:root {
  --color-bg: #23486E;
  --color-panel: #2C567F;
  --color-panel-raised: #35618D;
  --color-border: #446A93;
  --color-accent: #1E6FE8;
  --color-accent-dark: #1554B4;
  --color-accent-soft: #9CC4F5;
  --color-text: #F4F8FC;
  --color-text-muted: #B9CDE0;
  --color-success: #2EC5A8;
  --color-warning: #F5A65B;
  --color-error: #F07A6A;
  --color-paper: #FFFFFF;
  --color-paper-alt: #EAF1F7;
  --color-ink: #22344C;
  --color-ink-muted: #6B7F96;
  --color-flag-red: #CE3B47;
  --color-flag-navy: #2B4380;
  --color-flag-blue: #2E5AA8;
  --color-transparent: transparent;
  --color-overlay: rgba(12, 28, 48, .72);
  --color-overlay-soft: rgba(20, 38, 60, .55);
  --color-shadow-board: rgba(12, 28, 48, .45);
  --color-shadow-panel: rgba(12, 28, 48, .30);
  --color-shadow-paper: rgba(16, 32, 54, .32);
  --color-shadow-paper-soft: rgba(16, 32, 54, .22);
  --color-shadow-button: rgba(21, 84, 180, .40);
  --color-success-ring: rgba(46, 197, 168, .28);
  --color-accent-ring: rgba(30, 111, 232, .18);
  --color-warning-ring: rgba(245, 166, 91, .30);
  --color-board-middle: #7FB98C;
  --color-waybill-rule: #C9D5E3;
  --color-flag-border: #D5DEE9;
  --color-belt: #B9C8D9;
  --font-display: Georgia, 'Times New Roman', 'Songti SC', 'Noto Serif CJK SC', SimSun, serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --radius-xs: 4px;
  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 14px;
  --radius-pill: 999px;
  --shadow-board: 0 24px 60px var(--color-shadow-board), 0 4px 14px var(--color-shadow-panel);
  --shadow-waybill: 0 16px 36px var(--color-shadow-paper), 0 2px 8px var(--color-shadow-paper-soft);
  --shadow-button: 0 6px 18px var(--color-shadow-button);
  --header-height: 72px;
  --content-max: 1320px;
  --reading-max: 56rem;
  --gutter: 32px;
  --section-space: 88px;
  --toc-offset: 88px;
  --belt-travel: 404px;
  --transition-fast: 150ms ease;
  --transition-reveal: 520ms ease;
}

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

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--color-bg);
}

html.nav-open {
  overflow: hidden;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: clip;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main,
section,
article,
aside,
header,
footer,
nav,
div {
  min-width: 0;
}

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

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

button,
a {
  -webkit-tap-highlight-color: var(--color-transparent);
}

button {
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3,
h4,
ul,
ol,
dl,
dd,
blockquote,
pre,
figure {
  margin-top: 0;
}

ul,
ol {
  padding-left: 1.25rem;
}

code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
}

code {
  overflow-wrap: anywhere;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-s);
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 1.1rem;
  -webkit-overflow-scrolling: touch;
}

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

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

.wrap,
.reading-wrap {
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wrap {
  max-width: var(--content-max);
}

.reading-wrap {
  max-width: calc(var(--reading-max) + (var(--gutter) * 2));
}

.section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
  overflow-x: clip;
}

.section-compact {
  padding-top: calc(var(--section-space) * .6);
  padding-bottom: calc(var(--section-space) * .6);
  overflow-x: clip;
}

.section-band {
  background: var(--color-panel);
  border-block: 1px solid var(--color-border);
}

.eyebrow,
.badge,
.tag {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  max-width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  padding: .42rem .82rem;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .04em;
  overflow-wrap: anywhere;
}

.badge-dot,
.status-dot {
  width: .45rem;
  height: .45rem;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-success);
}

