@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;450;500;550;600;650;700&display=swap');

:root {
  color-scheme: light;
  --primary: #137333;
  --primary-hover: #0d5c28;
  --ink: #202124;
  --muted: #5f6368;
  --outline: #dadce0;
  --surface: #f8fafd;
  --green-surface: #eef7f0;
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height, 88px) + 48px); }
body { margin: 0; color: var(--ink); background: #fff; font-family: Roboto, Arial, sans-serif; -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; color: inherit; }
a, button { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
button:disabled { opacity: .6; cursor: not-allowed; }
button[aria-busy=true]:disabled { cursor: wait; }
.button:disabled:hover { background: var(--primary); box-shadow: none; }
button:focus-visible, a:focus-visible { outline: 3px solid #34a853; outline-offset: 4px; }
input:focus-visible, textarea:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
.container { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 10; background: #fffffffa; border-bottom: 1px solid #edf0ec; }
.header-inner { max-width: 1440px; min-height: 88px; padding: 16px 40px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 36px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; padding: 10px 14px; border: 1px solid #b8d5c0; border-radius: 12px; background: #fff; }
.brand-name { font-size: 20px; line-height: 1.35; font-weight: 650; letter-spacing: .25px; color: var(--primary); }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a { color: var(--muted); padding: 12px 16px; font-size: 14px; border-radius: 24px; }
.nav a:hover { color: var(--primary); background: var(--green-surface); }
.header-actions { display: flex; gap: 12px; align-items: center; }
.services { position: relative; }
.services-button { border: 1px solid var(--outline); background: #fff; padding: 10px 16px; min-height: 42px; border-radius: 24px; font-size: 13px; font-weight: 500; display: flex; align-items: center; gap: 14px; }
.services-button:hover, .services-button[aria-expanded=true] { background: #f1f5f1; border-color: #b8c8bb; }
.services-menu { position: absolute; top: calc(100% + 10px); right: 0; width: 300px; padding: 8px; border: 1px solid #e5e9e4; border-radius: 16px; background: #fff; box-shadow: 0 6px 24px #20212424; }
.menu-caption { margin: 10px 12px 8px; color: var(--muted); font-size: 12px; }
.services-menu button { display: flex; align-items: center; justify-content: space-between; width: 100%; background: transparent; border: 0; padding: 15px 12px; text-align: left; border-radius: 10px; font-size: 15px; color: var(--primary); }
.services-menu button:hover, .services-menu button:focus-visible { background: var(--green-surface); }
.services-menu small { display: block; font-size: 12px; margin-top: 6px; color: var(--muted); }
.menu-button { display: none; border: 0; background: transparent; border-radius: 50%; width: 44px; height: 44px; font-size: 23px; }
.hero { padding: 88px 0 64px; text-align: center; }
.eyebrow { color: var(--primary); font-size: 13px; font-weight: 500; line-height: 1.6; margin: 0 0 18px; }
.hero-eyebrow { display: inline-block; background: var(--green-surface); border-radius: 30px; padding: 8px 18px; font-size: 11px; letter-spacing: 1.5px; margin-bottom: 24px; }
h1 { margin: 0; font-size: clamp(38px, 4.6vw, 64px); line-height: 1.16; letter-spacing: -2.4px; font-weight: 450; }
h1 span { color: var(--primary); }
.hero-description { color: var(--muted); font-size: 18px; line-height: 1.75; margin: 28px auto 32px; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; padding: 14px 24px; min-height: 48px; border: 1px solid transparent; border-radius: 28px; font-size: 14px; font-weight: 500; color: #fff; background: var(--primary); transition: background .15s, box-shadow .15s; }
.button:hover { background: var(--primary-hover); box-shadow: 0 2px 5px #13733325; }
.button > span { font-size: 19px; line-height: 1; }
