:root {
  --paper: #f6f5f0;
  --ink: #20382c;
  --muted: #747c70;
  --orange: #f65b2b;
  --line: #d9dcd1;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
a,
button {
  touch-action: manipulation;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 5px;
}
::selection {
  background: #ffc4a8;
  color: var(--ink);
}
.wrap {
  max-width: 1280px;
  width: calc(100% - 112px);
  margin: auto;
}
.mono {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
}
.header {
  height: 94px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding: 0 56px;
  gap: 30px;
  background: rgba(246, 245, 240, 0.96);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand strong {
  font-size: 28px;
  letter-spacing: 0.1em;
  line-height: 1.2;
}
.brand strong > span {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  margin-top: 5px;
}
.brand-mark {
  width: 34px;
  height: 35px;
  position: relative;
  display: block;
}
.brand-mark i {
  position: absolute;
  background: var(--orange);
  display: block;
  transform: skewY(-20deg);
}
.brand-mark i:nth-child(1) {
  width: 10px;
  height: 30px;
  top: 5px;
}
.brand-mark i:nth-child(2) {
  width: 20px;
  height: 9px;
  left: 14px;
  top: 0;
}
.brand-mark i:nth-child(3) {
  width: 20px;
  height: 9px;
  left: 14px;
  top: 17px;
}
.header nav {
  display: flex;
  gap: 36px;
  font-size: 16px;
}
.header nav a:hover,
.text-link:hover {
  color: var(--orange);
}
.header-cta {
  font-size: 16px;
  border: 1px solid var(--ink);
  padding: 12px 17px;
  display: flex;
  gap: 26px;
  align-items: center;
}
.header-cta:hover {
  background: var(--ink);
  color: var(--paper);
}
.menu-toggle {
  display: none;
}
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 55px;
  padding-top: 66px;
  padding-bottom: 58px;
  align-items: center;
}
.eyebrow {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.09em;
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
}
.status-dot {
  width: 6px;
  height: 6px;
  display: inline-block;
  background: #699377;
  border-radius: 50%;
  flex-shrink: 0;
}
.eyebrow-line {
  width: 20px;
  height: 1px;
  background: #bbc5b6;
}
.hero .eyebrow {
  font-size: 12px;
  white-space: nowrap;
}
.hero h1 {
  font-size: clamp(51px, 4.0vw, 76px);
  line-height: 1.19;
  letter-spacing: -0.05em;
  font-weight: 650;
  margin: 30px 0 24px;
}
.hero h1 > span {
  color: var(--orange);
}
.period {
  color: var(--ink);
  margin-left: 4px;
}
.hero-lead {
  font-size: 26px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  margin: 0 0 17px;
}
.muted {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}
.hero-description {
  font-size: 16px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 30px;
}
.button {
  border: 0;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 17px 21px;
  font-size: 16px;
  font-weight: 550;
  transition:
    background 0.2s,
    transform 0.2s;
}
.button:hover {
  transform: translateY(-2px);
}
.primary {
  background: var(--orange);
  color: #fff;
}
.primary:hover {
  background: #db491b;
}
.button span {
  font-size: 21px;
}
.text-link {
  display: inline-flex;
  gap: 18px;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
}
.hero-note {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--muted);
  margin-top: 29px;
}
.hero-note b {
  font-weight: 400;
  color: #aab3a3;
}
.machine-panel {
  height: 510px;
  border: 1px solid #d4d9cc;
  background: #ecefe5;
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.panel-top,
.panel-bottom {
  position: absolute;
  left: 22px;
  right: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 2;
}
.panel-top {
  top: 20px;
  font-size: 13px;
}
.panel-top > span:first-child {
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel-top .mono {
  font-size: 12px;
  color: var(--muted);
}
.technical-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(#b9c4b32a 1px, transparent 1px),
    linear-gradient(90deg, #b9c4b32a 1px, transparent 1px);
  background-size: 27px 27px;
  mask-image: linear-gradient(transparent, #000 20%);
}
.drawing-label {