.badge-warning .badge-dot {
  background: var(--color-warning);
}

h1,
h2,
h3,
h4 {
  color: var(--color-text);
  line-height: 1.18;
  text-wrap: balance;
}

h1,
.display-title {
  font-family: var(--font-display);
  font-size: clamp(52px, 5vw, 72px);
  font-weight: 700;
  letter-spacing: .01em;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.2vw, 3.35rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  margin-bottom: .7rem;
}

.title-accent {
  color: var(--color-accent-soft);
}

.nowrap-term {
  white-space: nowrap;
}

.lead {
  max-width: 48rem;
  color: var(--color-text-muted);
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  line-height: 1.75;
}

.muted {
  color: var(--color-text-muted);
}

.mono {
  font-family: var(--font-mono);
}

.panel,
.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  background: var(--color-panel);
}

.panel {
  padding: clamp(1.2rem, 3vw, 2rem);
}

.card {
  padding: 1.35rem;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 1.25rem;
}

.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));
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  border: 1px solid var(--color-transparent);
  border-radius: var(--radius-s);
  padding: .78rem 1.45rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn svg {
  width: 1.05rem;
  height: 1.05rem;
  flex: 0 0 auto;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-text);
  box-shadow: var(--shadow-button);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  border-color: var(--color-border);
  background: var(--color-transparent);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-accent-soft);
  background: var(--color-panel);
}

.btn-disabled,
.btn:disabled {
  border-color: var(--color-border);
  background: var(--color-panel);
  color: var(--color-text-muted);
  box-shadow: none;
  cursor: not-allowed;
  opacity: .7;
}

.site-head {
  position: sticky;
  top: 0;
  z-index: 80;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.head-inner {
  position: relative;
  display: flex;
  width: 100%;
  max-width: var(--content-max);
  min-height: var(--header-height);
  align-items: center;
  gap: 1.5rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: .65rem;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
}

.brand-copy {
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
  white-space: nowrap;
}

.brand-name {
  color: var(--color-text);
  font-size: 1.18rem;
  font-weight: 750;
  letter-spacing: .02em;
}

.brand-local {
  color: var(--color-text-muted);
  font-size: .82rem;
  font-weight: 500;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: .22rem;
}

.desktop-nav a {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  border-radius: var(--radius-pill);
  padding: .45rem .8rem;
  color: var(--color-text-muted);
  font-size: .88rem;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.desktop-nav a:hover {
  color: var(--color-text);
}

.desktop-nav a.is-active {
  background: var(--color-panel-raised);
  color: var(--color-text);
  font-weight: 650;
}

.head-tools {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: .6rem;
  margin-left: auto;
}

.lang-control {
  position: relative;
}

.lang-button,
.menu-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-transparent);
  border-radius: var(--radius-s);
  background: var(--color-transparent);
  color: var(--color-text-muted);
  cursor: pointer;
}

.lang-button {
  gap: .4rem;
  padding-inline: .65rem;
  font-size: .84rem;
}

.lang-button:hover,
.menu-button:hover {
  border-color: var(--color-border);
  color: var(--color-text);
}

.lang-menu {
  position: absolute;
  top: calc(100% + .55rem);
  right: 0;
  z-index: 95;
  display: none;
  width: 10.5rem;
  padding: .4rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-s);
  background: var(--color-panel);
  box-shadow: var(--shadow-waybill);
}

.lang-control.is-open .lang-menu {
  display: block;
}

.lang-menu a {
  display: flex;
  min-height: 44px;
  align-items: center;
  width: 100%;
  border-radius: var(--radius-xs);
  padding: .6rem .7rem;
  color: var(--color-text-muted);
}

.lang-menu a:hover,
.lang-menu a.is-current {
  background: var(--color-panel-raised);
  color: var(--color-text);
}

.login-button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-s);
  background: var(--color-panel);
  color: var(--color-text);
  padding: .55rem 1.15rem;
  font-size: .9rem;
  font-weight: 650;
}

.login-button:hover {
  border-color: var(--color-accent-soft);
  background: var(--color-panel-raised);
}

