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

      html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: none;
        text-size-adjust: none;
      }

      body {
        font-family: 'Open Sans', sans-serif;
        background-color: #ffffff;
        color: #2d2d2d;
        min-height: 100dvh;
      }

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

      /* ===== NAVBAR ===== */
      nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 68px;
        background-color: #fff;
        box-shadow: 0 4px 8px rgba(97, 127, 233, 0.2);
        z-index: 1000;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 24px;
      }

      .nav-brand {
        font-family: 'Fredoka', sans-serif;
        font-size: 20px;
        font-weight: 700;
        color: #4195d1;
        text-decoration: none;
        flex-shrink: 0;
      }

      .nav-right {
        display: flex;
        align-items: center;
        gap: 16px;
      }

      .navbar {
        list-style: none;
        display: flex;
        align-items: center;
        gap: 4px;
      }

      .navbar li a {
        color: #1a1a1a;
        font-family: 'Fredoka', sans-serif;
        font-weight: 600;
        font-size: 15px;
        text-decoration: none;
        padding: 6px 12px;
        border-radius: 8px;
        transition:
          background 0.2s ease,
          color 0.2s ease;
        white-space: nowrap;
      }

      .navbar li a:hover {
        background-color: #eaf4fc;
        color: #4195d1;
      }

      .btn-cta {
        padding: 8px 20px;
        background-color: #4195d1;
        border: none;
        color: white;
        font-family: 'Fredoka', sans-serif;
        border-radius: 25px;
        font-size: 15px;
        font-weight: 700;
        box-shadow: 0px 4px 2px #cecece;
        cursor: pointer;
        transition: background 0.2s ease;
        white-space: nowrap;
        text-decoration: none;
      }

      .btn-cta:hover {
        background-color: #1c7cc0;
      }

      /* Hamburger */
      .hamburger {
        display: none;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 44px;
        height: 44px;
        background: none;
        border: none;
        cursor: pointer;
        gap: 5px;
        padding: 4px;
        border-radius: 8px;
        transition: background 0.2s;
      }

      .hamburger:hover {
        background-color: #eaf4fc;
      }

      .hamburger span {
        display: block;
        width: 22px;
        height: 2px;
        background-color: #1a1a1a;
        border-radius: 2px;
        transition: all 0.3s ease;
      }

      .hamburger.open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
      }
      .hamburger.open span:nth-child(2) {
        opacity: 0;
      }
      .hamburger.open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
      }

      /* Mobile menu overlay */
      .mobile-menu {
        display: none;
        position: fixed;
        top: 68px;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: 0 8px 24px rgba(65, 149, 209, 0.15);
        padding: 16px 24px 24px;
        z-index: 999;
        flex-direction: column;
        gap: 4px;
      }

      .mobile-menu.open {
        display: flex;
      }

      .mobile-menu a {
        color: #1a1a1a;
        font-family: 'Fredoka', sans-serif;
        font-weight: 600;
        font-size: 16px;
        text-decoration: none;
        padding: 12px 16px;
        border-radius: 10px;
        transition:
          background 0.2s ease,
          color 0.2s ease;
      }

      .mobile-menu a:hover,
      .mobile-menu a:active {
        background-color: #eaf4fc;
        color: #4195d1;
      }

      .mobile-menu .btn-cta-mobile {
        margin-top: 8px;
        text-align: center;
        background-color: #4195d1;
        color: white;
        border-radius: 25px;
        padding: 12px 20px;
      }

      .mobile-menu .btn-cta-mobile:hover {
        background-color: #1c7cc0;
        color: white;
      }

      /* ===== HERO SECTION ===== */
      .header-all {
        display: flex;
        align-items: center;
        justify-content: center;
        padding-top: 68px;
        gap: 40px;
        max-width: 1100px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
        padding-bottom: 40px;
        flex-wrap: wrap;
      }

      .dip-header-text {
        flex: 1;
        min-width: 280px;
        display: flex;
        flex-direction: column;
        justify-content: center;
      }

      .header-text {
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(28px, 5vw, 52px);
        line-height: 1.2;
        font-weight: 700;
      }

      .header-text-sec {
        color: #4195d1;
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(22px, 3.5vw, 40px);
        margin-top: 8px;
        line-height: 1.3;
        min-height: 1.4em;
      }

      .storyset {
        width: clamp(240px, 38%, 420px);
        flex-shrink: 0;
      }

