/* ============================================================
   CSS VARIABLES – Premium Dark Theme
   ============================================================ */
:root {
  --color-bg: #05070a;
  --color-surface: #0b0e14;
  --color-surface-2: #151b24;
  --color-border: rgba(255, 255, 255, 0.06);
  --color-border-hover: rgba(255, 255, 255, 0.12);

  --color-text-primary: #ffffff;
  --color-text-secondary: #eeeff3;
  --color-text-tertiary: #dee1e6;

  --color-accent: #d97e12;
  --color-accent-hover: #e08b1a;
  --color-accent-subtle: rgba(217, 126, 18, 0.12);
  --color-accent-glow: rgba(217, 126, 18, 0.25);

  --font-family:
    "Jost", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 48px;
  --space-10: 56px;
  --space-11: 64px;
  --space-12: 80px;
  --space-13: 96px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 10px 40px -12px rgba(0, 0, 0, 0.8);
  --shadow-lg: 0 20px 60px -16px rgba(0, 0, 0, 0.9);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --max-width: 1200px;
  --header-height: 72px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg {
  display: block;
  max-width: 100%;
}
a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--color-accent);
}
ul,
ol {
  list-style: none;
}

/* ============================================================
   UTILITY
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.section-padding {
  padding: var(--space-11) 0;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-tertiary);
  max-width: 640px;
  line-height: 1.7;
}

.text-center {
  text-align: center;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* ============================================================
   HEADER – Shared across all pages
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 7, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

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

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  flex-shrink: 0;
}

.header-brand svg {
  flex-shrink: 0;
  color: var(--color-accent);
}
.logoFlex {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-7);
}

.header-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-tertiary);
  transition: color var(--transition);
  padding: var(--space-1) 0;
  border-bottom: 2px solid transparent;
}
.header-nav a:hover,
.header-nav a:focus {
  color: var(--color-text-primary);
  border-bottom-color: var(--color-accent);
}

.header-nav .btn {
  border-bottom: none;
  padding: var(--space-2) var(--space-5);
  font-size: 0.8rem;
  font-weight: 600;
  margin-left: var(--space-2);
  color: var(--color-text-primary);
}
.header-nav .btn:hover {
  border-bottom: none;
  transform: translateY(-1px);
}

.header-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text-secondary);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-7);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  font-family: var(--font-family);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  line-height: 1.2;
  background: var(--color-surface-2);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}
.btn:hover {
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-outline {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
  box-shadow: none;
}
.btn-outline:hover {
  background: var(--color-surface-2);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
  color: var(--color-text-primary);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 4px 20px -8px var(--color-accent-glow);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 8px 30px -8px var(--color-accent-glow);
  color: var(--color-bg);
}

.btn-sm {
  padding: var(--space-2) var(--space-5);
  font-size: 0.8rem;
}

.btn-back {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent);
  /* color: var(--color-text-secondary); */
  border-radius: var(--radius-md);
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s;
  color: #fff !important;
}
.btn-back:hover {
  background: var(--color-accent-hover);
  text-decoration: none !important;
}

/* ============================================================
   HERO – Main page only
   ============================================================ */
.hero {
  padding: var(--space-6) 0 var(--space-10);
  background: var(--color-bg);
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 160px;
  background: linear-gradient(to top, var(--color-surface), transparent);
  pointer-events: none;
}

.hero-content {
  max-width: 740px;
  margin: 0 auto var(--space-9);
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  background: var(--color-surface-2);
  color: var(--color-text-tertiary);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-1) var(--space-3);
  border-radius: 20px;
  margin-bottom: var(--space-4);
  border: 1px solid var(--color-border);
}

.hero h1 {
  font-size: 3.75rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: var(--space-5);
  color: var(--color-text-primary);
}

.hero h1 .highlight {
  color: var(--color-accent);
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-text-tertiary);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================================
   VISUAL DISPLAY – Resolution Graphic
   ============================================================ */
.visual-display {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: var(--space-8) 0 var(--space-6);
  width: 100%;
}

