:root {
  --green: #5bad32;
  --green-dark: #438b23;
  --green-soft: #edf7e8;
  --ink: #232624;
  --ink-soft: #555c57;
  --paper: #ffffff;
  --mist: #f5f7f4;
  --line: #dfe5de;
  --max: 1180px;
  --shadow: 0 24px 60px rgba(27, 45, 31, .12);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Manrope", "Noto Sans JP", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.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: 8px; left: 8px; z-index: 200; padding: 10px 14px; background: white; transform: translateY(-160%); }
.skip-link:focus { transform: none; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(35,38,36,.08);
  backdrop-filter: blur(14px);
}
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { flex: 0 1 300px; }
.brand img { width: min(300px, 44vw); height: auto; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { position: relative; text-decoration: none; font-size: .875rem; font-weight: 700; letter-spacing: .02em; }
.main-nav a:not(.language-link)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 2px; background: var(--green); transition: right .2s ease; }
.main-nav a:hover::after, .main-nav a:focus-visible::after { right: 0; }
.language-link { border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; transition: .2s ease; }
.language-link:hover { border-color: var(--green); color: var(--green-dark); }
.menu-button { display: none; background: transparent; border: 0; padding: 10px; }

.hero { min-height: 790px; display: grid; align-items: center; position: relative; overflow: hidden; background: #18211b; color: white; padding-top: 82px; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(18,29,21,.98) 0%, rgba(18,29,21,.88) 38%, rgba(18,29,21,.35) 72%, rgba(18,29,21,.22) 100%); z-index: 1; }
.hero::after { content: ""; position: absolute; width: 430px; height: 430px; border: 1px solid rgba(105,190,58,.32); border-radius: 50%; left: -210px; bottom: -220px; z-index: 1; box-shadow: 0 0 0 80px rgba(105,190,58,.035), 0 0 0 160px rgba(105,190,58,.025); }
.hero-media { position: absolute; inset: 0; background: radial-gradient(circle at 80% 35%, rgba(91,173,50,.28), transparent 35%), linear-gradient(135deg, #2c3c31, #101511); background-image: linear-gradient(90deg, rgba(15,25,18,.15), rgba(15,25,18,.15)), url('/assets/tunibra-hero.png'); background-size: cover; background-position: center; }
.hero-content { position: relative; z-index: 2; padding-block: 110px 70px; }
.eyebrow, .section-kicker { margin: 0 0 20px; color: var(--green); font-size: .78rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.hero h1 { max-width: 820px; margin: 0; font-size: clamp(2.6rem, 5.5vw, 5rem); line-height: 1.08; letter-spacing: -.045em; font-weight: 600; }
.hero h1 span { color: #b8e3a0; }
.hero-copy { max-width: 650px; margin: 28px 0 0; color: rgba(255,255,255,.84); font-size: clamp(1.05rem, 1.6vw, 1.25rem); line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; border-radius: 4px; padding: 12px 22px; text-decoration: none; font-size: .92rem; font-weight: 700; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--green); border: 1px solid var(--green); color: white; }
.button-primary:hover { background: #69bb40; border-color: #69bb40; }
.button-ghost { border: 1px solid rgba(255,255,255,.5); color: white; }
.button-ghost:hover { border-color: white; background: rgba(255,255,255,.08); }
.hero-notes { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 76px; color: rgba(255,255,255,.7); font-size: .82rem; font-weight: 600; }
.hero-notes span { display: flex; align-items: center; gap: 9px; }
.hero-notes span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--green); }

.section { padding-block: 110px; }
.split-layout { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, .85fr); gap: 10vw; align-items: start; }
.section h2, .contact-section h2 { margin: 0; max-width: 760px; font-size: clamp(2rem, 3.8vw, 3.35rem); line-height: 1.2; letter-spacing: -.035em; font-weight: 600; }
.about-copy { padding-top: 42px; }
.about-copy p { margin: 0 0 22px; color: var(--ink-soft); font-size: 1.04rem; }
.text-link { display: inline-flex; gap: 12px; align-items: center; margin-top: 8px; color: var(--green-dark); font-weight: 700; text-decoration: none; border-bottom: 1px solid #aad497; }
.text-link span { transition: transform .2s ease; }
.text-link:hover span { transform: translateX(4px); }

.section-values { background: var(--mist); }
.section-heading { margin-bottom: 54px; }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.value-card { min-height: 295px; padding: 28px; background: var(--paper); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: transform .25s ease, box-shadow .25s ease; }
.value-card:hover { position: relative; z-index: 1; transform: translateY(-6px); box-shadow: var(--shadow); }
.value-number { display: block; margin-bottom: 64px; color: var(--green); font-size: .78rem; font-weight: 700; }
.value-card h3, .service-card h3 { margin: 0 0 14px; font-size: 1.12rem; line-height: 1.4; }
.value-card p { margin: 0; color: var(--ink-soft); font-size: .92rem; line-height: 1.7; }

