/* ========== CSS Reset & Base ========== */
    *, *::before, *::after {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --navy: hsl(233, 26%, 24%);
      --navy-light: hsl(233, 8%, 62%);
      --teal-start: hsl(160, 65%, 50%);
      --teal-end: hsl(192, 70%, 51%);
      --white: hsl(0, 0%, 100%);
      --light-gray: hsl(0, 0%, 98%);
      --very-light-gray: hsl(220, 16%, 96%);
      --gradient-primary: linear-gradient(135deg, var(--teal-start) 0%, var(--teal-end) 100%);
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: 'Public Sans', sans-serif;
      font-size: 16px;
      line-height: 1.5;
      color: var(--navy);
      background-color: var(--white);
      -webkit-font-smoothing: antialiased;
    }

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

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

    ul {
      list-style: none;
    }

    .container {
      max-width: 1110px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* ========== Button Styles ========== */
    .btn {
      display: inline-block;
      background: var(--gradient-primary);
      color: var(--white);
      padding: 0.875rem 2rem;
      border-radius: 50px;
      font-size: 0.875rem;
      font-weight: 500;
      border: none;
      cursor: pointer;
      transition: opacity 0.2s ease;
    }

    .btn:hover {
      opacity: 0.85;
    }

    /* ========== Header ========== */
    .header {
      background: var(--white);
      position: relative;
      z-index: 100;
    }

    .header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 1rem;
      padding-bottom: 1rem;
      margin-top: 15px;
      margin-bottom: 15px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 0.25rem;
    }

    .nav-desktop {
      display: none;
    }

    .nav-desktop ul {
      display: flex;
      gap: 2rem;
    }

    .nav-desktop a {
      color: var(--navy-light);
      font-size: 0.875rem;
      padding: 1.5rem 0;
      position: relative;
      transition: color 0.2s ease;
    }

    .nav-desktop a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--gradient-primary);
      opacity: 0;
      transition: opacity 0.2s ease;
    }

    .nav-desktop a:hover::after,
    .nav-desktop a.active::after {
      opacity: 1;
    }

    .btn-desktop {
      display: none;
    }

    .menu-toggle {
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
    }

    .menu-toggle img {
      width: 24px;
      height: 20px;
      color: var(--navy);
    }

    .menu-toggle .icon-close {
      display: none;
    }

    .menu-toggle.active .icon-open {
      display: none;
    }

    .menu-toggle.active .icon-close {
      display: block;
    }

    .icon-close {
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
      position: absolute;
      margin-bottom: 40px;
      right: 0;
      top: 0;
    }

    .icon-close img {
      width: 24px;
      height: 24px;
      margin-right: auto;
    }

    /* Mobile Menu */
    .mobile-nav-overlay {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(to bottom, hsla(233, 26%, 24%, 0.8), transparent);
      z-index: 90;
    }

    .mobile-nav-overlay.active {
      display: block;
    }

    .mobile-nav {
      display: none;
      position: fixed;
      top: 5rem;
      left: 1rem;
      right: 1rem;
      background: var(--white);
      border-radius: 8px;
      padding: 2rem;
      z-index: 95;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
      animation: fadeIn 0.3s ease;
    }

    .mobile-nav.active {
      display: block;
    }

    @keyframes fadeIn {
      from {
        opacity: 0;
        transform: translateY(-10px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .mobile-nav ul {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 1.5rem;
    }

    .mobile-nav a {
      font-size: 1.125rem;
      color: var(--navy);
      transition: color 0.2s ease;
        position: relative;
      padding-bottom: 0.5rem;
    }

    .mobile-nav a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--gradient-primary);
      opacity: 0;
      transition: opacity 0.2s ease;
    }

    .mobile-nav a:hover::after,
    .mobile-nav a.active::after {
      opacity: 1;
    }

    /* ========== Hero Section ========== */
    .hero {
      background: var(--very-light-gray);
      overflow: hidden;
      position: relative;
    }

    .hero .container {
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .hero-phones-mobile {
      position: relative;
      width: 100%;
      height: 400px;
      overflow: hidden;
    }

    .hero-phones-mobile img {
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      top: 0;
    }

    .hero-phone-m2 {
        top: 20px;
        left: calc(50% + 80px);
        width: 800px;
    }

    .hero-phone-m1 {
        top: 0;
        left: calc(50% - 80px);
        width: 400px;
    }

    .hero-content {
      text-align: center;
      padding: 0 1rem 3rem;
      margin-top: 0px;
    }

    .hero h1 {
      font-size: 2.5rem;
      font-weight: 300;
      line-height: 1.15;
      color: var(--navy);
      margin-bottom: 1.5rem;
    }

    .hero p {
      color: var(--navy-light);
      font-size: 1rem;
      line-height: 1.65;
      margin-bottom: 2rem;
      max-width: 440px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-phones-desktop {
      display: block;
      margin-left: 40px;
    }

