:root {
  color-scheme: light;
  --bg: #f4f7f5;
  --ink: #15201c;
  --muted: #5d6f68;
  --panel: #ffffff;
  --panel-strong: #e7efe9;
  --line: #d7e1dc;
  --green: #0f6f55;
  --green-dark: #084938;
  --amber: #d88a22;
  --blue: #215f82;
  --shadow: 0 24px 70px rgba(20, 39, 33, 0.14);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(244, 247, 245, 0.9);
  border-bottom: 1px solid rgba(215, 225, 220, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.08rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 650;
}

.main-nav a:hover,
.site-footer a:hover {
  color: var(--green);
}

.nav-cta,
.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-weight: 800;
  font-size: 0.95rem;
  line-height: 1;
}

.nav-cta {
  padding: 0 18px;
  color: #fff;
  background: var(--green-dark);
}

.section {
  padding: clamp(64px, 9vw, 112px) clamp(20px, 5vw, 72px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: clamp(34px, 7vw, 92px);
  min-height: calc(100vh - 77px);
  padding-top: clamp(52px, 7vw, 82px);
  background:
    linear-gradient(115deg, rgba(15, 111, 85, 0.12), transparent 34%),
    linear-gradient(180deg, #f8faf8 0%, var(--bg) 82%);
}

.hero h1,
.section-heading h2,
.security h2,
.access h2 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(2.6rem, 6vw, 5.8rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero p {
  max-width: 690px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(1.04rem, 1.6vw, 1.28rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  border: 0;
  padding: 0 22px;
  cursor: pointer;
}

.button.primary {
  color: #fff;
  background: var(--green);
  box-shadow: 0 12px 26px rgba(15, 111, 85, 0.24);
}

.button.secondary {
  color: var(--green-dark);
  background: #fff;
  border: 1px solid var(--line);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 760px;
  margin: 44px 0 0;
}

.hero-facts div {
  padding: 16px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.hero-facts dt {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-facts dd {
  margin: 8px 0 0;
  font-weight: 850;
}

.hero-visual {
  position: relative;
  min-height: 620px;
  display: grid;
  place-items: center;
}

.signal-grid {
  position: absolute;
  width: min(620px, 118%);
  opacity: 0.92;
}

.app-preview {
  position: relative;
  width: min(430px, 86vw);
  filter: drop-shadow(var(--shadow));
}

.feature-band {
  background: #fff;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.7fr);
  gap: clamp(24px, 5vw, 80px);
  align-items: end;
  margin-bottom: 42px;
}

.section-heading.compact {
  max-width: 900px;
  display: block;
}

.section-heading h2,
.security h2,
.access h2 {
  font-size: clamp(2rem, 4vw, 3.9rem);
  line-height: 1.04;
}

.section-heading p,
.security p,
.access p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.section-heading.compact p {
  max-width: 740px;
  margin-top: 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-card,
.plan-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.feature-card {
  padding: 24px;
}

.feature-icon {
  display: inline-grid;
  width: 46px;
  height: 46px;
  place-items: center;
  color: #fff;
  background: var(--green-dark);
  border-radius: 50%;
  font-size: 0.78rem;
  font-weight: 900;
}

.feature-card h3,
.plan-card h3 {
  margin: 18px 0 10px;
  font-size: 1.2rem;
}

.feature-card p,
.plan-card li {
  color: var(--muted);
  line-height: 1.58;
}

.feature-card p,
.plan-card ul {
  margin: 0;
}

.roadmap {
  background: var(--panel-strong);
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 38px;
}

.plan-card {
  padding: 24px;
}

.plan-card.highlighted {
  border-color: rgba(216, 138, 34, 0.65);
  box-shadow: 0 18px 42px rgba(96, 68, 28, 0.12);
}

.plan-price {
  min-height: 44px;
  margin: 0 0 18px;
  color: var(--green-dark);
  font-weight: 850;
}

