:root {
  --ink: #f7fbff;
  --muted: #aebbd2;
  --subtle: #7f8da9;
  --page: #06152e;
  --panel: #0a2145;
  --panel-2: #0d2a58;
  --line: rgba(180, 205, 255, 0.18);
  --yellow: #ffd735;
  --yellow-2: #ffbf19;
  --orange: #ff7a18;
  --green: #65db6f;
  --white: #ffffff;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(255, 122, 24, 0.08), transparent 28%),
    linear-gradient(180deg, rgba(5, 28, 66, 0.98), rgba(2, 10, 24, 0.98));
  font-family: "Inter", Arial, Helvetica, sans-serif;
  letter-spacing: 0;
}

button,
a {
  font: inherit;
}

button {
  cursor: pointer;
}

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

img {
  display: block;
  max-width: 100%;
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(100%, 1512px);
  margin: 0 auto;
  padding: 18px 28px 88px;
}

.topbar {
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  gap: 28px;
  align-items: center;
  min-height: 62px;
  padding: 0 8px 16px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: 184px;
  min-width: 184px;
  color: var(--white);
  font-size: 26px;
  font-weight: 900;
  line-height: 1;
  white-space: nowrap;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand b {
  color: var(--orange);
  font-weight: 900;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 38px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  color: var(--ink);
  white-space: nowrap;
}

.status-pill span {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(101, 219, 111, 0.14);
}

.status-pill strong,
.topbar-copy,
.install-primary,
.platform-option strong,
.install-card h2,
.safe-panel h2,
.notify-panel h2,
.faq-panel h2 {
  letter-spacing: 0;
}

.topbar-copy {
  margin: 0;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
}

.install-primary,
.card-action,
.modal-guide {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 48px;
  border: 0;
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--yellow), var(--yellow-2));
  color: #071126;
  font-weight: 900;
  box-shadow: 0 10px 22px rgba(255, 201, 31, 0.2);
}

.install-primary {
  min-width: 220px;
  padding: 0 24px;
  font-size: 18px;
}

.console-grid {
  display: grid;
  grid-template-columns: 340px minmax(380px, 1fr) 540px;
  gap: 12px;
  margin-top: 12px;
}

.panel,
.install-card,
.notify-panel,
.faq-panel,
.safe-panel,
.app-modal {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(9, 31, 67, 0.88);
  box-shadow: var(--shadow);
}

.panel {
  padding: 20px;
}

.platform-panel h1,
.steps-panel h2,
.preview-panel h2,
.install-card h2,
.notify-panel h2,
.faq-panel h2,
.safe-panel h2,
.app-modal h2 {
  margin: 0;
  color: var(--ink);
}

.platform-panel h1,
.steps-panel h2,
.preview-panel h2 {
  font-size: 22px;
  line-height: 1.2;
}

.platform-options {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.platform-option {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  width: 100%;
  min-height: 68px;
  padding: 11px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink);
  text-align: left;
}

.platform-option.is-active {
  border-color: var(--yellow);
  background: rgba(255, 215, 53, 0.08);
  color: var(--yellow);
  box-shadow: inset 0 0 0 1px rgba(255, 215, 53, 0.25);
}

.platform-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #173a77;
  color: var(--white);
  font-size: 22px;
}

.platform-icon.android {
  background: #ffd735;
  color: #071126;
}

.platform-icon.ios,
.platform-icon.desktop {
  background: #214886;
}

.trust-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
  margin-top: 24px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
}

.trust-note > i,
.safe-panel > i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: #9fe678;
  color: #071b45;
  font-size: 24px;
}

.trust-note strong {
  display: block;
  margin-bottom: 4px;
}

.trust-note p,
.notify-panel p,
.safe-panel p,
.faq-list p,
.modal-copy,
.app-modal p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.section-heading p {
  margin: 0 0 8px;
  color: var(--yellow);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.step-list {
  position: relative;
  display: grid;
  gap: 0;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.step-list::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 34px;
  bottom: 34px;
  width: 1px;
  background: var(--line);
}

.step-item {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 14px;
  align-items: start;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.step-item:last-child {
  border-bottom: 0;
}

.step-number {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-top: 2px;
  border-radius: 50%;
  background: #8aa1c5;
  color: var(--white);
  font-size: 13px;
  font-weight: 900;
}

.step-item.is-current {
  margin: 0 -12px;
  padding: 10px 12px;
  border: 1px solid var(--yellow);
  border-radius: var(--radius);
  background: rgba(255, 215, 53, 0.06);
}

.step-item.is-current .step-number {
  background: var(--yellow);
  color: #071126;
}

.step-item.is-final .step-number {
  background: var(--green);
  color: #071126;
}

.step-copy strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
  font-size: 16px;
}

.step-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.step-badge {
  align-self: center;
  padding: 7px 12px;
  border: 1px solid rgba(255, 215, 53, 0.45);
  border-radius: var(--radius);
  color: var(--yellow);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.step-item.is-final .step-badge {
  border-color: rgba(101, 219, 111, 0.45);
  color: var(--green);
}

.preview-panel {
  overflow: hidden;
}

.preview-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}

.preview-head span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.preview-head i {
  color: var(--green);
  font-size: 10px;
}

.device-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 284px;
  margin: 6px 0 10px;
  overflow: hidden;
}

.device-preview img {
  width: min(100%, 360px);
  filter: drop-shadow(0 22px 34px rgba(0, 0, 0, 0.44));
}

.preview-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.preview-chip i {
  color: var(--yellow);
}

.platform-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.install-card {
  padding: 18px;
}

.install-card header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.install-card header > i {
  color: var(--green);
  font-size: 22px;
}

