/* =========================================================
   AS FUELS & ENERGY
   Main stylesheet
   ========================================================= */

:root {
    --ink: #07151a;
    --ink-2: #0c2026;
    --ink-3: #143038;
    --paper: #f4f5f1;
    --paper-2: #e9ece6;
    --white: #ffffff;
    --muted: #7c8887;
    --muted-dark: #536466;
    --line: rgba(7, 21, 26, 0.12);
    --line-light: rgba(255, 255, 255, 0.16);
    --accent: #d79a35;
    --accent-light: #efbd65;
    --green: #6c8f68;
    --max-width: 1240px;
    --radius: 4px;
    --shadow: 0 20px 60px rgba(7, 21, 26, 0.12);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: "DM Sans", sans-serif;
    color: var(--ink);
    background: var(--paper);
    line-height: 1.65;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

.container {
    width: min(calc(100% - 48px), var(--max-width));
    margin-inline: auto;
}

/* ---------- Header ---------- */

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: 86px;
    color: var(--white);
    transition: background 0.35s ease, height 0.35s ease, box-shadow 0.35s ease;
}

.site-header.scrolled {
    height: 72px;
    background: rgba(7, 21, 26, 0.96);
    backdrop-filter: blur(18px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.14);
}

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    color: var(--white);
    flex-shrink: 0;
}

.brand-mark {
    position: relative;
    width: 36px;
    height: 42px;
    display: grid;
    place-items: center;
    overflow: hidden;
}

.brand-flame {
    width: 19px;
    height: 29px;
    display: block;
    background: linear-gradient(145deg, var(--accent-light), var(--accent));
    clip-path: polygon(50% 0%, 67% 31%, 92% 51%, 87% 72%, 72% 89%, 50% 100%, 25% 89%, 12% 69%, 19% 48%, 37% 29%);
    filter: drop-shadow(0 0 8px rgba(215, 154, 53, 0.25));
}

.brand-mark::after {
    content: "";
    position: absolute;
    width: 7px;
    height: 13px;
    background: var(--white);
    opacity: 0.75;
    border-radius: 50% 50% 45% 45%;
    transform: translateY(3px);
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
    letter-spacing: 0.08em;
}

.brand-text strong {
    font-family: "Manrope", sans-serif;
    font-size: 14px;
    font-weight: 800;
}

.brand-text small {
    margin-top: 5px;
    font-size: 8px;
    font-weight: 600;
    letter-spacing: 0.26em;
    opacity: 0.68;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    position: relative;
    color: rgba(255, 255, 255, 0.76);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition: color 0.25s ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.25s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 17px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    transition: all 0.25s ease;
}

.nav-cta span {
    color: var(--accent-light);
    font-size: 16px;
    line-height: 1;
}

.nav-cta:hover {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--ink);
}

.nav-cta:hover span {
    color: var(--ink);
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 1px;
    margin: 5px auto;
    background: var(--white);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ---------- Hero ---------- */

.hero {
    position: relative;
    min-height: 790px;
    height: 100vh;
    max-height: 980px;
    display: flex;
    align-items: center;
    color: var(--white);
    background: var(--ink);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 78% 35%, rgba(215, 154, 53, 0.16), transparent 24%),
        radial-gradient(circle at 86% 78%, rgba(108, 143, 104, 0.14), transparent 27%),
        linear-gradient(125deg, #061216 0%, #0a2027 50%, #102d31 100%);
    transform: scale(1.04);
    animation: heroZoom 16s ease-out forwards;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(5, 17, 21, 0.94) 0%, rgba(5, 17, 21, 0.78) 40%, rgba(5, 17, 21, 0.42) 72%, rgba(5, 17, 21, 0.68) 100%),
        linear-gradient(0deg, rgba(5, 17, 21, 0.66), transparent 45%);
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: center;
    gap: 80px;
    padding-top: 80px;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--accent-light);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.22em;
}

.eyebrow-line {
    width: 35px;
    height: 1px;
    background: var(--accent);
}

.hero h1 {
    margin-top: 23px;
    max-width: 850px;
    font-family: "Manrope", sans-serif;
    font-size: clamp(48px, 6.1vw, 86px);
    line-height: 1.01;
    font-weight: 800;
    letter-spacing: -0.055em;
}