  position: absolute;
  top: 69px;
  left: 25px;
  font-size: 12px;
  line-height: 1.7;
}
.drawing-label span {
  font-family: system-ui;
  font-size: 12px;
  color: var(--muted);
}
.machine-art {
  position: absolute;
  width: 110%;
  left: -6%;
  top: 54px;
}
.signal {
  position: absolute;
  top: 142px;
  right: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  background: #f9faf4ed;
  border: 1px solid #d3dacc;
  box-shadow: 0 8px 22px #20382c09;
  z-index: 3;
}
.signal-icon {
  font-size: 26px;
  color: var(--orange);
}
.signal strong {
  font-size: 13px;
  display: block;
  font-weight: 500;
}
.signal .mono {
  font-size: 11px;
  display: block;
  color: var(--muted);
  margin-top: 5px;
}
.signal svg {
  width: 64px;
  color: #6c937a;
}
.ai-notice {
  position: absolute;
  bottom: 66px;
  right: 23px;
  left: 52px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: #fffdf7;
  padding: 17px;
  border: 1px solid #d6dcd0;
  box-shadow: 0 10px 30px #20382c0b;
}
.ai-symbol {
  background: #ffeee4;
  color: var(--orange);
  width: 33px;
  height: 33px;
  display: grid;
  place-items: center;
  font-size: 26px;
}
.ai-notice strong {
  font-size: 14px;
}
.ai-notice p {
  font-size: 13px;
  margin: 6px 0 0;
  color: var(--muted);
}
.notice-arrow {
  margin-left: auto;
  color: var(--orange);
}
.panel-bottom {
  bottom: 22px;
  color: var(--muted);
  font-size: 11px;
}
.trust-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  gap: 20px;
}
.strip-inner > span {
  font-size: 14px;
  color: var(--muted);
}
.strip-inner strong {
  font-size: 17px;
  font-weight: 500;
  white-space: nowrap;
}
.strip-inner i {
  font-size: 15px;
  font-style: normal;
  color: var(--orange);
  margin-left: 12px;
}
.section {
  padding-top: 88px;
  padding-bottom: 88px;
}
.section-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.section-top .eyebrow {
  color: var(--orange);
}
.section-index {
  color: #8a9484;
  font-size: 12px;
}
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  margin: 26px 0 43px;
}
.section-heading h2,
h2 {
  font-size: clamp(33px, 3.2vw, 46px);
  line-height: 1.35;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0;
}
.section-heading > p {
  width: 33%;
  margin: 0;
}
.layer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.layer {
  border: 1px solid var(--line);
  padding: 25px 26px 0;
  display: flex;
  flex-direction: column;
}
.layer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
}
.layer-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid #c4cdbd;
  font-size: 29px;
  color: var(--ink);
}
.layer h3 {
  font-size: 24px;
  font-weight: 550;
  margin: 28px 0 13px;
}
.layer > p {
  font-size: 15px;
  line-height: 1.95;
  color: var(--muted);
  margin: 0;
}
.tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 24px 0 25px;
}
.tags span {
  border: 1px solid #d7dcce;
  padding: 5px 7px;
  font-size: 12px;
}
.layer-footer {
  border-top: 1px solid var(--line);
  padding: 17px 0;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  margin-top: auto;
}
.layer-footer span {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}
.layer-accent {
  background: #eceee3;
  border-top: 2px solid var(--orange);
}
.layer-accent .layer-icon {
  color: var(--orange);
  border-color: #d2c5ad;
}
.foundation {
  margin-top: 15px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 25px;
}
.foundation-icon {
  font-size: 24px;
  color: var(--orange);
}
.foundation strong {
  font-size: 15px;
}
.foundation p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}
.foundation-end {
  margin-left: auto;
  font-size: 13px;
}
.foundation-end > span {
  margin-left: 18px;
  color: var(--orange);
}
.scenario-section {
  background: #eceedf;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.scene-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid #c9d0bf;
  gap: 25px;
}
.scene-tabs button {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 19px 0;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: #7d8776;
  text-align: left;
  font-family: var(--mono);