.button-outlined { background: #fff; border-color: var(--outline); color: var(--primary); }
.button-outlined:hover { background: var(--green-surface); }
.hero-details { display: flex; justify-content: center; gap: 28px; color: var(--muted); font-size: 12px; margin-top: 40px; }
.hero-details span + span { position: relative; }
.hero-details span + span::before { content: '·'; position: absolute; left: -16px; }
h2 { font-size: clamp(28px, 3vw, 40px); line-height: 1.2; letter-spacing: -1.1px; font-weight: 450; margin: 0; }
h3 { font-weight: 500; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin-bottom: 32px; }
.section-heading > p { font-size: 15px; line-height: 1.7; color: var(--muted); margin: 0 0 3px; }
.fuel-section { padding: 40px 0 88px; }
.fuel-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.fuel-card { padding: 32px; border: 1px solid #dce7dd; border-radius: var(--radius); background: #f5faf6; }
.fuel-card:nth-child(2) { background: #fff; }
.fuel-card-heading { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 32px; }
.fuel-grade { font-size: 48px; font-weight: 450; letter-spacing: -2px; color: var(--primary); line-height: 1; }
.chip { border: 1px solid #c3d9c7; color: var(--primary); font-size: 12px; padding: 7px 12px; border-radius: 8px; }
.fuel-card h3 { font-size: 22px; letter-spacing: -.4px; margin: 0 0 16px; }
.fuel-card p { font-size: 15px; line-height: 1.75; color: var(--muted); margin: 0; max-width: 420px; }
.card-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 24px; margin-top: 28px; border-top: 1px solid #dce7dd; }
.card-footer > span { font-size: 12px; color: var(--muted); }
.text-button { display: inline-flex; align-items: center; gap: 18px; padding: 10px 0; border: 0; background: transparent; color: var(--primary); font-size: 14px; font-weight: 500; text-align: left; border-radius: 4px; }
.text-button:hover { color: var(--primary-hover); text-decoration: underline; text-underline-offset: 4px; }
.solutions-section { padding: 80px 0; background: #f7f9f7; }
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.solution-card { display: flex; flex-direction: column; align-items: flex-start; padding: 28px; border: 1px solid #e4e9e3; background: #fff; border-radius: 20px; }
.card-label { color: var(--primary); font-size: 12px; margin-bottom: 32px; }
.solution-card h3 { font-size: 22px; margin: 0 0 16px; letter-spacing: -.4px; }
.solution-card p { font-size: 14px; color: var(--muted); line-height: 1.8; margin: 0 0 28px; }
.solution-card .text-button { margin-top: auto; font-size: 13px; }
.about-section { padding-block: 96px; display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 88px; }
.about-copy h2 { margin-bottom: 26px; }
.about-copy > p:not(.eyebrow) { font-size: 15px; line-height: 1.8; color: var(--muted); }
.about-copy > p.lead { font-size: 18px; line-height: 1.7; color: var(--ink); }
.company-id { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; color: var(--muted); font-size: 12px; }
.principles-list { border: 1px solid var(--outline); border-radius: var(--radius); padding: 8px 28px; }
.principles-list article { display: flex; gap: 20px; padding: 26px 0; }
.principles-list article + article { border-top: 1px solid #e8ece7; }
.principle-number { color: var(--primary); font-size: 12px; background: var(--green-surface); border-radius: 50%; width: 34px; height: 34px; flex-shrink: 0; display: grid; place-items: center; }
.principles-list h3 { font-size: 17px; margin: 4px 0 10px; }
.principles-list p { color: var(--muted); font-size: 13px; line-height: 1.75; margin: 0; }
.contact-section { padding-bottom: 88px; }
.contact-panel { display: grid; grid-template-columns: 1.4fr 1fr; gap: 60px; background: var(--green-surface); border-radius: 28px; padding: 56px; align-items: center; }
.contact-panel h2 { color: #174e29; }
.contact-panel > div > p:not(.eyebrow) { color: var(--muted); font-size: 15px; line-height: 1.8; margin: 20px 0 28px; }
