:root {
  --ink: #0A0D0C;
  --ink-2: #0D2B22;
  --ink-3: #14483A;
  --cyan: #2FE8B8;
  --cyan-deep: #17A98A;
  --amber: #FFB03A;
  --violet: #8E6BFF;
  --paper: #F1F5F0;
  --muted: #93A39C;
  --coral: #FF6B5A;
  --line: #1F2B27;
  --line-strong: #2b3c36;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-display: "Arial Narrow", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SFMono-Regular", "Roboto Mono", "Menlo", "Consolas", monospace;
  --rail-left: 108px;
  --rail-right: 76px;
  --header-mobile: 64px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

button {
  background: none;
  border: 0;
  color: inherit;
}

ul,
ol {
  margin-top: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.6em;
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

::selection {
  background: var(--cyan);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

#main-content {
  scroll-margin-top: calc(var(--header-mobile) + 12px);
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 999;
  padding: 10px 14px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
  pointer-events: auto;
}

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

.ng-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 200;
  color: var(--paper);
  pointer-events: none;
}

.ng-header__rail {
  pointer-events: auto;
}

.ng-header__rail--left {
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--header-mobile);
  padding: 0 18px;
  background: rgba(10, 13, 12, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.ng-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
  line-height: 1;
  text-decoration: none;
}

.ng-brand__mark {
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 300;
  letter-spacing: -0.04em;
}

.ng-brand__text {
  color: var(--paper);
  font-size: 12px;
  letter-spacing: 0.24em;
}

.ng-header__meta {
  display: none;
}

.ng-header__rail--right {
  display: none;
}

.ng-header__utility {
  display: none;
}

.ng-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.ng-nav {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 210;
  max-height: 76vh;
  overflow: auto;
  padding: 22px 18px calc(88px + env(safe-area-inset-bottom, 0px));
  background: linear-gradient(160deg, var(--ink-3), var(--ink-2) 46%, var(--ink));
  border-top: 2px solid var(--cyan);
  box-shadow: 0 -24px 60px rgba(0, 0, 0, 0.45);
  transform: translateY(112%);
  visibility: hidden;
  pointer-events: none;
  transition: transform 0.32s var(--ease), visibility 0.32s var(--ease);
}

.ng-header[data-open="true"] .ng-nav {
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
}

.ng-nav__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ng-nav__item {
  min-width: 0;
}

.ng-nav__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 13px 6px;
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease), padding 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.ng-nav__link:hover {
  color: var(--cyan);
}

.ng-nav__link[aria-current="page"] {
  padding-left: 12px;
  background: rgba(47, 232, 184, 0.08);
  color: var(--cyan);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.ng-nav__index {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0;
}

.ng-nav__label {
  white-space: nowrap;
}

.ng-nav-toggle {
  position: fixed;
  right: 18px;
  bottom: calc(18px + env(safe-area-inset-bottom, 0px));
  z-index: 230;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 16px;
  background: var(--ink-2);
  border: 1px solid var(--cyan);
  border-radius: 999px;
  color: var(--cyan);
  cursor: pointer;
  pointer-events: auto;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), transform 0.18s var(--ease);
}

.ng-nav-toggle:hover {
  background: var(--ink-3);
  transform: translateY(-2px);
}

.ng-header[data-open="true"] .ng-nav-toggle {
  background: var(--cyan);
  color: var(--ink);
}

.ng-nav-toggle__icon {
  display: grid;
  gap: 4px;
  width: 18px;
}

.ng-nav-toggle__line {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.ng-header[data-open="true"] .ng-nav-toggle__line:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.ng-header[data-open="true"] .ng-nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.ng-header[data-open="true"] .ng-nav-toggle__line:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

.ng-nav-toggle__text {
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1;
  letter-spacing: 0.18em;
}

@media (max-width: 1023px) {
  body {
    padding-top: var(--header-mobile);
  }
}

@media (min-width: 1024px) {
  body {
    padding-right: var(--rail-right);
    padding-left: var(--rail-left);
  }

  .ng-header__rail--left {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: var(--rail-left);
    height: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 28px 14px 24px;
    background: rgba(10, 13, 12, 0.94);
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  .ng-brand {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .ng-brand__mark {
    font-size: 2.2rem;
  }

  .ng-brand__text {
    font-size: 11px;
    letter-spacing: 0.34em;
    writing-mode: vertical-rl;
    text-orientation: mixed;
  }

