:root {
  --ink: #12191d;
  --muted: #58646b;
  --line: #cfd7d9;
  --line-dark: #9ca9ad;
  --paper: #ffffff;
  --soft: #f2f5f3;
  --green: #0f5132;
  --green-2: #1e6a47;
  --red: #b42318;
  --red-soft: #fff2f0;
  --blue: #205ac7;
  --yellow: #f3b61f;
  --charcoal: #172126;
  --max: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
}

body.lang-en {
  font-family: Inter, Arial, Helvetica, sans-serif;
}

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

a:hover {
  text-decoration: none;
}

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

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

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
}

.skip-link:focus {
  top: 16px;
}

.shell {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

.topbar {
  position: relative;
  z-index: 10;
  min-height: 70px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.topbar .shell {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.2;
}

.brand-mark {
  width: 28px;
  height: 28px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3px;
  flex: 0 0 auto;
}

.brand-mark i {
  display: block;
  background: var(--green);
}

.brand-mark i:nth-child(2),
.brand-mark i:nth-child(3) {
  background: var(--yellow);
}

.topnav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: #29343a;
  font-size: 14px;
  font-weight: 700;
}

.topnav a {
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.topnav a:hover,
.topnav a:focus-visible {
  color: var(--green);
  border-bottom-color: var(--green);
}

.nav-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  min-width: 250px;
}

.language-link {
  color: #344148;
  font-size: 14px;
  font-weight: 800;
}

.language-link:hover,
.language-link:focus-visible {
  color: var(--green);
}

.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 17px;
  border: 1px solid var(--green);
  border-radius: 5px;
  color: #fff;
  background: var(--green);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  background: #0a3c25;
  border-color: #0a3c25;
  transform: translateY(-1px);
}

.btn.secondary {
  color: #fff;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.76);
}

.btn.secondary:hover,
.btn.secondary:focus-visible {
  color: var(--ink);
  background: #fff;
  border-color: #fff;
}

.btn.outline {
  color: var(--green);
  background: #fff;
}

.btn.outline:hover,
.btn.outline:focus-visible {
  color: #fff;
  background: var(--green);
}

.btn.compact {
  min-height: 38px;
  padding: 8px 14px;
  font-size: 13px;
}

.hero {
  min-height: 73vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-color: #dbe3e3;
  background-position: center;
  background-size: cover;
}

.hero-cn {
  background-image: url("assets/market-entry-field-hero.jpg");
}

.hero-en {
  background-image: url("assets/rfq-item-desk-hero.jpg");
}

.hero .shell {
  padding-top: 72px;
  padding-bottom: 76px;
}

.hero-copy {
  width: min(610px, 100%);
}

.hero-cn .hero-copy {
  color: #fff;
}

.hero-en .hero-copy {
  color: #fff;
}

.hero h1 {
  max-width: 700px;
  margin: 0;
  font-size: 64px;
  font-weight: 850;
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-en h1 {
  font-size: 62px;
}

.hero p {
  max-width: 590px;
  margin: 24px 0 0;
  font-size: 21px;
  line-height: 1.55;
}

.hero-cn p {
  color: #f0f4f3;
}

.hero-en p {
  color: #edf2f1;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-cn .btn.secondary {
  color: var(--green);
  background: rgba(255, 255, 255, 0.88);
  border-color: var(--green);
}

.hero-cn .btn.secondary:hover,
.hero-cn .btn.secondary:focus-visible {
  color: #fff;
  background: var(--green);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 34px;
  font-size: 13px;
  font-weight: 750;
}

.hero-proof span {
  padding: 0 15px;
  border-left: 1px solid currentColor;
}

.hero-proof span:first-child {
  padding-left: 0;
  border-left: 0;
}

.hero-en .hero-proof {
  color: #dfe8e6;
}

.hero-cn .hero-proof {
  color: #e4ece9;
}

.section {
  padding: 78px 0;
  border-bottom: 1px solid var(--line);
}

.section.soft {
  background: var(--soft);
}

.section.dark {
  color: #fff;
  background: var(--charcoal);
  border-bottom-color: #314047;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(320px, 1.28fr);
  gap: 64px;
  align-items: end;
  margin-bottom: 38px;
}

.section-head h2,
.section-title {
  margin: 0;
  font-size: 36px;
  font-weight: 820;
  line-height: 1.2;
  letter-spacing: 0;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.dark .section-head p {
  color: #c8d1d4;
}

