:root {
    --oas-navy: #072f72;
    --oas-blue: #0a4ca3;
    --oas-cyan: #00a7dc;
    --oas-ink: #17233b;
    --oas-muted: #5f6b7f;
    --oas-soft: #eef7fc;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #f8fafc;
    color: var(--oas-ink);
    font-family: "Inter", sans-serif;
}

.site-header {
    position: relative;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid rgba(7, 47, 114, 0.09);
    box-shadow: 0 8px 28px rgba(23, 35, 59, 0.07);
}

.navbar {
    min-height: 88px;
    padding: 0;
}

.navbar-shell {
    max-width: 1440px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    margin-right: 2rem;
    padding: 0;
}

.navbar-logo {
    display: block;
    width: 150px;
    height: 82px;
    object-fit: contain;
}

.navbar-nav {
    gap: 0.15rem;
}

.navbar-nav .nav-link {
    position: relative;
    margin: 0 0.08rem;
    padding: 0.75rem 0.65rem !important;
    border-radius: 0.65rem;
    color: var(--oas-muted);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    white-space: nowrap;
    transition: color 180ms ease, background-color 180ms ease, transform 180ms ease,
        box-shadow 180ms ease;
}

.navbar-nav .nav-link:not(.member-link):not(.signin-link)::after {
    position: absolute;
    right: 0.65rem;
    bottom: 0.4rem;
    left: 0.65rem;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan));
    content: "";
    opacity: 0;
    transform: scaleX(0.35);
    transition: opacity 180ms ease, transform 180ms ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus-visible {
    color: var(--oas-blue);
    background: var(--oas-soft);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link:focus-visible::after,
.navbar-nav .nav-link.active::after {
    opacity: 1;
    transform: scaleX(1);
}

.navbar-nav .nav-link.active {
    color: var(--oas-blue);
    background: var(--oas-soft);
}

.nav-action {
    margin-left: 0.35rem;
}

.navbar-nav .member-link,
.navbar-nav .signin-link {
    padding: 0.7rem 1rem !important;
    text-align: center;
}

.navbar-nav .member-link {
    border: 1px solid rgba(10, 76, 163, 0.35);
    color: var(--oas-blue);
    background: #fff;
}

.navbar-nav .member-link:hover,
.navbar-nav .member-link:focus-visible {
    border-color: var(--oas-blue);
    background: var(--oas-soft);
    transform: translateY(-1px);
}

.navbar-nav .signin-link {
    border: 1px solid transparent;
    color: #fff;
    background: linear-gradient(135deg, var(--oas-navy), var(--oas-blue) 58%, var(--oas-cyan));
    box-shadow: 0 8px 20px rgba(10, 76, 163, 0.22);
}

.navbar-nav .signin-link:hover,
.navbar-nav .signin-link:focus-visible {
    color: #fff;
    background: linear-gradient(135deg, #05275f, #083f89 58%, #0097c7);
    box-shadow: 0 10px 24px rgba(10, 76, 163, 0.3);
    transform: translateY(-1px);
}

.navbar-toggler {
    width: 46px;
    height: 42px;
    padding: 0.45rem;
    border: 1px solid rgba(10, 76, 163, 0.2);
    border-radius: 0.7rem;
    background: var(--oas-soft);
    box-shadow: none !important;
}

.navbar-toggler:focus-visible {
    outline: 3px solid rgba(0, 167, 220, 0.25);
}

/* Home hero */
.oas-hero {
    position: relative;
    min-height: calc(100vh - 88px);
    overflow: hidden;
    background:
        linear-gradient(115deg, rgba(238, 247, 252, 0.88), rgba(255, 255, 255, 0.97) 49%, rgba(232, 248, 255, 0.78)),
        radial-gradient(circle at 78% 28%, rgba(0, 167, 220, 0.14), transparent 34%);
    isolation: isolate;
}

.oas-hero::before {
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image: radial-gradient(rgba(10, 76, 163, 0.12) 1px, transparent 1px);
    background-size: 28px 28px;
    content: "";
    opacity: 0.28;
    mask-image: linear-gradient(90deg, transparent, #000 55%, #000);
}

.hero-container {
    max-width: 1440px;
    padding-top: clamp(4rem, 8vh, 7rem);
    padding-bottom: clamp(4rem, 8vh, 7rem);
}

.hero-copy {
    position: relative;
    z-index: 2;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.5rem 0.85rem;
    border: 1px solid rgba(10, 76, 163, 0.13);
    border-radius: 999px;
    color: var(--oas-blue);
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 7px 22px rgba(7, 47, 114, 0.07);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero-label-mark {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--oas-cyan);
    box-shadow: 0 0 0 5px rgba(0, 167, 220, 0.13);
}

.hero-title {
    max-width: 720px;
    margin: 1.4rem 0 1rem;
    color: var(--oas-navy);
    font-size: clamp(2.35rem, 4.4vw, 4.65rem);
    font-weight: 700;
    letter-spacing: -0.055em;
    line-height: 1.04;
}

.hero-rotator {
    display: flex;
    align-items: center;
    min-height: 2.65rem;
    margin-bottom: 1.25rem;
    color: var(--oas-ink);
    font-size: clamp(1.25rem, 2vw, 1.8rem);
    font-weight: 700;
    letter-spacing: -0.025em;
}

.rotator-prefix {
    flex: 0 0 auto;
    margin-right: 0.45rem;
}

.rotator-words {
    position: relative;
    display: inline-block;
    width: min(12.5em, 100%);
    height: 1.35em;
    overflow: hidden;
    color: var(--oas-blue);
    text-align: left;
    white-space: nowrap;
}

.rotator-words::after {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 0.24em;
    border-radius: 99px;
    background: rgba(0, 167, 220, 0.22);
    content: "";
}

.rotator-word {
    position: relative;
    display: inline-block;
    padding-right: 0.1em;
    will-change: opacity, transform;
}

.rotator-word::after {
    display: inline-block;
    width: 2px;
    height: 0.92em;
    margin-left: 0.12em;
    background: var(--oas-cyan);
    content: "";
    vertical-align: -0.08em;
    animation: blinkTypingCursor 0.75s steps(1) infinite;
}

.rotator-word.is-entering {
    animation: slideTypingWordIn 480ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.rotator-word.is-leaving {
    animation: fadeTypingWordOut 340ms ease both;
}

@keyframes slideTypingWordIn {
    from { opacity: 0; transform: translateX(-34px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeTypingWordOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-8px); }
}

@keyframes blinkTypingCursor {
    0%, 48% { opacity: 1; }
    49%, 100% { opacity: 0; }
}

