/* reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }

/* tokens */
/* Instrument Serif + Hanken Grotesk — editorial precision meets functional clarity */
:root {
  /* colours: electric cyan on cool white, slate neutrals */
  --c-bg:           #f8f9fb;
  --c-surface:      #ffffff;
  --c-surface-2:    #eef1f5;
  --c-border:       #dce1e9;
  --c-text:         #1a1f2e;
  --c-text-2:       #4a5568;
  --c-text-3:       #7a8799;
  --c-accent:       #00b8d9;
  --c-accent-dark:  #0090ad;
  --c-accent-light: #e0f7fc;
  --c-dark:         #0f1724;
  --c-dark-2:       #1a2638;
  --c-dark-3:       #243044;

  /* typography */
  --font-serif:  'Instrument Serif', Georgia, serif;
  --font-sans:   'Hanken Grotesk', system-ui, sans-serif;
  --font-mono:   'JetBrains Mono', 'Fira Code', monospace;

  /* spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* layout */
  --max-w:      1120px;
  --max-w-text: 680px;
  --col-gap:    var(--space-8);

  /* header */
  --header-h: 68px;

  /* logo */
  --logo-w: 180px;
  --logo-h: 44px;

  /* radius */
  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   14px;
  --r-full: 9999px;

  /* shadow */
  --sh-sm: 0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.05);
  --sh-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.05);
  --sh-lg: 0 8px 28px rgba(0,0,0,.10), 0 3px 8px rgba(0,0,0,.06);

  /* transitions */
  --tr-fast:   0.15s ease;
  --tr-base:   0.25s ease;
  --tr-slow:   0.4s ease;

  /* z-index */
  --z-base:       1;
  --z-card:       2;
  --z-header:     100;
  --z-mobile:     200;
  --z-cookie:     300;
  --z-back-to-top:150;
}

/* base */
body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 4vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 2.5vw, 2.25rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p { max-width: 65ch; }

strong { font-weight: 600; }

/* layout */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

main {
  padding-top: var(--header-h);
  min-height: 80vh;
}

.section { padding: var(--space-20) 0; }
.section--sm { padding: var(--space-12) 0; }
.section--lg { padding: var(--space-24) 0; }
.section--dark { background: var(--c-dark); color: #fff; }
.section--surface { background: var(--c-surface); }
.section--surface-2 { background: var(--c-surface-2); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--col-gap); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--col-gap); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--col-gap); }

/* header */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  z-index: var(--z-header);
  overflow: hidden;
}

.nav-inner {
  display: flex;
  align-items: center;
  height: var(--header-h);
  gap: var(--space-6);
}

.r27g7-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.r27g7-logo img {
  max-width: var(--logo-w);
  max-height: var(--logo-h);
  width: auto;
  height: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-text-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--r-sm);
  transition: color var(--tr-fast), background var(--tr-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--c-text);
  background: var(--c-surface-2);
}

.nav-links a.active {
  color: var(--c-accent-dark);
  font-weight: 600;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  margin-left: auto;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform var(--tr-base), opacity var(--tr-fast);
}

/* mobile menu */
.mobile-menu {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0; bottom: 0;
  background: var(--c-surface);
  z-index: var(--z-mobile);
  padding: var(--space-8) var(--space-6);
  gap: var(--space-2);
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0s linear 0.2s;
}

.mobile-menu.open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0s linear 0s;
}

.mobile-menu a {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--c-text);
  padding: var(--space-4) var(--space-2);
  border-bottom: 1px solid var(--c-border);
}

.mobile-menu a:hover { color: var(--c-accent-dark); }

/* breadcrumb */
.breadcrumb {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: var(--space-8);
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8rem;
  color: var(--c-text-3);
}

.breadcrumb li:not(:last-child)::after {
  content: '›';
  color: var(--c-border);
}

.breadcrumb a {
  color: var(--c-text-3);
  transition: color var(--tr-fast);
}

.breadcrumb a:hover { color: var(--c-accent-dark); }
.breadcrumb li:last-child { color: var(--c-text-2); }

