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

:root {
  --color-bg: #0A192F;
  --color-bg-panel: #0D1E36;
  --color-bg-panel-2: #102542;
  --color-bg-dark: #060D18;
  --color-accent-orange: #FF6B35;
  --color-accent-green: #39FF14;
  --color-text: #E6F1FF;
  --color-text-strong: #FFFFFF;
  --color-text-dim: #8FA8C6;
  --color-line: rgba(57, 255, 20, 0.18);
  --color-line-orange: rgba(255, 107, 53, 0.32);
  --color-green-soft: rgba(57, 255, 20, 0.1);
  --color-orange-soft: rgba(255, 107, 53, 0.12);
  --font-display: "Oswald", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-number: "Oswald", "DIN Alternate", "Bahnschrift", "Arial Narrow", ui-monospace, monospace;
  --container: 1200px;
  --space-section: clamp(56px, 8vw, 96px);
  --radius-panel: 4px;
  --shadow-float: 0 12px 40px rgba(0, 0, 0, 0.45);
}

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    linear-gradient(rgba(57, 255, 20, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text-strong);
  margin: 0 0 0.6em;
}

p, figure, blockquote, dl, dd {
  margin: 0 0 1em;
}

a {
  color: var(--color-accent-green);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

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

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

button, input, select, textarea {
  font: inherit;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--color-accent-green);
  color: var(--color-bg-dark);
}

:focus-visible {
  outline: 3px solid var(--color-accent-orange);
  outline-offset: 3px;
  border-radius: 4px;
}

#main-content {
  position: relative;
  z-index: 1;
}

/* ========= Skip Link ========= */
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 2400;
  padding: 12px 22px;
  background: var(--color-accent-green);
  color: var(--color-bg-dark);
  font-weight: 700;
  text-decoration: none;
  border-radius: 12px;
  box-shadow: 0 4px 18px rgba(57, 255, 20, 0.5);
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ========= Header ========= */
.site-header {
  position: sticky;
  top: 12px;
  z-index: 1200;
  padding: 0 16px;
  pointer-events: none;
}

.site-header__inner {
  position: relative;
  max-width: calc(var(--container) + 48px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 20px;
  background: rgba(6, 13, 24, 0.88);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  box-shadow: var(--shadow-float);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  pointer-events: auto;
}

.site-header__inner::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 28px;
  width: 44px;
  height: 3px;
  background: var(--color-accent-green);
  border-radius: 999px;
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.6);
}

.site-header__inner::after {
  content: "";
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 5px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-green), transparent);
  border-radius: 999px;
  opacity: 0.75;
}

/* ========= Brand ========= */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

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

.brand__mark {
  position: relative;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-accent-orange), var(--color-accent-green));
  clip-path: polygon(50% 0, 100% 30%, 82% 100%, 18% 100%, 0 30%);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  filter: drop-shadow(0 0 10px rgba(57, 255, 20, 0.35));
}

.brand__mark-spark {
  width: 14px;
  height: 14px;
  background: var(--color-bg-dark);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text-strong);
  white-space: nowrap;
}

.brand__sub {
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--color-accent-green);
  white-space: nowrap;
}

.brand--footer .brand__mark {
  width: 38px;
  height: 38px;
}

/* ========= Nav ========= */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  justify-content: center;
}

.site-nav__link {
  display: block;
  padding: 8px 14px;
  font-size: 0.94rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text);
  border-radius: 999px;
  transition: background-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.site-nav__link:hover {
  background: var(--color-green-soft);
  color: var(--color-accent-green);
}

.site-nav__link[aria-current="page"] {
  background: var(--color-accent-green);
  color: var(--color-bg-dark);
  box-shadow: 0 0 18px rgba(57, 255, 20, 0.45);
}

.site-nav__link[aria-current="page"]:hover {
  color: var(--color-bg-dark);
  background: var(--color-accent-green);
}

/* ========= Header Actions ========= */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* ========= Nav Toggle ========= */
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 46px;
  padding: 8px 10px;
  background: transparent;
  border: 1px solid var(--color-line);
  border-radius: 14px;
  cursor: pointer;
  transition: border-color 0.25s ease;
}

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

.nav-toggle__bar {
  width: 18px;
  height: 2px;
  background: var(--color-accent-green);
  border-radius: 999px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle__text {
  font-family: var(--font-display);
  font-size: 0.56rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

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

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

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

/* ========= Buttons ========= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  background: transparent;
  color: var(--color-text);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: transform 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

.btn:hover {
  color: inherit;
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent-orange), #FF8C42);
  color: var(--color-bg-dark);
  filter: drop-shadow(0 4px 14px rgba(255, 107, 53, 0.35));
}

.btn--primary:hover {
  color: var(--color-bg-dark);
  transform: translateY(-2px);
  filter: drop-shadow(0 8px 24px rgba(255, 107, 53, 0.5));
}

.btn--ghost {
  border: 2px solid rgba(57, 255, 20, 0.55);
  color: var(--color-accent-green);
  background: var(--color-green-soft);
  filter: drop-shadow(0 0 6px rgba(57, 255, 20, 0.15));
}