    .hero-phone-1 {
        width: 300px;
        position: absolute;
        top: 90px;
        margin-left: 75px;
    }

    .hero-phone-2 {
        width: 400px;
        margin-top: 45px;
    }

    /* ========== Features Section ========== */
    .features {
      background: var(--light-gray);
      padding: 4rem 0;
    }

    .features-header {
      text-align: center;
      margin-bottom: 3rem;
    }

    .features-header h2 {
      font-size: 2rem;
      font-weight: 300;
      color: var(--navy);
      margin-bottom: 1.5rem;
    }

    .features-header p {
      color: var(--navy-light);
      line-height: 1.65;
      max-width: 640px;
      margin: 0 auto;
    }

    .features-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }

    .feature-card {
      text-align: center;
    }

    .feature-icon {
      width: 64px;
      height: 64px;
      border-radius: 50%;
      background: var(--gradient-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 1.5rem;
    }

    .feature-icon svg {
      width: 32px;
      height: 32px;
      color: var(--white);
    }

    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 400;
      color: var(--navy);
      margin-bottom: 1rem;
    }

    .feature-card p {
      color: var(--navy-light);
      font-size: 0.875rem;
      line-height: 1.65;
    }

    /* ========== Articles Section ========== */
    .articles {
      background: var(--very-light-gray);
      padding: 4rem 0;
    }

    .articles h2 {
      font-size: 2rem;
      font-weight: 300;
      color: var(--navy);
      margin-bottom: 2rem;
      text-align: center;
    }

    .articles-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.5rem;
    }

    .article-card {
      background: var(--white);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      transition: box-shadow 0.3s ease, transform 0.3s ease;
      cursor: pointer;
    }

    .article-card:hover {
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
      transform: translateY(-2px);
    }

    .article-image {
      height: 200px;
      overflow: hidden;
    }

    .article-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .article-card:hover .article-image img {
      transform: scale(1.05);
    }

    .article-content {
      padding: 1.5rem;
    }

    .article-author {
      font-size: 0.75rem;
      color: var(--navy-light);
    }

    .article-title {
      font-size: 1rem;
      font-weight: 400;
      color: var(--navy);
      margin: 0.5rem 0;
      line-height: 1.4;
      transition: color 0.2s ease;
    }

    .article-card:hover .article-title {
      color: var(--teal-start);
    }

    .article-excerpt {
      font-size: 0.875rem;
      color: var(--navy-light);
      line-height: 1.55;
    }

    /* ========== Footer ========== */
    .footer {
      background: var(--navy);
      padding: 2.5rem 0;
    }

    .footer .container {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 2rem;
    }

    .footer-brand {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 2rem;
    }

    .footer .logo-text {
      color: var(--white);
    }

    .social-links {
      display: flex;
      gap: 1rem;
    }

    .social-links a {
      color: var(--white);
      transition: color 0.2s ease;
    }

    .social-links a:hover {
      color: var(--teal-start);
    }

    .social-links svg {
      width: 20px;
      height: 20px;
    }

    .footer-nav {
      display: flex;
      flex-direction: column;
      gap: 2rem;
      text-align: center;
    }

    .footer-nav-col {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }

    .footer-nav a {
      color: hsla(0, 0%, 100%, 0.9);
      font-size: 0.875rem;
      transition: color 0.2s ease;
    }

    .footer-nav a:hover {
      color: var(--teal-start);
    }

    .footer-cta {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 1.5rem;
    }

    .footer-copyright {
      color: hsla(0, 0%, 100%, 0.5);
      font-size: 0.875rem;
    }

    @media (min-width: 768px) {
      .nav-desktop {
        display: block;
      }

      .btn-desktop {
        display: inline-block;
      }

      .menu-toggle {
        display: none;
      }

      .hero .container {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding-bottom: 6rem;
      }

      .hero-content {
        text-align: left;
        padding: 0;
        max-width: 445px;
        margin-top: 0;
      }

      .hero h1 {
        font-size: 3rem;
      }

      .hero-phones-mobile {
        display: none;
      }

      .hero-phones-desktop {
        display: block;
        position: relative;
        width: auto;
        margin-left: 60px;
      }

      .features-grid {
        grid-template-columns: repeat(4, 1fr);
      }

      .articles-grid {
        grid-template-columns: repeat(4, 1fr);
      }

      .footer .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
      }

      .footer-brand {
        align-items: flex-start;
      }

      .footer-nav {
        flex-direction: row;
        gap: 4rem;
        text-align: left;
      }

      .footer-cta {
        align-items: flex-end;
      }
    }

    @media screen and (max-width: 767px) {
        .hero-phones-desktop {
            display: none;
        }

        .hero-content {
            margin-top: 50px;
        }

        .hero-phone-m1 {
            width: 500px;
            top: 20px;
            left: calc(50% - 60px);
        }
    }