:root {
  --canvas: #f6f7f9;
  --surface: #fbfcfe;
  --surface-muted: #edf0f5;
  --ink: #101828;
  --ink-soft: #475467;
  --line: #d0d5dd;
  --accent: #185fa5;
  --accent-deep: #0f4c81;
  --focus: #185fa5;
  --radius: 14px;
  --page: min(1200px, calc(100vw - 64px));
  font-family:
    "Segoe UI Variable", "Aptos", "Helvetica Neue", Arial, "Microsoft YaHei",
    "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  overflow-x: clip;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  overflow-x: clip;
  background: var(--canvas);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
}
a {
  color: inherit;
}
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1,
h2,
h3 {
  font-weight: 600;
  letter-spacing: -0.06em;
  line-height: 0.98;
}

.skip-link {
  position: fixed;
  z-index: 4;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border: 1px solid var(--ink);
  background: var(--surface);
  transform: translateY(-160%);
}
.skip-link:focus {
  transform: translateY(0);
}
.shell {
  width: var(--page);
  margin: 0 auto;
}
.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}
.wordmark {
  color: var(--ink);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.055em;
  text-decoration: none;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}
.desktop-nav a,
.mobile-nav a {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}
.desktop-nav a:hover,
.mobile-nav a:hover,
.desktop-nav .current,
.language-switch a:hover {
  color: var(--accent-deep);
}
.language-switch {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--ink-soft);
  font-size: 13px;
}
.language-switch a {
  color: var(--ink-soft);
  text-decoration: none;
}
.language-switch .current {
  color: var(--accent-deep);
  font-weight: 600;
}
.menu-toggle,
.mobile-nav {
  display: none;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent-deep);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.96fr);
  gap: clamp(52px, 9vw, 132px);
  align-items: end;
  min-height: min(790px, calc(100dvh - 76px));
  padding: clamp(72px, 10vw, 142px) 0 86px;
}
.hero h1 {
  max-width: 720px;
  margin-bottom: 25px;
  font-size: clamp(52px, 6vw, 82px);
}
.hero-copy {
  max-width: 540px;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 20px;
  line-height: 1.45;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 19px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: #f8fafc;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition:
    transform 160ms ease,
    background 160ms ease;
}
.button:hover {
  background: var(--accent-deep);
}
.button:active {
  transform: translateY(1px);
}
.button-secondary {
  background: transparent;
  color: var(--accent-deep);
}
.button-secondary:hover {
  background: var(--surface-muted);
}

.workflow-stage {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.workflow-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 9px 18px;
}
.workflow-label {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
}
.animation-control {
  min-height: 36px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  color: var(--accent-deep);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.thread {
  overflow: hidden;
  border-radius: 10px;
  background: var(--surface-muted);
}
.thread-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 17px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.thread-header strong,
.thread-header span {
  display: block;
}
.thread-header strong {
  font-size: 15px;
}
.thread-header span {
  color: var(--ink-soft);
  font-size: 12px;
}
.thread-credit {
  color: var(--accent-deep) !important;
  font-weight: 600;
  white-space: nowrap;
}
.workflow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 13px 17px;
  border-bottom: 1px solid var(--line);
  list-style: none;
}
.workflow-steps li {
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.2;
}
.workflow-steps li.is-current,
.workflow-steps li.is-complete {
  color: var(--accent-deep);
  font-weight: 600;
}
.thread-body {
  min-height: 390px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 17px;
}
.message,
.workflow-event {
  max-width: 88%;
  margin: 0;
  padding: 13px 14px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.42;
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 360ms ease,
    transform 360ms ease;
}
.message.is-visible,
.workflow-event.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.message-client {
  align-self: flex-end;
  background: var(--accent);
  color: #f8fafc;
}
.message-studio {
  align-self: flex-start;
  background: var(--surface);
}
.message-meta {