.btn--ghost:hover {
  background: rgba(57, 255, 20, 0.18);
  transform: translateY(-2px);
}

.site-header__cta {
  padding: 10px 20px;
  font-size: 0.82rem;
}

.btn__icon {
  display: inline-block;
  font-size: 1.15em;
  line-height: 1;
  transform: translateY(-2px);
}

/* ========= Layout ========= */
.container {
  width: 100%;
  max-width: calc(var(--container) + 48px);
  margin: 0 auto;
  padding: 0 24px;
}

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

.section--alt {
  background: var(--color-bg-panel);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.stripe-bg {
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(57, 255, 20, 0.06) 0,
    rgba(57, 255, 20, 0.06) 10px,
    transparent 10px,
    transparent 24px
  );
}

.slant-divider {
  height: 6px;
  margin: 0;
  border: 0;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-green));
  clip-path: polygon(0 0, 100% 0, calc(100% - 40px) 100%, 0 100%);
}

.neon-line {
  height: 2px;
  margin: 24px 0;
  border: 0;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-green), transparent);
}

/* ========= Page Titles ========= */
.page-header {
  padding: 56px 0 32px;
  position: relative;
}

.page-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  margin: 0 0 12px;
  position: relative;
  display: inline-block;
}

.page-title::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 52px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-green));
  clip-path: polygon(0 0, 100% 0, 78% 100%, 0 100%);
}

.page-desc {
  color: var(--color-text-dim);
  max-width: 720px;
  font-size: 1.05rem;
  margin-bottom: 0;
}

/* ========= Section Head ========= */
.section-head {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 40px;
}

.section-head__number {
  font-family: var(--font-number);
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-accent-orange);
  flex-shrink: 0;
}

.section-head__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 8px;
}

.section-head__desc {
  color: var(--color-text-dim);
  max-width: 640px;
  margin-bottom: 0;
}

/* ========= Grid ========= */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.grid__col--3 { grid-column: span 3; }
.grid__col--4 { grid-column: span 4; }
.grid__col--6 { grid-column: span 6; }
.grid__col--8 { grid-column: span 8; }
.grid__col--9 { grid-column: span 9; }

/* ========= Cards ========= */
.card {
  position: relative;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-panel);
  padding: 28px;
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  border-color: rgba(57, 255, 20, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.4);
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.32rem;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.card__desc {
  color: var(--color-text-dim);
  font-size: 0.92rem;
  margin-bottom: 0;
}

.card__meta {
  color: var(--color-text-dim);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  margin-top: 18px;
  text-transform: uppercase;
}

/* ========= Panel ========= */
.panel {
  position: relative;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-panel);
  padding: 32px;
}

.panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-accent-orange), var(--color-accent-green));
}

/* ========= Tags ========= */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-green);
  background: var(--color-green-soft);
  border: 1px solid rgba(57, 255, 20, 0.3);
  border-radius: 999px;
  white-space: nowrap;
}

/* ========= Stats ========= */
.stat {
  font-family: var(--font-number);
  font-size: clamp(2.6rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent-green);
  letter-spacing: 0.02em;
}

.stat--orange {
  color: var(--color-accent-orange);
}

.stat__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-body);
  font-size: 0.86rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-text-dim);
  text-transform: uppercase;
}

/* ========= List ========= */
.list-clean {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ========= Breadcrumbs ========= */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  font-size: 0.88rem;
  color: var(--color-text-dim);
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--color-accent-orange);
  font-weight: 700;
}

.breadcrumbs__link {
  color: var(--color-accent-green);
  text-decoration: none;
}

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

/* ========= Tables ========= */
.table-wrap {
  overflow-x: auto;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-panel);
}

.table-wrap table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.94rem;
}

.table-wrap th {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-align: left;
  padding: 14px 18px;
  border-bottom: 2px solid var(--color-accent-green);
  color: var(--color-accent-green);
  font-size: 0.82rem;
  white-space: nowrap;
}

.table-wrap td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(57, 255, 20, 0.12);
  color: var(--color-text);
}

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

/* ========= FAQ ========= */
.faq-item {
  background: var(--color-bg-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-panel);
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-item__summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1.02rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-strong);
  transition: background-color 0.25s ease;
}

.faq-item__summary:hover {
  background: var(--color-green-soft);
}

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

.faq-item__summary::-moz-list-bullet {
  display: none;
}

.faq-item__indicator {
  color: var(--color-accent-orange);
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item[open] .faq-item__indicator {
  transform: rotate(45deg);
}

.faq-item__content {
  padding: 0 24px 24px;
  color: var(--color-text-dim);
}

/* ========= Filter Bar ========= */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-line);
  color: var(--color-text-dim);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.25s ease, color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
}

.filter-btn:hover {
  border-color: var(--color-accent-green);
  color: var(--color-accent-green);
}

.filter-btn.is-active,
.filter-btn[aria-pressed="true"] {
  background: var(--color-accent-green);
  border-color: var(--color-accent-green);
  color: var(--color-bg-dark);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.35);
}