.hero-subtitle {
    max-width: 680px;
    margin: 0 0 2rem;
    color: var(--oas-muted);
    font-size: clamp(1rem, 1.4vw, 1.14rem);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.hero-btn {
    display: inline-flex;
    min-height: 54px;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    padding: 0.85rem 1.45rem;
    border-radius: 0.9rem;
    font-size: 0.96rem;
    font-weight: 700;
    transition: transform 180ms ease, box-shadow 180ms ease, color 180ms ease, background-color 180ms ease;
}

.hero-btn svg {
    width: 19px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.8;
    transition: transform 180ms ease;
}

.hero-btn-primary {
    border-color: transparent;
    color: #fff;
    background: linear-gradient(135deg, var(--oas-navy), var(--oas-blue) 62%, var(--oas-cyan));
    box-shadow: 0 14px 28px rgba(10, 76, 163, 0.23);
}

.hero-btn-primary:hover,
.hero-btn-primary:focus-visible {
    color: #fff;
    box-shadow: 0 18px 34px rgba(10, 76, 163, 0.32);
    transform: translateY(-2px);
}

.hero-btn-primary:hover svg { transform: translateX(3px); }

.hero-btn-secondary {
    border: 1px solid rgba(10, 76, 163, 0.2);
    color: var(--oas-blue);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 10px 25px rgba(23, 35, 59, 0.07);
}

.hero-btn-secondary:hover,
.hero-btn-secondary:focus-visible {
    border-color: rgba(10, 76, 163, 0.4);
    color: var(--oas-navy);
    background: #fff;
    box-shadow: 0 14px 30px rgba(23, 35, 59, 0.11);
    transform: translateY(-2px);
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.25rem;
    margin-top: 1.7rem;
    color: #536176;
    font-size: 0.8rem;
    font-weight: 600;
}

/*
 * Hero slider image files:
 * public/images/home-slider/slider-1.jpg
 * public/images/home-slider/slider-2.jpg
 * public/images/home-slider/slider-3.jpg
 */
.oas-slider-shell {
    position: relative;
    width: min(100%, 670px);
    margin-left: auto;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.82);
    border-radius: 2rem;
    background: rgba(255, 255, 255, 0.48);
    box-shadow: 0 34px 72px rgba(7, 47, 114, 0.2), 0 10px 28px rgba(7, 47, 114, 0.1);
    backdrop-filter: blur(16px);
}

.oas-slider-shell::before {
    position: absolute;
    inset: -8% -7%;
    z-index: -1;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 167, 220, 0.25), rgba(10, 76, 163, 0.06) 56%, transparent 72%);
    content: "";
    filter: blur(8px);
}

.oas-hero-slider {
    overflow: hidden;
    aspect-ratio: 3 / 2;
    border-radius: 1.4rem;
    background: var(--oas-navy);
}

.oas-hero-slider .swiper-slide {
    position: relative;
    overflow: hidden;
}

.oas-hero-slider .swiper-slide::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(7, 47, 114, 0.08), transparent 55%, rgba(0, 167, 220, 0.12));
    content: "";
    pointer-events: none;
}

.oas-hero-slider .swiper-slide img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 5.4s ease;
}

.hero-media-empty {
    display: grid;
    place-items: center;
    color: rgba(255, 255, 255, 0.82);
    background: linear-gradient(135deg, var(--oas-navy), var(--oas-blue), var(--oas-cyan));
    font-size: clamp(1.4rem, 4vw, 2.4rem);
    font-weight: 700;
    letter-spacing: -0.04em;
}

.oas-hero-slider .swiper-slide-active img {
    transform: scale(1.045);
}

.oas-hero-slider .swiper-button-prev,
.oas-hero-slider .swiper-button-next {
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 50%;
    color: var(--oas-blue);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 9px 24px rgba(7, 47, 114, 0.2);
    transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
    backdrop-filter: blur(8px);
}

.oas-hero-slider .swiper-button-prev { left: 1rem; }
.oas-hero-slider .swiper-button-next { right: 1rem; }

.oas-hero-slider .swiper-button-prev::after,
.oas-hero-slider .swiper-button-next::after {
    font-size: 0.95rem;
    font-weight: 800;
}

.oas-hero-slider .swiper-button-prev:hover,
.oas-hero-slider .swiper-button-next:hover,
.oas-hero-slider .swiper-button-prev:focus-visible,
.oas-hero-slider .swiper-button-next:focus-visible {
    color: #fff;
    background: var(--oas-blue);
    transform: scale(1.06);
}

.oas-hero-slider .swiper-button-prev:focus-visible,
.oas-hero-slider .swiper-button-next:focus-visible {
    outline: 3px solid rgba(0, 167, 220, 0.35);
    outline-offset: 2px;
}

.oas-hero-slider .swiper-pagination {
    bottom: 1rem;
}

.oas-hero-slider .swiper-pagination-bullet {
    width: 9px;
    height: 9px;
    margin: 0 5px !important;
    background: #fff;
    box-shadow: 0 2px 7px rgba(7, 47, 114, 0.35);
    opacity: 0.68;
    transition: width 180ms ease, border-radius 180ms ease, opacity 180ms ease;
}

.oas-hero-slider .swiper-pagination-bullet-active {
    width: 26px;
    border-radius: 999px;
    background: var(--oas-cyan);
    opacity: 1;
}

.trust-icon {
    display: inline-grid;
    width: 20px;
    height: 20px;
    margin-right: 0.3rem;
    place-items: center;
    border-radius: 50%;
    color: #fff;
    background: var(--oas-cyan);
    font-size: 0.68rem;
}

.hero-visual {
    position: relative;
    width: min(100%, 650px);
    margin-left: auto;
    padding: 2rem 1.1rem;
}

.visual-glow {
    position: absolute;
    inset: 4% 2% 3%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 167, 220, 0.22), rgba(10, 76, 163, 0.06) 55%, transparent 72%);
    filter: blur(6px);
}

.visual-card {
    position: relative;
    overflow: hidden;
    padding: clamp(1rem, 2.5vw, 1.6rem);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 1.65rem;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 32px 65px rgba(7, 47, 114, 0.17), 0 8px 20px rgba(7, 47, 114, 0.08);
    backdrop-filter: blur(16px);
    transform: perspective(1200px) rotateY(-3deg) rotateX(1deg);
}

.visual-card-top,
.chart-heading,
.lesson-row,
.lesson-progress,
.next-lesson,
.visual-brand {
    display: flex;
    align-items: center;
}

.visual-card-top,
.chart-heading,
.lesson-row { justify-content: space-between; }

.visual-logo-mark {
    display: grid;
    width: 50px;
    height: 50px;
    margin-right: 0.7rem;
    place-items: center;
    border: 1px solid rgba(10, 76, 163, 0.12);
    border-radius: 0.8rem;
    background: #f4fbff;
}

