:root {
      --green: #176b45;
      --green-dark: #103f2b;
      --green-light: #e8f5ee;

      --dark: #17211b;
      --text: #34423a;
      --muted: #617068;

      --light: #f6faf8;
      --white: #ffffff;
      --border: #dfe8e2;

      --red: #c74a4a;
      --red-light: #fdeaea;

      --amber: #b9770e;
      --amber-light: #fdf3e0;

      --blue: #356da8;
      --blue-light: #edf4fb;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family:
        Inter,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
      color: var(--dark);
      line-height: 1.65;
      background: var(--white);
    }

    .container {
      width: min(92%, 1000px);
      margin-inline: auto;
    }

    /* =========================
       HEADER
    ========================= */

    header {
      position: sticky;
      top: 0;
      z-index: 20;

      padding: 15px 0;

      background: rgba(255,255,255,.94);
      backdrop-filter: blur(10px);

      border-bottom: 1px solid var(--border);
    }

    header .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
    }

    .logo {
      color: var(--green);
      font-size: 24px;
      font-weight: 800;
      letter-spacing: -0.6px;
      text-decoration: none;
    }

    nav.main-nav {
      display: flex;
      gap: 22px;
      align-items: center;
    }

    nav.main-nav a {
      color: var(--muted);
      text-decoration: none;
      font-size: 14px;
      font-weight: 600;
    }

    nav.main-nav a:hover {
      color: var(--green);
    }

    .nav-right {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .nav-cta {
      padding: 9px 17px;
      border-radius: 10px;
      background: var(--green);
      color: var(--white);
      text-decoration: none;
      font-size: 14px;
      font-weight: 700;
    }

    .nav-cta:hover {
      background: #0f5537;
    }

    .lang-switch {
      position: relative;
    }

    .lang-switch summary {
      list-style: none;
      cursor: pointer;
      padding: 8px 11px;

      border: 1px solid var(--border);
      border-radius: 10px;

      font-size: 13px;
      font-weight: 600;
      color: var(--muted);

      background: var(--white);
    }

    .lang-switch summary::-webkit-details-marker {
      display: none;
    }

    .lang-menu {
      position: absolute;
      right: 0;
      top: calc(100% + 6px);

      min-width: 170px;
      padding: 8px;

      display: flex;
      flex-direction: column;

      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 12px;

      box-shadow: 0 12px 30px rgba(0,0,0,.10);
    }

    .lang-menu a {
      padding: 8px 11px;
      border-radius: 8px;

      color: var(--dark);
      text-decoration: none;
      font-size: 14px;
    }

    .lang-menu a:hover {
      background: var(--light);
    }

    /* =========================
       HERO
    ========================= */

    .hero {
      padding: 70px 0 65px;
      background:
        radial-gradient(
          circle at 85% 30%,
          rgba(23,107,69,.08),
          transparent 35%
        ),
        var(--light);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 55px;
      align-items: center;
    }

    .pill {
      display: inline-block;

      padding: 5px 14px;
      margin-bottom: 17px;

      border-radius: 30px;

      background: var(--green-light);
      color: var(--green);

      font-size: 13px;
      font-weight: 700;
    }

    .hero h1 {
      max-width: 760px;

      margin: 0 0 20px;

      font-size: clamp(38px, 5.4vw, 58px);
      line-height: 1.06;

      letter-spacing: -2px;
    }

    .hero h1 span {
      color: var(--green);
    }

    .hero .subtitle {
      max-width: 680px;

      margin: 0;

      color: var(--text);
      font-size: 19px;
    }

    .hero .subtitle strong {
      color: var(--dark);
    }

    .cta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 13px;

      margin-top: 30px;
    }

    .button-primary {
      display: inline-block;

      padding: 15px 26px;

      border-radius: 12px;

      background: var(--green);
      color: var(--white);

      text-decoration: none;
      font-size: 16px;
      font-weight: 700;
    }

    .button-primary:hover {
      background: #0f5537;
    }

    .button-outline {
      display: inline-block;

      padding: 13px 25px;

      border: 2px solid var(--border);
      border-radius: 12px;

      background: transparent;
      color: var(--dark);

