:root {
  --paper: #f3f0e9;
  --paper-deep: #e9e4da;
  --white: #fbfaf7;
  --ink: #11120f;
  --ink-soft: #33342f;
  --muted: #6a6b64;
  --line: rgba(17, 18, 15, 0.16);
  --vermillion: #a8362a;
  --vermillion-dark: #7d241c;
  --header-height: 74px;
  --max-width: 1280px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body[data-language="zh"] [data-copy="en"],
body[data-language="en"] [data-copy="zh"] {
  display: none !important;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

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

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--white);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: none;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: var(--header-height);
  padding: 0 clamp(22px, 4vw, 64px);
  border-bottom: 1px solid transparent;
  background: rgba(243, 240, 233, 0.9);
  backdrop-filter: blur(18px);
  transition: border-color 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  background: rgba(243, 240, 233, 0.96);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 18px;
  width: max-content;
  text-decoration: none;
}

.brand-company,
.brand-product,
.language-toggle,
.site-nav {
  font-size: 12px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.brand-company {
  font-weight: 700;
}

.brand-product {
  color: var(--muted);
  letter-spacing: 0.08em;
}

.brand-product i {
  font-style: normal;
  letter-spacing: 0.13em;
}

.site-nav {
  display: flex;
  gap: 34px;
}

.site-nav a,
.footer-links a {
  text-decoration: none;
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -6px;
  left: 0;
  height: 1px;
  background: var(--ink);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.language-toggle {
  justify-self: end;
  min-width: 44px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-weight: 700;
}

.language-toggle:hover,
.language-toggle:focus-visible {
  border-color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  gap: clamp(64px, 8vw, 132px);
  align-items: center;
  min-height: calc(100svh - var(--header-height));
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(72px, 9vw, 132px) clamp(24px, 5vw, 72px) clamp(84px, 10vw, 150px);
}

.eyebrow,
.section-number,
.counsel-label,
.stage-label,
.stage-note,
.visual-caption {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 28px 0 28px;
  font-size: clamp(52px, 6.8vw, 104px);
  font-weight: 560;
  letter-spacing: -0.065em;
  line-height: 0.98;
}

body[data-language="en"] .hero h1 {
  font-size: clamp(48px, 6.1vw, 92px);
  letter-spacing: -0.058em;
}

.hero-lede {
  max-width: 700px;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.62;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 23px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 680;
  letter-spacing: 0.015em;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--ink);
  color: var(--white);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--vermillion);
  border-color: var(--vermillion);
}

.button-secondary {
  background: transparent;
  color: var(--ink);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: var(--white);
}

.availability {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.availability-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--vermillion);
}

.hero-visual {
  position: relative;
}

.counsel-card {
  position: relative;
  overflow: hidden;
  padding: clamp(25px, 3.5vw, 44px);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 3px;
  background: #151712;
  box-shadow: 0 34px 80px rgba(21, 18, 13, 0.22);
  color: #f5f1e8;
}

.counsel-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  background: var(--vermillion);
  content: "";
}

.counsel-topline {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.64);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.counsel-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  background: var(--vermillion);
  color: var(--white);
  font-size: 16px;
  letter-spacing: 0;
}

.counsel-level {
  padding: 4px 8px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
}

.counsel-section,
.next-step {
  padding: 26px 0;
}

.counsel-label {
  color: rgba(255, 255, 255, 0.48);
}

.counsel-value {
  margin: 8px 0 0;
  font-size: clamp(22px, 2.5vw, 31px);
  line-height: 1.35;
}

.evidence-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.evidence-grid > div {
  padding: 24px 22px 24px 0;
}

.evidence-grid > div + div {
  padding-right: 0;
  padding-left: 22px;
  border-left: 1px solid rgba(255, 255, 255, 0.15);
}

.evidence-grid p:not(.counsel-label),
.next-step p:not(.counsel-label) {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
  line-height: 1.65;
}

.next-step p:not(.counsel-label) {
  font-size: 17px;
}

.feedback-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.feedback-row > span {
  padding: 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 11px;
}

.visual-caption {
  margin-top: 14px;
  text-align: right;
}

.section-dark,
.section-light,
.section-paper,
.final-cta {
  padding: clamp(100px, 13vw, 190px) clamp(24px, 6vw, 88px);
}

.section-dark {
  background: var(--ink);
  color: var(--white);
}

.section-light {
  background: var(--white);
}

.section-paper {
  background: var(--paper-deep);
}

.statement-inner,
.section-heading,
.moat-layout,
.thesis-grid,
.trust-rules,
.stage,
.company-grid,
.cta-inner,
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.statement-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(48px, 9vw, 140px);
  align-items: end;
}