.visual-logo-mark img { width: 42px; height: 42px; object-fit: contain; }
.visual-brand strong,
.visual-brand small,
.chart-heading strong,
.chart-heading small,
.lesson-row strong,
.lesson-row small,
.floating-card strong,
.floating-card small { display: block; }

.visual-brand strong { color: var(--oas-navy); font-size: 0.9rem; }
.visual-brand small,
.chart-heading small,
.lesson-row small,
.floating-card small { color: #718096; font-size: 0.7rem; }

.live-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.65rem;
    border-radius: 999px;
    color: #087b61;
    background: #e6fbf5;
    font-size: 0.7rem;
    font-weight: 700;
}

.live-pill i { width: 7px; height: 7px; border-radius: 50%; background: #10b981; }

.chart-panel {
    margin: 1.25rem 0;
    padding: 1rem;
    border: 1px solid rgba(10, 76, 163, 0.08);
    border-radius: 1.1rem;
    background: linear-gradient(180deg, #f9fdff, #f3f9fd);
}

.chart-heading strong { margin-top: 0.15rem; color: var(--oas-navy); font-size: 0.87rem; }
.chart-growth { padding: 0.3rem 0.5rem; border-radius: 0.5rem; color: #087b61; background: #e5faf3; font-size: 0.72rem; font-weight: 700; }
.trading-chart { display: block; width: 100%; height: auto; margin-top: 0.7rem; overflow: visible; }
.chart-grid { fill: none; stroke: #cbdce7; stroke-width: 1; opacity: 0.42; }
.chart-area { fill: url(#chartArea); }
.chart-line { fill: none; stroke: url(#chartLine); stroke-linecap: round; stroke-width: 5; }
.trading-chart circle { fill: #00b7e8; stroke: #fff; stroke-width: 4; }

.lesson-row { gap: 0.8rem; }
.lesson-progress,
.next-lesson { gap: 0.65rem; }
.lesson-row strong { color: var(--oas-navy); font-size: 0.75rem; }

.progress-ring {
    display: grid;
    width: 46px;
    height: 46px;
    flex: 0 0 auto;
    place-items: center;
    border-radius: 50%;
    background: conic-gradient(var(--oas-cyan) 78%, #e1edf4 0);
}

.progress-ring::before {
    grid-area: 1 / 1;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #fff;
    content: "";
}

.progress-ring span { z-index: 1; color: var(--oas-blue); font-size: 0.62rem; font-weight: 700; }
.next-lesson { padding: 0.7rem 0.8rem; border-radius: 0.75rem; background: var(--oas-soft); }
.play-icon { display: grid; width: 31px; height: 31px; place-items: center; border-radius: 50%; color: #fff; background: var(--oas-blue); font-size: 0.55rem; }

.floating-card {
    position: absolute;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.8rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 16px 35px rgba(7, 47, 114, 0.14);
    animation: floatCard 4.5s ease-in-out infinite;
    backdrop-filter: blur(12px);
}

.floating-card strong { color: var(--oas-navy); font-size: 0.72rem; }
.floating-icon { display: grid; width: 36px; height: 36px; place-items: center; border-radius: 0.7rem; color: #fff; background: linear-gradient(135deg, var(--oas-blue), var(--oas-cyan)); font-weight: 700; }
.floating-card-students { top: 0; right: -0.2rem; }
.floating-card-certificate { bottom: 0; left: -0.5rem; animation-delay: -2.2s; }

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-9px); }
}

.hero-orb {
    position: absolute;
    z-index: -1;
    border-radius: 50%;
    filter: blur(1px);
}

.hero-orb-one { top: 13%; left: -90px; width: 240px; height: 240px; border: 45px solid rgba(0, 167, 220, 0.06); }
.hero-orb-two { right: -100px; bottom: -120px; width: 340px; height: 340px; background: rgba(10, 76, 163, 0.05); }

/* Start to success */
.oas-success {
    position: relative;
    overflow: hidden;
    padding: clamp(4.75rem, 8vw, 7.5rem) 0;
    border-top: 1px solid rgba(10, 76, 163, 0.07);
    background:
        linear-gradient(180deg, #fff 0%, #f5faff 100%),
        radial-gradient(circle at 50% 0%, rgba(0, 167, 220, 0.1), transparent 45%);
    isolation: isolate;
}

.success-container {
    position: relative;
    z-index: 1;
    max-width: 1320px;
}

.success-heading {
    max-width: 760px;
    margin: 0 auto clamp(2.5rem, 5vw, 4rem);
}

.success-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--oas-blue);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.success-eyebrow::before,
.success-eyebrow::after {
    width: 24px;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan));
    content: "";
}

.success-heading h2 {
    margin: 1rem 0 1.05rem;
    color: var(--oas-navy);
    font-size: clamp(2rem, 4vw, 3.45rem);
    font-weight: 700;
    letter-spacing: -0.045em;
    line-height: 1.12;
}

.success-heading h2 span {
    color: var(--oas-blue);
    background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.success-heading p {
    max-width: 670px;
    margin: 0 auto;
    color: var(--oas-muted);
    font-size: 1rem;
    line-height: 1.75;
}

.success-grid > div {
    display: flex;
}

.success-card {
    position: relative;
    width: 100%;
    min-height: 285px;
    overflow: hidden;
    padding: clamp(1.55rem, 2.5vw, 2rem);
    border: 1px solid rgba(10, 76, 163, 0.1);
    border-radius: 1.4rem;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 15px 42px rgba(7, 47, 114, 0.08);
    transition: border-color 240ms ease, box-shadow 240ms ease, transform 240ms ease;
}

.success-card::before {
    position: absolute;
    top: -58px;
    right: -58px;
    width: 145px;
    height: 145px;
    border-radius: 50%;
    background: rgba(0, 167, 220, 0.055);
    content: "";
    transition: transform 300ms ease;
}

.success-card:hover,
.success-card:focus-within {
    border-color: rgba(0, 167, 220, 0.32);
    box-shadow: 0 24px 52px rgba(7, 47, 114, 0.15);
    transform: translateY(-8px);
}

.success-card:hover::before,
.success-card:focus-within::before {
    transform: scale(1.22);
}

.success-icon {
    position: relative;
    display: grid;
    width: 62px;
    height: 62px;
    margin-bottom: 1.45rem;
    place-items: center;
    border: 1px solid rgba(0, 167, 220, 0.15);
    border-radius: 1rem;
    color: var(--oas-blue);
    background: linear-gradient(145deg, #eef9ff, #fff);
    box-shadow: 0 10px 24px rgba(0, 167, 220, 0.1);
    transition: color 240ms ease, background 240ms ease, transform 240ms ease;
}

.success-icon svg {
    width: 31px;
    height: 31px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.65;
}