      /* ===== SUBTITLE SECTION ===== */
      .sec-text {
        max-width: 800px;
        margin: 0 auto;
        margin-top: 40px;
        padding: 0 24px;
        text-align: center;
      }

      .sec-text-first {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(14px, 2vw, 18px);
        font-weight: 600;
        line-height: 1.6;
        margin-bottom: 12px;
        color: #1a1a1a;
      }

      .sec-text-sec {
        color: #4b5865;
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(12px, 1.6vw, 14px);
        word-spacing: 4px;
        line-height: 1.7;
      }

      /* ===== ABOUT CARD ===== */
      .about {
        max-width: 90%;
        background-color: #e9ebed;
        margin: 48px auto;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 15px;
        padding: 40px 48px;
      }

      .about-text {
        width: 100%;
        font-family: 'Fredoka', sans-serif;
      }

      .about-text-header {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 16px;
      }

      .about-text-header h1 {
        font-size: clamp(24px, 4vw, 36px);
        font-family: 'Fredoka', sans-serif;
      }

      .belhart-header {
        color: #4195d1;
      }

      .about-text p {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(14px, 1.8vw, 18px);
        line-height: 1.7;
        color: #3a3a3a;
        max-width: 72ch;
      }

      /* ===== SECTION BLOCKS (sb) ===== */
      .sb {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 48px;
        max-width: 1100px;
        margin: 0 auto;
        padding: 0 24px;
        flex-wrap: wrap;
      }

      .sb-text {
        flex: 1;
        min-width: 260px;
        font-family: 'Fredoka', sans-serif;
        display: flex;
        flex-direction: column;
        justify-content: center;
      }

      .sb-text-header {
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(20px, 3vw, 30px);
        margin-bottom: 14px;
        font-weight: 700;
        line-height: 1.25;
      }

      .sb-text-content {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(13px, 1.6vw, 15px);
        line-height: 1.75;
        color: #4b5865;
        max-width: 60ch;
      }

      .storyset1 {
        width: clamp(220px, 35%, 400px);
        flex-shrink: 0;
      }







      #aboutweb {
        scroll-margin-top: 90px;
      }

      /* ===== OUTLINE BUTTONS ===== */
      .qualificationBtn,
      .achievementBtn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 180px;
        padding: 10px 24px;
        margin-top: 20px;
        background-color: white;
        border: 2px solid #1c7cc0;
        color: #1c7cc0;
        font-family: 'Fredoka', sans-serif;
        font-size: 15px;
        font-weight: 700;
        border-radius: 25px;
        cursor: pointer;
        text-decoration: none;
        transition:
          background 0.2s ease,
          color 0.2s ease;
        box-shadow: none;
      }

      .postfixBtn:hover,
      .roundcubeBtn:hover {
        background-color: #1c7cc0;
        color: white;
      }