      text-decoration: none;
      font-size: 15px;
      font-weight: 600;
    }

    .button-outline:hover {
      background: var(--white);
    }

    .hero-reassurance {
      margin-top: 17px;

      color: var(--muted);
      font-size: 13px;
    }

    /* =========================
       HERO MOCKUP
    ========================= */

    .phone-wrap {
      display: flex;
      justify-content: center;
    }

    .phone {
      width: 292px;

      padding: 11px;

      border-radius: 40px;

      background: var(--dark);

      box-shadow:
        0 30px 65px rgba(23,33,27,.25);

      animation: float 6s ease-in-out infinite;
    }

    .phone-screen {
      padding: 18px 14px 20px;

      border-radius: 31px;

      background: var(--light);
    }

    .app-top {
      display: flex;
      justify-content: space-between;
      align-items: center;

      margin-bottom: 12px;
    }

    .app-logo {
      color: var(--green);
      font-size: 15px;
      font-weight: 800;
    }

    .app-status {
      padding: 3px 8px;

      border: 1px solid var(--border);
      border-radius: 20px;

      background: var(--white);

      color: var(--muted);
      font-size: 10px;
    }

    .app-card {
      margin-bottom: 10px;
      padding: 17px 12px;

      border-radius: 16px;

      background: var(--green);
      color: var(--white);

      text-align: center;
    }

    .app-card .label {
      margin: 0;

      font-size: 11px;
      opacity: .85;
    }

    .app-card .big {
      margin: 3px 0;

      font-size: 35px;
      font-weight: 800;
      line-height: 1;
    }

    .app-card .big span {
      font-size: 14px;
      font-weight: 600;
    }

    .app-card .sub {
      margin: 7px 0 0;

      font-size: 11px;
      opacity: .85;
    }

    .app-section-title {
      margin: 13px 2px 7px;

      color: var(--muted);
      font-size: 10px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: .5px;
    }

    .app-row {
      display: flex;
      justify-content: space-between;
      align-items: center;

      padding: 9px 10px;
      margin-bottom: 7px;

      border: 1px solid var(--border);
      border-radius: 10px;

      background: var(--white);

      font-size: 11px;
    }

    .app-row strong {
      font-size: 12px;
    }

    .app-row span {
      color: var(--muted);
    }

    .app-alert {
      margin-top: 10px;
      padding: 9px 10px;

      border-left: 4px solid var(--amber);
      border-radius: 8px;

      background: var(--amber-light);
      color: var(--amber);

      font-size: 10px;
      font-weight: 700;
    }

    @keyframes float {
      0%,100% {
        transform: translateY(0);
      }

      50% {
        transform: translateY(-9px);
      }
    }

    @media (prefers-reduced-motion: reduce) {
      .phone {
        animation: none;
      }
    }

    /* =========================
       TRUST
    ========================= */

    .trust-band {
      padding: 30px 0;

      border-bottom: 1px solid var(--border);

      background: var(--white);
    }

    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 20px;
    }

    .trust-item {
      text-align: center;
    }

    .trust-item .emoji {
      display: block;

      margin-bottom: 6px;

      font-size: 25px;
    }

    .trust-item strong {
      display: block;

      margin-bottom: 2px;

      color: var(--green);

      font-size: 14px;
    }

    .trust-item span {
      color: var(--muted);
      font-size: 12px;
    }

    /* =========================
       GENERAL CONTENT
    ========================= */

    main {
      padding-bottom: 70px;
    }

    section.content {
      padding-top: 55px;
    }

    h2 {
      margin: 0 0 15px;

      font-size: 31px;
      line-height: 1.2;

      letter-spacing: -.7px;
    }

    h3 {
      margin-top: 28px;

      font-size: 20px;
    }

    main p,
    main li {
      color: var(--text);
      font-size: 16px;
    }

    main ul {
      padding-left: 22px;
    }

    main li {
      margin-bottom: 8px;
    }

    .intro {
      max-width: 760px;

      margin-bottom: 30px;

      color: var(--muted);
      font-size: 18px;
    }

    /* =========================
       RESTE À VIVRE
    ========================= */

    .calculation {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 15px;

      margin: 30px 0;
    }

    .calc-card {
      padding: 22px;

      border: 1px solid var(--border);
      border-radius: 15px;

      background: var(--white);
    }

    .calc-card span {
      display: block;

      margin-bottom: 5px;

      color: var(--muted);
      font-size: 13px;
    }

    .calc-card strong {
      font-size: 23px;
    }

    .calc-card.highlight {
      border-color: #b8dcca;
      background: var(--green-light);
    }

