/* ===== RESET & BASE ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary:       #1565c0;
    --primary-dark:  #0d47a1;
    --primary-light: #1976d2;
    --accent:        #f9a825;
    --accent-dark:   #f57f17;
    --text:          #1a1a2e;
    --text-muted:    #5a6075;
    --bg:            #f4f6fb;
    --white:         #ffffff;
    --card-bg:       #ffffff;
    --border:        #e2e8f0;
    --shadow-sm:     0 2px 8px rgba(21,101,192,.08);
    --shadow-md:     0 8px 32px rgba(21,101,192,.12);
    --shadow-lg:     0 16px 48px rgba(21,101,192,.18);
    --radius:        12px;
    --radius-lg:     20px;
    --transition:    .25s ease;
    --font:          'Inter', 'Segoe UI', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.65;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f0f4ff; }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 3px; }

/* ===== CONTAINER ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAV ===== */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow var(--transition);
}
.nav.scrolled { box-shadow: var(--shadow-md); }

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.nav__logo-icon {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    flex-shrink: 0;
}
.nav__logo-text { line-height: 1.2; }
.nav__logo-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary-dark);
}
.nav__logo-desc {
    font-size: 11px;
    color: var(--text-muted);
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}
.nav__links a {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    transition: background var(--transition), color var(--transition);
}
.nav__links a:hover,
.nav__links a.active {
    background: #e8f0fe;
    color: var(--primary);
}

.nav__cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
    color: #fff !important;
    padding: 9px 20px !important;
    border-radius: 10px !important;
}
.nav__cta:hover {
    background: linear-gradient(135deg, var(--primary-dark), #082a6e) !important;
    color: #fff !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(21,101,192,.35);
}

.nav__burger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--text);
    font-size: 22px;
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #0d1b3e 0%, #1565c0 50%, #1976d2 100%);
    display: flex;
    align-items: center;
    padding-top: 68px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 70% 50%, rgba(249,168,37,.12) 0%, transparent 70%),
        radial-gradient(ellipse 40% 60% at 20% 80%, rgba(255,255,255,.06) 0%, transparent 60%);
}

/* Stars/dots decoration */
.hero__stars {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.hero__star {
    position: absolute;
    background: rgba(255,255,255,.7);
    border-radius: 50%;
    animation: twinkle 3s ease-in-out infinite;
}
@keyframes twinkle {
    0%,100% { opacity: .3; transform: scale(1); }
    50%      { opacity: 1;  transform: scale(1.5); }
}

.hero__inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 64px;
    padding: 80px 0;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(249,168,37,.18);
    border: 1px solid rgba(249,168,37,.4);
    border-radius: 100px;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 24px;
    letter-spacing: .4px;
}

.hero__title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 20px;
}
.hero__title span {
    background: linear-gradient(135deg, var(--accent), #ffca28);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__desc {
    font-size: 17px;
    color: rgba(255,255,255,.8);
    margin-bottom: 40px;
    max-width: 480px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    white-space: nowrap;
}
.btn--primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #1a1a2e;
    box-shadow: 0 4px 20px rgba(249,168,37,.4);
}
.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(249,168,37,.5);
}
.btn--outline {
    background: rgba(255,255,255,.1);
    color: #fff;
    border: 1px solid rgba(255,255,255,.3);
}
.btn--outline:hover {
    background: rgba(255,255,255,.2);
    transform: translateY(-2px);
}
.btn--blue {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: var(--shadow-sm);
}
.btn--blue:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Telegram button */
.btn--tg {
    background: linear-gradient(135deg, #0088cc, #006fa6);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0,136,204,.4);
}
.btn--tg:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0,136,204,.5);
}

.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__card {
    background: rgba(255,255,255,.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 340px;
    width: 100%;
}
.hero__card-title {
    font-size: 14px;
    font-weight: 600;
    color: rgba(255,255,255,.7);
    text-transform: uppercase;
    letter-spacing: .8px;
    margin-bottom: 20px;
}
.hero__stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}
.hero__stat {
    background: rgba(255,255,255,.1);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
}
.hero__stat-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
}
.hero__stat-label {
    font-size: 12px;
    color: rgba(255,255,255,.7);
    margin-top: 4px;
}

.hero__process {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.hero__step {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,.85);
    font-size: 14px;
}
.hero__step-num {
    width: 28px; height: 28px;
    background: rgba(249,168,37,.2);
    border: 1px solid rgba(249,168,37,.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    color: var(--accent);
    flex-shrink: 0;
}

/* ===== SECTION ===== */
.section { padding: 96px 0; }
.section--gray { background: var(--bg); }
.section--white { background: var(--white); }