.install-card header h2 {
  flex: 1;
  font-size: 20px;
}

.install-card header span {
  padding: 6px 10px;
  border: 1px solid rgba(101, 219, 111, 0.42);
  border-radius: var(--radius);
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
}

.mini-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin: 18px 0 16px;
}

.mini-flow div {
  display: grid;
  justify-items: center;
  gap: 8px;
  min-width: 0;
  color: var(--ink);
  text-align: center;
}

.mini-flow i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  background: #183d79;
  color: var(--white);
  font-size: 18px;
}

.mini-flow div:last-child i {
  border-color: var(--green);
  color: var(--green);
}

.mini-flow strong {
  font-size: 13px;
}

.mini-flow small {
  min-height: 34px;
  color: var(--ink);
  font-size: 12px;
  line-height: 1.25;
}

.card-action {
  width: 100%;
  min-height: 46px;
  font-size: 17px;
}

.support-grid {
  display: grid;
  grid-template-columns: 1.05fr 1.35fr 0.65fr;
  gap: 12px;
  margin-top: 12px;
}

.notify-panel,
.faq-panel,
.safe-panel {
  padding: 22px;
}

.notify-panel {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
}

.notice-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(255, 122, 24, 0.28);
  color: var(--yellow);
  font-size: 24px;
}

.notify-panel button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  min-height: 38px;
  padding: 0 22px;
  border: 0;
  border-radius: var(--radius);
  background: #f5f8ff;
  color: #09204a;
  font-weight: 800;
}

.faq-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 14px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.025);
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 46px;
  padding: 0 14px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.faq-list summary::after {
  content: "\f078";
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  color: var(--muted);
  font-size: 12px;
}

.faq-list details[open] summary::after {
  content: "\f077";
}

.faq-list p {
  padding: 0 14px 14px;
}

.safe-panel {
  display: grid;
  align-content: start;
  gap: 10px;
}

.safe-panel .safe-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  width: fit-content;
  padding: 0 14px;
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--yellow);
  font-weight: 800;
}

.mobile-actionbar {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 20;
  display: none;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(5, 19, 43, 0.94);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(16px);
}

.mobile-actionbar button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  border: 0;
  border-radius: var(--radius);
  background: #132f61;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.mobile-actionbar button:first-child {
  background: var(--yellow);
  color: #071126;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.66);
}

.modal-backdrop[hidden] {
  display: none;
}

.app-modal {
  position: relative;
  width: min(100%, 430px);
  padding: 28px;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
}

.modal-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 18px;
  border-radius: var(--radius);
  background: var(--yellow);
  color: #071126;
  font-size: 24px;
}

.app-modal h2 {
  margin-bottom: 10px;
  font-size: 24px;
}

.modal-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 22px;
}

.install-page {
  min-height: 100vh;
}

.install-hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(280px, 430px) 1fr;
  gap: 36px;
  align-items: center;
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: 42px 24px 80px;
}

.install-hero .brand {
  margin-bottom: 28px;
}

.install-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.02;
}

.install-hero p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.install-steps {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.install-steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  list-style: none;
}

.install-steps span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--yellow);
  color: #071126;
  font-weight: 900;
}

.install-visual {
  display: grid;
  gap: 18px;
  justify-items: center;
}

.install-visual img {
  max-height: 640px;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.install-page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.install-page-actions a,
.install-page-actions button,
.install-page-actions .install-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-weight: 900;
}

.install-page-actions .install-status {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--yellow);
}

.install-page-actions a:first-child,
.install-page-actions button {
  border: 0;
  background: var(--yellow);
  color: #071126;
}

.install-page-actions a:last-child {
  border: 1px solid var(--line);
  color: var(--ink);
}

.install-message {
  min-height: 24px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(255, 215, 53, 0.7);
  outline-offset: 3px;
}

@media (max-width: 1240px) {
  .console-grid {
    grid-template-columns: 300px 1fr;
  }

  .preview-panel {
    grid-column: 1 / -1;
    min-height: auto;
  }

  .device-preview {
    min-height: 260px;
  }

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

  .safe-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 900px) {
  .app-shell {
    padding: 16px 16px 96px;
  }

  .topbar {
    grid-template-columns: 1fr auto;
    gap: 12px;
  }

  .brand {
    width: 156px;
    min-width: 156px;
    font-size: 21px;
  }

  .brand img {
    width: 34px;
    height: 34px;
  }

  .status-pill,
  .topbar-copy {
    display: none;
  }

  .install-primary {
    min-width: 0;
    padding: 0 14px;
    font-size: 0;
  }

  .install-primary i {
    font-size: 18px;
  }

  .console-grid,
  .platform-cards,
  .support-grid,
  .install-hero {
    grid-template-columns: 1fr;
  }

  .panel {
    min-height: auto;
    padding: 18px;
  }

  .preview-panel {
    order: -1;
  }

  .device-preview {
    min-height: 190px;
  }

  .device-preview img {
    width: min(100%, 320px);
  }

  .mini-flow {
    grid-template-columns: repeat(5, minmax(54px, 1fr));
    overflow-x: auto;
    padding-bottom: 4px;
  }

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

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

  .mobile-actionbar {
    display: grid;
  }

  .install-hero {
    padding-bottom: 100px;
  }
}

@media (max-width: 560px) {
  .platform-option {
    min-height: 64px;
  }

  .step-item {
    grid-template-columns: 36px 1fr;
  }

  .step-badge {
    grid-column: 2;
    width: fit-content;
  }

  .step-list::before {
    left: 17px;
  }

  .modal-actions {
    grid-template-columns: 1fr;
  }

  .install-card,
  .notify-panel,
  .faq-panel,
  .safe-panel {
    padding: 18px;
  }

  .mobile-actionbar button {
    gap: 5px;
    font-size: 12px;
  }
}