:root {
  --bg: #060913;
  --bg-soft: #0a1020;
  --card: rgba(10, 16, 31, 0.72);
  --card-strong: rgba(8, 12, 24, 0.9);
  --line: rgba(145, 172, 255, 0.18);
  --line-strong: rgba(136, 241, 255, 0.28);
  --text: #f4f7ff;
  --muted: #9ba9c7;
  --accent: #71f6ff;
  --accent-2: #6d7dff;
  --accent-3: #9a6bff;
  --glow: 0 24px 80px rgba(19, 28, 61, 0.45);
  --radius: 24px;
  --radius-sm: 18px;
  --container: 1200px;
  --spot-x: 50%;
  --spot-y: 20%;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 10%, rgba(113, 246, 255, 0.12), transparent 28%),
    radial-gradient(circle at 82% 16%, rgba(109, 125, 255, 0.14), transparent 24%),
    radial-gradient(circle at 50% 100%, rgba(154, 107, 255, 0.09), transparent 30%),
    linear-gradient(180deg, #050811 0%, #060a14 38%, #05070f 100%);
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.032) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.92), transparent 88%);
  z-index: -4;
}

body::after {
  background: radial-gradient(circle at var(--spot-x) var(--spot-y), rgba(113, 246, 255, 0.1), transparent 18%);
  z-index: -3;
}

.noise {
  position: fixed;
  inset: 0;
  opacity: 0.045;
  z-index: -2;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.9) 0.7px, transparent 0.8px),
    radial-gradient(circle at 78% 64%, rgba(255, 255, 255, 0.65) 0.7px, transparent 0.8px),
    radial-gradient(circle at 52% 35%, rgba(255, 255, 255, 0.5) 0.7px, transparent 0.8px);
  background-size: 24px 24px;
}

.aurora {
  position: fixed;
  border-radius: 999px;
  filter: blur(90px);
  opacity: 0.22;
  z-index: -1;
  pointer-events: none;
  animation: floatAurora 15s ease-in-out infinite;
}

.aurora-a {
  width: 320px;
  height: 320px;
  left: -100px;
  top: 90px;
  background: rgba(113, 246, 255, 0.3);
}

.aurora-b {
  width: 360px;
  height: 360px;
  right: -120px;
  top: 260px;
  background: rgba(109, 125, 255, 0.26);
  animation-delay: -5s;
}

.aurora-c {
  width: 300px;
  height: 300px;
  left: 30%;
  bottom: -140px;
  background: rgba(154, 107, 255, 0.22);
  animation-delay: -8s;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px);
  background: rgba(5, 9, 18, 0.62);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--text);
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  position: relative;
  background:
    linear-gradient(135deg, rgba(113, 246, 255, 1), rgba(109, 125, 255, 0.9) 55%, rgba(154, 107, 255, 0.95));
  box-shadow: 0 0 32px rgba(113, 246, 255, 0.24);
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 11px;
}

.brand-mark::after {
  inset: 15px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  border: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.08;
}

.brand-text small,
.eyebrow {
  color: var(--accent);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 12px;
}

.nav,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.lang-box {
  display: flex;
  align-items: center;
}

.lang-switcher {
  min-width: 120px;
  padding: 10px 12px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
}

.nav a,
.footer-links a {
  text-decoration: none;
  color: var(--muted);
  padding: 10px 14px;
  border-radius: 999px;
  transition: 0.25s ease;
}

.text-link,
.card-link {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.25s ease, color 0.25s ease;
}

.text-link:hover,
.card-link:hover {
  color: #b8fbff;
  opacity: 0.96;
}

.text-link {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.nav a:hover,
.nav a.active,
.footer-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.hero {
  padding: 78px 0 38px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 28px;
  align-items: center;
}

h1,
h2,
h3 {
  margin: 0 0 14px;
  line-height: 1.08;
}

h1 {
  font-size: clamp(42px, 6vw, 78px);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(28px, 4vw, 48px);
  letter-spacing: -0.02em;
}

h3 {
  font-size: 22px;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.78;
}

.lead {
  max-width: 680px;
  font-size: 18px;
}

.badge-row,
.cta-row,
.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.badge-row {
  margin-top: 24px;
}

.cta-row {
  margin-top: 26px;
}

.trust-strip {
  margin-top: 22px;
}

.badge,
.trust-strip span,
.download-tag {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: #dce5ff;
  font-size: 13px;
}

.badge-accent {
  color: #071019;
  background: linear-gradient(135deg, #71f6ff, #8be7ff, #8f8cff);
  border-color: transparent;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 168px;
  padding: 15px 24px;
  border-radius: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.btn:hover {
  transform: translateY(-3px);
}

.btn-primary {
  color: #061019;
  background: linear-gradient(135deg, #71f6ff 0%, #6d7dff 100%);
  box-shadow: 0 16px 36px rgba(75, 140, 255, 0.3);
}

