:root {
  --paper: #f2efe7;
  --paper-deep: #e8e3d8;
  --paper-light: #faf8f3;
  --ink: #15211d;
  --ink-soft: #2d3934;
  --muted: #67706b;
  --line: rgba(21, 33, 29, 0.14);
  --line-strong: rgba(21, 33, 29, 0.24);
  --orange: #f25c37;
  --orange-soft: #ffdfd4;
  --green: #174d45;
  --green-light: #2d7165;
  --acid: #d8ff59;
  --white: #fffdf8;
  --shadow-sm: 0 8px 28px rgba(21, 33, 29, 0.07);
  --shadow-lg: 0 28px 80px rgba(8, 25, 21, 0.14);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --section-pad: clamp(78px, 10vw, 148px);
  --shell: min(1240px, calc(100vw - 48px));
  --serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

button,
input,
textarea,
select {
  font: inherit;
}

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

svg {
  display: block;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--white);
  border-radius: 8px;
  transform: translateY(-160%);
}

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

.page-grain {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    radial-gradient(rgba(21, 33, 29, 0.06) 0.55px, transparent 0.55px),
    radial-gradient(rgba(21, 33, 29, 0.035) 0.55px, transparent 0.55px);
  background-size: 5px 5px, 7px 7px;
  background-position: 0 0, 2px 3px;
  mix-blend-mode: multiply;
}

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

.section-block {
  padding-block: var(--section-pad);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: rgba(242, 239, 231, 0.88);
  backdrop-filter: blur(18px);
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 6px 22px rgba(21, 33, 29, 0.05);
}

.header-inner {
  width: var(--shell);
  height: 76px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: max-content;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px 11px 11px 3px;
  background: var(--ink);
  color: var(--acid);
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
}

.brand-copy {
  display: grid;
  gap: 1px;
}

.brand-copy strong {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.04em;
}

.brand-copy small {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.desktop-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.6vw, 38px);
  color: var(--ink-soft);
  font-size: 13px;
}

.desktop-nav a,
.footer-links a {
  position: relative;
}

.desktop-nav a::after,
.footer-links a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -5px;
  left: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.desktop-nav a:hover::after,
.footer-links a:hover::after {
  transform: scaleX(1);
}

.header-action {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.header-action svg {
  width: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.header-action:hover {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
}

.menu-toggle > span:not(.sr-only) {
  display: block;
  width: 17px;
  height: 1.5px;
  margin: 4px auto;
  background: var(--ink);
  transition: transform 180ms ease;
}

.mobile-nav {
  width: var(--shell);
  margin: 0 auto 18px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper-light);
  box-shadow: var(--shadow-sm);
}

.mobile-nav a {
  display: block;
  padding: 13px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.mobile-nav a:last-child {
  border-bottom: 0;
  color: var(--orange);
  font-weight: 700;
}

.hero {
  min-height: calc(100svh - 76px);
  padding-block: clamp(54px, 7.5vw, 106px) clamp(60px, 7vw, 94px);
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(460px, 0.88fr);
  align-items: center;
  gap: clamp(40px, 7vw, 100px);
}

.eyebrow,
.section-index {
  margin: 0;
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}

.eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 5px var(--orange-soft);
}

.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(50px, 6.1vw, 92px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.06em;
}

.hero h1::after {
  content: "";
  display: inline-block;
  width: 0.23em;
  height: 0.23em;
  margin-left: 0.1em;
  border-radius: 50%;
  background: var(--orange);
  vertical-align: 0.06em;
}

.hero-lead {
  max-width: 620px;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: clamp(17px, 1.45vw, 21px);
  line-height: 1.9;
  letter-spacing: 0.01em;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 25px;
  margin-top: 36px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 20px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button svg {
  width: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
}

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

.button-primary {
  background: var(--orange);
  color: #1b0e09;
  box-shadow: 0 12px 30px rgba(242, 92, 55, 0.23);
}

.button-primary:hover {
  box-shadow: 0 16px 36px rgba(242, 92, 55, 0.3);
}

.text-link {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
}

.text-link span {
  display: inline-block;
  margin-left: 6px;
  color: var(--orange);
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translateY(4px);
}

.audience-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  max-width: 630px;
  margin: 58px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.audience-strip > div {
  padding-right: 20px;
  border-right: 1px solid var(--line);
}

.audience-strip > div + div {
  padding-left: 20px;
}

.audience-strip > div:last-child {
  border-right: 0;
}

.audience-strip dt {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.audience-strip dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
}

.question-console {
  position: relative;
  padding: clamp(24px, 3vw, 38px);
  border-radius: var(--radius-lg);
  background: var(--green);
  color: var(--white);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.question-console::before {
  content: "";
  position: absolute;
  top: -170px;
  right: -170px;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(216, 255, 89, 0.18);
  border-radius: 50%;
  box-shadow: 0 0 0 50px rgba(216, 255, 89, 0.035), 0 0 0 100px rgba(216, 255, 89, 0.02);
  pointer-events: none;
}

