/* SELLERTAB — design system
 *
 * Every token here is measured off the approved hero artboard
 * (art-source/sellertab/hero-artboard.html): near-black ground, one cool blue
 * accent, hairline rules instead of cards, square corners everywhere, and four
 * typefaces with one job each. Nothing is imported from another site in this
 * repository, and nothing here may be.
 */

/* ---------------------------------------------------------------- faces --
 * Self-hosted so the page makes no third-party request and the first paint
 * needs nothing but this stylesheet. Latin and latin-ext only; the Chinese
 * mirror falls back to the reader's system CJK face, declared further down.
 */

@font-face {
  font-family: "Archivo Black";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/archivo-black-400-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+2000-206F, U+2122, U+2212, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Archivo Black";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/archivo-black-400-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+1E00-1E9F, U+2020, U+20A0-20AB,
    U+2113, U+A720-A7FF;
}
@font-face {
  font-family: "Bebas Neue";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/bebas-neue-400-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+2000-206F, U+2122, U+2212, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Bebas Neue";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/bebas-neue-400-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+1E00-1E9F, U+2020, U+20A0-20AB,
    U+2113, U+A720-A7FF;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/ibm-plex-mono-400-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+2000-206F, U+2122, U+2212, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/ibm-plex-mono-400-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+1E00-1E9F, U+2020, U+20A0-20AB,
    U+2113, U+A720-A7FF;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/ibm-plex-mono-500-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+2000-206F, U+2122, U+2212, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/ibm-plex-mono-500-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+1E00-1E9F, U+2020, U+20A0-20AB,
    U+2113, U+A720-A7FF;
}
/* Public Sans ships as one variable file per subset — 400 to 700 come out of
 * the same bytes, so the weight range is declared rather than four faces. */
@font-face {
  font-family: "Public Sans";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("assets/fonts/public-sans-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+2000-206F, U+2122, U+2212, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Public Sans";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("assets/fonts/public-sans-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+1E00-1E9F, U+2020, U+20A0-20AB,
    U+2113, U+A720-A7FF;
}

/* --------------------------------------------------------------- tokens -- */

:root {
  --ink: #08090a;
  --paper: #fafafa;
  --accent: #7da2d0;
  --accent-dim: rgba(125, 162, 208, 0.8);

  /* One hairline weight carries the whole layout. Grids are drawn by letting
   * this colour show through a 1px gap between cells, not by bordering each. */
  --line: rgba(250, 250, 250, 0.18);
  --line-soft: rgba(250, 250, 250, 0.09);

  --muted: rgba(250, 250, 250, 0.85);
  --quiet: rgba(250, 250, 250, 0.6);
  --faint: rgba(250, 250, 250, 0.45);
  --dim: rgba(250, 250, 250, 0.4);

  --sans: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica,
    Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --display: "Bebas Neue", "Public Sans", Impact, sans-serif;
  --word: "Archivo Black", "Public Sans", Helvetica, Arial, sans-serif;

  --display-tracking: 0.005em;
  --display-leading: 0.88;

  --gutter: clamp(20px, 3.6vw, 44px);
  --max: 1440px;
  --section-gap: clamp(64px, 8vw, 128px);
  --brand-mark-size: 46px;
  --brand-lockup-gap: 9px;
  --hero-copy-lift: clamp(18px, 1.6vw, 28px);
  --hero-actions-offset: clamp(8px, 0.8vw, 12px);
  --contact-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);

  --slot-weave: repeating-linear-gradient(
    -45deg,
    rgba(250, 250, 250, 0.055) 0 14px,
    rgba(250, 250, 250, 0.02) 14px 28px
  );
}

/* The Chinese mirror has no Bebas Neue or Archivo Black to fall back on — no
 * condensed display face covers Han. It gets a heavy system CJK stack instead,
 * set a size down and with normal leading, because dense glyphs at 0.88 line
 * height collide. */
html[lang^="zh"] {
  --display: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --word: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --sans: "Public Sans", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
    "Microsoft YaHei", -apple-system, sans-serif;
  --display-tracking: 0.01em;
  --display-leading: 1.08;
}