  display: block;
  margin-top: 7px;
  font-size: 11px;
  opacity: 0.78;
}
.workflow-event {
  max-width: 100%;
  align-self: stretch;
  padding: 10px 12px;
  border: 1px solid var(--line);
  color: var(--accent-deep);
  font-size: 12px;
  text-align: center;
}
.workflow-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 16px 4px 3px;
}
.workflow-summary div {
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.workflow-summary strong,
.workflow-summary span {
  display: block;
}
.workflow-summary strong {
  font-size: 14px;
  font-weight: 600;
}
.workflow-summary span,
.workflow-disclaimer {
  color: var(--ink-soft);
  font-size: 12px;
}
.workflow-disclaimer {
  margin: 13px 4px 0;
}

section {
  padding: clamp(78px, 11vw, 142px) 0;
  border-top: 1px solid var(--line);
}
.section-intro {
  max-width: 680px;
  margin-bottom: 52px;
}
.section-intro h2,
.article-hero h1 {
  max-width: 720px;
  margin-bottom: 17px;
  font-size: clamp(40px, 4.7vw, 66px);
}
.section-intro p,
.article-intro {
  max-width: 58ch;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 18px;
}
.credit-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 20px;
}
.credit-small-stack {
  display: grid;
  gap: 20px;
}
.credit-block {
  min-height: 265px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px;
  border-radius: var(--radius);
  background: var(--surface);
}
.credit-block-large {
  min-height: 550px;
  background: var(--surface-muted);
}
.credit-number {
  color: var(--accent);
  font-size: clamp(64px, 9vw, 132px);
  font-weight: 600;
  letter-spacing: -0.09em;
  line-height: 0.8;
}
.credit-block h3 {
  margin: 0 0 9px;
  font-size: 28px;
}
.credit-block p {
  max-width: 34ch;
  margin-bottom: 0;
  color: var(--ink-soft);
}
.credit-examples {
  margin-top: 30px !important;
  font-size: 14px;
}
.plans-layout,
.split-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: clamp(40px, 8vw, 104px);
  align-items: start;
}
.statement {
  display: grid;
  grid-template-columns: 0.76fr 1.24fr;
  gap: clamp(42px, 9vw, 130px);
  align-items: start;
}
.statement-label {
  padding-top: 8px;
  color: var(--accent-deep);
  font-size: 14px;
  font-weight: 600;
}
.statement h2 {
  max-width: 760px;
  margin-bottom: 25px;
  font-size: clamp(43px, 5vw, 70px);
}
.statement p:last-child {
  max-width: 52ch;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 19px;
}
.work-layout {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: clamp(48px, 10vw, 140px);
  align-items: start;
}
.work-intro {
  position: sticky;
  top: 28px;
}
.work-intro h2 {
  margin-bottom: 20px;
  font-size: clamp(42px, 4.6vw, 64px);
}
.work-intro p:last-child {
  max-width: 31ch;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 18px;
}
.work-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}
.work-list li {
  padding: 27px 0;
  border-top: 1px solid var(--line);
}
.work-list li:last-child {
  border-bottom: 1px solid var(--line);
}
.work-list strong,
.work-list span {
  display: block;
}
.work-list strong {
  margin-bottom: 7px;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.05em;
}
.work-list span {
  max-width: 55ch;
  color: var(--ink-soft);
}
.proof {
  max-width: 760px;
}
.proof h2 {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: clamp(42px, 4.7vw, 66px);
}
.proof > p {
  max-width: 51ch;
  color: var(--ink-soft);
  font-size: 18px;
}
.plan-context,
.article-aside {
  position: sticky;
  top: 30px;
  padding: 27px;
  border-left: 4px solid var(--accent);
  background: var(--surface);
}
.plan-context h3,
.article-aside h2 {
  margin-bottom: 16px;
  font-size: 30px;
}
.plan-context p,
.article-aside p {
  margin-bottom: 14px;
  color: var(--ink-soft);
}
.plan-context p:last-child,
.article-aside p:last-child {
  margin-bottom: 0;
  font-size: 14px;
}
.plan-list,
.rule-list,
.proof-links {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}
.plan-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 18px;
  align-items: baseline;
  padding: 25px 0;
  border-top: 1px solid var(--line);
}
.plan-list li:last-child {
  border-bottom: 1px solid var(--line);
}
.plan-name {
  display: block;
  margin-bottom: 3px;
  font-size: 25px;
  font-weight: 600;
  letter-spacing: -0.045em;
}
.plan-description,
.plan-rollover {
  display: block;
  color: var(--ink-soft);
  font-size: 14px;
}
.plan-price,
.plan-credit {
  text-align: right;
  white-space: nowrap;
}
.plan-price {
  font-size: 18px;
  font-weight: 600;
}
.plan-credit {
  color: var(--accent-deep);
  font-size: 15px;
  font-weight: 600;
}
.rule-list li,