  font-size: 14px;
}
.scene-tabs button span {
  flex: 1;
  font-family: system-ui;
  font-size: 17px;
}
.scene-tabs button[aria-selected="true"] {
  color: var(--ink);
  border-color: var(--orange);
}
.scene-tabs button[aria-selected="true"] > span {
  font-weight: 600;
}
.scene-content {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 70px;
  margin-top: 45px;
  align-items: center;
  min-height: 360px;
}
.pill {
  display: inline-block;
  color: var(--orange);
  border: 1px solid #e1bca5;
  padding: 5px 8px;
  font-size: 12px;
}
.scene-copy h3 {
  font-size: 30px;
  font-weight: 550;
  line-height: 1.45;
  margin: 19px 0 15px;
}
.scene-copy > p {
  font-size: 15px;
  line-height: 1.95;
  color: var(--muted);
  max-width: 350px;
}
.scene-copy ul {
  padding: 0;
  list-style: none;
  margin: 20px 0 24px;
}
.scene-copy li {
  font-size: 14px;
  margin: 12px 0;
  line-height: 1.7;
  display: flex;
  gap: 10px;
}
.scene-copy li:before {
  content: "↗";
  color: var(--orange);
}
.demo-window {
  border: 1px solid #cad1c2;
  background: #f8f9f2;
  box-shadow: 0 12px 30px #243b2b05;
  min-width: 0;
}
.demo-header {
  height: 47px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 18px;
  font-size: 13px;
}
.window-dots {
  display: flex;
  gap: 4px;
}
.window-dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #c6cebd;
}
.demo-label {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
  border: 1px solid #d9dfd1;
  padding: 3px 6px;
}
#demo-body {
  padding: 22px;
  min-height: 270px;
}
.demo-foot {
  font-size: 12px;
  color: var(--muted);
  padding: 14px 20px;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 8px;
  align-items: center;
}
.event-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 23px;
}
.event-title strong {
  font-size: 17px;
  font-weight: 550;
}
.event-title span {
  font-size: 12px;
  color: var(--orange);
  background: #ffebe0;
  padding: 5px 8px;
}
.event {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 14px;
  font-size: 14px;
  position: relative;
  padding-bottom: 23px;
}
.event:last-child {
  padding-bottom: 0;
}
.event time {
  font: 13px var(--mono);
  color: #869080;
  padding-top: 3px;
}
.event > div {
  padding-left: 19px;
  border-left: 1px solid #d5ddcc;
  position: relative;
}
.event > div:before {
  content: "";
  width: 5px;
  height: 5px;
  position: absolute;
  left: -3px;
  top: 6px;
  border-radius: 50%;
  background: #819a79;
}
.event:first-of-type > div:before {
  background: var(--orange);
}
.event strong {
  font-weight: 500;
  font-size: 14px;
}
.event p {
  color: var(--muted);
  font-size: 13px;
  margin: 6px 0 0;
  line-height: 1.6;
}
.mini-source {
  font: 11px var(--mono);
  color: #87927e;
  margin-top: 20px;
}
.order-row {
  display: flex;
  gap: 12px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  font-size: 14px;
}
.order-row span:nth-child(2) {
  margin-left: auto;
  color: var(--muted);
  font-size: 13px;
}
.order-row i {
  width: 6px;
  height: 6px;
  background: #7b9976;
  border-radius: 50%;
  flex-shrink: 0;
}
.order-row.risk i {
  background: var(--orange);
}
.order-row.risk span:nth-child(2) {
  color: var(--orange);
}
.reconcile {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 20px;
  padding: 13px;
  background: #ecefe5;
  font-size: 13px;
}
.reconcile b {
  font-size: 15px;
  color: var(--orange);
  font-weight: 500;
}
.chat-question {
  background: #e9ede2;
  padding: 12px 15px;
  font-size: 15px;
  margin-bottom: 14px;
}
.chat-answer {
  border-left: 2px solid var(--orange);
  padding: 0 0 0 16px;
  font-size: 14px;
  line-height: 1.9;
}
.chat-answer strong {
  font-weight: 550;
}
.chat-answer p {
  margin: 6px 0;
  color: var(--muted);
}
.chat-source {
  font-size: 12px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
  margin-top: 15px;
  color: var(--muted);
}
.principle {
  padding: 72px 0;
  text-align: center;
}
.principle .eyebrow {
  justify-content: center;
  color: var(--muted);
  font-size: 13px;
}
.principle > p {
  font-size: clamp(26px, 3.6vw, 49px);