.console-topline,
.answer-card-head,
.mainline-detail-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.console-kicker {
  position: relative;
  margin: 36px 0 18px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.question-switcher {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.question-tab {
  padding: 9px 11px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  font-size: 12px;
  transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}

.question-tab:hover,
.question-tab.is-active {
  border-color: var(--acid);
  background: var(--acid);
  color: var(--ink);
}

.answer-card {
  position: relative;
  margin-top: 18px;
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  background: rgba(5, 26, 22, 0.46);
  backdrop-filter: blur(10px);
  transition: opacity 150ms ease, transform 150ms ease;
}

.answer-card.is-updating {
  opacity: 0.18;
  transform: translateY(4px);
}

.answer-label {
  color: var(--acid);
}

.answer-status {
  padding: 5px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.7);
  font-size: 10px;
}

.answer-card h2 {
  margin: 28px 0 12px;
  font-family: var(--serif);
  font-size: clamp(26px, 3.2vw, 39px);
  line-height: 1.26;
  letter-spacing: -0.025em;
}

.answer-card > p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  line-height: 1.85;
}

.answer-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
}

.answer-flow span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 9px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.88);
  font-size: 11px;
}

.answer-flow span:not(:last-child)::after {
  content: "→";
  margin-left: 2px;
  color: var(--acid);
}

.answer-boundary {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.answer-boundary span {
  color: var(--acid);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.answer-boundary p {
  margin: 7px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 12px;
  line-height: 1.7;
}

.answer-evidence {
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.4);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
}

.section-heading {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  margin-bottom: clamp(42px, 6vw, 76px);
}

.section-heading .section-index {
  padding-top: 12px;
}

.section-heading h2 {
  max-width: 860px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(36px, 4.8vw, 67px);
  line-height: 1.16;
  letter-spacing: -0.05em;
}

.section-heading > div > p {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.promise-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.promise-card {
  position: relative;
  min-height: 390px;
  padding: clamp(25px, 3.4vw, 44px);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(250, 248, 243, 0.65);
  box-shadow: 0 4px 0 rgba(21, 33, 29, 0.02);
  overflow: hidden;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.promise-card::after {
  content: "";
  position: absolute;
  right: -76px;
  bottom: -90px;
  width: 210px;
  height: 210px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: transform 300ms ease;
}

.promise-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
}

.promise-card:hover::after {
  transform: scale(1.12);
}

.card-number {
  position: absolute;
  top: 26px;
  right: 30px;
  color: rgba(21, 33, 29, 0.16);
  font-family: var(--serif);
  font-size: 53px;
  font-weight: 700;
  line-height: 1;
}

.card-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 46px;
  border-radius: 14px;
  background: var(--orange-soft);
  color: var(--orange);
}

.card-icon svg {
  width: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card-question {
  margin: 0 0 10px;
  color: var(--orange);
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
}

.promise-card h3 {
  max-width: 470px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(23px, 2.3vw, 31px);
  line-height: 1.42;
  letter-spacing: -0.025em;
}

.card-copy {
  max-width: 500px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

.card-bottom {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 7px;
  margin-top: auto;
  padding-top: 30px;
}

.card-bottom span {
  color: var(--muted);
  font-size: 11px;
}

.card-bottom strong {
  color: var(--green);
  font-size: 13px;
  line-height: 1.6;
}

.mainline {
  position: relative;
  background: var(--ink);
  color: var(--white);
}

.mainline::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.2;
  background-image: linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: linear-gradient(to bottom, black, transparent 90%);
  pointer-events: none;
}

.mainline .section-shell {
  position: relative;
}

.section-heading.light .section-index {
  color: var(--acid);
}

.section-heading.light h2 {
  color: var(--white);
}

.section-heading.light > div > p {
  color: rgba(255, 255, 255, 0.57);
}

.mainline-board {
  position: relative;
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.025);
}

.mainline-rail {
  position: absolute;
  top: 105px;
  right: 5%;
  left: 5%;
  height: 1px;
  background: rgba(255, 255, 255, 0.15);
}

.mainline-steps {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.mainline-steps li {
  position: relative;
  padding: 0 10px;
  text-align: center;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.38);
  transition: color 180ms ease;
}

.mainline-steps li::before {
  content: "";
  display: block;
  width: 11px;
  height: 11px;
  margin: 0 auto 18px;
  border: 1px solid currentColor;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 7px var(--ink);
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.mainline-steps li:hover,
.mainline-steps li.is-active {
  color: var(--white);
}

.mainline-steps li.is-active::before {
  color: var(--acid);
  background: var(--acid);
  transform: scale(1.12);
}

