:root {
  --color-primary: #0A1E3F;
  --color-primary-deep: #081730;
  --color-accent: #39FF88;
  --color-accent-orange: #FF7A29;
  --color-alert: #FF3B30;
  --color-off-white: #F5F7FA;
  --color-ink: #1E2028;
  --color-blue-soft: #7A9CC6;
  --color-deep-black: #0B0D12;
  --color-slate: #2C3E70;
  --color-border: #E3E9F2;
  --font-headline: 'Familjen Grotesk', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-number: 'DIN Alternate', 'Roboto Mono', monospace;
  --base-size: 16px;
  --scale: 1.2;
  --container: 1200px;
  --shadow-card: 0 1px 2px rgba(11, 13, 18, 0.04);
  --shadow-lift: 0 14px 30px rgba(11, 13, 18, 0.1);
  --aspect: 16 / 9;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--base-size);
  line-height: 1.75;
  color: var(--color-ink);
  background-color: var(--color-off-white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

ul[class], ol[class] {
  list-style: none;
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-primary);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--color-accent);
  color: var(--color-deep-black);
}

h1, h2, h3, h4 {
  font-family: var(--font-headline);
  line-height: 1.15;
  color: var(--color-primary);
  overflow-wrap: break-word;
}

h1 {
  font-size: clamp(2.6rem, 6vw, 5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
}

h4 {
  font-size: 1.125rem;
}

p {
  max-width: 70ch;
}

strong, b {
  font-weight: 700;
}

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

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1200;
  transform: translateY(-300%);
  background: var(--color-deep-black);
  color: var(--color-accent);
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-primary);
  color: #ffffff;
}

.header-terraces {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
  background:
    repeating-radial-gradient(ellipse at 20% 115%, transparent 0 26px, rgba(57, 255, 136, 0.14) 26px 28px),
    repeating-radial-gradient(ellipse at 85% 135%, transparent 0 40px, rgba(122, 156, 198, 0.12) 40px 42px);
}

.header-meta {
  position: relative;
  z-index: 1;
  background: var(--color-deep-black);
  border-bottom: 1px solid var(--color-slate);
  padding: 0.3rem 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-align: center;
  color: var(--color-blue-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-meta-dot {
  display: inline-block;
  width: 0.55em;
  height: 0.55em;
  margin-right: 0.5em;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent);
  vertical-align: baseline;
}

.header-shell {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 4vw, 2rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #ffffff;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  background: var(--color-accent);
  color: var(--color-deep-black);
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1.1rem;
  clip-path: polygon(0 0, 84% 0, 100% 100%, 0 100%);
}

.brand-text {
  display: grid;
  gap: 0;
}

.brand-name {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.brand-tagline {
  font-family: var(--font-number);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
}

.site-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(0.4rem, 1.2vw, 1.1rem);
}

.nav-link {
  display: inline-block;
  padding: 0.5rem 0.25rem;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.2;
  border-bottom: 2px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link[aria-current="page"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.scroll-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  z-index: 5;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-orange));
  transform-origin: 0 50%;
  transform: scaleX(0);
  pointer-events: none;
  will-change: transform;
}

.site-footer {
  position: relative;
  background: var(--color-deep-black);
  color: #AEB9CE;
  overflow: hidden;
}

.footer-terraces {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
  background:
    repeating-radial-gradient(ellipse at 15% 120%, transparent 0 30px, rgba(57, 255, 136, 0.08) 30px 32px),
    repeating-radial-gradient(ellipse at 90% 130%, transparent 0 44px, rgba(255, 122, 41, 0.05) 44px 46px),
    linear-gradient(90deg, rgba(10, 30, 63, 0.65), rgba(11, 13, 18, 0.25));
}

.footer-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 2rem;
  padding: 3rem 0;
}

.footer-logo {
  color: #ffffff;
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.footer-tagline {
  color: var(--color-accent);
  font-family: var(--font-number);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.footer-about {
  margin-top: 1rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: #8A97AF;
  max-width: 42ch;
}

.footer-title {
  color: #ffffff;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links ul {
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.footer-links a {
  color: #AEB9CE;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.16s ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--color-accent);
}

.footer-contact p {
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  line-height: 1.6;
}

.footer-icp {
  color: var(--color-blue-soft);
  font-family: var(--font-number);
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.footer-note {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(10, 30, 63, 0.55);
  font-size: 0.8rem;
  color: #9AA7C2;
}

.footer-note .container {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.footer-note p {
  max-width: none;
}

.footer-bottom {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--color-slate);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
  font-size: 0.8125rem;
  color: #8694AE;
}

.footer-bottom-inner p {
  max-width: none;
}

.section {
  padding: clamp(3rem, 6vw, 5.5rem) 0;
}

.section-tight {
  padding: 1.5rem 0;
}

.section-title {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

.section-title::before {
  content: "";
  width: 0.6em;
  height: 0.6em;
  background: var(--color-accent);
  transform: skewX(-15deg);
}