  font-weight: 550;
  letter-spacing: -0.02em;
  margin: 25px 0 18px;
  white-space: nowrap;
}
.principle > p span {
  font-size: 25px;
  color: #a3aa98;
  margin: 0 24px;
  font-weight: 400;
}
.principle > p em {
  font-style: normal;
  color: var(--orange);
}
.principle > div {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
}
.research-section {
  background: #20382c;
  color: #f1f2e9;
}
.research-section .section-top .eyebrow {
  color: #ffa378;
}
.research-section .muted {
  color: #aab9a9;
}
.research-section .section-index {
  color: #8fa28e;
}
.research-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.research-card {
  border: 1px solid #52664f;
}
.research-visual {
  position: relative;
  height: 225px;
  overflow: hidden;
  border-bottom: 1px solid #52664f;
  background-size: 23px 23px;
  background-image:
    linear-gradient(#69825d22 1px, transparent 1px),
    linear-gradient(90deg, #69825d22 1px, transparent 1px);
  background-color: #263f31;
}
.research-visual svg {
  width: 100%;
  height: 100%;
  padding: 10px;
}
.visual-label {
  position: absolute;
  top: 17px;
  left: 19px;
  color: #aab6a0;
  font-size: 11px;
}
.research-body {
  padding: 25px 28px;
}
.research-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #aebba6;
}
.research-meta .pill {
  color: #b2c0a7;
  border-color: #536a4d;
  font-size: 11px;
}
.research-body h3 {
  font-size: 26px;
  font-weight: 500;
  margin: 22px 0 13px;
}
.research-body > p {
  font-size: 15px;
  line-height: 1.95;
  color: #aebba6;
  margin: 0;
}
.research-flow {
  border-top: 1px solid #52664f;
  display: flex;
  gap: 15px;
  padding-top: 20px;
  margin-top: 23px;
  font-size: 13px;
  align-items: center;
}
.research-flow span {
  color: #ff986b;
}
.research-note {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
  margin: 20px 0 0;
}
.research-section .research-note {
  color: #93a48d;
}
.roadmap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 38px;
}
.roadmap article {
  border-top: 1px solid #aebaa4;
  padding-top: 22px;
  position: relative;
}
.roadmap article:before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--orange);
}
.roadmap-step {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.roadmap-step > span {
  font: 44px var(--mono);
  color: #a4b29b;
}
.roadmap-step > p {
  font-size: 13px;
  color: var(--muted);
}
.roadmap h3 {
  font-size: 24px;
  font-weight: 550;
  margin: 25px 0 13px;
}
.roadmap article > p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
  min-height: 48px;
  max-width: 290px;
}
.roadmap article > div:last-child {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 15px;
  margin-top: 24px;
}
.roadmap article > div:last-child span {
  font-size: 12px;
  color: var(--orange);
}
.start-section {
  background: #ecebdf;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 70px 0;
}
.start-layout {
  display: grid;
  grid-template-columns: 1fr 0.78fr;
  gap: 100px;
  align-items: center;
}
.start-layout h2 {
  margin-top: 25px;
  font-size: 47px;
}
.start-layout > div > p:not(.eyebrow) {
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
  margin-top: 22px;
}
.start-points {
  display: flex;
  gap: 25px;
  margin-top: 36px;
  font-size: 14px;
  color: #62745d;
}
.brief-form {
  background: #f8f7f1;
  border: 1px solid #d5d9cb;
  padding: 29px;
}
.brief-form h3 {
  font-size: 22px;
  font-weight: 550;
  margin: 0 0 10px;
}
.brief-form > p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.8;
  margin: 0 0 21px;
}
.brief-form label {
  font-size: 14px;
  display: block;
  margin: 15px 0 8px;
}
.brief-form label span {
  color: var(--muted);
  font-size: 12px;
  margin-left: 7px;
}
.brief-form input,
.brief-form select,
.brief-form textarea {
  background: var(--paper);
  border: 1px solid #d8ddcf;
  padding: 11px 12px;
  width: 100%;
  color: var(--ink);
  font-size: 14px;
  border-radius: 0;
}
.brief-form textarea {
  resize: vertical;
}
.brief-form .button {
  width: 100%;
  margin-top: 18px;
}
.brief-form > .form-note {
  font-size: 12px;
