:root {
  --ink: #050505;
  --paper: #ffffff;
  --soft: #f2f2f2;
  --line: #111111;
  --muted: #5f5f5f;
  --frame: min(1380px, calc(100% - 64px));
  --display: "Arial Black", "Microsoft YaHei", "PingFang SC", sans-serif;
  --body: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 4px solid #ffffff;
  outline-offset: 4px;
  box-shadow: 0 0 0 7px #000000;
}

::selection {
  color: #ffffff;
  background: #000000;
}

.frame {
  width: var(--frame);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: #ffffff;
  background: #000000;
  transform: translateY(-180%);
}

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

.masthead {
  position: relative;
  z-index: 20;
  background: #ffffff;
  border-bottom: 4px solid #000000;
}

.masthead-inner {
  min-height: 92px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 46px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--display);
  font-size: 25px;
  font-weight: 900;
  letter-spacing: -.04em;
}

.wordmark img {
  display: block;
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.primary-nav {
  display: flex;
  justify-content: center;
  gap: clamp(20px, 3vw, 50px);
  font-size: 14px;
  font-weight: 800;
}

.primary-nav a {
  padding: 8px 0 5px;
  border-bottom: 3px solid transparent;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  border-color: #000000;
}

.button {
  min-width: 148px;
  min-height: 52px;
  padding: 13px 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 3px solid #000000;
  border-radius: 0;
  font-size: 15px;
  font-weight: 900;
  line-height: 1;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
  transition: color .16s ease, background-color .16s ease, transform .16s ease;
}

.button:hover {
  transform: translate(-3px, -3px);
}

.button-dark {
  color: #ffffff;
  background: #000000;
  box-shadow: 5px 5px 0 #ffffff, 7px 7px 0 #000000;
}

.nav-download {
  box-shadow: none;
}

.button-light {
  color: #000000;
  background: #ffffff;
  border-color: #ffffff;
  box-shadow: 7px 7px 0 #000000, 9px 9px 0 #ffffff;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding-block: 8px;
  border-bottom: 3px solid #000000;
  font-size: 14px;
  font-weight: 900;
}

.eyebrow {
  margin: 0 0 24px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.eyebrow-light {
  color: #ffffff;
}

.hero {
  min-height: 720px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr);
  align-items: center;
  border-bottom: 5px solid #000000;
  overflow: hidden;
}

.hero-copy {
  align-self: stretch;
  display: flex;
  align-items: center;
  background: #ffffff;
}

.hero-copy-inner {
  width: min(720px, calc(100% - 64px));
  margin-left: max(32px, calc((100vw - 1380px) / 2));
  padding: 80px 32px 80px 0;
}

.hero h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(92px, 10.2vw, 176px);
  font-weight: 900;
  line-height: .77;
  letter-spacing: -.1em;
}

.hero h1 span {
  display: block;
}

.outline-word {
  color: #ffffff;
  -webkit-text-stroke: 4px #000000;
  text-stroke: 4px #000000;
}

.hero-lead {
  max-width: 590px;
  margin: 42px 0 28px;
  font-size: clamp(17px, 1.35vw, 21px);
  font-weight: 700;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 34px;
}

.hero-note {
  margin: 32px 0 0;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .08em;
}

.hero-product {
  position: relative;
  align-self: center;
  min-width: 0;
  min-height: 720px;
  padding: 76px clamp(38px, 5vw, 86px) 76px clamp(92px, 8vw, 138px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  background: #000000;
  border-left: 5px solid #000000;
}

.vertical-signal {
  position: absolute;
  left: 24px;
  top: 50%;
  font-family: var(--display);
  font-size: clamp(54px, 5.1vw, 92px);
  line-height: 1;
  letter-spacing: -.07em;
  writing-mode: vertical-rl;
  transform: translateY(-50%) rotate(180deg);
  color: #000000;
  -webkit-text-stroke: 2px #ffffff;
}

.product-stage {
  width: min(100%, 520px);
  margin: 0;
  align-self: center;
  background: #ffffff;
  border: 4px solid #ffffff;
}