/* reading progress */
#reading-progress {
  position: fixed;
  top: var(--header-h);
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--c-accent);
  z-index: var(--z-header);
  transition: width 0.1s linear;
}

/* hero typography */
.hero-type {
  background: var(--c-dark);
  color: #fff;
  padding: var(--space-20) 0 var(--space-24);
  position: relative;
  overflow: hidden;
}

.hero-type::before {
  content: '';
  position: absolute;
  top: -40px; right: -80px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,184,217,.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: var(--space-5);
}

.hero-type h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 14ch;
  margin-bottom: var(--space-6);
}

.hero-type .hero-sub {
  font-size: 1.125rem;
  color: rgba(255,255,255,.65);
  max-width: 52ch;
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.hero-type .hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: 0.8rem;
  color: rgba(255,255,255,.45);
}

.hero-type .hero-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* signal strip (homepage unique component) */
.signal-strip {
  background: var(--c-dark-2);
  border-bottom: 1px solid rgba(255,255,255,.07);
  overflow: hidden;
}

.signal-strip__inner {
  display: flex;
  gap: var(--space-8);
  padding: var(--space-5) 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.signal-strip__inner::-webkit-scrollbar { display: none; }

.signal-item {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.8125rem;
  color: rgba(255,255,255,.5);
  white-space: nowrap;
}

.signal-item__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  flex-shrink: 0;
}

.signal-item__dot.dot-amber { background: #f59e0b; }
.signal-item__dot.dot-red { background: #ef4444; }

/* problem selector (homepage) */
.problem-selector { padding: var(--space-20) 0; }

.problem-selector__heading {
  text-align: center;
  margin-bottom: var(--space-10);
}

.problem-selector__heading h2 { margin-bottom: var(--space-3); }
.problem-selector__heading p { color: var(--c-text-2); margin: 0 auto; }

.problem-tabs {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.problem-tab {
  padding: var(--space-3) var(--space-5);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-text-2);
  background: var(--c-surface);
  transition: all var(--tr-fast);
}

.problem-tab:hover,
.problem-tab.active {
  border-color: var(--c-accent);
  color: var(--c-accent-dark);
  background: var(--c-accent-light);
}

.problem-panels { position: relative; }

.problem-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: var(--col-gap);
  align-items: center;
}

.problem-panel.active { display: grid; }

.problem-panel__text h3 {
  margin-bottom: var(--space-4);
}

.problem-panel__text p {
  color: var(--c-text-2);
  margin-bottom: var(--space-5);
  line-height: 1.7;
}

.problem-panel__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.problem-panel__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.9375rem;
}

.check-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--c-accent);
}

.problem-panel__visual {
  background: var(--c-dark);
  border-radius: var(--r-lg);
  padding: var(--space-8);
  color: rgba(255,255,255,.7);
}

.terminal-line {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: rgba(255,255,255,.55);
}

.terminal-line .t-prompt { color: var(--c-accent); }
.terminal-line .t-ok { color: #4ade80; }
.terminal-line .t-warn { color: #f59e0b; }
.terminal-line .t-fail { color: #f87171; }
.terminal-line .t-cmd { color: rgba(255,255,255,.85); }

/* counters */
.stats-row {
  background: var(--c-dark);
  color: #fff;
  padding: var(--space-16) 0;
}

.stats-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--col-gap);
  text-align: center;
}

.stat-item__num {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  color: var(--c-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-item__label {
  font-size: 0.875rem;
  color: rgba(255,255,255,.55);
  max-width: 18ch;
  margin: 0 auto;
  line-height: 1.5;
}

/* accordion FAQ */
.faq-section { padding: var(--space-20) 0; }

.faq-section__heading {
  max-width: 520px;
  margin-bottom: var(--space-10);
}

.faq-section__heading h2 { margin-bottom: var(--space-3); }
.faq-section__heading p { color: var(--c-text-2); }

.faq-list { max-width: 700px; }

.faq-item {
  border-bottom: 1px solid var(--c-border);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: var(--space-5) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--c-text);
  transition: color var(--tr-fast);
}

