:root {
  --blue: #203ee8;
  --blue-dark: #172eb5;
  --ink: #17213a;
  --muted: #606b80;
  --line: #dfe4ed;
  --pale: #f3f6fb;
  --lime: #dfff8e;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 120px; }
body { margin: 0; font-family: Inter, "Segoe UI", Arial, sans-serif; color: var(--ink); font-size: 16px; line-height: 1.65; background: #fff; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button, a, input, select, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
button { cursor: pointer; }
p, h1, h2, h3 { margin-top: 0; }
p { margin-bottom: 1.15em; }
h1, h2, h3, p, li, label, legend { overflow-wrap: anywhere; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.045em; text-wrap: balance; }
h1 { font-size: clamp(2.7rem, 5.5vw, 5rem); line-height: 1.1; font-weight: 650; margin-bottom: 28px; letter-spacing: -.05em; }
h1 > span { color: var(--blue); }
h2 { font-size: clamp(2rem, 3.45vw, 3.25rem); font-weight: 650; margin-bottom: 24px; }
h3 { font-size: 1.35rem; font-weight: 650; letter-spacing: -.025em; }
strong { font-weight: 650; }
.container { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.section { padding-block: 64px; }
.eyebrow { font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 700; margin-bottom: 25px; color: var(--blue); }
.skip-link { position: fixed; top: -100px; left: 16px; padding: 12px 20px; background: var(--ink); color: #fff; z-index: 10; }
.skip-link:focus { top: 10px; }
.site-header { border-bottom: 1px solid var(--line); background: #ffffffed; position: sticky; top: 0; z-index: 5; backdrop-filter: blur(12px); }
.header-inner { min-height: 88px; padding-block: 16px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; }
.brand { display: inline-flex; align-items: center; font-size: 1.4rem; font-weight: 600; letter-spacing: -.035em; white-space: nowrap; }
.header-inner nav { display: flex; flex-wrap: wrap; gap: 8px 28px; font-size: .875rem; font-weight: 550; }
.header-inner nav a { display: inline-flex; align-items: center; }
.header-inner nav a:hover, .text-link:hover { color: var(--blue); }
.header-inner .brand, .header-inner nav a, .button, .text-link { min-height: 44px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; border: 1px solid transparent; border-radius: 6px; background: var(--blue); color: #fff; font-weight: 600; font-size: .94rem; padding: 15px 22px; line-height: 1.5; transition: background .18s, transform .18s; }
.button:hover { background: var(--blue-dark); transform: translateY(-1px); }
.button-small { font-size: .875rem; padding: 11px 16px; gap: 16px; }
.text-link { display: inline-flex; align-items: center; gap: 14px; font-size: .9rem; font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.hero { padding-block: 72px 64px; }
.hero h1 { max-width: 1050px; }
.hero-description { max-width: 730px; color: var(--muted); font-size: 1.25rem; line-height: 1.7; margin-bottom: 28px; }
.problem-section { display: grid; grid-template-columns: .85fr 1.4fr; gap: 90px; border-top: 1px solid var(--line); }
.problem-copy { padding-top: 7px; color: var(--muted); }
.problem-copy p:last-child { margin-bottom: 0; }
.problem-list { list-style: none; margin: 0; padding: 0; }
.problem-list li { margin-bottom: 19px; }
.problem-list strong { color: var(--ink); }
.source-note { font-size: .875rem; color: var(--muted); }
.source-note a, .project-copy a { text-decoration: underline; text-underline-offset: 3px; color: var(--blue); }
.emphasis { color: var(--ink); font-weight: 550; border-left: 3px solid var(--blue); padding-left: 20px; margin-top: 26px; }
.solution-section { background: var(--pale); border-block: 1px solid var(--line); }
.solution-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 36px; }
.solution-grid article { border-top: 1px solid #bac5db; padding-top: 22px; }
.proposal-number { color: var(--blue); font-size: .875rem; display: block; margin-bottom: 15px; }
.solution-grid h3 { font-size: 1.5rem; margin-bottom: 16px; }
.solution-grid p { color: var(--muted); margin-bottom: 0; }