.product-label {
  min-height: 44px;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: #000000;
  border-bottom: 4px solid #000000;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .12em;
}

.product-stage figcaption {
  padding: 8px 12px;
  color: #000000;
  border-top: 4px solid #000000;
  font-size: 11px;
  font-weight: 800;
  text-align: right;
}

.declaration {
  padding: clamp(70px, 10vw, 150px) max(32px, calc((100vw - 1380px) / 2));
  background: #000000;
  border-bottom: 5px solid #000000;
}

.declaration p {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(54px, 8vw, 132px);
  font-weight: 900;
  line-height: .94;
  letter-spacing: -.07em;
}

.declaration p:first-child {
  color: #ffffff;
}

.declaration p:last-child {
  color: #000000;
  background: #ffffff;
  width: fit-content;
  margin-top: 14px;
  padding: .04em .12em .1em;
}

.section-index {
  grid-column: 1 / -1;
  padding-bottom: 18px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  border-bottom: 5px solid #000000;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .12em;
}

.section-index strong {
  font-family: var(--display);
  font-size: 44px;
  line-height: .8;
}

.platform-register {
  padding-block: 120px;
  display: grid;
  grid-template-columns: minmax(260px, .8fr) minmax(420px, 1.2fr);
  gap: 60px 9vw;
}

.platform-heading h2,
.ledger-title h2,
.insight-lead h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(48px, 5.6vw, 86px);
  line-height: .98;
  letter-spacing: -.07em;
}

.platform-heading p {
  max-width: 500px;
  margin: 32px 0 0;
  font-size: 17px;
  font-weight: 700;
}

.platform-lines {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 4px solid #000000;
}

.platform-lines li {
  min-height: 70px;
  padding: 10px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  border-bottom: 2px solid #000000;
}

.platform-lines span {
  font-family: var(--display);
  font-size: clamp(26px, 3vw, 42px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.04em;
}

.platform-lines small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.platform-download {
  grid-column: 2;
  justify-self: end;
}

.process {
  padding-block: 120px;
  color: #ffffff;
  background: #000000;
  border-block: 5px solid #000000;
}

.process-heading {
  display: grid;
  grid-template-columns: 180px 1fr;
  align-items: start;
  gap: 40px;
}

.section-number {
  font-family: var(--display);
  font-size: clamp(90px, 12vw, 180px);
  font-weight: 900;
  line-height: .75;
  letter-spacing: -.1em;
  color: #000000;
  -webkit-text-stroke: 3px #ffffff;
}

.process-heading h2 {
  max-width: 900px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(58px, 7.5vw, 116px);
  line-height: .92;
  letter-spacing: -.08em;
}

.process-list {
  margin: 100px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 5px solid #ffffff;
  border-bottom: 5px solid #ffffff;
  list-style: none;
}

.process-list li {
  min-width: 0;
  padding: 38px 34px 44px;
}

.process-list li + li {
  border-left: 5px solid #ffffff;
}

.step-number {
  display: block;
  font-family: var(--display);
  font-size: 88px;
  font-weight: 900;
  line-height: .8;
}

.process-list h3 {
  margin: 38px 0 12px;
  font-family: var(--display);
  font-size: clamp(35px, 4vw, 58px);
  line-height: 1;
  letter-spacing: -.06em;
}

.process-list p {
  max-width: 330px;
  margin: 0;
  color: #d7d7d7;
  font-size: 15px;
}

.capability-ledger {
  padding-block: 120px;
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: 72px 9vw;
}

.ledger-title {
  align-self: start;
  position: sticky;
  top: 30px;
}

.ledger-rows {
  border-top: 5px solid #000000;
}

.ledger-rows article {
  min-height: 196px;
  padding: 28px 0;
  display: grid;
  grid-template-columns: 90px minmax(160px, .65fr) 1fr;
  align-items: center;
  gap: 24px;
  border-bottom: 5px solid #000000;
}