.hero h1 span {
    color: rgba(255, 255, 255, 0.58);
}

.hero-copy > p {
    max-width: 620px;
    margin-top: 30px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 16px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 38px;
}

.btn {
    min-height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 0 22px;
    border: 1px solid transparent;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: transform 0.25s ease, background 0.25s ease, border 0.25s ease, color 0.25s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    color: var(--ink);
    background: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-light);
}

.btn-ghost {
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.28);
}

.btn-ghost:hover {
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.08);
}

.hero-side {
    align-self: end;
    padding-bottom: 40px;
}

.hero-stat-card {
    padding: 24px 0 24px 24px;
    border-left: 1px solid rgba(255, 255, 255, 0.32);
    background: linear-gradient(90deg, rgba(255,255,255,0.03), transparent);
}

.stat-number {
    display: block;
    margin-bottom: 12px;
    color: var(--accent-light);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.16em;
}

.hero-stat-card strong {
    display: block;
    font-family: "Manrope", sans-serif;
    font-size: 16px;
    line-height: 1.35;
}

.hero-stat-card p {
    margin-top: 8px;
    color: rgba(255, 255, 255, 0.57);
    font-size: 12px;
    line-height: 1.7;
}

.scroll-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 95px;
    color: rgba(255, 255, 255, 0.45);
    font-size: 8px;
    font-weight: 700;
    letter-spacing: 0.18em;
}

.scroll-line {
    width: 40px;
    height: 1px;
    background: rgba(255, 255, 255, 0.4);
}

.hero-bottom {
    position: absolute;
    z-index: 2;
    left: 0;
    right: 0;
    bottom: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.13);
}

.hero-bottom-inner {
    min-height: 62px;
    display: flex;
    align-items: center;
    gap: 24px;
    color: rgba(255, 255, 255, 0.55);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.hero-bottom-inner i {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--accent);
}

@keyframes heroZoom {
    from { transform: scale(1.04); }
    to { transform: scale(1); }
}

/* ---------- Common Sections ---------- */

.section {
    padding: 125px 0;
}

.section-grid {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 70px;
}

.section-label {
    padding-top: 8px;
}

.section-label span {
    display: block;
    color: var(--accent);
    font-family: "Manrope", sans-serif;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.05em;
}

.section-label p {
    margin-top: 10px;
    color: var(--muted);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.17em;
}

.large-heading {
    max-width: 890px;
    font-family: "Manrope", sans-serif;
    font-size: clamp(34px, 4vw, 58px);
    line-height: 1.15;
    font-weight: 700;
    letter-spacing: -0.045em;
}

.large-heading span {
    color: var(--muted);
}

.intro-description {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 45px;
    max-width: 900px;
    margin-top: 45px;
}

.intro-description p {
    color: var(--muted-dark);
    font-size: 14px;
    line-height: 1.9;
}

.text-link {
    display: inline-flex;
    gap: 20px;
    align-items: center;
    margin-top: 32px;
    padding-bottom: 7px;
    border-bottom: 1px solid var(--ink);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.text-link span {
    color: var(--accent);
    font-size: 18px;
    transition: transform 0.25s ease;
}

.text-link:hover span {
    transform: translateX(5px);
}

.capability-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 90px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.capability-item {
    display: flex;
    gap: 17px;
    padding: 30px 25px;
    border-right: 1px solid var(--line);
}

.capability-item:first-child {
    padding-left: 0;
}

.capability-item:last-child {
    border-right: 0;
}

.capability-icon {
    color: var(--accent);
    font-size: 22px;
    line-height: 1;
}

.capability-item strong {
    display: block;
    font-family: "Manrope", sans-serif;
    font-size: 13px;
}

.capability-item p {
    margin-top: 5px;
    color: var(--muted);
    font-size: 11px;
}

/* ---------- Solutions ---------- */

.solutions-section {
    background: var(--ink);
    color: var(--white);
}

.section-heading {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 70px;
    margin-bottom: 65px;
}

.section-heading h2 {
    font-family: "Manrope", sans-serif;
    font-size: clamp(40px, 4.5vw, 64px);
    line-height: 1.04;
    font-weight: 700;
    letter-spacing: -0.05em;
}

.section-heading h2 em,
.approach-content h2 em,
.sustainability-main h2 em,
.industries-section .section-heading h2 em,
.cta-section h2 em {
    color: var(--accent-light);
    font-style: normal;
}