/* ----------------------------------------------------------------- base -- */

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

html {
  scroll-behavior: smooth;
  /* The header is sticky; anchors must not land underneath it. */
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.18s ease, color 0.18s ease;
}

a:hover {
  opacity: 0.72;
}

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

p {
  margin: 0;
}

figure {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.shell {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding-left: max(var(--gutter), env(safe-area-inset-left, 0px));
  padding-right: max(var(--gutter), env(safe-area-inset-right, 0px));
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--accent);
  color: var(--ink);
  padding: 12px 20px;
  font: 700 11px/1 var(--sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

/* ------------------------------------------------------------ lettering -- */

.display {
  font-family: var(--display);
  font-weight: 400;
  line-height: var(--display-leading);
  letter-spacing: var(--display-tracking);
  margin: 0;
  text-wrap: balance;
}

html[lang^="zh"] .display {
  font-weight: 700;
}

/* One or two words per heading carry the accent. Used as <b> so the emphasis
 * survives with styles off, and the weight is inherited so only colour moves. */
.display b {
  font-weight: inherit;
  color: var(--accent);
}

.kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}

.kicker::before {
  content: "";
  flex: none;
  width: 38px;
  height: 2px;
  background: var(--accent);
}

.meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--dim);
}

.num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.lede {
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.65;
  color: var(--muted);
  max-width: 62ch;
}

/* ---------------------------------------------------------------- brand -- */

.brand {
  display: flex;
  align-items: center;
  gap: var(--brand-lockup-gap);
}

.brand:hover {
  opacity: 1;
}

.brand-mark {
  width: var(--brand-mark-size);
  height: var(--brand-mark-size);
  flex: none;
  color: var(--paper);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.brand-word {
  font-family: var(--word);
  font-size: 19px;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
}

.brand-word b {
  font-weight: inherit;
  color: var(--accent);
}

/* The strapline sits between two rules that grow to the wordmark's width. */
.brand-rule {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--faint);
}

.brand-rule::before,
.brand-rule::after {
  content: "";
  flex: 1;
  min-width: 4px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.brand-rule span {
  font-family: var(--mono);
  font-size: 7px;
  font-weight: 500;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* --------------------------------------------------------------- header -- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding-top: env(safe-area-inset-top, 0px);
  background: rgba(8, 9, 10, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 22px;
}

.nav {
  display: flex;
  gap: clamp(18px, 2.2vw, 32px);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--quiet);
}

.header-side {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.6vw, 22px);
}

.lang {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--quiet);
  white-space: nowrap;
}

.lang [aria-current] {
  color: var(--paper);
}

.lang span {
  opacity: 0.4;
  padding-inline: 3px;
}

.menu-toggle {
  display: none;
  flex: none;
  width: 42px;
  height: 42px;
  padding: 0;
  background: none;
  border: 1px solid var(--line);
  color: var(--paper);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* -------------------------------------------------------------- buttons -- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 32px;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-align: center;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease,
    color 0.18s ease;
}

.btn:hover {
  opacity: 1;
}

.btn--solid {
  background: var(--accent);
  color: var(--ink);
}

.btn--solid:hover {
  background: var(--paper);
}

.btn--ghost {
  border-color: rgba(250, 250, 250, 0.45);
  color: var(--paper);
}

.btn--ghost:hover {
  border-color: var(--paper);
  background: rgba(250, 250, 250, 0.06);
}

.btn--compact {
  padding: 13px 26px;
}

.btn--inline {
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--accent);
  color: var(--accent);
  letter-spacing: 0.14em;
  padding-bottom: 4px;
}

.btn--inline:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.btn[disabled] {
  cursor: progress;
  opacity: 0.6;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ----------------------------------------------------------- image slot --
 * Art direction rule: until a photograph exists the page shows a slot that
 * states the code, the target size, the target path and the brief, drawn in
 * the site's own style. Never a grey box, never a stock stand-in.
 */

.slot {
  position: relative;
  /* Queried below: the two corner tags collide once the slot is narrow, which
   * happens by column width rather than by viewport width. */
  container-type: inline-size;
  background: var(--slot-weave);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(20px, 3vw, 44px);
  overflow: hidden;
}

.slot__tag {
  position: absolute;
  top: 22px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  pointer-events: none;
}