  margin: 11px 0 0;
}
.brief-form #form-status {
  margin: 8px 0 0;
  color: var(--ink);
}
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding-top: 40px;
  padding-bottom: 40px;
}
.footer > p {
  font-size: 14px;
  line-height: 1.9;
  margin: 0;
}
.footer > p > span {
  font-size: 12px;
  color: var(--muted);
}
.footer > div {
  display: flex;
  gap: 22px;
  font-size: 13px;
  align-items: center;
}
.footer .mono {
  color: var(--muted);
  font-size: 12px;
}
.mobile-only {
  display: none;
}
.skip {
  position: fixed;
  top: -60px;
  left: 20px;
  background: var(--orange);
  color: white;
  padding: 10px 20px;
  z-index: 100;
}
.skip:focus {
  top: 10px;
}
@media (min-width: 1500px) {
  .hero {
    padding-top: 82px;
    padding-bottom: 80px;
  }
  .machine-panel {
    height: 540px;
  }
}
@media (max-width: 1100px) {
  .wrap {
    width: calc(100% - 64px);
  }
  .header {
    padding: 0 32px;
    height: 80px;
  }
  .header nav {
    gap: 22px;
  }
  .hero {
    gap: 30px;
  }
  .hero .eyebrow {
    font-size: 11px;
    letter-spacing: 0;
  }
  .eyebrow-line {
    width: 12px;
  }
  .hero h1 {
    font-size: 57px;
  }
  .hero-lead {
    font-size: 24px;
  }
  .machine-panel {
    height: 470px;
  }
  .machine-art {
    top: 90px;
  }
  .signal {
    top: 120px;
  }
  .hero-actions {
    gap: 18px;
  }
  .button {
    padding: 15px;
    font-size: 15px;
  }
  .text-link {
    font-size: 14px;
    gap: 10px;
  }
  .strip-inner > span {
    max-width: 100px;
    line-height: 1.7;
  }
  .strip-inner strong {
    font-size: 15px;
  }
  .strip-inner i {
    margin-left: 5px;
  }
  .layer {
    padding: 22px 20px 0;
  }
  .scene-content {
    gap: 35px;
  }
  .scene-copy h3 {
    font-size: 26px;
  }
  .start-layout {
    gap: 55px;
  }
  .start-layout h2 {
    font-size: 42px;
  }
  .footer > div {
    gap: 15px;
  }
  .research-flow {
    gap: 10px;
  }
}
@media (max-width: 800px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .header {
    padding: 0 20px;
    height: 74px;
    gap: 15px;
  }
  .brand strong {
    font-size: 24px;
  }
  .brand-mark {
    transform: scale(0.86);
    transform-origin: left center;
    width: 29px;
  }
  .brand {
    gap: 7px;
  }
  .brand strong > span {
    font-size: 10px;
  }
  .header-cta {
    font-size: 14px;
    padding: 10px;
    gap: 12px;
    margin-left: auto;
  }
  .menu-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: 0;
    font-size: 15px;
    color: var(--ink);
    order: 3;
    padding: 10px 0 10px 8px;
  }
  .header nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 73px;
    background: var(--paper);
    padding: 25px;
    border-bottom: 1px solid var(--line);
    gap: 26px;
    flex-direction: column;
  }
  .header nav.is-open {
    display: flex;
  }
  .hero {
    padding-top: 40px;
    padding-bottom: 40px;
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero .eyebrow {
    font-size: 11px;
  }
  .hero h1 {
    font-size: 64px;
    margin-top: 27px;
  }
  .hero-lead {
    font-size: 24px;
  }
  .hero-description {
    font-size: 15px;
  }
  .hero-note {
    margin-top: 25px;
  }
  .machine-panel {
    height: 480px;
    max-width: 550px;
    width: 100%;
    margin: auto;
  }
  .machine-art {
    top: 40px;
    width: 105%;
    left: -3%;
  }
  .signal {
    top: 135px;
    right: 18px;
  }
  .ai-notice {
    bottom: 65px;
    left: 30px;
    right: 30px;
  }
  .strip-inner {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px 25px;
    padding: 22px 0;
  }
  .strip-inner > span {
    max-width: none;
    width: 100%;
    text-align: center;
    font-size: 13px;
  }
  .strip-inner strong {
    font-size: 15px;
  }
  .section {
    padding: 55px 0;
  }
  .section-index {
    display: none;
  }
  .section-heading {
    gap: 20px;
    margin: 25px 0 30px;
    align-items: flex-start;
  }
  .section-heading h2 {
    font-size: 35px;
  }
  .section-heading > p {
    width: 43%;
    font-size: 14px;
  }
  .layer-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .layer {
    padding: 23px 24px 0;
