/* Art direction: paranoia messenger → dark, austere, militant
   Palette: near-black + blood red accent
   Typography: Cabinet Grotesk (display) + Satoshi (body) — geometric authority
   Density: balanced, slightly dense */

:root, [data-theme="dark"] {
  --color-bg:           #08070A;
  --color-surface:      #12080C;
  --color-surface-2:    #10080B;
  --color-bg-dark:      #020103;
  --color-separator:    #251015;
  --color-border:       #3A1118;

  --color-text:         #F7E8EA;
  --color-text-muted:   #aa636c;
  --color-text-hint:    #56323A;

  --color-accent:       #C91122;
  --color-accent-hover: #FF2738;
  --color-accent-dark:  #650710;
  --color-accent-dim:   #4A060C;
  --color-error:        #FF2738;

  --radius-sm:  3px;
  --radius-md:  10px;

  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Consolas', monospace;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --nav-height: 64px;
}

[data-theme="light"] {
  --color-bg:           #F2E8DF;
  --color-surface:      #E6D3C6;
  --color-surface-2:    #EAD9CE;
  --color-separator:    #D4C0B2;
  --color-border:       #C2A898;
  --color-text:         #231209;
  --color-text-muted:   #7A4A38;
  --color-text-hint:    #B08570;
  --color-accent:       #C91122;
  --color-accent-hover: #FF2738;
  --color-accent-dark:  #7D4535;
  --color-accent-dim:   #E8CCC8;
  --color-bg-dark:      #D8C8BB;
}

/* ── Reset & Base ─────────────────────────────────────────── */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-hover);
}

code, pre {
  font-family: var(--font-mono);
}

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

/* ── Layout ───────────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--color-text);
  margin-bottom: 48px;
}

/* ── Navigation ───────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(8, 7, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-separator);
  transition: background var(--transition);
}

[data-theme="light"] .nav {
  background: rgba(242, 232, 223, 0.88);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  text-decoration: none;
}

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

.nav-logo-img {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav-logo-text {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-github {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-github:hover {
  color: var(--color-accent);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
}

.hamburger {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  width: 36px;
  height: 36px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: border-color var(--transition);
}

.hamburger:hover {
  border-color: var(--color-accent);
}

.hamburger span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--color-text-muted);
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-separator);
  padding: 24px;
  z-index: 99;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-menu ul li {
  border-bottom: 1px solid var(--color-separator);
}

.mobile-menu ul a {
  display: block;
  padding: 16px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.mobile-menu ul a:hover {
  color: var(--color-text);
}

/* ── Hero ─────────────────────────────────────────────────── */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

.hero-watermark {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 520px;
  height: 520px;
  opacity: 0.04;
  pointer-events: none;
  user-select: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  padding: 80px 0;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(3.5rem, 8vw, 6.5rem);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  line-height: 1.3;
}

.hero-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 540px;
}

.hero-desc strong {
  color: var(--color-text);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent-dark);
  color: var(--color-text);
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent);
  color: var(--color-text);
  border-color: var(--color-accent-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* ── Threat Model ─────────────────────────────────────────── */

.threat {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-separator);
  border-bottom: 1px solid var(--color-separator);
}

.threat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--color-separator);
  border: 1px solid var(--color-separator);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 48px;
}

.threat-card {
  background: var(--color-surface);
  padding: 28px 32px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.threat-card:hover {
  background: var(--color-surface-2);
}

.threat-card-icon {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.threat-card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.threat-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.disclaimer {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
}

.disclaimer-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-hint);
  margin-bottom: 16px;
}

.disclaimer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.disclaimer-list li {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-left: 20px;
  position: relative;
  line-height: 1.5;
}

.disclaimer-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-hint);
}

/* ── Protocol ─────────────────────────────────────────────── */

.protocol-blocks {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--color-separator);
  border: 1px solid var(--color-separator);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.protocol-block {
  background: var(--color-surface);
  padding: 36px 40px;
  position: relative;
}

.protocol-block::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-accent-dim);
  transition: background var(--transition);
}

.protocol-block:hover::before {
  background: var(--color-accent);
}

.protocol-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.protocol-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.protocol-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.protocol-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.protocol-steps li {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-left: 20px;
  position: relative;
}

.protocol-steps li::before {
  content: counter(step) '.';
  counter-increment: step;
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.protocol-steps {
  counter-reset: step;
}

.protocol-steps li strong {
  color: var(--color-text);
  font-weight: 500;
}

.protocol-note {
  margin-top: 12px;
  font-size: 0.875rem;
  color: var(--color-text-hint);
  font-style: italic;
}

/* ── Features ─────────────────────────────────────────────── */

.features {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-separator);
  border-bottom: 1px solid var(--color-separator);
}

.features-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.features-table th {
  background: var(--color-surface);
  padding: 14px 20px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-hint);
  border-bottom: 1px solid var(--color-border);
}

.features-table td {
  padding: 16px 20px;
  vertical-align: top;
  border-bottom: 1px solid var(--color-separator);
}

.features-table tr:last-child td {
  border-bottom: none;
}

.features-table tr:hover td {
  background: var(--color-surface-2);
}

.feat-name {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.9rem;
  white-space: nowrap;
  width: 220px;
}