.menu-button {
  display: none;
  min-width: 44px;
  padding: 0;
}

.menu-button svg {
  width: 22px;
  height: 22px;
}

.mobile-drawer {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 92;
  display: none;
  width: 100%;
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  overscroll-behavior: contain;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: .75rem var(--gutter) 1.1rem;
}

.mobile-drawer.is-open {
  display: block;
}

.mobile-drawer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.mobile-drawer a {
  display: flex;
  min-height: 48px;
  align-items: center;
  width: 100%;
  border-radius: var(--radius-s);
  padding: .7rem .85rem;
  color: var(--color-text-muted);
}

.mobile-drawer a:hover,
.mobile-drawer a.is-active {
  background: var(--color-panel-raised);
  color: var(--color-text);
}

.mobile-languages {
  margin-top: .65rem;
  padding-top: .65rem;
  border-top: 1px solid var(--color-border);
}

.nav-veil {
  position: fixed;
  inset: var(--header-height) 0 0;
  z-index: 70;
  display: none;
  background: var(--color-overlay);
}

.nav-veil.is-open {
  display: block;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-panel);
}

.footer-inner {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 4rem var(--gutter) 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand p {
  max-width: 27rem;
  color: var(--color-text-muted);
}

.footer-title {
  margin-bottom: .9rem;
  color: var(--color-text);
  font-size: .82rem;
  font-weight: 750;
  letter-spacing: .1em;
}

.footer-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  display: inline-flex;
  padding-block: .3rem;
  color: var(--color-text-muted);
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: .82rem;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.reveal {
  transition: opacity var(--transition-reveal), transform var(--transition-reveal);
}

.reveal.pending {
  opacity: 0;
  transform: translateY(16px);
}

.reveal.shown {
  opacity: 1;
  transform: none;
}

.hero {
  position: relative;
  overflow-x: clip;
}

.hero::before {
  content: "";
  position: absolute;
  width: 920px;
  height: 920px;
  left: -360px;
  bottom: -520px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-panel-raised) 0%, var(--color-transparent) 68%);
  opacity: .55;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  right: -200px;
  top: -260px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  opacity: .5;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  max-width: var(--content-max);
  min-height: calc(100vh - 128px);
  grid-template-columns: minmax(520px, 600px) minmax(0, 1fr);
  align-items: center;
  gap: 72px;
  margin-inline: auto;
  padding: 52px var(--gutter) 64px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 560px;
}

.hero-copy h1 {
  margin: 22px 0 18px;
  font-size: 56px;
}

.hero-sub {
  margin-bottom: 30px;
  color: var(--color-text-muted);
  font-size: 1.03rem;
  line-height: 1.75;
}

.hero-sub strong {
  color: var(--color-text);
}

.cta-row,
.trust-row,
.platform-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.cta-row {
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.trust-row {
  gap: 1.35rem;
  margin-bottom: 1.85rem;
  color: var(--color-text-muted);
  font-size: .88rem;
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: .42rem;
}

.trust-item svg {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  color: var(--color-success);
}

.platforms {
  padding-top: 1.2rem;
  border-top: 1px solid var(--color-border);
}

.platforms-label {
  margin-bottom: .8rem;
  color: var(--color-text-muted);
  font-size: .75rem;
  letter-spacing: .16em;
}

.platform-row {
  gap: 1.35rem;
}

.platform {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--color-text-muted);
  font-size: .82rem;
}

.platform svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.board {
  position: relative;
  display: flex;
  min-height: 540px;
  flex-direction: column;
  justify-content: center;
  padding: 26px 26px 30px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  background: linear-gradient(146deg, var(--color-success) 0%, var(--color-board-middle) 46%, var(--color-warning) 100%);
  box-shadow: var(--shadow-board);
}

.board-tag {
  position: absolute;
  top: 16px;
  left: 18px;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  border-radius: var(--radius-pill);
  background: var(--color-overlay-soft);
  color: var(--color-text);
  padding: .35rem .75rem;
  font-size: .75rem;
  letter-spacing: .08em;
}

.board-tag .dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 3px var(--color-success-ring);
}

.board-no {
  position: absolute;
  top: 18px;
  right: 20px;
  color: var(--color-overlay-soft);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
}

