding: 38px 26px;
  text-align: center;
  background:
    radial-gradient(circle at 10% 0%, rgba(13, 126, 255, 0.22), transparent 40%),
    radial-gradient(circle at 90% 100%, rgba(17, 220, 183, 0.22), transparent 36%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(238, 246, 255, 0.92));
  box-shadow: var(--shadow);
}

.cta h2 {
  margin: 0;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: clamp(1.55rem, 4.2vw, 2.3rem);
}

.cta p {
  max-width: 56ch;
  margin: 10px auto 18px;
  color: #456286;
}

.faq {
  display: grid;
  gap: 10px;
}

details {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.95), rgba(241, 248, 255, 0.88));
  box-shadow: var(--shadow-soft);
  padding: 12px 14px;
}

summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: #1f3f67;
}

summary::-webkit-details-marker {
  display: none;
}

details p {
  margin: 8px 0 0;
  color: #436285;
}

.site-footer {
  padding: 36px 0 42px;
}

.footer-grid {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 18px;
  color: #486281;
}

.footer-grid p {
  margin: 0;
}

.footer-grid a {
  color: #2c578c;
}

.official-footnote {
  flex-basis: 100%;
  color: #215086;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
}

.download-hero {
  padding: 58px 0 30px;
}

.download-hero .wrap {
  border: 1px solid #c1d8f5;
  border-radius: var(--radius-lg);
  padding: 22px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.94), rgba(236, 245, 255, 0.86));
  box-shadow: var(--shadow-soft);
}

.download-hero p {
  margin: 10px 0 0;
  color: #496384;
  max-width: 64ch;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.download-card h2 {
  margin: 0;
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  font-size: 1.18rem;
}

.download-meta {
  margin: 6px 0 14px;
  color: #5a7294;
  font-size: 0.92rem;
}

.download-card ul {
  margin: 0 0 14px;
  padding-left: 18px;
  color: #435f84;
}

.note {
  margin-top: 16px;
  color: #596f8e;
  font-size: 0.92rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(241, 248, 255, 0.9));
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

th,
td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid #e1ebf9;
}

th {
  font-family: "Chakra Petch", "Noto Sans SC", sans-serif;
  background: #ecf5ff;
  color: #214870;
  font-weight: 700;
}

tr:last-child td {
  border-bottom: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .card-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .download-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 880px) {
  .nav-wrap {
    grid-template-columns: auto auto 1fr;
    gap: 12px;
  }

  .official-ribbon-inner {
    min-height: 34px;
    gap: 12px;
    font-size: 0.82rem;
  }

  .menu-toggle {
    display: inline-flex;
    justify-self: start;
  }

  .main-nav {
    display: none;
    grid-column: 1 / -1;
    flex-direction: column;
    gap: 8px;
    border-top: 1px solid var(--line);
    padding: 10px 0 4px;
    margin-top: 4px;
  }

  .main-nav.show {
    display: flex;
  }

  .nav-wrap > .btn {
    justify-self: end;
  }

  .hero-grid,
  .card-grid-3 {
    grid-template-columns: 1fr;
  }

  .hero-copy::before {
    display: none;
  }

  .hud-panel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .fx-grid {
    top: 3%;
    height: 78%;
  }
}

@media (max-width: 560px) {
  .official-ribbon-inner {
    justify-content: flex-start;
    overflow-x: auto;
    padding: 0 4vw;
  }

  .hero {
    padding-top: 50px;
  }

  .actions .btn {
    width: 100%;
  }

  .hero-points {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hud-panel {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 44px 0;
  }

  body::after {
    width: 360px;
    height: 360px;
    right: -110px;
    top: -130px;
  }

  .fx-radar {
    width: 420px;
    height: 420px;
    left: -140px;
    bottom: -170px;
  }

  .fx-cursor {
    width: 170px;
    height: 170px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .fx-scan,
  .fx-grid,
  .fx-radar,
  .status-card::before {
    animation: none !important;
  }

  .fx-cursor {
    display: none;
  }
}