:root {
  color-scheme: dark;
  --bg: #05080c;
  --bg-2: #091119;
  --panel: rgba(255, 255, 255, 0.065);
  --panel-strong: rgba(255, 255, 255, 0.1);
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(134, 210, 255, 0.34);
  --text: #f4f8fb;
  --muted: #93a5b5;
  --soft: #c8d6e2;
  --blue: #67b7ff;
  --cyan: #5ee4d3;
  --green: #74e2a9;
  --yellow: #f9ca6b;
  --red: #ff6d8c;
  --shadow: 0 34px 100px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 12%, rgba(103, 183, 255, 0.24), transparent 28%),
    radial-gradient(circle at 80% 0%, rgba(94, 228, 211, 0.15), transparent 32%),
    linear-gradient(180deg, var(--bg), var(--bg-2) 42%, #06080d);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to bottom, black, rgba(0, 0, 0, 0.25) 70%, transparent);
}

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

button {
  font: inherit;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 14px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 14px 0 38px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(5, 8, 12, 0.7);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(22px);
}

.brand,
.nav-links,
.nav-actions,
.hero-actions,
.proof-row,
.window-chrome,
.traffic-lights,
.sidebar-brand,
.env-item,
.workspace-header,
.diagnostics,
.route-item,
.dmg-header,
.safety-grid {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  min-width: max-content;
  font-weight: 800;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
}

.nav-links {
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-action,
.download-action,
.primary-button,
.ghost-button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 800;
}

.nav-action {
  padding: 0 16px;
  color: #051018;
  background: var(--text);
}

.nav-actions {
  gap: 10px;
}

.download-action {
  padding: 0 16px;
  border: 1px solid rgba(103, 183, 255, 0.34);
  color: var(--soft);
  background: rgba(103, 183, 255, 0.12);
}

.hero {
  display: grid;
  min-height: calc(100vh - 118px);
  grid-template-columns: minmax(0, 0.92fr) minmax(430px, 1.08fr);
  gap: 52px;
  align-items: center;
  padding: 18px 0 84px;
}

.hero-copy {
  max-width: 650px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 0.96;
  letter-spacing: 0;
}

h1 span,
.feature-title span,
.safety-section h2 span {
  display: block;
}

h1 span:nth-child(2) {
  font-size: clamp(40px, 4.8vw, 66px);
  white-space: nowrap;
}

.usage-count {
  display: inline-flex;
  align-items: center;
  margin: -6px 0 16px;
  color: var(--text);
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 950;
  line-height: 1.2;
  text-shadow: 0 0 28px rgba(94, 228, 211, 0.22);
}

.usage-count::before {
  width: 8px;
  height: 8px;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 22px rgba(116, 226, 169, 0.7);
  content: "";
}

.lead {
  color: var(--soft);
  font-size: 18px;
  line-height: 1.85;
  overflow-wrap: break-word;
  text-wrap: pretty;
}

.hero-lead {
  max-width: 620px;
}

.hero-lead span {
  display: block;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 18px;
}

.compatibility-pill {
  display: inline-flex;
  max-width: 100%;
  min-height: 38px;
  align-items: center;
  margin: 0;
  padding: 0 14px;
  border: 1px solid rgba(103, 183, 255, 0.34);
  border-radius: 999px;
  color: var(--soft);
  background: rgba(103, 183, 255, 0.12);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.4;
}

.quick-line {
  margin: 18px 0 0;
  color: var(--text);
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 900;
  line-height: 1.45;
}

.quick-line span {
  display: block;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0 32px;
}

.primary-button,
.ghost-button {
  padding: 0 22px;
}

.primary-button {
  color: #061018;
  background: linear-gradient(135deg, var(--text), var(--blue));
  box-shadow: 0 20px 54px rgba(103, 183, 255, 0.22);
}

.ghost-button {
  border: 1px solid var(--line);
  color: var(--soft);
  background: rgba(255, 255, 255, 0.045);
}

.proof-row {
  flex-wrap: wrap;
  gap: 12px;
}

.proof-row div {
  min-width: 144px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
}

.proof-row strong {
  display: block;
  margin-bottom: 4px;
  font-size: 22px;
}

.proof-row span,
.sidebar-brand small,
.env-item small,
.workspace-header p,
.card-label,
.feature-card p,
.route-item p,
.section-title p,
.dmg-copy p,
.safety-section p,
.safety-grid span {
  color: var(--muted);
}