.waybill {
  position: relative;
  margin-top: 26px;
  padding: 22px 24px 26px;
  border-radius: var(--radius-m);
  background: var(--color-paper);
  color: var(--color-ink);
  box-shadow: var(--shadow-waybill);
  transform: rotate(-1.4deg);
}

.wb-top {
  display: flex;
  align-items: center;
  gap: .85rem;
  padding-bottom: .9rem;
  border-bottom: 1px dashed var(--color-waybill-rule);
}

.wb-seal {
  display: flex;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-accent-dark);
  border-radius: 50%;
  color: var(--color-accent-dark);
}

.wb-seal svg {
  width: 22px;
  height: 22px;
}

.wb-id {
  min-width: 0;
}

.wb-no-label {
  display: block;
  margin-bottom: .18rem;
  color: var(--color-ink-muted);
  font-size: .68rem;
  letter-spacing: .14em;
}

.wb-no {
  display: block;
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 1.16rem;
  font-weight: 700;
  letter-spacing: .05em;
  overflow-wrap: anywhere;
}

.wb-barcode {
  width: 86px;
  height: 34px;
  flex: 0 0 auto;
  margin-left: auto;
  border-radius: 2px;
  background: repeating-linear-gradient(90deg, var(--color-ink) 0 2px, var(--color-transparent) 2px 5px, var(--color-ink) 5px 6px, var(--color-transparent) 6px 10px, var(--color-ink) 10px 13px, var(--color-transparent) 13px 16px);
  opacity: .82;
}

.wb-fields {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1.1rem;
  padding: 1rem 0 .4rem;
}

.wb-field-label {
  margin-bottom: .35rem;
  color: var(--color-ink-muted);
  font-size: .7rem;
  letter-spacing: .12em;
}

.wb-field-value {
  display: flex;
  align-items: center;
  gap: .48rem;
  color: var(--color-ink);
  font-size: 1.02rem;
  font-weight: 700;
}

.origin-dot {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-ring);
}

.wb-field-sub {
  margin-top: .2rem;
  color: var(--color-ink-muted);
  font-size: .72rem;
}

.docks {
  padding-top: .85rem;
}

.dock-row {
  display: flex;
  justify-content: space-between;
  gap: .4rem;
}

.dock {
  display: flex;
  min-width: 58px;
  flex-direction: column;
  align-items: center;
  gap: .35rem;
}

.dock-flag {
  display: block;
  width: 40px;
  height: 27px;
  overflow: hidden;
  border: 1px solid var(--color-flag-border);
  border-radius: 5px;
  box-shadow: 0 1px 3px var(--color-shadow-paper-soft);
}

.dock-flag svg {
  width: 100%;
  height: 100%;
}

.dock-name {
  color: var(--color-ink);
  font-size: .72rem;
  font-weight: 650;
}

.dock-code {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: .61rem;
  letter-spacing: .06em;
}

.belt {
  position: relative;
  height: 14px;
  margin-top: 1rem;
}

.belt-line {
  position: absolute;
  top: 6px;
  right: 2px;
  left: 2px;
  border-top: 2px dashed var(--color-belt);
}

.belt-dot {
  position: absolute;
  top: 1px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-warning);
  box-shadow: 0 0 0 4px var(--color-warning-ring), 0 0 10px var(--color-warning);
  animation: belt-run 6s linear infinite;
}

@keyframes belt-run {
  0% {
    opacity: 0;
    transform: translateX(0);
  }
  7%,
  93% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateX(var(--belt-travel));
  }
}

.stats-band {
  border-top: 1px solid var(--color-border);
  background: var(--color-panel);
}

.stats-inner {
  display: flex;
  max-width: var(--content-max);
  align-items: center;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-inline: auto;
  padding: 1.6rem var(--gutter);
}