.mainline-steps span {
  display: block;
  margin-bottom: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
}

.mainline-steps strong {
  display: block;
  font-family: var(--serif);
  font-size: 16px;
}

.mainline-steps small {
  display: block;
  margin-top: 5px;
  font-size: 10px;
  line-height: 1.45;
}

.mainline-detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.42fr);
  gap: 42px;
  align-items: end;
  margin-top: 76px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.mainline-detail-top {
  grid-column: 1 / -1;
  color: rgba(255, 255, 255, 0.42);
}

.mainline-detail-top span:first-child {
  color: var(--acid);
}

.mainline-detail h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(27px, 3.4vw, 43px);
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.mainline-detail > p {
  margin: 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  line-height: 1.9;
}

.mainline-principle {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: rgba(216, 255, 89, 0.08);
}

.mainline-principle span {
  color: rgba(255, 255, 255, 0.46);
  font-size: 11px;
}

.mainline-principle strong {
  color: var(--acid);
  font-size: 14px;
  text-align: right;
}

.mainline-note {
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.36);
  font-size: 11px;
  line-height: 1.7;
}

.question-list {
  border-top: 1px solid var(--line-strong);
}

.question-row {
  border-bottom: 1px solid var(--line-strong);
}

.question-row summary {
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr) 40px;
  align-items: center;
  gap: 22px;
  min-height: 106px;
  cursor: pointer;
  list-style: none;
}

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

.row-number {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
}

.row-question {
  font-family: var(--serif);
  font-size: clamp(20px, 2.45vw, 32px);
  font-weight: 700;
  line-height: 1.4;
}

.row-toggle {
  position: relative;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: background 180ms ease, border-color 180ms ease;
}

.row-toggle::before,
.row-toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 11px;
  height: 1px;
  background: currentColor;
  transform: translate(-50%, -50%);
}

.row-toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: transform 180ms ease;
}

.question-row[open] .row-toggle {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
}

.question-row[open] .row-toggle::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.row-answer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 30px 60px;
  padding: 0 40px 36px 82px;
  color: var(--muted);
}

.answer-key {
  display: block;
  margin-bottom: 8px;
  color: var(--orange);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.row-answer p {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
}

.row-evidence {
  grid-column: 1 / -1;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px !important;
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.boundary-card {
  min-height: 460px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-top: 4px solid var(--ink);
  border-radius: var(--radius-sm);
  background: var(--paper-light);
}

.boundary-card-verified {
  border-top-color: var(--green-light);
}

.boundary-card-building {
  border-top-color: #e7a72e;
}

.boundary-card-planned {
  border-top-color: var(--orange);
}

.boundary-label {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.boundary-label span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.boundary-card h3 {
  margin: 32px 0 14px;
  font-family: var(--serif);
  font-size: 27px;
  line-height: 1.35;
}

.boundary-card > p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}

.boundary-card dl {
  display: grid;
  gap: 4px;
  margin: auto 0 0;
  padding-top: 28px;
}

.boundary-card dt {
  margin-top: 15px;
  color: var(--ink);
  font-size: 11px;
  font-weight: 700;
}

.boundary-card dd {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.boundary-source {
  margin-top: 24px !important;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 9px !important;
}

.truth-rules {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 40px;
  margin-top: 52px;
  padding-top: 36px;
  border-top: 1px solid var(--line-strong);
}

.truth-title {
  display: grid;
  align-content: start;
  gap: 10px;
}

.truth-title span {
  color: var(--orange);
  font-size: 12px;
  font-weight: 700;
}

.truth-title strong {
  font-family: var(--serif);
  font-size: 25px;
  line-height: 1.5;
}

.truth-rules ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.truth-rules li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.truth-rules li span {
  color: var(--orange);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
}

.truth-rules li p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.75;
}

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

.fit-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.fit-copy {
  padding-right: clamp(16px, 3vw, 36px);
}

.fit-copy h2 {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-size: clamp(34px, 4.2vw, 55px);
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.fit-copy > p:last-child {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

.fit-card {
  min-height: 420px;
  padding: 26px;
  border-radius: var(--radius-md);
  background: var(--paper-light);
}

.fit-card-yes {
  border: 1px solid rgba(23, 77, 69, 0.18);
}

.fit-card-no {
  border: 1px solid rgba(242, 92, 55, 0.2);
}

.fit-tag {
  display: inline-flex;
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.fit-card-yes .fit-tag {
  color: var(--green);
  background: rgba(23, 77, 69, 0.09);
}

.fit-card-no .fit-tag {
  color: #a63d23;
  background: rgba(242, 92, 55, 0.1);
}

.fit-card ul {
  display: grid;
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
}

.fit-card li {
  position: relative;
  padding: 17px 0 17px 25px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.fit-card li::before {
  content: "";
  position: absolute;
  top: 24px;
  left: 1px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green-light);
}