  .ng-header__meta {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: auto;
    padding-top: 24px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    writing-mode: vertical-rl;
    text-orientation: mixed;
  }

  .ng-nav {
    top: 172px;
    right: auto;
    bottom: 96px;
    left: 0;
    width: var(--rail-left);
    max-height: none;
    overflow-y: auto;
    padding: 0 14px;
    background: transparent;
    border: 0;
    box-shadow: none;
    transform: none;
    visibility: visible;
    pointer-events: auto;
    transition: none;
  }

  .ng-nav__list {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .ng-nav__link {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 10px 6px;
    border-bottom: 0;
    font-size: 12px;
    letter-spacing: 0.12em;
  }

  .ng-nav__label {
    line-height: 1.25;
    letter-spacing: 0.18em;
    writing-mode: vertical-rl;
    text-orientation: mixed;
  }

  .ng-nav__link[aria-current="page"] {
    padding-left: 10px;
    background: linear-gradient(90deg, rgba(47, 232, 184, 0.14), transparent);
    box-shadow: inset 3px 0 0 var(--cyan);
  }

  .ng-header__rail--right {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    width: var(--rail-right);
    padding: 28px 12px;
    background: rgba(10, 13, 12, 0.94);
    border-left: 1px solid var(--line);
  }

  .ng-header__utility {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .ng-header__cta {
    min-height: 120px;
    padding: 16px 8px;
    border: 1px solid var(--cyan);
    color: var(--cyan);
    font-size: 11px;
    line-height: 1.3;
    letter-spacing: 0.18em;
    text-align: center;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transition: background-color 0.18s var(--ease), color 0.18s var(--ease), transform 0.18s var(--ease);
  }

  .ng-header__cta:hover {
    background: var(--cyan);
    color: var(--ink);
    transform: translateY(-2px);
  }

  .ng-header__cta--ghost {
    border-color: var(--amber);
    color: var(--amber);
  }

  .ng-header__cta--ghost:hover {
    background: var(--amber);
    color: var(--ink);
  }

  .ng-nav-toggle {
    display: none;
  }

  .ng-to-top {
    right: calc(var(--rail-right) + 20px);
    bottom: 28px;
  }
}

.ng-container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 64px);
}

.ng-container--narrow {
  max-width: 820px;
}

.ng-section {
  padding-block: clamp(48px, 8vw, 96px);
}

.ng-section--tight {
  padding-block: clamp(28px, 5vw, 56px);
}

.ng-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.6vw, 32px);
}

.ng-col-4 {
  grid-column: span 4;
}

.ng-col-6 {
  grid-column: span 6;
}

.ng-col-8 {
  grid-column: span 8;
}

.ng-col-12 {
  grid-column: span 12;
}

.ng-grid__main {
  grid-column: 1 / span 8;
}

.ng-grid__aside {
  grid-column: 10 / span 3;
}

@media (max-width: 900px) {
  .ng-col-4,
  .ng-col-6,
  .ng-col-8,
  .ng-grid__main,
  .ng-grid__aside {
    grid-column: 1 / -1;
  }
}

.ng-display {
  margin: 0 0 0.4em;
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 6rem);
  font-weight: 300;
  line-height: 0.92;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.ng-h1 {
  margin: 0 0 0.45em;
  font-size: clamp(2.2rem, 4.6vw, 3.25rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.ng-h2 {
  margin: 0 0 0.6em;
  font-size: clamp(1.75rem, 3vw, 2.15rem);
  font-weight: 500;
  line-height: 1.1;
}

.ng-h3 {
  margin: 0 0 0.6em;
  font-size: clamp(1.12rem, 1.8vw, 1.38rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.ng-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.ng-kicker::before {
  content: "";
  width: 20px;
  height: 1px;
  background: currentColor;
}

.ng-lead {
  max-width: 64ch;
  color: var(--paper);
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  line-height: 1.65;
}

.ng-caption {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.02em;
}

.ng-meta {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.ng-prose {
  max-width: 68ch;
  color: var(--paper);
}

.ng-prose p {
  margin: 0 0 1.15em;
}

.ng-prose h2,
.ng-prose h3 {
  margin-top: 1.6em;
}

.ng-prose ul,
.ng-prose ol {
  padding-left: 1.2em;
}

.ng-rule {
  height: 1px;
  margin-block: clamp(24px, 4vw, 48px);
  border: 0;
  background: linear-gradient(90deg, var(--cyan), var(--line) 35%, transparent);
}