.credit-logic { border-left: 3px solid var(--blue); padding-left: 22px; margin-top: 35px; max-width: 950px; }
.credit-logic p { font-size: .875rem; color: var(--muted); margin-bottom: 0; }
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.benefit-card { padding: 25px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.benefit-card h3 { font-size: 1.4rem; line-height: 1.2; margin-bottom: 22px; }
.benefit-card ul { list-style: none; margin: 0; padding: 0; }
.benefit-card li { position: relative; padding: 13px 0 13px 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: .94rem; line-height: 1.6; }
.benefit-card li::before { content: '+'; position: absolute; left: 0; color: var(--blue); font-weight: 650; }
.principles-section { background: #131f3b; color: #fff; }
.principles-section .eyebrow { color: var(--lime); }
.conditions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.conditions-grid h3 { font-size: 1.25rem; }
.conditions-grid p { font-size: .94rem; color: #c4cee0; margin-bottom: 0; }
.faq-section { display: grid; grid-template-columns: 1fr 1.2fr; gap: 80px; }
.faq-section > div > p:not(.eyebrow) { color: var(--muted); }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { font-size: 1rem; font-weight: 550; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 22px; line-height: 1.5; }
summary::-webkit-details-marker { display: none; }
summary span { color: var(--blue); font-size: 1.25rem; flex-shrink: 0; }
details[open] summary span { transform: rotate(45deg); }
details p { color: var(--muted); padding-right: 28px; margin-bottom: 24px; }
.project-section { background: var(--pale); border-top: 1px solid var(--line); }
.project-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 80px; }
.project-copy { color: var(--muted); }
.project-copy strong { color: var(--ink); }
.project-copy p:last-child { margin-bottom: 0; }
.interest-section { background: #eef1ff; border-top: 1px solid #dce2ff; }
.interest-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 70px; align-items: start; }
.interest-copy h2 { font-size: clamp(2rem, 3.5vw, 3.15rem); line-height: 1.08; }
.interest-copy > p:not(.eyebrow) { color: var(--muted); max-width: 390px; }
.interest-detail { font-size: .875rem; }
.interest-form { background: #fff; border: 1px solid var(--line); padding: 28px; border-radius: var(--radius); box-shadow: 0 8px 25px #132f9b05; }
.interest-form h3 { font-size: 1.4rem; margin-bottom: 9px; }
.form-intro { font-size: .875rem; color: var(--muted); margin-bottom: 20px; }
.field { margin-bottom: 15px; min-width: 0; }
.field label, legend { font-size: .875rem; font-weight: 550; display: block; margin-bottom: 7px; }
.field label span, legend span { font-weight: 400; color: var(--muted); }
.field label span[aria-hidden] { color: var(--blue); }
input, select { max-width: 100%; }
input[type=text], input[type=email], select { border: 1px solid #c7cfdf; background: #fff; border-radius: 5px; min-height: 47px; padding: 10px 12px; width: 100%; color: var(--ink); font-size: max(16px, 1rem); }
input::placeholder { color: #788195; opacity: 1; }
input:focus, select:focus { outline: 2px solid var(--blue); outline-offset: 2px; }
input[aria-invalid=true] { border-color: #b42336; }
fieldset { padding: 0; margin: 18px 0; border: 0; min-width: 0; }
legend { padding: 0; margin-bottom: 12px; }
.checkbox-label { display: flex; gap: 10px; align-items: center; font-size: .875rem; margin-top: 4px; padding-block: 8px; min-height: 44px; cursor: pointer; }
.checkbox-label input { accent-color: var(--blue); width: 20px; height: 20px; flex-shrink: 0; margin: 0; }
.field-error { font-size: .875rem; color: #b42336; display: block; }
.field-error:not(:empty) { margin-top: 7px; }
.form-note { font-size: .875rem; color: #515d73; line-height: 1.65; margin-bottom: 19px; }
.form-submit { width: 100%; gap: 12px; }
.form-submit > span:last-child { margin-left: auto; }
.demo-badge { background: #ffffff20; border: 1px solid #ffffff60; border-radius: 3px; font-size: .75rem; padding: 0 6px; font-weight: 400; }