.success-card:hover .success-icon,
.success-card:focus-within .success-icon {
    color: #fff;
    background: linear-gradient(135deg, var(--oas-blue), var(--oas-cyan));
    transform: rotate(-4deg) scale(1.05);
}

.success-number {
    color: var(--oas-navy);
    font-size: clamp(2.2rem, 4vw, 3.15rem);
    font-weight: 700;
    letter-spacing: -0.055em;
    line-height: 1;
}

.success-card h3 {
    margin: 0.75rem 0 0;
    color: var(--oas-muted);
    font-size: 0.98rem;
    font-weight: 600;
    line-height: 1.45;
}

.success-card-line {
    position: absolute;
    right: 2rem;
    bottom: 0;
    left: 2rem;
    height: 4px;
    border-radius: 999px 999px 0 0;
    background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan));
    transform: scaleX(0.25);
    transform-origin: left;
    transition: transform 300ms ease;
}

.success-card:hover .success-card-line,
.success-card:focus-within .success-card-line {
    transform: scaleX(1);
}

.success-decoration {
    position: absolute;
    z-index: -1;
    border-radius: 50%;
    pointer-events: none;
}

.success-decoration-one {
    top: -170px;
    left: -130px;
    width: 360px;
    height: 360px;
    border: 62px solid rgba(0, 167, 220, 0.045);
}

.success-decoration-two {
    right: -130px;
    bottom: -190px;
    width: 390px;
    height: 390px;
    background: rgba(10, 76, 163, 0.035);
}

/* About OAS Academy */
.oas-about {
    position: relative;
    overflow: hidden;
    padding: clamp(4.75rem, 8vw, 7.5rem) 0;
    background: #fff;
    isolation: isolate;
}

.about-container { position: relative; z-index: 1; max-width: 1320px; }
.about-visual { position: relative; max-width: 610px; padding: 0 1.6rem 1.7rem 0; }

.about-image-frame {
    position: relative;
    overflow: hidden;
    min-height: 560px;
    border: 8px solid #fff;
    border-radius: 2rem 5rem 2rem 2rem;
    background: var(--oas-soft);
    box-shadow: 0 28px 65px rgba(7, 47, 114, 0.16);
}

.about-image-frame::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(7, 47, 114, 0.2));
    content: "";
}

.about-image-frame img {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 560px;
    object-fit: cover;
    object-position: 54% center;
    transition: transform 650ms ease;
}

.about-visual:hover .about-image-frame img { transform: scale(1.035); }

.about-experience-card {
    position: absolute;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 1.25rem;
    border: 1px solid rgba(0, 167, 220, 0.16);
    border-radius: 1.15rem;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 18px 42px rgba(7, 47, 114, 0.17);
    backdrop-filter: blur(12px);
}

.about-experience-icon,
.about-benefit-icon {
    display: grid;
    flex: 0 0 auto;
    place-items: center;
    color: #fff;
    background: linear-gradient(135deg, var(--oas-blue), var(--oas-cyan));
}

.about-experience-icon { width: 45px; height: 45px; border-radius: 0.85rem; }
.about-experience-icon svg,
.about-benefit-icon svg {
    width: 23px;
    height: 23px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.7;
}

.about-experience-card strong,
.about-experience-card small { display: block; }
.about-experience-card strong { color: var(--oas-navy); font-size: 0.86rem; }
.about-experience-card small { margin-top: 0.15rem; color: var(--oas-muted); font-size: 0.7rem; }
.about-content { max-width: 640px; margin-left: auto; }

.about-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--oas-blue);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.about-eyebrow::before {
    width: 30px;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan));
    content: "";
}

.about-content h2 {
    margin: 1rem 0 1.25rem;
    color: var(--oas-navy);
    font-size: clamp(2rem, 3.5vw, 3.35rem);
    font-weight: 700;
    letter-spacing: -0.045em;
    line-height: 1.13;
}

.about-content h2 span {
    color: var(--oas-blue);
    background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-description { margin: 0; color: var(--oas-muted); font-size: 1rem; line-height: 1.8; }
.about-benefits {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
    margin: 2rem 0 2.15rem;
}

.about-benefit {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    min-height: 74px;
    padding: 0.85rem;
    border: 1px solid rgba(10, 76, 163, 0.1);
    border-radius: 1rem;
    color: var(--oas-ink);
    background: linear-gradient(145deg, #fff, #f5faff);
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.35;
    transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease;
}

.about-benefit:hover {
    border-color: rgba(0, 167, 220, 0.3);
    box-shadow: 0 12px 28px rgba(7, 47, 114, 0.09);
    transform: translateY(-3px);
}

.about-benefit-icon {
    width: 43px;
    height: 43px;
    border-radius: 0.8rem;
    box-shadow: 0 8px 18px rgba(10, 76, 163, 0.2);
}

.about-button { width: fit-content; }
[data-about-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 700ms ease, transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
}
.about-content[data-about-reveal] { transition-delay: 100ms; }
[data-about-reveal].is-visible { opacity: 1; transform: translateY(0); }

.about-decoration { position: absolute; z-index: -1; border-radius: 50%; pointer-events: none; }
.about-decoration-one {
    top: 8%;
    right: -110px;
    width: 290px;
    height: 290px;
    border: 50px solid rgba(0, 167, 220, 0.045);
}
.about-decoration-two {
    bottom: -130px;
    left: -120px;
    width: 300px;
    height: 300px;
    background: rgba(10, 76, 163, 0.035);
}

/* Course paths */
.oas-courses {
    position: relative;
    overflow: hidden;
    padding: clamp(4.75rem, 8vw, 7rem) 0;
    background: linear-gradient(145deg, #f5faff 0%, #ffffff 48%, #eef8ff 100%);
    isolation: isolate;
}

.courses-container { position: relative; z-index: 1; max-width: 1180px; }
.courses-heading { max-width: 790px; margin: 0 auto 3rem; }
.courses-heading .about-eyebrow { justify-content: center; }
.courses-heading h2 {
    margin: 1rem 0 1.15rem;
    color: var(--oas-navy);
    font-size: clamp(2rem, 4vw, 3.35rem);
    font-weight: 700;
    letter-spacing: -0.045em;
    line-height: 1.13;
}
.courses-heading h2 span {
    color: var(--oas-blue);
    background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.courses-heading p { margin: 0; color: var(--oas-muted); font-size: 1rem; line-height: 1.8; }
.courses-grid > div { display: flex; }