.section__header {
    text-align: center;
    margin-bottom: 56px;
}
.section__label {
    display: inline-block;
    background: #e8f0fe;
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: 100px;
    margin-bottom: 14px;
}
.section__title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    color: var(--text);
    margin-bottom: 14px;
    line-height: 1.25;
}
.section__desc {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto;
}

/* ===== TOPICS CAROUSEL ===== */
.topics__carousel-wrap {
    position: relative;
    padding: 0 56px;
}
.topics__carousel {
    overflow: hidden;
}
.topics__track {
    display: flex;
    gap: 24px;
    transition: transform .5s cubic-bezier(.25,.46,.45,.94);
    will-change: transform;
}
.topics__track .topic-card {
    flex: 0 0 calc((100% - 48px) / 3);
    min-width: 0;
}
@media(max-width:960px){
    .topics__carousel-wrap { padding: 0 44px; }
    .topics__track .topic-card { flex: 0 0 calc((100% - 24px) / 2); }
}
@media(max-width:600px){
    .topics__carousel-wrap { padding: 0 36px; }
    .topics__track .topic-card { flex: 0 0 100%; }
}

.carousel__btn {
    position: absolute;
    top: 38%;
    transform: translateY(-50%);
    width: 40px; height: 40px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 12px rgba(0,0,0,.10);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 15px;
    color: #f9a825;
    z-index: 10;
    transition: box-shadow .2s, color .2s;
}
.carousel__btn:hover { box-shadow: 0 4px 18px rgba(0,0,0,.18); color: #f57f17; }
.carousel__btn--prev { left: 4px; }
.carousel__btn--next { right: 4px; }
.carousel__btn:disabled { opacity: .25; cursor: default; pointer-events: none; }

.carousel__dots {
    display: flex;
    justify-content: center;
    gap: 7px;
    margin-top: 28px;
}
.carousel__dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #d0d0d0;
    border: none;
    cursor: pointer;
    transition: background .25s, width .25s, border-radius .25s;
    padding: 0;
}
.carousel__dot.active {
    background: #1565c0;
    width: 22px;
    border-radius: 4px;
}

/* ===== WINNERS CAROUSEL ===== */
.winners__carousel-wrap {
    position: relative;
    padding: 0 56px;
}
.winners__carousel-wrap .carousel__btn { top: 35%; }
.winners__carousel { overflow: hidden; }
.winners__track {
    display: flex;
    gap: 24px;
    transition: transform .5s cubic-bezier(.25,.46,.45,.94);
}
.winner-card {
    flex: 0 0 calc((100% - 48px) / 3);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}
.winner-card__img-wrap {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: #e8f0fe;
}
.winner-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.winner-card__img-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: #c5d8fd;
}
.winner-card__body {
    padding: 18px 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.winner-card__topic {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    color: #1565c0;
    background: #e8f0fe;
    border-radius: 100px;
    padding: 3px 10px;
    text-decoration: none;
    align-self: flex-start;
}
.winner-card__topic:hover { background: #c5d8fd; }
.winner-card__name {
    font-size: 17px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.3;
    margin: 0;
}
.winner-card__place {
    font-size: 13px;
    color: var(--text-muted);
}
@media(max-width:960px){
    .winners__carousel-wrap { padding: 0 44px; }
    .winners__track .winner-card { flex: 0 0 calc((100% - 24px) / 2); }
}
@media(max-width:600px){
    .winners__carousel-wrap { padding: 0 36px; }
    .winners__track .winner-card { flex: 0 0 100%; }
}

/* ===== TOPIC CARD ===== */

.topic-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
}
.topic-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.topic-card__img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.topic-card__img-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #e8f0fe, #c5d8fd);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
    font-size: 48px;
}

.topic-card__body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.topic-card__status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 100px;
    margin-bottom: 12px;
    width: fit-content;
}
.topic-card__status--open {
    background: #e8f5e9;
    color: #2e7d32;
}
.topic-card__status--open::before {
    content: '';
    width: 7px; height: 7px;
    background: #4caf50;
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}
.topic-card__status--close {
    background: #ffebee;
    color: #c62828;
}
.topic-card__status--close::before {
    content: '';
    width: 7px; height: 7px;
    background: #ef5350;
    border-radius: 50%;
}
@keyframes pulse {
    0%,100% { opacity: 1; }
    50%      { opacity: .4; }
}

.topic-card__title {
    font-size: 19px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
    line-height: 1.35;
}

.topic-card__author {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.topic-card__desc {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.topic-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    gap: 12px;
    flex-wrap: wrap;
}

.topic-card__meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 13px;
    color: var(--text-muted);
}
.topic-card__meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.topic-card__btn {
    padding: 9px 20px;
    font-size: 13px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-weight: 600;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
}
.topic-card__btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(21,101,192,.35);
}
.topic-card__btn--disabled {
    background: #e0e0e0;
    color: #9e9e9e;
    cursor: not-allowed;
}
.topic-card__btn--disabled:hover {
    transform: none;
    box-shadow: none;
}