.slot__tag--code {
  left: 22px;
  color: var(--accent-dim);
}

.slot__tag--place {
  right: 22px;
  color: var(--faint);
  text-align: right;
}

.slot__brief {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.7;
  color: var(--dim);
  max-width: 68ch;
}

/* A slot previews the crop it will be replaced by, so the page never reflows
 * when the photograph lands. Ratios match the target sizes in the briefs. */
@container (max-width: 620px) {
  .slot__tag--place {
    display: none;
  }
}

.slot--wide {
  aspect-ratio: 28 / 10;
}

.slot--band {
  aspect-ratio: 8 / 3;
}

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

.slot--square {
  aspect-ratio: 1 / 1;
}

.slot--landscape {
  aspect-ratio: 5 / 3;
}

/* Below this the brief is taller than the crop; height follows the text
 * instead, which keeps the words readable rather than clipped. */
@media (max-width: 860px) {
  .slot--wide,
  .slot--band,
  .slot--tall,
  .slot--square,
  .slot--landscape,
  .shot .slot {
    aspect-ratio: auto;
    min-height: 260px;
  }
}

/* Finished artwork keeps the slot's measured crop without inheriting the
 * placeholder padding or its mobile text-height exception. The wrapper owns
 * the crop; the image can then stretch beside a taller argument without
 * distorting its pixels. */
.media {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink);
}

.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.media--wide {
  aspect-ratio: 28 / 10;
}

.media--operations {
  aspect-ratio: 1942 / 809;
}

.media--band {
  aspect-ratio: 8 / 3;
}

.media--documents {
  aspect-ratio: 1916 / 821;
}

.media--map {
  aspect-ratio: 1672 / 941;
  border: 0;
  background: transparent;
}

.media--map > img {
  object-fit: contain;
}

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

.media--portrait,
.media--company {
  aspect-ratio: 1023 / 1537;
}

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

.media--landscape {
  aspect-ratio: 5 / 3;
}

/* ----------------------------------------------------------------- hero -- */

.hero {
  padding-top: 8px;
}

.hero-plate {
  position: relative;
  min-height: clamp(520px, 62vw, 640px);
  justify-content: flex-end;
}

.hero-media {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 58% center;
}

/* The image was composed with negative space on the left; the scrim protects
 * contrast across short laptops and the denser Chinese heading without
 * flattening the lit receiving bay in the upper-right. */
.hero-plate::after {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(8, 9, 10, 0.94) 0%, rgba(8, 9, 10, 0.78) 44%, rgba(8, 9, 10, 0.18) 78%, rgba(8, 9, 10, 0.08) 100%),
    linear-gradient(0deg, rgba(8, 9, 10, 0.9) 0%, rgba(8, 9, 10, 0.48) 45%, rgba(8, 9, 10, 0.08) 78%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 820px;
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 1.8vw, 22px);
  margin-bottom: var(--hero-copy-lift);
}

.hero-copy .btn-row {
  margin-top: var(--hero-actions-offset);
}

.hero-title {
  font-size: clamp(52px, 9.2vw, 132px);
}

html[lang^="zh"] .hero-title {
  font-size: clamp(38px, 5.6vw, 82px);
}

.hero-lead {
  font-size: clamp(15px, 1.3vw, 17px);
  font-weight: 500;
  line-height: 1.6;
  max-width: 640px;
  color: var(--muted);
}

/* -------------------------------------------------- hairline cell grids --
 * The signature layout: a grid whose background is the hairline colour and
 * whose cells repaint the page ground, so a single pixel of gap reads as a
 * rule. One rule between cells, never two, and no borders to keep in sync.
 */

.grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.grid > * {
  background: var(--ink);
  padding: clamp(22px, 2.2vw, 30px) clamp(20px, 1.9vw, 26px);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.cell {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cell h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(20px, 1.8vw, 24px);
  letter-spacing: 0.06em;
  line-height: 1.1;
  margin: 0;
}

html[lang^="zh"] .cell h3 {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.cell p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--quiet);
}

/* The four-part index directly under the hero. */
.index-strip {
  margin-top: clamp(24px, 3vw, 36px);
}