.ng-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  background: var(--cyan);
  border: 1px solid var(--cyan);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.ng-btn:hover {
  background: var(--paper);
  border-color: var(--paper);
  transform: translateY(-2px);
}

.ng-btn:active {
  background: var(--cyan-deep);
  border-color: var(--cyan-deep);
  transform: translateY(0);
}

.ng-btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--paper);
}

.ng-btn--ghost:hover {
  background: var(--ink-3);
  border-color: var(--cyan);
  color: var(--cyan);
}

.ng-btn--amber {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}

.ng-btn--amber:hover {
  background: var(--paper);
  border-color: var(--paper);
}

.ng-btn--small {
  min-height: 38px;
  padding: 0 14px;
  font-size: 12px;
}

.ng-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 30px);
  background: linear-gradient(160deg, var(--ink-3), var(--ink-2) 52%, var(--ink-2));
  border-top: 2px solid var(--cyan);
}

.ng-panel::after {
  content: "";
  position: absolute;
  top: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  border: 1px solid rgba(47, 232, 184, 0.16);
  transform: rotate(12deg);
  pointer-events: none;
}

.ng-panel--amber {
  border-top-color: var(--amber);
}

.ng-panel--violet {
  border-top-color: var(--violet);
}

.ng-panel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.ng-panel__title {
  margin: 0;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.ng-panel__meta {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.ng-data {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.ng-data__value {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.ng-data__label {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.ng-table-wrap {
  width: 100%;
  overflow-x: auto;
  border-top: 1px solid var(--line);
}

.ng-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.5;
}

.ng-table caption {
  padding: 12px 10px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-align: left;
}

.ng-table th {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-align: left;
  white-space: nowrap;
}

.ng-table td {
  padding: 14px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

.ng-table tbody tr {
  transition: background-color 0.18s var(--ease);
}

.ng-table tbody tr:hover {
  background: var(--ink-3);
}

.ng-table__num {
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.ng-table__rank {
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 1.15em;
  font-variant-numeric: tabular-nums;
}

.ng-tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.12em;
  text-decoration: none;
  white-space: nowrap;
}

.ng-tag--cyan {
  border-color: var(--cyan);
  color: var(--cyan);
}

.ng-tag--amber {
  border-color: var(--amber);
  color: var(--amber);
}

.ng-tag--violet {
  border-color: var(--violet);
  color: var(--violet);
}

.ng-tag--coral {
  border-color: var(--coral);
  color: var(--coral);
}

.ng-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--paper);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.ng-status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.ng-status--fit {
  color: var(--cyan);
}

.ng-status--out {
  color: var(--coral);
}

.ng-status--doubt {
  color: var(--amber);
}

.ng-band {
  position: relative;
  overflow: hidden;
  background: var(--ink-2);
  border-block: 1px solid var(--line);
  transform: skewX(-10deg);
}

.ng-band__inner {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 38px);
  padding: 12px clamp(20px, 4vw, 48px);
  transform: skewX(10deg);
  transition: transform 0.24s var(--ease);
  pointer-events: auto;
}

.ng-band:hover .ng-band__inner {
  transform: skewX(10deg) translateX(6px);
}

.ng-band__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--paper);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--ease);
}

.ng-band__link:hover {
  color: var(--cyan);
}

.ng-band__link[aria-current="page"] {
  color: var(--amber);
}

.ng-breadcrumb {
  padding-block: 16px;
  border-bottom: 1px solid var(--line);
}

.ng-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.ng-breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.ng-breadcrumb__item + .ng-breadcrumb__item::before {
  content: "/";
  color: var(--line-strong);
}

.ng-breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
}

.ng-breadcrumb__link:hover {
  color: var(--cyan);
}

.ng-breadcrumb__link[aria-current="page"] {
  color: var(--paper);
}

.ng-toc {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.ng-toc__list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ng-toc__link {
  display: block;
  padding: 7px 10px;
  border-left: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.ng-toc__link:hover {
  color: var(--paper);
}

.ng-toc__link[aria-current="location"] {
  border-left-color: var(--cyan);
  background: rgba(47, 232, 184, 0.08);
  color: var(--cyan);
}

.media-frame {
  position: relative;
  isolate: isolate;
  overflow: hidden;
  min-height: 200px;
  background:
    radial-gradient(circle at 72% 18%, rgba(47, 232, 184, 0.18), transparent 34%),
    linear-gradient(135deg, var(--ink-3) 0%, var(--ink-2) 44%, var(--ink) 100%);
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    repeating-linear-gradient(115deg, transparent 0 38px, rgba(241, 245, 240, 0.045) 38px 39px),
    radial-gradient(circle at 18% 82%, rgba(255, 176, 58, 0.14), transparent 30%);
  pointer-events: none;
}

