:root {
  --ink: #111315;
  --muted: #677078;
  --soft: #f4f4f1;
  --line: #dfe1dd;
  --orange: #ff6a00;
  --orange-dark: #d95200;
  --white: #fff;
  --heading: "Space Grotesk", sans-serif;
  --body: "DM Sans", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font: 400 16px/1.55 var(--body); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }
.site-header { position: fixed; z-index: 20; width: 100%; top: 0; background: rgba(255,255,255,.93); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(17,19,21,.08); }
.nav-wrap { min-height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; }
.brand-logo { display: block; width: 138px; height: auto; }
.brand-logo-light { width: 145px; }
.main-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; font-weight: 600; color: #4e575d; }
.main-nav a { transition: color .2s ease; }
.main-nav a:hover { color: var(--orange-dark); }
.nav-cta { color: var(--ink) !important; border: 1px solid var(--ink); padding: 10px 14px; border-radius: 999px; }
.nav-cta span { color: var(--orange); font-size: 18px; line-height: 0; margin-left: 5px; }
.menu-toggle { display: none; border: 0; background: transparent; padding: 8px; }
.menu-toggle span { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--ink); }
.hero { padding: 155px 0 34px; background: var(--soft); min-height: 760px; display: flex; flex-direction: column; }
.hero-grid { flex: 1; display: grid; grid-template-columns: .92fr 1.08fr; align-items: center; gap: 68px; }
.eyebrow, .section-kicker { margin: 0 0 22px; color: var(--orange-dark); font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow-line { width: 27px; height: 2px; background: var(--orange); }
h1, h2, h3 { font-family: var(--heading); letter-spacing: -.055em; margin: 0; }
h1 { max-width: 620px; font-size: clamp(3.5rem, 6.1vw, 5.7rem); line-height: .98; font-weight: 600; }
.hero-lead { max-width: 500px; margin: 28px 0 0; font-size: 19px; line-height: 1.5; color: #515b60; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 35px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 11px; min-height: 50px; border-radius: 999px; padding: 0 21px; font-weight: 700; font-size: 14px; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--orange); color: var(--ink); }
.button-primary:hover { background: #ff8129; }
.button span { font-size: 20px; line-height: 0; }
.text-link, .arrow-link { font-weight: 700; font-size: 14px; }
.text-link span, .arrow-link span { color: var(--orange-dark); font-size: 20px; margin-left: 5px; }
.hero-note { display: flex; gap: 10px; align-items: center; max-width: 380px; margin-top: 80px; color: #697277; font-size: 13px; }
.note-dot, .tag-dot { width: 8px; height: 8px; flex: 0 0 8px; border-radius: 50%; background: var(--orange); }
.hero-visual { position: relative; }
.image-frame { position: relative; overflow: hidden; border-radius: 14px; box-shadow: 22px 24px 0 #e4e4df; }
.image-frame img { width: 100%; aspect-ratio: 1.34; object-fit: cover; }
.image-tag { position: absolute; left: 18px; bottom: 18px; display: flex; gap: 9px; align-items: center; background: rgba(17,19,21,.88); color: white; padding: 10px 13px; border-radius: 5px; font-size: 12px; }
.hero-stamp { position: absolute; right: -25px; bottom: -40px; display: grid; place-items: center; width: 112px; height: 112px; padding: 16px; border-radius: 50%; background: var(--orange); color: var(--ink); transform: rotate(10deg); font: 700 10px/1 var(--heading); letter-spacing: .12em; text-align: center; }
.hero-stamp strong { font-size: 30px; line-height: .7; }
.hero-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 50px; color: #737b7f; font-size: 12px; letter-spacing: .04em; text-transform: uppercase; }
.hero-scroll { color: var(--ink); font-weight: 700; }
.hero-scroll span { color: var(--orange-dark); font-size: 19px; margin-left: 8px; }
.section { padding: 122px 0; }
.intro { background: var(--white); }
.intro-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 100px; }