.proof-links a {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.rule-list li:last-child,
.proof-links a:last-child {
  border-bottom: 1px solid var(--line);
}
.rule-list strong,
.rule-list span {
  display: block;
}
.rule-list strong {
  margin-bottom: 6px;
  font-size: 22px;
}
.rule-list span {
  color: var(--ink-soft);
}
.proof-links a {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
}
.proof-links span {
  color: var(--accent-deep);
  white-space: nowrap;
}
.portrait {
  display: block;
  width: 100%;
  aspect-ratio: 0.79;
  object-fit: cover;
  border-radius: var(--radius);
}
.portrait-caption {
  max-width: 32ch;
  margin: 13px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
}
.accountability {
  display: grid;
  grid-template-columns: 1.16fr 0.84fr;
  gap: 20px;
}
.accountability-main {
  min-height: 430px;
  padding: clamp(30px, 5vw, 58px);
  border-radius: var(--radius);
  background: var(--surface-muted);
}
.accountability-main h2 {
  max-width: 620px;
  margin-bottom: 24px;
  font-size: clamp(42px, 4.7vw, 65px);
}
.accountability-main p,
.info-card p {
  max-width: 48ch;
  margin-bottom: 0;
  color: var(--ink-soft);
}
.accountability-side {
  display: grid;
  gap: 20px;
}
.info-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 205px;
  padding: 26px;
  border-radius: var(--radius);
  background: var(--surface);
}
.info-card h3 {
  margin-bottom: 9px;
  font-size: 27px;
}
.info-card p {
  max-width: 30ch;
  font-size: 14px;
}
.article-hero {
  max-width: 800px;
  padding: clamp(74px, 10vw, 142px) 0 78px;
}
.article-hero h1 {
  margin-bottom: 22px;
  font-size: clamp(52px, 6vw, 82px);
}
.faq details {
  padding: 21px 0;
  border-top: 1px solid var(--line);
}
.faq details:last-child {
  border-bottom: 1px solid var(--line);
}
.faq summary {
  cursor: pointer;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.035em;
}
.faq p {
  max-width: 65ch;
  margin: 16px 0 0;
  color: var(--ink-soft);
}
.closing {
  max-width: 900px;
  padding-bottom: clamp(92px, 13vw, 160px);
}
.closing h2 {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(42px, 4.7vw, 66px);
}
.closing > p {
  max-width: 51ch;
  color: var(--ink-soft);
  font-size: 18px;
}
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 25px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13px;
}
.site-footer a {
  color: var(--accent-deep);
}
.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;
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #101828;
    --surface: #182230;
    --surface-muted: #1d2939;
    --ink: #f2f4f7;
    --ink-soft: #cbd5e1;
    --line: #475467;
    --accent: #53a2e8;
    --accent-deep: #90cdfb;
    --focus: #90cdfb;
  }
  .button {
    color: #101828;
  }
  .button-secondary {
    color: var(--accent-deep);
  }
}

@media (max-width: 760px) {
  :root {
    --page: min(100% - 32px, 620px);
  }
  .site-header {
    min-height: 67px;
  }
  .desktop-nav {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    color: var(--ink);
    font: inherit;
    font-size: 14px;
  }
  .mobile-nav[data-open="true"] {
    display: grid;
    gap: 14px;
    padding: 16px 0 20px;
    border-bottom: 1px solid var(--line);
  }
  .hero,
  .credit-layout,
  .plans-layout,
  .split-layout,
  .statement,
  .work-layout,
  .accountability {
    grid-template-columns: 1fr;
  }
  .hero {
    min-height: 0;
    padding: 64px 0 72px;
  }
  .hero h1,
  .article-hero h1 {
    font-size: clamp(47px, 13vw, 64px);
    line-height: 0.96;
  }
  .hero-copy {
    font-size: 18px;
  }
  .thread-body {
    min-height: 408px;
    padding: 13px;
  }
  .workflow-steps {
    padding: 12px 13px;
  }
  .workflow-summary {
    grid-template-columns: 1fr 1fr;
  }
  .workflow-summary div:last-child {
    grid-column: 1 / -1;
  }
  section {
    padding: 76px 0;
  }
  .section-intro h2,
  .statement h2,
  .accountability-main h2,
  .work-intro h2,
  .proof h2,
  .closing h2,
  .article-hero h1 {
    font-size: 42px;
    line-height: 0.99;
  }
  .credit-block,
  .credit-block-large {
    min-height: 0;
  }
  .credit-block-large {
    min-height: 350px;
  }
  .plan-context,
  .article-aside,
  .work-intro {
    position: static;
  }
  .plan-list li {
    grid-template-columns: 1fr 1fr;
    gap: 6px 14px;
  }
  .plan-price,
  .plan-credit {
    text-align: left;
  }
  .plan-rollover {
    grid-column: 1 / -1;
    margin-top: 6px;
  }
  .portrait {
    aspect-ratio: 1.02;
  }
  .accountability-main {
    min-height: 0;
  }
  .info-card {
    min-height: 180px;
  }
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}