      /* ===== PROJECTS SECTION ===== */
      .projects-section {
        margin-top: clamp(64px, 10vw, 140px);
        scroll-margin-top: 80px;
        padding: 0 24px;
      }
      .projects-inner { max-width: 1100px; margin: 0 auto; }
      .projects-heading { text-align: center; margin-bottom: 48px; }
      .projects-title {
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(26px, 4vw, 40px);
        font-weight: 700; color: #1a1a1a; line-height: 1.2;
      }
      .projects-title .blue { color: #4195d1; }
      .projects-subtitle {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(13px, 1.6vw, 15px);
        color: #4b5865; margin-top: 10px;
      }
      .projects-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
      }
      .proj-card {
        background-color: #ffffff;
        border-radius: 16px; overflow: hidden;
        display: flex; flex-direction: column;
        border: 1px solid rgba(65, 149, 209, 0.15);
        box-shadow: 0 2px 8px rgba(65, 149, 209, 0.07);
        transition: transform 0.25s ease, box-shadow 0.25s ease;
      }
      .proj-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 16px 36px rgba(65, 149, 209, 0.18);
      }
      .proj-img-wrap {
        position: relative; width: 100%;
        aspect-ratio: 16 / 9; overflow: hidden;
        background-color: #e4ecf5;
      }
      .proj-img {
        width: 100%; height: 100%; object-fit: cover;
        display: block; transition: transform 0.4s ease;
      }
      .proj-card:hover .proj-img { transform: scale(1.04); }
      .proj-tag {
        position: absolute; top: 12px; left: 12px;
        font-family: 'Open Sans', sans-serif;
        font-size: 11px; font-weight: 700; color: #ffffff;
        background-color: #4195d1;
        padding: 4px 10px; border-radius: 20px;
        text-transform: uppercase; letter-spacing: 0.5px;
      }
      .proj-body {
        padding: 22px 22px 20px;
        display: flex; flex-direction: column; gap: 10px; flex-grow: 1;
      }
      .proj-name {
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(17px, 2vw, 20px);
        font-weight: 700; color: #1a1a1a; line-height: 1.3;
      }
      .proj-desc {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(12px, 1.4vw, 13px);
        color: #4b5865; line-height: 1.75; flex-grow: 1;
      }
      .proj-tech { display: flex; flex-wrap: wrap; gap: 6px; }
      .proj-tech span {
        font-family: 'Open Sans', sans-serif;
        font-size: 11px; font-weight: 600; color: #3a3a3a;
        background-color: #e9f0f8; padding: 3px 10px; border-radius: 20px;
      }
      .proj-btns { display: flex; gap: 10px; margin-top: 6px; flex-wrap: wrap; }
      .proj-btn {
        display: inline-flex; align-items: center; gap: 6px;
        font-family: 'Fredoka', sans-serif;
        font-size: 14px; font-weight: 700;
        padding: 8px 18px; border-radius: 25px;
        text-decoration: none;
        transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
        white-space: nowrap;
      }
      .proj-btn-outline {
        border: 2px solid #4195d1; color: #4195d1; background-color: transparent;
      }
      .proj-btn-outline:hover { background-color: #4195d1; color: #ffffff; }
      .proj-btn-fill {
        border: 2px solid #4195d1; background-color: #4195d1;
        color: #ffffff; box-shadow: 0 4px 2px #cecece;
      }
      .proj-btn-fill:hover { background-color: #1c7cc0; border-color: #1c7cc0; }

      /* ===== QUALIFICATION SECTION ===== */
      .qual-section {
        margin-top: clamp(64px, 10vw, 140px);
        scroll-margin-top: 80px;
        padding: 0 24px;
      }

      .qual-inner {
        max-width: 720px;
        margin: 0 auto;
      }

      .qual-heading {
        text-align: center;
        margin-bottom: 32px;
      }

      .qual-title {
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(26px, 4vw, 40px);
        font-weight: 700;
        color: #1a1a1a;
        line-height: 1.2;
      }

      .qual-title .blue { color: #4195d1; }

      .qual-subtitle {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(13px, 1.6vw, 15px);
        color: #4b5865;
        margin-top: 10px;
      }

      /* Tab buttons */
      .qual-tabs {
        display: flex;
        justify-content: center;
        gap: 12px;
        margin-bottom: 40px;
      }

      .qual-tab-btn {
        font-family: 'Fredoka', sans-serif;
        font-size: 15px;
        font-weight: 600;
        padding: 10px 28px;
        border-radius: 999px;
        border: 2px solid rgba(65, 149, 209, 0.3);
        background-color: #ffffff;
        color: #4b5865;
        cursor: pointer;
        position: relative;
        z-index: 0;
        transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.15s ease;
      }

      .qual-tab-btn:hover {
        border-color: #4195d1;
        color: #4195d1;
        transform: translateY(-1px);
      }

      .qual-tab-btn.active {
        background-color: #4195d1;
        border-color: #4195d1;
        color: #ffffff;
      }

      .qual-tab-btn.active:hover {
        color: #ffffff;
      }

      /* Panels */

      .qual-panel-hidden {
        display: none;
      }

      /* Timeline (same as before) */
      .qual-timeline {
        display: flex;
        flex-direction: column;
        gap: 32px;
        padding-left: 24px;
        border-left: 2px solid rgba(65, 149, 209, 0.2);
      }

      .qual-item { position: relative; display: flex; }

      .qual-dot {
        position: absolute;
        left: -31px;
        top: 6px;
        width: 12px;
        height: 12px;
        border-radius: 50%;
        background-color: #4195d1;
        border: 2px solid #fff;
        box-shadow: 0 0 0 3px rgba(65, 149, 209, 0.25);
        flex-shrink: 0;
      }

      .qual-item-body { display: flex; flex-direction: column; gap: 4px; }

      .qual-year {
        font-family: 'Open Sans', sans-serif;
        font-size: 11px;
        font-weight: 700;
        color: #4195d1;
        text-transform: uppercase;
        letter-spacing: 0.6px;
      }

      .qual-item-title {
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(15px, 1.8vw, 17px);
        font-weight: 700;
        color: #1a1a1a;
        line-height: 1.3;
        margin-top: 2px;
      }

      .qual-item-place {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(11px, 1.3vw, 12.5px);
        font-weight: 600;
        color: #4b5865;
      }

      .qual-item-desc {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(11.5px, 1.4vw, 13px);
        color: #6b7784;
        line-height: 1.7;
        margin-top: 4px;
      }

      /* ===== ACHIEVEMENT SECTION ===== */
      .ach-section {
        margin-top: clamp(64px, 10vw, 140px);
        scroll-margin-top: 80px; padding: 0 24px;
        margin-bottom: clamp(48px, 6vw, 100px);
      }
      .ach-inner { max-width: 1100px; margin: 0 auto; }
      .ach-heading { text-align: center; margin-bottom: 48px; }
      .ach-title {
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(26px, 4vw, 40px);
        font-weight: 700; color: #1a1a1a; line-height: 1.2;
      }
      .ach-title .blue { color: #4195d1; }
      .ach-subtitle {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(13px, 1.6vw, 15px); color: #4b5865; margin-top: 10px;
      }
      .ach-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
      }
      .ach-card {
        background-color: #ffffff;
        border: 1px solid rgba(65, 149, 209, 0.15);
        border-radius: 16px; overflow: hidden;
        display: flex; flex-direction: column;
        box-shadow: 0 2px 8px rgba(65, 149, 209, 0.07);
        transition: transform 0.25s ease, box-shadow 0.25s ease;
      }
      .ach-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 14px 34px rgba(65, 149, 209, 0.17);
      }
      .ach-img-wrap {
        position: relative; width: 100%;
        aspect-ratio: 16 / 10; overflow: hidden; background-color: #e4ecf5;
      }
      .ach-img {
        width: 100%; height: 100%; object-fit: cover;
        display: block; transition: transform 0.4s ease;
      }
      .ach-card:hover .ach-img { transform: scale(1.04); }
      .ach-badge {
        position: absolute; top: 10px; right: 10px;
        font-family: 'Open Sans', sans-serif;
        font-size: 10.5px; font-weight: 700; color: #ffffff;
        background-color: #4195d1; padding: 3px 10px;
        border-radius: 20px; text-transform: uppercase; letter-spacing: 0.5px;
      }
      .ach-body {
        padding: 18px 20px 16px;
        display: flex; flex-direction: column; gap: 5px; flex-grow: 1;
      }
      .ach-name {
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(15px, 1.8vw, 17px); font-weight: 700;
        color: #1a1a1a; line-height: 1.3;
      }
      .ach-issuer {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(11px, 1.3vw, 12.5px); font-weight: 600; color: #4b5865;
      }
      .ach-date { font-family: 'Open Sans', sans-serif; font-size: 11px; color: #9aa5b1; font-weight: 600; }
      .ach-btn {
        display: inline-block; font-family: 'Fredoka', sans-serif;
        font-size: 13.5px; font-weight: 700; color: #1c7cc0;
        text-decoration: none; margin-top: 8px; transition: color 0.2s ease;
      }
      .ach-btn:hover { color: #0f5a91; }

      @media (max-width: 768px) {
        .projects-section { margin-top: 64px; padding: 0 16px; }
        .projects-heading { margin-bottom: 32px; }
        .projects-grid { grid-template-columns: 1fr; gap: 20px; }
        .proj-btns { flex-direction: row; }
        .proj-btn { flex: 1; justify-content: center; }
        .qual-section { margin-top: 64px; padding: 0 16px; }
        .qual-heading { margin-bottom: 36px; }
        .qual-item-desc { max-width: 100%; }
        .ach-section { margin-top: 64px; padding: 0 16px; }
        .ach-heading { margin-bottom: 32px; }
        .ach-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
      }

      @media (max-width: 480px) {
        .ach-grid { grid-template-columns: 1fr; }
      }

      /* ===== PAGINATION ===== */
      .pg-wrap {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 8px;
        margin-top: 36px;
        flex-wrap: wrap;
      }

      .pg-btn {
        font-family: 'Fredoka', sans-serif;
        font-size: 15px;
        font-weight: 600;
        min-width: 40px;
        height: 40px;
        padding: 0 14px;
        border-radius: 10px;
        border: 2px solid rgba(65, 149, 209, 0.25);
        background-color: #ffffff;
        color: #4b5865;
        cursor: pointer;
        transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
      }

      .pg-btn:hover:not(:disabled) {
        background-color: #eaf4fc;
        border-color: #4195d1;
        color: #4195d1;
        transform: translateY(-1px);
      }

      .pg-btn.pg-active {
        background-color: #4195d1;
        border-color: #4195d1;
        color: #ffffff;
      }

      .pg-btn.pg-arrow {
        padding: 0 16px;
        font-size: 14px;
      }

      .pg-btn.pg-disabled,
      .pg-btn:disabled {
        opacity: 0.35;
        cursor: not-allowed;
      }

      /* ===== FOOTER ===== */
      .footer {
        background-color: transparent;
        margin-top: 56px;
      }

      .footer-wave {
        line-height: 0;
      }

      .footer-wave svg {
        display: block;
        width: 100%;
        height: clamp(64px, 10vw, 120px);
      }

      .footer-inner {
        background-color: #1a2a3a;
        padding: 40px 24px 28px;
      }

      .footer-top {
        max-width: 1100px;
        margin: 0 auto 24px;
        text-align: center;
      }

      .footer-title {
        font-family: 'Fredoka', sans-serif;
        font-size: clamp(28px, 4vw, 40px);
        font-weight: 700;
        color: #ffffff;
        line-height: 1.2;
      }

      .footer-text {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(13px, 1.6vw, 15px);
        color: rgba(255,255,255,0.68);
        margin-top: 8px;
      }

      .footer-links {
        max-width: 1100px;
        margin: 0 auto 28px;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
      }

      .footer-link {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 118px;
        padding: 10px 18px;
        border-radius: 999px;
        text-decoration: none;
        font-family: 'Fredoka', sans-serif;
        font-size: 14px;
        font-weight: 600;
        color: #ffffff;
        background-color: rgba(255,255,255,0.08);
        border: 1px solid rgba(255,255,255,0.1);
        transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
      }

      .footer-link:hover {
        transform: translateY(-2px);
        background-color: #4195d1;
        border-color: #4195d1;
      }

      .footer-bottom {
        max-width: 1100px;
        margin: 0 auto;
        padding-top: 18px;
        border-top: 1px solid rgba(255,255,255,0.1);
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
        flex-wrap: wrap;
      }

      .footer-copy,
      .footer-made {
        font-family: 'Open Sans', sans-serif;
        font-size: clamp(11px, 1.3vw, 12.5px);
        color: rgba(255,255,255,0.5);
      }

      .footer-highlight {
        color: #4195d1;
        font-weight: 700;
      }

      @media (max-width: 600px) {
        .footer-inner {
          padding: 32px 16px 24px;
        }

        .footer-bottom {
          flex-direction: column;
          justify-content: center;
          text-align: center;
        }
      }


      /* ===== CUSTOM ANIMATIONS ===== */

      /* Navbar active link indicator */
      .navbar li a {
        position: relative;
      }
      .navbar li a::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 50%;
        transform: translateX(-50%) scaleX(0);
        width: 60%;
        height: 2px;
        background-color: #4195d1;
        border-radius: 2px;
        transition: transform 0.25s ease;
        transform-origin: center;
      }
      .navbar li a:hover::after,
      .navbar li a.nav-active::after {
        transform: translateX(-50%) scaleX(1);
      }

      /* Hero section floating illustration */
      @keyframes floatY {
        0%, 100% { transform: translateY(0px); }
        50%       { transform: translateY(-14px); }
      }
      .storyset {
        animation: floatY 4s ease-in-out infinite;
      }

      /* Shimmer on about card */
      .about {
        position: relative;
        overflow: hidden;
      }
      .about::after {
        content: '';
        position: absolute;
        top: -60%;
        left: -60%;
        width: 60%;
        height: 220%;
        background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.18) 50%, transparent 60%);
        transform: rotate(15deg);
        animation: shimmer 5s ease-in-out infinite;
        pointer-events: none;
      }
      @keyframes shimmer {
        0%   { left: -60%; }
        60%, 100% { left: 130%; }
      }

      /* Card hover glow ring */
      .proj-card, .ach-card {
        transition: transform 0.28s ease, box-shadow 0.28s ease;
      }
      .proj-card:hover {
        box-shadow: 0 0 0 2px #4195d1, 0 16px 36px rgba(65,149,209,0.22);
      }
      .ach-card:hover {
        box-shadow: 0 0 0 2px #4195d1, 0 14px 34px rgba(65,149,209,0.2);
      }



      /* Section title animated underline */
      .projects-title,
      .qual-title,
      .ach-title {
        display: inline-block;
        position: relative;
      }

      /* Pagination button bounce on click */
      .pg-btn:active {
        transform: scale(0.92);
      }

      /* Footer link float */
      .footer-link {
        transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
      }
      .footer-link:hover {
        box-shadow: 0 6px 18px rgba(65,149,209,0.3);
      }




      /* ===== QUAL TAB BUTTON ANIMATIONS ===== */
      .qual-tab-btn {
        overflow: hidden;
      }

      /* Shimmer sweep on active button */
      .qual-tab-btn.active::after {
        content: '';
        position: absolute;
        top: 0; left: -75%;
        width: 50%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
        transform: skewX(-20deg);
        animation: btnShimmer 2.2s ease-in-out infinite;
        pointer-events: none;
      }

      @keyframes btnShimmer {
        0%   { left: -75%; }
        60%, 100% { left: 130%; }
      }

      /* Ripple */
      .qual-ripple {
        position: absolute;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.45);
        transform: scale(0);
        pointer-events: none;
        animation: rippleAnim 0.55s linear;
      }

      @keyframes rippleAnim {
        to {
          transform: scale(4);
          opacity: 0;
        }
      }

      /* ===== GRID RESPONSIVE ===== */
      /* Tablet: 600px - 1023px → 2 kolom */
      @media (min-width: 600px) and (max-width: 1023px) {
        .projects-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        .ach-grid      { grid-template-columns: repeat(2, 1fr); gap: 20px; }
      }

      /* Mobile: < 600px → 1 kolom */
      @media (max-width: 599px) {
        .projects-section { margin-top: 64px; padding: 0 16px; }
        .projects-heading { margin-bottom: 32px; }
        .projects-grid { grid-template-columns: 1fr; gap: 16px; }
        .proj-btns { flex-direction: row; }
        .proj-btn { flex: 1; justify-content: center; }
        .qual-section { margin-top: 64px; padding: 0 16px; }
        .qual-tab-btn { font-size: 14px; padding: 9px 22px; }
        .ach-section { margin-top: 64px; padding: 0 16px; }
        .ach-heading { margin-bottom: 32px; }
        .ach-grid { grid-template-columns: 1fr; gap: 16px; }
      }

      /* ===== RESPONSIVE BREAKPOINTS ===== */
      @media (max-width: 768px) {
        .navbar,
        .btn-cta {
          display: none;
        }

        .hamburger {
          display: flex;
        }

        .header-all {
          flex-direction: column;
          text-align: center;
          padding-top: 88px;
          gap: 24px;
          padding-bottom: 24px;
        }

        .dip-header-text {
          align-items: center;
        }

        .storyset {
          width: 80%;
          max-width: 320px;
          margin: 0 auto;
        }

        .about {
          max-width: 94%;
          padding: 28px 24px;
        }

        .about-text-header {
          justify-content: flex-start;
        }

        .sb {
          flex-direction: column;
          gap: 24px;
          text-align: center;
        }

        /* Untuk section SO — images di atas, teks di bawah */


        /* Untuk postfix — teks di atas, images di bawah */
        #qualification .sb-text {
          order: -1;
        }

        /* Untuk roundcube — images di atas, teks di bawah */
        #achievement .sb-order-img {
          order: -1;
        }

        .sb-text {
          align-items: center;
          min-width: unset;
          width: 100%;
        }

        .sb-text-content {
          text-align: center;
          max-width: 90%;
        }

        .storyset1 {
          width: 75%;
          max-width: 300px;
          margin: 0 auto;
        }

        .qualificationBtn,
        .achievementBtn {
          margin-top: 16px;
        }

        #so,
        #postfix,
        #achievement {
          margin-top: 64px;
        }

        .sec-text {
          margin-top: 28px;
        }
      }

      @media (max-width: 480px) {
        nav {
          padding: 0 16px;
        }

        .about {
          max-width: 96%;
          padding: 24px 20px;
        }

        .sb {
          padding: 0 16px;
        }

        .storyset {
          width: 90%;
        }
      }

      /* ===== Prevent scroll when menu open ===== */
      body.menu-open {
        overflow: hidden;
      }

      .timeline-line {
        position: absolute;
        left: 7px;
        top: 6px;
        bottom: 6px;
        width: 2px;
        background: linear-gradient(to bottom, #4195d1, #a8d4f0);
        border-radius: 2px;
      }