  }
  .layer h3 {
    margin: 20px 0 10px;
  }
  .layer > p {
    font-size: 15px;
  }
  .tags {
    margin: 18px 0;
  }
  .foundation {
    flex-wrap: wrap;
    gap: 12px;
    padding: 18px 20px;
  }
  .foundation p {
    font-size: 13px;
  }
  .foundation-end {
    width: 100%;
    padding-left: 30px;
    font-size: 12px;
  }
  .scene-tabs {
    gap: 12px;
  }
  .scene-tabs button {
    gap: 7px;
    font-size: 12px;
    padding: 15px 0;
    flex-wrap: wrap;
  }
  .scene-tabs button span {
    font-size: 15px;
    flex-basis: 72%;
  }
  .scene-content {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-top: 30px;
  }
  .scene-copy h3 {
    font-size: 30px;
  }
  .scene-copy > p {
    max-width: none;
  }
  .scene-copy li {
    font-size: 14px;
  }
  .scene-copy ul {
    margin: 15px 0 20px;
  }
  .demo-header {
    padding: 0 15px;
    gap: 12px;
  }
  #demo-body {
    padding: 22px;
  }
  .principle {
    padding: 50px 0;
  }
  .principle > p span {
    margin: 0 12px;
    font-size: 18px;
  }
  .principle > p {
    font-size: 31px;
  }
  .principle > div {
    font-size: 14px;
  }
  .research-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .research-visual {
    height: 230px;
  }
  .research-body {
    padding: 24px;
  }
  .research-body h3 {
    font-size: 25px;
  }
  .roadmap {
    gap: 18px;
    grid-template-columns: 1fr;
  }
  .roadmap article {
    padding: 20px 0 22px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 25px;
  }
  .roadmap-step {
    grid-column: 1/-1;
  }
  .roadmap h3 {
    font-size: 23px;
    margin: 20px 0 8px;
  }
  .roadmap article > p {
    grid-column: 1;
    min-height: 0;
    margin: 0;
    line-height: 1.9;
  }
  .roadmap article > div:last-child {
    grid-column: 2;
    grid-row: 2/4;
    align-self: center;
    border-left: 1px solid var(--line);
    padding-left: 20px;
    font-size: 14px;
    line-height: 1.7;
  }
  .roadmap-step > span {
    font-size: 33px;
  }
  .start-section {
    padding: 50px 0;
  }
  .start-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .start-layout h2 {
    font-size: 40px;
  }
  .start-points {
    margin-top: 25px;
    gap: 22px;
    font-size: 13px;
  }
  .brief-form {
    padding: 24px;
  }
  .footer {
    flex-wrap: wrap;
    gap: 25px;
    padding: 30px 0;
  }
  .footer > p {
    font-size: 13px;
  }
  .footer > div {
    border-top: 1px solid var(--line);
    width: 100%;
    padding-top: 20px;
  }
  .footer .mono {
    margin-left: auto;
  }
  .mobile-only {
    display: block;
  }
}
@media (max-width: 420px) {
  .hero h1 {
    font-size: 56px;
  }
  .hero .eyebrow {
    font-size: 10px;
  }
  .machine-panel {
    height: 390px;
  }
  .machine-art {
    top: 50px;
  }
  .signal {
    top: 98px;
    right: 10px;
    padding: 8px;
    gap: 7px;
  }
  .signal svg {
    width: 45px;
  }
  .ai-notice {
    left: 15px;
    right: 15px;
    bottom: 55px;
    padding: 13px;
  }
  .ai-notice p {
    font-size: 12px;
  }
  .drawing-label {
    top: 55px;
    font-size: 11px;
  }
  .panel-bottom {
    font-size: 10px;
    left: 16px;
    right: 16px;
  }
  .section-heading {
    flex-direction: column;
    gap: 18px;
  }
  .section-heading > p {
    width: 100%;
    font-size: 15px;
  }
  .section-heading > p br {
    display: none;
  }
  .scene-tabs button {
    gap: 5px;
  }
  .scene-tabs button span {
    font-size: 13px;
  }
  .scene-tabs button {
    font-size: 11px;
  }
  .principle > p {
    font-size: 26px;
  }
  .principle > p span {
    margin: 0 6px;
    font-size: 17px;
  }
  .header-cta {
    font-size: 13px;
    gap: 7px;
  }
  .menu-toggle {
    font-size: 14px;
  }
  .header {
    gap: 8px;
  }
  .hero-actions {
    gap: 20px;
  }
  .hero-note {
    font-size: 12px;
    gap: 8px;
  }
  .foundation p {
    font-size: 12px;
  }
  .demo-foot {
    font-size: 11px;
  }
  .research-visual {
    height: 200px;
  }
  .start-layout h2 {
    font-size: 37px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    transition: none !important;
    animation: none !important;
  }
}