.proof-row span {
  font-size: 13px;
}

.account-stage {
  width: min(420px, 100%);
  justify-self: center;
  overflow: hidden;
  border: 1px solid rgba(94, 228, 211, 0.22);
  border-radius: 22px;
  background:
    radial-gradient(circle at 30% 20%, rgba(116, 226, 169, 0.08), transparent 34%),
    rgba(12, 24, 23, 0.96);
  box-shadow: var(--shadow);
}

.account-chrome {
  position: relative;
  height: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.22);
}

.account-chrome .traffic-lights {
  top: 50%;
  transform: translateY(-50%);
}

.account-panel {
  padding: 30px 22px 18px;
}

.account-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
}

.panel-logo {
  width: 60px;
  height: 60px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 18px;
  object-fit: cover;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.32);
}

.account-brand strong,
.account-brand small {
  display: block;
}

.account-brand strong {
  margin-bottom: 4px;
  font-size: 22px;
}

.account-brand small {
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.account-title {
  margin-bottom: 14px;
  color: var(--soft);
  font-size: 16px;
  font-weight: 900;
}

.account-list {
  position: relative;
  display: grid;
  gap: 10px;
}

.account-list::after {
  position: absolute;
  top: 6px;
  right: -8px;
  bottom: -76px;
  width: 1px;
  background: rgba(116, 226, 169, 0.16);
  content: "";
}

.account-card {
  display: grid;
  min-height: 88px;
  grid-template-columns: 14px 48px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.055);
}

.account-card.active {
  border-color: rgba(116, 226, 169, 0.46);
  background: rgba(116, 226, 169, 0.07);
}

.account-dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 20px rgba(116, 226, 169, 0.62);
}

.wechat-icon,
.custom-icon,
.plus-box {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px;
  font-weight: 950;
}

.wechat-icon {
  display: block;
  object-fit: cover;
  box-shadow: 0 12px 28px rgba(0, 213, 100, 0.2);
}

.custom-icon {
  display: block;
  object-fit: contain;
  padding: 6px;
  background: rgba(255, 255, 255, 0.1);
}

.plus-box {
  grid-column: 2;
  border: 1px solid var(--line);
  color: var(--soft);
  background: rgba(255, 255, 255, 0.055);
  font-size: 30px;
}

.account-info strong,
.account-info span,
.account-info small {
  display: block;
}

.account-info strong {
  margin-bottom: 4px;
  font-size: 21px;
}

.account-info span {
  color: var(--soft);
  font-size: 15px;
  font-weight: 800;
}

.account-info small {
  display: inline-flex;
  margin-top: 8px;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--green);
  background: rgba(116, 226, 169, 0.14);
  font-size: 12px;
  font-weight: 900;
}

.account-card em {
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--green);
  background: rgba(116, 226, 169, 0.12);
  font-style: normal;
  font-weight: 900;
  white-space: nowrap;
}

.add-account {
  grid-template-columns: 14px 48px minmax(0, 1fr);
}

.add-account .account-info {
  grid-column: 3;
}

.account-footer {
  display: grid;
  gap: 10px;
  margin-top: 64px;
  padding-top: 16px;
  border-top: 1px solid rgba(116, 226, 169, 0.18);
}

.login-status {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.055);
}

.login-status > span {
  width: 20px;
  height: 20px;
  border: 3px solid var(--green);
  border-radius: 50%;
  box-shadow: inset 0 0 0 5px rgba(116, 226, 169, 0.18);
}

.login-status strong,
.login-status small {
  display: block;
}

.login-status strong {
  color: var(--soft);
  font-size: 17px;
}

.login-status small {
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.account-footer button {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: var(--soft);
  background: rgba(255, 255, 255, 0.055);
  cursor: pointer;
  font-size: 16px;
  font-weight: 900;
}

.mac-stage {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), transparent 18%),
    rgba(7, 13, 20, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
}

.window-chrome {
  position: relative;
  height: 46px;
  justify-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.055);
}

.traffic-lights {
  position: absolute;
  left: 18px;
  gap: 8px;
}

.traffic-lights span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.traffic-lights span:nth-child(1) {
  background: #ff5f57;
}

.traffic-lights span:nth-child(2) {
  background: #ffbd2e;
}

.traffic-lights span:nth-child(3) {
  background: #28c840;
}

.window-title {
  color: var(--soft);
  font-size: 13px;
  font-weight: 800;
}

.app-window {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  min-height: 560px;
}