.contact-info { padding-left: 40px; border-left: 1px solid #cfdfd2; }
.contact-info h3 { font-size: 17px; margin: 0 0 18px; }
.contact-info p { font-size: 13px; line-height: 1.8; color: var(--muted); }
.contact-info dl { margin: 22px 0 0; }
.contact-info dt { font-size: 11px; color: var(--muted); margin-top: 16px; }
.contact-info dd { font-size: 12px; font-weight: 500; margin: 8px 0 0; line-height: 1.5; }
#public-contacts a { display: block; margin-bottom: 12px; color: var(--primary); font-size: 14px; overflow-wrap: anywhere; }
.site-footer { padding-bottom: 28px; }
.footer-top { display: flex; align-items: center; gap: 40px; padding: 32px 0; border-top: 1px solid var(--outline); }
.footer-top .brand-name { font-size: 18px; }
.footer-top p { font-size: 13px; color: var(--muted); }
.back-top { font-size: 13px; margin-left: auto; color: var(--primary); white-space: nowrap; }
.footer-bottom { display: flex; align-items: center; gap: 32px; font-size: 11px; color: var(--muted); padding-top: 8px; }
.footer-bottom > span { margin-left: auto; }
.footer-link { background: transparent; border: 0; padding: 8px 0; color: var(--muted); font-size: 11px; }
.footer-link:hover { color: var(--primary); }
.skip { position: fixed; z-index: 30; top: -100px; left: 16px; padding: 12px; background: var(--primary); color: #fff; border-radius: 4px; }
.skip:focus { top: 16px; }

/* Forms share the same Material-inspired typography, spacing and states. */
dialog { color: var(--ink); background: #fff; border: 0; border-radius: 28px; padding: 32px; width: min(580px, calc(100% - 32px)); max-height: calc(100dvh - 32px); box-shadow: 0 16px 64px #20212433; }
dialog::backdrop { background: #20212466; }
body:has(dialog[open]) { overflow: hidden; }
.dialog-top { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.dialog-top .eyebrow { font-size: 11px; margin: 0; letter-spacing: .8px; }
.close-button { border: 0; background: #f1f3f4; border-radius: 50%; width: 36px; height: 36px; font-size: 25px; line-height: 1; color: var(--muted); }
.close-button:hover { background: #e8eaed; }
dialog h2 { font-size: 28px; margin: 24px 0 12px; letter-spacing: -.5px; }
dialog p { font-size: 13px; line-height: 1.75; color: var(--muted); }
form { margin-top: 24px; }
label { display: block; font-size: 12px; font-weight: 500; margin-bottom: 18px; line-height: 1.5; }
input, textarea { width: 100%; padding: 13px 14px; margin-top: 7px; border: 1px solid #bdc1c6; border-radius: 8px; background: #fff; color: var(--ink); font-size: 14px; min-height: 46px; }
input::placeholder, textarea::placeholder { color: #74797d; }
textarea { resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.consent { display: flex; align-items: flex-start; gap: 10px; font-size: 12px; line-height: 1.7; font-weight: 400; color: var(--muted); }
.consent input { accent-color: var(--primary); width: 18px; height: 18px; min-height: 0; margin: 2px 0 0; flex-shrink: 0; }
.consent button { background: none; padding: 0; border: 0; text-decoration: underline; font-size: inherit; color: var(--primary); }
.submit-button { width: 100%; margin-top: 8px; }
.submit-button:disabled, .submit-button:disabled:hover {
  background: #e8eaed;
  color: #73777b;
  border-color: transparent;
  opacity: 1;
  box-shadow: none;
  transition: none;
}
.honeypot { position: absolute; left: -10000px; opacity: 0; width: 1px; height: 1px; overflow: hidden; }
#form-status { font-weight: 500; color: #b3261e; }
#form-status:empty { display: none; }
.success-icon { display: grid; place-items: center; width: 56px; height: 56px; margin-top: 28px; background: var(--green-surface); color: var(--primary); font-size: 28px; border-radius: 50%; }
#success-state h3 { font-size: 22px; }
#success-state .button { width: 100%; margin-top: 16px; }
[hidden] { display: none !important; }

@media (max-width: 1050px) {
  .header-inner { gap: 16px; padding-inline: 24px; }