.screen-box {
  position: relative;
  width: 100%;
  max-width: 640px;
  aspect-ratio: 16 / 9;
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-lg);
  box-shadow:
    0 0 60px rgba(217, 126, 18, 0.08),
    inset 0 0 60px rgba(217, 126, 18, 0.03);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition:
    box-shadow 0.3s ease,
    border-color 0.3s ease;
  background-image:
    linear-gradient(rgba(217, 126, 18, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(217, 126, 18, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
}

.screen-box:hover {
  border-color: var(--color-accent-hover);
  box-shadow:
    0 0 80px rgba(217, 126, 18, 0.15),
    inset 0 0 80px rgba(217, 126, 18, 0.05);
}

.screen-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top right,
    transparent calc(50% - 1px),
    var(--color-accent) calc(50% - 1px),
    var(--color-accent) calc(50% + 1px),
    transparent calc(50% + 1px)
  );
  opacity: 0.2;
  pointer-events: none;
  z-index: 1;
}

.screen-box::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top left,
    transparent calc(50% - 1px),
    var(--color-accent) calc(50% - 1px),
    var(--color-accent) calc(50% + 1px),
    transparent calc(50% + 1px)
  );
  opacity: 0.2;
  pointer-events: none;
  z-index: 1;
}

.aspect-ratio-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: var(--color-accent-hover);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  z-index: 10;
  letter-spacing: 0.04em;
  box-shadow: 0 4px 12px rgba(217, 126, 18, 0.3);
}

.resolution-text {
  position: relative;
  z-index: 5;
  text-align: center;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding: var(--space-4);
  background: rgba(5, 7, 10, 0.6);
  backdrop-filter: blur(4px);
  border-radius: var(--radius-md);
  border: 1px solid rgba(217, 126, 18, 0.15);
}

.resolution-text .res-number {
  font-size: clamp(1.8rem, 6vw, 3.5rem);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.resolution-text .sep {
  font-size: clamp(1.8rem, 6vw, 3.5rem);
  font-weight: 300;
  color: var(--color-accent);
  line-height: 1;
}

.resolution-label {
  position: absolute;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  background: rgba(5, 7, 10, 0.7);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  white-space: nowrap;
}

/* ============================================================
   RESOLUTION CARD – Main page
   ============================================================ */
.resolution-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--space-8) var(--space-9);
  max-width: 960px;
  margin: 0 auto;
  transition:
    box-shadow var(--transition),
    transform var(--transition);
  position: relative;
  z-index: 2;
}
.resolution-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
}

.resolution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3) var(--space-7);
}

.resolution-item {
  display: flex;
  flex-direction: column;
  padding: var(--space-3) 0 var(--space-2);
  border-bottom: 1px solid var(--color-border);
}
.resolution-item:nth-last-child(-n + 2) {
  border-bottom: none;
}

.resolution-item .label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-1);
}

.resolution-item .value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-primary);
  word-break: break-word;
}
.resolution-item .value-small {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.resolution-timestamp {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
  text-align: right;
  font-weight: 500;
}

/* ============================================================
   INFO CARDS – Main page
   ============================================================ */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-7);
}

.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  box-shadow: var(--shadow-sm);
  transition:
    box-shadow var(--transition),
    transform var(--transition),
    border-color var(--transition);
}
.info-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--color-accent);
}

.info-card .icon {
  margin-bottom: var(--space-4);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.info-card .icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-accent);
}

.info-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.info-card p {
  font-size: 0.95rem;
  color: var(--color-text-tertiary);
  line-height: 1.7;
}

.common-resolutions-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-3);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}
.common-resolutions-list span {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.common-resolutions-list .badge {
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);
  letter-spacing: 0.03em;
}

/* ============================================================
   COMPARISON TABLE – Main page
   ============================================================ */
.table-wrap {
  overflow-x: auto;
  margin-top: var(--space-7);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.table-wrap:hover {
  box-shadow: var(--shadow-md);
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 520px;
}