.btn-secondary,
.btn-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-ghost:hover,
.btn-secondary:hover {
  border-color: rgba(113, 246, 255, 0.34);
}

.hero-visual,
.feature-card,
.scenario-card,
.download-card,
.requirement-card,
.shot-card,
.stat-card,
.timeline-item,
.notice-card,
.doc-card,
.faq-item {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(13, 20, 38, 0.86), rgba(8, 12, 24, 0.82));
  border: 1px solid var(--line);
  box-shadow: var(--glow);
}

.hero-visual::before,
.feature-card::before,
.scenario-card::before,
.download-card::before,
.timeline-item::before,
.notice-card::before,
.doc-card::before,
.faq-item::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.06) 48%, transparent 60%);
  transform: translateX(-120%);
  transition: transform 0.9s ease;
}

.hero-visual:hover::before,
.feature-card:hover::before,
.scenario-card:hover::before,
.download-card:hover::before,
.timeline-item:hover::before,
.notice-card:hover::before,
.doc-card:hover::before,
.faq-item:hover::before {
  transform: translateX(120%);
}

.hero-visual {
  padding: 18px;
  border-radius: 28px;
  transform-style: preserve-3d;
}

.control-panel {
  border-radius: 24px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 30%),
    rgba(7, 12, 24, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.panel-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 15px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
}

.panel-top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
}

.panel-top strong {
  margin-left: auto;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #dce6ff;
}

.panel-body {
  padding: 26px;
}

.network-core {
  position: relative;
  width: min(340px, 100%);
  aspect-ratio: 1;
  margin: 0 auto 20px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, rgba(113, 246, 255, 0.14), transparent 42%),
    radial-gradient(circle at center, rgba(109, 125, 255, 0.18), transparent 62%);
  border: 1px solid rgba(113, 246, 255, 0.15);
}

.network-core::before,
.network-core::after {
  content: "";
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  border: 1px dashed rgba(113, 246, 255, 0.22);
  animation: spin 18s linear infinite;
}

.network-core::after {
  inset: 24%;
  border-color: rgba(154, 107, 255, 0.26);
  animation-direction: reverse;
  animation-duration: 14s;
}

.pulse-ring {
  position: absolute;
  inset: 50%;
  translate: -50% -50%;
  border-radius: 50%;
  border: 1px solid rgba(113, 246, 255, 0.26);
  animation: pulseRing 4s ease-out infinite;
}

.ring-1 { width: 30%; height: 30%; }
.ring-2 { width: 54%; height: 54%; animation-delay: -1.2s; }
.ring-3 { width: 78%; height: 78%; animation-delay: -2.4s; }

.core-dot {
  position: absolute;
  inset: 50%;
  width: 18px;
  height: 18px;
  translate: -50% -50%;
  border-radius: 50%;
  background: linear-gradient(135deg, #71f6ff, #6d7dff);
  box-shadow: 0 0 26px rgba(113, 246, 255, 0.7);
}

.orbit-tag {
  position: absolute;
  padding: 8px 10px;
  font-size: 12px;
  border-radius: 999px;
  color: #dce8ff;
  background: rgba(10, 18, 33, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.orbit-a { top: 14%; left: 50%; transform: translateX(-50%); }
.orbit-b { right: 12%; top: 50%; transform: translateY(-50%); }
.orbit-c { bottom: 14%; left: 50%; transform: translateX(-50%); }
.orbit-d { left: 12%; top: 50%; transform: translateY(-50%); }

.signal-grid,
.feature-grid,
.scenario-grid,
.download-grid,
.screenshot-grid,
.faq-list,
.doc-grid,
.timeline {
  display: grid;
  gap: 18px;
}

.signal-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 18px;
}

.signal-card {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.signal-card label,
.trace-line span,
.stat-label,
.timeline-date {
  display: block;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.signal-card strong,
.trace-line b {
  display: block;
  margin-top: 8px;
  color: var(--text);
}

.ok {
  color: var(--accent);
}

.trace-box {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.trace-line {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.trace-line:last-child {
  border-bottom: 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding-bottom: 12px;
}

.floating-download {
  position: sticky;
  top: 82px;
  z-index: 40;
  padding: 10px 0 0;
}

.floating-download-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-radius: 20px;
  background: rgba(8, 12, 24, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  box-shadow: var(--glow);
}

.floating-download-inner p {
  font-size: 13px;
}

.stat-card,
.feature-card,
.scenario-card,
.download-card,
.requirement-card,
.timeline-item,
.notice-card,
.doc-card,
.faq-item {
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.stat-card:hover,
.feature-card:hover,
.scenario-card:hover,
.download-card:hover,
.timeline-item:hover,
.notice-card:hover,
.doc-card:hover,
.faq-item:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
}

.stat-value {
  display: block;
  margin-bottom: 10px;
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 800;
  color: var(--accent);
}