.faq-question:hover { color: var(--c-accent-dark); }

.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--c-accent);
  transition: transform var(--tr-base);
}

.faq-item.open .faq-icon { transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer p {
  padding-bottom: var(--space-5);
  color: var(--c-text-2);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.faq-item.open .faq-answer { max-height: 500px; }

/* field notes cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-6);
}

.note-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--tr-base), transform var(--tr-base);
  position: relative;
}

.note-card:hover {
  box-shadow: var(--sh-md);
  transform: translateY(-2px);
}

.note-card__img {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.note-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--tr-slow);
}

.note-card:hover .note-card__img img { transform: scale(1.04); }

.note-card__body {
  padding: var(--space-5) var(--space-6) var(--space-6);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.note-card__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent-dark);
  background: var(--c-accent-light);
  padding: 3px var(--space-3);
  border-radius: var(--r-full);
  margin-bottom: var(--space-3);
}

.note-card__title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  line-height: 1.3;
  margin-bottom: var(--space-3);
  color: var(--c-text);
}

.note-card__excerpt {
  font-size: 0.875rem;
  color: var(--c-text-2);
  line-height: 1.65;
  flex: 1;
  margin-bottom: var(--space-4);
}

.note-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.775rem;
  color: var(--c-text-3);
}

.note-card__meta::before {
  content: '';
  display: block;
  height: 1px;
  background: var(--c-border);
  flex: 1;
  margin-bottom: 0;
}

/* article layout */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: var(--space-16);
  align-items: start;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.article-body { min-width: 0; }

.article-hero-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: var(--r-lg);
  margin-bottom: var(--space-8);
}

.article-hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-content h2 {
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  font-size: 1.6rem;
}

.article-content h3 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.article-content p {
  margin-bottom: var(--space-5);
  color: var(--c-text);
  font-size: 1.0625rem;
  line-height: 1.8;
  max-width: none;
}

.article-content ul, .article-content ol {
  margin: var(--space-4) 0 var(--space-6) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--c-text);
}

.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }

.article-sidebar {
  position: sticky;
  top: calc(var(--header-h) + var(--space-8));
}

.sidebar-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-5);
}

.sidebar-card h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--c-border);
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toc-list a {
  font-size: 0.8125rem;
  color: var(--c-text-3);
  transition: color var(--tr-fast);
  line-height: 1.5;
  display: block;
}

.toc-list a:hover { color: var(--c-accent-dark); }
.toc-list a.active { color: var(--c-accent-dark); font-weight: 500; }

.related-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.related-list a {
  font-size: 0.825rem;
  color: var(--c-text-2);
  line-height: 1.4;
  font-family: var(--font-serif);
  transition: color var(--tr-fast);
}

.related-list a:hover { color: var(--c-accent-dark); }

/* article nav prev/next */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  padding: var(--space-8) var(--space-6);
  max-width: var(--max-w);
  margin: 0 auto;
  border-top: 1px solid var(--c-border);
}

.article-nav__link {
  padding: var(--space-5);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  transition: border-color var(--tr-fast), box-shadow var(--tr-fast);
  font-size: 0.875rem;
}

.article-nav__link:hover {
  border-color: var(--c-accent);
  box-shadow: var(--sh-sm);
}

.article-nav__dir {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-3);
  display: block;
  margin-bottom: var(--space-2);
}

.article-nav__title {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--c-text);
  display: block;
}

.article-nav__link--next { text-align: right; }

/* services page */
.service-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
  transition: box-shadow var(--tr-base);
}

.service-card:hover { box-shadow: var(--sh-md); }

.service-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent-dark);
  margin-bottom: var(--space-4);
}

.service-card h3 { margin-bottom: var(--space-3); }

.service-card .service-who {
  font-size: 0.875rem;
  color: var(--c-accent-dark);
  font-weight: 500;
  margin-bottom: var(--space-4);
}