/* -------------------------------------------------------------- marquee -- */

.marquee {
  margin-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  /* The band has to be spent before it reaches the edge of the screen, not at
   * it — a word cut off by the viewport reads as a bug rather than a fade. */
  --marquee-fade: linear-gradient(
    to right,
    transparent 0,
    transparent 3%,
    #000 22%,
    #000 78%,
    transparent 97%,
    transparent 100%
  );
  mask-image: var(--marquee-fade);
  -webkit-mask-image: var(--marquee-fade);
}

.marquee__track {
  display: flex;
  width: max-content;
  animation: st-marquee 42s linear infinite;
}

.marquee__run {
  display: flex;
  align-items: center;
  gap: 26px;
  padding: 14px 13px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
  white-space: nowrap;
}

.marquee__run i {
  font-style: normal;
  color: var(--accent-dim);
}

@keyframes st-marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .marquee__track {
    animation: none;
  }
  .marquee {
    mask-image: none;
    -webkit-mask-image: none;
    overflow-x: auto;
  }
}

/* -------------------------------------------------------------- section -- */

.section {
  padding-block: var(--section-gap);
  border-top: 1px solid var(--line-soft);
}

.section--flush {
  border-top: 0;
  padding-top: clamp(40px, 5vw, 72px);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 900px;
  margin-bottom: clamp(32px, 4vw, 56px);
}

.section-title {
  font-size: clamp(34px, 4.6vw, 64px);
}

html[lang^="zh"] .section-title {
  font-size: clamp(26px, 3.2vw, 44px);
}

.section-foot {
  margin-top: clamp(24px, 3vw, 36px);
}

/* A statement that closes a section, set apart by an accent rule. */
.closer {
  width: 100%;
  max-width: none;
  border-left: 2px solid var(--accent);
  padding-left: 20px;
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.5;
  color: var(--muted);
}

/* A condition the reader must not miss: full-width, quiet and easy to scan. */
.disclaimer {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  width: 100%;
  max-width: none;
  border: 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--faint);
}

.disclaimer::before {
  content: "i";
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font: 500 12px/1 var(--mono);
}

.caption {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--dim);
  margin-top: 14px;
}

/* ---------------------------------------------------------------- paths -- */

.paths .cell {
  gap: 16px;
  padding: clamp(26px, 2.8vw, 40px);
}

.path-label {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.path-title {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(24px, 2.4vw, 34px);
  line-height: 1.05;
  letter-spacing: 0.03em;
  margin: 0;
}

html[lang^="zh"] .path-title {
  font-weight: 700;
  line-height: 1.25;
}

.path-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

.path-list li {
  position: relative;
  padding-left: 22px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--quiet);
}

.path-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 1px;
  background: var(--accent);
}

.path-cta {
  margin-top: auto;
  padding-top: 12px;
  align-self: flex-start;
}

/* ---------------------------------------------------------------- steps -- */

.step {
  gap: 12px;
}

.step h3 {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.35;
  margin: 0;
}

.step p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--quiet);
}

/* ------------------------------------------------------------ directory -- */

.directory .cell {
  gap: 14px;
}

.directory h3 {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1.5;
  /* The longest region name runs to two lines; reserving them keeps all four
   * lists starting on the same baseline instead of one sitting a step low. */
  min-height: calc(11px * 1.5 * 2);
}

/* One platform per line. Wrapping them inline needs a separator, and a
 * separator that lands at a line end dangles — a column reads cleaner and
 * keeps multi-word names such as "Walmart Marketplace" unambiguous. */
.directory ul {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.directory li {
  font-size: 13px;
  line-height: 1.4;
  color: var(--quiet);
}

/* ------------------------------------------------------------ acceptance -- */

.panel {
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  padding: clamp(24px, 2.6vw, 34px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 84ch;
}

.panel h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(22px, 2vw, 28px);
  letter-spacing: 0.04em;
  line-height: 1.1;
  margin: 0;
}

html[lang^="zh"] .panel h3 {
  font-weight: 700;
  line-height: 1.3;
}

.panel p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--quiet);
}

/* --------------------------------------------------------------- models -- */

.model {
  gap: 14px;
  padding: clamp(26px, 2.8vw, 36px);
}

.model h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(22px, 2.1vw, 30px);
  letter-spacing: 0.04em;
  line-height: 1.05;
  margin: 0;
}

html[lang^="zh"] .model h3 {
  font-weight: 700;
  line-height: 1.25;
}

.model p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--quiet);
}

.tag {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 14px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ------------------------------------------------------------ support --- */