.plan-card ul {
  padding-left: 18px;
}

.plan-card li + li {
  margin-top: 10px;
}

.security {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 0.62fr);
  gap: clamp(30px, 6vw, 92px);
  background: #10221c;
  color: #f7fbf8;
}

.security p {
  max-width: 790px;
  margin-top: 24px;
  color: #b9ccc4;
}

.security-list {
  display: grid;
  gap: 14px;
}

.security-list div {
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.security-list strong,
.security-list span {
  display: block;
}

.security-list strong {
  margin-bottom: 8px;
}

.security-list span {
  color: #bdd1ca;
  line-height: 1.56;
}

.access {
  background: #fff;
}

.access-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(300px, 0.5fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: start;
  padding: clamp(26px, 5vw, 54px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(140deg, rgba(15, 111, 85, 0.09), transparent 52%),
    #f8fbf9;
}

.access p {
  max-width: 720px;
  margin-top: 18px;
}

.access-form {
  display: grid;
  gap: 10px;
}

.access-form label {
  color: var(--green-dark);
  font-size: 0.86rem;
  font-weight: 850;
}

.access-form input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
  background: #fff;
}

.access-form button {
  margin-top: 8px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer div {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-links {
  justify-content: flex-end;
}

.site-footer strong {
  color: var(--ink);
}

.admin-page {
  background: #eef3f0;
}

.admin-locked .main-nav,
.admin-locked .admin-dashboard,
.admin-locked .admin-workspace,
.admin-locked .admin-actions {
  display: none;
}

.admin-locked .admin-hero {
  min-height: calc(100vh - 98px);
  align-items: center;
}

.admin-header .nav-cta.muted {
  color: var(--green-dark);
  background: #fff;
  border: 1px solid var(--line);
}

.admin-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(260px, 0.35fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: end;
  padding-bottom: 40px;
  background: #fff;
}

.admin-kicker {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.admin-hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  line-height: 1;
  letter-spacing: 0;
}

.admin-hero p {
  max-width: 780px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.admin-status,
.admin-stat-card,
.admin-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.admin-status {
  padding: 22px;
  box-shadow: 0 16px 42px rgba(20, 39, 33, 0.08);
}

.admin-login {
  display: grid;
  gap: 10px;
}

.admin-login label,
.admin-edit-form label {
  display: grid;
  gap: 7px;
  color: var(--green-dark);
  font-size: 0.84rem;
  font-weight: 850;
}

.admin-login input,
.admin-edit-form input,
.admin-edit-form select,
.admin-filter-row select,
.admin-notes {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  font: inherit;
  background: #fff;
}

.admin-edit-form input[readonly] {
  color: var(--muted);
  background: #f5f8f6;
}

.admin-notes {
  min-height: 142px;
  padding: 12px;
  line-height: 1.5;
  resize: vertical;
}

.admin-login-actions,
.admin-form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.admin-status span,
.admin-stat-card span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 850;
  text-transform: uppercase;
}

.admin-status strong,
.admin-stat-card strong {
  display: block;
  margin-top: 8px;
  font-size: 2rem;
}

.admin-status small,
.admin-stat-card small {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.5;
}

.admin-status small[data-tone="ok"],
.admin-message[data-tone="ok"] {
  color: var(--green);
}

.admin-status small[data-tone="pending"],
.admin-message[data-tone="pending"] {
  color: var(--blue);
}

.admin-status small[data-tone="error"],
.admin-message[data-tone="error"] {
  color: #a63d2a;
}

.admin-dashboard,
.admin-workspace,
.admin-actions {
  padding-top: 32px;
}

.admin-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.admin-stat-card,
.admin-panel {
  padding: 22px;
}

.admin-panel + .admin-panel {
  margin-top: 16px;
}

.admin-panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}

.admin-panel-heading h2 {
  margin: 0;
  font-size: clamp(1.45rem, 2.5vw, 2.1rem);
}

.admin-panel-heading p {
  max-width: 720px;
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.admin-plan-list {
  display: grid;
  gap: 14px;
}