.service-card p {
  color: var(--c-text-2);
  margin-bottom: var(--space-5);
  font-size: 0.9375rem;
  max-width: none;
}

.service-includes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2) var(--space-4);
  margin-bottom: var(--space-5);
}

.service-includes li {
  font-size: 0.875rem;
  color: var(--c-text-2);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.service-includes li::before {
  content: '→';
  color: var(--c-accent);
  flex-shrink: 0;
}

.service-scope-note {
  font-size: 0.825rem;
  color: var(--c-text-3);
  font-style: italic;
  border-left: 3px solid var(--c-border);
  padding-left: var(--space-4);
  margin-top: var(--space-4);
}

/* contact form */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--space-16);
  align-items: start;
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--c-text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-surface);
  color: var(--c-text);
  font-size: 0.9375rem;
  transition: border-color var(--tr-fast), box-shadow var(--tr-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(0,184,217,.12);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.captcha-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
  color: var(--c-text-2);
  margin-bottom: var(--space-3);
}

.captcha-input {
  max-width: 120px;
}

.captcha-error {
  font-size: 0.8rem;
  color: #ef4444;
  margin-top: var(--space-1);
  display: none;
}

.captcha-error.visible { display: block; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--r-md);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: all var(--tr-fast);
}

.btn-primary {
  background: var(--c-accent);
  color: var(--c-dark);
}

.btn-primary:hover {
  background: var(--c-accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--sh-sm);
}

.btn-outline {
  border: 2px solid var(--c-accent);
  color: var(--c-accent-dark);
}

.btn-outline:hover {
  background: var(--c-accent-light);
}

.form-success {
  background: #f0fdf4;
  border: 1.5px solid #86efac;
  border-radius: var(--r-md);
  padding: var(--space-6);
  color: #166534;
  display: none;
}

.form-success.visible { display: block; }

.contact-sidebar .info-block {
  margin-bottom: var(--space-6);
}

.contact-sidebar .info-block h4 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  margin-bottom: var(--space-3);
}

.contact-sidebar .info-block p,
.contact-sidebar .info-block a {
  font-size: 0.875rem;
  color: var(--c-text-2);
  line-height: 1.6;
}

.contact-sidebar .info-block a:hover { color: var(--c-accent-dark); }

/* threat-check page */
.threat-tool {
  background: var(--c-dark);
  border-radius: var(--r-lg);
  padding: var(--space-8);
  max-width: 680px;
}

.threat-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

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

.threat-checkbox {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--c-accent);
  cursor: pointer;
}

.threat-label { font-size: 0.9375rem; color: rgba(255,255,255,.8); line-height: 1.5; }
.threat-label strong { color: #fff; font-weight: 600; }
.threat-label small { display: block; color: rgba(255,255,255,.4); font-size: 0.8rem; margin-top: 2px; }

.threat-result {
  margin-top: var(--space-6);
  padding: var(--space-6);
  border-radius: var(--r-md);
  display: none;
}

.threat-result.visible { display: block; }
.threat-result.low { background: rgba(74,222,128,.1); border: 1px solid rgba(74,222,128,.25); }
.threat-result.medium { background: rgba(245,158,11,.1); border: 1px solid rgba(245,158,11,.25); }
.threat-result.high { background: rgba(248,113,113,.1); border: 1px solid rgba(248,113,113,.25); }

.threat-result-score {
  font-family: var(--font-serif);
  font-size: 2rem;
  margin-bottom: var(--space-3);
}

.threat-result.low .threat-result-score { color: #4ade80; }
.threat-result.medium .threat-result-score { color: #f59e0b; }
.threat-result.high .threat-result-score { color: #f87171; }

.threat-result p { color: rgba(255,255,255,.7); font-size: 0.9375rem; max-width: none; }

/* about page */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-16);
  align-items: center;
}

.principle-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  counter-reset: principle;
}

.principle-item {
  display: flex;
  gap: var(--space-5);
  counter-increment: principle;
}

.principle-item::before {
  content: counter(principle, decimal-leading-zero);
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--c-accent);
  line-height: 1;
  flex-shrink: 0;
  width: 2.5rem;
}