.intro h2, .section-heading h2, .audience h2, .faq h2, .contact h2 { font-size: clamp(2.35rem, 4vw, 4.1rem); line-height: 1.04; font-weight: 600; }
.intro-copy { padding-top: 45px; color: var(--muted); font-size: 18px; }
.intro-copy p { margin: 0 0 21px; }
.arrow-link { display: inline-block; margin-top: 15px; color: var(--ink); }
.dark-section { background: var(--ink); color: white; }
.section-heading { max-width: 710px; }
.light-heading h2 { color: white; }
.orange { color: var(--orange) !important; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 64px; }
.step-card { min-height: 314px; padding: 25px; border: 1px solid rgba(255,255,255,.18); position: relative; display: flex; flex-direction: column; }
.step-card.step-featured { background: var(--orange); color: var(--ink); border-color: var(--orange); }
.step-number { font: 600 13px var(--heading); letter-spacing: .1em; opacity: .65; }
.step-icon { margin-top: auto; margin-bottom: 22px; width: 43px; height: 43px; display: grid; place-items: center; border: 1px solid currentColor; border-radius: 50%; font: 24px/1 var(--body); }
.step-card h3 { font-size: 23px; letter-spacing: -.04em; }
.step-card p { margin: 10px 0 0; color: #b8bec0; font-size: 14px; line-height: 1.55; }
.step-featured p { color: #42220f; }
.operation-strip { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 53px; padding-top: 25px; border-top: 1px solid rgba(255,255,255,.18); color: #c1c5c6; font-size: 13px; }
.strip-label { color: var(--orange); font-weight: 700; margin-right: 16px; }
.operation-strip i { width: 4px; height: 4px; background: var(--orange); border-radius: 50%; }
.responsibilities { background: var(--soft); }
.responsibility-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 57px; }
.responsibility-card { padding: 32px; border-top: 5px solid var(--ink); background: white; }
.pertto-card { border-color: var(--orange); }
.company-card { background: var(--ink); color: white; border-color: white; }
.responsibility-label { color: var(--orange-dark); font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.company-card .responsibility-label { color: var(--orange); }
.responsibility-card h3 { max-width: 400px; margin-top: 18px; font-size: 28px; line-height: 1.05; }
.responsibility-card ul { display: grid; gap: 11px; margin: 32px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 14px; }
.company-card ul { color: #bec4c5; }
.responsibility-card li { display: flex; gap: 10px; align-items: flex-start; }
.responsibility-card li::before { content: "＋"; color: var(--orange-dark); font-weight: 700; }
.company-card li::before { color: var(--orange); }
.model-footnote { margin: 24px 0 0; color: var(--muted); font-size: 14px; }
.model-footnote strong { color: var(--ink); }
.benefits { background: #f9f9f7; }
.benefit-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; margin-top: 64px; }
.benefit-intro > p { max-width: 330px; color: var(--muted); font-size: 18px; }
.benefit-quote { max-width: 290px; margin-top: 60px; padding-top: 18px; border-top: 2px solid var(--orange); font: 600 21px/1.2 var(--heading); }
.benefit-list { border-top: 1px solid var(--line); }
.benefit-item { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.benefit-icon { width: 35px; height: 35px; display: grid; place-items: center; border: 1px solid var(--orange); border-radius: 50%; color: var(--orange-dark); font-size: 19px; }
.benefit-item h3 { font-size: 20px; letter-spacing: -.035em; }
.benefit-item p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.audience { background: var(--ink); color: white; }
.audience-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 84px; }
.audience-image { overflow: hidden; border-radius: 14px; }
.audience-image img { height: 510px; width: 100%; object-fit: cover; object-position: 75% center; filter: saturate(.86); }
.audience-copy h2 { margin-bottom: 25px; }
.audience-copy > p:not(.section-kicker) { color: #b8bec0; font-size: 17px; max-width: 480px; }
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 29px 0 34px; }