.course-path-card {
    position: relative;
    display: flex;
    width: 100%;
    min-height: 385px;
    align-items: flex-start;
    flex-direction: column;
    padding: clamp(1.6rem, 4vw, 2.4rem);
    overflow: hidden;
    border: 1px solid rgba(10, 76, 163, 0.12);
    border-radius: 1.75rem;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 22px 52px rgba(7, 47, 114, 0.09);
    transition: border-color 250ms ease, box-shadow 250ms ease, transform 250ms ease;
}
.course-path-card::before {
    position: absolute;
    top: -85px;
    right: -80px;
    width: 230px;
    height: 230px;
    border-radius: 50%;
    background: rgba(0, 167, 220, 0.07);
    content: "";
    transition: transform 350ms ease;
}
.course-path-card--vip::before { background: rgba(10, 76, 163, 0.08); }
.course-path-card:hover {
    border-color: rgba(0, 167, 220, 0.32);
    box-shadow: 0 30px 65px rgba(7, 47, 114, 0.14);
    transform: translateY(-7px);
}
.course-path-card:hover::before { transform: scale(1.12); }
.course-path-icon {
    position: relative;
    display: grid;
    width: 66px;
    height: 66px;
    margin-bottom: 1.55rem;
    place-items: center;
    border-radius: 1.15rem;
    color: #fff;
    background: linear-gradient(135deg, var(--oas-blue), var(--oas-cyan));
    box-shadow: 0 12px 25px rgba(10, 76, 163, 0.22);
}
.course-path-card--vip .course-path-icon { background: linear-gradient(135deg, var(--oas-navy), var(--oas-blue)); }
.course-path-icon svg,
.course-path-button svg {
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.7;
}
.course-path-icon svg { width: 32px; height: 32px; }
.course-path-copy { position: relative; }
.course-path-label {
    color: var(--oas-blue);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}
.course-path-copy h3 { margin: 0.55rem 0 0.8rem; color: var(--oas-navy); font-size: 1.6rem; font-weight: 750; }
.course-path-copy p { margin: 0; color: var(--oas-muted); font-size: 0.93rem; line-height: 1.75; }
.course-path-button {
    position: relative;
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    margin-top: auto;
    padding: 0.8rem 1.2rem;
    border-radius: 0.85rem;
    color: #fff;
    background: linear-gradient(135deg, var(--oas-blue), var(--oas-cyan));
    box-shadow: 0 10px 22px rgba(10, 76, 163, 0.2);
    font-size: 0.82rem;
    font-weight: 750;
    text-decoration: none;
    transition: box-shadow 220ms ease, transform 220ms ease;
}
.course-path-card--vip .course-path-button { background: linear-gradient(135deg, var(--oas-navy), var(--oas-blue)); }
.course-path-button:hover { color: #fff; box-shadow: 0 14px 28px rgba(10, 76, 163, 0.28); transform: translateY(-2px); }
.course-path-button svg { width: 18px; height: 18px; transition: transform 220ms ease; }
.course-path-button:hover svg { transform: translateX(3px); }
.course-path-card--vip[data-about-reveal] { transition-delay: 100ms; }
.courses-decoration { position: absolute; z-index: -1; border-radius: 50%; pointer-events: none; }
.courses-decoration-one { top: -160px; left: -130px; width: 350px; height: 350px; border: 60px solid rgba(0, 167, 220, 0.04); }
.courses-decoration-two { right: -100px; bottom: -180px; width: 350px; height: 350px; background: rgba(10, 76, 163, 0.035); }

/* Community feedback videos */
.oas-feedback { position: relative; overflow: hidden; padding: clamp(4.75rem, 8vw, 7rem) 0; background: #fff; isolation: isolate; }
.feedback-container { position: relative; z-index: 1; max-width: 1240px; }
.feedback-heading { max-width: 760px; margin: 0 auto 3rem; }
.feedback-heading .about-eyebrow { justify-content: center; }
.feedback-heading h2 { margin: 1rem 0 1.15rem; color: var(--oas-navy); font-size: clamp(2rem, 4vw, 3.35rem); font-weight: 700; letter-spacing: -0.045em; line-height: 1.13; }
.feedback-heading h2 span { background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.feedback-heading p { margin: 0; color: var(--oas-muted); font-size: 1rem; line-height: 1.8; }
.feedback-grid > div { display: flex; }
.feedback-card { width: 100%; overflow: hidden; border: 1px solid rgba(10, 76, 163, 0.12); border-radius: 1.35rem; background: #fff; box-shadow: 0 18px 42px rgba(7, 47, 114, 0.09); transition: border-color 240ms ease, box-shadow 240ms ease, transform 240ms ease; }
.feedback-card:hover { border-color: rgba(0, 167, 220, 0.3); box-shadow: 0 26px 52px rgba(7, 47, 114, 0.14); transform: translateY(-6px); }
.feedback-player { width: 100%; aspect-ratio: 16 / 9; overflow: hidden; background: #071a37; }
.feedback-player iframe, .feedback-player video { display: block; width: 100%; height: 100%; border: 0; object-fit: cover; }
.feedback-card__body { padding: 1.2rem 1.3rem 1.35rem; }
.feedback-card__body span { color: var(--oas-blue); font-size: 0.66rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.feedback-card__body h3 { margin: 0.5rem 0 0; color: var(--oas-navy); font-size: 1rem; font-weight: 750; line-height: 1.4; }
.feedback-action { margin-top: 2.5rem; }
.feedback-action .hero-btn { width: fit-content; }
.feedback-decoration { position: absolute; z-index: -1; border-radius: 50%; pointer-events: none; }
.feedback-decoration-one { top: -150px; right: -120px; width: 330px; height: 330px; border: 56px solid rgba(0, 167, 220, 0.04); }
.feedback-decoration-two { bottom: -180px; left: -120px; width: 350px; height: 350px; background: rgba(10, 76, 163, 0.035); }
.feedback-page-main { min-height: calc(100vh - 80px); padding-top: 1px; background: #fff; }
.feedback-page-main .oas-feedback { padding-top: clamp(5.5rem, 9vw, 8rem); }
.feedback-heading h1 { margin: 1rem 0 1.15rem; color: var(--oas-navy); font-size: clamp(2.2rem, 4.5vw, 3.65rem); font-weight: 700; letter-spacing: -0.045em; line-height: 1.12; }
.feedback-heading h1 span { background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.feedback-public-empty { padding: 4rem 1.5rem; border: 1px dashed rgba(10, 76, 163, 0.2); border-radius: 1.5rem; background: #f7fbff; }
.feedback-public-empty h2 { margin: 0; color: var(--oas-navy); font-size: 1.4rem; }
.feedback-public-empty p { margin: 0.7rem 0 0; color: var(--oas-muted); }