.ledger-code {
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .12em;
  writing-mode: vertical-rl;
}

.ledger-rows h3 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(31px, 3.5vw, 54px);
  line-height: 1;
  letter-spacing: -.06em;
}

.ledger-rows p {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
}

.product-proof {
  padding-block: 120px;
  background: var(--soft);
  border-block: 5px solid #000000;
}

.product-proof-grid {
  display: grid;
  grid-template-columns: minmax(320px, .7fr) minmax(0, 1.3fr);
  align-items: center;
  gap: 7vw;
}

.dark-number {
  display: block;
  margin-bottom: 54px;
  color: #ffffff;
  -webkit-text-stroke-color: #000000;
}

.product-proof-copy h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(50px, 6vw, 90px);
  line-height: .93;
  letter-spacing: -.07em;
}

.product-proof-copy > p:not(.eyebrow) {
  max-width: 500px;
  margin: 32px 0;
  font-size: 16px;
  font-weight: 700;
}

.wide-product {
  margin: 0;
  align-self: center;
  background: #ffffff;
  border: 5px solid #000000;
}

.wide-product-label,
.wide-product figcaption {
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .12em;
}

.wide-product-label {
  color: #ffffff;
  background: #000000;
}

.wide-product figcaption {
  border-top: 5px solid #000000;
  text-align: right;
}

.insight-column {
  padding-block: 120px;
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: 70px 9vw;
}

.insight-lead {
  align-self: start;
}

.insight-lead .text-link {
  margin-top: 38px;
}

.insight-lines {
  border-top: 5px solid #000000;
}

.insight-lines article {
  padding: 36px 0 42px;
  border-bottom: 5px solid #000000;
}

.insight-lines article > span {
  display: block;
  margin-bottom: 24px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .12em;
}

.insight-lines h3 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(28px, 3.2vw, 48px);
  line-height: 1.12;
  letter-spacing: -.05em;
}

.insight-lines p {
  max-width: 670px;
  margin: 20px 0 0;
  font-weight: 700;
}

.closing-call {
  position: relative;
  min-height: 640px;
  padding-block: 130px;
  display: flex;
  align-items: center;
  color: #ffffff;
  background: #000000;
  overflow: hidden;
}

.closing-words {
  position: absolute;
  inset: 50% auto auto 50%;
  color: #000000;
  font-family: var(--display);
  font-size: clamp(120px, 20vw, 350px);
  font-weight: 900;
  line-height: .7;
  letter-spacing: -.11em;
  white-space: nowrap;
  -webkit-text-stroke: 2px #343434;
  transform: translate(-50%, -50%);
}

.closing-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 60px;
}

.closing-inner h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(55px, 7.5vw, 112px);
  line-height: .92;
  letter-spacing: -.08em;
}

.site-footer {
  color: #ffffff;
  background: #000000;
  border-top: 5px solid #ffffff;
}

.footer-inner {
  padding-block: 74px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 80px;
}

.wordmark-footer {
  color: #ffffff;
}

.footer-brand p {
  max-width: 520px;
  margin: 24px 0 0;
  color: #cfcfcf;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(130px, 1fr));
  gap: 80px;
}

.footer-nav h3 {
  margin: 0 0 18px;
  font-size: 13px;
}

.footer-nav a {
  display: block;
  width: fit-content;
  margin: 9px 0;
  color: #d8d8d8;
  font-size: 14px;
}

.footer-nav a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.copyright {
  padding-block: 22px;
  border-top: 2px solid #ffffff;
  color: #c7c7c7;
  font-size: 12px;
}

@media (max-width: 1080px) {
  :root {
    --frame: min(100% - 40px, 960px);
  }

  .masthead-inner {
    grid-template-columns: auto 1fr;
  }

  .primary-nav {
    justify-content: flex-end;
  }

  .nav-download {
    display: none;
  }

  .hero {
    min-height: 0;
    grid-template-columns: 1fr 1fr;
  }

  .hero-copy-inner {
    width: calc(100% - 40px);
    margin-left: 20px;
    padding-right: 18px;
  }