.support-group {
  gap: 16px;
  padding: clamp(26px, 2.8vw, 36px);
}

.support-group h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(21px, 1.9vw, 26px);
  letter-spacing: 0.05em;
  line-height: 1.1;
  margin: 0;
}

html[lang^="zh"] .support-group h3 {
  font-weight: 700;
  line-height: 1.3;
}

.support-group > p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* --------------------------------------------------------------- company -- */

/* A photograph and its caption as one column. In a stretched split the slot
 * gives up its own ratio and fills whatever height the other column sets, so
 * the two sides finish level instead of one trailing short. */
.shot {
  display: flex;
  flex-direction: column;
  min-width: 0;
  width: 100%;
}

/* By default the slot keeps whatever ratio its modifier gives it. Only in a
 * side-by-side split, and only while there is actually a column beside it,
 * does it give that up and stretch — see the wide-screen block below. */
.shot .slot,
.shot .media {
  flex: 0 0 auto;
}

@media (min-width: 1181px) {
  /* .split and .company set align-items: start further down, at the same
   * specificity, so the override has to out-rank them rather than rely on
   * source order. */
  .split.split--even,
  .company.split--even,
  .contact {
    align-items: stretch;
  }

  .split--even .shot,
  .contact .shot {
    height: 100%;
  }

  .split--even .slot,
  .contact .slot,
  .split--even .media,
  .contact .media {
    flex: 1 1 auto;
    aspect-ratio: auto;
    min-height: 320px;
  }

  .company--portrait {
    grid-template-columns: minmax(0, 1.22fr) minmax(360px, 0.78fr);
    align-items: stretch;
  }

  .company--portrait .company-shot {
    height: 100%;
  }

  .company--portrait .company-shot .media {
    flex: 1 1 auto;
    aspect-ratio: auto;
    min-height: 0;
  }

  .company--portrait .company-copy {
    display: flex;
    flex-direction: column;
    height: 100%;
  }

  .company--portrait .principles {
    flex: 1 1 auto;
    display: grid;
    grid-template-rows: repeat(4, minmax(0, 1fr));
  }

  .company--portrait .principle {
    align-items: center;
  }

  .company--portrait .principle:first-child {
    padding-top: 22px;
  }

  #sourcing .shot {
    position: relative;
  }

  #sourcing .shot .caption {
    position: absolute;
    z-index: 1;
    right: 1px;
    bottom: 1px;
    left: 1px;
    margin: 0;
    padding: 34px 18px 14px;
    background: linear-gradient(to bottom, transparent, rgba(8, 9, 10, 0.92));
  }
}

/* Two columns that hold a photograph beside its argument. */
.split,
.company {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(28px, 3.4vw, 56px);
  align-items: start;
}

.company-kicker {
  margin-bottom: 20px;
}

.company-head {
  max-width: none;
}

.company-copy {
  min-width: 0;
}

.company-shot img {
  object-position: center 34%;
}

.principles {
  display: flex;
  flex-direction: column;
}

.principle {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding-block: 22px;
  border-top: 1px solid var(--line-soft);
}

.principle:first-child {
  border-top: 0;
  padding-top: 0;
}

.principle h3 {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 6px;
  line-height: 1.4;
}

.principle p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--quiet);
}

/* ------------------------------------------------------------------ faq -- */

/* The FAQ runs the full width of the page. Each row is a three-column rule —
 * number, question, marker — and the answer opens into the question's column
 * rather than under the number, so the eye keeps one left edge. */
.faq {
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line-soft);
}

.faq summary {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 40px;
  align-items: start;
  gap: 0 20px;
  padding-block: 26px;
  cursor: pointer;
  list-style: none;
}

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

.faq summary .num {
  font-size: 12px;
  letter-spacing: 0.14em;
  padding-top: 6px;
}

.faq summary h3 {
  font-family: var(--sans);
  font-size: clamp(16px, 1.5vw, 21px);
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
  max-width: 46ch;
  transition: color 0.18s ease;
}