.admin-plan-row {
  display: grid;
  grid-template-columns: minmax(110px, 0.22fr) minmax(140px, 1fr) 44px;
  gap: 14px;
  align-items: center;
}

.admin-plan-row span,
.admin-plan-row strong {
  font-weight: 850;
}

.admin-plan-row meter {
  width: 100%;
  height: 16px;
}

.admin-search {
  display: grid;
  gap: 14px;
}

.admin-search label,
.admin-filter-row label {
  color: var(--green-dark);
  font-size: 0.86rem;
  font-weight: 850;
}

.admin-search div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.admin-search input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
  background: #fff;
}

.admin-filter-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(160px, 220px)) auto;
  gap: 10px;
  align-items: end;
}

.admin-filter-row label {
  display: grid;
  gap: 7px;
}

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

.admin-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.admin-table th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.admin-table td {
  color: var(--ink);
}

.admin-table tr.selected td {
  background: #f3faf6;
}

.device-usage {
  display: grid;
  gap: 6px;
  min-width: 116px;
}

.device-usage span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.device-usage span strong {
  color: var(--ink);
}

.device-bar {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #dfe8e3;
}

.device-bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
}

.device-usage[data-tone="warn"] .device-bar i {
  background: var(--amber);
}

.device-usage[data-tone="danger"] .device-bar i {
  background: #a63d2a;
}

.status-pill {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 850;
}

.status-pill.active {
  color: #07513d;
  background: #dff3e8;
}

.status-pill.trial {
  color: #76500f;
  background: #fff0d8;
}

.status-pill.paused {
  color: #22506b;
  background: #deeff7;
}

.status-pill.suspended,
.status-pill.expired {
  color: #843522;
  background: #ffe2d9;
}

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

.admin-form-actions {
  grid-column: 1 / -1;
}

.admin-message {
  min-height: 24px;
  margin-top: 16px;
  color: var(--muted);
  font-weight: 800;
}

.admin-empty {
  margin: 0;
  color: var(--muted);
}

.table-action {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--green-dark);
  font: inherit;
  font-weight: 850;
  background: #fff;
  cursor: pointer;
}

.table-action:hover {
  border-color: rgba(15, 111, 85, 0.42);
  background: #f2faf6;
}

.admin-action-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.admin-action-grid .button:disabled {
  cursor: not-allowed;
  opacity: 0.66;
}

.admin-ops-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.72fr) minmax(260px, 0.78fr);
  gap: 14px;
}

.admin-ops-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdfb;
}

.admin-ops-card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.admin-ops-card h3 {
  margin: 0;
  font-size: 1rem;
}

.device-detail,
.device-detail-summary {
  display: grid;
  gap: 12px;
}

.device-detail-summary small,
.device-chip small {
  color: var(--muted);
  line-height: 1.45;
}

.device-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.device-chip {
  display: grid;
  gap: 3px;
  max-width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.device-chip strong {
  font-size: 0.9rem;
}

.admin-history {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.55;
}

.admin-history li + li {
  margin-top: 8px;
}

@media (max-width: 980px) {
  .main-nav {
    display: none;
  }

  .hero,
  .section-heading,
  .security,
  .access-panel,
  .admin-hero {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
  }

  .hero-visual {
    min-height: 520px;
  }

  .feature-grid,
  .plan-grid,
  .admin-stat-grid,
  .admin-edit-form,
  .admin-action-grid,
  .admin-ops-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 12px 16px;
  }

  .nav-cta {
    display: none;
  }

  .section {
    padding: 56px 18px;
  }

  .hero h1 {
    font-size: 2.45rem;
  }

  .hero-facts,
  .feature-grid,
  .plan-grid,
  .admin-stat-grid,
  .admin-edit-form,
  .admin-action-grid {
    grid-template-columns: 1fr;
  }

  .admin-search div,
  .admin-plan-row,
  .admin-filter-row,
  .admin-ops-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 430px;
  }

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

  .footer-links {
    justify-content: flex-start;
  }
}