/* Student reviews and ratings */
.oas-reviews { position: relative; overflow: hidden; padding: clamp(4.75rem, 8vw, 7.5rem) 0; background: linear-gradient(145deg, #f4faff 0%, #fff 55%, #eef8ff 100%); isolation: isolate; }
.reviews-container { position: relative; z-index: 1; max-width: 1280px; }
.reviews-visual { position: relative; max-width: 510px; padding: 0 1.35rem 1.5rem 0; }
.reviews-image-frame { position: relative; overflow: hidden; min-height: 650px; border: 7px solid #fff; border-radius: 2rem 4.5rem 2rem 2rem; background: var(--oas-soft); box-shadow: 0 28px 65px rgba(7, 47, 114, 0.15); }
.reviews-image-frame::after { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(7, 47, 114, 0.22)); content: ""; }
.reviews-image-frame img { display: block; width: 100%; height: 100%; min-height: 650px; object-fit: cover; transition: transform 650ms ease; }
.reviews-visual:hover .reviews-image-frame img { transform: scale(1.035); }
.reviews-rating-badge { position: absolute; right: 0; bottom: 0; display: flex; align-items: center; gap: 0.8rem; padding: 1rem 1.2rem; border: 1px solid rgba(0, 167, 220, 0.16); border-radius: 1.1rem; background: rgba(255, 255, 255, 0.96); box-shadow: 0 18px 42px rgba(7, 47, 114, 0.17); backdrop-filter: blur(12px); }
.reviews-rating-badge__icon { display: grid; width: 45px; height: 45px; place-items: center; border-radius: 0.85rem; color: #fff; background: linear-gradient(135deg, #ffb020, #ffcf4a); box-shadow: 0 8px 18px rgba(255, 176, 32, 0.24); font-size: 1.35rem; }
.reviews-rating-badge strong, .reviews-rating-badge small { display: block; }
.reviews-rating-badge strong { color: var(--oas-navy); font-size: 0.82rem; }
.reviews-rating-badge small { margin-top: 0.15rem; color: var(--oas-muted); font-size: 0.66rem; }
.reviews-content { max-width: 710px; margin-left: auto; }
.reviews-heading { margin-bottom: 1.7rem; }
.reviews-heading h2 { margin: 1rem 0 1.1rem; color: var(--oas-navy); font-size: clamp(2rem, 3.5vw, 3.2rem); font-weight: 700; letter-spacing: -0.045em; line-height: 1.13; }
.reviews-heading h2 span { background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.reviews-heading p { margin: 0; color: var(--oas-muted); font-size: 0.98rem; line-height: 1.75; }
.reviews-list { display: grid; gap: 1rem; }
.review-card { padding: 1.25rem 1.35rem; border: 1px solid rgba(10, 76, 163, 0.11); border-radius: 1.2rem; background: rgba(255, 255, 255, 0.95); box-shadow: 0 12px 30px rgba(7, 47, 114, 0.07); transition: border-color 240ms ease, box-shadow 240ms ease, transform 240ms ease; }
.review-card:hover { border-color: rgba(0, 167, 220, 0.32); box-shadow: 0 20px 40px rgba(7, 47, 114, 0.12); transform: translateX(6px); }
.review-card__topline, .review-card__topline > div { display: flex; align-items: center; }
.review-card__topline { justify-content: space-between; gap: 1rem; }
.review-card__topline > div { gap: 0.75rem; }
.review-avatar { display: grid; width: 42px; height: 42px; flex: 0 0 42px; place-items: center; border-radius: 0.8rem; color: #fff; background: linear-gradient(135deg, var(--oas-blue), var(--oas-cyan)); font-size: 0.68rem; font-weight: 800; }
.review-card h3 { margin: 0; color: var(--oas-navy); font-size: 0.95rem; font-weight: 750; }
.review-quote { color: rgba(10, 76, 163, 0.2); }
.review-quote svg { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.6; }
.review-stars { position: relative; width: fit-content; margin: 0.65rem 0 0.55rem; overflow: hidden; color: #dbe4eb; font-size: 0.92rem; letter-spacing: 0.14em; line-height: 1; }
.review-stars__fill { position: absolute; top: 0; left: 0; overflow: hidden; color: #ffb020; white-space: nowrap; }
.review-stars__fill.is-five { width: 100%; }
.review-stars__fill.is-four-half { width: 90%; }
.review-card p { margin: 0; color: var(--oas-muted); font-size: 0.86rem; line-height: 1.65; }
.reviews-decoration { position: absolute; z-index: -1; border-radius: 50%; pointer-events: none; }
.reviews-decoration-one { top: -150px; left: -120px; width: 340px; height: 340px; border: 58px solid rgba(0, 167, 220, 0.04); }
.reviews-decoration-two { right: -120px; bottom: -180px; width: 360px; height: 360px; background: rgba(10, 76, 163, 0.035); }

/* YouTube channel videos */
.oas-youtube { position: relative; overflow: hidden; padding: clamp(4.75rem, 8vw, 7rem) 0; background: #fff; isolation: isolate; }
.youtube-container { position: relative; z-index: 1; max-width: 1240px; }
.youtube-heading { max-width: 760px; margin: 0 auto 3rem; }
.youtube-heading .about-eyebrow { justify-content: center; }
.youtube-heading h2, .youtube-heading h1 { margin: 1rem 0 1.15rem; color: var(--oas-navy); font-size: clamp(2rem, 4vw, 3.35rem); font-weight: 700; letter-spacing: -0.045em; line-height: 1.13; }
.youtube-heading h2 span, .youtube-heading h1 span { background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.youtube-heading p { margin: 0; color: var(--oas-muted); font-size: 1rem; line-height: 1.8; }
.youtube-grid > div { display: flex; }
.youtube-card { width: 100%; overflow: hidden; border: 1px solid rgba(10, 76, 163, 0.12); border-radius: 1.35rem; background: #fff; box-shadow: 0 18px 42px rgba(7, 47, 114, 0.09); transition: border-color 240ms ease, box-shadow 240ms ease, transform 240ms ease; }
.youtube-card:hover { border-color: rgba(0, 167, 220, 0.3); box-shadow: 0 27px 55px rgba(7, 47, 114, 0.15); transform: translateY(-6px); }
.youtube-player { width: 100%; aspect-ratio: 16 / 9; overflow: hidden; background: #071a37; }
.youtube-player iframe { display: block; width: 100%; height: 100%; border: 0; }
.youtube-card__body { padding: 1.2rem 1.3rem 1.4rem; }
.youtube-card__label { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--oas-blue); font-size: 0.65rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.youtube-card__label b { display: grid; width: 20px; height: 20px; place-items: center; border-radius: 6px; color: #fff; background: linear-gradient(135deg, var(--oas-blue), var(--oas-cyan)); font-size: 0.55rem; }
.youtube-card__body h3 { margin: 0.65rem 0 0; color: var(--oas-navy); font-size: 1.05rem; font-weight: 750; line-height: 1.4; }
.youtube-card__body p { display: -webkit-box; margin: 0.65rem 0 0; overflow: hidden; color: var(--oas-muted); font-size: 0.84rem; line-height: 1.65; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.youtube-action { margin-top: 2.5rem; }
.youtube-action .hero-btn { width: fit-content; }
.youtube-decoration { position: absolute; z-index: -1; border-radius: 50%; pointer-events: none; }
.youtube-decoration-one { top: -150px; right: -120px; width: 340px; height: 340px; border: 58px solid rgba(0, 167, 220, 0.04); }
.youtube-decoration-two { bottom: -180px; left: -120px; width: 360px; height: 360px; background: rgba(10, 76, 163, 0.035); }
.youtube-page-main { min-height: calc(100vh - 80px); padding-top: 1px; background: #fff; }
.youtube-page-main .oas-youtube { padding-top: clamp(5.5rem, 9vw, 8rem); }
.youtube-public-empty { padding: 4rem 1.5rem; border: 1px dashed rgba(10, 76, 163, 0.2); border-radius: 1.5rem; background: #f7fbff; }
.youtube-public-empty h2 { margin: 0; color: var(--oas-navy); font-size: 1.4rem; }
.youtube-public-empty p { margin: 0.7rem 0 0; color: var(--oas-muted); }

