:root {
  --navy-950: #031427;
  --navy-900: #04192e;
  --navy-800: #0a2b4c;
  --ink: #081f38;
  --white: #fff;
  --green: #087447;
  --green-dark: #05633c;
  --gold: #c79324;
  --gray-100: #f3f6f7;
  --gray-300: #d9dee2;
  --gray-600: #52606c;
  --shadow: 0 20px 46px rgba(5, 26, 48, .14);
  --serif: "Noto Serif SC", "Songti SC", SimSun, serif;
  --sans: "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shell: min(1400px, calc(100% - 7rem));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: var(--sans); font-size: 18px; line-height: 1.7; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.35; letter-spacing: .01em; }
h1 { font-size: clamp(3rem, 4vw, 4.5rem); }
h2 { font-size: clamp(2.35rem, 3.6vw, 4.25rem); }
h3 { font-size: clamp(1.45rem, 2vw, 2.15rem); }
.section-shell { width: var(--shell); margin-inline: auto; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .75rem 1rem; color: var(--navy-900); background: var(--white); }
.skip-link:focus { top: 1rem; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.gold-rule { display: block; width: 5.5rem; height: 2px; margin: 1.8rem 0; background: var(--gold); }

.site-header { position: sticky; top: 0; z-index: 40; color: var(--white); background: var(--navy-950); box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.header-inner { min-height: 106px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand-lockup { display: grid; gap: .1rem; }
.brand { width: max-content; border-bottom: 1px solid var(--gold); font-family: var(--serif); font-size: clamp(1.55rem, 2.2vw, 2.55rem); line-height: 1.25; text-decoration: none; }
.parent-brand { width: max-content; color: #d4dde6; font-size: .75rem; letter-spacing: .04em; text-decoration: none; }
.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2.8rem); }
.site-nav > a { font-size: .98rem; text-decoration: none; }
.site-nav > a:not(.button):hover, .site-nav > a:not(.button):focus-visible { color: #aee0c7; }
.menu-toggle { display: none; border: 0; padding: .5rem; background: transparent; }
.menu-toggle span:not(.sr-only) { display: block; width: 27px; height: 2px; margin: 6px 0; background: var(--white); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 56px; border: 1px solid transparent; border-radius: 7px; padding: .8rem 1.55rem; font-family: var(--sans); font-size: 1rem; font-weight: 600; text-align: center; text-decoration: none; transition: transform .2s ease, background .2s ease, color .2s ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-header, .button-primary { color: var(--white); background: var(--green); }
.button-header:hover, .button-primary:hover { background: var(--green-dark); }
.button-secondary { border-color: var(--green); color: var(--green-dark); background: var(--white); }

.hero { display: grid; grid-template-columns: minmax(0, .95fr) minmax(480px, 1.2fr); align-items: center; gap: clamp(3rem, 6vw, 7rem); padding-block: clamp(4rem, 7vw, 7rem); }
.hero-copy { max-width: 700px; }
.hero-lede { max-width: 650px; font-size: clamp(1.16rem, 1.5vw, 1.45rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.scope-note { max-width: 650px; margin: 1.1rem 0 0; color: var(--gray-600); font-size: .88rem; }
.trust-line { margin: 1.5rem 0 0; color: var(--gray-600); font-size: .95rem; }
.trust-line span { padding-inline: .4rem; color: var(--gold); }
.hero-media img { width: 100%; aspect-ratio: 1.18 / 1; object-fit: cover; object-position: 55% center; border-radius: 13px; box-shadow: var(--shadow); }
.trust-strip { padding-block: 1.35rem; color: var(--white); background: var(--navy-900); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.trust-grid span { position: relative; padding-left: 1.1rem; font-size: .86rem; font-weight: 700; }
.trust-grid span::before { content: ""; position: absolute; top: .72em; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }

.answer-section { padding-block: clamp(4rem, 7vw, 7rem); }
.two-column { display: grid; grid-template-columns: minmax(320px, .92fr) minmax(480px, 1.08fr); align-items: start; gap: clamp(3rem, 7vw, 8rem); }
.two-column h2 { margin-bottom: 0; font-size: clamp(2.35rem, 3.4vw, 4rem); }
.answer-copy p { font-size: 1.1rem; }
.answer-copy p:last-child { margin-bottom: 0; color: var(--gray-600); }
.parent-firm { padding-block: clamp(3.4rem, 5vw, 5.2rem); border-block: 1px solid rgba(199,147,36,.7); background: #fbfaf6; }
.parent-firm p { margin-bottom: 1.35rem; }
.text-links { display: flex; flex-wrap: wrap; gap: .7rem 1.5rem; }
.text-links a, .service-row a, .founder-block a { color: var(--green-dark); font-weight: 700; text-underline-offset: .2em; }