.data-label {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 12px;
  font-weight: 850;
  line-height: 1.2;
  text-transform: uppercase;
}

.lang-cn .data-label {
  text-transform: none;
}

.evidence-board {
  border: 1px solid var(--line-dark);
  background: #fff;
}

.board-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  padding: 26px 28px;
  border-bottom: 1px solid var(--line);
}

.board-head h3 {
  margin: 0;
  font-size: 27px;
  line-height: 1.25;
}

.board-head p {
  margin: 8px 0 0;
  color: var(--muted);
}

.board-status {
  flex: 0 0 220px;
  padding-left: 24px;
  border-left: 5px solid var(--red);
}

.board-status strong {
  display: block;
  color: var(--red);
  font-size: 24px;
  line-height: 1.1;
}

.board-status span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
}

.board-grid {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
}

.board-facts {
  border-right: 1px solid var(--line);
}

.fact-row {
  min-height: 48px;
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 14px;
  align-items: start;
  padding: 12px 22px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.fact-row:last-child {
  border-bottom: 0;
}

.fact-row span {
  color: var(--muted);
}

.fact-row strong {
  font-weight: 750;
}

.source-link {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.route-lanes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.route-lane {
  min-width: 0;
  padding: 22px;
  border-right: 1px solid var(--line);
}

.route-lane:last-child {
  border-right: 0;
}

.route-lane .lane-index {
  display: inline-block;
  width: 26px;
  height: 26px;
  margin-bottom: 14px;
  color: #fff;
  background: var(--green);
  font-size: 13px;
  font-weight: 850;
  line-height: 26px;
  text-align: center;
}

.route-lane h4 {
  min-height: 48px;
  margin: 0;
  font-size: 17px;
  line-height: 1.4;
}

.route-lane p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.route-lane dl {
  margin: 18px 0 0;
}

.route-lane dt {
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
}

.route-lane dd {
  margin: 2px 0 0;
  font-size: 14px;
  font-weight: 700;
}

.board-foot {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.board-note {
  padding: 20px 22px;
  border-right: 1px solid var(--line);
}

.board-note:last-child {
  border-right: 0;
}

.board-note h4 {
  margin: 0 0 9px;
  color: var(--green);
  font-size: 14px;
}

.board-note.stop h4 {
  color: var(--red);
}

.board-note p,
.board-note ul {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.board-note ul {
  padding-left: 18px;
}

.board-note li + li {
  margin-top: 5px;
}

.source-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.comparison-col {
  padding: 34px 38px;
}

.comparison-col + .comparison-col {
  border-left: 1px solid var(--line-dark);
}

.comparison-col h3 {
  margin: 0;
  font-size: 24px;
}

.comparison-col.weak h3 {
  color: var(--red);
}

.comparison-col.strong h3 {
  color: var(--green);
}

.check-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 11px 0 11px 31px;
  border-top: 1px solid var(--line);
  color: #344149;
}

.check-list li::before {
  position: absolute;
  top: 11px;
  left: 2px;
  font-weight: 900;
}

.weak .check-list li::before {
  content: "×";
  color: var(--red);
}

.strong .check-list li::before {
  content: "✓";
  color: var(--green);
}

.process-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid #536167;
  border-bottom: 1px solid #536167;
}

.process-step {
  position: relative;
  min-height: 190px;
  padding: 28px 26px;
  border-right: 1px solid #536167;
}

.process-step:last-child {
  border-right: 0;
}

.process-step b {
  display: block;
  margin-bottom: 30px;
  color: var(--yellow);
  font-size: 15px;
}

.process-step h3 {
  margin: 0;
  font-size: 21px;
}

.process-step p {
  margin: 10px 0 0;
  color: #c8d1d4;
  font-size: 14px;
}

.process-step::after {
  content: "";
  position: absolute;
  right: -8px;
  top: 50%;
  z-index: 1;
  width: 15px;
  height: 15px;
  background: var(--yellow);
  transform: translateY(-50%) rotate(45deg);
}

.process-step:last-child::after {
  display: none;
}

.fit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line-dark);
}

.fit-col {
  padding: 32px 36px;
}

.fit-col + .fit-col {
  border-left: 1px solid var(--line-dark);
}

.fit-col h3 {
  margin: 0 0 18px;
  font-size: 23px;
}

.fit-col.good h3 {
  color: var(--green);
}

.fit-col.bad h3 {
  color: var(--red);
}

.fit-col ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.fit-col li + li {
  margin-top: 10px;
}