.statement-inner .section-number,
.thesis .section-number,
.final-cta .eyebrow {
  color: rgba(255, 255, 255, 0.42);
}

.statement-inner h2,
.section-heading h2,
.cta-inner h2 {
  margin: 22px 0 0;
  font-size: clamp(46px, 6.5vw, 96px);
  font-weight: 550;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.statement-inner p:last-child,
.thesis-grid > p,
.company-story,
.cta-inner > p:not(.eyebrow) {
  margin: 0;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.72;
}

.statement-inner p:last-child,
.thesis-grid > p {
  color: rgba(255, 255, 255, 0.67);
}

.section-heading {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(42px, 7vw, 110px);
  align-items: end;
}

.section-heading .section-number {
  grid-column: 1 / -1;
}

.section-heading h2 {
  margin-top: 0;
}

.section-heading > p:last-child {
  margin: 0 0 5px;
  color: var(--ink-soft);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.7;
}

.operating-loop {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  max-width: var(--max-width);
  margin: clamp(80px, 9vw, 130px) auto 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.operating-loop li {
  position: relative;
  min-height: 320px;
  padding: 27px 25px 30px;
  border-right: 1px solid var(--line);
}

.operating-loop li:first-child {
  border-left: 1px solid var(--line);
}

.loop-index {
  color: var(--vermillion);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.operating-loop h3 {
  margin: 76px 0 18px;
  font-size: 26px;
  font-weight: 560;
  letter-spacing: -0.025em;
}

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

.moat .section-heading {
  grid-template-columns: 1fr;
}

.moat .section-heading h2 {
  max-width: 980px;
}

.moat-layout {
  margin-top: clamp(72px, 9vw, 128px);
}

.moat-lede {
  max-width: 800px;
  margin: 0;
  font-size: clamp(26px, 3.2vw, 44px);
  letter-spacing: -0.035em;
  line-height: 1.32;
}

.ledger {
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto 1fr auto;
  align-items: center;
  gap: 18px;
  margin: clamp(72px, 8vw, 112px) 0;
}

.ledger div {
  display: grid;
  width: clamp(82px, 10vw, 130px);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.ledger div:nth-of-type(3) {
  background: var(--vermillion);
  border-color: var(--vermillion);
  color: var(--white);
}

.ledger i {
  height: 1px;
  background: var(--ink);
}

.principles-grid,
.trust-rules {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.principles-grid article,
.trust-rules article {
  min-height: 230px;
  padding: clamp(28px, 4vw, 50px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.principles-grid h3,
.trust-rules h3 {
  margin: 0 0 18px;
  font-size: clamp(20px, 2.2vw, 29px);
  font-weight: 560;
  letter-spacing: -0.025em;
  line-height: 1.3;
}

.principles-grid p,
.trust-rules p {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
}

.thesis-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(60px, 10vw, 150px);
  align-items: end;
}

.thesis .section-heading {
  display: block;
}

.thesis .section-heading h2 {
  font-size: clamp(44px, 5.5vw, 82px);
}

.trust-rules {
  margin-top: clamp(72px, 9vw, 126px);
}

.rule-mark {
  display: block;
  margin-bottom: 54px;
  color: var(--vermillion);
  font-family: Georgia, serif;
  font-size: 18px;
}

.policy-link {
  max-width: var(--max-width);
  margin: 36px auto 0;
  text-align: right;
}

.policy-link a {
  font-size: 14px;
  font-weight: 680;
}

.stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(60px, 10vw, 150px);
  align-items: start;
}

.stage-copy h2 {
  margin: 22px 0 32px;
  font-size: clamp(42px, 5vw, 72px);
  font-weight: 550;
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.stage-copy > p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-size: 20px;
}

.stage-focus {
  padding-top: 6px;
}

.stage-focus ol {
  margin: 22px 0 28px;
  padding: 0;
  border-top: 1px solid var(--ink);
  list-style: none;
  counter-reset: focus;
}

.stage-focus li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  counter-increment: focus;
  font-size: 18px;
}

.stage-focus li::before {
  color: var(--vermillion);
  content: "0" counter(focus);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.company-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(60px, 10vw, 150px);
}

.company-grid .section-heading {
  display: block;
}

.company-grid .section-heading h2 {
  font-size: clamp(42px, 5vw, 72px);
}

.company-story p {
  margin: 0 0 28px;
}

.company-story p:last-child {
  color: var(--vermillion-dark);
  font-weight: 650;
}

.final-cta {
  background: var(--vermillion-dark);
  color: var(--white);
}

.cta-inner {
  max-width: 1080px;
  margin-left: max(calc((100% - var(--max-width)) / 2), 0px);
}