.section-heading > div:last-child > p {
    max-width: 510px;
    margin-top: 22px;
    color: rgba(255, 255, 255, 0.54);
    font-size: 14px;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--line-light);
    border-left: 1px solid var(--line-light);
}

.solution-card {
    position: relative;
    min-height: 325px;
    padding: 30px;
    border-right: 1px solid var(--line-light);
    border-bottom: 1px solid var(--line-light);
    overflow: hidden;
    transition: background 0.35s ease, transform 0.35s ease;
}

.solution-card::before {
    content: "";
    position: absolute;
    width: 160px;
    height: 160px;
    right: -70px;
    bottom: -80px;
    border: 1px solid rgba(215, 154, 53, 0.25);
    border-radius: 50%;
    transition: transform 0.5s ease;
}

.solution-card:hover {
    background: var(--ink-2);
}

.solution-card:hover::before {
    transform: scale(1.6);
}

.solution-feature {
    background: rgba(215, 154, 53, 0.06);
}

.card-number {
    color: rgba(255, 255, 255, 0.34);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.16em;
}

.solution-symbol {
    margin-top: 38px;
    color: var(--accent);
    font-size: 29px;
}

.solution-card h3 {
    position: relative;
    margin-top: 20px;
    font-family: "Manrope", sans-serif;
    font-size: 22px;
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.solution-card p {
    position: relative;
    max-width: 300px;
    margin-top: 14px;
    color: rgba(255, 255, 255, 0.49);
    font-size: 12px;
    line-height: 1.7;
}

.card-arrow {
    position: absolute;
    right: 30px;
    bottom: 28px;
    color: var(--accent-light);
    font-size: 20px;
    transition: transform 0.25s ease;
}

.solution-card:hover .card-arrow {
    transform: translate(4px, -4px);
}

/* ---------- Approach ---------- */

.approach-section {
    background: var(--paper-2);
}

.compact {
    display: block;
    margin-bottom: 45px;
}

.approach-content h2 {
    font-family: "Manrope", sans-serif;
    font-size: clamp(40px, 4.2vw, 61px);
    line-height: 1.05;
    font-weight: 700;
    letter-spacing: -0.05em;
}

.approach-content h2 em {
    color: var(--green);
}

.compact p {
    max-width: 530px;
    margin-top: 22px;
    color: var(--muted-dark);
    font-size: 14px;
}

.approach-list {
    border-top: 1px solid var(--line);
}

.approach-item {
    display: grid;
    grid-template-columns: 70px 1fr;
    gap: 30px;
    padding: 28px 0;
    border-bottom: 1px solid var(--line);
}

.approach-number {
    color: var(--accent);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.1em;
}

.approach-item h3 {
    font-family: "Manrope", sans-serif;
    font-size: 17px;
    font-weight: 700;
}

.approach-item p {
    max-width: 620px;
    margin-top: 5px;
    color: var(--muted-dark);
    font-size: 12px;
}

/* ---------- Sustainability ---------- */

.sustainability-section {
    position: relative;
    min-height: 720px;
    display: flex;
    align-items: center;
    color: var(--white);
    overflow: hidden;
    background: var(--ink-2);
}

.sustainability-image {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 72% 30%, rgba(108, 143, 104, 0.22), transparent 24%),
        radial-gradient(circle at 84% 75%, rgba(215, 154, 53, 0.10), transparent 28%),
        linear-gradient(135deg, #061619 0%, #102d2b 52%, #0a1e22 100%);
}

.sustainability-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(5, 18, 22, 0.95), rgba(5, 18, 22, 0.73) 48%, rgba(5, 18, 22, 0.48)),
        linear-gradient(0deg, rgba(5,18,22,0.65), transparent);
}

.sustainability-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 70px;
}

.sustainability-label {
    padding-top: 8px;
}

.sustainability-label span {
    color: var(--accent-light);
    font-size: 12px;
    font-weight: 800;
}

.sustainability-label p {
    margin-top: 10px;
    color: rgba(255,255,255,0.48);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.17em;
}

.sustainability-main {
    max-width: 850px;
}

.sustainability-main h2 {
    margin-top: 22px;
    font-family: "Manrope", sans-serif;
    font-size: clamp(44px, 5vw, 72px);
    line-height: 1.02;
    letter-spacing: -0.055em;
}