.fit-card-no li::before {
  background: var(--orange);
}

.start {
  padding-top: calc(var(--section-pad) + 24px);
}

.start-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.68fr);
  gap: clamp(36px, 7vw, 90px);
  padding: clamp(32px, 5vw, 68px);
  border-radius: var(--radius-lg);
  background: var(--orange);
  color: var(--ink);
  box-shadow: var(--shadow-lg);
}

.start-copy .section-index {
  color: rgba(21, 33, 29, 0.62);
}

.start-copy h2 {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-size: clamp(40px, 5.2vw, 70px);
  line-height: 1.16;
  letter-spacing: -0.055em;
}

.start-copy > p {
  max-width: 650px;
  margin: 24px 0 0;
  color: rgba(21, 33, 29, 0.72);
  font-size: 15px;
  line-height: 1.9;
}

.start-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 48px 0 0;
  padding: 28px 0 0;
  border-top: 1px solid rgba(21, 33, 29, 0.19);
  list-style: none;
}

.start-steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
}

.start-steps li > span {
  color: rgba(21, 33, 29, 0.48);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
}

.start-steps strong {
  display: block;
  font-size: 14px;
}

.start-steps p {
  margin: 8px 0 0;
  color: rgba(21, 33, 29, 0.65);
  font-size: 12px;
  line-height: 1.75;
}

.start-form {
  align-self: start;
  padding: clamp(24px, 3vw, 34px);
  border-radius: var(--radius-md);
  background: var(--ink);
  color: var(--white);
}

.form-heading {
  display: grid;
  gap: 6px;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.form-heading span {
  color: var(--acid);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.form-heading strong {
  font-family: var(--serif);
  font-size: 22px;
}

.start-form label {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

.start-form label > span {
  color: rgba(255, 255, 255, 0.62);
  font-size: 11px;
}

.start-form em {
  color: rgba(255, 255, 255, 0.38);
  font-style: normal;
}

.start-form input[type="text"],
.start-form select,
.start-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 9px;
  outline: 0;
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
  transition: border-color 150ms ease, background 150ms ease;
}

.start-form input[type="text"],
.start-form select {
  height: 46px;
  padding: 0 13px;
}

.start-form textarea {
  resize: vertical;
  min-height: 92px;
  padding: 12px 13px;
}

.start-form select option {
  color: var(--ink);
}

.start-form input::placeholder,
.start-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.28);
}

.start-form input:focus,
.start-form select:focus,
.start-form textarea:focus {
  border-color: var(--acid);
  background: rgba(255, 255, 255, 0.09);
}

.consent-row {
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 9px !important;
}

.consent-row input {
  margin-top: 3px;
  accent-color: var(--acid);
}

.consent-row > span {
  line-height: 1.55;
}

.start-form .button {
  width: 100%;
  margin-top: 24px;
}

.button-dark {
  background: var(--acid);
  color: var(--ink);
}

.form-note,
.form-result {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.38);
  font-size: 10px;
  line-height: 1.6;
}

.form-result {
  padding: 12px;
  border: 1px solid rgba(216, 255, 89, 0.25);
  border-radius: 9px;
  background: rgba(216, 255, 89, 0.08);
  color: var(--acid);
}

.site-footer {
  padding: 62px 0 28px;
  background: #0d1714;
  color: var(--white);
}

.footer-inner,
.footer-bottom {
  width: var(--shell);
  margin-inline: auto;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 50px;
  padding-bottom: 50px;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.footer-brand .brand-mark {
  color: var(--ink);
  background: var(--acid);
}

.footer-brand strong {
  display: block;
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 22px;
}

.footer-brand p {
  max-width: 430px;
  margin: 0;
  color: rgba(255, 255, 255, 0.46);
  font-size: 13px;
  line-height: 1.7;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, auto));
  gap: 70px;
}

.footer-links > div {
  display: grid;
  align-content: start;
  gap: 11px;
}

.footer-links span {
  margin-bottom: 5px;
  color: var(--acid);
  font-size: 11px;
  font-weight: 700;
}

.footer-links a {
  width: max-content;
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.32);
  font-size: 10px;
  line-height: 1.7;
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom code {
  color: rgba(216, 255, 89, 0.65);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 620ms cubic-bezier(0.22, 1, 0.36, 1), transform 620ms cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .desktop-nav {
    display: none;
  }

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

  .header-action {
    justify-self: end;
  }

  .menu-toggle {
    display: block;
  }

  .hero {
    grid-template-columns: minmax(0, 0.9fr) minmax(430px, 1fr);
    gap: 44px;
  }

  .hero h1 {
    font-size: clamp(48px, 6vw, 74px);
  }

  .promise-card {
    min-height: 420px;
  }

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

  .fit-copy {
    grid-column: 1 / -1;
    padding: 0 0 28px;
  }

  .start-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  :root {
    --shell: min(100% - 32px, 720px);
  }