.packages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.package {
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 30px 28px;
  border-right: 1px solid var(--line-dark);
}

.package:last-child {
  border-right: 0;
}

.package small {
  color: var(--green);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.lang-cn .package small {
  text-transform: none;
}

.package h3 {
  margin: 10px 0 0;
  font-size: 23px;
}

.package .price {
  margin: 14px 0 0;
  color: var(--ink);
  font-size: 28px;
  font-weight: 850;
}

.package p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.package ul {
  flex: 1;
  margin: 18px 0 24px;
  padding-left: 18px;
  color: #344149;
  font-size: 14px;
}

.package li + li {
  margin-top: 8px;
}

.input-output {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.io-col {
  padding: 36px;
}

.io-col + .io-col {
  border-left: 1px solid var(--line-dark);
}

.io-col h3 {
  margin: 0 0 24px;
  font-size: 27px;
}

.io-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 28px;
  margin: 0;
}

.io-item {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.io-item dt {
  font-size: 14px;
  font-weight: 800;
}

.io-item dd {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.procurement-board {
  border: 1px solid var(--line-dark);
  background: #fff;
}

.procurement-head {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  border-bottom: 1px solid var(--line);
}

.procurement-title,
.procurement-decision {
  padding: 26px 28px;
}

.procurement-title {
  border-right: 1px solid var(--line);
}

.procurement-title h3 {
  margin: 0;
  font-size: 28px;
  line-height: 1.25;
}

.procurement-title p {
  margin: 8px 0 0;
  color: var(--muted);
}

.procurement-decision strong {
  display: block;
  color: var(--red);
  font-size: 23px;
  line-height: 1.25;
}

.procurement-decision p {
  margin: 10px 0 0;
  color: var(--muted);
}

.procurement-grid {
  display: grid;
  grid-template-columns: 0.78fr 1fr 1fr 0.88fr;
}

.procurement-col {
  padding: 23px 22px;
  border-right: 1px solid var(--line);
}

.procurement-col:last-child {
  border-right: 0;
}

.procurement-col h4 {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 15px;
}

.procurement-col.warn h4 {
  color: var(--red);
}

.procurement-col ul {
  margin: 0;
  padding-left: 18px;
  color: #344149;
  font-size: 13px;
}

.procurement-col li + li {
  margin-top: 7px;
}

.metric-list {
  margin: 0;
}

.metric-list div {
  display: grid;
  grid-template-columns: 108px 1fr;
  gap: 10px;
  padding: 9px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.metric-list div:first-child {
  padding-top: 0;
  border-top: 0;
}

.metric-list dt {
  color: var(--muted);
}

.metric-list dd {
  margin: 0;
  font-weight: 750;
}

.memory-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.memory-step {
  min-height: 170px;
  padding: 27px 25px;
  border-right: 1px solid var(--line-dark);
}

.memory-step:last-child {
  border-right: 0;
}

.memory-step b {
  display: block;
  color: var(--green);
  font-size: 28px;
  line-height: 1;
}

.memory-step h3 {
  margin: 22px 0 0;
  font-size: 18px;
}

.memory-step p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.cta-band {
  color: #fff;
  background: var(--green);
}

.cta-band .shell {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 50px;
  align-items: center;
}

.cta-band h2 {
  margin: 0;
  font-size: 36px;
  line-height: 1.2;
}

.cta-band p {
  max-width: 760px;
  margin: 12px 0 0;
  color: #dce9e2;
}

.cta-band .btn {
  color: var(--green);
  background: #fff;
  border-color: #fff;
}

.cta-band .btn:hover,
.cta-band .btn:focus-visible {
  color: #fff;
  background: transparent;
}

.boundary {
  display: grid;
  grid-template-columns: 0.55fr 1.45fr;
  gap: 58px;
  align-items: start;
}

.boundary h2 {
  margin: 0;
  font-size: 36px;
}

.boundary p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.boundary strong {
  color: var(--ink);
}

.footer {
  padding: 42px 0;
  color: #dce4e6;
  background: #10171a;
}

.footer .shell {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: end;
}

.footer strong {
  display: block;
  color: #fff;
  font-size: 18px;
}

.footer p {
  margin: 7px 0 0;
  color: #aebbc0;
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 20px;
  font-size: 13px;
  font-weight: 750;
}