.feat-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  line-height: 1.5;
}

/* ── Download ─────────────────────────────────────────────── */

.download-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 32px;
}

.download-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.download-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-dim), 0 4px 20px rgba(201, 17, 34, 0.08);
}

.download-card.recommended {
  border-color: var(--color-accent);
  position: relative;
}

.download-card.recommended::after {
  content: 'Ваша платформа';
  position: absolute;
  top: -1px;
  right: 16px;
  background: var(--color-accent);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.download-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.platform-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.platform-icon svg {
  width: 100%;
  height: 100%;
}

.platform-icon-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: invert(1) opacity(0.45);
}

[data-theme="light"] .platform-icon-img {
  filter: invert(0) opacity(0.55);
}

.platform-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}

.platform-version {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-hint);
  margin-top: 2px;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  background: var(--color-accent-dark);
  color: var(--color-text);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition);
  width: 100%;
  justify-content: center;
}

.btn-download:hover {
  background: var(--color-accent);
  color: var(--color-text);
  border-color: var(--color-accent-hover);
}

.btn-download svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.file-hash {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-hint);
  line-height: 1.4;
  word-break: break-all;
}

.file-hash-label {
  color: var(--color-text-hint);
  margin-right: 4px;
}

.download-note {
  font-size: 0.875rem;
  color: var(--color-text-hint);
  padding: 16px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-separator);
  border-radius: var(--radius-sm);
}

/* «Скоро» карточки */
.download-card--soon {
  opacity: 0.55;
  pointer-events: none;
}

.download-card--soon:hover {
  border-color: var(--color-border);
  box-shadow: none;
}

.btn-download--disabled {
  background: var(--color-surface-2);
  border-color: var(--color-border);
  color: var(--color-text-hint);
  cursor: default;
  font-style: italic;
  letter-spacing: 0.05em;
}

/* Серверные бинарники в self-hosted */
.selfhosted-server-bins {
  margin-top: 32px;
}

.selfhosted-bins-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-hint);
  margin-bottom: 10px;
}

.server-bin-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.server-bin-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 8px 12px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-separator);
  border-radius: var(--radius-sm);
  transition: color var(--transition), border-color var(--transition);
}

.server-bin-link:hover {
  color: var(--color-text);
  border-color: var(--color-border);
}

.server-bin-link svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  opacity: 0.6;
}

.bin-arch {
  margin-left: auto;
  font-size: 0.68rem;
  color: var(--color-text-hint);
  letter-spacing: 0.08em;
}

.bin-sha {
  display: block;
  font-size: 0.62rem;
  color: var(--color-text-hint);
  word-break: break-all;
  line-height: 1.4;
  margin-top: 4px;
  padding-left: 21px;
}

/* ── Self-hosted ──────────────────────────────────────────── */

.selfhosted {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-separator);
  border-bottom: 1px solid var(--color-separator);
}

.selfhosted-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.selfhosted-intro {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 8px;
}

.selfhosted-intro strong {
  color: var(--color-text);
  font-weight: 600;
}

.selfhosted-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 24px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-separator);
  transition: background var(--transition);
}

.step-item:last-child {
  border-bottom: none;
}

.step-item:hover {
  background: var(--color-surface-2);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-accent-dark);
  border-radius: var(--radius-sm);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: 500;
}

.step-content-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.step-content-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.selfhosted-cta {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.selfhosted-screenshot {
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.screenshot-img {
  display: block;
  max-width: 100%;
  width: 320px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 0 0 1px var(--color-accent-dim);
}

/* ── Footer ───────────────────────────────────────────────── */

footer {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-separator);
  padding: 48px 0 32px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-brand-img {
  width: 24px;
  height: 24px;
}

.footer-brand-text {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  max-width: 300px;
}

.footer-nav-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-hint);
  margin-bottom: 14px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-separator);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-license {
  font-size: 0.8rem;
  color: var(--color-text-hint);
}

.footer-license a {
  color: var(--color-text-hint);
}

.footer-license a:hover {
  color: var(--color-accent);
}

/* ── Scroll Reveal ────────────────────────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 400ms ease, transform 400ms ease;
}

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

/* ── Responsive ───────────────────────────────────────────── */

@media (min-width: 768px) {
  .threat-grid {
    grid-template-columns: 1fr 1fr;
  }

  .protocol-blocks {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1px;
  }

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

  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
  }

  .selfhosted-layout {
    grid-template-columns: 1fr auto;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .download-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-watermark {
    width: 640px;
    height: 640px;
    right: -80px;
  }
}

@media (min-width: 1280px) {
  .download-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 767px) {
  .nav-links {
    display: none;
  }

  .nav-github {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-watermark {
    width: 300px;
    height: 300px;
    right: -40px;
    opacity: 0.025;
  }

  .features-table {
    display: block;
    overflow-x: auto;
  }

  .protocol-block {
    padding: 24px 20px;
  }

  .threat-card {
    padding: 20px 24px;
  }

  section {
    padding: 72px 0;
  }
}

/* ── Reduced motion ───────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

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