.table-wrap th {
  background: var(--color-surface-2);
  font-weight: 600;
  text-align: left;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-wrap td {
  padding: var(--space-3) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.table-wrap tbody tr:hover td {
  background: var(--color-surface-2);
}
.table-wrap tr:last-child td {
  border-bottom: none;
}

/* ============================================================
   FAQ ACCORDION – Main page
   ============================================================ */
.faq-list {
  max-width: 860px;
  margin: var(--space-7) auto 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition:
    box-shadow var(--transition),
    border-color var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text-primary);
  transition: background var(--transition);
  line-height: 1.4;
}
.faq-question:hover {
  background: var(--color-surface-2);
}
.faq-question:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

.faq-question .icon {
  flex-shrink: 0;
  transition:
    transform 0.3s ease,
    background 0.3s ease;
  color: var(--color-bg);
  background: var(--color-accent);
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 300;
}
.faq-item.open .faq-question .icon {
  transform: rotate(45deg);
  background: var(--color-accent-hover);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.35s ease,
    padding 0.3s ease;
  padding: 0 var(--space-6);
  color: var(--color-text-tertiary);
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 var(--space-6) var(--space-6);
}

.faq-answer p {
  margin-top: var(--space-2);
}
.faq-answer p:first-child {
  margin-top: 0;
}

/* ============================================================
   LEGAL PAGES – Privacy, Terms, Contact
   ============================================================ */
.page-content {
  padding: var(--space-6) 0 var(--space-11);
}

.page-content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.page-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: var(--space-7);
  margin-bottom: var(--space-3);
}

.page-content p,
.page-content li {
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-4);
}

.page-content ul {
  padding-left: var(--space-5);
  margin-bottom: var(--space-4);
}

.page-content li {
  margin-bottom: var(--space-2);
}

.page-content a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}
.page-content a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.page-content .last-updated {
  color: var(--color-text-tertiary);
  font-size: 0.85rem;
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.page-content .contact-info {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  margin: var(--space-6) 0;
}

.page-content .contact-info .label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-tertiary);
}

.page-content .contact-info .value {
  font-size: 1.1rem;
  color: var(--color-text-primary);
  font-weight: 500;
}

/* ============================================================
   404 PAGE
   ============================================================ */
.error-page {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  text-align: center;
  min-height: 60vh;
}

.error-page .error-box {
  max-width: 500px;
}

.error-page .error-code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.05em;
  line-height: 1;
  margin-bottom: 12px;
}

.error-page h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 12px;
}

.error-page p {
  color: var(--color-text-tertiary);
  margin-bottom: 28px;
}

/* ============================================================
   FOOTER – Shared across all pages
   ============================================================ */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-10) 0 var(--space-6);
  margin-top: var(--space-6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-9);
  margin-bottom: var(--space-8);
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-tertiary);
  max-width: 320px;
  margin-top: var(--space-3);
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-4);
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text-tertiary);
  padding: var(--space-1) 0;
  transition: color var(--transition);
}
.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

.footer-bottom .note {
  max-width: 500px;
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 992px) {
  .hero h1 {
    font-size: 2.8rem;
  }
  .resolution-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-7);
  }
  .page-content h1 {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }
  .hero {
    padding: var(--space-9) 0 var(--space-7);
  }
  .hero h1 {
    font-size: 2.2rem;
  }
  .hero p {
    font-size: 1rem;
  }

  .visual-display {
    margin: var(--space-6) 0 var(--space-5);
  }
  .screen-box {
    max-width: 100%;
  }
  .aspect-ratio-badge {
    font-size: 0.65rem;
    top: var(--space-2);
    right: var(--space-2);
  }
  .resolution-text {
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
  }
  .resolution-text .res-number {
    font-size: clamp(1.4rem, 8vw, 2.2rem);
  }
  .resolution-text .sep {
    font-size: clamp(1.4rem, 8vw, 2.2rem);
  }
  .resolution-label {
    font-size: 0.5rem;
    bottom: var(--space-2);
    padding: 0 var(--space-2);
  }