/* ===== HOW IT WORKS ===== */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    top: 36px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    opacity: .3;
    pointer-events: none;
}

.step-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition);
    position: relative;
}
.step-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.step-item__num {
    width: 56px; height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin: 0 auto 20px;
    box-shadow: 0 4px 16px rgba(21,101,192,.35);
}

.step-item__icon {
    font-size: 28px;
    margin-bottom: 8px;
    display: block;
}

.step-item__title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
}
.step-item__desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== STATS BANNER ===== */
.stats-banner {
    background: linear-gradient(135deg, var(--primary-dark), #0d1b3e);
    padding: 64px 0;
}
.stats-banner__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 32px;
    text-align: center;
}
.stat-item__num {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 8px;
}
.stat-item__label {
    font-size: 14px;
    color: rgba(255,255,255,.7);
    font-weight: 500;
}
.stat-item__icon {
    font-size: 28px;
    margin-bottom: 12px;
    display: block;
}

/* ===== RULES ===== */
.rules__list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    list-style: none;
}
.rule-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: transform var(--transition);
}
.rule-item:hover { transform: translateY(-2px); }
.rule-item__icon {
    width: 40px; height: 40px;
    background: #e8f0fe;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    color: var(--primary);
}
.rule-item__text {
    font-size: 15px;
    color: var(--text);
    line-height: 1.55;
}
.rule-item__text strong {
    color: var(--primary-dark);
    display: block;
    margin-bottom: 4px;
    font-weight: 700;
}

/* ===== CTA SECTION ===== */
.cta-section {
    background: linear-gradient(135deg, #1565c0, #0d47a1);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(249,168,37,.1) 0%, transparent 70%);
}
.cta-section__inner { position: relative; z-index: 1; }
.cta-section__title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}
.cta-section__desc {
    font-size: 17px;
    color: rgba(255,255,255,.8);
    margin-bottom: 40px;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}
.cta-section__actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===== FOOTER ===== */
.footer {
    background: #0d1b3e;
    color: rgba(255,255,255,.7);
    padding: 56px 0 28px;
}
.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer__brand {}
.footer__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.footer__logo-icon {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    color: #fff;
}
.footer__logo-name {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
}
.footer__tagline {
    font-size: 14px;
    line-height: 1.65;
    max-width: 280px;
    margin-bottom: 24px;
}
.footer__social {
    display: flex;
    gap: 12px;
}
.footer__social a {
    width: 38px; height: 38px;
    background: rgba(255,255,255,.1);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,.7);
    font-size: 16px;
    transition: background var(--transition), color var(--transition);
}
.footer__social a:hover {
    background: var(--primary-light);
    color: #fff;
}
.footer__col-title {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: .8px;
    margin-bottom: 20px;
}
.footer__links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer__links a {
    font-size: 14px;
    color: rgba(255,255,255,.65);
    transition: color var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer__links a:hover { color: var(--accent); }

.footer__bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
}
.footer__bottom span { color: var(--accent); }

/* ===== ALERT / TOAST ===== */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
}
.alert--info {
    background: #e8f0fe;
    color: var(--primary-dark);
    border: 1px solid #c5d8fd;
}
.alert--warning {
    background: #fff8e1;
    color: #e65100;
    border: 1px solid #ffe082;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 64px 24px;
    color: var(--text-muted);
}
.empty-state__icon { font-size: 56px; margin-bottom: 16px; display: block; }
.empty-state__text { font-size: 16px; }

/* ===== MOBILE NAV ===== */
@media (max-width: 768px) {
    .nav__links { display: none; flex-direction: column; }
    .nav__links.open {
        display: flex;
        position: absolute;
        top: 68px; left: 0; right: 0;
        background: rgba(255,255,255,.97);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        padding: 12px 16px 20px;
        gap: 10px;
        box-shadow: var(--shadow-md);
    }
    .nav__links a { padding: 12px 16px; border-radius: 10px; width: 100%; }
    .nav__burger { display: flex; }

    .hero__inner { grid-template-columns: 1fr; gap: 40px; padding: 48px 0; }
    .hero__visual { display: none; }
    .hero__title { font-size: 2rem; }

    .footer__grid { grid-template-columns: 1fr; gap: 32px; }

    .steps::before { display: none; }
    .topics__grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .hero__actions { flex-direction: column; }
    .btn { width: 100%; justify-content: center; }
    .cta-section__actions { flex-direction: column; align-items: center; }
}

/* ===== SKELETON / LOADING ===== */
.skeleton {
    background: linear-gradient(90deg, #e8edf5 25%, #f5f7fc 50%, #e8edf5 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}
@keyframes shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== UTILITY ===== */
.text-center { text-align: center; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-32 { margin-top: 32px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }