:root {
      --main-bg1: #fafdff;
      --main-bg2: #e7f0fa;
      --main-bg3: #e3e7f2;
      --main-text: #122044;
      --navy: #10213b;
      --accent: #2189ff;
      --light-gray: #f5f7fa;
      --border: #e5e7eb;
      --card-hover: #f0f4fa;
      --radius: 18px;
      --shadow: 0 3px 18px rgba(16,33,59,0.06);
      --maxw: 1200px;
      --transition: .23s cubic-bezier(.38,1.19,.64,1);
    }
     html { scroll-behavior: smooth; }
    body {
      margin: 0; padding: 0;
      font-family: 'Montserrat', Arial, sans-serif;
      min-height: 100vh;
      background: linear-gradient(120deg, var(--main-bg1) 0%, var(--main-bg2) 50%, var(--main-bg3) 100%);
      color: var(--main-text);
      transition: background 1.1s cubic-bezier(.7, 0, .3, 1);
      animation: bgMove 14s linear infinite alternate;
    }
    @keyframes bgMove {
      0%   { background-position: 0 0; }
      100% { background-position: 100vw 100vh; }
    }
    /* HEADER */
    .header {
      background: transparent;
      position: sticky;
      top: 0;
      z-index: 100;
      border-bottom: 1px solid var(--border);
      box-shadow: 0 1px 8px rgba(0,0,0,0.03);
      backdrop-filter: blur(8px);
    }
    .navbar {
      max-width: var(--maxw);
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 32px;
      height: 90px;
      background: transparent;
      position: relative;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 16px;
      font-size: 2.1rem;
      font-weight: 900;
      letter-spacing: 2px;
      color: var(--navy);
      user-select: none;
    }
    .logo img {
      width: 54px; height: 54px;
      object-fit: contain;
      border-radius: 13px;
      background: #fff;
    }
    .nav-links {
      display: flex;
      gap: 34px;
      transition: none;
    }
    .nav-link {
      color: var(--main-text);
      text-decoration: none;
      font-size: 1.18rem;
      font-weight: 500;
      letter-spacing: .3px;
      padding: 8px 14px;
      border-radius: 8px;
      transition: background var(--transition), color var(--transition), opacity var(--transition);
      opacity: .85;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      background: var(--light-gray);
      color: var(--accent);
      opacity: 1;
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 2.3rem;
      color: var(--navy);
      cursor: pointer;
      z-index: 202;
      transition: color .17s;
      margin-left: 14px;
    }
    /* Mobil Menü */
    @media (max-width: 900px) {
      .nav-links {
        position: fixed;
        top: 0; left: 0; right: 0;
        height: 100vh;
        background: rgba(255,255,255,0.96);
        box-shadow: 0 6px 32px #0002;
        backdrop-filter: blur(14px);
        border-bottom: 1.5px solid var(--border);
        flex-direction: column;
        gap: 0;
        align-items: center;
        justify-content: flex-start;
        padding-top: 110px;
        padding-bottom: 44px;
        font-size: 1.3rem;
        transform: translateY(-105%);
        transition: transform .44s cubic-bezier(.42,1.7,.7,1.2), opacity .22s;
        opacity: 0;
        z-index: 201;
      }
      .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        transition: transform .36s cubic-bezier(.42,1.7,.7,1.2), opacity .25s;
      }
      .nav-link {
        width: 100vw;
        text-align: center;
        border-radius: 0;
        padding: 22px 0;
        font-size: 1.13rem;
        border-bottom: 1px solid var(--border);
        background: none;
      }
      .nav-link:last-child { border-bottom: none; }
      .nav-toggle {
        display: block;
      }
    }
    /* HERO */
    .hero {
      min-height: 400px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 60px 0 40px 0;
      border-bottom: 1px solid var(--border);
      background: transparent;
    }
    .hero-content {
      max-width: var(--maxw);
      width: 100%;
      padding: 0 32px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 60px;
    }
    .hero-text {
      flex: 2 1 340px;
      min-width: 320px;
    }
    .hero-title {
      font-size: 2.1rem;
      font-weight: 900;
      letter-spacing: 0.5px;
      margin-bottom: 18px;
      color: var(--navy);
      line-height: 1.18;
    }
    .hero-desc {
      font-size: 1.1rem;
      margin-bottom: 32px;
      color: #334;
      line-height: 1.6;
      font-weight: 400;
    }
    .hero-cta {
      background: var(--navy);
      color: #fff;
      font-size: 1.07rem;
      font-weight: bold;
      padding: 15px 38px;
      border-radius: 32px;
      text-decoration: none;
      box-shadow: 0 2px 16px #13214413;
      transition: background .21s, color .21s, transform .22s, box-shadow .22s;
      letter-spacing: .5px;
      display: inline-block;
      border: none;
      outline: none;
    }
    .hero-cta:hover {
      background: var(--accent);
      color: #fff;
      transform: scale(1.07) translateY(-2px);
      box-shadow: 0 6px 18px #2189ff33;
    }
    .hero-img {
      flex: 1 1 300px;
      min-width: 220px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .hero-img img {
      width: 230px; max-width: 90%;
      border-radius: 18px;
      box-shadow: 0 6px 40px #e1eaf5;
      background: #fff;
      object-fit: cover;
    }
    /* HİZMET KARTLARI BAR */
    .services-bar {
      width: 100%;
      background: transparent;
      border-bottom: 0;
      padding: 0;
      margin: 0;
    }
    .services-bar-inner {
      max-width: var(--maxw);
      margin: 0 auto;
      padding: 0 32px;
      display: flex;
      justify-content: flex-start;
      align-items: center;
      gap: 28px;
      padding-top: 28px;
      padding-bottom: 24px;
    }
    .service-btn {
      background: var(--light-gray);
      border: 1.7px solid var(--border);
      color: var(--navy);
      border-radius: 14px;
      font-size: 1.11rem;
      font-weight: 700;
      padding: 17px 38px;
      cursor: pointer;
      transition: background var(--transition), color var(--transition), box-shadow var(--transition), border var(--transition), transform var(--transition);
      box-shadow: 0 1px 8px #10213b10;
      outline: none;
      display: flex;
      align-items: center;
      gap: 10px;
      opacity: .92;
      position: relative;
      z-index: 2;
    }
    .service-btn.selected,
    .service-btn:hover {
      background: linear-gradient(90deg, #e2edff 0%, #d2e7ff 100%);
      color: var(--accent);
      border-color: var(--accent);
      transform: translateY(-3px) scale(1.045);
      box-shadow: 0 4px 24px #2189ff31, var(--shadow);
      opacity: 1;
    }
    .service-btn .icon {
      font-size: 1.3em;
      transition: color 0.15s;
    }
    .service-btn.selected .icon {
      color: var(--accent);
    }
    @media (max-width: 900px) {
      .hero-content { flex-direction: column; gap: 28px;}
      .services-bar-inner { flex-direction: column; gap: 17px; align-items: flex-start;}
    }
    /* ANA HİZMET KARTI */
    .main-services {
      max-width: var(--maxw);
      margin: 34px auto 0 auto;
      display: flex;
      flex-wrap: wrap;
      gap: 44px;
      padding: 0 32px;
      justify-content: flex-start;
      position: relative;
    }
    .main-service-card {
      background: var(--light-gray);
      border-radius: var(--radius);
      box-shadow: 0 1.5px 8px #10213b0a;
      padding: 38px 30px 30px 30px;
      min-width: 260px;
      max-width: 500px;
      flex: 1 1 340px;
      text-align: left;
      transition: box-shadow var(--transition), background var(--transition), transform var(--transition), opacity .3s;
      border: 1.3px solid var(--border);
      font-weight: 600;
      color: var(--main-text);
      font-size: 1.08rem;
      display: none;
      flex-direction: column;
      gap: 16px;
      opacity: 0;
      animation: fadeInService .7s;
    }