  .header-inner {
    height: 66px;
    gap: 10px;
  }

  .brand-copy small,
  .header-action {
    display: none;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-block: 56px 72px;
  }

  .hero h1 {
    font-size: clamp(45px, 12vw, 68px);
  }

  .hero-lead {
    font-size: 17px;
  }

  .audience-strip {
    margin-top: 42px;
  }

  .question-console {
    border-radius: 24px;
  }

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

  .section-heading .section-index {
    padding-top: 0;
  }

  .section-heading h2 {
    font-size: clamp(34px, 9vw, 52px);
  }

  .promise-grid,
  .boundary-grid,
  .truth-rules ol,
  .fit-inner {
    grid-template-columns: 1fr;
  }

  .promise-card {
    min-height: 0;
  }

  .card-bottom {
    margin-top: 28px;
  }

  .mainline-steps {
    grid-template-columns: repeat(7, 120px);
    overflow-x: auto;
    padding-bottom: 12px;
    scrollbar-width: thin;
  }

  .mainline-rail {
    display: none;
  }

  .mainline-detail {
    grid-template-columns: 1fr;
    gap: 22px;
    margin-top: 46px;
  }

  .mainline-detail-top {
    grid-column: 1;
  }

  .mainline-principle {
    grid-column: 1;
    align-items: flex-start;
    flex-direction: column;
  }

  .mainline-principle strong {
    text-align: left;
  }

  .question-row summary {
    grid-template-columns: 42px minmax(0, 1fr) 34px;
    gap: 12px;
    min-height: 94px;
  }

  .row-answer {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 0 10px 30px 54px;
  }

  .row-evidence {
    grid-column: 1;
  }

  .boundary-card {
    min-height: 0;
  }

  .boundary-card dl {
    margin-top: 28px;
  }

  .truth-rules {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .fit-card {
    min-height: 0;
  }

  .start-panel {
    padding: 30px 22px;
  }

  .start-steps {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .text-link {
    text-align: center;
  }

  .audience-strip {
    gap: 14px;
  }

  .audience-strip > div,
  .audience-strip > div + div {
    padding: 0;
    border: 0;
  }

  .audience-strip {
    grid-template-columns: 1fr;
  }

  .audience-strip dt {
    margin-bottom: 2px;
  }

  .question-console {
    padding: 20px 16px;
  }

  .question-switcher {
    flex-wrap: nowrap;
    margin-inline: -4px;
    padding: 4px 4px 8px;
    overflow-x: auto;
  }

  .question-tab {
    flex: 0 0 auto;
  }

  .answer-card {
    padding: 20px 16px;
  }

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

  .card-number {
    top: 20px;
    right: 20px;
    font-size: 42px;
  }

  .mainline-board {
    padding: 20px 14px;
  }

  .question-row summary {
    grid-template-columns: 34px minmax(0, 1fr) 30px;
  }

  .row-question {
    font-size: 19px;
  }

  .row-answer {
    padding-left: 46px;
  }

  .start-form {
    padding: 22px 16px;
  }

  .footer-links {
    gap: 30px;
  }
}

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

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

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

/* Product demo: show the actual working surface before asking for belief. */
.product-demo {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  margin: 74px 0 0;
  padding-top: 64px;
  border-top: 1px solid var(--line-strong);
}

.product-demo-copy h3 {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-size: clamp(29px, 3.2vw, 44px);
  line-height: 1.28;
  letter-spacing: -0.035em;
}

.product-demo-kicker {
  margin: 0;
  color: var(--orange);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.product-demo-copy > p:not(.product-demo-kicker) {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

.product-demo-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}

.product-demo-points span {
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--green);
  font-size: 11px;
  font-weight: 700;
}

.product-video-shell {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(21, 33, 29, 0.2);
  border-radius: var(--radius-md);
  background: #091713;
  box-shadow: var(--shadow-lg);
}

.product-video-shell video {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #091713;
}

.video-caption {
  position: absolute;
  bottom: 12px;
  left: 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(9, 23, 19, 0.78);
  color: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(8px);
  font-size: 10px;
}

.video-caption span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 3px rgba(216, 255, 89, 0.14);
}

.product-demo figcaption {
  grid-column: 1 / -1;
  margin: -28px 0 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.7;
}

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

@media (max-width: 820px) {
  .product-demo {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 52px;
    padding-top: 48px;
  }