.sidebar {
  padding: 18px;
  border-right: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.045);
}

.sidebar-brand {
  gap: 11px;
  margin-bottom: 18px;
}

.mini-logo {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  object-fit: cover;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.26);
}

.sidebar-brand strong,
.sidebar-brand small {
  display: block;
}

.sidebar-brand small {
  margin-top: 2px;
  font-size: 11px;
}

.add-button {
  width: 100%;
  height: 36px;
  margin-bottom: 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  font-size: 22px;
}

.env-list {
  display: grid;
  gap: 8px;
}

.env-item {
  gap: 10px;
  min-height: 62px;
  padding: 10px;
  border: 1px solid transparent;
  border-radius: 12px;
}

.env-item.active {
  border-color: rgba(103, 183, 255, 0.25);
  background: rgba(103, 183, 255, 0.14);
}

.env-item > span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 20px rgba(116, 226, 169, 0.7);
}

.env-item:nth-child(3) > span {
  background: var(--yellow);
}

.env-item strong,
.env-item small {
  display: block;
}

.env-item strong {
  margin-bottom: 3px;
  font-size: 13px;
}

.env-item small {
  overflow: hidden;
  max-width: 156px;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 11px;
}

.workspace {
  padding: 24px;
  background:
    radial-gradient(circle at 74% 18%, rgba(94, 228, 211, 0.13), transparent 28%),
    rgba(4, 8, 13, 0.32);
}

.workspace-header {
  justify-content: space-between;
  margin-bottom: 20px;
}

.workspace-header p {
  margin-bottom: 4px;
  font-size: 12px;
}

.workspace-header h2 {
  margin: 0;
  font-size: 34px;
}

.status-pill {
  padding: 7px 11px;
  border: 1px solid rgba(116, 226, 169, 0.28);
  border-radius: 999px;
  color: var(--green);
  background: rgba(116, 226, 169, 0.11);
  font-size: 12px;
  font-weight: 900;
}

.control-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 12px;
}

.control-card {
  min-height: 186px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.07);
}

.control-card.wide {
  grid-column: 1 / -1;
}

.card-label {
  display: inline-flex;
  margin-bottom: 18px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.control-card h3 {
  margin-bottom: 8px;
  font-size: 22px;
}

.control-card p {
  margin-bottom: 18px;
  color: var(--soft);
  line-height: 1.65;
}

.path-bar,
.name-input {
  display: flex;
  align-items: center;
  min-height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.24);
}

.path-bar {
  gap: 10px;
  padding: 0 12px;
}

.path-bar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
}

.path-bar code {
  overflow: hidden;
  color: var(--soft);
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
}

.launch-button {
  min-height: 42px;
  padding: 0 16px;
  border: 0;
  border-radius: 12px;
  color: #061018;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  cursor: pointer;
  font-weight: 900;
}

.name-input {
  padding: 0 12px;
  color: var(--soft);
  font-size: 13px;
}

.diagnostics {
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.diagnostics div {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--soft);
  background: rgba(255, 255, 255, 0.05);
  font-size: 12px;
}

.diagnostics span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.diagnostics .ok {
  background: var(--green);
}

.diagnostics .warn {
  background: var(--yellow);
}

.section,
.split-section,
.dmg-section,
.safety-section,
.steps-section,
.download-section {
  padding: 86px 0;
}

.section-title {
  max-width: 720px;
  margin-bottom: 30px;
}

.section-title.compact {
  max-width: 540px;
  margin-bottom: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(32px, 4.8vw, 56px);
  line-height: 1.08;
}

.section-title p,
.dmg-copy p,
.safety-section p {
  line-height: 1.8;
}

.feature-title {
  font-size: clamp(64px, 11vw, 138px);
  line-height: 0.9;
  white-space: nowrap;
}

.feature-kicker {
  color: var(--soft);
  font-size: clamp(20px, 2.4vw, 34px);
  letter-spacing: 0;
  text-transform: none;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-card {
  min-height: 286px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(145deg, rgba(103, 183, 255, 0.08), transparent 45%),
    var(--panel);
}

.feature-index {
  display: inline-flex;
  margin-bottom: 58px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 950;
}

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.feature-card p {
  margin-bottom: 0;
  line-height: 1.75;
}