/* ========= Image Frame ========= */
.img-frame {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: var(--color-bg-panel-2);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-panel);
}

.img-frame::before {
  content: "";
  display: block;
  padding-top: 62.5%;
}

.img-frame--wide::before {
  padding-top: 42.857%;
}

.img-frame--square::before {
  padding-top: 100%;
}

.img-frame::after {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  padding: 20px;
  text-align: center;
  font-family: var(--font-number);
  font-size: 1.15rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(57, 255, 20, 0.3);
  background-image: repeating-linear-gradient(
    45deg,
    rgba(57, 255, 20, 0.05) 0,
    rgba(57, 255, 20, 0.05) 10px,
    transparent 10px,
    transparent 20px
  );
}

.img-frame > img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
}

/* ========= Footer ========= */
.site-footer {
  position: relative;
  margin-top: 72px;
  background:
    linear-gradient(160deg, rgba(57, 255, 20, 0.06) 0%, transparent 45%),
    var(--color-bg-dark);
  clip-path: polygon(0 32px, 100% 0, 100% 100%, 0 100%);
  padding-top: 72px;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-green) 60%, transparent);
  opacity: 0.65;
}

.site-footer__inner {
  position: relative;
  max-width: calc(var(--container) + 48px);
  margin: 0 auto;
  padding: 0 24px 36px;
}

.site-footer__inner::before {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -40px;
  width: 320px;
  height: 320px;
  border: 2px solid rgba(57, 255, 20, 0.1);
  border-radius: 50%;
  pointer-events: none;
}

.site-footer__inner::after {
  content: "";
  position: absolute;
  right: 48px;
  bottom: 72px;
  width: 160px;
  height: 160px;
  border: 2px solid rgba(255, 107, 53, 0.14);
  border-radius: 28px;
  transform: rotate(45deg);
  pointer-events: none;
}

.site-footer__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(57, 255, 20, 0.14);
}

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

.site-footer__note {
  margin-top: 16px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-dim);
  max-width: 400px;
}

.site-footer__heading {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-orange);
  margin-bottom: 18px;
}

.site-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.site-footer__links a {
  position: relative;
  display: inline-block;
  color: var(--color-text-dim);
  text-decoration: none;
  padding-left: 16px;
  transition: color 0.25s ease, padding-left 0.25s ease;
}

.site-footer__links a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--color-accent-green);
  transform: rotate(45deg);
  opacity: 0.7;
}

.site-footer__links a:hover {
  color: var(--color-accent-green);
  padding-left: 22px;
}

.site-footer__meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  color: var(--color-text-dim);
  font-size: 0.9rem;
}

.site-footer__meta li {
  position: relative;
  padding-left: 16px;
}

.site-footer__meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--color-accent-orange);
  transform: rotate(45deg);
}

.site-footer__bottom {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-top: 28px;
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

.site-footer__icp {
  margin: 0;
}

.site-footer__copy {
  margin: 0;
}

/* ========= Scroll Progress & To Top ========= */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(57, 255, 20, 0.12);
  z-index: 3200;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-green));
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.6);
}

.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 1500;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--color-bg-panel-2);
  border: 1px solid rgba(57, 255, 20, 0.5);
  border-radius: 14px;
  cursor: pointer;
  color: var(--color-accent-green);
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, box-shadow 0.2s ease;
}

.to-top:hover {
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.4);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ========= Reveal ========= */
@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  [data-reveal].is-revealed {
    opacity: 1;
    transform: none;
  }
}

/* ========= Responsive ========= */
@media (max-width: 992px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .grid__col--3,
  .grid__col--4 {
    grid-column: span 6;
  }

  .grid__col--6,
  .grid__col--8,
  .grid__col--9 {
    grid-column: span 12;
  }
}

@media (max-width: 960px) {
  .site-header {
    top: 8px;
    padding: 0 12px;
  }

  .site-header__inner {
    padding: 10px 14px;
    gap: 12px;
    border-radius: 999px;
  }

  .brand__name {
    font-size: 1.05rem;
  }

  .brand__sub {
    letter-spacing: 0.18em;
    font-size: 0.62rem;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 12px;
    right: 12px;
    display: none;
    flex: none;
    background: rgba(6, 13, 24, 0.97);
    border: 1px solid var(--color-line);
    border-radius: 18px;
    padding: 12px;
    box-shadow: var(--shadow-float);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .site-nav__link {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 1rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-header__cta {
    padding: 9px 14px;
    font-size: 0.78rem;
  }
}

@media (max-width: 620px) {
  .container {
    padding: 0 18px;
  }

  .section-head {
    flex-direction: column;
    gap: 8px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .grid__col--3,
  .grid__col--4 {
    grid-column: span 12;
  }

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

  .site-header__cta .btn__icon {
    display: none;
  }

  .brand__sub {
    display: none;
  }

  .brand {
    gap: 8px;
  }

  .brand__mark {
    width: 36px;
    height: 36px;
  }
}

/* ========= Reduced Motion ========= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .to-top {
    transition: none;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}