    .calc-card.highlight strong {
      color: var(--green);
    }

    .logic-box {
      margin: 30px 0;
      padding: 27px 30px;

      border-radius: 17px;

      background: var(--light);

      border-left: 5px solid var(--green);
    }

    .logic-box h3 {
      margin-top: 0;
      color: var(--green);
    }

    /* =========================
       BUDGET JOURNALIER
    ========================= */

    .daily-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 25px;

      margin-top: 30px;
    }

    .daily-example {
      padding: 28px;

      border-radius: 17px;

      background: var(--green-dark);
      color: var(--white);
    }

    .daily-example .small {
      color: #bed3c8;
      font-size: 13px;
    }

    .daily-example .amount {
      margin: 7px 0;

      font-size: 46px;
      font-weight: 800;
      line-height: 1;
    }

    .daily-example p {
      color: #bed3c8;
      font-size: 14px;
    }

    .daily-explanation {
      padding: 25px;

      border: 1px solid var(--border);
      border-radius: 17px;
    }

    /* =========================
       ENVELOPPES
    ========================= */

    .envelope-section {
      margin-top: 65px;
      padding: 45px 0;

      background: var(--light);
    }

    .envelope-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 25px;

      margin-top: 28px;
    }

    .envelope-card {
      padding: 25px;

      border: 1px solid var(--border);
      border-radius: 16px;

      background: var(--white);
    }

    .envelope-card h3 {
      margin-top: 0;
    }

    .envelope-flow {
      margin-top: 20px;
      padding: 18px;

      border-radius: 12px;

      background: var(--light);

      font-size: 14px;
    }

    .envelope-flow strong {
      color: var(--green);
    }

    .warning-box {
      margin-top: 20px;
      padding: 17px;

      border-left: 4px solid var(--amber);
      border-radius: 9px;

      background: var(--amber-light);

      color: var(--amber);

      font-size: 14px;
      font-weight: 600;
    }

    /* =========================
       VASES COMMUNICANTS
    ========================= */

    .communicating {
      margin-top: 35px;
      padding: 28px;

      border-radius: 17px;

      background: var(--white);

      border: 1px solid var(--border);
    }

    .communicating-title {
      margin-bottom: 18px;

      font-size: 17px;
      font-weight: 700;
    }

    .flow {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    .flow-item {
      padding: 12px 15px;

      border: 1px solid var(--border);
      border-radius: 11px;

      background: var(--light);

      text-align: center;
      font-size: 13px;
    }

    .flow-item strong {
      display: block;
    }

    .arrow {
      color: var(--green);
      font-size: 22px;
      font-weight: 800;
    }

    /* =========================
       FEATURES
    ========================= */

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(2,1fr);
      gap: 18px;

      margin-top: 28px;
    }

    .feature-card {
      padding: 22px 24px;

      border: 1px solid var(--border);
      border-radius: 14px;

      background: var(--white);
    }

    .feature-card .emoji {
      font-size: 25px;
    }

    .feature-card h3 {
      margin: 9px 0 5px;

      font-size: 17px;
    }

    .feature-card p {
      margin: 0;

      color: var(--muted);
      font-size: 14px;
    }

    /* =========================
       PRIVACY
    ========================= */

    .privacy {
      margin-top: 65px;
      padding: 45px 0;

      background: var(--light);
    }

    .privacy-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 25px;

      margin-top: 28px;
    }

    .privacy-card {
      padding: 24px;

      border-radius: 15px;

      background: var(--white);

      border: 1px solid var(--border);
    }

    .privacy-card h3 {
      margin-top: 0;
    }

    .privacy-card ul {
      margin-bottom: 0;
    }

    /* =========================
       BANK
    ========================= */

    .bank-box {
      margin-top: 55px;
      padding: 30px;