.principle-item h4 { margin-bottom: var(--space-2); }
.principle-item p { color: var(--c-text-2); font-size: 0.9375rem; max-width: none; }

.author-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--space-6);
}

.author-card__header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--c-border);
}

.author-card__name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  margin-bottom: var(--space-1);
}

.author-card__role {
  font-size: 0.8rem;
  color: var(--c-accent-dark);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.author-card p {
  font-size: 0.875rem;
  color: var(--c-text-2);
  line-height: 1.65;
  max-width: none;
  margin-bottom: var(--space-3);
}

.author-card .linkedin-link {
  font-size: 0.8rem;
  color: var(--c-accent-dark);
  font-weight: 500;
}

.author-card .linkedin-link:hover { text-decoration: underline; }

/* legal pages */
.legal-layout {
  max-width: 740px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.legal-content h2 {
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
}

.legal-content h3 {
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.legal-content p {
  color: var(--c-text-2);
  margin-bottom: var(--space-4);
  font-size: 0.9375rem;
  line-height: 1.75;
  max-width: none;
}

.legal-content ul {
  list-style: disc;
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--c-text-2);
  font-size: 0.9375rem;
}

/* scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* footer */
#site-footer {
  background: var(--c-dark);
  color: rgba(255,255,255,.65);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--col-gap);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.7;
  margin-top: var(--space-4);
  max-width: 28ch;
  max-width: none;
}

.footer-col h5 {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  margin-bottom: var(--space-5);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col a {
  font-size: 0.875rem;
  color: rgba(255,255,255,.6);
  transition: color var(--tr-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 0.775rem;
  color: rgba(255,255,255,.3);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-brand .r27g7-logo img {
  max-width: calc(var(--logo-w) * 0.9);
  max-height: calc(var(--logo-h) * 0.9);
  filter: brightness(0) invert(1) opacity(0.7);
}

/* cookie */
#cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--c-dark);
  border-top: 1px solid rgba(255,255,255,.1);
  z-index: var(--z-cookie);
  padding: var(--space-5) var(--space-6);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}

#cookie-banner.show { transform: translateY(0); }

.cookie-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.cookie-inner p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,.6);
  flex: 1;
  min-width: 240px;
  max-width: none;
}

.cookie-inner a {
  color: var(--c-accent);
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  gap: var(--space-3);
  flex-shrink: 0;
}

.cookie-btn {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--r-md);
  font-size: 0.8125rem;
  font-weight: 600;
  transition: all var(--tr-fast);
}

#cookie-accept {
  background: var(--c-accent);
  color: var(--c-dark);
}

#cookie-accept:hover { background: var(--c-accent-dark); color: #fff; }

#cookie-decline {
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.65);
}

#cookie-decline:hover { border-color: rgba(255,255,255,.4); color: #fff; }

/* back to top */
#back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  background: var(--c-accent);
  color: var(--c-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-back-to-top);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--tr-base), transform var(--tr-base);
  box-shadow: var(--sh-md);
}

#back-to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

#back-to-top svg { width: 18px; height: 18px; }

/* animations */
@keyframes r27g7-fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes r27g7-pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.signal-item__dot { animation: r27g7-pulse-dot 2s ease infinite; }
.signal-item:nth-child(2) .signal-item__dot { animation-delay: 0.4s; }
.signal-item:nth-child(3) .signal-item__dot { animation-delay: 0.8s; }

/* responsive */
@media (min-width: 1025px) {
  .nav-links { display: flex; }
  .hamburger { display: none; }
}

@media (max-width: 1024px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}

@media (max-width: 768px) {
  .contact-layout { grid-template-columns: 1fr; }
  .about-intro { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .problem-panel.active { grid-template-columns: 1fr; }
  .service-includes { grid-template-columns: 1fr; }
  .article-nav { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-type { padding: var(--space-16) 0 var(--space-20); }
  .cards-grid { grid-template-columns: 1fr; }
}

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