.feature-card p span,
.boundary-copy span {
  display: block;
}

.steps-section {
  border-top: 1px solid var(--line);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.steps-grid article {
  min-height: 150px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(145deg, rgba(94, 228, 211, 0.08), transparent 45%),
    var(--panel);
}

.steps-grid span {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  margin-bottom: 42px;
  border: 1px solid rgba(103, 183, 255, 0.34);
  border-radius: 12px;
  color: var(--cyan);
  background: rgba(103, 183, 255, 0.12);
  font-weight: 950;
}

.steps-grid strong {
  display: block;
  color: var(--text);
  font-size: 18px;
  line-height: 1.35;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(360px, 1fr);
  gap: 56px;
  align-items: center;
  border-top: 1px solid var(--line);
}

.route-panel {
  display: grid;
  gap: 12px;
}

.route-item {
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
}

.route-item.active {
  border-color: var(--line-strong);
  background: rgba(103, 183, 255, 0.12);
}

.route-item strong {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 13px;
  color: #061018;
  background: var(--text);
}

.route-item h3 {
  margin-bottom: 4px;
  font-size: 20px;
}

.route-item p {
  margin-bottom: 0;
}

.dmg-section {
  border-top: 1px solid var(--line);
}

.dmg-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(330px, 0.72fr);
  gap: 34px;
  align-items: center;
}

.dmg-window {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
}

.dmg-header {
  justify-content: space-between;
  height: 44px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  color: var(--soft);
  background: rgba(255, 255, 255, 0.06);
  font-size: 13px;
  font-weight: 800;
}

.dmg-header small {
  color: var(--muted);
}

.dmg-canvas {
  position: relative;
  display: grid;
  min-height: 360px;
  grid-template-columns: 1fr 120px 1fr;
  gap: 24px;
  align-items: center;
  padding: 42px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), transparent 40%),
    radial-gradient(circle at 50% 52%, rgba(94, 228, 211, 0.15), transparent 30%),
    rgba(6, 11, 17, 0.72);
}

.dmg-canvas p {
  position: absolute;
  right: 40px;
  bottom: 28px;
  left: 40px;
  margin: 0;
  color: var(--muted);
  text-align: center;
}

.install-icon {
  display: grid;
  justify-items: center;
  gap: 12px;
  color: var(--soft);
  font-weight: 900;
}

.app-icon img,
.folder-icon span {
  display: grid;
  width: 112px;
  height: 112px;
  place-items: center;
  border-radius: 26px;
  box-shadow: 0 22px 46px rgba(0, 0, 0, 0.34);
}

.app-icon img {
  object-fit: cover;
}

.folder-icon span {
  position: relative;
  background: linear-gradient(180deg, #80c7ff, #347fff);
}

.folder-icon span::before {
  position: absolute;
  top: 18px;
  left: 18px;
  width: 42px;
  height: 18px;
  border-radius: 8px 8px 4px 4px;
  background: #b7dcff;
  content: "";
}

.install-arrow {
  position: relative;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
}

.install-arrow::after {
  position: absolute;
  top: 50%;
  right: -2px;
  width: 16px;
  height: 16px;
  border-top: 2px solid var(--blue);
  border-right: 2px solid var(--blue);
  content: "";
  transform: translateY(-50%) rotate(45deg);
}

.dmg-copy {
  padding: 6px 0;
}

.dmg-copy h3 {
  margin-bottom: 14px;
  font-size: 28px;
}

.safety-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1fr);
  gap: 42px;
  align-items: center;
  margin-bottom: 56px;
  padding: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(94, 228, 211, 0.13), transparent 42%),
    rgba(255, 255, 255, 0.07);
  box-shadow: var(--shadow);
}

.safety-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.safety-grid div {
  min-height: 124px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(0, 0, 0, 0.18);
}

.safety-grid strong,
.safety-grid span {
  display: block;
}

.safety-grid strong {
  margin-bottom: 16px;
  color: var(--cyan);
  font-size: 25px;
}

.download-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 34px;
  padding: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(103, 183, 255, 0.15), transparent 44%),
    rgba(255, 255, 255, 0.07);
  box-shadow: var(--shadow);
}

.download-section h2 {
  margin-bottom: 10px;
  font-size: clamp(30px, 4vw, 48px);
}