    .main-service-card.active {
      display: flex;
      opacity: 1;
      animation: fadeInService .7s;
    }
    @keyframes fadeInService {
      from { opacity: 0; transform: translateY(32px);}
      to { opacity: 1; transform: translateY(0);}
    }
    .main-service-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--navy);
      letter-spacing: .7px;
      margin-bottom: 3px;
    }
    .main-service-desc {
      font-size: 1.07rem;
      color: #26324a;
      font-weight: 500;
      line-height: 1.55;
      margin-bottom: 2px;
    }
    /* ACCORDION WITH IMAGE */
    .accordion { margin-top: 26px; }
    .accordion-item {
      background: #fff;
      border-radius: 14px;
      box-shadow: 0 1.5px 8px #10213b0a;
      border: 1.2px solid #e5e7eb;
      margin-bottom: 16px;
      overflow: hidden;
      transition: box-shadow .19s;
      display: flex;
      align-items: stretch;
      gap: 0;
    }
    .accordion-title {
      width: 100%;
      background: none;
      border: none;
      outline: none;
      font-size: 1.06rem;
      font-weight: 800;
      color: #122044;
      text-align: left;
      padding: 20px 18px;
      cursor: pointer;
      transition: background .16s, color .15s;
      border-bottom: 1px solid #f0f2f6;
      position: relative;
      display: flex;
      align-items: center;
      gap: 12px;
      z-index: 2;
    }
    .accordion-title.active,
    .accordion-title:hover {
      background: #f0f7ff;
      color: #2189ff;
    }
    .accordion-title::after {
      content: "▼";
      margin-left: auto;
      font-size: .98em;
      color: #2189ff;
      transition: transform .23s;
    }
    .accordion-title.active::after {
      transform: rotate(-180deg);
    }
    .accordion-img {
      width: 70px;
      min-width: 70px;
      max-height: 70px;
      margin-left: 0;
      margin-right: 8px;
      border-radius: 10px;
      object-fit: cover;
      box-shadow: 0 2px 8px #2189ff1a;
      border: 1.5px solid #e5e7eb;
      background: #fafdff;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      background: #fafdff;
      color: #42507a;
      font-size: 1rem;
      padding: 0 18px;
      transition: max-height .33s cubic-bezier(.3,1.7,.6,1), padding .2s;
      width: 100%;
      box-sizing: border-box;
    }
    .accordion-item.open .accordion-content {
      padding: 15px 18px 20px 18px;
      max-height: 180px;
    }
    @media (max-width: 600px) {
      .accordion-title { font-size: 1.01rem; padding: 17px 7px; }
      .accordion-content { font-size: .96rem; padding: 0 7px; }
      .accordion-item.open .accordion-content { padding: 11px 7px 16px 7px; }
      .accordion-img { width: 46px; min-width: 46px; max-height: 46px; }
      .accordion-item { flex-direction: column; }
    }
    /* GALERİ */
    .gallery-section {
      max-width: var(--maxw);
      margin: 46px auto 0 auto;
      background: #fafdff;
      border-radius: var(--radius);
      box-shadow: 0 3px 18px #10213b0a;
      padding: 35px 18px 28px 18px;
      border: 1.2px solid var(--border);
    }
    .gallery-title {
      font-size: 1.22rem;
      font-weight: 800;
      color: var(--navy);
      margin-bottom: 15px;
      text-align:center;
    }
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
      gap: 18px;
      width: 100%;
      margin: 0 auto;
    }
    .gallery-item {
      background: #fff;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 2px 12px #2189ff0a;
      border: 1.2px solid #e5e7eb;
      transition: box-shadow .15s, transform .15s;
      cursor: pointer;
      position: relative;
      aspect-ratio: 4/3;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .18s;
      display:block;
    }
    .gallery-item:hover {
      box-shadow: 0 6px 28px #2189ff1a;
      transform: scale(1.04);
    }
    .gallery-item:hover img { transform: scale(1.07);}
    /* Vizyon Misyon, Adres, Footer responsive yukarıda */