/* Latest blog posts */
.oas-blog { position: relative; overflow: hidden; padding: clamp(4.75rem, 8vw, 7rem) 0; background: linear-gradient(145deg, #f3faff 0%, #fff 50%, #edf8fd 100%); isolation: isolate; scroll-margin-top: 88px; }
.blog-container { position: relative; z-index: 1; max-width: 1240px; }
.blog-heading { max-width: 780px; margin: 0 auto 3rem; }
.blog-heading .about-eyebrow { justify-content: center; }
.blog-heading h2 { margin: 1rem 0 1.15rem; color: var(--oas-navy); font-size: clamp(2rem, 4vw, 3.35rem); font-weight: 700; letter-spacing: -0.045em; line-height: 1.13; }
.blog-heading h2 span { background: linear-gradient(90deg, var(--oas-blue), var(--oas-cyan)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.blog-heading p { margin: 0; color: var(--oas-muted); font-size: 1rem; line-height: 1.8; }
.blog-grid > div { display: flex; }
.blog-card { display: flex; width: 100%; overflow: hidden; flex-direction: column; border: 1px solid rgba(10, 76, 163, 0.12); border-radius: 1.4rem; background: #fff; box-shadow: 0 18px 45px rgba(7, 47, 114, 0.09); transition: border-color 260ms ease, box-shadow 260ms ease, transform 260ms ease; }
.blog-card:hover { border-color: rgba(0, 167, 220, 0.32); box-shadow: 0 28px 58px rgba(7, 47, 114, 0.15); transform: translateY(-8px); }
.blog-card__image { position: relative; overflow: hidden; aspect-ratio: 5 / 3; background: var(--oas-navy); }
.blog-card__image::after { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(5, 35, 84, 0.24)); content: ""; pointer-events: none; }
.blog-card__image img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform 600ms cubic-bezier(.2,.7,.2,1); }
.blog-card:hover .blog-card__image img { transform: scale(1.045); }
.blog-card__category { position: absolute; right: 1rem; bottom: 1rem; z-index: 1; padding: 0.45rem 0.7rem; border: 1px solid rgba(255, 255, 255, 0.35); border-radius: 999px; color: #fff; background: rgba(7, 47, 114, 0.78); backdrop-filter: blur(9px); font-size: 0.63rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
.blog-card__body { display: flex; flex: 1; align-items: flex-start; flex-direction: column; padding: 1.45rem 1.45rem 1.55rem; }
.blog-card__body time { display: inline-flex; align-items: center; gap: 0.45rem; color: var(--oas-blue); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.02em; }
.blog-card__body time svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.blog-card__body h3 { margin: 0.85rem 0 0; color: var(--oas-navy); font-size: 1.16rem; font-weight: 750; letter-spacing: -0.025em; line-height: 1.45; }
.blog-card__body p { margin: 0.75rem 0 1.3rem; color: var(--oas-muted); font-size: 0.84rem; line-height: 1.72; }
.blog-card__link { display: inline-flex; align-items: center; justify-content: center; gap: 0.55rem; margin-top: auto; padding: 0.7rem 1rem; border: 1px solid rgba(10, 76, 163, 0.17); border-radius: 0.75rem; color: var(--oas-blue); background: var(--oas-soft); font-size: 0.79rem; font-weight: 750; text-decoration: none; transition: color 200ms ease, background 200ms ease, border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease; }
.blog-card__link svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; transition: transform 200ms ease; }
.blog-card__link:hover, .blog-card__link:focus-visible { border-color: transparent; color: #fff; background: linear-gradient(135deg, var(--oas-navy), var(--oas-blue) 58%, var(--oas-cyan)); box-shadow: 0 10px 22px rgba(10, 76, 163, 0.2); transform: translateY(-2px); }
.blog-card__link:hover svg, .blog-card__link:focus-visible svg { transform: translateX(3px); }
.blog-explore { display: flex; justify-content: center; margin-top: 2.5rem; }
.blog-explore__link { min-width: 145px; }
.blog-decoration { position: absolute; z-index: -1; border-radius: 50%; pointer-events: none; }
.blog-decoration-one { top: -155px; right: -120px; width: 345px; height: 345px; border: 58px solid rgba(0, 167, 220, 0.045); }
.blog-decoration-two { bottom: -190px; left: -130px; width: 370px; height: 370px; background: rgba(10, 76, 163, 0.035); }

@media (max-width: 1199.98px) {
    .navbar {
        min-height: 78px;
    }

    .navbar-logo {
        width: 135px;
        height: 72px;
    }

    .navbar-collapse {
        margin: 0 -0.25rem;
        padding: 0.6rem 0.25rem 1.25rem;
        border-top: 1px solid rgba(7, 47, 114, 0.08);
    }

    .navbar-nav {
        gap: 0.15rem;
    }

    .navbar-nav .nav-link {
        margin: 0;
        padding: 0.72rem 0.9rem !important;
    }

    .navbar-nav .nav-link:not(.member-link):not(.signin-link)::after {
        top: 50%;
        right: auto;
        bottom: auto;
        left: 0.25rem;
        width: 3px;
        height: 1.25rem;
        transform: translateY(-50%) scaleY(0.35);
    }

    .navbar-nav .nav-link:hover::after,
    .navbar-nav .nav-link:focus-visible::after,
    .navbar-nav .nav-link.active::after {
        transform: translateY(-50%) scaleY(1);
    }