  .header-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-5) var(--space-5);
    gap: var(--space-3);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-110%);
    opacity: 0;
    transition:
      transform 0.3s ease,
      opacity 0.3s ease;
    pointer-events: none;
    align-items: stretch;
  }
  .header-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .header-nav a {
    padding: var(--space-2) 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--color-border);
  }
  .header-nav a:last-child {
    border-bottom: none;
  }
  .header-nav .btn {
    margin-left: 0;
    justify-content: center;
  }

  .header-mobile-toggle {
    display: block;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .resolution-card {
    padding: var(--space-5);
  }
  .resolution-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2) var(--space-4);
  }
  .resolution-item:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--color-border);
  }

  .info-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .common-resolutions-list {
    grid-template-columns: 1fr 1fr;
  }
  .faq-question {
    padding: var(--space-4);
    font-size: 0.95rem;
  }
  .faq-answer {
    padding: 0 var(--space-4);
  }
  .faq-item.open .faq-answer {
    padding: 0 var(--space-4) var(--space-4);
  }

  .page-content {
    padding: var(--space-8) 0 var(--space-9);
  }
  .page-content h1 {
    font-size: 1.8rem;
  }
  .page-content h2 {
    font-size: 1.3rem;
  }

  .error-page .error-code {
    font-size: 5rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }
  .resolution-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-1) var(--space-3);
  }
  .resolution-item .value {
    font-size: 0.9rem;
  }
  .info-grid {
    grid-template-columns: 1fr;
  }
  .common-resolutions-list {
    grid-template-columns: 1fr;
  }
  .section-padding {
    padding: var(--space-7) 0;
  }
  .table-wrap table {
    font-size: 0.8rem;
    min-width: 400px;
  }
  .table-wrap th,
  .table-wrap td {
    padding: var(--space-2) var(--space-3);
  }
  .resolution-card {
    padding: var(--space-4);
  }
  .resolution-text .res-number {
    font-size: clamp(1.2rem, 10vw, 1.8rem);
  }
  .resolution-text .sep {
    font-size: clamp(1.2rem, 10vw, 1.8rem);
  }
  .aspect-ratio-badge {
    font-size: 0.55rem;
  }

  .page-content h1 {
    font-size: 1.5rem;
  }
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-3) var(--space-5);
  background: var(--color-accent);
  color: var(--color-bg);
  border-radius: var(--radius-sm);
  z-index: 200;
  font-weight: 600;
  font-size: 0.9rem;
}
.skip-link:focus {
  top: var(--space-3);
}

/* ============================================================
   BLOG SECTION
   ============================================================ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-4);
}

.blog-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.blog-card .card-image {
  height: 200px;
  background: var(--color-surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.blog-card .card-image .category-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.blog-card .card-body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card .card-body .meta {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-2);
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.blog-card .card-body .meta .date {
  color: var(--color-text-tertiary);
}

.blog-card .card-body .meta .read-time {
  color: var(--color-text-tertiary);
}

.blog-card .card-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
  transition: color var(--transition);
}

.blog-card .card-body h3 a {
  color: var(--color-text-primary);
  text-decoration: none;
}

.blog-card .card-body h3 a:hover {
  color: var(--color-accent);
}

.blog-card .card-body p {
  font-size: 0.95rem;
  color: var(--color-text-tertiary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
  flex: 1;
}

.blog-card .card-body .read-more {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: gap var(--transition);
  margin-top: auto;
}

.blog-card .card-body .read-more:hover {
  gap: var(--space-3);
}

.blog-card .card-body .read-more svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.blog-card .card-body .read-more:hover svg {
  transform: translateX(4px);
}

/* ============================================================
   BLOG POST PAGE
   ============================================================ */
.blog-post {
  max-width: 820px;
  margin: 0 auto;
  padding: var(--space-10) 0 var(--space-11);
}

.blog-post .post-header {
  margin-bottom: var(--space-8);
}

.blog-post .post-header .post-category {
  display: inline-block;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
}

.blog-post .post-header h1 {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.blog-post .post-header .post-meta {
  display: flex;
  gap: var(--space-4);
  color: var(--color-text-tertiary);
  font-size: 0.9rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-4);
}