      border-radius: 17px;

      background: var(--blue-light);

      border-left: 5px solid var(--blue);
    }

    .bank-box h3 {
      margin-top: 0;
      color: var(--blue);
    }

    /* =========================
       FAQ
    ========================= */

    .faq {
      margin-top: 65px;
    }

    details {
      margin-bottom: 11px;
      padding: 14px 17px;

      border: 1px solid var(--border);
      border-radius: 12px;

      background: var(--white);
    }

    summary {
      cursor: pointer;

      font-size: 15px;
      font-weight: 700;
    }

    details p {
      margin: 10px 0 0;

      color: var(--muted);
      font-size: 14px;
    }

    /* =========================
       FINAL CTA
    ========================= */

    .final-cta {
      margin-top: 65px;
      padding: 50px 30px;

      border-radius: 23px;

      background: var(--green-dark);

      color: var(--white);

      text-align: center;
    }

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

    .final-cta p {
      max-width: 650px;

      margin: 12px auto 28px;

      color: #bed3c8;
      font-size: 17px;
    }

    .final-cta .button-primary {
      background: var(--white);
      color: var(--green);
    }

    .final-cta .button-primary:hover {
      background: var(--green-light);
    }

    .mini-features {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 20px 35px;

      margin-top: 27px;

      color: #bed3c8;
      font-size: 13px;
    }

    /* =========================
       FOOTER
    ========================= */

    footer {
      padding: 32px 0;

      border-top: 1px solid var(--border);

      color: var(--muted);
      font-size: 13px;
    }

    footer .container {
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }

    footer a {
      margin-left: 18px;

      color: var(--muted);

      text-decoration: none;
    }

    footer a:hover {
      text-decoration: underline;
    }

    /* =========================
       RESPONSIVE
    ========================= */

    @media (max-width: 860px) {

      #calculateur div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
      }

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

      .phone-wrap {
        margin-top: 10px;
      }

      .trust-grid {
        grid-template-columns: 1fr 1fr;
      }

      .calculation,
      .daily-box,
      .envelope-grid,
      .privacy-grid {
        grid-template-columns: 1fr;
      }

      .feature-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 600px) {

      .lang-menu {
    left: 0;
    right: auto;
      }

      .hero {
        padding: 48px 0;
      }

      .hero h1 {
        font-size: 39px;
      }

      .hero .subtitle {
        font-size: 17px;
      }

      .trust-grid {
        grid-template-columns: 1fr;
      }

      h2 {
        font-size: 27px;
      }

      .final-cta {
        padding: 38px 20px;
      }

      footer .container {
        flex-direction: column;
      }

      footer a {
        margin-left: 0;
        margin-right: 15px;
      }
    }

    /* =========================
       HEADER RESPONSIVE
    ========================= */

    @media (max-width: 860px) {

      header .container {
        flex-wrap: wrap;
        row-gap: 10px;
        column-gap: 12px;
      }

      .logo {
        order: 1;
      }

      .nav-right {
        order: 2;
        margin-left: auto;
        flex-wrap: wrap;
        justify-content: flex-end;
      }

      nav.main-nav {
        order: 3;
        flex: 0 0 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 8px 16px;
      }

      nav.main-nav a {
        display: inline-block;
        font-size: 13px;
      }

      .lang-switch summary,
      .nav-cta {
        white-space: nowrap;
      }

      .nav-cta {
        padding: 8px 12px;
        font-size: 13px;
      }
    }

    @media (max-width: 600px) {

      header .container {
        row-gap: 8px;
      }

      .logo {
        flex: 1 1 auto;
        font-size: 21px;
      }

      nav.main-nav {
        order: 2;
        flex-basis: 100%;
        gap: 6px 12px;
      }

      nav.main-nav a {
        font-size: 12px;
      }

      .nav-right {
        order: 3;
        flex: 1 1 100%;
        margin-left: 0;
        justify-content: flex-start;
      }

      .lang-switch summary,
      .nav-cta {
        padding: 7px 10px;
        font-size: 12px;
      }
    }