.page-head {
  position: relative;
  overflow: hidden;
  background: var(--color-primary);
  color: #ffffff;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.page-head .breadcrumb {
  margin-bottom: 1rem;
}

.page-head h1,
.page-head h2 {
  color: #ffffff;
}

.page-head p {
  color: rgba(255, 255, 255, 0.75);
}

.page-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  color: #ffffff;
}

.page-intro {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 0.5rem;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.breadcrumb a {
  color: var(--color-accent);
  text-underline-offset: 3px;
}

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

.breadcrumb [aria-current="page"] {
  color: #ffffff;
  text-decoration: none;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25em 0.7em;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.6;
}

.tag-green {
  background: var(--color-accent);
  color: var(--color-deep-black);
}

.tag-orange {
  background: var(--color-accent-orange);
  color: var(--color-deep-black);
}

.tag-red {
  background: var(--color-alert);
  color: #ffffff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 2.75rem;
  padding: 0.7rem 1.4rem;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  line-height: 1.2;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}

.btn:hover {
  background: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-deep-black);
}

.btn-primary:hover {
  background: var(--color-accent-orange);
  border-color: var(--color-accent-orange);
  color: var(--color-deep-black);
  transform: translateY(-2px);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.8);
  color: #ffffff;
}

.btn-ghost:hover {
  background: #ffffff;
  color: var(--color-primary);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  position: relative;
  padding: 1.5rem;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

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

.card-cut {
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card > p {
  color: #55617A;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.stat {
  background: #ffffff;
  border: 1px solid var(--color-border);
  padding: 1.25rem;
}

.stat-value {
  font-family: var(--font-number);
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-slate);
}

.stat--alert .stat-value {
  color: var(--color-alert);
}

.stat--green .stat-value {
  color: #0B7A44;
}

.table-wrap {
  overflow-x: auto;
  background: #ffffff;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.data-table {
  width: 100%;
  min-width: 32rem;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  background: var(--color-primary);
  color: #ffffff;
  font-family: var(--font-headline);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.data-table tr:last-child td {
  border-bottom: 0;
}

.data-table tr:hover td {
  background: rgba(57, 255, 136, 0.07);
}

.alert {
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--color-alert);
  background: #FFF3F2;
  color: #7A2A22;
}

.alert-info {
  border-left-color: var(--color-accent);
  background: #ECFDF3;
  color: #0B5E34;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--color-border);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 2.5rem 1rem 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  position: relative;
  border-left: 4px solid var(--color-accent);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent-orange);
  font-weight: 700;
}

.faq-item[open] summary {
  border-left-color: var(--color-accent-orange);
}

.faq-item[open] summary::after {
  content: "–";
}

.details-content {
  padding: 0 1.25rem 1rem;
}

.details-content p + p {
  margin-top: 0.5rem;
}

.figure {
  margin: 0;
}

.image-ratio {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: var(--aspect);
  background: var(--color-primary);
  color: var(--color-blue-soft);
}

.image-ratio::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-radial-gradient(ellipse at 20% 110%, transparent 0 20px, rgba(57, 255, 136, 0.12) 20px 22px);
  pointer-events: none;
}

.image-placeholder {
  position: relative;
  z-index: 1;
  padding: 1rem;
  font-family: var(--font-headline);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-blue-soft);
}

.image-caption {
  padding: 0.65rem 0 0;
  font-size: 0.8rem;
  color: var(--color-slate);
}

.image-ratio--wide {
  --aspect: 21 / 9;
}

.image-ratio--portrait {
  --aspect: 4 / 5;
}

.terraced-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-radial-gradient(ellipse at 50% 110%, transparent 0 18px, rgba(57, 255, 136, 0.12) 18px 20px);
}

.speed-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(-45deg, transparent 0 12px, rgba(255, 255, 255, 0.05) 12px 14px);
}

.title-cut {
  display: inline-block;
  transform: skewX(-8deg);
}

@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .header-shell {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.6rem;
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #ffffff;
    font-size: 0.875rem;
    line-height: 1;
  }

  .nav-toggle-box {
    display: grid;
    gap: 4px;
    width: 18px;
  }

  .nav-toggle-box span {
    height: 2px;
    background: var(--color-accent);
    transform-origin: center;
    transition: transform 0.18s ease, opacity 0.18s ease;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 4;
    display: none;
    margin-left: 0;
    padding: 0 clamp(1rem, 4vw, 2rem) 1rem;
    background: var(--color-primary-deep);
    border-top: 2px solid var(--color-accent);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.35);
  }

  .site-nav[data-open="true"] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 0.9rem 0.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
}

@media (max-width: 620px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .header-meta {
    font-size: 0.7rem;
  }
}

@media (max-width: 600px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .card:hover,
  .card:focus-within,
  .btn:hover {
    transform: none;
  }
}