/* Drawn on the marker cell so the chevron sits on the same axis in every row,
 * whatever length the question runs to. */
.faq summary::after {
  content: "";
  grid-column: 3;
  justify-self: end;
  margin-top: 9px;
  width: 11px;
  height: 11px;
  border-right: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.faq details[open] summary::after {
  transform: rotate(-135deg);
}

.faq summary:hover h3 {
  color: var(--accent);
}

.faq .answer {
  padding: 0 0 28px 92px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--quiet);
  max-width: 82ch;
}

/* ----------------------------------------------------------------- form -- */

.contact {
  display: grid;
  grid-template-columns: var(--contact-columns);
  gap: clamp(28px, 3.6vw, 64px);
  align-items: stretch;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.field > label,
.fieldset > legend {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  padding: 0;
}

.field .req {
  color: var(--accent);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 14px 16px;
  color: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  transition: border-color 0.18s ease;
  -webkit-appearance: none;
  appearance: none;
}

.field select {
  /* The appearance reset removes the native arrow; the replacement is a
   * stroked chevron in the house line style, not a filled triangle. */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none' stroke='%237da2d0' stroke-width='1.8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E");
  background-position: right 16px center;
  background-repeat: no-repeat;
  padding-right: 44px;
}

.field select option {
  background: var(--ink);
  color: var(--paper);
}

.field textarea {
  min-height: 148px;
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: rgba(250, 250, 250, 0.3);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
  outline: none;
}

.field input[type="file"] {
  padding: 11px 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--quiet);
  cursor: pointer;
}

.field input[type="file"]::file-selector-button {
  margin-right: 14px;
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--paper);
  font: 700 10px/1 var(--sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
}

.hint {
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--dim);
}

.consent {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 14px;
  align-items: start;
  font-size: 13px;
  line-height: 1.6;
  color: var(--quiet);
  cursor: pointer;
}

/* The native control paints a filled white square on a dark ground, which
 * reads as a block rather than a checkbox. Redrawn as a hairline box with an
 * accent tick, square like everything else. */
.consent input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 0;
  cursor: pointer;
  display: grid;
  place-content: center;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.consent input:hover {
  border-color: var(--accent);
}

.consent input::before {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  transform: rotate(-45deg) translate(1px, -1px);
  opacity: 0;
}

.consent input:checked {
  background: var(--accent);
  border-color: var(--accent);
}

.consent input:checked::before {
  opacity: 1;
}

.consent a {
  color: var(--accent);
  border-bottom: 1px solid rgba(125, 162, 208, 0.4);
}

/* The honeypot must be reachable by nothing — not the eye, not a screen
 * reader, not the tab order. Off-screen rather than display:none, which some
 * bots detect. */
.trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 24px;
}

.form-status {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--accent);
  margin: 0;
}

.form-status.is-error {
  color: #e08b7d;
}

/* --------------------------------------------------------------- dialog -- */

dialog {
  width: min(680px, calc(100vw - 40px));
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: clamp(24px, 3vw, 36px);
}

dialog::backdrop {
  background: rgba(8, 9, 10, 0.82);
}

.dialog-head {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(24px, 2.4vw, 32px);
  letter-spacing: 0.04em;
  line-height: 1.05;
  margin: 0 0 12px;
}

html[lang^="zh"] .dialog-head {
  font-weight: 700;
  line-height: 1.3;
}

.dialog-body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--quiet);
  margin-bottom: 18px;
}

.summary-box {
  border: 1px solid var(--line);
  padding: 18px;
  margin-bottom: 20px;
  max-height: 42vh;
  overflow: auto;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  white-space: pre-wrap;
  word-break: break-word;
}

/* --------------------------------------------------------------- footer -- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: clamp(44px, 5vw, 72px) 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: clamp(26px, 3vw, 48px);
  padding-bottom: clamp(32px, 4vw, 52px);
}

.footer-statement {
  font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.55;
  color: var(--muted);
  max-width: 34ch;
  margin-top: 22px;
}

.footer-col h2 {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 0 0 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 11px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--quiet);
}

.footer-col address {
  font-style: normal;
  font-size: 13px;
  line-height: 1.7;
  color: var(--quiet);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px 28px;
  border-top: 1px solid var(--line-soft);
  padding-top: 24px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
}