  .hero h1 {
    font-size: clamp(76px, 10vw, 116px);
  }

  .hero-product {
    min-height: 660px;
    padding: 66px 34px 66px 90px;
  }

  .platform-register,
  .capability-ledger,
  .insight-column {
    gap: 60px;
  }

  .process-heading {
    grid-template-columns: 130px 1fr;
  }

  .process-list li {
    padding-inline: 22px;
  }

  .ledger-rows article {
    grid-template-columns: 48px 1fr;
  }

  .ledger-rows p {
    grid-column: 2;
  }
}

@media (max-width: 760px) {
  :root {
    --frame: calc(100% - 32px);
  }

  html {
    scroll-behavior: auto;
  }

  .masthead-inner {
    min-height: auto;
    padding-block: 14px 10px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
  }

  .wordmark {
    font-size: 21px;
  }

  .primary-nav {
    order: 2;
    width: 100%;
    justify-content: space-between;
    gap: 10px;
    overflow-x: auto;
    font-size: 12px;
  }

  .hero {
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }

  .hero-copy {
    order: 1;
  }

  .hero-copy-inner {
    width: calc(100% - 32px);
    margin-inline: auto;
    padding: 68px 0 64px;
  }

  .hero h1 {
    font-size: clamp(78px, 27vw, 116px);
  }

  .outline-word {
    -webkit-text-stroke-width: 3px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }

  .hero-product {
    order: 2;
    min-height: 0;
    padding: 56px 24px 56px 76px;
    border-left: 0;
    border-top: 5px solid #000000;
  }

  .vertical-signal {
    left: 12px;
    font-size: 48px;
  }

  .declaration {
    padding-block: 74px;
  }

  .declaration p {
    font-size: clamp(45px, 15vw, 72px);
  }

  .platform-register,
  .capability-ledger,
  .insight-column {
    padding-block: 82px;
    display: block;
  }

  .platform-heading,
  .ledger-title,
  .insight-lead {
    margin-top: 52px;
  }

  .platform-lines,
  .ledger-rows,
  .insight-lines {
    margin-top: 54px;
  }

  .platform-download {
    margin-top: 34px;
  }

  .process {
    padding-block: 84px;
  }

  .process-heading {
    display: block;
  }

  .process-heading > div {
    margin-top: 42px;
  }

  .process-list {
    margin-top: 64px;
    display: block;
  }

  .process-list li + li {
    border-left: 0;
    border-top: 5px solid #ffffff;
  }

  .process-list li {
    padding: 36px 10px 42px;
  }

  .ledger-title {
    position: static;
  }

  .ledger-rows article {
    min-height: 0;
    padding-block: 30px;
  }

  .product-proof {
    padding-block: 82px;
  }

  .product-proof-grid {
    display: block;
  }

  .wide-product {
    margin-top: 60px;
  }

  .closing-call {
    min-height: 560px;
    padding-block: 90px;
  }

  .closing-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .closing-words {
    white-space: normal;
    text-align: center;
  }

  .footer-inner {
    display: block;
  }

  .footer-nav {
    margin-top: 52px;
    gap: 34px;
  }
}

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

  .button {
    transition: none;
  }
}

/* Hero image compliance: final, high-specificity natural-ratio overrides. */
.hero .hero-product {
  align-self: center;
}

.hero .product-stage {
  align-self: center;
  height: auto;
  padding: 0;
  margin-block: 0;
  overflow: visible;
  transform: none;
}

.hero .product-stage > img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 0;
  max-height: none;
  margin: 0;
  padding: 0;
  object-fit: contain;
  object-position: center;
  clip-path: none;
  transform: none;
}

.product-proof .wide-product {
  align-self: center;
  height: auto;
  padding: 0;
  margin-block: 0;
  overflow: visible;
  transform: none;
}

.product-proof .wide-product > img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 0;
  max-height: none;
  margin: 0;
  padding: 0;
  object-fit: contain;
  object-position: center;
  clip-path: none;
  transform: none;
}