.pill-row span { border: 1px solid rgba(255,255,255,.28); border-radius: 999px; padding: 8px 12px; color: #e4e6e6; font-size: 12px; }
.button-light { border: 1px solid rgba(255,255,255,.7); color: white; }
.button-light:hover { background: white; color: var(--ink); }
.faq { background: white; }
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; }
.faq-heading > p:last-child { margin-top: 27px; color: var(--muted); max-width: 290px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); padding: 20px 0; }
summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 20px; font: 600 18px var(--heading); letter-spacing: -.03em; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--orange-dark); font: 24px/1 var(--body); transition: transform .2s ease; }
details[open] summary::after { transform: rotate(45deg); }
details p { max-width: 620px; margin: 13px 40px 0 0; color: var(--muted); font-size: 15px; }
.contact { padding-top: 20px; padding-bottom: 122px; background: white; }
.contact-card { display: flex; align-items: end; justify-content: space-between; gap: 40px; padding: 60px; background: var(--soft); border-top: 6px solid var(--orange); }
.contact-card h2 { max-width: 680px; }
.contact-card p:not(.section-kicker) { max-width: 510px; margin: 21px 0 0; color: var(--muted); font-size: 17px; }
.button-large { min-height: 58px; white-space: nowrap; }
.site-footer { padding: 38px 0 25px; background: var(--ink); color: white; }
.footer-top, .footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.brand-footer { color: white; }
.footer-top p { margin: 0; color: #adb3b5; font-size: 14px; }
.back-top { font-size: 13px; color: var(--orange); font-weight: 700; }
.footer-bottom { margin-top: 54px; padding-top: 19px; border-top: 1px solid rgba(255,255,255,.15); color: #858d90; font-size: 12px; }
@media (max-width: 900px) {
  .hero-grid, .intro-grid, .benefit-layout, .audience-grid, .faq-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding-top: 130px; }
  .hero-visual { max-width: 690px; }
  .intro-copy { padding-top: 0; }
  .benefit-layout { margin-top: 45px; }
  .benefit-quote { margin-top: 30px; }
  .audience-image { order: 2; }
  .audience-image img { height: 390px; }
  .contact-card { flex-direction: column; align-items: flex-start; }
  .responsibility-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .container { width: min(100% - 32px, 1160px); }
  .nav-wrap { min-height: 70px; }
  .menu-toggle { display: block; }
  .main-nav { display: none; position: absolute; left: 16px; right: 16px; top: 66px; padding: 15px; flex-direction: column; align-items: stretch; gap: 7px; background: white; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 15px 35px rgba(0,0,0,.1); }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 10px; }
  .nav-cta { text-align: center; margin-top: 6px; }
  .hero { padding-top: 110px; min-height: auto; }
  h1 { font-size: clamp(3rem, 14vw, 4.3rem); }
  .hero-lead { font-size: 17px; }
  .hero-note { margin-top: 50px; }
  .hero-visual { margin-top: 7px; }
  .image-frame { box-shadow: 12px 13px 0 #e4e4df; }
  .hero-stamp { right: -6px; bottom: -28px; width: 85px; height: 85px; font-size: 8px; }
  .hero-stamp strong { font-size: 23px; }
  .hero-bottom { padding-top: 56px; align-items: flex-start; gap: 15px; flex-direction: column; }
  .hero-scroll { display: none; }
  .section { padding: 80px 0; }
  .intro h2, .section-heading h2, .audience h2, .faq h2, .contact h2 { font-size: 2.5rem; }
  .steps-grid { grid-template-columns: 1fr; margin-top: 40px; }
  .step-card { min-height: 260px; }
  .operation-strip { gap: 12px; }
  .strip-label { width: 100%; margin-right: 0; }
  .audience-image img { height: 300px; }
  .contact { padding-top: 0; padding-bottom: 80px; }
  .contact-card { padding: 34px 25px; }
  .button-large { white-space: normal; text-align: center; width: 100%; }
  .footer-top, .footer-bottom { align-items: flex-start; flex-direction: column; }
  .footer-bottom { margin-top: 35px; }
  .brand-logo { width: 132px; }
}