.sustainability-main h2 em {
    color: var(--accent-light);
}

.sustainability-main > p {
    max-width: 620px;
    margin-top: 30px;
    color: rgba(255,255,255,0.65);
    font-size: 14px;
    line-height: 1.9;
}

.resource-flow {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    align-items: center;
    gap: 20px;
    max-width: 750px;
    margin-top: 60px;
    padding-top: 28px;
    border-top: 1px solid rgba(255,255,255,0.18);
}

.resource-flow > div {
    display: flex;
    flex-direction: column;
}

.resource-flow span {
    color: var(--accent-light);
    font-size: 9px;
    font-weight: 800;
}

.resource-flow strong {
    margin-top: 7px;
    font-size: 10px;
    letter-spacing: 0.12em;
}

.resource-flow small {
    margin-top: 5px;
    color: rgba(255,255,255,0.45);
    font-size: 10px;
}

.resource-flow b {
    color: rgba(255,255,255,0.38);
    font-size: 20px;
    font-weight: 400;
}

/* ---------- Industries ---------- */

.industries-section {
    background: var(--paper);
}

.industries-section .section-heading {
    align-items: start;
}

.industries-section .section-heading h2 {
    color: var(--ink);
}

.industries-section .section-heading > div:last-child > p {
    color: var(--muted-dark);
}

.industry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}

.industry-card {
    min-height: 220px;
    padding: 30px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    transition: background 0.3s ease, transform 0.3s ease;
}

.industry-card:hover {
    background: var(--white);
    transform: translateY(-3px);
}

.industry-card span {
    color: var(--accent);
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 0.12em;
}

.industry-card h3 {
    margin-top: 38px;
    font-family: "Manrope", sans-serif;
    font-size: 20px;
    letter-spacing: -0.02em;
}

.industry-card p {
    max-width: 290px;
    margin-top: 10px;
    color: var(--muted);
    font-size: 11px;
    line-height: 1.7;
}

/* ---------- CTA ---------- */

.cta-section {
    position: relative;
    overflow: hidden;
    background: var(--accent);
    color: var(--ink);
}

.cta-pattern {
    position: absolute;
    width: 700px;
    height: 700px;
    right: -280px;
    top: -350px;
    border: 1px solid rgba(7,21,26,0.14);
    border-radius: 50%;
}

.cta-pattern::before,
.cta-pattern::after {
    content: "";
    position: absolute;
    inset: 80px;
    border: 1px solid rgba(7,21,26,0.12);
    border-radius: 50%;
}

.cta-pattern::after {
    inset: 180px;
}

.cta-inner {
    position: relative;
    z-index: 1;
    min-height: 430px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.cta-section .eyebrow {
    color: rgba(7,21,26,0.64);
}

.cta-section .eyebrow-line {
    background: var(--ink);
}

.cta-section h2 {
    margin-top: 20px;
    font-family: "Manrope", sans-serif;
    font-size: clamp(42px, 5vw, 70px);
    line-height: 1.02;
    letter-spacing: -0.055em;
}

.cta-section h2 em {
    color: var(--white);
}

.cta-section p {
    max-width: 570px;
    margin-top: 22px;
    color: rgba(7,21,26,0.68);
    font-size: 14px;
}

.btn-light {
    flex-shrink: 0;
    background: var(--ink);
    color: var(--white);
}

.btn-light:hover {
    background: var(--white);
    color: var(--ink);
}

.btn-light span {
    color: var(--accent);
}

/* ---------- Footer ---------- */

.site-footer {
    padding: 70px 0 25px;
    background: #041015;
    color: var(--white);
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    padding-bottom: 70px;
}

.footer-brand p {
    max-width: 330px;
    margin-top: 25px;
    color: rgba(255,255,255,0.42);
    font-size: 12px;
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.footer-links h4 {
    margin-bottom: 18px;
    color: rgba(255,255,255,0.45);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.footer-links a {
    display: block;
    width: fit-content;
    margin-bottom: 9px;
    color: rgba(255,255,255,0.76);
    font-size: 11px;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--accent-light);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.32);
    font-size: 9px;
    letter-spacing: 0.04em;
}