.blog-post .post-content {
  color: var(--color-text-secondary);
  line-height: 1.9;
  font-size: 1.05rem;
}

.blog-post .post-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.blog-post .post-content h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.blog-post .post-content p {
  margin-bottom: var(--space-4);
}

.blog-post .post-content ul,
.blog-post .post-content ol {
  padding-left: var(--space-5);
  margin-bottom: var(--space-4);
}

.blog-post .post-content li {
  margin-bottom: var(--space-2);
}

.blog-post .post-content a {
  color: var(--color-accent);
  text-decoration: none;
}

.blog-post .post-content a:hover {
  text-decoration: underline;
}

.blog-post .post-content .highlight-box {
  background: var(--color-surface-2);
  border-left: 4px solid var(--color-accent);
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-md);
  margin: var(--space-5) 0;
}

.blog-post .post-content .highlight-box p:last-child {
  margin-bottom: 0;
}

.blog-post .post-navigation {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-9);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.blog-post .post-navigation a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.blog-post .post-navigation a:hover {
  color: var(--color-accent);
}

@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr 1fr;
  }
  .blog-post .post-header h1 {
    font-size: 2rem;
  }
  .blog-post .post-content {
    font-size: 1rem;
  }
  .blog-post .post-content h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
  .blog-post .post-header h1 {
    font-size: 1.6rem;
  }
}

/* ============================================================
   BLOG POST – List & Image Styles
   ============================================================ */
.blog-post .post-content ul {
  list-style: disc;
  padding-left: var(--space-5);
  margin-bottom: var(--space-4);
}

.blog-post .post-content ol {
  list-style: decimal;
  padding-left: var(--space-5);
  margin-bottom: var(--space-4);
}

.blog-post .post-content ul li,
.blog-post .post-content ol li {
  margin-bottom: var(--space-2);
  padding-left: var(--space-2);
}

/* Optional: Custom bullet style for unordered lists */
.blog-post .post-content ul li::marker {
  color: var(--color-accent);
}

.blog-post .post-content ol li::marker {
  color: var(--color-accent);
  font-weight: 600;
}

/* ============================================================
   BLOG POST – Image Styles
   ============================================================ */
.blog-post .post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--space-5) 0;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  display: block;
}

/* Figure with caption */
.blog-post .post-content figure {
  margin: var(--space-5) 0;
}

.blog-post .post-content figure img {
  margin: 0 0 var(--space-2) 0;
}

.blog-post .post-content figure figcaption {
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
  text-align: center;
  font-style: italic;
}

/* Responsive image wrapper for tables or wide content */
.blog-post .post-content .image-wrapper {
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin: var(--space-5) 0;
}

.blog-post .post-content .image-wrapper img {
  margin: 0;
  border-radius: 0;
}

/* ============================================================
   BLOG POST – Image Styles (FIXED)
   ============================================================ */

/* Image container with visual separation */
.blog-post .post-content figure {
  background: var(--color-surface-2);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.03) inset;
  margin: var(--space-6) 0;
  transition: box-shadow 0.3s ease;
}

.blog-post .post-content figure:hover {
  box-shadow:
    0 12px 48px rgba(0, 0, 0, 0.8),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

.blog-post .post-content figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius-md) - 2px);
  margin: 0;
  border: none;
  box-shadow: none;
}

.blog-post .post-content figure figcaption {
  margin-top: var(--space-3);
  padding-top: var(--space-2);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 0.85rem;
  font-style: italic;
  line-height: 1.5;
}

/* Simple image (not wrapped in figure) */
.blog-post .post-content img:not(figure img) {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  padding: var(--space-2);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  margin: var(--space-5) 0;
}

/* Image wrapper for full-width images */
.blog-post .post-content .image-wrapper {
  background: var(--color-surface-2);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  margin: var(--space-6) 0;
}

.blog-post .post-content .image-wrapper img {
  margin: 0;
  border-radius: calc(var(--radius-md) - 2px);
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 370px) {
  .header-inner span {
    display: none;
  }
}