.cta-inner h2 {
  max-width: 1040px;
}

.cta-inner > p:not(.eyebrow) {
  max-width: 760px;
  margin-top: 34px;
  color: rgba(255, 255, 255, 0.75);
}

.button-inverse {
  background: var(--white);
  border-color: var(--white);
  color: var(--ink);
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white);
}

.button-ghost:hover,
.button-ghost:focus-visible {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
}

.final-cta :focus-visible {
  outline-color: var(--white);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(520px, 1.28fr);
  gap: clamp(54px, 9vw, 132px);
  max-width: var(--max-width);
  margin: 0 auto;
}

.contact-intro h2 {
  margin: 18px 0 26px;
  font-size: clamp(40px, 4.6vw, 68px);
  font-weight: 560;
  letter-spacing: -0.05em;
  line-height: 1.02;
}

.contact-intro > p:not(.section-number) {
  max-width: 500px;
  color: var(--ink-soft);
}

.contact-privacy-note {
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted) !important;
  font-size: 14px;
}

.contact-panel {
  padding: clamp(24px, 4vw, 52px);
  border: 1px solid var(--line);
  background: var(--paper);
}

.intent-switcher {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-deep);
}

.intent-switcher button {
  min-height: 42px;
  padding: 8px 12px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 680;
}

.intent-switcher button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--white);
}

.lead-form {
  position: relative;
}

.lead-form [hidden] {
  display: none !important;
}

.form-heading h3 {
  margin: 38px 0 26px;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-bottom: 22px;
}

.field {
  display: grid;
  gap: 8px;
  min-width: 0;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 620;
}

.field b {
  color: var(--vermillion);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  border: 1px solid rgba(17, 18, 15, 0.28);
  border-radius: 0;
  background: var(--white);
  color: var(--ink);
  font: inherit;
  font-weight: 430;
}

.field textarea {
  min-height: 150px;
  resize: vertical;
}

.field input:hover,
.field select:hover,
.field textarea:hover {
  border-color: rgba(17, 18, 15, 0.55);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--vermillion);
  outline: 2px solid rgba(168, 54, 42, 0.16);
  outline-offset: 0;
}

.form-span,
.field-message {
  grid-column: 1 / -1;
}

.field-message {
  margin-top: 2px;
}

.consent-field {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 11px;
  align-items: start;
  margin-top: 22px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.consent-field input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--vermillion-dark);
}

.form-actions {
  display: flex;
  gap: 20px;
  align-items: center;
  margin-top: 28px;
}

.form-actions .button {
  flex: 0 0 auto;
  cursor: pointer;
}

.form-actions .button:disabled {
  cursor: wait;
  opacity: 0.58;
  transform: none;
}

.form-status,
.form-fallback {
  margin: 0;
  font-size: 14px;
}

.form-status[data-state="success"] {
  color: #256333;
  font-weight: 700;
}

.form-status[data-state="error"] {
  color: var(--vermillion-dark);
}

.form-fallback {
  margin-top: 18px;
  color: var(--vermillion-dark);
}

.form-trap {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.lead-form[aria-busy="true"] {
  cursor: progress;
}

.site-footer {
  width: 100%;
  background: var(--ink);
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1.35fr auto;
  gap: 42px;
  padding: 64px clamp(24px, 6vw, 88px) 34px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-brand strong {
  color: var(--white);
  font-size: 13px;
  letter-spacing: 0.13em;
}

.footer-company {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-company a {
  width: max-content;
  color: var(--white);
}

.footer-links {
  display: flex;
  gap: 22px;
  color: var(--white);
}

.footer-note {
  grid-column: 1 / -1;
  margin: 26px 0 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

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

.motion-enabled .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.motion-enabled .reveal.is-visible {
  opacity: 1;
  transform: none;
}

.legal-shell {
  min-height: 100svh;
  background: var(--white);
}

.legal-header {
  position: static;
  border-color: var(--line);
  background: var(--paper);
  backdrop-filter: none;
}

.legal-page {
  max-width: 940px;
  margin: 0 auto;
  padding: clamp(72px, 10vw, 132px) 24px clamp(100px, 12vw, 160px);
}

.legal-page h1 {
  max-width: 820px;
  margin: 24px 0 26px;
  font-size: clamp(48px, 7vw, 84px);
  font-weight: 550;
  letter-spacing: -0.055em;
  line-height: 1;
}

.legal-intro {
  max-width: 760px;
  margin: 0 0 76px;
  color: var(--ink-soft);
  font-size: clamp(19px, 2.2vw, 24px);
}