  .header-inner .brand-name { font-size: 14px; }
  .nav { gap: 0; }
  .nav a { padding-inline: 10px; font-size: 12px; }
  .about-section { gap: 40px; }
  .contact-panel { padding: 40px; gap: 35px; }
  .contact-info { padding-left: 28px; }
  .card-footer { align-items: flex-start; flex-direction: column; gap: 4px; }
  .solutions-grid { gap: 16px; }
  .solution-card { padding: 24px; }
}
@media (max-width: 760px) {
  html { --header-height: 76px; }
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 76px; padding: 16px 20px; gap: 12px; flex-wrap: wrap; }
  .header-inner > .brand { margin-right: auto; flex: 1; min-width: 0; }
  .header-inner .brand-name { font-size: 14px; }
  .brand { gap: 9px; }
  .menu-button { display: block; }
  .nav { display: none; order: 3; width: 100%; padding-top: 10px; border-top: 1px solid #edf0ec; justify-content: space-between; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 9px; }
  .header-actions { gap: 4px; }
  .services-button { padding: 9px 12px; font-size: 11px; gap: 10px; min-height: 40px; }
  .services-menu { right: -44px; width: min(300px, calc(100vw - 40px)); }
  .hero { padding: 60px 0 48px; }
  h1 { font-size: clamp(32px, 6vw, 44px); line-height: 1.2; letter-spacing: -1.2px; }
  .hero-eyebrow { font-size: 10px; margin-bottom: 24px; padding: 7px 14px; }
  .hero-description { font-size: 16px; line-height: 1.7; margin: 24px auto 28px; max-width: 480px; }
  .hero-actions { gap: 10px; }
  .button { font-size: 13px; padding: 13px 20px; gap: 15px; }
  .hero-details { flex-wrap: wrap; gap: 12px 24px; font-size: 11px; line-height: 1.6; margin-top: 28px; }
  .hero-details span + span::before { left: -14px; }
  .section-heading { display: block; margin-bottom: 28px; }
  .section-heading > p { font-size: 14px; margin-top: 20px; }
  h2 { font-size: 30px; letter-spacing: -.7px; }
  .eyebrow { font-size: 12px; margin-bottom: 14px; }
  .fuel-section { padding: 24px 0 56px; }
  .fuel-cards { grid-template-columns: 1fr; gap: 16px; }
  .fuel-card { padding: 26px; border-radius: 20px; }
  .fuel-grade { font-size: 42px; }
  .fuel-card-heading { margin-bottom: 28px; }
  .fuel-card h3 { font-size: 21px; }
  .fuel-card p { font-size: 14px; }
  .card-footer { flex-direction: row; align-items: center; gap: 12px; }
  .card-footer > span { font-size: 11px; }
  .text-button { font-size: 12px; gap: 12px; }
  .solutions-section { padding-block: 56px; }
  .solutions-grid { grid-template-columns: 1fr; }
  .solution-card { padding: 26px; }
  .card-label { margin-bottom: 24px; }
  .solution-card p { margin-bottom: 16px; }
  .about-section { grid-template-columns: 1fr; padding-block: 56px; gap: 32px; }
  .about-copy > p.lead { font-size: 17px; }
  .principles-list { padding-inline: 24px; }
  .contact-section { padding-bottom: 56px; }
  .contact-panel { grid-template-columns: 1fr; padding: 32px 26px; gap: 32px; border-radius: 24px; }
  .contact-panel h2 { font-size: 29px; }
  .contact-info { border-left: 0; border-top: 1px solid #cfdfd2; padding: 28px 0 0; }
  .footer-top { flex-wrap: wrap; gap: 20px; }
  .footer-top > p { order: 3; width: 100%; font-size: 12px; margin: 0; }
  .footer-bottom { flex-wrap: wrap; gap: 12px 20px; }
  .footer-bottom > p { width: 100%; margin-bottom: 0; }
  .footer-bottom > span { margin-left: auto; }
  dialog { padding: 24px; border-radius: 24px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  #date-fields { grid-template-columns: 1fr 1fr; gap: 12px; }
  input[type=date] { min-width: 0; padding-inline: 10px; font-size: 13px; }
  .desktop { display: none; }
}
@media (max-width: 380px) {
  .header-inner { padding-inline: 16px; gap: 8px; }
  .header-inner .brand { padding: 7px 8px; }
  .header-inner .brand-name { font-size: 12px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .button { width: 100%; max-width: 280px; }
  .hero-details span + span::before { display: none; }
  .card-footer { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}