.section-heading-row { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(250px, .55fr); gap: 8vw; align-items: end; }
.section-heading-row > p { margin: 0 0 8px; color: var(--ink-soft); }
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.service-card { position: relative; min-height: 400px; padding: 38px; border: 1px solid var(--line); overflow: hidden; }
.service-card::after { content: ""; position: absolute; width: 130px; height: 130px; border-radius: 50%; right: -70px; bottom: -70px; background: var(--green-soft); transition: transform .3s ease; }
.service-card:hover::after { transform: scale(1.2); }
.service-icon { width: 50px; height: 50px; display: grid; place-items: center; margin-bottom: 34px; color: var(--green-dark); background: var(--green-soft); border-radius: 50%; }
.service-icon svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { max-width: 360px; font-size: 1.35rem; }
.service-card ul { margin: 20px 0 0; padding: 0; list-style: none; columns: 2; column-gap: 24px; color: var(--ink-soft); font-size: .9rem; }
.service-card li { position: relative; break-inside: avoid; padding: 5px 0 5px 16px; }
.service-card li::before { content: ""; position: absolute; left: 0; top: 15px; width: 5px; height: 5px; border-radius: 50%; background: var(--green); }

.contact-section { padding-block: 100px; background: #202b23; color: white; }
.contact-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, .8fr); gap: 11vw; }
.section-kicker-light { color: #a9dd8f; }
.contact-section h2 { max-width: 570px; }
.contact-section p:not(.section-kicker) { max-width: 560px; color: rgba(255,255,255,.68); }
.contact-details { display: grid; gap: 0; }
.contact-details > * { display: grid; grid-template-columns: 110px 1fr; gap: 20px; padding: 21px 0; border-bottom: 1px solid rgba(255,255,255,.13); text-decoration: none; }
.contact-details span { color: #9fc68d; font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.contact-details strong { font-size: .95rem; line-height: 1.7; font-weight: 500; overflow-wrap: anywhere; }
.contact-details a:hover strong { color: #b8e3a0; }
.site-footer { padding-block: 34px; background: #151b17; color: rgba(255,255,255,.62); }
.footer-inner { display: flex; justify-content: space-between; gap: 28px; align-items: center; }
.footer-inner > div:first-child { display: flex; flex-direction: column; }
.footer-inner strong { color: rgba(255,255,255,.86); font-size: .82rem; }
.footer-inner span { font-size: .74rem; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: .78rem; text-decoration: none; }
.footer-links a:hover { color: white; }

@media (max-width: 900px) {
  .header-inner { min-height: 72px; }
  .menu-button { width: 44px; height: 44px; display: grid; align-content: center; gap: 5px; cursor: pointer; }
  .menu-button span:not(.sr-only) { display: block; height: 2px; width: 24px; background: var(--ink); transition: .2s ease; }
  .menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .main-nav { position: absolute; inset: 72px 0 auto; display: none; padding: 18px 20px 24px; background: white; border-bottom: 1px solid var(--line); box-shadow: 0 18px 30px rgba(0,0,0,.08); }
  .main-nav.is-open { display: grid; gap: 0; }
  .main-nav a { padding: 13px 0; }
  .language-link { margin-top: 10px; text-align: center; }
  .hero { min-height: 720px; padding-top: 72px; }
  .hero::before { background: linear-gradient(90deg, rgba(18,29,21,.96), rgba(18,29,21,.67)); }
  .split-layout, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-copy { padding-top: 0; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .section-heading-row { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 620px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .brand img { width: 225px; max-width: 66vw; }
  .hero { min-height: 740px; }
  .hero::before { background: linear-gradient(90deg, rgba(18,29,21,.93), rgba(18,29,21,.74)); }
  .hero-media { background-position: 62% center; }
  .hero-content { padding-block: 92px 46px; }
  .hero h1 { font-size: clamp(2.35rem, 12vw, 3.4rem); }
  .hero h1 br { display: none; }
  .hero-copy { font-size: 1rem; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .hero-notes { margin-top: 48px; gap: 10px 18px; }
  .section { padding-block: 78px; }
  .section-heading { margin-bottom: 36px; }
  .values-grid, .services-grid { grid-template-columns: 1fr; }
  .value-card { min-height: 0; padding: 25px; }
  .value-number { margin-bottom: 32px; }
  .service-card { min-height: 0; padding: 28px 24px; }
  .service-card ul { columns: 1; }
  .contact-section { padding-block: 78px; }
  .contact-details > * { grid-template-columns: 1fr; gap: 4px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}