.footer-bottom ul {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

/* ------------------------------------------------------------- document -- */

/* The privacy page: one column of running text, same tokens, no cards. */
.doc {
  max-width: 76ch;
  padding-block: clamp(48px, 6vw, 96px);
}

.doc h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(38px, 5vw, 64px);
  line-height: var(--display-leading);
  letter-spacing: var(--display-tracking);
  margin: 20px 0 0;
}

html[lang^="zh"] .doc h1 {
  font-weight: 700;
}

.doc h2 {
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 700;
  margin: 44px 0 12px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.doc p,
.doc li {
  font-size: 15px;
  line-height: 1.75;
  color: var(--quiet);
  margin: 0 0 14px;
}

.doc ul {
  padding-left: 0;
}

.doc li {
  position: relative;
  padding-left: 22px;
}

.doc li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 10px;
  height: 1px;
  background: var(--accent);
}

.doc a {
  color: var(--accent);
  border-bottom: 1px solid rgba(125, 162, 208, 0.4);
}

.doc .meta {
  margin-top: 12px;
}

/* --------------------------------------------------------------- ledger --
 * Three outcomes as full-width rows with an oversized numeral, so the opening
 * argument does not arrive as another row of identical cards.
 */

.ledger {
  border-top: 1px solid var(--line);
}

.ledger__row {
  display: grid;
  grid-template-columns: minmax(0, 150px) minmax(0, 0.9fr) minmax(0, 1.5fr);
  gap: clamp(20px, 2.6vw, 44px);
  align-items: start;
  padding-block: clamp(28px, 3.4vw, 46px);
  border-bottom: 1px solid var(--line-soft);
}

.ledger__num {
  font-family: var(--display);
  font-size: clamp(44px, 5vw, 76px);
  line-height: 0.8;
  letter-spacing: 0.02em;
  color: var(--accent);
  opacity: 0.85;
}

.ledger__row h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(22px, 2.2vw, 32px);
  line-height: 1.02;
  letter-spacing: 0.03em;
  margin: 0;
}

html[lang^="zh"] .ledger__row h3,
html[lang^="zh"] .ledger__num {
  font-weight: 700;
  line-height: 1.25;
}

.ledger__row p {
  font-size: clamp(14px, 1.15vw, 16px);
  line-height: 1.7;
  color: var(--quiet);
  max-width: 60ch;
}

/* ---------------------------------------------------------------- track --
 * The workflow as a run of stages on one rule, rather than a grid of boxes.
 * The rule is the section's only horizontal line, so the sequence reads as a
 * sequence.
 */

.track {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: clamp(20px, 2.4vw, 40px);
  row-gap: clamp(34px, 4vw, 56px);
  counter-reset: stage;
}

.track__step {
  position: relative;
  padding-top: 34px;
}

/* The rule runs the full width of each row and the marker sits on it. */
.track__step::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  right: calc(clamp(20px, 2.4vw, 40px) * -1);
  height: 1px;
  background: var(--line);
}

.track__step:nth-child(3n)::before,
.track__step:last-child::before {
  right: 0;
}

.track__step::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 0;
  width: 11px;
  height: 11px;
  background: var(--accent);
}

.track__step .num {
  display: block;
  margin-bottom: 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
}

.track__step h3 {
  font-family: var(--sans);
  font-size: clamp(15px, 1.25vw, 17px);
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 10px;
}

.track__step p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--quiet);
}

/* -------------------------------------------------------------- taxonomy --
 * The product scope as a label column and a field of tags. Eight identical
 * cards said less than the categories themselves do.
 */

.taxonomy {
  border-top: 1px solid var(--line);
}

.taxonomy__row {
  display: grid;
  grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
  gap: clamp(18px, 2.4vw, 40px);
  align-items: baseline;
  padding-block: clamp(20px, 2.2vw, 28px);
  border-bottom: 1px solid var(--line-soft);
}

.taxonomy__label {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.taxonomy__label h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(19px, 1.7vw, 23px);
  letter-spacing: 0.05em;
  line-height: 1.1;
  margin: 0;
}

html[lang^="zh"] .taxonomy__label h3 {
  font-weight: 700;
  line-height: 1.3;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chips li {
  border: 1px solid var(--line-soft);
  padding: 7px 13px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: var(--quiet);
  transition: border-color 0.18s ease, color 0.18s ease;
}