.legal-meta {
  color: var(--muted);
  font-size: 13px;
}

.legal-section {
  display: grid;
  grid-template-columns: minmax(180px, 0.32fr) minmax(0, 0.68fr);
  gap: 40px;
  padding: 42px 0;
  border-top: 1px solid var(--line);
}

.legal-section h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -0.015em;
}

.legal-section h3 {
  margin: 28px 0 8px;
  font-size: 17px;
}

.legal-section p,
.legal-section ul {
  margin-top: 0;
  color: var(--ink-soft);
}

.legal-section ul {
  padding-left: 1.2em;
}

.legal-section li + li {
  margin-top: 9px;
}

.legal-note {
  padding: 22px 24px;
  border-left: 3px solid var(--vermillion);
  background: var(--paper);
}

.legal-back {
  display: inline-flex;
  margin-top: 44px;
  font-weight: 680;
}

.not-found {
  display: grid;
  min-height: calc(100svh - var(--header-height));
  place-items: center;
  padding: 64px 24px;
  text-align: center;
}

.not-found strong {
  display: block;
  color: var(--vermillion);
  font-size: 13px;
  letter-spacing: 0.14em;
}

.not-found h1 {
  margin: 18px 0 22px;
  font-size: clamp(58px, 10vw, 118px);
  font-weight: 550;
  letter-spacing: -0.065em;
  line-height: 0.95;
}

.not-found p {
  max-width: 560px;
  margin: 0 auto 34px;
  color: var(--muted);
  font-size: 19px;
}

:focus-visible {
  outline: 2px solid var(--vermillion);
  outline-offset: 4px;
}

@media (max-width: 1080px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 74px;
    min-height: auto;
  }

  .hero-copy {
    max-width: 900px;
  }

  .hero-visual {
    max-width: 760px;
    margin-left: auto;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

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

  .operating-loop li:nth-child(odd) {
    border-left: 1px solid var(--line);
  }

  .operating-loop li:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .operating-loop li:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 780px) {
  :root {
    --header-height: 64px;
  }

  body {
    font-size: 16px;
  }

  .site-header {
    padding: 0 18px;
  }

  .brand {
    gap: 10px;
  }

  .brand-company {
    font-size: 11px;
  }

  .brand-product {
    display: none;
  }

  .hero {
    padding: 70px 22px 92px;
  }

  .hero h1,
  body[data-language="en"] .hero h1 {
    font-size: clamp(47px, 14vw, 69px);
    letter-spacing: -0.06em;
  }

  .hero-lede {
    font-size: 18px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .contact-panel {
    padding: 24px 18px;
  }

  .intent-switcher,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .intent-switcher {
    border-radius: 22px;
  }

  .intent-switcher button {
    border-radius: 17px;
  }

  .form-actions {
    display: grid;
  }

  .counsel-card {
    padding: 24px 20px;
  }

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

  .evidence-grid > div,
  .evidence-grid > div + div {
    padding: 21px 0;
    border-left: 0;
  }

  .evidence-grid > div + div {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
  }

  .section-dark,
  .section-light,
  .section-paper,
  .final-cta {
    padding: 92px 22px;
  }

  .statement-inner,
  .section-heading,
  .thesis-grid,
  .stage,
  .company-grid,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .statement-inner h2,
  .section-heading h2,
  .cta-inner h2 {
    font-size: clamp(42px, 13vw, 64px);
  }

  .operating-loop {
    grid-template-columns: 1fr;
    margin-top: 68px;
  }

  .operating-loop li,
  .operating-loop li:first-child,
  .operating-loop li:nth-child(odd) {
    min-height: auto;
    padding: 25px 22px 34px;
    border-top: 0;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .operating-loop li:last-child {
    grid-column: auto;
  }

  .operating-loop h3 {
    margin-top: 34px;
  }

  .ledger {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .ledger i {
    width: 1px;
    height: 28px;
  }

  .ledger div {
    width: 108px;
  }

  .principles-grid,
  .trust-rules {
    grid-template-columns: 1fr;
  }

  .principles-grid article,
  .trust-rules article {
    min-height: auto;
  }

  .rule-mark {
    margin-bottom: 34px;
  }

  .policy-link {
    text-align: left;
  }

  .stage-copy h2,
  .company-grid .section-heading h2 {
    font-size: clamp(40px, 12vw, 60px);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    padding: 54px 22px 28px;
  }

  .footer-note {
    grid-column: auto;
  }

  .legal-page {
    padding-right: 22px;
    padding-left: 22px;
  }

  .legal-section {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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

@media print {
  .site-header,
  .hero-actions,
  .feedback-row {
    display: none;
  }

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