.download-section p:not(.eyebrow) {
  max-width: 640px;
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.download-section .primary-button {
  flex: 0 0 auto;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 24px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.site-footer a {
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font-weight: 800;
}

.site-footer a:hover {
  color: var(--soft);
}

.policy-hero {
  padding: 88px 0 56px;
}

.policy-hero h1 {
  max-width: 900px;
  margin-bottom: 22px;
  font-size: clamp(48px, 8vw, 94px);
}

.policy-hero > p:not(.eyebrow) {
  max-width: 760px;
  color: var(--soft);
  font-size: 19px;
  line-height: 1.85;
}

.policy-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding: 0 0 72px;
}

.policy-toc {
  position: sticky;
  top: 118px;
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  backdrop-filter: blur(18px);
}

.policy-toc a {
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.policy-toc a:hover {
  color: var(--text);
  background: rgba(103, 183, 255, 0.12);
}

.policy-content {
  display: grid;
  gap: 14px;
}

.policy-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    linear-gradient(145deg, rgba(103, 183, 255, 0.07), transparent 44%),
    var(--panel);
}

.policy-card h2 {
  margin-bottom: 14px;
  font-size: clamp(24px, 3vw, 34px);
}

.policy-card p,
.policy-card li {
  color: var(--soft);
  line-height: 1.85;
}

.policy-card p:last-child {
  margin-bottom: 0;
}

.policy-card ul {
  margin: 0 0 18px;
  padding-left: 20px;
}

.policy-card a {
  color: var(--cyan);
  font-weight: 800;
}

@media (max-width: 980px) {
  .nav {
    flex-wrap: wrap;
    align-items: center;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
  }

  .hero,
  .split-section,
  .dmg-layout,
  .safety-section,
  .download-section {
    grid-template-columns: 1fr;
  }

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

  .hero {
    min-height: auto;
  }

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

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

  .section-title.compact {
    max-width: 720px;
  }

  .policy-layout {
    grid-template-columns: 1fr;
  }

  .policy-toc {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 22px, 1180px);
  }

  .nav {
    top: 8px;
    gap: 10px;
    margin-top: 8px;
    padding: 10px;
  }

  .brand {
    gap: 8px;
    font-size: 16px;
  }

  .brand-logo {
    width: 32px;
    height: 32px;
  }

  .nav-links {
    justify-content: space-between;
    gap: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--line);
    overflow-x: auto;
    white-space: nowrap;
    font-size: 13px;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-actions {
    display: flex;
    gap: 8px;
    margin-left: auto;
  }

  .nav-action,
  .download-action {
    min-height: 36px;
    padding: 0 10px;
    font-size: 13px;
  }

  .nav-action {
    display: none;
  }

  h1 {
    font-size: 46px;
  }

  h1 span:nth-child(2) {
    font-size: clamp(31px, 8.8vw, 42px);
  }

  .lead {
    font-size: 16px;
  }

  .hero-lead span {
    display: inline;
  }

  .feature-card p span,
  .boundary-copy span {
    display: inline;
  }

  .proof-row {
    align-items: stretch;
    flex-direction: column;
  }

  .app-window {
    grid-template-columns: 1fr;
  }

  .account-stage {
    width: 100%;
  }

  .account-panel {
    padding: 30px 18px 20px;
  }

  .account-card {
    grid-template-columns: 14px 52px minmax(0, 1fr);
  }

  .account-card em {
    grid-column: 3;
    width: max-content;
  }

  .wechat-icon,
  .custom-icon,
  .plus-box {
    width: 50px;
    height: 50px;
  }

  .account-footer {
    margin-top: 54px;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  }

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

  .control-grid,
  .feature-grid,
  .steps-grid,
  .safety-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid article {
    min-height: 112px;
  }

  .steps-grid span {
    margin-bottom: 24px;
  }

  .dmg-canvas {
    min-height: 470px;
    grid-template-columns: 1fr;
    justify-items: center;
    padding: 34px 24px 62px;
  }

  .install-arrow {
    width: 2px;
    height: 58px;
  }

  .install-arrow::after {
    top: auto;
    right: auto;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%) rotate(135deg);
  }

  .safety-section {
    padding: 28px;
  }

  .download-section {
    padding: 26px;
  }

  .policy-hero {
    padding: 54px 0 34px;
  }

  .policy-toc {
    grid-template-columns: 1fr;
  }

  .policy-card {
    padding: 22px;
  }
}