.form-status { font-size: .875rem; line-height: 1.6; margin-top: 20px; padding: 15px; background: #eef1ff; border: 1px solid #cbd4ff; border-radius: 5px; }
.form-status:focus { outline: 2px solid var(--blue); outline-offset: 3px; }
footer { border-top: 1px solid var(--line); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; padding-block: 38px; }
.footer-inner p { font-size: .875rem; color: var(--muted); margin: 0; }
.problem-section > *, .solution-grid > *, .benefit-grid > *, .conditions-grid > *, .interest-grid > *, .faq-section > *, .project-grid > * { min-width: 0; }

@media (max-width: 1100px) {
  .container { width: calc(100% - 64px); }
  .header-inner nav { gap: 8px 18px; }
  .faq-section, .project-grid { gap: 45px; }
}

@media (max-width: 850px) {
  /* Let navigation scroll with the page instead of covering mobile content. */
  .site-header { position: static; }
  html { scroll-padding-top: 24px; }
  .header-inner { min-height: 76px; padding-block: 12px; }
  .header-inner nav { order: 3; width: 100%; gap: 4px 20px; }
  .hero h1 { font-size: clamp(2.7rem, 6.5vw, 4.4rem); }
  .hero .eyebrow { font-size: .72rem; }
  .problem-section { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .problem-section h2 { margin-bottom: 0; }
  .solution-grid { gap: 30px; }
  .benefit-grid { grid-template-columns: 1fr; gap: 16px; }
  .conditions-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .faq-section, .project-grid, .interest-grid { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .interest-copy > p:not(.eyebrow) { max-width: 620px; }
}

@media (max-width: 620px) {
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 72px; gap: 12px; padding-block: 14px; }
  .brand { font-size: 1.17rem; }
  .button-small { padding: 10px 11px; gap: 5px; }
  .header-inner nav { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; padding: 4px; background: var(--pale); border-radius: 8px; }
  .header-inner nav a { justify-content: center; padding: 6px 4px; text-align: center; line-height: 1.35; border-radius: 5px; }
  .header-inner nav a:hover { background: #fff; }
  .hero { padding-block: 40px 48px; }
  h1, .hero h1 { font-size: clamp(2rem, 1rem + 5.5vw, 3.1rem); line-height: 1.12; letter-spacing: -.04em; margin-bottom: 22px; }
  h2, .interest-copy h2 { font-size: clamp(1.75rem, 1.1rem + 3.2vw, 2.35rem); line-height: 1.18; letter-spacing: -.035em; margin-bottom: 20px; }
  /* Desktop editorial breaks create isolated words on narrow screens. */
  h2 br { display: none; }
  .hero-description { font-size: 1rem; line-height: 1.7; margin-bottom: 24px; }
  .hero > .button { width: 100%; }
  .section { padding-block: 40px; }
  .eyebrow { margin-bottom: 16px; font-size: .75rem; letter-spacing: .09em; }
  .hero .eyebrow { max-width: 32ch; line-height: 1.65; }
  .problem-section, .solution-grid, .conditions-grid { grid-template-columns: 1fr; gap: 26px; }
  .problem-section h2 { margin-bottom: 0; }
  .problem-list li { margin-bottom: 17px; }
  .solution-grid { margin-top: 25px; }
  .solution-grid h3 { font-size: 1.3rem; }
  .benefit-grid { margin-top: 24px; }
  .benefit-card { padding: 20px; }
  .benefit-card h3 { margin-bottom: 16px; }
  .conditions-grid article + article { border-top: 1px solid #ffffff26; padding-top: 24px; }
  .credit-logic { padding-left: 17px; }
  .conditions-grid { gap: 30px; }
  .interest-form { padding: 20px 16px; }
  .interest-form h3 { font-size: 1.25rem; }
  .checkbox-label { align-items: flex-start; }
  .checkbox-label input { margin-top: 2px; }
  summary { gap: 12px; padding-block: 18px; }
  details p { padding-right: 0; }
  .interest-copy > p:not(.eyebrow) { max-width: none; }
  .footer-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; padding-block: 28px; }
  .footer-inner > .brand, .footer-inner p { grid-column: 1 / -1; }
  .footer-inner p { order: 0; }
  .footer-inner > .text-link:last-child { justify-self: end; }
}

@media (max-width: 420px) {
  .header-inner nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .header-inner > .button { font-size: .8125rem; }
  .benefit-card { padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}