    .nav-action {
        margin: 0.4rem 0 0;
    }

    .hero-title { font-size: clamp(2.3rem, 4vw, 3.5rem); }
}

@media (max-width: 991.98px) {
    .oas-hero { min-height: auto; }
    .hero-container { padding-top: 4.25rem; padding-bottom: 4.5rem; }
    .hero-copy { text-align: center; }
    .hero-title,
    .hero-subtitle { margin-right: auto; margin-left: auto; }
    .hero-rotator,
    .hero-actions,
    .hero-trust { justify-content: center; }
    .hero-visual { margin: 0 auto; }
    .oas-slider-shell { margin: 0 auto; }
    .visual-card { transform: none; }
    .about-visual { margin: 0 auto; }
    .about-content { max-width: 720px; margin: 0 auto; text-align: center; }
    .about-eyebrow { justify-content: center; }
    .about-description { margin: 0 auto; }
    .about-benefit { text-align: left; }
    .about-button { margin: 0 auto; }
    .reviews-visual { margin: 0 auto; }
    .reviews-content { max-width: 760px; margin: 0 auto; }
    .reviews-heading { text-align: center; }
    .reviews-heading .about-eyebrow { justify-content: center; }
}

@media (max-width: 767.98px) {
    .hero-title { letter-spacing: -0.045em; }
    .hero-visual { padding: 1.7rem 0.4rem; }
    .floating-card { padding: 0.65rem 0.75rem; }
    .floating-card-students { right: -0.35rem; }
    .floating-card-certificate { left: -0.35rem; }
}

@media (max-width: 575.98px) {
    .navbar > .container {
        padding-right: 1rem;
        padding-left: 1rem;
    }

    .navbar-logo {
        width: 122px;
        height: 68px;
    }

    .hero-container { padding: 3.3rem 1.1rem 3.75rem; }
    .hero-title { margin-top: 1.15rem; font-size: clamp(2.1rem, 11vw, 2.8rem); line-height: 1.08; }
    .hero-rotator { display: block; min-height: 4.2rem; font-size: 1.25rem; }
    .rotator-prefix { display: block; margin: 0 0 0.2rem; }
    .rotator-words { display: inline-block; width: min(12.5em, 100%); text-align: center; }
    .hero-subtitle { line-height: 1.7; }
    .hero-actions { display: grid; grid-template-columns: 1fr; }
    .hero-btn { width: 100%; }
    .hero-trust { gap: 0.75rem; }
    .visual-card { padding: 0.85rem; border-radius: 1.25rem; }
    .visual-logo-mark { width: 42px; height: 42px; }
    .visual-logo-mark img { width: 36px; height: 36px; }
    .visual-brand strong { font-size: 0.75rem; }
    .chart-panel { margin: 0.9rem 0; padding: 0.75rem; }
    .lesson-row { align-items: stretch; flex-direction: column; }
    .next-lesson { justify-content: flex-start; }
    .floating-card { display: none; }
    .oas-slider-shell { padding: 0.55rem; border-radius: 1.35rem; }
    .oas-hero-slider { border-radius: 1rem; }
    .oas-hero-slider .swiper-button-prev,
    .oas-hero-slider .swiper-button-next { width: 36px; height: 36px; }
    .oas-hero-slider .swiper-button-prev { left: 0.65rem; }
    .oas-hero-slider .swiper-button-next { right: 0.65rem; }
    .oas-success { padding: 4rem 0; }
    .success-container { padding-right: 1.1rem; padding-left: 1.1rem; }
    .success-heading { margin-bottom: 2.25rem; }
    .success-card { min-height: 245px; padding: 1.5rem; }
    .success-icon { width: 56px; height: 56px; margin-bottom: 1.2rem; }
    .oas-about { padding: 4rem 0; }
    .about-container { padding-right: 1.1rem; padding-left: 1.1rem; }
    .about-visual { padding: 0 0.7rem 1.4rem 0; }
    .about-image-frame,
    .about-image-frame img { min-height: 420px; }
    .about-image-frame { border-width: 6px; border-radius: 1.5rem 3.5rem 1.5rem 1.5rem; }
    .about-benefits { grid-template-columns: 1fr; }
    .about-benefit { min-height: 68px; }
    .about-experience-card { right: 0; padding: 0.8rem 0.95rem; }
    .oas-courses { padding: 4rem 0; }
    .courses-container { padding-right: 1.1rem; padding-left: 1.1rem; }
    .courses-heading { margin-bottom: 2.25rem; }
    .course-path-card { min-height: 360px; border-radius: 1.4rem; }
    .course-path-button { width: 100%; }
    .oas-feedback { padding: 4rem 0; }
    .feedback-container { padding-right: 1.1rem; padding-left: 1.1rem; }
    .feedback-heading { margin-bottom: 2.25rem; }
    .feedback-action .hero-btn { width: 100%; }
    .oas-reviews { padding: 4rem 0; }
    .reviews-container { padding-right: 1.1rem; padding-left: 1.1rem; }
    .reviews-visual { padding: 0 0.7rem 1.35rem 0; }
    .reviews-image-frame, .reviews-image-frame img { min-height: 470px; }
    .reviews-image-frame { border-width: 6px; border-radius: 1.5rem 3.5rem 1.5rem 1.5rem; }
    .reviews-rating-badge { padding: 0.8rem 0.9rem; }
    .review-card:hover { transform: translateY(-4px); }
    .oas-youtube { padding: 4rem 0; }
    .youtube-container { padding-right: 1.1rem; padding-left: 1.1rem; }
    .youtube-heading { margin-bottom: 2.25rem; }
    .youtube-action .hero-btn { width: 100%; }
    .oas-blog { padding: 4rem 0; }
    .blog-container { padding-right: 1.1rem; padding-left: 1.1rem; }
    .blog-heading { margin-bottom: 2.25rem; }
    .blog-card__body { padding: 1.3rem 1.25rem 1.4rem; }
}

@media (prefers-reduced-motion: reduce) {
    .navbar-nav .nav-link,
    .navbar-nav .nav-link::after {
        transition: none;
    }

    .floating-card { animation: none; }
    .rotator-word,
    .rotator-word::after { animation: none; }
    .rotator-word::after { display: none; }
    .hero-btn,
    .hero-btn svg { transition: none; }
    .oas-hero-slider .swiper-slide img,
    .oas-hero-slider .swiper-pagination-bullet { transition: none; }
    .oas-hero-slider .swiper-slide-active img { transform: none; }
    .success-card,
    .success-card::before,
    .success-icon,
    .success-card-line { transition: none; }
    .about-image-frame img,
    .about-benefit,
    .course-path-card,
    .course-path-card::before,
    .course-path-button,
    .course-path-button svg,
    .feedback-card,
    .reviews-image-frame img,
    .review-card,
    .youtube-card,
    .blog-card,
    .blog-card__image img,
    .blog-card__link,
    .blog-card__link svg,
    [data-about-reveal] { transition: none; }
}