  .product-demo figcaption {
    margin: 0;
  }

  .boundary-card {
    min-height: 0;
  }
}

/* Brand system v2: calmer materials, stronger hierarchy, more executive presence. */
:root {
  --paper: #f2efe8;
  --paper-deep: #e7e0d5;
  --paper-light: #fbf8f2;
  --ink: #101815;
  --ink-soft: #26322d;
  --muted: #626b66;
  --line: rgba(16, 24, 21, 0.12);
  --line-strong: rgba(16, 24, 21, 0.22);
  --orange: #c64d35;
  --orange-soft: #f0d8d1;
  --green: #103e35;
  --green-light: #2d6c5e;
  --acid: #d7b66d;
  --white: #fffdf8;
  --shadow-sm: 0 12px 36px rgba(10, 22, 18, 0.08);
  --shadow-lg: 0 34px 90px rgba(7, 20, 16, 0.18);
  --radius-sm: 4px;
  --radius-md: 7px;
  --radius-lg: 12px;
}

body {
  background:
    radial-gradient(circle at 88% 7%, rgba(215, 182, 109, 0.12), transparent 25%),
    var(--paper);
}

.page-grain {
  opacity: 0.15;
}

.site-header {
  background: rgba(12, 23, 19, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 32px rgba(8, 20, 16, 0.14);
}

.site-header.is-scrolled {
  background: rgba(10, 20, 17, 0.97);
  border-color: rgba(215, 182, 109, 0.22);
  box-shadow: 0 16px 38px rgba(7, 18, 15, 0.22);
}

.header-inner {
  height: 82px;
}

.brand-mark {
  border-radius: 4px;
  background: var(--acid);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px rgba(16, 24, 21, 0.08);
}

.brand-copy strong {
  color: var(--white);
  letter-spacing: 0.08em;
}

.brand-copy small {
  color: rgba(255, 255, 255, 0.48);
  letter-spacing: 0.14em;
}

.desktop-nav {
  color: rgba(255, 255, 255, 0.68);
}

.desktop-nav a:hover {
  color: var(--white);
}

.desktop-nav a::after {
  background: var(--acid);
}

.header-action {
  border-color: rgba(255, 255, 255, 0.18);
  border-radius: 3px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.035);
}

.header-action:hover {
  color: var(--ink);
  background: var(--acid);
  border-color: var(--acid);
}

.menu-toggle {
  border-color: rgba(255, 255, 255, 0.18);
}

.menu-toggle > span:not(.sr-only) {
  background: var(--white);
}

.mobile-nav {
  border-color: rgba(215, 182, 109, 0.22);
  border-radius: 6px;
  background: #10231e;
  box-shadow: 0 18px 44px rgba(6, 18, 14, 0.28);
}

.mobile-nav a {
  border-color: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.72);
}

.mobile-nav a:last-child {
  color: var(--acid);
}

.scroll-progress {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  overflow: hidden;
  background: transparent;
}

.scroll-progress span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--orange), var(--acid));
}

.hero {
  position: relative;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 0;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(16, 24, 21, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 24, 21, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to right, black, transparent 82%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 10%;
  right: -10%;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(198, 77, 53, 0.1);
  border-radius: 50%;
  box-shadow: 0 0 0 72px rgba(198, 77, 53, 0.025), 0 0 0 142px rgba(215, 182, 109, 0.018);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(54px, 6.4vw, 100px);
  line-height: 1.02;
  letter-spacing: -0.065em;
}

.hero-lead {
  max-width: 660px;
  color: #3f4a45;
}

.button {
  border-radius: 3px;
  min-height: 52px;
  letter-spacing: 0.01em;
}

.button-primary {
  color: var(--white);
  background: linear-gradient(135deg, #ca5138, #a83d29);
  box-shadow: 0 14px 34px rgba(168, 61, 41, 0.25);
}

.button-primary:hover {
  box-shadow: 0 18px 42px rgba(168, 61, 41, 0.32);
}

.button-primary svg {
  transition: transform 180ms ease;
}

.button-primary:hover svg {
  transform: translateX(3px);
}

.text-link {
  color: #33403a;
}

.text-link span {
  color: var(--orange);
}

.audience-strip {
  border-top-color: rgba(16, 24, 21, 0.22);
}

.audience-strip dt {
  color: var(--orange);
  font-weight: 700;
}

.audience-strip dd {
  color: var(--ink);
  font-size: 16px;
}

.question-console {
  border: 1px solid rgba(215, 182, 109, 0.24);
  border-radius: 9px;
  background:
    linear-gradient(145deg, rgba(215, 182, 109, 0.08), transparent 34%),
    linear-gradient(150deg, #123e35 0%, #091d18 72%);
  box-shadow: 0 38px 100px rgba(7, 20, 16, 0.3);
}

.question-console::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--acid), transparent);
  opacity: 0.72;
}

.question-console::before {
  border-color: rgba(215, 182, 109, 0.18);
  box-shadow: 0 0 0 50px rgba(215, 182, 109, 0.025), 0 0 0 100px rgba(215, 182, 109, 0.015);
}

.question-tab {
  border-radius: 3px;
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.025);
}

.question-tab:hover,
.question-tab.is-active {
  border-color: var(--acid);
  background: var(--acid);
  color: var(--ink);
}