/* ---------- Back to top ---------- */

.back-to-top {
    position: fixed;
    z-index: 900;
    right: 22px;
    bottom: 22px;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--ink);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.25s ease;
    box-shadow: 0 10px 30px rgba(7,21,26,0.1);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--ink);
    color: var(--white);
}

/* ---------- Reveal animation ---------- */

.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.75s ease, transform 0.75s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Responsive ---------- */

@media (max-width: 1050px) {
    .main-nav {
        gap: 18px;
    }

    .hero-content {
        grid-template-columns: 1fr 230px;
        gap: 45px;
    }

    .section-grid,
    .section-heading,
    .sustainability-content {
        grid-template-columns: 110px minmax(0, 1fr);
        gap: 45px;
    }

    .solution-card {
        min-height: 300px;
    }
}

@media (max-width: 850px) {
    .container {
        width: min(calc(100% - 36px), var(--max-width));
    }

    .site-header {
        height: 76px;
    }

    .site-header.scrolled {
        height: 68px;
    }

    .menu-toggle {
        display: block;
        z-index: 10;
    }

    .main-nav {
        position: fixed;
        inset: 0;
        z-index: 5;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 22px;
        padding: 90px 30px 40px;
        background: rgba(4, 16, 21, 0.98);
        transform: translateX(100%);
        transition: transform 0.35s ease;
    }

    .main-nav.open {
        transform: translateX(0);
    }

    .nav-link {
        font-size: 22px;
    }

    .nav-cta {
        margin-top: 12px;
        padding: 14px 18px;
        font-size: 11px;
    }

    .menu-toggle.open span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

    .menu-toggle.open span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.open span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    .hero {
        min-height: 760px;
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-side {
        display: none;
    }

    .hero-bottom-inner {
        overflow-x: auto;
        white-space: nowrap;
        scrollbar-width: none;
    }

    .hero-bottom-inner::-webkit-scrollbar {
        display: none;
    }

    .section {
        padding: 90px 0;
    }

    .section-grid,
    .section-heading,
    .sustainability-content {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .section-label {
        display: flex;
        gap: 12px;
        align-items: center;
        padding: 0;
    }

    .section-label p {
        margin-top: 0;
    }

    .intro-description {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .capability-strip {
        grid-template-columns: 1fr;
        margin-top: 60px;
    }

    .capability-item,
    .capability-item:first-child {
        padding: 24px 0;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .capability-item:last-child {
        border-bottom: 0;
    }

    .solutions-grid,
    .industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sustainability-section {
        min-height: 760px;
    }

    .resource-flow {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .resource-flow b {
        transform: rotate(90deg);
        width: fit-content;
        margin-left: 5px;
    }

    .cta-inner {
        min-height: 500px;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: 50px;
    }
}

@media (max-width: 580px) {
    .container {
        width: min(calc(100% - 28px), var(--max-width));
    }

    .hero {
        min-height: 700px;
    }

    .hero h1 {
        font-size: clamp(42px, 12vw, 60px);
    }

    .hero-copy > p {
        font-size: 14px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }

    .section {
        padding: 75px 0;
    }

    .large-heading {
        font-size: 34px;
    }

    .solutions-grid,
    .industry-grid {
        grid-template-columns: 1fr;
    }

    .solution-card {
        min-height: 290px;
    }

    .section-heading h2,
    .approach-content h2 {
        font-size: 40px;
    }

    .sustainability-main h2 {
        font-size: 43px;
    }

    .cta-section h2 {
        font-size: 43px;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}


/* ---------- WhatsApp contact ---------- */
.footer-links a[href*="wa.me"] { color: var(--accent-light); }
.footer-links a[href*="wa.me"]:hover { color: var(--white); }


/* ---------- Contact actions ---------- */
.contact-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-shrink: 0;
}

.btn-whatsapp {
    background: transparent;
    color: var(--ink);
    border-color: rgba(7, 21, 26, 0.45);
}

.btn-whatsapp:hover {
    background: var(--white);
    border-color: var(--white);
}

.btn-whatsapp span {
    color: var(--ink);
}

@media (max-width: 850px) {
    .contact-actions {
        width: 100%;
        max-width: 330px;
    }
}


.footer-contact-text {
    display: block;
    width: fit-content;
    margin-bottom: 9px;
    color: rgba(255,255,255,0.76);
    font-size: 11px;
}