.footer a:hover,
.footer a:focus-visible {
  color: var(--yellow);
}

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

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

  .btn {
    transition: none;
  }
}

@media (max-width: 1040px) {
  .topnav {
    display: none;
  }

  .nav-actions {
    min-width: 0;
  }

  .hero {
    min-height: 680px;
    background-position: 58% center;
  }

  .hero-cn {
    background-position: 61% center;
  }

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

  .board-grid,
  .procurement-head {
    grid-template-columns: 1fr;
  }

  .board-facts,
  .procurement-title {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .procurement-grid {
    grid-template-columns: 1fr 1fr;
  }

  .procurement-col:nth-child(2) {
    border-right: 0;
  }

  .procurement-col:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 780px) {
  .shell {
    width: min(100% - 32px, var(--max));
  }

  .topbar,
  .topbar .shell {
    min-height: 62px;
  }

  .brand {
    min-width: 0;
    font-size: 16px;
  }

  .brand-mark {
    width: 24px;
    height: 24px;
  }

  .nav-actions .btn {
    display: none;
  }

  .hero {
    min-height: 650px;
    align-items: flex-end;
    background-position: 67% center;
  }

  .hero-cn {
    background-position: 65% center;
  }

  .hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background: rgba(8, 16, 19, 0.55);
    pointer-events: none;
  }

  .hero .shell {
    position: relative;
    z-index: 1;
    padding-top: 64px;
    padding-bottom: 54px;
  }

  .hero-cn .hero-copy,
  .hero-cn p,
  .hero-cn .hero-proof {
    color: #fff;
  }

  .hero h1,
  .hero-en h1 {
    font-size: 40px;
  }

  .hero p {
    margin-top: 18px;
    font-size: 18px;
  }

  .hero-proof {
    display: block;
    margin-top: 26px;
  }

  .hero-proof span {
    display: block;
    padding: 5px 0;
    border-left: 0;
  }

  .section {
    padding: 58px 0;
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-bottom: 28px;
  }

  .section-head h2,
  .section-title,
  .cta-band h2,
  .boundary h2 {
    font-size: 30px;
  }

  .board-head {
    display: block;
    padding: 22px 20px;
  }

  .board-head h3 {
    font-size: 23px;
  }

  .board-status {
    margin-top: 20px;
    padding: 13px 0 0;
    border-top: 4px solid var(--red);
    border-left: 0;
  }

  .board-grid,
  .route-lanes,
  .board-foot,
  .comparison,
  .fit-grid,
  .packages,
  .input-output,
  .procurement-grid,
  .memory-rail,
  .cta-band .shell,
  .boundary,
  .footer .shell {
    grid-template-columns: 1fr;
  }

  .board-facts,
  .route-lane,
  .board-note,
  .comparison-col,
  .fit-col,
  .package,
  .io-col,
  .procurement-col,
  .memory-step {
    border-right: 0;
  }

  .route-lane,
  .board-note,
  .comparison-col + .comparison-col,
  .fit-col + .fit-col,
  .package,
  .io-col + .io-col,
  .procurement-col,
  .memory-step {
    border-top: 1px solid var(--line);
  }

  .route-lane:first-child,
  .board-note:first-child,
  .package:first-child,
  .procurement-col:first-child,
  .memory-step:first-child {
    border-top: 0;
  }

  .route-lane h4 {
    min-height: 0;
  }

  .process-rail {
    grid-template-columns: 1fr;
  }

  .process-step {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid #536167;
  }

  .process-step:last-child {
    border-bottom: 0;
  }

  .process-step::after {
    right: 50%;
    top: auto;
    bottom: -8px;
    transform: translateX(50%) rotate(45deg);
  }

  .comparison-col,
  .fit-col,
  .io-col {
    padding: 28px 24px;
  }

  .io-list {
    grid-template-columns: 1fr;
  }

  .procurement-col:nth-child(2) {
    border-right: 0;
  }

  .procurement-col:nth-child(-n + 2) {
    border-bottom: 0;
  }

  .cta-band .shell {
    gap: 26px;
  }

  .cta-band .btn {
    width: 100%;
  }

  .footer .shell {
    gap: 30px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 430px) {
  .shell {
    width: min(100% - 24px, var(--max));
  }

  .brand span:last-child {
    max-width: 155px;
  }

  .language-link {
    font-size: 13px;
  }

  .hero {
    min-height: 620px;
  }

  .hero h1,
  .hero-en h1 {
    font-size: 37px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .fact-row {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .metric-list div {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}