.answer-card {
  border-color: rgba(255, 255, 255, 0.11);
  border-radius: 5px;
  background: rgba(4, 19, 15, 0.5);
}

.answer-status {
  border-radius: 2px;
  background: rgba(215, 182, 109, 0.1);
}

.answer-label,
.answer-boundary span {
  color: var(--acid);
}

.answer-flow span {
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.07);
}

.answer-flow span:not(:last-child)::after {
  color: var(--acid);
}

.answer-evidence {
  color: rgba(215, 182, 109, 0.72);
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.02em;
}

.section-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #36574e;
}

.section-index::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}

.section-heading h2 {
  max-width: 900px;
  letter-spacing: -0.055em;
}

.promise-grid {
  gap: 14px;
}

.promise-card {
  --pointer-x: 50%;
  --pointer-y: 50%;
  min-height: 400px;
  border-color: rgba(16, 24, 21, 0.14);
  border-radius: 4px;
  background: linear-gradient(155deg, rgba(255, 253, 248, 0.94), rgba(242, 237, 227, 0.78));
  box-shadow: 0 8px 30px rgba(16, 24, 21, 0.045);
}

.promise-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0;
  background: radial-gradient(420px circle at var(--pointer-x) var(--pointer-y), rgba(215, 182, 109, 0.16), transparent 58%);
  transition: opacity 220ms ease;
  pointer-events: none;
}

.promise-card:hover::before {
  opacity: 1;
}

.promise-card > * {
  position: relative;
  z-index: 1;
}

.promise-card::after {
  right: -66px;
  bottom: -80px;
  width: 190px;
  height: 190px;
  border-color: rgba(198, 77, 53, 0.13);
  border-radius: 0;
  transform: rotate(45deg);
}

.promise-card:hover::after {
  transform: rotate(45deg) scale(1.06);
}

.card-number {
  color: rgba(198, 77, 53, 0.13);
  font-size: 60px;
}

.card-icon {
  border-radius: 3px;
  background: #123e35;
  color: var(--acid);
}

.card-question {
  color: var(--orange);
}

.card-bottom {
  border-top: 1px solid rgba(16, 24, 21, 0.1);
}

.card-bottom strong {
  color: #1a4b40;
}

.product-demo {
  margin-top: 82px;
  padding-top: 72px;
}

.product-demo-kicker {
  color: var(--orange);
}

.product-video-shell {
  border-color: rgba(215, 182, 109, 0.28);
  border-radius: 6px;
  box-shadow: 0 38px 90px rgba(8, 22, 18, 0.24);
}

.product-video-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: inherit;
  pointer-events: none;
}

.video-play {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  border: 0;
  background: linear-gradient(to top, rgba(5, 16, 13, 0.68), rgba(5, 16, 13, 0.2));
  color: var(--white);
  cursor: pointer;
  text-align: left;
  transition: opacity 220ms ease, visibility 220ms ease;
}

.video-play-icon {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(215, 182, 109, 0.68);
  border-radius: 50%;
  background: rgba(9, 25, 20, 0.72);
  box-shadow: 0 0 0 9px rgba(215, 182, 109, 0.08);
  backdrop-filter: blur(8px);
}

.video-play-icon svg {
  width: 25px;
  margin-left: 3px;
  fill: var(--acid);
}

.video-play > span:last-child {
  display: grid;
  gap: 4px;
}

.video-play strong {
  color: var(--white);
  font-family: var(--serif);
  font-size: 19px;
}

.video-play small {
  color: rgba(255, 255, 255, 0.58);
  font-size: 10px;
}

.product-video-shell.is-playing .video-play {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.mainline {
  background:
    radial-gradient(circle at 80% 10%, rgba(215, 182, 109, 0.08), transparent 28%),
    #0b1b17;
}

.mainline-board {
  border-color: rgba(215, 182, 109, 0.16);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.018);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.025);
}

.mainline-rail {
  background: linear-gradient(90deg, transparent, rgba(215, 182, 109, 0.5), transparent);
}

.mainline-steps li::before {
  border-radius: 1px;
  transform: rotate(45deg);
  box-shadow: 0 0 0 7px #0b1b17;
}

.mainline-steps li.is-active::before {
  color: var(--orange);
  background: var(--acid);
  transform: rotate(45deg) scale(1.15);
}

.mainline-principle {
  border: 1px solid rgba(215, 182, 109, 0.16);
  border-radius: 3px;
  background: rgba(215, 182, 109, 0.07);
}

.question-list {
  border-top-color: rgba(16, 24, 21, 0.2);
}

.question-row {
  border-bottom-color: rgba(16, 24, 21, 0.14);
  transition: background 180ms ease;
}

.question-row[open],
.question-row:hover {
  background: rgba(255, 253, 248, 0.48);
}