.media-frame::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1;
  height: 45%;
  background: linear-gradient(0deg, rgba(10, 13, 12, 0.88), transparent);
  pointer-events: none;
}

.media-frame__img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__caption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  margin: 0;
  padding: 14px 18px;
  background: linear-gradient(0deg, rgba(10, 13, 12, 0.9), transparent);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.06em;
}

.media-frame--wide {
  aspect-ratio: 16 / 9;
}

.media-frame--tall {
  aspect-ratio: 3 / 4;
}

.media-frame--square {
  aspect-ratio: 1 / 1;
}

.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}

[data-reveal] {
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}

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

.ng-progress {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 400;
  height: 3px;
  background: rgba(241, 245, 240, 0.06);
  pointer-events: none;
}

.ng-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.ng-to-top {
  position: fixed;
  right: 18px;
  bottom: calc(82px + env(safe-area-inset-bottom, 0px));
  z-index: 220;
  display: grid;
  width: 48px;
  height: 48px;
  border: 1px solid var(--cyan);
  background: var(--ink-2);
  color: var(--cyan);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.18s var(--ease), visibility 0.18s var(--ease), transform 0.18s var(--ease), background-color 0.18s var(--ease);
  place-items: center;
  pointer-events: none;
}

.ng-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
}

.ng-to-top:hover {
  background: var(--cyan);
  color: var(--ink);
}

.ng-to-top::before {
  content: "↑";
  font-size: 18px;
  line-height: 1;
}

.ng-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(56px, 9vw, 120px);
  background: var(--ink-2);
  border-top: 1px solid var(--line);
}

.ng-footer__band {
  height: clamp(32px, 5vw, 56px);
  background: linear-gradient(90deg, var(--ink-3), var(--ink-2) 58%, var(--ink));
  clip-path: polygon(0 0, 100% 0, 100% 54%, 0 100%);
}

.ng-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.5fr);
  gap: clamp(28px, 5vw, 72px);
  width: 100%;
  max-width: 1360px;
  margin-inline: auto;
  padding: clamp(32px, 5vw, 64px) clamp(20px, 4vw, 64px) clamp(24px, 4vw, 40px);
}

.ng-footer__brand {
  min-width: 0;
}

.ng-footer__logo {
  display: inline-block;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.ng-footer__logo:hover {
  color: var(--cyan);
}

.ng-footer__tag {
  margin: 14px 0 0;
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.ng-footer__note {
  max-width: 46ch;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.ng-footer__columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 32px);
}

.ng-footer__col {
  min-width: 0;
}

.ng-footer__col-title {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
}

.ng-footer__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ng-footer__link {
  display: inline-block;
  color: var(--paper);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.ng-footer__link:hover {
  color: var(--cyan);
  transform: translateX(3px);
}

.ng-footer__contact {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px 28px;
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 1px solid var(--line);
}

.ng-footer__contact-line {
  margin: 0;
  color: var(--paper);
  font-size: 13px;
  line-height: 1.6;
}

.ng-footer__contact-label {
  display: block;
  margin-bottom: 2px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.ng-footer__contact .ng-footer__note {
  grid-column: 1 / -1;
  max-width: 70ch;
  margin: 0;
}

.ng-footer__legal {
  background: rgba(10, 13, 12, 0.55);
  border-top: 1px solid var(--line);
}

.ng-footer__legal-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  max-width: 1360px;
  margin-inline: auto;
  padding: 16px clamp(20px, 4vw, 64px);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.ng-footer__legal-sep {
  color: var(--line-strong);
}

.ng-footer__link--legal {
  color: var(--muted);
  font-size: 12px;
}

.ng-footer__link--legal:hover {
  color: var(--cyan);
}

@media (max-width: 900px) {
  .ng-footer__inner {
    grid-template-columns: 1fr;
  }

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

  .ng-footer__contact {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .ng-footer__columns {
    grid-template-columns: 1fr 1fr;
  }

  .ng-footer__contact {
    grid-template-columns: 1fr;
  }

  .ng-footer__legal-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

@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;
    scroll-behavior: auto !important;
  }

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

  .ng-band:hover .ng-band__inner {
    transform: skewX(10deg);
  }
}