.services { padding-block: clamp(5rem, 8vw, 8rem); }
.decision-intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(450px, 1.05fr); align-items: center; gap: clamp(3rem, 7vw, 8rem); }
.decision-intro p { max-width: 650px; font-size: 1.16rem; }
.decision-intro img { width: 100%; aspect-ratio: 1.35 / 1; object-fit: cover; border-radius: 12px; box-shadow: var(--shadow); }
.service-list { margin-top: clamp(3.5rem, 6vw, 5.5rem); border-top: 1px solid rgba(199,147,36,.72); }
.service-row { display: grid; grid-template-columns: 55px minmax(220px, .9fr) minmax(360px, 1.35fr) auto; align-items: center; gap: 1.5rem; min-height: 126px; border-bottom: 1px solid rgba(199,147,36,.72); }
.service-number, .process-list > li > span { display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; color: var(--white); background: var(--green); font-weight: 700; }
.service-row h3, .service-row p { margin-bottom: 0; }
.service-row p { color: #283746; }
.service-row a { white-space: nowrap; }
.audience { padding-block: clamp(4rem, 7vw, 6rem); border-top: 1px solid var(--gray-300); background: #fbfaf6; text-align: center; }
.audience h2 { font-size: clamp(2.1rem, 3vw, 3.5rem); }
.audience-list { display: grid; grid-template-columns: repeat(4, 1fr); margin: 3rem 0 0; padding: 0; list-style: none; }
.audience-list li { position: relative; padding: 1.5rem 1rem; border-right: 1px solid rgba(199,147,36,.72); font-family: var(--serif); font-size: clamp(1.4rem, 2vw, 2rem); }
.audience-list li:last-child { border-right: 0; }

.approach { padding-block: clamp(5rem, 8vw, 8rem); color: var(--white); background: var(--navy-900); }
.approach h2 { max-width: 900px; }
.approach-lede { max-width: 800px; color: #dce6ef; font-size: 1.2rem; }
.process-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(2rem, 5vw, 5rem); margin: 4rem 0 0; padding: 0; list-style: none; }
.process-list li { display: grid; grid-template-columns: 52px 1fr; gap: 1.1rem; }
.process-list h3 { margin-bottom: .65rem; }
.process-list p { margin-bottom: 0; color: #dce6ef; }
.faq { padding-block: clamp(5rem, 8vw, 8rem); background: var(--gray-100); }
.faq-grid { display: grid; grid-template-columns: minmax(300px, .72fr) minmax(520px, 1.28fr); gap: clamp(3rem, 7vw, 8rem); align-items: start; }
.faq-grid > div:first-child p { color: var(--gray-600); }
.faq-list { border-top: 1px solid var(--gray-300); }
.faq-list details { border-bottom: 1px solid var(--gray-300); }
.faq-list summary { position: relative; min-height: 70px; padding: 1.35rem 3rem 1.35rem 0; font-weight: 700; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; top: 1.05rem; right: .25rem; font-size: 1.55rem; font-weight: 400; }
.faq-list details[open] summary::after { content: "–"; }
.faq-list details p { padding: 0 3rem 1.4rem 0; color: var(--gray-600); }
.faq-list summary:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }

.about { display: grid; grid-template-columns: 1fr 1.12fr; align-items: center; gap: clamp(3rem, 8vw, 9rem); padding-block: clamp(5rem, 8vw, 8rem); }
.credibility-list { display: grid; gap: 1.05rem; margin: 0; padding: 0; list-style: none; }
.credibility-list li { position: relative; padding-left: 2.55rem; }
.credibility-list li::before { content: "✓"; position: absolute; left: 0; top: .05rem; display: grid; place-items: center; width: 1.65rem; height: 1.65rem; border-radius: 50%; color: var(--white); background: var(--green); font-size: .9rem; font-weight: 700; }
.founder-block { display: grid; grid-template-columns: minmax(210px, .85fr) 1fr; align-items: center; gap: 2.4rem; }
.founder-block img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 38%; border-radius: 12px; box-shadow: var(--shadow); }
.founder-block p { color: var(--gray-600); }
.review-section { padding-block: clamp(4rem, 6vw, 6rem); border-top: 1px solid var(--gray-300); background: #fbfaf6; }
.review-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem, 7vw, 7rem); }
.review-grid p { color: var(--gray-600); }
.cta { border-top: 2px solid var(--gold); color: var(--white); background: var(--navy-900); }
.cta-inner { max-width: 1060px; padding-block: clamp(5rem, 8vw, 8rem); text-align: center; }
.cta h2 { font-size: clamp(2.6rem, 4vw, 4.75rem); }
.cta p { max-width: 760px; margin: 0 auto 2rem; color: #dce6ef; font-size: 1.15rem; }
.contact-row { display: flex; justify-content: center; align-items: center; gap: 1.4rem; margin-top: 2rem; }
.contact-row a { text-decoration: none; }
.contact-row span { width: 1px; height: 26px; background: var(--green); }
.site-footer { border-top: 1px solid rgba(199,147,36,.85); color: var(--white); background: var(--navy-950); }
.footer-main { display: grid; grid-template-columns: 1.1fr 1.6fr auto; align-items: center; gap: 3rem; padding-block: 3rem; border-bottom: 1px solid rgba(199,147,36,.65); }
.footer-brand { display: grid; }
.footer-brand strong { font-family: var(--serif); font-size: 2rem; font-weight: 500; }
.footer-brand span, .footer-main p, .footer-legal { color: #d4dde6; }
.footer-main nav { display: flex; flex-wrap: wrap; gap: 1.4rem; }
.footer-main nav a { text-decoration: none; }
.footer-main p { margin: 0; }
.footer-legal { display: flex; justify-content: space-between; gap: 3rem; padding-block: 1.5rem; font-size: .88rem; }
.footer-legal p { margin: 0; }

@media (max-width: 1080px) {
  :root { --shell: min(100% - 3rem, 960px); }
  .header-inner { min-height: 84px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 100%; left: 0; right: 0; display: none; align-items: stretch; padding: 1.25rem 1.5rem 1.5rem; background: var(--navy-950); box-shadow: 0 18px 28px rgba(0,0,0,.18); }
  .site-nav.is-open { display: grid; gap: .5rem; }
  .site-nav > a { padding: .7rem .2rem; }
  .site-nav .button { margin-top: .5rem; }
  .hero, .decision-intro, .two-column, .faq-grid, .about { grid-template-columns: 1fr; }
  .hero-media { order: -1; }
  .hero-media img { aspect-ratio: 16 / 10; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .service-row { grid-template-columns: 52px 1fr auto; }
  .service-row p { grid-column: 2 / -1; padding-bottom: 1.3rem; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-main p { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  :root { --shell: calc(100% - 2rem); }
  body { font-size: 16px; }
  h1 { font-size: clamp(2.55rem, 12vw, 4.2rem); }
  .hero h1 br { display: none; }
  h2 { font-size: clamp(2rem, 9vw, 3.25rem); }
  .brand { font-size: 1.45rem; }
  .parent-brand { font-size: .68rem; }
  .hero { gap: 2.2rem; padding-block: 2rem 4rem; }
  .hero-media img { aspect-ratio: 4 / 3; }
  .hero-actions { display: grid; }
  .trust-grid { grid-template-columns: 1fr; gap: .75rem; }
  .trust-grid span { font-size: .82rem; }
  .decision-intro { gap: 2.3rem; }
  .service-row { grid-template-columns: 46px 1fr; gap: 1rem; padding-block: 1.25rem; }
  .service-number { width: 42px; height: 42px; }
  .service-row p, .service-row a { grid-column: 2; padding-bottom: 0; }
  .audience-list { grid-template-columns: 1fr 1fr; }
  .audience-list li:nth-child(2) { border-right: 0; }
  .audience-list li:nth-child(-n+2) { border-bottom: 1px solid rgba(199,147,36,.72); }
  .process-list { grid-template-columns: 1fr; }
  .founder-block { grid-template-columns: 1fr; }
  .founder-block img { max-width: 330px; }
  .review-grid, .footer-main { grid-template-columns: 1fr; }
  .contact-row, .footer-legal { flex-direction: column; gap: .75rem; }
  .contact-row span { width: 42px; height: 1px; }
  .footer-main nav { display: grid; grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}