.section {
  padding: 76px 0;
}

.alt-section {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), rgba(255, 255, 255, 0.03));
}

.section-head {
  max-width: 760px;
  margin-bottom: 28px;
}

.feature-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

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

.download-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.requirement-card {
  border-radius: var(--radius);
  padding: 24px;
}

.mini-label {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.shot-card {
  border-radius: var(--radius);
  padding: 20px;
  background: linear-gradient(180deg, rgba(13, 20, 38, 0.86), rgba(8, 12, 24, 0.82));
  border: 1px solid var(--line);
  box-shadow: var(--glow);
}

.window-shot {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  margin-bottom: 18px;
}

.shot-top {
  display: flex;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
}

.shot-top span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.24);
}

.shot-body {
  padding: 18px;
  display: grid;
  gap: 14px;
}

.shot-body.dual {
  grid-template-columns: 1fr 1fr;
}

.shot-pane {
  min-height: 110px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(113, 246, 255, 0.12), rgba(109, 125, 255, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.shot-pane-lg {
  min-height: 150px;
}

.shot-pane.accent {
  background: linear-gradient(135deg, rgba(109, 125, 255, 0.18), rgba(154, 107, 255, 0.22));
}

.shot-lines,
.shot-metrics {
  display: grid;
  gap: 10px;
}

.shot-lines span,
.shot-metrics b {
  display: block;
  min-height: 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #dce8ff;
  padding: 8px 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.table-wrap {
  overflow-x: auto;
}

.login-form {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.login-input {
  min-width: 220px;
  padding: 14px 16px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
}

.login-error {
  margin-top: 12px;
  color: #ff8f8f;
}

.trend-chart {
  width: 100%;
  max-width: 100%;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.hidden {
  display: none !important;
}

.pool-file-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: #dbe4ff;
  line-height: 1.9;
}

.pool-file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.pool-file-meta em {
  font-style: normal;
  color: #8fa8dc;
}

.pool-file-delete {
  flex-shrink: 0;
  border: 1px solid rgba(255, 95, 95, 0.24);
  background: rgba(255, 95, 95, 0.1);
  color: #ffd6d6;
  border-radius: 12px;
  padding: 8px 12px;
  cursor: pointer;
  transition: 0.2s ease;
}

.pool-file-delete:hover {
  background: rgba(255, 95, 95, 0.16);
  border-color: rgba(255, 95, 95, 0.34);
}

.pool-file-delete:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.upload-form {
  margin-top: 14px;
}

.upload-result {
  margin-top: 16px;
}

.upload-result-card {
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(113, 246, 255, 0.16);
  background: rgba(8, 14, 28, 0.72);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
}

.upload-result-card strong {
  display: inline-block;
  margin-bottom: 10px;
  color: #eef4ff;
}

.upload-result-card ul {
  margin: 0;
  padding-left: 18px;
  color: #c6d8ff;
  line-height: 1.8;
}

.upload-result-split {
  height: 1px;
  margin: 12px 0;
  background: linear-gradient(90deg, transparent, rgba(113, 246, 255, 0.2), transparent);
}

.dashboard-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

.dashboard-table th,
.dashboard-table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: #dbe4ff;
  font-size: 14px;
}

.dashboard-table th {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.scenario-index {
  display: inline-flex;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.18em;
}

.download-card .btn {
  margin-top: 20px;
  width: 100%;
}

.download-card code {
  color: #dce7ff;
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 8px;
  border-radius: 8px;
}

.timeline-date {
  margin-bottom: 12px;
  color: var(--accent);
}

.page {
  padding: 60px 0 86px;
}

.page-hero {
  margin-bottom: 24px;
}

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

.doc-card ul {
  margin: 0;
  padding-left: 18px;
  color: #d7e2ff;
  line-height: 1.95;
}

.faq-list {
  grid-template-columns: 1fr;
}

.site-footer {
  padding: 34px 0 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(4, 8, 15, 0.55);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

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

.reveal-delay {
  transition-delay: 0.14s;
}

[data-tilt] {
  transform-style: preserve-3d;
  transition: transform 0.18s ease-out;
}

@keyframes floatAurora {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(20px, -18px, 0) scale(1.08); }
}

@keyframes pulseRing {
  0% { transform: translate(-50%, -50%) scale(0.88); opacity: 0.8; }
  100% { transform: translate(-50%, -50%) scale(1.08); opacity: 0.12; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (max-width: 1180px) {
  .feature-grid-3,
  .download-grid,
  .requirements-grid,
  .screenshot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .hero-grid,
  .stats,
  .feature-grid,
  .feature-grid-3,
  .scenario-grid,
  .download-grid,
  .requirements-grid,
  .screenshot-grid,
  .doc-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .nav-wrap {
    min-height: auto;
    padding: 14px 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 44px;
  }

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

  .floating-download {
    top: 74px;
  }

  .floating-download-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}