.stat {
  display: flex;
  align-items: baseline;
  gap: .6rem;
}

.stat-num {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
}

.stat-label {
  color: var(--color-text-muted);
  font-size: .8rem;
}

.prose {
  color: var(--color-text-muted);
}

.prose h2,
.prose h3,
.prose strong {
  color: var(--color-text);
}

.prose p,
.prose li {
  overflow-wrap: anywhere;
}

.prose a {
  color: var(--color-accent-soft);
  text-decoration: underline;
  text-underline-offset: .18em;
}

.prose table {
  border-collapse: collapse;
}

.prose > .data-table {
  display: block;
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

body:has(.toc-tabs) section[id] {
  scroll-margin-top: var(--toc-offset);
}

@media (max-width: 1160px) {
  :root {
    --belt-travel: 330px;
  }

  .desktop-nav a {
    padding-inline: .58rem;
    font-size: .82rem;
  }

  .hero-inner {
    grid-template-columns: minmax(440px, 520px) minmax(0, 1fr);
    gap: 44px;
  }

  .hero-copy h1 {
    font-size: 52px;
  }
}

@media (max-width: 960px) {
  :root {
    --belt-travel: 300px;
  }

  .desktop-nav,
  .desktop-language {
    display: none;
  }

  .head-tools {
    margin-left: auto;
  }

  .menu-button {
    display: inline-flex;
  }

  .hero-inner {
    min-height: 0;
    grid-template-columns: minmax(0, 1fr);
    gap: 48px;
    padding-top: 44px;
  }

  .hero-copy {
    order: 1;
    max-width: 640px;
  }

  .board {
    order: 2;
    width: 100%;
    max-width: 560px;
    min-height: 0;
    padding-top: 56px;
  }

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

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

@media (max-width: 768px) {
  :root {
    --gutter: 20px;
    --section-space: 64px;
    --toc-offset: 80px;
  }

  h1,
  .display-title,
  .hero-copy h1 {
    font-size: clamp(28px, 9vw, 40px);
    line-height: 1.12;
    letter-spacing: 0;
  }

  h2 {
    font-size: clamp(1.8rem, 8vw, 2.55rem);
  }

  .brand-local {
    display: none;
  }

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

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .board-no {
    display: none;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
    --belt-travel: 200px;
  }

  body {
    overflow-x: clip;
  }

  .wrap,
  .reading-wrap,
  .head-inner,
  .footer-inner,
  .hero-inner,
  .stats-inner {
    padding-inline: var(--gutter);
  }

  .tilt,
  .waybill {
    transform: none;
  }

  .lang-button {
    display: none;
  }

  .login-button {
    min-width: 66px;
    padding-inline: .75rem;
  }

  .hero-inner {
    gap: 2.5rem;
    padding-top: 36px;
    padding-bottom: 48px;
  }

  .hero-sub {
    font-size: .96rem;
    margin-bottom: 1.25rem;
  }

  .cta-row {
    align-items: stretch;
  }

  .cta-row .btn {
    flex: 1 1 9rem;
  }

  .trust-row {
    gap: .75rem 1rem;
  }

  .platform-row {
    gap: .8rem 1.1rem;
  }

  .board {
    padding-inline: 14px;
    padding-bottom: 20px;
  }

  .waybill {
    padding: 18px 14px 20px;
  }

  .wb-top {
    align-items: flex-start;
  }

  .wb-barcode {
    display: none;
  }

  .wb-no {
    font-size: .91rem;
  }

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

  .dock-row {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: .8rem;
  }

  .dock {
    min-width: calc(20% - .7rem);
  }

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

  .footer-inner {
    padding-top: 3rem;
  }

  .stats-inner {
    gap: 1rem 1.5rem;
  }
}

@media (max-width: 380px) {
  .brand-name {
    font-size: 1rem;
  }

  .head-inner {
    gap: .35rem;
  }

  .head-tools {
    gap: .3rem;
  }

  .login-button {
    min-width: 58px;
  }

  .dock {
    min-width: calc(33.333% - .6rem);
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .reveal,
  .reveal.pending {
    opacity: 1;
    transform: none;
  }

  .belt-dot {
    opacity: 1;
    transform: translateX(var(--belt-travel));
  }
}