.question-row summary {
  padding-inline: 10px;
}

.row-question {
  letter-spacing: -0.02em;
}

.row-toggle {
  border-radius: 3px;
}

.question-row[open] .row-toggle {
  border-color: var(--green);
  background: var(--green);
}

.row-answer {
  padding-inline: 92px 50px;
}

.boundary-grid {
  gap: 14px;
}

.boundary-card {
  min-height: 420px;
  border-color: rgba(16, 24, 21, 0.14);
  border-top-width: 3px;
  border-radius: 4px;
  box-shadow: 0 10px 34px rgba(16, 24, 21, 0.05);
}

.boundary-card-verified {
  border-top-color: var(--green-light);
}

.boundary-card-building {
  border-top-color: var(--acid);
}

.boundary-card-planned {
  border-top-color: var(--orange);
}

.truth-rules li {
  border-radius: 3px;
  background: rgba(255, 253, 248, 0.45);
}

.fit {
  background:
    radial-gradient(circle at 14% 20%, rgba(215, 182, 109, 0.11), transparent 31%),
    var(--paper-deep);
}

.fit-card {
  border-radius: 5px;
  box-shadow: 0 14px 40px rgba(16, 24, 21, 0.06);
}

.start-panel {
  border: 1px solid rgba(215, 182, 109, 0.2);
  border-radius: 8px;
  color: var(--white);
  background:
    radial-gradient(circle at 88% 10%, rgba(215, 182, 109, 0.12), transparent 29%),
    linear-gradient(135deg, #16473d 0%, #0b241e 76%);
  box-shadow: 0 40px 100px rgba(7, 20, 16, 0.22);
}

.start-copy .section-index {
  color: var(--acid);
}

.start-copy > p {
  color: rgba(255, 255, 255, 0.64);
}

.start-steps {
  border-top-color: rgba(255, 255, 255, 0.14);
}

.start-steps li > span {
  color: rgba(215, 182, 109, 0.72);
}

.start-steps strong {
  color: var(--white);
}

.start-steps p {
  color: rgba(255, 255, 255, 0.52);
}

.start-form {
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 5px;
  background: var(--paper-light);
  color: var(--ink);
  box-shadow: 0 18px 52px rgba(3, 14, 11, 0.22);
}

.form-heading {
  border-bottom-color: rgba(16, 24, 21, 0.12);
}

.form-heading span {
  color: var(--orange);
}

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

.start-form label > span {
  color: var(--muted);
}

.start-form em {
  color: #919873;
}

.start-form input[type="text"],
.start-form select,
.start-form textarea {
  border-color: rgba(16, 24, 21, 0.16);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
}

.start-form input::placeholder,
.start-form textarea::placeholder {
  color: #959c97;
}

.start-form input:focus,
.start-form select:focus,
.start-form textarea:focus {
  border-color: var(--orange);
  background: var(--white);
}

.consent-row input {
  accent-color: var(--orange);
}

.button-dark {
  color: var(--white);
  background: linear-gradient(135deg, #ca5138, #a83d29);
}

.form-note,
.form-result {
  color: var(--muted);
}

.form-result {
  border-color: rgba(45, 108, 94, 0.22);
  background: rgba(45, 108, 94, 0.08);
  color: var(--green);
}

.site-footer {
  background:
    linear-gradient(180deg, rgba(215, 182, 109, 0.035), transparent 24%),
    #091511;
}

@media (max-width: 1080px) {
  .header-inner {
    height: 72px;
  }
}

@media (max-width: 820px) {
  .header-inner {
    height: 66px;
  }

  .hero h1 {
    font-size: clamp(46px, 12vw, 68px);
  }

  .question-console {
    border-radius: 7px;
  }

  .promise-card {
    border-radius: 4px;
  }

  .product-demo {
    margin-top: 62px;
    padding-top: 54px;
  }

  .video-play {
    gap: 11px;
  }

  .video-play-icon {
    width: 50px;
    height: 50px;
  }

  .video-play strong {
    font-size: 16px;
  }

  .question-row summary {
    padding-inline: 0 6px;
  }

  .row-answer {
    padding-inline: 54px 10px;
  }

  .start-panel {
    border-radius: 6px;
  }
}

@media (max-width: 520px) {
  .header-inner {
    height: 62px;
  }

  .video-play-icon {
    width: 44px;
    height: 44px;
  }

  .video-play strong {
    font-size: 14px;
  }

  .video-play small {
    font-size: 9px;
  }

  .product-video-shell {
    border-radius: 5px;
  }
}

html,
body {
  max-width: 100%;
  overflow-x: clip;
}

.hero {
  overflow: clip;
}

.video-caption {
  z-index: 4;
  top: 12px;
  bottom: auto;
  pointer-events: none;
}

brand-logo {
  display: block;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
}

.brand-logo-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
}