.chips li:hover {
  border-color: var(--accent);
  color: var(--paper);
}

/* --------------------------------------------------------------- checks --
 * The transparency controls: a numbered list, deliberately lighter than the
 * card grids so a section of six short statements does not weigh as much as a
 * section of six services.
 */

.checks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(28px, 4vw, 72px);
}

.checks__item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 4px 16px;
  padding-block: 20px;
  border-top: 1px solid var(--line-soft);
}

.checks__item h3 {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0;
}

.checks__item p {
  grid-column: 2;
  font-size: 13px;
  line-height: 1.65;
  color: var(--quiet);
}

/* ------------------------------------------------------------- contacts --
 * Contact details are their own band across the page, not a column squeezed
 * beside the form.
 */

.contact-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: clamp(28px, 3.4vw, 52px);
}

.contact-band > div {
  background: var(--ink);
  padding: clamp(22px, 2.4vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-band dt {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}

.contact-band dd {
  margin: 0;
  font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.5;
  color: var(--paper);
}

.contact-band dd.small {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* ------------------------------------------------------------ responsive -- */

@media (max-width: 1180px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .split,
  .company,
  .contact {
    grid-template-columns: 1fr;
  }
  .ledger__row {
    grid-template-columns: minmax(0, 96px) minmax(0, 1fr);
  }
  .ledger__row p {
    grid-column: 2;
  }
  .footer-top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .nav {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: clamp(46px, 11vw, 92px);
  }
  .track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .track__step:nth-child(3n)::before {
    right: calc(clamp(20px, 2.4vw, 40px) * -1);
  }
  .track__step:nth-child(2n)::before,
  .track__step:last-child::before {
    right: 0;
  }
  .taxonomy__row {
    grid-template-columns: minmax(0, 190px) minmax(0, 1fr);
  }
}

/* The header CTA wraps to two lines once the bar is this narrow, which
 * doubles the header's height. The mobile menu carries the same action, so
 * the bar keeps only the brand, the language switch and the toggle. */
@media (max-width: 820px) {
  .header-side .btn--compact {
    display: none;
  }
}

@media (max-width: 720px) {
  :root {
    --brand-mark-size: 38px;
  }

  .grid--2,
  .grid--3,
  .grid--4,
  .contact-band {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }

  /* Every two-column pattern becomes one column, and each keeps its own left
   * edge rather than leaving an empty label gutter beside short text. */
  .track {
    grid-template-columns: 1fr;
    row-gap: 30px;
  }
  .track__step::before {
    right: 0 !important;
  }
  .ledger__row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .ledger__num {
    font-size: 40px;
  }
  .ledger__row p {
    grid-column: 1;
  }
  .taxonomy__row {
    grid-template-columns: 1fr;
    gap: 14px;
    align-items: start;
  }
  .checks {
    grid-template-columns: 1fr;
  }
  .checks__item {
    grid-template-columns: 32px 1fr;
  }
  .faq summary {
    grid-template-columns: 40px minmax(0, 1fr) 20px;
    gap: 0 12px;
    padding-block: 20px;
  }
  .faq summary .num {
    padding-top: 4px;
  }
  .faq .answer {
    padding-left: 52px;
    padding-right: 0;
  }
  .btn {
    padding: 16px 24px;
  }
  .btn-row .btn {
    flex: 1 1 100%;
  }
  .slot__tag--place {
    display: none;
  }
  .faq .answer {
    padding-left: 0;
    padding-right: 0;
  }
  .principle {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

/* --------------------------------------------------------- mobile menu -- */

.mobile-menu {
  display: none;
  border-top: 1px solid var(--line);
  padding-block: 18px 26px;
}

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

.mobile-menu ul {
  display: flex;
  flex-direction: column;
}

.mobile-menu a {
  display: block;
  padding-block: 14px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--quiet);
}

.mobile-menu .btn {
  width: 100%;
  margin-top: 20px;
}

@media (min-width: 961px) {
  .mobile-menu,
  .mobile-menu.is-open {
    display: none;
  }
}

@media print {
  .site-header,
  .marquee,
  .slot,
  .mobile-menu {
    display: none;
  }
  body {
    background: #fff;
    color: #000;
  }
}